CA1165542A - Wire cutter and stripper apparatus - Google Patents
Wire cutter and stripper apparatusInfo
- Publication number
- CA1165542A CA1165542A CA000378740A CA378740A CA1165542A CA 1165542 A CA1165542 A CA 1165542A CA 000378740 A CA000378740 A CA 000378740A CA 378740 A CA378740 A CA 378740A CA 1165542 A CA1165542 A CA 1165542A
- Authority
- CA
- Canada
- Prior art keywords
- wire
- cutter
- stripper
- pair
- crank shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
- H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
- H02G1/1248—Machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
- Y10T29/5136—Separate tool stations for selective or successive operation on work
- Y10T29/5137—Separate tool stations for selective or successive operation on work including assembling or disassembling station
- Y10T29/5139—Separate tool stations for selective or successive operation on work including assembling or disassembling station and means to sever work prior to disassembling
- Y10T29/514—Separate tool stations for selective or successive operation on work including assembling or disassembling station and means to sever work prior to disassembling comprising means to strip insulation from wire
Abstract
ABSTRACT OF THE DISCLOSURE
A wire cutter and stripper apparatus is disclosed.
A crank means has a crank shaft rotatably mounted on a frame and a crank arm means fixedly mounted on the crank shaft.
The crank arm means is operatively engaged to a cutter and stripper means. An actuator means is operable to rotate the crank shaft to move the cutter and stripper means toward an insulated wire fed intermittently through the wire cutter and stripper apparatus by a wire feed means.
A wire cutter and stripper apparatus is disclosed.
A crank means has a crank shaft rotatably mounted on a frame and a crank arm means fixedly mounted on the crank shaft.
The crank arm means is operatively engaged to a cutter and stripper means. An actuator means is operable to rotate the crank shaft to move the cutter and stripper means toward an insulated wire fed intermittently through the wire cutter and stripper apparatus by a wire feed means.
Description
- ~ ~655~2 S P E C I F I C A T I O N
TI~LE OF ~EE INVENTION
"WIRE CUTTER ~ND ST~IPPER APPAR~TUS"
BACRGROUND OF T~E INVENTION
~ . _ Field of the Invention This invention relates generally to a wire e~d processing apparatus and more particularly to a wire cutter and stripper apparatus incorporated in such wire end proces~ing apparatuse~.
P~ior Art Fig~. 16 and 17 ~how one ~nown wire cutter and stripper apparatus Df the type under COnB~ deratio~. A
vertic~l guide member 150 is mounted on a frame 151 throu~h a mounting member 152. A pair of fir3t and second racks 153, 154 are mounted on the gulde member for vertical mov~ment therealong. A pinion 155 is rotatably mounted on the guide member and meshlngly engage~ the first and second racks 153 r 154 ~ A paix of upper and lower blade holders ~ 156, 157 are secured ts the respective upper ends of ~he ; 20 first and second racks 153, 154. A pair of upper ~tripper blades 158, 159 and an upper cutter blade 160 are carried by the upper blade holder 156 while the lower blade holder 157 carries a pair of lower stripper blade~ 161, 162 and a - lowex cutter blade 163. An actuator rod 164 i~ secured to the lower end of tha first rack 153 for vertically moving the first rack 153. Thus, the upper and lower cutter and stripper blades are moved koward each other by the actuator rod 164 through the racks 153 J 154 and pinion 155 to sever an insulated wlre 165 a~d to cut through the insulation thereof on oppo~ite 8ida8 of the line of severing of the wire, the insulated wire being intermittently fed by a predetermine~ length. With this construction, the actuator rod 164 and the cutter and stripper blades move at the same speed. Thus, the amount of movement of those blades is proportional to time, a~ shown in a SQli~d~ n Fig.
15. As a result, the presence of any backlash a.nd play in the drive sy~tem for the blades would adversely affect the cutting of the in3ulation of the wire by the stripper blades l~ore ~pecifically, where the t~tal amount of movement of the ~tripper ~lades does not reach a predstermined level, the insulation i5 not completely cut throug~ by the stripper blades~ ~'his prevents the proper stripping operation. On the o~her hand, the total amount o~ movement exceeds the predetermined level, the ~tripper blades cut ~hrough the insulation lnto ~he wire. Thi~ is unde~irabl~ because ~he stripped end of the wire has a reduced mechanical strengthO
UMMARY OF THE INVENTION
It is therefore ~n object of this invention to provide a wire cut~er and ~trlpper apparatu~ in whlch the tQtal amount of movement of 8tr~ pper blades is kept
TI~LE OF ~EE INVENTION
"WIRE CUTTER ~ND ST~IPPER APPAR~TUS"
BACRGROUND OF T~E INVENTION
~ . _ Field of the Invention This invention relates generally to a wire e~d processing apparatus and more particularly to a wire cutter and stripper apparatus incorporated in such wire end proces~ing apparatuse~.
P~ior Art Fig~. 16 and 17 ~how one ~nown wire cutter and stripper apparatus Df the type under COnB~ deratio~. A
vertic~l guide member 150 is mounted on a frame 151 throu~h a mounting member 152. A pair of fir3t and second racks 153, 154 are mounted on the gulde member for vertical mov~ment therealong. A pinion 155 is rotatably mounted on the guide member and meshlngly engage~ the first and second racks 153 r 154 ~ A paix of upper and lower blade holders ~ 156, 157 are secured ts the respective upper ends of ~he ; 20 first and second racks 153, 154. A pair of upper ~tripper blades 158, 159 and an upper cutter blade 160 are carried by the upper blade holder 156 while the lower blade holder 157 carries a pair of lower stripper blade~ 161, 162 and a - lowex cutter blade 163. An actuator rod 164 i~ secured to the lower end of tha first rack 153 for vertically moving the first rack 153. Thus, the upper and lower cutter and stripper blades are moved koward each other by the actuator rod 164 through the racks 153 J 154 and pinion 155 to sever an insulated wlre 165 a~d to cut through the insulation thereof on oppo~ite 8ida8 of the line of severing of the wire, the insulated wire being intermittently fed by a predetermine~ length. With this construction, the actuator rod 164 and the cutter and stripper blades move at the same speed. Thus, the amount of movement of those blades is proportional to time, a~ shown in a SQli~d~ n Fig.
15. As a result, the presence of any backlash a.nd play in the drive sy~tem for the blades would adversely affect the cutting of the in3ulation of the wire by the stripper blades l~ore ~pecifically, where the t~tal amount of movement of the ~tripper ~lades does not reach a predstermined level, the insulation i5 not completely cut throug~ by the stripper blades~ ~'his prevents the proper stripping operation. On the o~her hand, the total amount o~ movement exceeds the predetermined level, the ~tripper blades cut ~hrough the insulation lnto ~he wire. Thi~ is unde~irabl~ because ~he stripped end of the wire has a reduced mechanical strengthO
UMMARY OF THE INVENTION
It is therefore ~n object of this invention to provide a wire cut~er and ~trlpper apparatu~ in whlch the tQtal amount of movement of 8tr~ pper blades is kept
- 2 -~ 1~55~'~
accurately to a predetermined level regardle~s of backla~h and play in a drive ~ystem or the blade~.
According to the pregent i~vention~ there i~ provided a wire cutte.r ~nd stripper apparatus whlch comprises a fxame;
a wire feed means on the frame for advanciny an insulated wire by a predetermined length; a cuttex and stripper mechanism including a cutter means mounted on the frame, a stripper means mounted on ~he fram~, a crank mean~ ha~ing a cranX shaft rotatably mounted on the fram~ and a crank arm means fixedly mounted on the orank shaft, and an actuator means operable to ro~ate the cran~ shaft to move the cutter and ~tripper means toward he insulated wire to cut the wixe and the insulation, respectively, the crank arm means being operatively erlgaged to the cutter a~d stripper mean~; a moving means mounted on the frame and operable to move ~he clamp mean~ away from the cutter means and stripper maan~
: aft~r the cu~ter meanfi and the ~tripper means cut tbe wire and the insulation, re pectively~
Other advantages, feature~ and additional objects of the present invention will become manifest to those versed in the art upon making reference to the detai}ed descript~on and the accompanying sbeet~ of drawing~ in which a preferred e~bodiment incorpora~ing the principles of the present : inYention i~ shown by way of an illustrative example, 25 BR~ F DESCRIPTXON OF THE DR~WING~;
_ Fig. 1 ~s a fxont levational view of a wire end ~ ~655~2 proce~sin~ apparatus;
Fig~ 2 is a top plan view of the ~pparatus;
Fig. 3 is a top plan view o~ a first moving mechani~m and wire ~eed mean~;
Flg. 4 is a cros~sectional ~iew taken along the line IV-IV of Fig. 3;
FigO 5 is a cross-sectional view of a ~ir~t clamp means;
Fig. S is a cross-sectional view o a 3econd ~lamp means;
Fig. 7 is a partly broken, side ele~tional view of a cutter and stripper mechanism;
Fig. 8 is a front elevational view of the cutter and ~tripper mechanism;
Flg. 9 is a fragmentary top plan view o~ a ~econd moving mechanism;
Fig. 10 is~a partly ~roken, side elevational view of the second moving mec~anism as viewed in the direc~ion X of Fig. 9;
Fig. 11 is a partly broken, e~evational view of the second m~ing mechanism as v~ewed i~ the direction XI of Fig~ 9;
Fig~ 12 is an elevational view oE a guiae plate as viewed in the direction XII of Fig. 11;
Fig. 13 i~ a front elevational view of a con~eyox mea~s;
Fig. 14 is a cross-~ectional view of the conveyor : - 4 -} ~5~2 means taken along the llne XIV-XIV of F~g. 13;
Fig. 15 is a graph showing the relation ~etwe~n time and t~e amount o~ mov~ment o~ strlpper blades; and Figs. 16 and 17 are elevational vi~ws of cutter a~d stripper m~chanism accordlng ko the prior ark.
DESCRIPTION OF T~E PREF:ERR$D EMBODIMENT
Figs. 1 and 2 show apparatus 10 for process~ng ~nds of an insula~ed wire. The apparatus 10 comprises a wire : stralghtening means 11, a wire length measuring means 12, a cutter and stripper asse~bly 13, a terminal fastening device 14 and a conveyor means lS. The wire ~traightenlng means 11 include~ a palr of roller assemblys lla, llb, tha roller assem~ly lla having a fir3t row of side roller~ and a second row o side r~ller~ urged against ~he first row o~
roller~ while the roller asse~bly llb has a row of upper rollers and a row of lower rollers urged against the rvw of upper rollers. rrhe insulated wire 16 ~ upplied from a ~pool 17 passes be~ween ~le ~ir~t ~nd second rows o~ rollers o~ the roller assembly lla and the rows of upper and lower xollers of the roller a~embly llb. The wire ~traightenin~
~eans 11 ~erves to straighten the wire 16 which has been wound around the spool 17. The wire le~gth measuring device 12 comprises a drive pulley 12a, a driven pulley 12 and ~ encorder12cdisposed therebetween. ~he wire 16 transported from the wlre straightening means 12 is passed through the drive and driven pulleys 12a, 12b, the wire : - 5 ~0 5 ~ 2 being held ta~t between the two pulley~ 12a~ l~b. The encorder 12c is held in contact with the insulated wi~e 16 for rotation so that the encorder feed~ a ~ensing ~ignal to a dxlve m~an~ (not shown~ to stop the s~.e after a predetermine~d length of wire 16 is delivered through the wire length measur~ng device 12, the drive means ser~ing to drive the drive pulley 12a for rotation. Thus, the wire 16 i~ lntermlttently advanced by the predete~mined length.
According to an Lmportant aspect of the present 10 invention~ there i8 provided the cutter and stripper assambly 13 which com~rises a wire feed means 18, a fir~t moving mechanism 19, a cutter and stripper mechanism 20 and a second moYing mechanism 21.
~eferring to Figs, 3 and 4, the wire feed mean~ 18 comprises a pair of drive and dri~en pulleys 23 9 24 mounted on rPSpective shafts 25, 26 which are rotatably mounted on a movable table 27, the two pulleys 23, 24 being disposed in oppo~ed relation to each other. The shat 25 i5 connected to a drive mean~ ~not ~hown) for being driven for rotation. The drive and driven pulleys 23, ~4 are rotated in opposite directions by a cross-loaded belt 28 arra~ged thexeon. The two pulleys 23, 24 are urged toward each o~her by a spring 29 arxanged o~ the shafts 25, 26 ~o that the insulated wire 16 i8 gr~ pped by the peripherie~ of the ~5 pullays 23, 24. ~hus, the wire 16 i~ intermittently advanced by the pulley~ 23, 24 by a predetermlned length.
As best shown {n Fig. 3, a first clamp means 30 and ~ :~6~5~
a second clamp means 31 are provided on the movable t~ble 27 in the path of traval o~ the in3ulated wire 16, these clamp mea~ 30, 31 ~erving to clamp the wir~ 16 against mov~ment. ~s shown in Fig~ 5, the fir~t: clamp mean~ 30 comprises a pair of opposed upper and lower ~aws 3~, 33, the lower jaw 33 being secured to the movable tabl0 27 through a mounting means 34 and ha~ing a vertical hole 33~
~ormed ~herethrough. ~ pin 35 is slidably received i~ the hole 33a and has an upper end secured to the upper jaw 32, 1~ the pin havi~g a head portion 35a at it~ lower end. A coil spring 36 i~ wound around the pin 35 and acts between the head portio~ 35a and the underside of the lower jaw 33 so that the upper jaw 32 is normally urged toward the lower ~aw 33 unaer a predetermined load. An a~tuator arm 3~ is pivotall~ mounted on a guld~ member ~9 by a shaft 40, and is engageable at one end 38a with the head portion 35a to urge the upper jaw 32 away from the lower jaw 33~ The actuator arm 38 is actuated ~y a drive means (not shown)~
The insulated wire 16 is lntroduced between and gripped by the upper and lower jaws 32, 33~
A~ shown in Fi~. 6, the second clamp means 3}
includes a pair of opposed upper and lower jaws 4~, 43, the : lower jaw 43 being 6ecured to the movable table 27 through a mounting mean~ 43a. A pa~r o~ pins 44, 45 are ~ecured at their upper ends to the upper jaw 42 and slidably extend through the lower jaw 43, the mounting means 43a and the movable table 27, th~ lower ends of ~he plns 44, 45 extendinq downwardly ~rom the movable table 27. A pair of stud ~olts 46, 47 ara loosely fitted in respec~ive ap2r~ures 42a, 42b of the upp~r ~aw 42 and extend into the lower jaw 43 and the mounting me~ns 43a. ~ pair of coll springs 48, 49 are mounted around the stud bolts 46, 47, re~pectively, and act between t~le upper surface of the upper jaw 42 and the upper portio~s of the stud bolts 46~ 47~ With this arrang~ment, the ~pper jaw 42 i~ normally urged by the coil springs 48, ~9 toward the lower jaw 43~ ~n actuator anm 50 i~ p~votally mounted on tne guide member 39 by a shaft 51, and is engageable at one end 50a with the lower ends of the pins ~4, 45 to urge the upper jaw 42 away from the lower jaw 43.
The actuator arm 50 is actuated by a driv~ means ~not shown).
The insulated wire 16 i8 introduced between and gripped by t~e upper and lower jaws 42, 43. The cooperating surfaces of jaw~ 32, 33 and jaws 4~, 43 are made coarse to facilitate the gripping of ~he wire }6~
Referri~g to Figs. 3 to 6, the first mo~ing mechani6m 19 includes the guide me~bex 39 mounted on a rame 55, ~he guide me~ber 39 being dispo~ed horlzontally and having a guid~ groove 39a extending perpe~dicular to the path of travel of t~e insulatea wire 16. A cross slide 56 i5 mounted on the guide member 39 and i9 movable along ~he guide groove 39a. The cross slide ~6 ha~ a guide groove 56a extending parallel to the path of travel of the in~ulated wire 16. The movable table 27 is mounted on the cros~ slide 56 and is mo~able along the guide groove 56a. ~ piston rod , J ~5'12 57 is connected to the cross slide 56 to actuate the same -to move along the guide groove 39a. A guide roller 58 is secured to the underside of the movable table 27. A pivot-al member 60 is pivotally mounted on the frame 55 by a bolt 61, the pivotal member 60 having an elongated portion 60a wi-th a guide groove 60b normally disposed perpendicular to the path of travel of the insulated wire 16. The guide roller 58 is rece.ived in the guide groove 60b for movement therealong. The pivotal member 60 has an arm portion 60c to which an actuator rod 62 is connected to actuate the pivotal member 60 to be pivotally moved about the shaft 61.
The actuator rod 62 is actuated by a drive means ~not .shown).
According to an important aspect of the present in-vention, the cutter and stripper mechanism 20 is provided~
Referring to Figs. 7 and 8, a vertical mounting member 65 is mounted on the frame 55. A crank shaft 66 is supported by the mounting member 65 for rotation about its axis ~
disposed horizontally. A pinion 66a is formed on one end portion of the crank shaft 66, the pinion 66a meshingly en-gaging a rack 67 supported by the mounting member 65 for vertical movemen-t. The rack 67 is coupled at its lower end to an actuator 68 through a connecting link 69, -the actu-ator 68 being driven by a drive means ~not shown~ for swinging movement about its pivot point B as indicated in phantom in Fig. 7 so that the rack 67 is vertically moved to rotate the crank shaft 66 through the pinion 66a. A pair g ~ ~ .
~ .
5 5 ~ ~
of eccentrlc di~cs 71, 72 of the sa~e diameter are mounted on the crank sha~t ~ fox xotation therewith. The two discs 71, 72 are mo~m~ed on the cranX shat 6fi ln diametrically oppo~ed rela~ion, and the centers P~, P2 of ~e two dlsc8 71, 72 are off~et by an equal distance r from the axis A o~
the crank sha~t 66 in opposite directions. Thus, the cQnters PlI P~ lie in a common line passing through the axis ~ o~
the crank shaft 66. A palr of elongated connecting m~mber~
73, 74 of ide~tical make ha~e identical clrculax aper-ture~
73a, 74a formed therethrou~h~ re~pactively~ The pair of eccentric discs 71, 72 are rotatably fitted in the re~pectlve ~pertures 73a, 74a through a~nular bearing member~ 75, 76. A vertical gu~de ~ember 80 i8 secured to the ~ounti~g member 6S and extend~ upwardly beyond it~ A
pair o~ el~g ted slide ma~bers 81, 82 are mounted on tha guide member 80 for vertical ~liding movement therealong, the two slide me~ber~ being ~idable independently of each other. The lcwer ends of tha slide membars ~1, 82 are plvotally connected by pin8 83 ~ 84 ~o the upper ends o~ the 2U connecting member~ 73, 741 re~pectlvely~ A pair o~ opposed upper and lower cutter holders 85, 86 are secured to the upper ends of the slide mem~ers 82, 81, respectl~ely~ As shown ln Fig. 8, the ~nsulated wire 16, fed ~rom the wire feed mean~ 18, i~ pas~ed between the upper and lower cutter ~S holder~ 8~, 86 from right to left~
A pair of upper and lower cu~tar blades 90, 91 are mounted on the upper and lower cutter hol~er~ 85, 8~g 5 ~ 2 respectively. A pair of upper ~rlppex blades 92, 93 are ~ount~d on the upper ~utter holder 85 on oppcsite 31des of ~he upper cutter blade 30. Similarly, a pair o~ lower ~tripper blades 94, 95 axe mounted on the low~r cutter holder 86 on oppo~ite sides of the lower cutter blade 91.
Th~ upper and lower ~trippar blades 92, 94 and the upper and low~x ~tripper blades 93, 95 cooperate re~p~ctively to cut through the in~ula~ion of the insulated wire 16 on oppo~ite sides o the cu~ter blades 90, 91. In~ulation remo~ing elem~nts 98, 99 are fixedly mounted on the guide member 80 for removing the sever~d insulation3 dl~po~ed between the cutter blades and the respective ~tripper blad~.
A pair of ce~tering plate~ 100, 101 are mounted on the upper and lowex cutter holders 85, 36, re~pecti~ely, the centerlng lS platQ3 lC0, 101 havin~ a palr of cooperating ~-shaped ~otchss lOOa, lOla for placing the insulated wire 16 at a proper position durin~ the cutting and strippiny operat~vn.
The second moving mechanism 21 is described with referencQ to Figs. 9 to 12. A pivo~al member 10~ ~ 5 20 pivotally mounted on the frame 55 by a pivot shaft 104 and disposed horizo~l~ally. ~n actuator rod 105 is connected to the pivotal member 103 for pivotally moving ~he ~ame~ The actuator ~od 105 i~ actuated by a drive means (not shown~.
The pivotal member 103 ha~ at one side a gulde groove 103a of a channel-3hap~d cross-section which is normally disposed perpen~icular to the pa~h of tr~vel of ~he i~ulated w~re lG. A movable ~locX 10~ i5 received in the J Jl~5~2 guide groove 103a ~or movement ~herealo~g. An actuator rod 108 i~ connected to the ~novable block }08 ~or moving t~e ~ame along th~ guide groove 103a, the actuator rod 108 ~eing actuated by a drive means ~not shown)0 A ca~ing 10 is mounted on the ~ovable block 1~7, and a pinion 110 i~
rota~ably mounted within t~la ca~ing 109 by a shat 111.
A pair o~ first and ~econd racks 112, 113 are vertically movably ~lounted in tbe ca~ing 109, the two rack~ 112, 113 being in mesh with the pinion 110 interposed ~harebetween.
A roller 1~4 iB rotatably mounted on the lower end of the fir~t rack 112. An upper ~aw 115 i.s ~ecur~d to the upper end o~ the ~irst rac~ 112 while a lower jaw 116 is secured to the upper end o~ the ~econd rack 113 in oppo~ed relation to the upper jaw 115. The econd rack 113 has a vertical bore 113a therein in which a coil ~pring lla i9 receiv~d for urgi~g the s~cond rac~ upwardly ~o that the insulated wire 16 i8 gripped by tha ~aws }15, 116. Thus, the ~aw~
115, 11~ consti~utes a wire clamp mea~s. The oppo~ed ~urfaces of ~he jaws llS, 116 are ~ade coarse to facilitate the gripping operation. An opexatlng rod 120 i8 disposed in vertically regi~try with the roller 114 so as to be engageable with the roller or upwardly moving the ~irst rack 11~, with the upper jaw 115 moved apart rom the lower ~aw 1~6 through the plnion 110. The rod 120 18 diBpoOed parallel ~o ~he guide groo~e 193a and connected at one end to an actua~or arm 121. The actuator arm 121 i8 actuated by an actuatox rod 122 for pivotal movement about a pivot pin 123 so that the first rack 112 is movecl upwardly -through -the operating rod 120. As best shown in Fig. 12, a link 125 is connected a-t one end to one end of the actuator arm 121 and at the other end to a guide pla-te 126 having a notch 126a. The guide plate 126 is pivotally mounted on a mount-ing means 127 on the frame 55, the guide plate being normal ly spring biased to a position shown in a solid line in Fig.
12. The pivotal movement of the actuator arm 121 causes the guide plate 126 to move into a position shown in phantom in Fig. 12. The guide plate 126 is disposed between the second ; moving mechanism 21 and the conveyor means 15. The notch 126a serves to hold the end of the severed wire.
The conveyor means 15 is described with reference to Figs. 13 and 14. An upstanding support member 130 is mounted on the frame 55, and a mounting member 131 is mounted on the support member 130 by a bolt 132. A motor 133 is mounted on -the mounting member 131, and a gear 134 is mounted on a drive shaft 133a of the motor 133~ A pair of shafts 135, 136 are rotatably mounted on the mounting member 131 through a bearing member 137. A pair o~ gears 138, 139 are mounted on one end of the shafts 135, 136, respectively.
The gear 134 is in mesh with the gear 138 which is in mesh with gear 139. With this arrangement, when the mo-tor 133 is powered, the gears 138, 139 are rotated in opposite direc-tions. A pair of opposed drive pulleys 140, 141 are fixedly mounted on the other ends of the shafts 135, 136. A pair oE
opposed driven pulleys 142, 143 are rotatably -------------- -~ ~55~2 mounted on the mounting member 131, and a pair of belts 144, 145 exte~d around the respective drive and driven pulleys 140, 141, 142, 143 as shown in Fig. 13. Guide pulleys 146, 147 are arranged hetween each pair of drive and driven pulleys and rotatably mounted on the mounting member 131. The lower flight o~ ths belt 144 and the upper flight of the belt 145 is held in co~tact with each other, the lower flight and the upper flight being moved in a dire~tion ~ when the motor 133 is energized. When ~he guide plate 126 is moved to the position shown in phantom in Fig.
12 with the severed wire length held in the notch 126a, the wire length i-s held at one end between the aforesaid lower flight and upper flight and convey d into a storage position in an orderly manner.
When the first clamp means 3~ clamps the severed wire a~d is ~oved to a position shown in phantom in Fig. 3 by the first moving mechanism lg, the terminal fastening device 14 serve~ to automatically fasten a terminal to the leading end of the wire.
A mode of operation of the wire end processing apparatu~ 10 will now be described.
The insulated wire 16 i9 supplied from the spool 17 and passes through the wire straightening means 11. Then, the wire 16 is intermittently advanced by the predetermined length by the wire length measuring device 12~ The wire 16 is advanced ~y the wire feed means 18 through the first moving mechanism 19 and ~le cutter and stripper ~echanism 20 ~ - 14 -~ 1~5542 into the second moving m chanism 21. The wire 16 is intermittently advanced by a predetermined length by the wire faed means 18 whereupon the rotation o-f the drive pulley 23 is s~opped by means of an associated microswitch (not shown). The pair of jaws 32, 33 o:E the f~rst al~mp means 30 and t.he pair of jaws 42, 43 of the second clamp means 31 are respectively held apart from each other ~y the respective actuator arms 38, 50 urging the pin 35 and the pins 44, 45 upwardly. The pair of iaws 115, 116 are held apart from each other by the rod 120 urging the first rack 112 upwardly~ Similarly, the upper and lower cutter and ~tripper blades are held apart rom each other. Whe~ the rota~ion of the drive pulley 23 is stopped, the ac~.uator arms 38 and 5~ are an~ularly moved downwaxdly ~Figs. S and 6) so that the insulated wire 16 is gripped by the jaws 32, 33 and the jaws 42, 43. Simultaneously, the actuator arm 121 is angularly moved downwardly (Fig. 11) a~out the pin 123 by the actuator rod 122, and t~e operating rod 120 is moved dow~wardly ~Fig. 10) to move ~le first rack 112 upwardly and to move ~he second rack 113 t}~vugh the pinion 110 and the spring 118 so that the insulated wire 16 is gripped by the jaws 115, 116. Then, the cutter and stripper mechanism 20 is actuated to sever the wire 16 and cut through the insulation thereof on opposite sides of the 25 li~e of ~evering of the wire. ~ore specifically, the actuator 68 is angularly mo~ed counterclockwise l~ig. 7 about the pivot point B 90 that the crank shaft 66 is 5 ~ 2 rotated 180 into the position shown in Figs~ 7 and 8, the rotation of the crank shaft being effected through the rack 67 and pinion 6~a. During this rotation of the crank shaft 66, the eccentric discs 71, 72 serve as crank arm mean~, and the slide me~ber 82 is gxadually moved downwardly while the slide member 81 is gradually moved ~ so that the upper and lower blade holders 85, 86 are mo~ed toward each other. ~hus, the upper and lower cu~ter blades 90, 91 cooperate to sever the insulated wire 16, and s~multaneously with the SeYering of the wire, the upper and lower stripper blades 92, 94 and the upper and lower ~tripper blades 93, 95 out through the insulation of the insulated wire on opposite sides of the line of severing o~ the wire.
The relation be~ween tLme and the a~ount of move~ent of the upper and lower cutter an~ 3tripper ~lades is shown in a broken line in a graph in Fig. 15 wherein ~ is the total amount of movement of these bladesO When the angle between ~he vertical line and the line passing through the axis A
of the crank shaft 66 and the centers Pl and P 2 of the eccentric disc~ 71~ 72 is small, that is to say, at an initial and a final portion of the s~roke of the cu~er and stripper blades, the amount of movement of these blades per unit tLme i9 mall. Thus, by virtue of th~ proYision of the eccentric discs 71, 72 mounted on the crank shaf~ 66, the amount of movement of the bladas relative to the amount of angular movement of the actuator 68 i~ small a~ a final portion of the stroke of the blades. This en ures that the ~ - 16 J ~s~
total amount of ~ovement o~ the cutter and stripper blade~
is ~ept accurately to a predetermined llevel regardless of backlash and play in the drive syskem for the~e bladesl ~huq, the upper and lower stripper ~lades 92, 93, 94, 95 properly cut through the insulation of lthe insulated wire 16. Actually, the broken line in Fiy. :L5, ~howing the relation between time and the amount of movement of the blades, is represented in a slightly modified for,m due to the presence of the connecting link 69~
After the wire 16 is severed with the insulation cut through, the first moving mechanism 19 is actuate~. ~Iore speci.~ically, the pivotal member 60 is rotated ahout the shaft ~1 by the actuator rod 62 into the position shown in phantom in Fig. 3 so that the ~ava~le table 27 is moved in the directiv~ X to strip the insulation from the leading end of the wire held by ~he cl~p means 30, 31. Subsequently, the actuator rod 57 i9 moved in the direction Y so that the cross ~lide 56 is moved in the direction ~ with the guide roller 58 moving along the guide groove 60~. In this condition, the leading end of the wire is positioned in the terminal fastening device 14 ~7here a terminal is automatically fa~tened to the leadi~g e~d of t~e wire.
: ThenJ the mo~able table 27 is returned to it~ initial position ahown in Fiy. 3.
25. Sin~ultaneously with the operatlon of the pivotal member 60, the pivotal member 103 o~ the second moving mechanis~ 21 is xotated about the shaft lQ4 by the actuator ~ ~ ~5~ 2 rod 105 into the position shown in phantom in Fig~ 9 s~
that the jaws 115, 116 are moved in a left hand direction to strip th~ insulation rom the trailing end of the s~vered wire leng~h. Su~sequently, th~ movable block 107 is moved along the guide groove 103a by the actuator rod 108 in the direction Q, the casing 109 heing moved together with the mo~able bloc~ 107. In this condition, the jaws 115, 116 holding the wire length is positioned adjacent to th8 guide plate 126 with ~he trailing end portion of the wire length received in the notch 126a. Then, the operating rod 120 is moved upwardly by the actuator rod 122 through the actuator arm 121 to move the first rack 112 throuyh the roller 14 so that the jaws 115, 116 are moved apart from eacll other. At this time/ the guide plate 126 is rotated into the position shown in phanto~ in Fig. 12 so that the trailing end of the wire leng~h is moved toward and held by the conveyor belts 144, 145 and conveyed in the direction T (Fig. 13) into ~he storage position. Then, the pivotal member 103 and the movable block 107 are returned by the actuator rods 105, lG8 into their initial position~ shown in a solid line in Figs~ 9 and 10.
While the wire end proce~ing apparatus, incorporating the cutter and stripper a~sembly has been spscifical~y ~hown and described herein, the invention itself is not to be re~tricted by the exact showing of the drawings or the description thereof. For example, the second mo~ing mech~nism 21 may be identical in construction to ~he first mo~ing 5 ~ ~
mechanism 19, and another terminal fas~ening device may be provided to cooperate with such a second moving mechan~sm to ~asten a terminal to the trail.ing end of ~he wire length.
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accurately to a predetermined level regardle~s of backla~h and play in a drive ~ystem or the blade~.
According to the pregent i~vention~ there i~ provided a wire cutte.r ~nd stripper apparatus whlch comprises a fxame;
a wire feed means on the frame for advanciny an insulated wire by a predetermined length; a cuttex and stripper mechanism including a cutter means mounted on the frame, a stripper means mounted on ~he fram~, a crank mean~ ha~ing a cranX shaft rotatably mounted on the fram~ and a crank arm means fixedly mounted on the orank shaft, and an actuator means operable to ro~ate the cran~ shaft to move the cutter and ~tripper means toward he insulated wire to cut the wixe and the insulation, respectively, the crank arm means being operatively erlgaged to the cutter a~d stripper mean~; a moving means mounted on the frame and operable to move ~he clamp mean~ away from the cutter means and stripper maan~
: aft~r the cu~ter meanfi and the ~tripper means cut tbe wire and the insulation, re pectively~
Other advantages, feature~ and additional objects of the present invention will become manifest to those versed in the art upon making reference to the detai}ed descript~on and the accompanying sbeet~ of drawing~ in which a preferred e~bodiment incorpora~ing the principles of the present : inYention i~ shown by way of an illustrative example, 25 BR~ F DESCRIPTXON OF THE DR~WING~;
_ Fig. 1 ~s a fxont levational view of a wire end ~ ~655~2 proce~sin~ apparatus;
Fig~ 2 is a top plan view of the ~pparatus;
Fig. 3 is a top plan view o~ a first moving mechani~m and wire ~eed mean~;
Flg. 4 is a cros~sectional ~iew taken along the line IV-IV of Fig. 3;
FigO 5 is a cross-sectional view of a ~ir~t clamp means;
Fig. S is a cross-sectional view o a 3econd ~lamp means;
Fig. 7 is a partly broken, side ele~tional view of a cutter and stripper mechanism;
Fig. 8 is a front elevational view of the cutter and ~tripper mechanism;
Flg. 9 is a fragmentary top plan view o~ a ~econd moving mechanism;
Fig. 10 is~a partly ~roken, side elevational view of the second moving mec~anism as viewed in the direc~ion X of Fig. 9;
Fig. 11 is a partly broken, e~evational view of the second m~ing mechanism as v~ewed i~ the direction XI of Fig~ 9;
Fig~ 12 is an elevational view oE a guiae plate as viewed in the direction XII of Fig. 11;
Fig. 13 i~ a front elevational view of a con~eyox mea~s;
Fig. 14 is a cross-~ectional view of the conveyor : - 4 -} ~5~2 means taken along the llne XIV-XIV of F~g. 13;
Fig. 15 is a graph showing the relation ~etwe~n time and t~e amount o~ mov~ment o~ strlpper blades; and Figs. 16 and 17 are elevational vi~ws of cutter a~d stripper m~chanism accordlng ko the prior ark.
DESCRIPTION OF T~E PREF:ERR$D EMBODIMENT
Figs. 1 and 2 show apparatus 10 for process~ng ~nds of an insula~ed wire. The apparatus 10 comprises a wire : stralghtening means 11, a wire length measuring means 12, a cutter and stripper asse~bly 13, a terminal fastening device 14 and a conveyor means lS. The wire ~traightenlng means 11 include~ a palr of roller assemblys lla, llb, tha roller assem~ly lla having a fir3t row of side roller~ and a second row o side r~ller~ urged against ~he first row o~
roller~ while the roller asse~bly llb has a row of upper rollers and a row of lower rollers urged against the rvw of upper rollers. rrhe insulated wire 16 ~ upplied from a ~pool 17 passes be~ween ~le ~ir~t ~nd second rows o~ rollers o~ the roller assembly lla and the rows of upper and lower xollers of the roller a~embly llb. The wire ~traightenin~
~eans 11 ~erves to straighten the wire 16 which has been wound around the spool 17. The wire le~gth measuring device 12 comprises a drive pulley 12a, a driven pulley 12 and ~ encorder12cdisposed therebetween. ~he wire 16 transported from the wlre straightening means 12 is passed through the drive and driven pulleys 12a, 12b, the wire : - 5 ~0 5 ~ 2 being held ta~t between the two pulley~ 12a~ l~b. The encorder 12c is held in contact with the insulated wi~e 16 for rotation so that the encorder feed~ a ~ensing ~ignal to a dxlve m~an~ (not shown~ to stop the s~.e after a predetermine~d length of wire 16 is delivered through the wire length measur~ng device 12, the drive means ser~ing to drive the drive pulley 12a for rotation. Thus, the wire 16 i~ lntermlttently advanced by the predete~mined length.
According to an Lmportant aspect of the present 10 invention~ there i8 provided the cutter and stripper assambly 13 which com~rises a wire feed means 18, a fir~t moving mechanism 19, a cutter and stripper mechanism 20 and a second moYing mechanism 21.
~eferring to Figs, 3 and 4, the wire feed mean~ 18 comprises a pair of drive and dri~en pulleys 23 9 24 mounted on rPSpective shafts 25, 26 which are rotatably mounted on a movable table 27, the two pulleys 23, 24 being disposed in oppo~ed relation to each other. The shat 25 i5 connected to a drive mean~ ~not ~hown) for being driven for rotation. The drive and driven pulleys 23, ~4 are rotated in opposite directions by a cross-loaded belt 28 arra~ged thexeon. The two pulleys 23, 24 are urged toward each o~her by a spring 29 arxanged o~ the shafts 25, 26 ~o that the insulated wire 16 i8 gr~ pped by the peripherie~ of the ~5 pullays 23, 24. ~hus, the wire 16 i~ intermittently advanced by the pulley~ 23, 24 by a predetermlned length.
As best shown {n Fig. 3, a first clamp means 30 and ~ :~6~5~
a second clamp means 31 are provided on the movable t~ble 27 in the path of traval o~ the in3ulated wire 16, these clamp mea~ 30, 31 ~erving to clamp the wir~ 16 against mov~ment. ~s shown in Fig~ 5, the fir~t: clamp mean~ 30 comprises a pair of opposed upper and lower ~aws 3~, 33, the lower jaw 33 being secured to the movable tabl0 27 through a mounting means 34 and ha~ing a vertical hole 33~
~ormed ~herethrough. ~ pin 35 is slidably received i~ the hole 33a and has an upper end secured to the upper jaw 32, 1~ the pin havi~g a head portion 35a at it~ lower end. A coil spring 36 i~ wound around the pin 35 and acts between the head portio~ 35a and the underside of the lower jaw 33 so that the upper jaw 32 is normally urged toward the lower ~aw 33 unaer a predetermined load. An a~tuator arm 3~ is pivotall~ mounted on a guld~ member ~9 by a shaft 40, and is engageable at one end 38a with the head portion 35a to urge the upper jaw 32 away from the lower jaw 33~ The actuator arm 38 is actuated ~y a drive means (not shown)~
The insulated wire 16 is lntroduced between and gripped by the upper and lower jaws 32, 33~
A~ shown in Fi~. 6, the second clamp means 3}
includes a pair of opposed upper and lower jaws 4~, 43, the : lower jaw 43 being 6ecured to the movable table 27 through a mounting mean~ 43a. A pa~r o~ pins 44, 45 are ~ecured at their upper ends to the upper jaw 42 and slidably extend through the lower jaw 43, the mounting means 43a and the movable table 27, th~ lower ends of ~he plns 44, 45 extendinq downwardly ~rom the movable table 27. A pair of stud ~olts 46, 47 ara loosely fitted in respec~ive ap2r~ures 42a, 42b of the upp~r ~aw 42 and extend into the lower jaw 43 and the mounting me~ns 43a. ~ pair of coll springs 48, 49 are mounted around the stud bolts 46, 47, re~pectively, and act between t~le upper surface of the upper jaw 42 and the upper portio~s of the stud bolts 46~ 47~ With this arrang~ment, the ~pper jaw 42 i~ normally urged by the coil springs 48, ~9 toward the lower jaw 43~ ~n actuator anm 50 i~ p~votally mounted on tne guide member 39 by a shaft 51, and is engageable at one end 50a with the lower ends of the pins ~4, 45 to urge the upper jaw 42 away from the lower jaw 43.
The actuator arm 50 is actuated by a driv~ means ~not shown).
The insulated wire 16 i8 introduced between and gripped by t~e upper and lower jaws 42, 43. The cooperating surfaces of jaw~ 32, 33 and jaws 4~, 43 are made coarse to facilitate the gripping of ~he wire }6~
Referri~g to Figs. 3 to 6, the first mo~ing mechani6m 19 includes the guide me~bex 39 mounted on a rame 55, ~he guide me~ber 39 being dispo~ed horlzontally and having a guid~ groove 39a extending perpe~dicular to the path of travel of t~e insulatea wire 16. A cross slide 56 i5 mounted on the guide member 39 and i9 movable along ~he guide groove 39a. The cross slide ~6 ha~ a guide groove 56a extending parallel to the path of travel of the in~ulated wire 16. The movable table 27 is mounted on the cros~ slide 56 and is mo~able along the guide groove 56a. ~ piston rod , J ~5'12 57 is connected to the cross slide 56 to actuate the same -to move along the guide groove 39a. A guide roller 58 is secured to the underside of the movable table 27. A pivot-al member 60 is pivotally mounted on the frame 55 by a bolt 61, the pivotal member 60 having an elongated portion 60a wi-th a guide groove 60b normally disposed perpendicular to the path of travel of the insulated wire 16. The guide roller 58 is rece.ived in the guide groove 60b for movement therealong. The pivotal member 60 has an arm portion 60c to which an actuator rod 62 is connected to actuate the pivotal member 60 to be pivotally moved about the shaft 61.
The actuator rod 62 is actuated by a drive means ~not .shown).
According to an important aspect of the present in-vention, the cutter and stripper mechanism 20 is provided~
Referring to Figs. 7 and 8, a vertical mounting member 65 is mounted on the frame 55. A crank shaft 66 is supported by the mounting member 65 for rotation about its axis ~
disposed horizontally. A pinion 66a is formed on one end portion of the crank shaft 66, the pinion 66a meshingly en-gaging a rack 67 supported by the mounting member 65 for vertical movemen-t. The rack 67 is coupled at its lower end to an actuator 68 through a connecting link 69, -the actu-ator 68 being driven by a drive means ~not shown~ for swinging movement about its pivot point B as indicated in phantom in Fig. 7 so that the rack 67 is vertically moved to rotate the crank shaft 66 through the pinion 66a. A pair g ~ ~ .
~ .
5 5 ~ ~
of eccentrlc di~cs 71, 72 of the sa~e diameter are mounted on the crank sha~t ~ fox xotation therewith. The two discs 71, 72 are mo~m~ed on the cranX shat 6fi ln diametrically oppo~ed rela~ion, and the centers P~, P2 of ~e two dlsc8 71, 72 are off~et by an equal distance r from the axis A o~
the crank sha~t 66 in opposite directions. Thus, the cQnters PlI P~ lie in a common line passing through the axis ~ o~
the crank shaft 66. A palr of elongated connecting m~mber~
73, 74 of ide~tical make ha~e identical clrculax aper-ture~
73a, 74a formed therethrou~h~ re~pactively~ The pair of eccentric discs 71, 72 are rotatably fitted in the re~pectlve ~pertures 73a, 74a through a~nular bearing member~ 75, 76. A vertical gu~de ~ember 80 i8 secured to the ~ounti~g member 6S and extend~ upwardly beyond it~ A
pair o~ el~g ted slide ma~bers 81, 82 are mounted on tha guide member 80 for vertical ~liding movement therealong, the two slide me~ber~ being ~idable independently of each other. The lcwer ends of tha slide membars ~1, 82 are plvotally connected by pin8 83 ~ 84 ~o the upper ends o~ the 2U connecting member~ 73, 741 re~pectlvely~ A pair o~ opposed upper and lower cutter holders 85, 86 are secured to the upper ends of the slide mem~ers 82, 81, respectl~ely~ As shown ln Fig. 8, the ~nsulated wire 16, fed ~rom the wire feed mean~ 18, i~ pas~ed between the upper and lower cutter ~S holder~ 8~, 86 from right to left~
A pair of upper and lower cu~tar blades 90, 91 are mounted on the upper and lower cutter hol~er~ 85, 8~g 5 ~ 2 respectively. A pair of upper ~rlppex blades 92, 93 are ~ount~d on the upper ~utter holder 85 on oppcsite 31des of ~he upper cutter blade 30. Similarly, a pair o~ lower ~tripper blades 94, 95 axe mounted on the low~r cutter holder 86 on oppo~ite sides of the lower cutter blade 91.
Th~ upper and lower ~trippar blades 92, 94 and the upper and low~x ~tripper blades 93, 95 cooperate re~p~ctively to cut through the in~ula~ion of the insulated wire 16 on oppo~ite sides o the cu~ter blades 90, 91. In~ulation remo~ing elem~nts 98, 99 are fixedly mounted on the guide member 80 for removing the sever~d insulation3 dl~po~ed between the cutter blades and the respective ~tripper blad~.
A pair of ce~tering plate~ 100, 101 are mounted on the upper and lowex cutter holders 85, 36, re~pecti~ely, the centerlng lS platQ3 lC0, 101 havin~ a palr of cooperating ~-shaped ~otchss lOOa, lOla for placing the insulated wire 16 at a proper position durin~ the cutting and strippiny operat~vn.
The second moving mechanism 21 is described with referencQ to Figs. 9 to 12. A pivo~al member 10~ ~ 5 20 pivotally mounted on the frame 55 by a pivot shaft 104 and disposed horizo~l~ally. ~n actuator rod 105 is connected to the pivotal member 103 for pivotally moving ~he ~ame~ The actuator ~od 105 i~ actuated by a drive means (not shown~.
The pivotal member 103 ha~ at one side a gulde groove 103a of a channel-3hap~d cross-section which is normally disposed perpen~icular to the pa~h of tr~vel of ~he i~ulated w~re lG. A movable ~locX 10~ i5 received in the J Jl~5~2 guide groove 103a ~or movement ~herealo~g. An actuator rod 108 i~ connected to the ~novable block }08 ~or moving t~e ~ame along th~ guide groove 103a, the actuator rod 108 ~eing actuated by a drive means ~not shown)0 A ca~ing 10 is mounted on the ~ovable block 1~7, and a pinion 110 i~
rota~ably mounted within t~la ca~ing 109 by a shat 111.
A pair o~ first and ~econd racks 112, 113 are vertically movably ~lounted in tbe ca~ing 109, the two rack~ 112, 113 being in mesh with the pinion 110 interposed ~harebetween.
A roller 1~4 iB rotatably mounted on the lower end of the fir~t rack 112. An upper ~aw 115 i.s ~ecur~d to the upper end o~ the ~irst rac~ 112 while a lower jaw 116 is secured to the upper end o~ the ~econd rack 113 in oppo~ed relation to the upper jaw 115. The econd rack 113 has a vertical bore 113a therein in which a coil ~pring lla i9 receiv~d for urgi~g the s~cond rac~ upwardly ~o that the insulated wire 16 i8 gripped by tha ~aws }15, 116. Thus, the ~aw~
115, 11~ consti~utes a wire clamp mea~s. The oppo~ed ~urfaces of ~he jaws llS, 116 are ~ade coarse to facilitate the gripping operation. An opexatlng rod 120 i8 disposed in vertically regi~try with the roller 114 so as to be engageable with the roller or upwardly moving the ~irst rack 11~, with the upper jaw 115 moved apart rom the lower ~aw 1~6 through the plnion 110. The rod 120 18 diBpoOed parallel ~o ~he guide groo~e 193a and connected at one end to an actua~or arm 121. The actuator arm 121 i8 actuated by an actuatox rod 122 for pivotal movement about a pivot pin 123 so that the first rack 112 is movecl upwardly -through -the operating rod 120. As best shown in Fig. 12, a link 125 is connected a-t one end to one end of the actuator arm 121 and at the other end to a guide pla-te 126 having a notch 126a. The guide plate 126 is pivotally mounted on a mount-ing means 127 on the frame 55, the guide plate being normal ly spring biased to a position shown in a solid line in Fig.
12. The pivotal movement of the actuator arm 121 causes the guide plate 126 to move into a position shown in phantom in Fig. 12. The guide plate 126 is disposed between the second ; moving mechanism 21 and the conveyor means 15. The notch 126a serves to hold the end of the severed wire.
The conveyor means 15 is described with reference to Figs. 13 and 14. An upstanding support member 130 is mounted on the frame 55, and a mounting member 131 is mounted on the support member 130 by a bolt 132. A motor 133 is mounted on -the mounting member 131, and a gear 134 is mounted on a drive shaft 133a of the motor 133~ A pair of shafts 135, 136 are rotatably mounted on the mounting member 131 through a bearing member 137. A pair o~ gears 138, 139 are mounted on one end of the shafts 135, 136, respectively.
The gear 134 is in mesh with the gear 138 which is in mesh with gear 139. With this arrangement, when the mo-tor 133 is powered, the gears 138, 139 are rotated in opposite direc-tions. A pair of opposed drive pulleys 140, 141 are fixedly mounted on the other ends of the shafts 135, 136. A pair oE
opposed driven pulleys 142, 143 are rotatably -------------- -~ ~55~2 mounted on the mounting member 131, and a pair of belts 144, 145 exte~d around the respective drive and driven pulleys 140, 141, 142, 143 as shown in Fig. 13. Guide pulleys 146, 147 are arranged hetween each pair of drive and driven pulleys and rotatably mounted on the mounting member 131. The lower flight o~ ths belt 144 and the upper flight of the belt 145 is held in co~tact with each other, the lower flight and the upper flight being moved in a dire~tion ~ when the motor 133 is energized. When ~he guide plate 126 is moved to the position shown in phantom in Fig.
12 with the severed wire length held in the notch 126a, the wire length i-s held at one end between the aforesaid lower flight and upper flight and convey d into a storage position in an orderly manner.
When the first clamp means 3~ clamps the severed wire a~d is ~oved to a position shown in phantom in Fig. 3 by the first moving mechanism lg, the terminal fastening device 14 serve~ to automatically fasten a terminal to the leading end of the wire.
A mode of operation of the wire end processing apparatu~ 10 will now be described.
The insulated wire 16 i9 supplied from the spool 17 and passes through the wire straightening means 11. Then, the wire 16 is intermittently advanced by the predetermined length by the wire length measuring device 12~ The wire 16 is advanced ~y the wire feed means 18 through the first moving mechanism 19 and ~le cutter and stripper ~echanism 20 ~ - 14 -~ 1~5542 into the second moving m chanism 21. The wire 16 is intermittently advanced by a predetermined length by the wire faed means 18 whereupon the rotation o-f the drive pulley 23 is s~opped by means of an associated microswitch (not shown). The pair of jaws 32, 33 o:E the f~rst al~mp means 30 and t.he pair of jaws 42, 43 of the second clamp means 31 are respectively held apart from each other ~y the respective actuator arms 38, 50 urging the pin 35 and the pins 44, 45 upwardly. The pair of iaws 115, 116 are held apart from each other by the rod 120 urging the first rack 112 upwardly~ Similarly, the upper and lower cutter and ~tripper blades are held apart rom each other. Whe~ the rota~ion of the drive pulley 23 is stopped, the ac~.uator arms 38 and 5~ are an~ularly moved downwaxdly ~Figs. S and 6) so that the insulated wire 16 is gripped by the jaws 32, 33 and the jaws 42, 43. Simultaneously, the actuator arm 121 is angularly moved downwardly (Fig. 11) a~out the pin 123 by the actuator rod 122, and t~e operating rod 120 is moved dow~wardly ~Fig. 10) to move ~le first rack 112 upwardly and to move ~he second rack 113 t}~vugh the pinion 110 and the spring 118 so that the insulated wire 16 is gripped by the jaws 115, 116. Then, the cutter and stripper mechanism 20 is actuated to sever the wire 16 and cut through the insulation thereof on opposite sides of the 25 li~e of ~evering of the wire. ~ore specifically, the actuator 68 is angularly mo~ed counterclockwise l~ig. 7 about the pivot point B 90 that the crank shaft 66 is 5 ~ 2 rotated 180 into the position shown in Figs~ 7 and 8, the rotation of the crank shaft being effected through the rack 67 and pinion 6~a. During this rotation of the crank shaft 66, the eccentric discs 71, 72 serve as crank arm mean~, and the slide me~ber 82 is gxadually moved downwardly while the slide member 81 is gradually moved ~ so that the upper and lower blade holders 85, 86 are mo~ed toward each other. ~hus, the upper and lower cu~ter blades 90, 91 cooperate to sever the insulated wire 16, and s~multaneously with the SeYering of the wire, the upper and lower stripper blades 92, 94 and the upper and lower ~tripper blades 93, 95 out through the insulation of the insulated wire on opposite sides of the line of severing o~ the wire.
The relation be~ween tLme and the a~ount of move~ent of the upper and lower cutter an~ 3tripper ~lades is shown in a broken line in a graph in Fig. 15 wherein ~ is the total amount of movement of these bladesO When the angle between ~he vertical line and the line passing through the axis A
of the crank shaft 66 and the centers Pl and P 2 of the eccentric disc~ 71~ 72 is small, that is to say, at an initial and a final portion of the s~roke of the cu~er and stripper blades, the amount of movement of these blades per unit tLme i9 mall. Thus, by virtue of th~ proYision of the eccentric discs 71, 72 mounted on the crank shaf~ 66, the amount of movement of the bladas relative to the amount of angular movement of the actuator 68 i~ small a~ a final portion of the stroke of the blades. This en ures that the ~ - 16 J ~s~
total amount of ~ovement o~ the cutter and stripper blade~
is ~ept accurately to a predetermined llevel regardless of backlash and play in the drive syskem for the~e bladesl ~huq, the upper and lower stripper ~lades 92, 93, 94, 95 properly cut through the insulation of lthe insulated wire 16. Actually, the broken line in Fiy. :L5, ~howing the relation between time and the amount of movement of the blades, is represented in a slightly modified for,m due to the presence of the connecting link 69~
After the wire 16 is severed with the insulation cut through, the first moving mechanism 19 is actuate~. ~Iore speci.~ically, the pivotal member 60 is rotated ahout the shaft ~1 by the actuator rod 62 into the position shown in phantom in Fig. 3 so that the ~ava~le table 27 is moved in the directiv~ X to strip the insulation from the leading end of the wire held by ~he cl~p means 30, 31. Subsequently, the actuator rod 57 i9 moved in the direction Y so that the cross ~lide 56 is moved in the direction ~ with the guide roller 58 moving along the guide groove 60~. In this condition, the leading end of the wire is positioned in the terminal fastening device 14 ~7here a terminal is automatically fa~tened to the leadi~g e~d of t~e wire.
: ThenJ the mo~able table 27 is returned to it~ initial position ahown in Fiy. 3.
25. Sin~ultaneously with the operatlon of the pivotal member 60, the pivotal member 103 o~ the second moving mechanis~ 21 is xotated about the shaft lQ4 by the actuator ~ ~ ~5~ 2 rod 105 into the position shown in phantom in Fig~ 9 s~
that the jaws 115, 116 are moved in a left hand direction to strip th~ insulation rom the trailing end of the s~vered wire leng~h. Su~sequently, th~ movable block 107 is moved along the guide groove 103a by the actuator rod 108 in the direction Q, the casing 109 heing moved together with the mo~able bloc~ 107. In this condition, the jaws 115, 116 holding the wire length is positioned adjacent to th8 guide plate 126 with ~he trailing end portion of the wire length received in the notch 126a. Then, the operating rod 120 is moved upwardly by the actuator rod 122 through the actuator arm 121 to move the first rack 112 throuyh the roller 14 so that the jaws 115, 116 are moved apart from eacll other. At this time/ the guide plate 126 is rotated into the position shown in phanto~ in Fig. 12 so that the trailing end of the wire leng~h is moved toward and held by the conveyor belts 144, 145 and conveyed in the direction T (Fig. 13) into ~he storage position. Then, the pivotal member 103 and the movable block 107 are returned by the actuator rods 105, lG8 into their initial position~ shown in a solid line in Figs~ 9 and 10.
While the wire end proce~ing apparatus, incorporating the cutter and stripper a~sembly has been spscifical~y ~hown and described herein, the invention itself is not to be re~tricted by the exact showing of the drawings or the description thereof. For example, the second mo~ing mech~nism 21 may be identical in construction to ~he first mo~ing 5 ~ ~
mechanism 19, and another terminal fas~ening device may be provided to cooperate with such a second moving mechan~sm to ~asten a terminal to the trail.ing end of ~he wire length.
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Claims (3)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A wire cutter and stripper apparatus which comprises:
(a) a frame;
(b) a wire feed means on said frame for advancing an insulated wire by a predetermined length;
(c) a cutter and stripper mechanism including (1) a crank means having a crank shaft rotatably mounted on said frame, a pair of identical crank arms in the form of discs fixedly mounted on said crank shaft in eccentric relation so that the centers of said discs are offset from the axis of said crank shaft by an equal distance, said eccentric discs being disposed in diametrically opposed relation, (2) a pair of elongated connecting members each having a circular aperture formed there-through at one end thereof, said pair of eccentric discs being rotatably received in said circular apertures of said connecting members, (3) a pair of slide members mounted on said frame for movement along the axes thereof, one ends of said slide members being pivotally connected to the other ends of said connecting members, respectively, (4) a pair of opposed cutter and stripper holders mounted respectively on the other ends of the said slide members, said cutter and stripper holders holding respective cutter blades and stripper blades, and (5) an actuator means operable to angularly move said crank shaft through a predeter-mined angle to move said cutter and stripper holders toward each other so that said cutter blades and said stripper blades cut the wire and the insulation, respectively.
(a) a frame;
(b) a wire feed means on said frame for advancing an insulated wire by a predetermined length;
(c) a cutter and stripper mechanism including (1) a crank means having a crank shaft rotatably mounted on said frame, a pair of identical crank arms in the form of discs fixedly mounted on said crank shaft in eccentric relation so that the centers of said discs are offset from the axis of said crank shaft by an equal distance, said eccentric discs being disposed in diametrically opposed relation, (2) a pair of elongated connecting members each having a circular aperture formed there-through at one end thereof, said pair of eccentric discs being rotatably received in said circular apertures of said connecting members, (3) a pair of slide members mounted on said frame for movement along the axes thereof, one ends of said slide members being pivotally connected to the other ends of said connecting members, respectively, (4) a pair of opposed cutter and stripper holders mounted respectively on the other ends of the said slide members, said cutter and stripper holders holding respective cutter blades and stripper blades, and (5) an actuator means operable to angularly move said crank shaft through a predeter-mined angle to move said cutter and stripper holders toward each other so that said cutter blades and said stripper blades cut the wire and the insulation, respectively.
2. A wire cutter and stripper apparatus according to claim 1, further including a rack supported on said frame for movement along an axis thereof, said crank shaft having a pinion portion which meshingly engages said rack, and said actuator means being operatively engaged to said rack for moving it along its axis to thereby angularly move said crank shaft.
3. A wire cutter and stripper apparatus according to claim 1, in which said wire clamp means comprises a pair of first and second wire clamps disposed on opposite sides of said cutter and stripper mechanism, said moving means comprising a pair of first and second moving mechanisms operable respectively to first move said first and second wire clamps away from said cutter and stripper mechanism along the path of movement of the insulated wire and then to move said first and second wire clamps in a direction transverse to the path of movement of the in-sulated wire.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55151072A JPS5775512A (en) | 1980-10-28 | 1980-10-28 | Stripper for terminal treating machine of coated wire |
| JP55-151072 | 1980-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1165542A true CA1165542A (en) | 1984-04-17 |
Family
ID=15510686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000378740A Expired CA1165542A (en) | 1980-10-28 | 1981-06-01 | Wire cutter and stripper apparatus |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4441386A (en) |
| EP (1) | EP0050909B1 (en) |
| JP (1) | JPS5775512A (en) |
| CA (1) | CA1165542A (en) |
| DE (1) | DE3169951D1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4622733A (en) * | 1984-01-25 | 1986-11-18 | Sumitomo Electric Industries, Ltd. | Branch wire connecting apparatus |
| US4612696A (en) * | 1985-02-15 | 1986-09-23 | Eubanks Engineering Co. | Robot apparatus for handling wire workpiece during termination |
| US6351865B1 (en) | 2000-02-23 | 2002-03-05 | Jack De Donato | Combination wire cutter, wire stripper, and punch-down tool |
| US6588302B1 (en) * | 2000-08-16 | 2003-07-08 | Orbital Technologies, Inc. | Orbiting blade coaxial cable cutter/stripper |
| US7013782B2 (en) * | 2000-08-16 | 2006-03-21 | Orbital Technologies, Inc. | Apparatus and method for cutting and stripping covering layers from a filamentary core including both rotary and reciprocating cutting blades |
| CN103259221B (en) * | 2013-05-03 | 2015-09-23 | 常熟泓淋电线电缆有限公司 | Waste wire punck-down block |
| CN104426046B (en) * | 2013-09-05 | 2016-09-28 | 纬创资通股份有限公司 | Winding displacement installation tool |
| CN110293192A (en) * | 2019-07-30 | 2019-10-01 | 北京首钢建设集团有限公司 | A kind of foot-operated reinforcing bar pincers |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US710865A (en) * | 1902-01-08 | 1902-10-07 | Charles W Hollender | Eccentric. |
| US810766A (en) * | 1905-01-06 | 1906-01-23 | Hugo John | Driving mechanism. |
| US2268728A (en) * | 1941-02-27 | 1942-01-06 | Toop Frederick | Shearing mechanism |
| US2811063A (en) * | 1953-09-08 | 1957-10-29 | Robert M Mcmanigal | Wire cutter and insulation stripping apparatus |
| US3032860A (en) * | 1957-12-16 | 1962-05-08 | Artos Engineering Co | Apparatus for producing electrical conductors |
| US3327578A (en) * | 1965-08-04 | 1967-06-27 | Hallden Machine Company | Flying shear providing for multiple minimum cut-lengths and further variable cut-lengths |
| US3368428A (en) * | 1966-09-12 | 1968-02-13 | Artos Engineering Co | Wire cutting and stripping machine |
| DE1765588A1 (en) * | 1968-06-14 | 1971-07-29 | Pressluft Stoelzel Ohg | Device for cutting and simultaneous stepped stripping of coaxial cables |
| US3857306A (en) * | 1973-06-15 | 1974-12-31 | Artos Engineering Co | Cable cutting and stripping machine |
| JPS5090977A (en) * | 1973-12-15 | 1975-07-21 | ||
| DE2857307C2 (en) * | 1977-03-25 | 1982-05-19 | Shin Meiwa Industry Co.,Ltd., Nishinomiya, Hyogo | Cutting and stripping device |
| JPS5536070A (en) * | 1978-09-07 | 1980-03-13 | Osawa Press Seisakusho:Kk | Terminal treatment machine of wire rod |
-
1980
- 1980-10-28 JP JP55151072A patent/JPS5775512A/en active Granted
-
1981
- 1981-01-19 US US06/226,075 patent/US4441386A/en not_active Expired - Fee Related
- 1981-05-27 EP EP81302340A patent/EP0050909B1/en not_active Expired
- 1981-05-27 DE DE8181302340T patent/DE3169951D1/en not_active Expired
- 1981-06-01 CA CA000378740A patent/CA1165542A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0050909A1 (en) | 1982-05-05 |
| JPS5775512A (en) | 1982-05-12 |
| EP0050909B1 (en) | 1985-04-17 |
| DE3169951D1 (en) | 1985-05-23 |
| JPS6126285B2 (en) | 1986-06-19 |
| US4441386A (en) | 1984-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |