US3838552A

US3838552A - Packaging machine

Info

Publication number: US3838552A
Application number: US00320308A
Authority: US
Inventors: G Beymer; E Hooley
Original assignee: Individual
Current assignee: Individual
Priority date: 1973-01-02
Filing date: 1973-01-02
Publication date: 1974-10-01
Anticipated expiration: 1991-10-01
Also published as: CA998330A

Abstract

The machine comprises a framework rotatably supporting a receptacle for pre-loading of the articles or groups of articles to be enclosed within a bag. The receptacle sequentially discharges the articles downwardly into a chute for deposit on a drop door. Intermittent operation of the drop door releases the articles into the path of a reciprocative shoe which is disposed within a moving U-shaped run of bag stock to advance the articles along said bag stock. Roll means receive the bag stock and act along opposed longitudinal edges thereof with lands on the roll means biasing the stock at intervals sealing same at spaced transverse areas. Blade means carried by said roll means is extensible to sever the bag stock along sealed areas thereof.

Description

United States Patent 1191 Hooley et al.

1451 Oct. 1,1974

[54] PACKAGING MACHINE 22 Filed: Jan. 2, 1973 21 Appl. No.: 320,308

2,889,671 6/1959 Weisman 53/182 X 3,030,747 4/1962 Kapowicz 53/182 X 3,507,094 4/1970 Coles 53/183 3,706,183 12/1972 Talarico 53/329 Primary Examiner-Robert L. Spruill Attorney, Agent, or Firm.1ames D. Givnan, Jr.

[57] ABSTRACT [52] US. Cl. 53/182 The machine comprises a framework rotatably sup- [51] Int. Cl..... B65b 9/12, B65b 51/28, B65b 61/08 porting a receptacle for pre-loading of the articles or [58] Field of Search 53/28, 29, 177, 180, 182, groups of articles to be enclosed within a bag. The re- 53/183 ceptacle sequentially discharges the articles downwardly into a chute for deposit on a drop door. Inter- [56] References Cited mittent operation of the drop door releases the articles UNITED STATES PATENTS into the path of a reciprocative shoe which is disposed 510,821 12/1893 Sanders 100 187 Within moving u'sllaped run of bag Stock to advallce 528,751 11/1894 Weinman et al 53 181 the amcles along bag Stockmeans F 1,472,274 10 1923 Kirkpatrick 100/240 the bag Stock and act along Opposed longltudma' 1,986,422 1 1935 Zwoyer 53/131 edges thereof With lands Oh the means biasing the 2,348,201 5/1944 Barnett 53/182 X stock at intervals sealing same at spaced transverse ar- 2,382,175 8/1945 Salfisberg... 53/180 eas. Blade means carried by said roll means is extensi- 3 9 12H945 Barnett 182 X ble to sever the bag stock along sealed areas thereof. 2,730,852 l/l956 Clark 53/182 X 2,747,346 5/1956 Tigerman et a1 53/28 13 Claims, 16 Drawing Figures PACKAGING MACHINE BACKGROUND OF THE INVENTION The invention relates generally to a machine for packaging of articles within bags formed by the machine from continuous strip material which may be of the type having a latex coating making opposing bag surfaces sealable by pressure. Articles to be bagged are sorted into receptacles with automatic loading means positioning articles within a partially formed bag. Roll means continuously seals a longitudinal edge of the bags formed while additionally engaging the bag material at intervals to transversely seal same.

The prior art, to the extent known, includes a number of machines for the forming of bags from continuous material, most commonly a thermoplastic film, with heated machinecomponents sealing and severing the bag. The prior art machines include complex subassemblies for the intermittent advancement of the bag material and the actuation of heated sealing and severing means against the bag sides. The articles packaged by such machines are most commonly of unitary nature, inserted directly by hand or turret carried dispensing apparatus into opposing halves of the bag material. No provision is made for sorting of parts to be packaged into desired quantitites nor for delivery of same lengthwise along bag stock to a bag being formed.

SUMMARY OF THE INVENTION The instant machine includes a compartmented moving receptacle into which articles or an assortment of articles to be enclosed within a bag may be placed. In the latter instance where an assortment of articles are to be packaged within a single bag, each receptacle may serve to receive a sspecfic combination of items to be bagged which may be selected and pre-loaded by machine attendants in a fast, convenient manner as opposed to direct insertion within a bag.

The compartments of the moving receptacle sequentially discharge the articles or article therein downwarly whereupon the same are positioned by automatic bag loading means into a partially formed bag. Coordinated operation of the receptacles and said loader means assures the individual bagging of the article of aggregation of articles discharged from a single receptacle. The bag loading g means also serves to bunch the articles into a compact arrangement permitting bagging with a closely confining bag.

The automatic bag loading means is disposed longitudinally within a trough formed by a continuously moving run of U-shaped bag stock. The formation of the bags is a continuous operation with the bag stock being drawn from a roll and entrained below a chute comprising part of the bag loading means. A shoe of said loading means propels the article or bunched article assortment into the bag while same is being formed prior to formation of a longitudinal seal and a second transverse seal. A first formed transverse seal is at least partially completed prior to bag loading. Known bag loading apparatuses involve costly. highly complex equipment momentarily supporting bags. closed on three sides. for filling by overhead means.

The present machine forms. loads, seals and severs bags at a very fast rate greatly exceeding bagging ma chine where a machine attendant manually deposits material directly into the partially formed bag. The earlier mentioned overhead filling means is typically for the bagging or granular material of fluids and isnot suited to packaging solid random sized articles.

The continuous bag stock is formed in generally U- shaped and then directed between driven roll means which, in sequence, forms a first transversely sealed edge, a longitudinally sealed edge and a second transversely sealed edge. Circular portions of the roll means are in continuous rolling contact with the opposed longitudinal marginal edges of the strip to unreel the bag stock and to close same while lands on the rolls bias the folded bag stock at intervals to provide transverse, longitudinally spaced seals. The rolls exert a pressure on the above-mentioned longitudinal and transverse bag areas to form corresponding seals without heated components found throughout the prior art machines. The stock from which the bags are formed is treated with an adhesive such as a latex coating during manufacture which coating when subjected to pressure, securely joins the opposed coated surfaces. To enhance positive engagement between the rolls and the bag stock the rolls are provided with an irregullar surface.

The machine includes blade means for severing the stock transversely along transverse sealed areas of the bags formed. Blades are housed within a roll member and are momentarily extended in a radial direction for cutting of the continuous bag stock strip. The cut made passes through both the transverse and longitudinally extending seals. A companion roll, opposite the blade carrying roll, is slotted to receive the blade edges after its passage through the bag stock. Importantly the stock is securely held during cutting against relative movement with the moving roll members. The foregoing roll arrangement dispenses with the need for complex indexing components found in prior art momentarily stopping the stock for sealing and cutting operations. Additionally dispensed with are complex drive means intermittently actuating cutters and sealing means in a reciprocating manner.

An important aspect of the present invention is to provide a bagging machines of a compact nature for bagging assorted articles such as poultry giblets. The machine is of relatively uncomplicated design with commensurate lower initial cost that prior bagging machines. The size of the machine permits it to be a readily incorporated into existing processing lines. One or two workers selecting the assortment of giblets to be packaged and pre-loading same into a compartmented receptacle can significantly out produce a battery of workers.

A further object of the present invention is to provide a moving receptacle compartmented for the reception of articles whether they be singular of groups of articles of the same or differing type. In the processing of poultry, for example, it is is an accepted practice to package poultry giblets for inclusion in the poultry package as marketed. A variety of giblets are continuously delivered to a turntable of the present machine from which machine attendants select the type and quantity of parts to be packaged within a bag. The pre-loading of the giblets selected into a single, highly accessible compartment. may be done in a rapid manner with subsequent transfer of the giblets to the bag, sealing of the bag and severing of the bag all being done automatically by machine operation.

Another important objective of the instant machine in the provision of bag loading means which receives the article, or group thereof, discharged from the compartmented receptacle and repositions same horizontally into a bag during bag formation. Heretofore it has been the practice to form at least three sides of a bag with the bagged article being manually inserted within the partially completed bag. The present machine loads each bag by advancement of the articles to be bagged in the direction of travel of the bag stock. A cylinder and a loading shoe actuated thereby are located in a novel manner within the partially folded run of paper. Intermittent operation of said cylinder positions the articles in a closely bunched manner whereupon the remaining two sides of the bag are completed. Bag loading and operation of the machines rolls are such as to ,effect the novel formation of a bag about the articles being bagged in distinction to machines loading open ended bags.

BRIEF DESCRIPTION OF THE DRAWINGS of the machine taken approximately along line 33 of FIG. 2,

FIG. 4 is a view similar to FIG. 3 with the receptacle in phantom lines to disclose underlying features,

FIG. 5 is a side elevational view of a bag loading means in its normal extended position,

FIF. 6 is a right hand end elevational view of FIG. 5,

FIG. 7 is an elevational view of machine roll members taken along line 77 of FIG. 2 with same positioned at a blade actuated position,.

FIG. 8 is an elevational view of a sectioned roll member taken along line 88 of FIG. 7,

FIG. 9 is a plan view of the roll members taken downwardly along line 99 of FIG. 7,

FIG. 10 is an enlarged sectional view of a blade fragment and lands of the roll members taken along line 10-10 of FIG. 7,

FIG. 11 is a view of the roller chain drives for the machine taken downwardly along line ll11 of FIG. 2,

FIGS. 12 and 13 show schematically an air valve and actuating cam controlling an air cylinder with the corresponding positions of the roll members,

FIGS. 14 and 15 show schematically a second air valve and actuating cam with corresponding positions of the roll members, and

FIG. 16 is a schematic of the machine pneumatic systern.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS With continuing reference to the foregoing drawings and particularly FIGS. 1 and 2 thereof, the reference numeral 10 indicates generally the present machine which may be associated with delivery conveyor means 11 for delivery of articles to be packaged and conveyor means 12 for off loading of the bagged articles.

A machine framework comprises a welded angle iron structure with legs 13 all being interconnected by upper and lower angle iron crossmembers I4 and I5 with the latter supporting a base 19. Sheet metal sidewalls 16 and end walls 17 are all removably attached to the framework in any suitable manner such as by insertable pins not shown. A top wall 18 of sheet metal is in rested placement on crossmembers l4 and includes a flanged perimeter.

Articles to be packaged may be delivered by suitable means, such as conveyor 11; onto a circular turntable 20 rotatably supported by a'shaft 21 suitably journalled at its ends within framework supported bearings as at 22. A motor 23 with an internal reduction drive drives turntable 20 at a slow speed via a sprocket-roller chain drive 24. A wiper blade 25 is radially disposed on turntable 20 for diverting those articles not selected for packaging into a chute 26. In a packaging operation where the articles are of an uniform quality the chute 26 is dispensed with.

Adjacent turntable 20 is a compartmented receptacle 27 comprising part of bag pre-loading means generally at 26. Receptacle 27 defines a plurality of vertical walled recessed areas or compartments 27A within each of which machine attendants place a quantity of selected articles to be enclosed within a single bag. Concentric with receptacle 27 is a retainer ring 29, an underlying stationary plate 28 of like diameter the upper surface 28A of which constitutes a bottom closure for each recessed areas 27A. Compartmented receptacle 27 driven by a shaft 30 and flange 31 (FIG. 5) with pins 31A imparting rotational movement to the receptacle. A rectangular opening 288 in stationary plate 28 permits sequential gravitional discharge of articles from each of recessed area 27A as they successively pass thereover. The opening is somewhat wider than the receptacle areas 27A to assure complete discharge of the articles. As best viewed in FIG. 6 an opening 18A in the top wall of the machine permits article passage into the divergent upper end of a chute As best viewed in FIGS. 5 and 6, chute structure 30 is of formed sheet metal flanged at 32 for supported engagement with framework members 34. Inclined chute walls at 33 terminate downwardly in walls 34 interconnected by a bottom wall 35. A rear wall 39 partially closes a rearward end of the chute structure and is disposed so as to have its lower edge 39A in wiping contact with a drop door 36. Chute 30 formed from sheet metal, preferably stainless steel, may include different chute configurations. For example, the same may terminate downwardly in a semicircular shape with a shoe 37 being of corresponding shape.

Integral with drop door 36 is a right angularly disposed shoe 37, both of which along with chute 30 comprise part of the bag loading means which further includes actuating means in the form of a pneumatic cylinder 38 and rod 38A. Horizontal door 36 and shoe 37 are of a transverse dimension somewhat less than the corresponding transverse dimension of chute 30 with the reduced clearance permitting unobstructed reciprocal motion of the door and shoe. Passing below chute 30 and shaped thereby is a continuous run of bag stock 40. Supporting the run of a bag stock 40 and spaced below chute 30 is a support S.

With reference to FIG. 2, the cylinder 38 is trunnion mounted at 388 to the machine framework, rearward of the cylinder center of gravity, resulting in shoe 37 at all times being in lightly resting contact along its lower edge with the bottom wall 35 of the chute. Preferably cylinder 38, in those machines packaging food products, is readily detachable to allow convenient cleanmg.

Bag stock 40, when the machine is used in the pack aging of poultry giblets, is paper of a wet strength of thirty pounds supplied in strip form from a roll 41 rotatably supported by rearwardly projecting arms 42. A weighted nylon straps 43 serves to impart on a drag roll 41. The paper is entrained in a planar trip below a roll 44 which may include piercing elements 44A if desired as in the case of packaging poultry products wherein the bag must be vented. Suitable latex coated paper stock for packaging of food products is manufactured by the Cryovac Division of W. R. Grace and Co.,. The paper surface is coated with latex to provide a paper which may be termed pressure sensitive in that upon being folded to oppositely dispose the latex coated surfaces such may be joined by the application of pressure as by passage of the paper through juxtaposed rolls as later described. The bag stock may, of course, be varied in strength and material type to best suit the bagging operation at hand.

Cylinder 38 is activated at timed intervals by later described components to retract the door-shoe combination from its forward position shown in FIGS. 2 and 5. Retraction thereof is of mementary with the rearward travel of same causing the downward discharge of those articles in place on the drop door 36 by wiping contact of the door surface with rear wall 39 of the chute. The return stroke of door-shoe combination 36-37 is instantaneous.

Forward extension of piston rod 38A in a rapid manner results in shoe 37 bunching or condensing the articles to be packaged with momentum being imparted to said articles to cause same to be propelled forwardly in a forceful manner along the moving shaped run of bag stock. A deflector at 45 insures article retention within bag stock 40 during their forceful discharge from the chute area.

Roll means at 46 serves to form the bags from the continuous U-shaped bag stock by pressing of the strips opposing marginal edges together longitudinally therealong while additionally sealing the leading and trailing transverse edges of the bag. Said roll means comprises companion rolls 47, 48 each having a

circular head portion

49, 50. The head portions are preferably provided with horizontal serrations providing a grooved periphery in intermeshed relationship with the serrations contributing to positive roll-bag stock engagement. Each roll further includes a depending reduced portion below the roll heads, said reduced portions indicated at 51, 52. The outer extremities of the reduced portions constitute lands, typically shown in FIG. 10, each bearing grooved

arcuate surfaces

53, 54. their respective grooved head portions. The grooved surfaces 53, 54 rotate into simultaneous pressing contact with the paper at intervals to form transverse sealed edges TE completing a bag enclosure with

head portions

49, 50 sealing the bags upper longitudinal edge LE parallel to the fold line of the stock.

Cylinder 38 of the bag loading means cycles intermediate the formation ofa bags leading and trailing transverse edges to advance the articles to be bagged into place rearward of a first formed transverse seal. The reduced

portions

51, 52 of each

roll

47, 48 permit passage of the articles therebetween by reason of said por- 6 tions passing through parallel, spaced apart relationship coincident with bag passage.

Roll carrying

shafts

55, 56 are journalled within pairs of bearings associated with upper and lower framework members 14 and 15. A pair of bearings 57 are adjustably received within bearing mounts 58, 59 having screw means 60 permitting lateral adjustment of the axis of shaft 56 and hence the biased relationship of

rolls

47, 48. Shaft 55 is journalled within

bearings

61, 62.

.In addition to scaling of the bags, roll means 46 serves to sever the completed bags from the continuous bag stock. Reciprocative blades 63 (FIGS. 7-10) are housed within roll 47, said blades being diametrically disposed within slots 64 extending vertically along head portion 49 and its associated lands 53. The blades 63 are medially disposed along the grooved lands 53 with each blade extending vertically past the roll ends into sliding engagement with blade retainer arms 65, 66 immediately above and below roll 47. Each retainer arm is secured to shaft 55 by a set screw extending through a

central ring

67, 68. Each arm has a tubular segment extending inwardly from its outer ends which receives a threaded insert 69 within which a blade return spring 70 is carried. The tubular segments of arms 65, 66 are slotted at 65A, 66A to slidably receive the blade ends while arms 65 are additionally slotted at 65B to receive crosspins 71 supporting each blade. Actuating each blade radially outwardly against springs 70 are pairs of upper and

lower pistons

72, 73 working within horizontal bores 74, 75.

Pistons

72, 73 and springs 70 actuate the blades 63 in opposite directions during one cutting stroke. The upper bore 74 extends diametrically through the circular upper head portion of roll 47 while bores 75 are formed within the reduced portion of the roll. Each bore 74, 75 is in communication with a source of air pressure via a bored passageway 78 in shaft 55 and lateral bores 78A. A pivotal air coupling 76 permits an airtight connection between shaft passageway 74 and an air supply line 79.

Companion roll 48 is of like external configuration to roll 47 in that in addition to having grooved stock biasing surfaces it has a pair of diametrically disposed, lengthwise vertical slots 77 extending through its circular head 50 and medially along its reduced lower land portions 52. Slot 77, illustrated typically in FIG. 10, receives the serrated edge of a blade 63 during the blade stroke in response to outward movement of

pistons

72, 73. Prior to and during the blade stroke the paper has been subjected to roll pressure to seal the opposing latex coated surfaces adjacent the cut. As best viewed in FIG. 10, the bag stock is held in biased roll contact both forwardly and rearwardly of extended blade 63 to prevent following of the blade. Continuous counter rotatiori of each

roll

47, 48 draws the paper therebetween and'off supply roll 41 with

circular head portions

49, 50 being in constantbiasing contact with the upper marginal edge of stock 40. The momentum imparted to the severed bags by the rolls results in bag discharge through an end wall opening 17A (FIG. I) of the machine cabinet.

For actuation of cylinder 38 and blade actuating pistons 72. 73 cams at 80 and 81 are provided in place on roll shaft 55. Mounted adjacent said cams for actuation thereby are

air valves

82, 83 disposed in a stacked manner with each having a

roller cam follower

84, 85. For

purposes of timing air valve operation the latter may be positionably mounted relative to the axis of shaft 55.

Air valve 82 is served by a regulated air supply line 86 with valve operation alternately communicating pressure to a pair of lines 82A, 823 which terminate at a four way, double air pilot relay 87. Said relay receives a regulated supply of air via conduit 88 which supply is alternatively directed to opposite ends of cylinder 38 via

lines

89, 90 in accordance with the position of pilot relay 87. Operation of cylinder 38 is as follows. From its normal rod extended position shown wherein drop plate 36 substantially occupies chute 30, the cylinders piston is momentarily retracted by relay directed pressure through line 90 in response to valve 82 being actuated by cam 80. The short dwell period of the cam shown in FIGS. 12 and 13 provides momentary retraction to the combined drop door and shoe 36-37. Return of cam follower 84 ultimately causes relay 87 to reposition for extension of piston rod 38A to its normal position. For ease of understanding, the approximate position of

rolls

47, 48 during cam operation the same is shown schematically in FIGS. 12 and 13.

Air valve 83 is served by a supply line 86A with valve outlet lines 83A, 83B terminating at a second four way, double air pilot relay 91. A source of regulated pressure is provided relay 91 via a conduit 92 with a relay controlled pressure line 79 communicating pressure to the lower end of roll shaft 55 via coupling 76 for operation of

blade pistons

72, 73. The remaining port of relay 91 is vented and upon relay operation permits return of blades 63 by blade return springs 70.

The operation of air valve 83 is shown in FIGS. 14 and in conjunction with a schematic plan view of rolls 47 48 on a highly reduced scale and showing relative roll positions during valve operation. With attention particularly to FIGS. 14 and 16 it will be seen that actuation of air valve 83 positions relay 91 to pressurize line 79. Blades 63 are extended approximately five degrees prior to blade passage through a position normal to the bag stock 40. With attention to FIG. 15 the return of valve 83 to its normal position shifts relay 91 to vent pressurized line 79v whereupon blade springs 70 return the roll carried blades. The clearance between blades 63 and slots 77 in the opposite roll is such as to permit each blade to rotate out of slot engagement.

With attention to FIG. 11 wherein aplan view of upper and lower roller chain drives are shown, the upper roller chain 93 is driven by motor M via a sprocket 94' carried by an output shaft 95 of a reduction drive unit at 96 in FIG. 2. Chain 93 is entrained in its direction of travel past an idler sprocket 97 and in serpentive fashion through

sprockets

98, 99 carried respectively by

roll shafts

56 and 55 and past an idler sprocket 100. Accordingly the

counter rotating rolls

47, 48 are synchronized as is the actuation of pneumatic components by

cams

80, 81 on shaft 55.

A second or lower roller chain at 101 is entrained of receptacle 27 are propelled forwardly by shoe 37 to the bag being formed by

rolls

47, 48. Timing of the forward movement of the shoe and the sealing of a bags leading transverse seal as depicted in H6. 13 is such that said seal is substantially formed by the time the bunched articles have reached their limit of shoe initiated travel. For best sealing it is desirable that the sealing inner surfaces (latex coated) be kept free from contact with moistureas could occur in the packaging of poultry giblets.

With continuing regard to the packaging of food products, it may be desirable for cleaning purposes to mount cylinder 38 in a detachable manner at its rearward end to a rearward extension of the chute. Accordabout a second sprocket 102 on shaft 56 which chain ingly both would be removable as an assembly for individual cleaning. The mounting would permit the shoe to retain its rested relationship on the lowermost portion or web of the chute 30 to assure shoe pickup all articles released by drop door 36. Further, for the same objective, the chute 30 or modified form thereof may be slightly forwardly inclined or pitched.

While we have shown and described but one form of the invention it will be apparent to those skilled in the art that the invention may otherwise be embodied with such embodiments coming under the spirit and scope of the present invention as set forth in the appended claims.

Having thus described the invention what is desired to be secured under a Letters Patent is:

1. A machine for the bagging of articles within bags formed from continuous partially folded bag stock comprising,

a framework adapted to receive a continuous supply of bag stock,

rolls jointly acting on opposite sides of the partially folded bag stock, said rolls including,

cooperating head portions continuously sealing op posed longitudinal edges of the bag stock,

cooperating lands on the rolls transversely sealing the bag stock at intervals therealong,

blade means carried by one of said rolls and adapted for radial movement constituting a cutting stroke of the blade for transversely severing the bag stock along transversely sealed bag areas,

blade actuating means carried by said one roll and operative at recurrent intervals to actuate said blade means during a cutting stroke, and

bag loading means including a shoe acting at recurrent intervals on articles to be bagged to project same along a moving run of bag stock into proximity of the roll means for enclosure by the longitudinal and transverse seals, shoe actuating means operable in a forceful manner in recurring cycles to move the shoe in a rectilinear path.

2. The machine claimed in claim 1 additionally including a deflector having an inclined surface acting on the projected articles. v

3. The machine claimed in claim 1 whereinsaid blade means is slidably housed within one of said rolls, said blade actuating means carried by said one roll includes piston elements responsive to recurrent fluid pressure for radial blade extension.

4. The machine claimed in claim 1 wherein said bag loading means includes a combination shoe and drop door in perpendicular relationship, said drop door momentarily supporting a quantity of articles to be bagged, means in wiping contact with said drop door, said shoe actuating means intermittently actuating said shoe and drop door in a reciprocative manner resulting in wiping of the articles to be bagged from the door and subsequently advancing same in the direction of travel of the bag stock.

5. The machine claimed in claim 4 wherein said bag loading means additionally includes a chute for reception of the articles to be bagged, said drop door normally disposed within the chute and momentarily supporting the articles prior to their repositioning by the shoe.

6. The machine claimed in claim 5 wherein said shoe actuating means is a pneumatic cylinder swingably mounted to the framework within a run of partially folded bag stock, said shoe carried by the outer end of the cylinder piston rod and in rested contact with the chute interior to assure positive contact between the shoe and chute for thorough discharge of articles from the chute.

7. In combination, rolls jointly acting on partially folded bag stock having a pressure sensitive inner sur face, said rolls each including circular head portions in rolling contact with the bag stock forming a longitudinal seal therealong, depending roll portions of reduced section having circumferentially spaced lands thereon for contact with the bag stock at intervals to sequentially form transverse seals, bag loading means including a pneumatic cylinder and a shoe operable intermediate the sequential formation of said transverse seals of a bag to forcefully project a group of articles being bagged towards a formed transverse seal and, blade means within one of said rolls and adapted for radial movement constituting a cutting stroke of the blade for transversely severing the bag stock along the transverse seals, blade actuating means carried by said one roll and operative at recurrent intervals to actuate said blade means during a cutting stroke.

8. The combination claimed in claim 7 additionally including a drop door associated with said shoe and momentarily supporting the group of articles to be bagged prior to their positioning by the shoe, means in wiping contact with said drop door to wipe the articles from the door immediately prior to shoe contact.

9. A machine for the bagging of worker selected articles within bags formed from continuous partially folded bag stock, said machine comprising,

a framework adapted to receive a continuous supply of bag stock,

a powered turntable on said framework for the reception of a varied assortment of articles for travel past workers located adjacent the machine,

bag pre-loading means including a rotating receptacle having upwardly opening compartments therein for receiving worker selected articles and sequentially discharging same in compartmental groups to be separately bagged,

bag loading means including a chute intermittently receiving said groups of articles from said rotating receptacle, a combination show and drop door in perpendicular relationship normally disposed within said chute, said drop door momentarily supporting a group of articles to be separately bagged, means in wiping contact with said drop door, pneumatic means intermittently actuating said shoe and drop door in a rectilinear manner to project the grouped articles along the moving bag stock, and

rolls jointly acting on the bag stock and including circular head portions for continuously sealing opposed longitudinal edges of the partially folded stock, roll portions of, reduced section having circumferentially spaced lands thereon for contact with the bag stock at intervals to form transverse seals, blade means within one of said rolls and having a radial cutting stroke for transversely severing the bag stock along the transverse seals, blade actuating means carried by said one roll and operative at recurrent intervals to actuate said blade means during a cutting stroke.

10. The machine claimed in claim 9 additionally including a deflector having a forwardly inclined surface acting on the grouped articles to compact same immediately prior to their enclosure within a bag.

11. In a machine for the bagging of articles within bags formed from a continuous web of bag stock, said machine including cooperating rolls receiving a partially folded web of bag stock, therebetween, said rolls having circular head portions in opposed rolling contact with the bag stock and having roll portions of reduced section with circumferentially spaced lands thereon for contact with the bag stock at intervals to form transversely extending sealed areas on said web, means for advancing articles to be bagged along the partially folded web to the proximity of said rolls, the improvement comprising blade means disposed longitudinally along one of said rolls and adapted for radial movement through the transversely extending sealed areas during a cutting stroke for severing of the bag stock, blade actuating means including piston elements responsive to recurrent fluid pressure, a pair of roll carrying shafts, one of said shafts axially bored to provide an air passageway therealong in communication with laterally extending shaft bores, said one roll defining horizontally directed bores for said piston elements in communication with the bores in said bored shaft whereby pressurized air may be communicated to said horizontal bores for piston actuation. i

12. The invention claimed in claim 11 additionally including cam means mounted on said one shaft, means actuated by said cam means for regulating a flow of air under pressure through said one shaft for actuation of said piston elements whereby blade actuation is synchronized to specific rotation positions of said one roll.

mentioned means is kept in synchronization with roll rotation.

Claims

1. A machine for the bagging of articles within bags formed from continuous partially folded bag stock comprising, a framework adapted to receive a continuous supply of bag stock, rolls jointly acting on opposite sides of the partially folded bag stock, said rolls including, cooperating head portions continuously sealing opposed longitudinal edges of the bag stock, cooperating lands on the rolls transversely sealing the bag stock at intervals therealong, blade means carried by one of said rolls and adapted for radial movement constituting a cutting stroke of the blade for transversely severing the bag stock along transversely sealed bag areas, blade actuating means carried by said one roll and operative at recurrent intervals to actuate said blade means during a cutting stroke, and bag loading means including a shoe acting at recurrent intervals on articles to be bagged to project same along a moving run of bag stock into proximity of the roll means for enclosure by the longitudinal and transverse seals, shoe actuating means operable in a forceful manner in recurring Cycles to move the shoe in a rectilinear path.

2. The machine claimed in claim 1 additionally including a deflector having an inclined surface acting on the projected articles.

3. The machine claimed in claim 1 wherein said blade means is slidably housed within one of said rolls, said blade actuating means carried by said one roll includes piston elements responsive to recurrent fluid pressure for radial blade extension.

7. In combination, rolls jointly acting on partially folded bag stock having a pressure sensitive inner surface, said rolls each including circular head portions in rolling contact with the bag stock forming a longitudinal seal therealong, depending roll portions of reduced section having circumferentially spaced lands thereon for contact with the bag stock at intervals to sequentially form transverse seals, bag loading means including a pneumatic cylinder and a shoe operable intermediate the sequential formation of said transverse seals of a bag to forcefully project a group of articles being bagged towards a formed transverse seal and, blade means within one of said rolls and adapted for radial movement constituting a cutting stroke of the blade for transversely severing the bag stock along the transverse seals, blade actuating means carried by said one roll and operative at recurrent intervals to actuate said blade means during a cutting stroke.

9. A machine for the bagging of worker selected articles within bags formed from continuous partially folded bag stock, said machine comprising, a framework adapted to receive a continuous supply of bag stock, a powered turntable on said framework for the reception of a varied assortment of articles for travel past workers located adjacent the machine, bag pre-loading means including a rotating receptacle having upwardly opening compartments therein for receiving worker selected articles and sequentially discharging same in compartmental groups to be separately bagged, bag loading means including a chute intermittently receiving said groups of articles from said rotating receptacle, a combination show and drop door in perpendicular relationship normally disposed within said chute, said drop door momentarily supporting a group of articles to be separately bagged, means in wiping contact with said drop door, pneumatic means intermittently actuating said shoe and drop door in a rectilinear manner to project the grouped articles along the moving bag stock, and rolls jointly acting on the bag stock and including circular heAd portions for continuously sealing opposed longitudinal edges of the partially folded stock, roll portions of reduced section having circumferentially spaced lands thereon for contact with the bag stock at intervals to form transverse seals, blade means within one of said rolls and having a radial cutting stroke for transversely severing the bag stock along the transverse seals, blade actuating means carried by said one roll and operative at recurrent intervals to actuate said blade means during a cutting stroke.

11. In a machine for the bagging of articles within bags formed from a continuous web of bag stock, said machine including cooperating rolls receiving a partially folded web of bag stock, therebetween, said rolls having circular head portions in opposed rolling contact with the bag stock and having roll portions of reduced section with circumferentially spaced lands thereon for contact with the bag stock at intervals to form transversely extending sealed areas on said web, means for advancing articles to be bagged along the partially folded web to the proximity of said rolls, the improvement comprising blade means disposed longitudinally along one of said rolls and adapted for radial movement through the transversely extending sealed areas during a cutting stroke for severing of the bag stock, blade actuating means including piston elements responsive to recurrent fluid pressure, a pair of roll carrying shafts, one of said shafts axially bored to provide an air passageway therealong in communication with laterally extending shaft bores, said one roll defining horizontally directed bores for said piston elements in communication with the bores in said bored shaft whereby pressurized air may be communicated to said horizontal bores for piston actuation.

13. The invention claimed in claim 12 including additional means actuated by said cam means, said additional means regulating a flow of pressurized air to said article advancing means whereby operation of the last mentioned means is kept in synchronization with roll rotation.