US3709077A - Cut-off device - Google Patents
Cut-off device Download PDFInfo
- Publication number
- US3709077A US3709077A US00119614A US3709077DA US3709077A US 3709077 A US3709077 A US 3709077A US 00119614 A US00119614 A US 00119614A US 3709077D A US3709077D A US 3709077DA US 3709077 A US3709077 A US 3709077A
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- US
- United States
- Prior art keywords
- knife
- roll
- fly
- anvil
- chamfered
- 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 - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/56—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
- B26D1/62—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
- B26D1/626—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
- B26D1/405—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member for thin material, e.g. for sheets, strips or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/018—Holding the work by suction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting blades
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- 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
- Y10T83/00—Cutting
- Y10T83/202—With product handling means
- Y10T83/2092—Means to move, guide, or permit free fall or flight of product
- Y10T83/2183—Product mover including gripper means
- Y10T83/2185—Suction gripper
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- 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
- Y10T83/00—Cutting
- Y10T83/465—Cutting motion of tool has component in direction of moving work
- Y10T83/4766—Orbital motion of cutting blade
- Y10T83/4795—Rotary tool
- Y10T83/4824—With means to cause progressive transverse cutting
- Y10T83/4827—With helical cutter blade
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- 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
- Y10T83/00—Cutting
- Y10T83/465—Cutting motion of tool has component in direction of moving work
- Y10T83/4766—Orbital motion of cutting blade
- Y10T83/4795—Rotary tool
- Y10T83/483—With cooperating rotary cutter or backup
- Y10T83/4836—With radial overlap of the cutting members
-
- 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
- Y10T83/00—Cutting
- Y10T83/929—Tool or tool with support
- Y10T83/9372—Rotatable type
- Y10T83/9394—Helical tool
-
- 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
- Y10T83/00—Cutting
- Y10T83/929—Tool or tool with support
- Y10T83/9372—Rotatable type
- Y10T83/9396—Shear type
- Y10T83/9399—Cutting edge wholly parallel to axis of rotation
-
- 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
- Y10T83/00—Cutting
- Y10T83/929—Tool or tool with support
- Y10T83/9457—Joint or connection
- Y10T83/9464—For rotary tool
- Y10T83/9469—Adjustable
Definitions
- ABSTRACT [51] int Cl A rotary shear or cut-off device for web fed materials [58] Field 345 A 674 673 such as paper napkin stock that includes a novel ad- 85/672 69 justing means, the device being capable of operating at high speeds without difficulties, and wherein all [56] References Cited four edges of the knife, such as the anvil knife, can be UNITED STATES PATENTS used, and wherein chamfered edges are utilized on the anvil knife and fly knife.
- An object of the present invention is to provide a rotary shear or cut-off device for web fed material such as paper napkin stock wherein the device or mechanism is relatively simple in construction and easy to adjust, and wherein the device is constructed so that it can run or operate at high speeds without any ill effects, and wherein in the system of the present invention the percent of over speed of the fly knife roll is not critical and this is advantageous because it permits the roll diameter of the fly knife roll to be increased in the event deflection becomes a problem due to a short cut off length.
- Another object of the present invention is to provide a cut-off device wherein all four edges of the anvil knife can be used, and wherein there is provided a novel gear arrangement for the cut-off system or rotary shear of the present invention.
- Still another object is to provide a cut-off system that is an improvement over such prior systems or devices as those shown in prior U.S. Pat. Nos. 2,478,240 and 3,247,746.
- Another object is to provide a cut-off system that is adapted to minimize errors productive of wasted labor and material in the formation thereof, and further objects and advantages are to provide improved elements and arrangements thereof in a device of the character described that is relatively economical to produce, durable in form, and conducive to the most economical use of materials and uniformity of members formed therefrom.
- FIG. I is an end view of the gearing device of the present invention.
- FIG. 2 is a sectional view taken on the line 2-2 of FIG. 1.
- FIG. 3 is a fragmentary sectional view taken through the fly knife roll and anvil knife roll at the beginning of a cut.
- FIG. 4 is a view generally similar to FIG. 3, but with the parts rotated towards the end ofa cut.
- FIG. 5 is an exploded perspective view of the fly roll and its associated parts.
- FIG. 6 is a side view of the fly knife.
- FIG. 7 is an exploded perspective view of the anvil knife and its clamping means.
- FIG. 8 is an end view of the anvil knife.
- the numeral indicates the rotary shear or cut-off device of the present invention, and the rotary shear is adapted to be used'for cutting paper napkin stock and the like which is held against the surface of the vacuum roll 21 by a vacuum means or the like.
- the vacuum means is actually a series of small holes (one-eighth inch to five thirty-seconds inch) through clean out plate 30A.
- the vacuum roll 21 holds an anvil knife 22.
- the numeral 23 indicates a single repeat roll that carriesa fly knife 24, and the numeral 25 indicates a fly knife or blade holder.
- a wedging or angle block 26 is provided adjacent the holder 25 and. the adjustment of these parts determines the angle of the fly knife 24 with the center line of the repeat roll 23.
- the fly knife 24 is adapted to be adjusted by fine threaded set screws or securing elements 43 and 44.
- the anvil blade 22 has chamfered edges 31 thereon, FIG. 8, and this chamfer 31 may have a suitable configuration such as 45 0.042 inches, and runs along the entire length on all four sides.
- the fly knife blade 24 has a chamfered corner 29, FIGS. 5 and 6, to help it get under the anvil blade 22.
- Four corners 31 of the anvil knife 22 are adapted to be chamfered across the entire cutting edge on all four sides for use on all four sides of the knife or device.
- the vacuum roll 21 and fly knife roll 23 are mounted on shafts l9 and 18, respectively, that rotate in bearings 32, and the bearings 32 may be supported by a suitable frame or supporting structure 33 of a desired configuration or formation.
- a split gear 36 that consists of gear members 34 and 35 that are mounted on the hub 37 for driving the fly knife roll gear 38 that is fixed to the roll journal by hub 39 through the medium of bolts 40.
- the bolts 40 may extend through slots 17.
- Pins 41 are pressed into the gear 38 and extend into the hub 39 through over-sized holes or openings. It will be noted that by loosening the bolts 40 and adjusting the set screws 42 on either side of the pins 41, a fine tune of the cutting edges can be obtained before the fly knife blade set screws-43 and 44 are utilized.
- the one half gear 35 is fixed to the hub 37 by bolts 45, and the gear 35 does the driving of the fly knife roll gear 38.
- the other half 34 of the vacuum roll gear is adjusted in a direction opposite to its rotation by loosening the bolts 46 and adjusting the set screws 47 on either side of pin 48 so as to remove all of the backlash between these gears, as later described in this application.
- anvil blade 22 is held in place by block 49 and clamped against the face of block 50 by slight loosening of the bolts 51 in block 49, and tightening of the bolts 52 in the wedging block 53 which slides the block 53 sideways down its tapered seat 54.
- a rotary shear or cut-off'device which is especially suitable for cutting paper napkin stock and the like, and in use with the parts arranged as shown in the drawings, power can be supplied from any suitable source of supply so as to rotate the pair of rolls 21 and 23 towards each other, as indicated by the arrows 55 and 56 in FIGS. 3 and 4.
- the paper napkin stock or other stock is held against the surface of the roll2l in any suitable manner. as for example, by means of a vacuum arrangement 30 which forms no part of the present invention.
- the present invention thus consists of the vacuum roll 21 that holds the anvil knife 22, and there is further provided the single repeat roll 23 which carries the fly knife 24.
- the fly knife 24 is held in place by means of a fly knife blade holder 25 that is maintained at its proper location by means of the wedging or angle block 26, and the position of these parts determines the angle of the fly knife 24 relative to the center line of the roll 23.
- the fly knife roll 23 is generally a single repeat roll, while the vacuum roll 21 may be used in repeats of two, three and four, as shown in dotted lines in FIG. 1, and no apparent ill effects are noticeable.
- the surface speed of the tip of the fly knife blade 24 may be used at from approximately 31% to 75% higher than the cutting edge of the anvil blade 22 with no shortcomings as to speed limitations,
- the larger percent of over speed can be used on small repeat sizes to get a larger fly knife roll body to eliminate roll deflection problems and the like.
- fly knife blade 24 is not being bowed or curved as is the case in prior U.S. Pat. No. 3,247,746.
- the fly knife blade 24 is adjusted by the fine threaded set screws 43 and 44 in generally a straight line until it acts with the anvil knife 22 and cuts the web.
- One of the main aspects or features of the present invention is the 45 X 0.042 inches chamfer 31 of the anvil blade 22, although it is to be understood that other configurations of the chamfer can be used on the anvil blade.
- fly knife blade 24 has a chamfered corner 29 on the leading edge to help it get under the anvil knife 22.
- This blade can be chamfered on all four corners for use on all four cutting edges. Further, the anvil knife 22 is also chamfered across the entire cutting edge on all four corners for use on all four corners.
- the anvil knife 22 may be made of a high speed tool steel of 66-68 Rockwell C", and the fly knife may be made from either a high speed steel or a Swedish high carbon spring steel. While both work equally well, the use of spring steel provides certain advantages from a point of view of cost.
- the vacuum roll 21 and the fly knife roll 23 rotates in bearings such as bearings 32.
- a split gear 36 that embodies or includes members 34 and 35 that are mounted on the hub 37, and this split gear arrangement drives the fly knife roll gear 38 which is fixed to the roll journal by hub 39 through bolts 40.
- Pins 41 are adapted to be pressed into the gear 38 and extend into the hub 39 through oversized holes.
- the one-half gear 35 is fixed to the hub 37 by bolts 45, and the gear 35 does the driving of the fly knife roll gear 38.
- the other half of the vacuum roll gear 34 is adjusted in a direction opposite to its rotation by loosening bolts 46 and adjusting the set screws 47 on either side of the pin 48, in order to remove all of the backlash between these gears.
- anvil blade 22 is held in place by the block 49 and is clamped against the face of the block 50 by slight loosening of the bolts 51 in the block 49 and tightening of the bolts 52 in the wedge block 53 which slides the block 53 sideways down its tapered seat 54.
- Bolts or screws 58 serve to connect the block 50 to the vacuum roll 21, as shown in FIGS. 3 and 4.
- the present invention will permit high speed operations to be carried out, and there is provided a rugged construction, and not only does the web cut-off device of the present invention give extremely long life but is easily adjustable. Maintenance is minimized, and the machine is engineered for high speed operation, and in addition, versatility is assured.
- the present invention there is a blade 24 with four cutting edges held in a channelshaped holder, spaced at an angle relative to the axis of the small roll by the wedging block 26, and final adjustment of this blade 24 is accomplished by using the set screws 43 and 44.
- the matching knife or anvil blade 22 also has four cutting edges 31 and has a 45 chamfer on each edge, which makes the blade easier to adjust.
- the present invention is relatively simple in construction and is very easy to adjust, and it is capable of operating at high speeds without any ill effects.
- a further advantage of the present invention is that the percent of over speed of the fly knife roll 23 is not critical. This is advantageous, because it permits the roll diameter of the fly knife roll 23 to be increased should deflection be a problem due to a short cut off length, and the like.
- the present invention has the advantage in that all four edges of the anvil knife 22 can be used. Due to the thickness and method of holding, this knife very seldom breaks, but it becomes dull after being used for a period of time.
- said last-named holding means comprises a block affixed to said vacuum roll, and a wedging block and clamping block for said anvil knife.
- gear means that comprises split gear members, hubs associated with said gear members, and securing elements and pins operatively associated with said gear means.
- gear means that comprises split gear members, one of said split gear members being adjustable in a direction opposite to its rotation by loosening securing elements and adjusting said screws in order to remove all backlash between these gears.
- a new article of manufacture, a web cut-off device for cutting paper napkin stock and the like comprising a vacuum roll and a fly knife roll, an anvil knife mounted in said vacuum roll, a fly knife mounted in said fly knife roll, a holder for said fly knife, a wedge block positioned adjacent said holder, adjustable set screws operatively connected to said fly knife roll and engaging said holder and wedge block, said knives having chamfered edges and corners, holding means for the anvil knife, said last-named holding means comprising blocks, one of which has a tapered seat, said web cut-off device further including gear means that embodies split gear members, securing elements and pins operatively connected to said gear means, said fly knife having a chamfered corner on the leading edge to help it get under the anvil knife, the anvil knife being chamfered across the entire cutting edge on all four corners for use on all four corners.
Abstract
A rotary shear or cut-off device for web fed materials such as paper napkin stock that includes a novel adjusting means, the device being capable of operating at high speeds without difficulties, and wherein all four edges of the knife, such as the anvil knife, can be used, and wherein chamfered edges are utilized on the anvil knife and fly knife.
Description
United States Patent Trogan et al. [451 Jan. 9, 1973 54 CUT-OFF DEVICE 2,723,604 11/1955 Fischer ..83/345 x [75] Inventors: John F. Trogan, Ashland; James H. Beebe, 0f [73] Assignee: C. G. Bretting Manufacturing Co., 312471746 4/1966 Inc. McGrath.. 3,302,503 2/1967 Hornung ..83/345 X [22] Filed: March 1, 1971 Primary Examiner-Frank T. Yost [2]] Appl ll9614 Att0rneySherman Levy [52] U.S. Cl. ..83/152, 83/342, 83/345, [57] ABSTRACT [51] int Cl A rotary shear or cut-off device for web fed materials [58] Field 345 A 674 673 such as paper napkin stock that includes a novel ad- 85/672 69 justing means, the device being capable of operating at high speeds without difficulties, and wherein all [56] References Cited four edges of the knife, such as the anvil knife, can be UNITED STATES PATENTS used, and wherein chamfered edges are utilized on the anvil knife and fly knife.
9 Claims, 8 Drawing Figures PATENTEDJAF! 9 I975 SHEET 1 [1F 2 INVENTORS \TO/IIV E 77206.4 F 11 M455 A 56586 BY ATTORNEY PATENTED JAN 9 I975 SHEET 2 OF 2 INVENTORS f m Z M hi CUT-OFF DEVICE The present invention relates to a cut-off device for web fed materials such as paper napkin stock.
An object of the present invention is to provide a rotary shear or cut-off device for web fed material such as paper napkin stock wherein the device or mechanism is relatively simple in construction and easy to adjust, and wherein the device is constructed so that it can run or operate at high speeds without any ill effects, and wherein in the system of the present invention the percent of over speed of the fly knife roll is not critical and this is advantageous because it permits the roll diameter of the fly knife roll to be increased in the event deflection becomes a problem due to a short cut off length.
Another object of the present invention is to provide a cut-off device wherein all four edges of the anvil knife can be used, and wherein there is provided a novel gear arrangement for the cut-off system or rotary shear of the present invention.
Still another object is to provide a cut-off system that is an improvement over such prior systems or devices as those shown in prior U.S. Pat. Nos. 2,478,240 and 3,247,746.
Another object is to provide a cut-off system that is adapted to minimize errors productive of wasted labor and material in the formation thereof, and further objects and advantages are to provide improved elements and arrangements thereof in a device of the character described that is relatively economical to produce, durable in form, and conducive to the most economical use of materials and uniformity of members formed therefrom.
Further objects and advantages will become apparent in the subsequent description in the specification.
In the drawings:
FIG. I is an end view of the gearing device of the present invention.
FIG. 2 is a sectional view taken on the line 2-2 of FIG. 1.
FIG. 3 is a fragmentary sectional view taken through the fly knife roll and anvil knife roll at the beginning of a cut.
FIG. 4 is a view generally similar to FIG. 3, but with the parts rotated towards the end ofa cut.
FIG. 5 is an exploded perspective view of the fly roll and its associated parts.
FIG. 6 is a side view of the fly knife.
FIG. 7 is an exploded perspective view of the anvil knife and its clamping means.
FIG. 8 is an end view of the anvil knife.
Referring in detail to the drawings, the numeral indicates the rotary shear or cut-off device of the present invention, and the rotary shear is adapted to be used'for cutting paper napkin stock and the like which is held against the surface of the vacuum roll 21 by a vacuum means or the like. The vacuum means is actually a series of small holes (one-eighth inch to five thirty-seconds inch) through clean out plate 30A.
As shown in the drawings, such as in FIG. 3, the vacuum roll 21 holds an anvil knife 22. The numeral 23 indicates a single repeat roll that carriesa fly knife 24, and the numeral 25 indicates a fly knife or blade holder. As shown in the drawings, a wedging or angle block 26 is provided adjacent the holder 25 and. the adjustment of these parts determines the angle of the fly knife 24 with the center line of the repeat roll 23. The fly knife 24 is adapted to be adjusted by fine threaded set screws or securing elements 43 and 44. The anvil blade 22 has chamfered edges 31 thereon, FIG. 8, and this chamfer 31 may have a suitable configuration such as 45 0.042 inches, and runs along the entire length on all four sides.
The fly knife blade 24 has a chamfered corner 29, FIGS. 5 and 6, to help it get under the anvil blade 22. Four corners 31 of the anvil knife 22 are adapted to be chamfered across the entire cutting edge on all four sides for use on all four sides of the knife or device.
As shown in the drawings, such as in FIG. 2, the vacuum roll 21 and fly knife roll 23 are mounted on shafts l9 and 18, respectively, that rotate in bearings 32, and the bearings 32 may be supported by a suitable frame or supporting structure 33 of a desired configuration or formation.
As shown in FIG. 2, there is provided a split gear 36 that consists of gear members 34 and 35 that are mounted on the hub 37 for driving the fly knife roll gear 38 that is fixed to the roll journal by hub 39 through the medium of bolts 40. The bolts 40 may extend through slots 17.
As shown in the drawings, the one half gear 35 is fixed to the hub 37 by bolts 45, and the gear 35 does the driving of the fly knife roll gear 38. The other half 34 of the vacuum roll gear is adjusted in a direction opposite to its rotation by loosening the bolts 46 and adjusting the set screws 47 on either side of pin 48 so as to remove all of the backlash between these gears, as later described in this application.
It will be noted that the anvil blade 22 is held in place by block 49 and clamped against the face of block 50 by slight loosening of the bolts 51 in block 49, and tightening of the bolts 52 in the wedging block 53 which slides the block 53 sideways down its tapered seat 54.
From the foregoing, itwill be seen that there has been provided a rotary shear or cut-off'device which is especially suitable for cutting paper napkin stock and the like, and in use with the parts arranged as shown in the drawings, power can be supplied from any suitable source of supply so as to rotate the pair of rolls 21 and 23 towards each other, as indicated by the arrows 55 and 56 in FIGS. 3 and 4. As is well known, the paper napkin stock or other stock is held against the surface of the roll2l in any suitable manner. as for example, by means of a vacuum arrangement 30 which forms no part of the present invention.
The present invention thus consists of the vacuum roll 21 that holds the anvil knife 22, and there is further provided the single repeat roll 23 which carries the fly knife 24. The fly knife 24 is held in place by means of a fly knife blade holder 25 that is maintained at its proper location by means of the wedging or angle block 26, and the position of these parts determines the angle of the fly knife 24 relative to the center line of the roll 23.
The fly knife roll 23 is generally a single repeat roll, while the vacuum roll 21 may be used in repeats of two, three and four, as shown in dotted lines in FIG. 1, and no apparent ill effects are noticeable. The surface speed of the tip of the fly knife blade 24 may be used at from approximately 31% to 75% higher than the cutting edge of the anvil blade 22 with no shortcomings as to speed limitations,
The larger percent of over speed can be used on small repeat sizes to get a larger fly knife roll body to eliminate roll deflection problems and the like.
With the present invention, the fly knife blade 24 is not being bowed or curved as is the case in prior U.S. Pat. No. 3,247,746. The fly knife blade 24 is adjusted by the fine threaded set screws 43 and 44 in generally a straight line until it acts with the anvil knife 22 and cuts the web. One of the main aspects or features of the present invention is the 45 X 0.042 inches chamfer 31 of the anvil blade 22, although it is to be understood that other configurations of the chamfer can be used on the anvil blade. Heretofore, before this chamfer 31 was added or utilized, a very poor fly knife blade life resulted. in addition, fly knife blade 24 has a chamfered corner 29 on the leading edge to help it get under the anvil knife 22. This blade can be chamfered on all four corners for use on all four cutting edges. Further, the anvil knife 22 is also chamfered across the entire cutting edge on all four corners for use on all four corners. The anvil knife 22 may be made of a high speed tool steel of 66-68 Rockwell C", and the fly knife may be made from either a high speed steel or a Swedish high carbon spring steel. While both work equally well, the use of spring steel provides certain advantages from a point of view of cost.
It is to be noted that the vacuum roll 21 and the fly knife roll 23 rotates in bearings such as bearings 32. There is provided a split gear 36 that embodies or includes members 34 and 35 that are mounted on the hub 37, and this split gear arrangement drives the fly knife roll gear 38 which is fixed to the roll journal by hub 39 through bolts 40. Pins 41 are adapted to be pressed into the gear 38 and extend into the hub 39 through oversized holes. By loosening the bolts 40 and adjusting the set screws 42 on either side of the pin 41, a fine tune or adjustment of the cutting edges can be accomplished or obtained before the fly knife blade set screws 43 and 44 are utilized.
in addition, the one-half gear 35 is fixed to the hub 37 by bolts 45, and the gear 35 does the driving of the fly knife roll gear 38. The other half of the vacuum roll gear 34 is adjusted in a direction opposite to its rotation by loosening bolts 46 and adjusting the set screws 47 on either side of the pin 48, in order to remove all of the backlash between these gears.
It will be noted that the anvil blade 22 is held in place by the block 49 and is clamped against the face of the block 50 by slight loosening of the bolts 51 in the block 49 and tightening of the bolts 52 in the wedge block 53 which slides the block 53 sideways down its tapered seat 54. Bolts or screws 58 serve to connect the block 50 to the vacuum roll 21, as shown in FIGS. 3 and 4.
It is to be understood that the parts can be made of any suitable material and in different shapes and sizes, as desired or required.
The present invention will permit high speed operations to be carried out, and there is provided a rugged construction, and not only does the web cut-off device of the present invention give extremely long life but is easily adjustable. Maintenance is minimized, and the machine is engineered for high speed operation, and in addition, versatility is assured.
With further reference to the present invention as compared to prior patents, such as prior U.S. Pat. No. 3,247,746, it is to be noted that the present invention does not include a slot equipped plug in a slot enlargement, nor does it include holder means mounted in plug slots. Also the present invention is different from or an improvement over the construction of prior U.S. Pat. No. 3,247,746, inasmuch as it does not include the end plugs, the plug and screw arrangement, and the helix formation.
It will be noted that in the present invention there is a blade 24 with four cutting edges held in a channelshaped holder, spaced at an angle relative to the axis of the small roll by the wedging block 26, and final adjustment of this blade 24 is accomplished by using the set screws 43 and 44. The matching knife or anvil blade 22 also has four cutting edges 31 and has a 45 chamfer on each edge, which makes the blade easier to adjust. Thus, the present invention is relatively simple in construction and is very easy to adjust, and it is capable of operating at high speeds without any ill effects.
A further advantage of the present invention is that the percent of over speed of the fly knife roll 23 is not critical. This is advantageous, because it permits the roll diameter of the fly knife roll 23 to be increased should deflection be a problem due to a short cut off length, and the like.
The present invention has the advantage in that all four edges of the anvil knife 22 can be used. Due to the thickness and method of holding, this knife very seldom breaks, but it becomes dull after being used for a period of time.
Although the invention has been herein shown and described in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the details disclosed herein but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices and apparatus.
1 claim:
1. in a web cut-off device for cutting paper napkin stock and the like, a vacuum roll and a fly knife roll, an anvil knife, and a fly knife mounted in said vacuum roll and fly knife roll. respectively, a holder for said fly knife, a wedge block positioned adjacent said holder, adjustable set screws operatively connected to said fly knife roll and engaging said holder and wedge block, said anvil knife having chamfered edges that run along its entire length on all four sides thereof, said fly knife having chamfered corners thereon, and holding means for the anvil knife.
2. The structure as defined in claim 1, wherein said last-named holding means comprises a block affixed to said vacuum roll, and a wedging block and clamping block for said anvil knife.
3. The structure as defined in claim 1, and further including gear means.
4. The structure as defined in claim 1, and further including gear means that comprises split gear members, hubs associated with said gear members, and securing elements and pins operatively associated with said gear means.
5. The structure as defined in claim 1, wherein the fly knife has a chamfered corner on the leading edge to help it get under the anvil knife.
6. The structure as defined in claim 1, wherein the fly knife is adapted to be chamfered on all four corners for use on all four cutting edges, and wherein the anvil knife is chamfered across the entire cutting edge on all four corners for use on all four corners.
7. The structure as defined in claim 1, and further including gear means that comprises split gear members, one of said split gear members being adjustable in a direction opposite to its rotation by loosening securing elements and adjusting said screws in order to remove all backlash between these gears.
8. The structure as defined in claim 1, wherein the holding means for the anvil knife includes a block affixed to the vacuum roll, and the wedging block thereon.
9. A new article of manufacture, a web cut-off device for cutting paper napkin stock and the like, comprising a vacuum roll and a fly knife roll, an anvil knife mounted in said vacuum roll, a fly knife mounted in said fly knife roll, a holder for said fly knife, a wedge block positioned adjacent said holder, adjustable set screws operatively connected to said fly knife roll and engaging said holder and wedge block, said knives having chamfered edges and corners, holding means for the anvil knife, said last-named holding means comprising blocks, one of which has a tapered seat, said web cut-off device further including gear means that embodies split gear members, securing elements and pins operatively connected to said gear means, said fly knife having a chamfered corner on the leading edge to help it get under the anvil knife, the anvil knife being chamfered across the entire cutting edge on all four corners for use on all four corners.
Claims (9)
1. In a web cut-off device for cutting paper napkin stock and the like, a vacuum roll and a fly knife roll, an anvil knife, and a fly knife mounted in said vacuum roll and fly knife roll, respectively, a holder for said fly knife, a wedge block positioned adjacent said holder, adjustable set screws operatively connected to said fly knife roll and engaging said holder and wedge block, said anvil knife having chamfered edges that run along its entire length on all four sides thereof, said fly knife having chamfered corners thereon, and holding means for the anvil knife.
2. The structure as defined in claim 1, wherein said last-named holding means comprises a block affixed to said vacuum roll, and a wedging block and clamping block for said anvil knife.
3. The structure as defined in claim 1, and further including gear means.
4. The structure as defined in claim 1, and further including gear means that comprises split gear members, hubs associated with said gear members, and securing elements and pins operatively associated with said gear means.
5. The structure as defined in claim 1, wherein the fly knife has a chamfered corner on the leading edge to help it get under the anvil knife.
6. The structure as defined in claim 1, wherein the fly knife is adapted to be chamfered on all four corners for use on all four cutting edges, and wherein the anvil knife is chamfered across the entire cutting edge on all four corners for use on all four corners.
7. The structure as defined in claim 1, and further including gear means that comprises split gear members, one of said split gear members being adjustable in a direction opposite to its rotation by loosening securing elements and adjusting said screws in order to remove all backlash between these gears.
8. The structure as defined in claim 1, wherein the holding means for the anvil knife includes a block affixed to the vacuum roll, and the wedging block thereon.
9. A new article of manufacture, a web cut-off device for cutting paper napkin stock and the like, comprising a vacuum roll and a fly knife roll, an anvil knife mounted in said vacuum roll, a fly knife mounted in said fly knife roll, a holder for said fly knife, a wedge block positioned adjacent said holder, adjustable set screws operatively connected to said fly knife roll and engaging said holder and wedge block, said knives having chamfered edges and corners, holding means for the anvil knife, said last-named holding means comprising blocks, one of which has a tapereD seat, said web cut-off device further including gear means that embodies split gear members, securing elements and pins operatively connected to said gear means, said fly knife having a chamfered corner on the leading edge to help it get under the anvil knife, the anvil knife being chamfered across the entire cutting edge on all four corners for use on all four corners.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11961471A | 1971-03-01 | 1971-03-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US00119614A Expired - Lifetime US3709077A (en) | 1971-03-01 | 1971-03-01 | Cut-off device |
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DE2639218A1 (en) * | 1975-09-23 | 1977-03-31 | Du Pont | CUTTING TOOL FOR A RUNNING STRIP |
US4141265A (en) * | 1976-03-31 | 1979-02-27 | G. D. Societa Per Azioni | Cleaning and lubricating foil cutter |
WO1980001259A1 (en) * | 1978-12-19 | 1980-06-26 | Graenges Aluminium Ab | Apparatus for dividing strip material |
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US4356745A (en) * | 1979-11-12 | 1982-11-02 | Dr. Otto C. Strecker Kg | Synchronous rotary cross cutter |
US4392402A (en) * | 1979-05-31 | 1983-07-12 | E.C.H. Will (Gmbh & Co.) | Apparatus for severing running paper webs or the like |
EP0095912A2 (en) * | 1982-06-01 | 1983-12-07 | Harris Graphics Corporation | Blade holding device |
US4444080A (en) * | 1981-01-09 | 1984-04-24 | Grapha-Holding Ag | Tool for making rows of perforations in paper webs or the like |
US4450740A (en) * | 1980-10-20 | 1984-05-29 | Westvaco Corporation | Rotary envelope cutting apparatus |
US4561928A (en) * | 1980-10-24 | 1985-12-31 | Malthouse Martin D | Labelling machine |
EP0200948A2 (en) * | 1985-04-11 | 1986-11-12 | Baldwin Technology Corporation | Rotary-type papercutting apparatus |
US4648299A (en) * | 1984-06-23 | 1987-03-10 | Maschinenfabrik Alfred Schmermund Gmbh & Co | Apparatus for cutting off a tear-open strip |
US4709607A (en) * | 1983-04-15 | 1987-12-01 | Buhayar Eric S | Rotary cutter blade clamp |
US4756219A (en) * | 1986-10-08 | 1988-07-12 | Peters Maschinenfabrik Gmbh | Cross-cutter |
US4778441A (en) * | 1987-06-16 | 1988-10-18 | C.G. Bretting Manufacturing Co., Inc. | Interfolding machinery improvement |
US4785697A (en) * | 1986-06-13 | 1988-11-22 | Sasib S.P.A. | Apparatus for dividing a continuous web of material into successive single sections |
US4823659A (en) * | 1986-11-03 | 1989-04-25 | Rofalex International Inc. | Holder for a panel cutting plate |
US4872382A (en) * | 1988-04-18 | 1989-10-10 | R. A. Jones & Co. Inc. | Apparatus for adjusting knives for a pouch form, fill, seal machine |
US4917665A (en) * | 1987-06-16 | 1990-04-17 | C. G. Bretting Manufacturing Co. Inc. | Bedroll interfolding machinery improvement |
USRE33613E (en) * | 1985-12-20 | 1991-06-18 | Rotary apparatus | |
US5040397A (en) * | 1985-12-20 | 1991-08-20 | Bodnar Ernest R | Rotary apparatus and method |
US5367936A (en) * | 1992-03-06 | 1994-11-29 | Albert-Frankenthal Aktiengesellschaft | Adjustable cutting knife cylinder |
US5609084A (en) * | 1992-05-18 | 1997-03-11 | Gronbjerg; Ib | Machine for cutting a paper web into sheets with simultaneous cutting of a transverse strip |
US5740714A (en) * | 1994-10-25 | 1998-04-21 | Martin; Mark S. | Rotary blade clamping assembly |
US5775194A (en) * | 1995-02-09 | 1998-07-07 | Sasib S.P.A. | Device for making cuts in the direction of the advance of pieces of thin material |
WO2000003827A1 (en) * | 1998-07-20 | 2000-01-27 | C.G. Bretting Manufacturing Company, Inc. | Blade mounting arrangement for cut-off system |
US6032565A (en) * | 1994-05-17 | 2000-03-07 | Best Cutting Die Company | Multi-use rotary die plate system |
US6058818A (en) * | 1994-11-14 | 2000-05-09 | R.A. Jones & Co. Inc. | Convertible pitch knife apparatus |
US6076444A (en) * | 1997-08-01 | 2000-06-20 | Best Cutting Die Company | Panel cutting apparatus with selectable matrices for vacuum and air |
US6090467A (en) * | 1993-10-12 | 2000-07-18 | Kimberly-Clark Australia Pty Limited | Method and apparatus to manufacture a towel or tissue stack |
WO2000071332A2 (en) * | 1999-05-24 | 2000-11-30 | C.G. Bretting Manufacturing Company, Inc. | Web retention apparatus and method for cutoff blade |
US6155151A (en) * | 1997-06-25 | 2000-12-05 | Jagenberg Papiertechnik Gmbh | Cutter drum for web-cutting machine |
US6213346B1 (en) | 1998-06-29 | 2001-04-10 | Kimberly-Clark Worldwide, Inc. | Interfolded dispenser napkins |
US6263775B1 (en) * | 1998-02-20 | 2001-07-24 | E.C.H. Will Gmbh | Rotary knife carrier for use in cross cutters |
US6306480B1 (en) | 1998-03-27 | 2001-10-23 | Fort James Corporation | Single-ply dispenser napkin |
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US6532854B2 (en) | 1994-01-21 | 2003-03-18 | Best Cutting Die Company | Cutting die clamping mechanism |
US6539829B1 (en) | 1999-06-03 | 2003-04-01 | C. G. Bretting Manufacturing Company, Inc. | Rotary valve assembly and method |
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US20050166733A1 (en) * | 2004-01-29 | 2005-08-04 | Piscitello Marc C. | Rotary web cutting system with resilient mounting assembly for shaped knife blades |
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US20060118993A1 (en) * | 2004-12-03 | 2006-06-08 | Fort James Corporation | Embossing system and product made thereby with both perforate bosses in the cross machine direction and a macro pattern |
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Cited By (81)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3779123A (en) * | 1972-10-16 | 1973-12-18 | Cumberland Eng Co | Knife holder and knife therefor |
US3822625A (en) * | 1973-02-09 | 1974-07-09 | Westvaco Corp | Rotary cutter with quick change knife |
US3828636A (en) * | 1973-03-21 | 1974-08-13 | Pratt Mfg Corp | Rotary cutting apparatus |
US3935774A (en) * | 1973-06-22 | 1976-02-03 | Masson Scott Thrissell Engineering Limited | Mounting devices for a blade of a rotary cutting machine |
US4004479A (en) * | 1975-02-05 | 1977-01-25 | Bodnar Ernest R | Scrap chopper |
DE2639218A1 (en) * | 1975-09-23 | 1977-03-31 | Du Pont | CUTTING TOOL FOR A RUNNING STRIP |
US4141265A (en) * | 1976-03-31 | 1979-02-27 | G. D. Societa Per Azioni | Cleaning and lubricating foil cutter |
WO1980001259A1 (en) * | 1978-12-19 | 1980-06-26 | Graenges Aluminium Ab | Apparatus for dividing strip material |
US4347959A (en) * | 1978-12-19 | 1982-09-07 | Granges Aluminium Ab | Apparatus for dividing strip material |
US4392402A (en) * | 1979-05-31 | 1983-07-12 | E.C.H. Will (Gmbh & Co.) | Apparatus for severing running paper webs or the like |
US4275629A (en) * | 1979-07-25 | 1981-06-30 | Ball Corporation | Separator-cutter |
US4356745A (en) * | 1979-11-12 | 1982-11-02 | Dr. Otto C. Strecker Kg | Synchronous rotary cross cutter |
JPS5727697A (en) * | 1980-07-23 | 1982-02-15 | Toshiba Machine Co Ltd | Improvement of sheet cutter |
JPS5847319B2 (en) * | 1980-07-23 | 1983-10-21 | 東芝機械株式会社 | Improvement of seat cutter |
US4450740A (en) * | 1980-10-20 | 1984-05-29 | Westvaco Corporation | Rotary envelope cutting apparatus |
US4561928A (en) * | 1980-10-24 | 1985-12-31 | Malthouse Martin D | Labelling machine |
US4444080A (en) * | 1981-01-09 | 1984-04-24 | Grapha-Holding Ag | Tool for making rows of perforations in paper webs or the like |
JPS57108826U (en) * | 1981-03-13 | 1982-07-05 | ||
EP0095912A3 (en) * | 1982-06-01 | 1984-02-22 | Harris Graphics Corporation | Blade holding device |
EP0095912A2 (en) * | 1982-06-01 | 1983-12-07 | Harris Graphics Corporation | Blade holding device |
US4709607A (en) * | 1983-04-15 | 1987-12-01 | Buhayar Eric S | Rotary cutter blade clamp |
US4648299A (en) * | 1984-06-23 | 1987-03-10 | Maschinenfabrik Alfred Schmermund Gmbh & Co | Apparatus for cutting off a tear-open strip |
EP0200948A2 (en) * | 1985-04-11 | 1986-11-12 | Baldwin Technology Corporation | Rotary-type papercutting apparatus |
EP0200948A3 (en) * | 1985-04-11 | 1989-01-11 | Baldwin Technology Corporation | Rotary-type papercutting apparatus |
USRE33613E (en) * | 1985-12-20 | 1991-06-18 | Rotary apparatus | |
US5040397A (en) * | 1985-12-20 | 1991-08-20 | Bodnar Ernest R | Rotary apparatus and method |
US4785697A (en) * | 1986-06-13 | 1988-11-22 | Sasib S.P.A. | Apparatus for dividing a continuous web of material into successive single sections |
US4756219A (en) * | 1986-10-08 | 1988-07-12 | Peters Maschinenfabrik Gmbh | Cross-cutter |
US4823659A (en) * | 1986-11-03 | 1989-04-25 | Rofalex International Inc. | Holder for a panel cutting plate |
US4917665A (en) * | 1987-06-16 | 1990-04-17 | C. G. Bretting Manufacturing Co. Inc. | Bedroll interfolding machinery improvement |
US4778441A (en) * | 1987-06-16 | 1988-10-18 | C.G. Bretting Manufacturing Co., Inc. | Interfolding machinery improvement |
US4872382A (en) * | 1988-04-18 | 1989-10-10 | R. A. Jones & Co. Inc. | Apparatus for adjusting knives for a pouch form, fill, seal machine |
US5367936A (en) * | 1992-03-06 | 1994-11-29 | Albert-Frankenthal Aktiengesellschaft | Adjustable cutting knife cylinder |
US5609084A (en) * | 1992-05-18 | 1997-03-11 | Gronbjerg; Ib | Machine for cutting a paper web into sheets with simultaneous cutting of a transverse strip |
US6090467A (en) * | 1993-10-12 | 2000-07-18 | Kimberly-Clark Australia Pty Limited | Method and apparatus to manufacture a towel or tissue stack |
US6532854B2 (en) | 1994-01-21 | 2003-03-18 | Best Cutting Die Company | Cutting die clamping mechanism |
US6032565A (en) * | 1994-05-17 | 2000-03-07 | Best Cutting Die Company | Multi-use rotary die plate system |
US5740714A (en) * | 1994-10-25 | 1998-04-21 | Martin; Mark S. | Rotary blade clamping assembly |
US6058818A (en) * | 1994-11-14 | 2000-05-09 | R.A. Jones & Co. Inc. | Convertible pitch knife apparatus |
US5775194A (en) * | 1995-02-09 | 1998-07-07 | Sasib S.P.A. | Device for making cuts in the direction of the advance of pieces of thin material |
US6155151A (en) * | 1997-06-25 | 2000-12-05 | Jagenberg Papiertechnik Gmbh | Cutter drum for web-cutting machine |
ES2164500A1 (en) * | 1997-06-25 | 2002-02-16 | Jagenberg Papiertecchnik Gmbh | Cutter drum for web-cutting machine |
US6076444A (en) * | 1997-08-01 | 2000-06-20 | Best Cutting Die Company | Panel cutting apparatus with selectable matrices for vacuum and air |
US6263775B1 (en) * | 1998-02-20 | 2001-07-24 | E.C.H. Will Gmbh | Rotary knife carrier for use in cross cutters |
AU743328B2 (en) * | 1998-02-20 | 2002-01-24 | E.C.H. Will Gmbh | Knife drum for machines for the cross cutting of material webs |
US20050061827A1 (en) * | 1998-03-27 | 2005-03-24 | Yardley Craig D. | Single-ply dispenser napkin |
US6306480B1 (en) | 1998-03-27 | 2001-10-23 | Fort James Corporation | Single-ply dispenser napkin |
US7625333B2 (en) | 1998-03-27 | 2009-12-01 | Georiga-Pacific Consumer Products LP | Single-ply dispenser napkin |
US6213346B1 (en) | 1998-06-29 | 2001-04-10 | Kimberly-Clark Worldwide, Inc. | Interfolded dispenser napkins |
US6138543A (en) * | 1998-07-20 | 2000-10-31 | C. G. Bretting Manufacturing Company, Inc. | Blade mounting arrangement for cut-off system |
WO2000003827A1 (en) * | 1998-07-20 | 2000-01-27 | C.G. Bretting Manufacturing Company, Inc. | Blade mounting arrangement for cut-off system |
US6684745B2 (en) * | 1999-04-08 | 2004-02-03 | Morgan Construction Company | High speed flying shear |
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