US3709077A - Cut-off device - Google Patents

Cut-off device Download PDF

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US3709077A
US3709077A US3709077DA US3709077A US 3709077 A US3709077 A US 3709077A US 3709077D A US3709077D A US 3709077DA US 3709077 A US3709077 A US 3709077A
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Prior art keywords
knife
roll
fly
anvil
chamfered
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J Trogan
J Beebe
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CG Bretting Manufacturing Co Inc
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CG Bretting Manufacturing Co Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting 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
    • B26D1/56Cutting 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
    • B26D1/62Cutting 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
    • B26D1/626Cutting 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting 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
    • B26D1/0006Cutting members therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01Means for holding or positioning work
    • B26D7/018Holding the work by suction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614Means for mounting the cutting member
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting 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
    • B26D1/0006Cutting members therefor
    • B26D2001/0053Cutting members therefor having a special cutting edge section or blade section
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting 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
    • B26D1/0006Cutting members therefor
    • B26D2001/0066Cutting members therefor having shearing means, e.g. shearing blades, abutting blades
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/202With product handling means
    • Y10T83/2092Means to move, guide, or permit free fall or flight of product
    • Y10T83/2183Product mover including gripper means
    • Y10T83/2185Suction gripper
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4766Orbital motion of cutting blade
    • Y10T83/4795Rotary tool
    • Y10T83/4824With means to cause progressive transverse cutting
    • Y10T83/4827With helical cutter blade
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4766Orbital motion of cutting blade
    • Y10T83/4795Rotary tool
    • Y10T83/483With cooperating rotary cutter or backup
    • Y10T83/4836With radial overlap of the cutting members
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/929Tool or tool with support
    • Y10T83/9372Rotatable type
    • Y10T83/9394Helical tool
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/929Tool or tool with support
    • Y10T83/9372Rotatable type
    • Y10T83/9396Shear type
    • Y10T83/9399Cutting edge wholly parallel to axis of rotation
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/929Tool or tool with support
    • Y10T83/9457Joint or connection
    • Y10T83/9464For rotary tool
    • Y10T83/9469Adjustable

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.

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.

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.
US3709077D 1971-03-01 1971-03-01 Cut-off device Expired - Lifetime US3709077A (en)

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Cited By (60)

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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 stripes cutting tool for a running
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
US4275629A (en) * 1979-07-25 1981-06-30 Ball Corporation Separator-cutter
JPS5727697A (en) * 1980-07-23 1982-02-15 Toshiba Machine Co Ltd Improvement of sheet cutter
JPS57108826U (en) * 1981-03-13 1982-07-05
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
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US5367936A (en) * 1992-03-06 1994-11-29 Albert-Frankenthal Aktiengesellschaft Adjustable cutting knife cylinder
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US20060122574A1 (en) * 2004-12-03 2006-06-08 Fort James Corporation Multi-panel dispenser napkin
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
US20070056452A1 (en) * 2005-08-26 2007-03-15 Mario Lisena Material transfer vacuum device
US20090239728A1 (en) * 2006-05-16 2009-09-24 Omet S.R.L. Device for the Folding of Flexible Material
US20100055391A1 (en) * 2008-08-28 2010-03-04 Georgia-Pacific Consumer Products Lp Folded sheet material and array of folded sheet materials
US20100147126A1 (en) * 2008-12-12 2010-06-17 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Rotary die cutter
CN102514028A (en) * 2011-12-08 2012-06-27 深圳市鑫联达包装机械有限公司 Device for high-speed cutting
CN102644192A (en) * 2011-02-18 2012-08-22 好使有限责任公司和两合公司 Method for assembling a blade to a cylinder body, blade, cylinder body and cutting device
US10449746B2 (en) 2016-06-27 2019-10-22 C. G. Bretting Manufacturing Co., Inc. Web processing system with multiple folding arrangements fed by a single web handling arrangement

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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
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US4004479A (en) * 1975-02-05 1977-01-25 Bodnar Ernest R Scrap chopper
DE2639218A1 (en) * 1975-09-23 1977-03-31 Du Pont stripes cutting tool for a running
US4141265A (en) * 1976-03-31 1979-02-27 G. D. Societa Per Azioni Cleaning and lubricating foil cutter
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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
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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
JPH05162903A (en) * 1991-12-14 1993-06-29 Kawanoe Zoki Kk Web cutting device in web take-up device
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 Poratacuchillas drum for machines for continuous transversely cutting strips of material.
US6076444A (en) * 1997-08-01 2000-06-20 Best Cutting Die Company Panel cutting apparatus with selectable matrices for vacuum and air
AU743328B2 (en) * 1998-02-20 2002-01-24 E.C.H. Will Gmbh Knife drum for machines for the cross cutting of material webs
US6263775B1 (en) * 1998-02-20 2001-07-24 E.C.H. Will Gmbh Rotary knife carrier for use in cross cutters
US7625333B2 (en) 1998-03-27 2009-12-01 Georiga-Pacific Consumer Products LP Single-ply dispenser napkin
US6306480B1 (en) 1998-03-27 2001-10-23 Fort James Corporation Single-ply dispenser napkin
US20050061827A1 (en) * 1998-03-27 2005-03-24 Yardley Craig D. Single-ply dispenser napkin
US6213346B1 (en) 1998-06-29 2001-04-10 Kimberly-Clark Worldwide, Inc. Interfolded dispenser napkins
WO2000003827A1 (en) * 1998-07-20 2000-01-27 C.G. Bretting Manufacturing Company, Inc. Blade mounting arrangement for cut-off system
US6138543A (en) * 1998-07-20 2000-10-31 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
WO2000071332A2 (en) * 1999-05-24 2000-11-30 C.G. Bretting Manufacturing Company, Inc. Web retention apparatus and method for cutoff blade
WO2000071332A3 (en) * 1999-05-24 2001-12-06 Bretting C G Mfg Co Inc Web retention apparatus and method for cutoff blade
US6539829B1 (en) 1999-06-03 2003-04-01 C. G. Bretting Manufacturing Company, Inc. Rotary valve assembly and method
US20030045415A1 (en) * 1999-07-13 2003-03-06 C.G. Bretting Manufacturing Company, Inc. Vacuum assisted roll apparatus and method
US6488194B1 (en) 2000-08-30 2002-12-03 C.G. Bretting Manufacturing Company, Inc. Vacuum timing device and method for producing the same
US6805316B2 (en) 2001-10-23 2004-10-19 Kimberly-Clark Worldwide, Inc. Apparatus for severing, carrying or winding a web
US20060154795A1 (en) * 2002-09-27 2006-07-13 C.G. Bretting Manufacturing Company, Inc. Sheet folding apparatus and method
US20040063559A1 (en) * 2002-09-27 2004-04-01 Ochsenbauer Edward R. Sheet folding apparatus and method
US7758486B2 (en) 2002-09-27 2010-07-20 C.G. Bretting Manufacturing Company Sheet folding apparatus and method
US7008364B2 (en) 2002-09-27 2006-03-07 C.G. Bretting Manufacturing Company, Inc. Sheet folding apparatus and method
US20050166733A1 (en) * 2004-01-29 2005-08-04 Piscitello Marc C. Rotary web cutting system with resilient mounting assembly for shaped knife blades
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
US8178025B2 (en) 2004-12-03 2012-05-15 Georgia-Pacific Consumer Products Lp Embossing system and product made thereby with both perforate bosses in the cross machine direction and a macro pattern
US20080113855A1 (en) * 2004-12-03 2008-05-15 Georgia-Pacific Consumer Products Lp Multi-Panel Dispenser Napkin
US8647105B2 (en) 2004-12-03 2014-02-11 Georgia-Pacific Consumer Products Lp Embossing system and product made thereby with both perforate bosses in the cross machine direction and a macro pattern
US20060122574A1 (en) * 2004-12-03 2006-06-08 Fort James Corporation Multi-panel dispenser napkin
US7552919B2 (en) 2005-08-26 2009-06-30 Halm Industries Co., Inc. Material transfer vacuum device
US20070056452A1 (en) * 2005-08-26 2007-03-15 Mario Lisena Material transfer vacuum device
US20090239728A1 (en) * 2006-05-16 2009-09-24 Omet S.R.L. Device for the Folding of Flexible Material
US9102498B2 (en) * 2006-05-16 2015-08-11 Omet S.R.L. Device for the folding of flexible material
US8133569B2 (en) 2008-08-28 2012-03-13 Georgia-Pacific Consumer Products Lp Folded sheet material and array of folded sheet materials
US20100055391A1 (en) * 2008-08-28 2010-03-04 Georgia-Pacific Consumer Products Lp Folded sheet material and array of folded sheet materials
US20100147126A1 (en) * 2008-12-12 2010-06-17 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Rotary die cutter
CN102644192A (en) * 2011-02-18 2012-08-22 好使有限责任公司和两合公司 Method for assembling a blade to a cylinder body, blade, cylinder body and cutting device
EP2489484A1 (en) * 2011-02-18 2012-08-22 Heusch GmbH & Co. KG Method for assembling a blade to a cylinder body, blade, cylinder body and cutting device
CN102514028A (en) * 2011-12-08 2012-06-27 深圳市鑫联达包装机械有限公司 Device for high-speed cutting
US10449746B2 (en) 2016-06-27 2019-10-22 C. G. Bretting Manufacturing Co., Inc. Web processing system with multiple folding arrangements fed by a single web handling arrangement

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