US3272047A - Hydraulic roll oscillating device - Google Patents

Hydraulic roll oscillating device Download PDF

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Publication number
US3272047A
US3272047A US324926A US32492663A US3272047A US 3272047 A US3272047 A US 3272047A US 324926 A US324926 A US 324926A US 32492663 A US32492663 A US 32492663A US 3272047 A US3272047 A US 3272047A
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roll
hydraulic
pair
rolls
switch means
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US324926A
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William F Ward
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Priority to US324926A priority Critical patent/US3272047A/en
Priority to GB8715/64A priority patent/GB1025123A/en
Priority to DEW37265A priority patent/DE1290798B/en
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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
    • B26D7/20—Cutting beds
    • 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
    • B26D1/14—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 circular cutting member, e.g. disc cutter
    • B26D1/24—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 circular cutting member, e.g. disc cutter coacting with another disc cutter
    • B26D1/245—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 circular cutting member, e.g. disc cutter coacting with another disc cutter for thin material, e.g. for sheets, strips or the like
    • 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
    • Y10T83/4812—Compound movement of tool during tool cycle
    • Y10T83/4815—Axial reciprocation of 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6592—Interrelated work-conveying and tool-moving means
    • Y10T83/6595—With means to move tool laterally of feed direction during cutting
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/7847—Tool element axially shiftable
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8745—Tool and anvil relatively positionable
    • Y10T83/8746—Straight line
    • 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
    • Y10T83/9309—Anvil
    • Y10T83/9312—Rotatable type

Definitions

  • This invention relates to improvements in apparatus for severing sheet material, and particularly such apparatus wherein severing is obtained by impressing a cutting blade against sheet material which is restrained by a resilient backing member.
  • a machine operating in this manner is a rotary die-cut machine.
  • the resilient backing member is a rotating roll having a resilient covering, such as of polyurethane
  • the cutting blade is a serrated blade mounted on another rotating roll and impressed against the surface of the resilient covering. While eflicien-t severing of sheet material, such as cardboard, is obtained, the repetitive impression of the cutting blade on the same line along the surface of the resilient covering results in the damage thereof and to thus require the expense of machine downtime and replacement of the resiliently covered roll.
  • a further object of the present invention is to provide an arrangement for a resilient backing member in which fresh portions thereof are brought into contact with the cutting blade.
  • a still further object of the present invention is to provide a mechanism for longitudinally shifting the resilient covered roll in relation to the cutting roll of a rotary diecut machine.
  • FIG. 1 is a side elevation of a rotary die-cut machine incorporating features of the present invention
  • FIG. 2 is an enlarged fragmentary view along line 2-2 of FIG. 1;
  • FIG. 3 is a schematic diagram of the electric and hydraulic circuitry shown in FIG. 1.
  • a rotary die-cut machine is generally designated as and it comprises a frame 12, of which one side only is depicted, and a pair of rolls 14 and 16 rotatably mounted within the frame.
  • Roll 16 is provided with a covering of resilient material and roll 14 is provided with a cutting blade 15 extending from its lateral surface and having its cutting edge impressed against the surface of the resilient covering of roll 16 for severing of sheet material passing between these rolls.
  • roll 16 is longitudinally oscillated or shifted with respect to the cutting blade 15 of roll 14 so as to present a fresh resilient surface thereto.
  • This oscillation is obtained by driving the journal shaft 18 of roll 16 in a like motion within journal housing 20 by electric and hydraulic means which will now be described.
  • An electric motor is provided with its driving shaft 22 having a pulley 24 mounted thereon and a driving belt 26 which, in turn, drives the hydraulic pump 30 by means of a pulley 28. Hydraulic fluid is supplied to a reversing valve 34 through a pump output line 32.
  • the reversing valve 34 is provided with a pair of solenoids 36 and 38 and a pair of hydraulic lines 40 and 42, with the direction of hydraulic fluid flow through these hydraulic lines 40 and 42 being reversible according to actuation of a slidable valve plug 35 by the solenoids 36 and 38.
  • the hydraulic lines 40 and 42 are connected to opposite ends of a double-acting hydraulic cylinder 44 which includes a piston 46 and a piston rod 48 extending from each end of the hydraulic cylinder 44.
  • the direction of movement of the piston 46 is determined by which of the hydraulic lines 40 and 42 is supplying hydraulic fluid under pressure to the hydraulic cylinder 44.
  • the remaining line of the hydraulic lines 40 and 42 is communicated by means of the reversing valve 34 with return hydraulic line 50 and sump 52 which, in turn, supplies hydraulic fluid to the pump 30 through a pump intake line 54.
  • the inner end of the piston rod 48 is connected directly to the adjacent end of the shaft 18 of roll 16 so as to translate the longitudinal motion of the piston 46 directly thereto. Reversal of the motion of piston 46 and thus oscillation of roll 16 is obtained by means of a striker plate 56 mounted at the opposite end of the piston rod 48 and a pair of switches 60 and 62 which are positioned upon mounting plate 58. Mounting plate 58, in turn, is mounted to the outer end of the hydraulic cylinder of the double-acting hydraulic cylinder 44.
  • the switches 60 and 62 are spaced for actuation by the striker plate 56 to determine the limits of its travel and thus the amplitude of oscillation, by means of the electrical connection of the switches 62 and 60 with the solenoids 36 and 38, respectively, of the reversing valve 34.
  • the longitudinal oscillation of roll 16 is done simultaneously with the passage of sheet material between the rolls 14 and 16.
  • a representative amplitude of oscillation, as determined by switches 60 and 62, is 5 per revolution of the cycle of the machine so that instead of the cutting blade 15 bearing continuously on a width of the resilient covering corresponding to the width of the cutting blade, the wear of the resilient covering is distributed across the entire amplitude of longitudinal shift.
  • a double-acting hydraulic cylinder having one end of its piston shaft connected to one end of the shaft of said one roll for longitudinally oscillating it with respect to said other roll, a source of hydraulic pressure, a pair of hydraulic lines for supplying hydraulic fluid to said hydraulic cylinder, a reversing valve for reversing the direction of hydraulic fluid flow through said hydraulic cylinder to obtain the longitudinal oscillation of said one roll, a pair of spaced switch means for defining the limits of said longitudinal oscillation, striker means mounted on the opposite end of said piston shaft for alternately actuating said spaced switch means, and solenoid means energized by said spaced switch means to reverse said reversing valve in response to the alternate actuation of said spaced switch means by said striker means.
  • said reversing valve includes a slidable valve plug, the sliding movement of which is actuated by said solenoid means.
  • said solenoid means consists of a solenoid spaced from each end of said slidable valve plug.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nonmetal Cutting Devices (AREA)

Description

Sept if), 1966 w. F. WARD 3,272,947
HYDRAULIC ROLL OSCILLATING DEVICE Filed Nov. 20, 1963 FIG. 2. I6
/32 WILL/AM E WARD INVENTOR ATTORNEY United States Patent 3 272 047 HYDRAULIC Ron. OS CILLATING DEVICE William F. Ward, 1706 Kurtz Ave., Lutherville Md. Filed Nov. 20, 1963, Ser. No. 324,926 3 Claims. (Cl. 83-338) This invention relates to improvements in apparatus for severing sheet material, and particularly such apparatus wherein severing is obtained by impressing a cutting blade against sheet material which is restrained by a resilient backing member.
A machine operating in this manner is a rotary die-cut machine. In this machine, the resilient backing member is a rotating roll having a resilient covering, such as of polyurethane, and the cutting blade is a serrated blade mounted on another rotating roll and impressed against the surface of the resilient covering. While eflicien-t severing of sheet material, such as cardboard, is obtained, the repetitive impression of the cutting blade on the same line along the surface of the resilient covering results in the damage thereof and to thus require the expense of machine downtime and replacement of the resiliently covered roll.
It is an object of the present invention, therefore, to provide a severing apparatus such as described but with a resilient backing member having extended life.
A further object of the present invention is to provide an arrangement for a resilient backing member in which fresh portions thereof are brought into contact with the cutting blade.
A still further object of the present invention is to provide a mechanism for longitudinally shifting the resilient covered roll in relation to the cutting roll of a rotary diecut machine.
These and other objects of the present invention will be come more readily apparent by reference to the following description and accompanying drawings in which:
FIG. 1 is a side elevation of a rotary die-cut machine incorporating features of the present invention;
FIG. 2 is an enlarged fragmentary view along line 2-2 of FIG. 1; and
FIG. 3 is a schematic diagram of the electric and hydraulic circuitry shown in FIG. 1.
Referring now to FIG. 1, a rotary die-cut machine is generally designated as and it comprises a frame 12, of which one side only is depicted, and a pair of rolls 14 and 16 rotatably mounted within the frame. Roll 16 is provided with a covering of resilient material and roll 14 is provided with a cutting blade 15 extending from its lateral surface and having its cutting edge impressed against the surface of the resilient covering of roll 16 for severing of sheet material passing between these rolls.
According to the present invention, roll 16 is longitudinally oscillated or shifted with respect to the cutting blade 15 of roll 14 so as to present a fresh resilient surface thereto. This oscillation is obtained by driving the journal shaft 18 of roll 16 in a like motion within journal housing 20 by electric and hydraulic means which will now be described.
An electric motor is provided with its driving shaft 22 having a pulley 24 mounted thereon and a driving belt 26 which, in turn, drives the hydraulic pump 30 by means of a pulley 28. Hydraulic fluid is supplied to a reversing valve 34 through a pump output line 32.
As shown in FIG. 3, the reversing valve 34 is provided with a pair of solenoids 36 and 38 and a pair of hydraulic lines 40 and 42, with the direction of hydraulic fluid flow through these hydraulic lines 40 and 42 being reversible according to actuation of a slidable valve plug 35 by the solenoids 36 and 38.
The hydraulic lines 40 and 42 are connected to opposite ends of a double-acting hydraulic cylinder 44 which includes a piston 46 and a piston rod 48 extending from each end of the hydraulic cylinder 44.
The direction of movement of the piston 46 is determined by which of the hydraulic lines 40 and 42 is supplying hydraulic fluid under pressure to the hydraulic cylinder 44. The remaining line of the hydraulic lines 40 and 42 is communicated by means of the reversing valve 34 with return hydraulic line 50 and sump 52 which, in turn, supplies hydraulic fluid to the pump 30 through a pump intake line 54.
The inner end of the piston rod 48 is connected directly to the adjacent end of the shaft 18 of roll 16 so as to translate the longitudinal motion of the piston 46 directly thereto. Reversal of the motion of piston 46 and thus oscillation of roll 16 is obtained by means of a striker plate 56 mounted at the opposite end of the piston rod 48 and a pair of switches 60 and 62 which are positioned upon mounting plate 58. Mounting plate 58, in turn, is mounted to the outer end of the hydraulic cylinder of the double-acting hydraulic cylinder 44.
The switches 60 and 62 are spaced for actuation by the striker plate 56 to determine the limits of its travel and thus the amplitude of oscillation, by means of the electrical connection of the switches 62 and 60 with the solenoids 36 and 38, respectively, of the reversing valve 34.
In operation, the longitudinal oscillation of roll 16 is done simultaneously with the passage of sheet material between the rolls 14 and 16. A representative amplitude of oscillation, as determined by switches 60 and 62, is 5 per revolution of the cycle of the machine so that instead of the cutting blade 15 bearing continuously on a width of the resilient covering corresponding to the width of the cutting blade, the wear of the resilient covering is distributed across the entire amplitude of longitudinal shift.
Obviously many modifications and variations of the present invention are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.
What is claimed is:
1. In a rotary die-cut machine for cutting of sheet material, a pair of rotatably mounted rolls, one of said rolls having a resilient covering and the other of said rolls having cutting means impressed against the surface of said resilient covering for severing of said sheet material when passed between said pair of rolls, a double-acting hydraulic cylinder having one end of its piston shaft connected to one end of the shaft of said one roll for longitudinally oscillating it with respect to said other roll, a source of hydraulic pressure, a pair of hydraulic lines for supplying hydraulic fluid to said hydraulic cylinder, a reversing valve for reversing the direction of hydraulic fluid flow through said hydraulic cylinder to obtain the longitudinal oscillation of said one roll, a pair of spaced switch means for defining the limits of said longitudinal oscillation, striker means mounted on the opposite end of said piston shaft for alternately actuating said spaced switch means, and solenoid means energized by said spaced switch means to reverse said reversing valve in response to the alternate actuation of said spaced switch means by said striker means.
2. In the rotary die-cut machine of claim 1 wherein said reversing valve includes a slidable valve plug, the sliding movement of which is actuated by said solenoid means.
3. In the rotary die-cut machine of claim 2 wherein said solenoid means consists of a solenoid spaced from each end of said slidable valve plug.
References Cited by the Examiner UNITED STATES PATENTS ANDREW R. JUHASZ, Primary Examiner.

Claims (1)

1. IN A ROTARY DIE-CUT MACHINE FOR CUTTING OF SHEET MATERIAL, A PAIR OF ROTATABLY MOUNTED ROLLS, ONE OF SAID ROLLS HAVING A RESILIENT COVERING AND THE OTHER OF SAID ROLLS HAVING CUTTING MEANS IMPRESSED AGAINST THE SURFACE OF SAID RESILIENT COVERING FOR SEVERING OF SAID SHEET MATERIAL WHEN PASSED BETWEEN SAID PAIR OF ROLLS, A DOUBLE-ACTING HYDRAULIC CYLINDER HAVING ONE END OF ITS PISTON SHAFT CONNECTED TO ONE END OF THE SHAFT OF SAID ONE ROLL FOR LONGITUDINALLY OSCILLATING IT WITH RESPECT TO SAID OTHER ROLL, A SOURCE OF HYDRAULIC PRESSURE, A PAIR OF HYDRAULIC LINES FOR SUPPLYING HYDRAULIC FLUID TO SAID HYDRAULIC CYLINDER, A REVERSING VALVE FOR REVERSING THE DIRECTION OF HYDRAULIC FLUID FLOW THROUGH SAID HYDRAULIC CYLINDER TO OBTAIN THE LONGITUDINAL OSCILLATION OF SAID ONE ROLL, A PAIR OF SPACED SWITCH MEANS FOR DEFINING THE LIMITS OF SAID LONGITUDINAL OSCILLATION STRIKER MEANS MOUNTED ON THE OPPOSITE END OF SAID PISTON SHAFT FOR ALTERNATELY ACTUATING SAID SPACED SWITCH MEANS, AND SOLENOID MEANS ENERGIZED BY SAID SPACED SWITCH MEANS TO REVERSE SAID REVERSING VALVE IN RESPONSE TO THE ALTERNATE ACTUATION OF SAID SPACED SWITCH MEANS BY SAID STRIKER MEANS.
US324926A 1963-11-20 1963-11-20 Hydraulic roll oscillating device Expired - Lifetime US3272047A (en)

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Application Number Priority Date Filing Date Title
US324926A US3272047A (en) 1963-11-20 1963-11-20 Hydraulic roll oscillating device
GB8715/64A GB1025123A (en) 1963-11-20 1964-03-02 Improvements relating to cutting machines
DEW37265A DE1290798B (en) 1963-11-20 1964-07-28 Cutting machine for sheet material such as paper

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340778A (en) * 1965-07-02 1967-09-12 Baker Harry L Apparatus for cutting, creasing, scoring, and the like
DE2363750A1 (en) * 1972-12-29 1974-07-04 Koppers Co Inc METHOD AND DEVICE FOR CONTROL AND REGULATING THE ACCURACY OF CUTS IN CUTS IN CARDBOARD
US3946629A (en) * 1974-07-01 1976-03-30 Windmoller & Holscher Apparatus for severing sections from a web of material
FR2445759A1 (en) * 1979-01-08 1980-08-01 Mitsubishi Heavy Ind Ltd ROTARY PUNCHING MACHINE, ESPECIALLY FOR CORRUGATED SHEET
DE2937664A1 (en) * 1979-05-15 1980-11-20 Ward Machinery Co METHOD AND DEVICE FOR EXTENDING THE LIFETIME OF AN ELASTIC COVERING OF A COUNTER ROLLER OF A ROTATING KNIFE ROLLER
DE3345911A1 (en) * 1983-09-09 1985-03-28 The Ward Machinery Co., Cockeysville, Md. RITZ SCREWING DEVICE
EP0247727A2 (en) * 1986-05-21 1987-12-02 The Ward Machinery Company Rotary die-cut apparatus and gearing arrangement therein
DE29700519U1 (en) * 1997-01-14 1998-05-14 Gizeh-Werk GmbH, 51702 Bergneustadt Device for cross-cutting a strand-like structure
CN106738533A (en) * 2016-11-28 2017-05-31 中材科技（酒泉）风电叶片有限公司 Wind electricity blade overlap cutter sweep

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400527A (en) * 1943-12-13 1946-05-21 Rock Hill Printing & Finishing Slitting machine
US2637395A (en) * 1949-09-17 1953-05-05 Muller Otto Rotary cutter with variable spacing means
US2728393A (en) * 1952-03-19 1955-12-27 Harold H Brooks Apparatus for trimming and slitting webs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735630A (en) * 1956-02-21 Ziebolz
US2403377A (en) * 1944-09-04 1946-07-02 Gaw O Hara Envelope Company Scoring roll
DE1008565B (en) * 1954-07-05 1957-05-16 Jagenberg Werke Ag Roll cutting machine for running webs of paper, cardboard or the like.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400527A (en) * 1943-12-13 1946-05-21 Rock Hill Printing & Finishing Slitting machine
US2637395A (en) * 1949-09-17 1953-05-05 Muller Otto Rotary cutter with variable spacing means
US2728393A (en) * 1952-03-19 1955-12-27 Harold H Brooks Apparatus for trimming and slitting webs

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340778A (en) * 1965-07-02 1967-09-12 Baker Harry L Apparatus for cutting, creasing, scoring, and the like
DE2363750A1 (en) * 1972-12-29 1974-07-04 Koppers Co Inc METHOD AND DEVICE FOR CONTROL AND REGULATING THE ACCURACY OF CUTS IN CUTS IN CARDBOARD
US3946629A (en) * 1974-07-01 1976-03-30 Windmoller & Holscher Apparatus for severing sections from a web of material
US4295843A (en) * 1979-01-08 1981-10-20 Mitsubishi Jukogyo Kabushiki Kaisha Rotary die cutter
FR2445759A1 (en) * 1979-01-08 1980-08-01 Mitsubishi Heavy Ind Ltd ROTARY PUNCHING MACHINE, ESPECIALLY FOR CORRUGATED SHEET
DE2937664A1 (en) * 1979-05-15 1980-11-20 Ward Machinery Co METHOD AND DEVICE FOR EXTENDING THE LIFETIME OF AN ELASTIC COVERING OF A COUNTER ROLLER OF A ROTATING KNIFE ROLLER
US4240312A (en) * 1979-05-15 1980-12-23 The Ward Machinery Company Apparatus for improving wear life of rotary die cutter anvil covers
DE3345911A1 (en) * 1983-09-09 1985-03-28 The Ward Machinery Co., Cockeysville, Md. RITZ SCREWING DEVICE
EP0247727A2 (en) * 1986-05-21 1987-12-02 The Ward Machinery Company Rotary die-cut apparatus and gearing arrangement therein
US4736660A (en) * 1986-05-21 1988-04-12 The Ward Machinery Company Rotary die-cut apparatus and gearing arrangement therein
EP0247727A3 (en) * 1986-05-21 1989-06-07 The Ward Machinery Company Rotary die-cut apparatus and gearing arrangement therein
DE29700519U1 (en) * 1997-01-14 1998-05-14 Gizeh-Werk GmbH, 51702 Bergneustadt Device for cross-cutting a strand-like structure
CN106738533A (en) * 2016-11-28 2017-05-31 中材科技（酒泉）风电叶片有限公司 Wind electricity blade overlap cutter sweep

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DE1290798B (en) 1969-03-13
GB1025123A (en) 1966-04-06

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