US3786731A - Press for cutting sheet material - Google Patents

Press for cutting sheet material Download PDF

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Publication number
US3786731A
US3786731A US3786731DA US3786731A US 3786731 A US3786731 A US 3786731A US 3786731D A US3786731D A US 3786731DA US 3786731 A US3786731 A US 3786731A
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US
United States
Prior art keywords
press
carriage
cradle
stripping
frame
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
Application number
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English (en)
Inventor
J Bobst
W Gruetter
E Bollinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bobst Mex SA
Original Assignee
J Bobst et Fils SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by J Bobst et Fils SA filed Critical J Bobst et Fils SA
Application granted granted Critical
Publication of US3786731A publication Critical patent/US3786731A/en
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Expired - Lifetime legal-status Critical Current

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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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D2007/1872—Means for removing cut-out material or waste using breakaway pins
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D2007/1881—Means for removing cut-out material or waste using countertools
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D2007/189—Mounting blanking, stripping and break-out tools
    • 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
    • Y10T83/8748—Tool displaceable to inactive position [e.g., for work loading]
    • Y10T83/8749—By pivotal motion
    • 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
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9483—Adjustable
    • Y10T83/9486—Rectilinearly

Definitions

  • ABSTRACT A press for cutting sheet material includes a waste stripping section and is provided with waste ejecting elements supported by two frames which, in turn, are slideably receivable within two relatively moveable carriages whereby the frames can be slideably withdrawn from the carriages in order to permit adjustments of the stripping tools.
  • the present invention pertains to a press for cutting sheet material such as paper, cardboard, corrugated cardboard, and the like, and is particularly directed to a press which includes a stripping station wherein previously cut portions of a sheet of material are stripped" from the remainder of the sheet to effect waste removal in a fast and efficient manner.
  • stripping sections of such presses are commonly arranged with mating pairs of stripping tools carried in two relatively moveable frames which are positioned parallel to the path of movement of the sheet stock through the machine and which are moveable toward and away from such stock.
  • the upper and lower frames which carry the mating stripping tools are each carried in carriages which, in turn, are adapted to move vertically relative to the path of movement of sheet stock positioned therebetween.
  • the frames carrying the stripping elements can be slideably removed from the carriages so as to extend outwardly from the side of the press.
  • the operator is then free to position the new job design directly over the stripping elements without having to lean into the machine and can then precisely and accurately adjust the stripping elements relative to the waste portions in the sheet and relative to one another without having to do so by making careful measurements.
  • the frames carrying the stripping elements are then slid back into their respective carriages and means are provided for locking the frames within those carriages.
  • the press is again activated the carriages will move relative to one another with the frames being fixedly mounted therein and the stripping elements will then engage the waste portions and effect the stripping operation.
  • Another and more specific object of the invention resides in the design of a press wherein two generally horizontally extending cradles carry two generally horizontally extending carriages which, in turn, carry horizontal frames which in turn carry stripping tools and wherein the frames are horizontally slideably mounted within the respective carriages and wherein the upper of the two mating carriages is pivotally mounted in its respective cradle.
  • FIG. 1 is a perspective view of the stripping station of a press for cutting sheet material showing the frames carrying their respective stripping tools partially withdrawn from the side of the press;
  • FIG. 2 is a side elevational view of the relevant portions of the stripping station of such a press showing some parts in vertical section and others in side elevation;
  • FIG. 3 is an end view of the stripping station shown in FIG. 2 and also showing some parts in vertical section and others in side elevation;
  • FIG. 4 is a fragmentary plan view of the outer edge of the lower frame and its associated parts
  • FIG. 5 is a fragmentary side elevation view of the frame locking mechanism
  • FIG. 6 is a fragmentary sectional view of the frame locking mechanism illustrated in FIG. 5.
  • a press for cutting sheet material generally includes a feed station, a cutting and creasing station, a stripping station, and a delivery station. Sheets of material to be worked are fed from the feed station to the cutting and creasing station wherein portions of the sheet stock are both cut and creased and the sheet material is then fed to the stripping station where the waste material which has been cut from the sheet stock in the previous station is removed and thereafter the cut and stripped sheet material is directed to the delivery station.
  • FIG. 1 illustrates only the stripping station of such a press and it should be understood that the view shows primarily the side of such a press and that as viewed in FIG. 1 the feed and cutting stations would be toward the right and the delivery station would be toward the left.
  • the portion of the press shown in FIG. 1 comprises a housing 1 having a board 20 mounted therein (as shown in broken lines) which board is designed to support the sheet material fed to the stripping station.
  • Upper and lower frames 3 and 4 serve to support mating pairs of upper and lower stripping tools 5 and 6.
  • the board 20 is normally apertured so as to permit the lower stripping tools 6 to extend upwardly through the board and into engagement with such sheet material as is carried on the board.
  • the upper and lower stripping tools move into engagement with a portion of the sheet to be stripped and sandwich such waste portion of the sheet between themselves and thereafter the stripping tools and the waste portion of the sheet are caused to move together relative to the plane of the sheet so as to positively effect the stripping operation.
  • the stripping tools, 5, 6 are caused to move periodically toward and away from the sheet material carried on the board 20 by reciprocation of the frames 3, 4 in a manner which will be more completely understood by reference to the remaining figures and the description given in connection therewith.
  • the housing 1 has a horizontally disposed cradle 7 mounted for vertical reciprocable movement within the stripping station.
  • Connecting links 10 and 11 serve to pivotally interconnect the opposite ends of the cradle 7 with arms 12 and 13 which in turn are pivotally mounted on the housing about the axes 14 and 15.
  • Arms 12 and 13 may be formed integrally with drive arms 16 and 17 and these arms, in turn, are interconnected by the link 18 so as to rotate together and thereby cause the cradle 7 to move up and down.
  • the member 13, 17 has still another arm 19 extending therefrom which arm is connected to a reciprocably moveable drive member which need not be described herein in detail but which effects the drive for the reciprocably moveable cradle 7.
  • a board 20 is mounted within the housing at the points 21 and is adapted to support a succession of sheets to be stripped.
  • the board 20 may be apertured at suitable locations so as to permit the stripping tools supported by the lower cradle to extend up through the board and engage the sheet supported on the upper surface of the board.
  • An upper cradle 22 is positioned above the board 20 in spaced relation therefrom and it too is carried by connecting links 23, 24 which are pivotably mounted on the distal ends of arms 25, 26
  • Drive arms 29, 30 are formed integrally with arms 25 and 26 and are interconnected by a link 31.
  • Arm 32 is also formed integrally with arms 26, 30 and is interconnected with the same drive mechanism connected to the arm 19 so that the cradles 7 and 22 are caused to remain in a horizontal position and move together reciprocably toward and away from the board 20.
  • a sheet which has already been cut but has not had the waste portions moved is moved into position on the board 20.
  • this is generally accomplished by means of gripper bars which extend transversely across the press and which are carried by chains 33, 34 which, in turn, are guided along chain guides 35, 36.
  • Operation of the drive mechanism for the cradles 7, 22 causes these two elements to move toward the board 20 and the stripping tools 6, 5 supported respectively by those cradles move toward one another and into contact with the waste portion of the sheet mounted on the board 20.
  • a mating pair of upper and lower stripping tools engage a waste portion of the sheet to be stripped and these tools and the sandwiched waste material are then caused to move slightly above the plane of the remainder of the sheet so as to positively effect the stripping operation.
  • the upper stripping tools are not mounted directly on the cradle 22 but are mounted on a frame 38 which is in turn mounted for horizontal sliding movement in carriages 2211 which, in turn, is carried by the cradle 22. It is sometimes desirable or necessary to raise the upper frame in order, for instance, to remove jammed paper from the stripping station. For this reason means are provided to permit the entire carriage 22a along with the frame 38 to be pivotally moved within the stripping station. To accomplish this result the carriage 22a is in turn supported by the cradle 22 and has its lower surface 22b resting on a shoulder 22c of the cradle 22 as shown in FIG. 2.
  • the frame 37 is slidably mounted in a guideway 37a formed in the lower cradle 7 itself so that it too can be horizontally withdrawn from the side of the press.
  • the frame 37 has a vertically extending plate 39 connected to its left hand end (as viewed in FIG. 3) and this plate has its right vertical surface maintained in engagement with an abutment 40 by means of a fastener 41. When the fastener 41 is released, the frame 37 can be withdrawn horizontally from the cradle 7 in the manner illustrated in FIG. 1.
  • the frame 38 can be withdrawn horizontally from the carriage 22 upon release of a fastener 42 which maintains a plate 43 connected to the frame 38 in engagement with an abutment 44.
  • the stripping tools 5, 6 to be mounted on the frames 38, 37 can be accurately positioned with respect to one another and with respect to a sheet to be stripped while the two frames 38, 37 are Withdrawn from the side of the press.
  • a locking mechanism 45 is provided to positively lock the carriage 22a and the cradle 22 together for comovement. It consists of a pair of rods 46 which are guided for slideable movement within brackets 47 and are so designed that upon rotational movement of a lock arm 48, the rods 46 will each be caused to move outwardly and into corporate openings 49 formed in the cradle 22. Upon movement of the arm 48 to the right as seen in FIG. 2 the rods 46 are withdrawn from the openings 49 and the carriage 22a along with its frame 38 can be pivoted about its axes 50 in the manner shown in broken lines in FIG. 3. It will be noted that pivoting of the carriage 22a will nearly always be affected when the carriage is in its uppermost position.
  • a press for carrying sheet material wherein waste is stripped from the sheet material by stripping tools the improvement which comprises: a cradle mounted for reciprocable movement within said press relative to the sheet to be stripped, a carriage mounted for pivotable movement on said cradle, a frame mounted for slideable movement within said carriage whereby said frame can be withdrawn from the side of said carriage and press, and stripping tools mounted on said frame.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)
US3786731D 1971-07-13 1972-07-10 Press for cutting sheet material Expired - Lifetime US3786731A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1030371A CH530850A (fr) 1971-07-13 1971-07-13 Presse à découper une matière en feuille

Publications (1)

Publication Number Publication Date
US3786731A true US3786731A (en) 1974-01-22

Family

ID=4361739

Family Applications (1)

Application Number Title Priority Date Filing Date
US3786731D Expired - Lifetime US3786731A (en) 1971-07-13 1972-07-10 Press for cutting sheet material

Country Status (11)

Country Link
US (1) US3786731A (ja)
JP (1) JPS5823597Y2 (ja)
BE (1) BE785261A (ja)
CA (1) CA966773A (ja)
CH (1) CH530850A (ja)
DE (1) DE2231935B2 (ja)
ES (1) ES405175A1 (ja)
FR (1) FR2151835A5 (ja)
GB (1) GB1396008A (ja)
IT (1) IT959527B (ja)
SE (1) SE372725B (ja)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041847A (en) * 1974-06-21 1977-08-16 Stanztechnik Gmbh Roeder & Spengler Apparatus for separating punched-out workpieces from the surrounding waste material
US4175477A (en) * 1977-05-07 1979-11-27 Minoru Hirota Plate type punching machine
US4371369A (en) * 1980-04-25 1983-02-01 Franklin Corrugated Design, Inc. Automatic register system for die cutting operations
US5049122A (en) * 1989-09-19 1991-09-17 Marguip, Inc. Apparatus for stripping scrap from die cut blanks
US5474219A (en) * 1993-02-15 1995-12-12 Kyoeki Kogyo Kabushiki Kaisha Apparatus for and method of stripping paperboard
US5605527A (en) * 1994-05-13 1997-02-25 Bobst Sa Waste stripping station in a machine that die-cuts plate-like workpieces
US5784939A (en) * 1994-05-04 1998-07-28 Bobst Sa Device for centering and locking a tool-supporting frame in a die-cutting machine
US6006636A (en) * 1997-07-24 1999-12-28 International Business Machines Corporation Programmable punch mechanism
EP1074353A2 (fr) * 1999-08-02 2001-02-07 Bobst S.A. Outil universel d'éjection
US6477930B1 (en) 1999-01-19 2002-11-12 Peter E. Sandford Jogger member, system and method for mounting jogger members and female and male blanking dies provided therewith
US6520900B1 (en) 1999-10-20 2003-02-18 Peter E. Sandford Methods for erection of female blanking die and universal press frames for use in such methods
US20050227846A1 (en) * 2004-04-08 2005-10-13 Paolo Quercia Stripping device for a press
US20050227847A1 (en) * 2004-04-08 2005-10-13 Paolo Quercia Stripping device for a press
WO2009132410A1 (en) * 2008-05-02 2009-11-05 Paolo Quercia Stripping device for a press
US20090272499A1 (en) * 2008-05-05 2009-11-05 Paolo Quercia Stripping device for a press

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2819441A1 (de) * 1978-05-03 1979-11-08 Guenter O Stumpf Vorrichtung zum herausloesen von aus einer materialbahn, insbesondere einer mehrlagigen stoffbahn, ausgeschnittenen materialbereichen aus dieser materialbahn
CH667420A5 (fr) * 1986-04-14 1988-10-14 Bobst Sa Dispositif de manutention pour echanger les outils d'une presse a decouper.
CH683681A5 (fr) * 1990-04-26 1994-04-29 Bobst Sa Table pour la préparation d'outils de séparation des poses dans une machine de découpage de feuilles pour la production d'emballages.
DE4408165C2 (de) * 1994-03-11 1998-11-26 Wabaema Gmbh Brotschneidemaschine mit Brotschieber

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2220296A (en) * 1940-02-16 1940-11-05 Geo Knight & Co Combination perforating die and striking plate
US2557504A (en) * 1950-04-17 1951-06-19 Fleming Specialty Company Cutout clearer for perforated containers
US3055275A (en) * 1958-02-22 1962-09-25 Schroter Friedrich Method and device for striking out the waste or use from punched sheet workpieces
US3060776A (en) * 1955-05-24 1962-10-30 Bobst & Son S A J Presses for cutting sheet material
US3167992A (en) * 1962-01-11 1965-02-02 Bobst J Device for the fixing of the tool of a platen press against the upper bed
US3249272A (en) * 1964-08-13 1966-05-03 Arkay Packaging Corp Method and apparatus for stripping waste from a die cut sheet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124262B2 (ja) * 1971-09-17 1976-07-22

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2220296A (en) * 1940-02-16 1940-11-05 Geo Knight & Co Combination perforating die and striking plate
US2557504A (en) * 1950-04-17 1951-06-19 Fleming Specialty Company Cutout clearer for perforated containers
US3060776A (en) * 1955-05-24 1962-10-30 Bobst & Son S A J Presses for cutting sheet material
US3055275A (en) * 1958-02-22 1962-09-25 Schroter Friedrich Method and device for striking out the waste or use from punched sheet workpieces
US3167992A (en) * 1962-01-11 1965-02-02 Bobst J Device for the fixing of the tool of a platen press against the upper bed
US3249272A (en) * 1964-08-13 1966-05-03 Arkay Packaging Corp Method and apparatus for stripping waste from a die cut sheet

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041847A (en) * 1974-06-21 1977-08-16 Stanztechnik Gmbh Roeder & Spengler Apparatus for separating punched-out workpieces from the surrounding waste material
US4175477A (en) * 1977-05-07 1979-11-27 Minoru Hirota Plate type punching machine
US4371369A (en) * 1980-04-25 1983-02-01 Franklin Corrugated Design, Inc. Automatic register system for die cutting operations
US5049122A (en) * 1989-09-19 1991-09-17 Marguip, Inc. Apparatus for stripping scrap from die cut blanks
US5474219A (en) * 1993-02-15 1995-12-12 Kyoeki Kogyo Kabushiki Kaisha Apparatus for and method of stripping paperboard
US5784939A (en) * 1994-05-04 1998-07-28 Bobst Sa Device for centering and locking a tool-supporting frame in a die-cutting machine
CN1065167C (zh) * 1994-05-04 2001-05-02 鲍勃斯脱股份有限公司 定中和锁定模版切割机中的工具支架的装置
US5605527A (en) * 1994-05-13 1997-02-25 Bobst Sa Waste stripping station in a machine that die-cuts plate-like workpieces
AU678699B2 (en) * 1994-05-13 1997-06-05 Bobst Sa A waste ejection station in a machine for cutting flat workpieces
CN1050794C (zh) * 1994-05-13 2000-03-29 鲍勃斯脱股份有限公司 纸板切割机的废边料排出台
US6006636A (en) * 1997-07-24 1999-12-28 International Business Machines Corporation Programmable punch mechanism
US6477930B1 (en) 1999-01-19 2002-11-12 Peter E. Sandford Jogger member, system and method for mounting jogger members and female and male blanking dies provided therewith
EP1074353A2 (fr) * 1999-08-02 2001-02-07 Bobst S.A. Outil universel d'éjection
EP1074353A3 (fr) * 1999-08-02 2003-02-05 Bobst S.A. Outil universel d'éjection
US6733430B1 (en) 1999-08-02 2004-05-11 Bobst Sa Universal ejection tool
US6520900B1 (en) 1999-10-20 2003-02-18 Peter E. Sandford Methods for erection of female blanking die and universal press frames for use in such methods
US20050227846A1 (en) * 2004-04-08 2005-10-13 Paolo Quercia Stripping device for a press
US20050227847A1 (en) * 2004-04-08 2005-10-13 Paolo Quercia Stripping device for a press
US7360475B2 (en) 2004-04-08 2008-04-22 Paolo Quercia Stripping device for a press
WO2009132410A1 (en) * 2008-05-02 2009-11-05 Paolo Quercia Stripping device for a press
US20090272499A1 (en) * 2008-05-05 2009-11-05 Paolo Quercia Stripping device for a press

Also Published As

Publication number Publication date
CA966773A (en) 1975-04-29
JPS5823597Y2 (ja) 1983-05-20
SE372725B (ja) 1975-01-13
ES405175A1 (es) 1975-07-16
BE785261A (fr) 1972-10-16
FR2151835A5 (ja) 1973-04-20
GB1396008A (en) 1975-05-29
IT959527B (it) 1973-11-10
CH530850A (fr) 1972-11-30
DE2231935A1 (de) 1973-02-08
JPS5397482U (ja) 1978-08-08
DE2231935B2 (de) 1977-08-04

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