US3344697A - Process of clamping a pile of sheets during cutting thereof - Google Patents

Process of clamping a pile of sheets during cutting thereof Download PDF

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Publication number
US3344697A
US3344697A US395262A US39526264A US3344697A US 3344697 A US3344697 A US 3344697A US 395262 A US395262 A US 395262A US 39526264 A US39526264 A US 39526264A US 3344697 A US3344697 A US 3344697A
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United States
Prior art keywords
pressure
knife
pile
stack
valve
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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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US395262A
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English (en)
Inventor
Schneider Willi
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.)
FREY WIEDERKEHR AND CIE
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FREY WIEDERKEHR AND CIE
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • 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
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B5/00—Clicking, perforating, or cutting leather
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B2700/00—Mechanical treatment or processing of skins, hides or leather in general; Pelt-shearing machines; Making driving belts; Machines for splitting intestines
    • C14B2700/11—Machines or apparatus for cutting or milling leather or hides
    • C14B2700/113—Cutting presses
    • 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
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/0419—By distorting within elastic limit
    • Y10T83/0429—By compressing
    • 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
    • Y10T83/04—Processes
    • Y10T83/06—Blanking
    • 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
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2122—By ejector within a hollow cutter
    • Y10T83/2127—Ejector operated with return stroke of cutter
    • 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
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2135—Moving stripper timed with tool stroke
    • Y10T83/215—Carried by moving tool element or its support
    • Y10T83/2153—Fluid pressure actuated stripper
    • 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
    • Y10T83/343—With means to deform work temporarily
    • 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
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp
    • Y10T83/5715—With sequencing means
    • 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
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp
    • Y10T83/5787—Clamp driven by yieldable means
    • Y10T83/5805—Fluid pressure yieldable drive means
    • 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
    • Y10T83/748—With work immobilizer
    • Y10T83/7487—Means to clamp work
    • Y10T83/752—With means providing for plural steps in clamping stroke
    • 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
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8858—Fluid pressure actuated

Definitions

  • this object is accomplished by providing an adjustable pressure or compression which is exerted on the pile to be processed, prior to and during the cutting operation. This measure will insure dimensional accuracy from the topmost to the bottom-most blank.
  • the present invention also proposes an apparatus for carrying out the process according to the invention, wherein a punch having the same contour as the blank is movably arranged inside the punching tool and is operable by driving means through which an adjustatble pressure is exerted on the punch.
  • FIGURE 1 shows a vertical section through the apparatus
  • FIGURE 2 is a diagrammatic representation of the control mechanism of the apparatus.
  • element 1 is a hydraulic piston or plunger which is vertically movable in a cylinder 2 and which is acted on by springs (not shown) which tend to move said plunger into its upper limit position.
  • the plunger 1 can be moved downwardly by a pressure fluid entering the cylinder 2 from the top (see FIG. 2).
  • a holding or supporting ring 3 Fixed to the bottom of the plunger 1 is a holding or supporting ring 3, on which a base plate 4 is rotatably positioned, said base plate being provided with a support 5 into which a knife support 6 is inserted, on which a knife 7 is fixed. Suspended in the center of the knife support 6 is a punch 8, a wedge 9 preventing rotation of the punch 8 in relation to the knife support 6. Fixed to the bottom of the punch 8 is a punch plate 10 which carries an elastic covering 10a on the underside.
  • FIG. 1 also shows a pile or stack of paper sheets 17 on a table top 16, the blanks being cut or punched from said pile of paper by means of the knife 7.
  • the cylinder 2 is connected to an hydraulic pump 19 by way of a line 18, while a magnetic valve 22 is connected into a line or piping which leads 3,344,597 Patented Get. 3, 1967 to a sump or pit 21.
  • a regulable push button switch 23 is also connected to the line 18.
  • a compressed-air line 24 leading to a magnetic valve 25 is connected to the duct 15 (FIG. 1) communicating with the cylinder 12.
  • a line 26 leads from the magnetic valve 25 to a magnetic valve 27 to which is connected a line 28 leading to the outside and a line 30 leading to a regulating member 29.
  • a line 31 leads, by way of a lubricator device 32, a pressure-reducing valve 33 with relief or check-valve 34 and by way of a filter 35, to a compressed-air feed line 36.
  • a line 37 leads from the magnetic valve 25, by way of a throttle member 38, a lubricator device 39, a pressure-reducing valve 40 with a check-valve 41 and by way of a filter 42 to the compressed-air feed line 36.
  • Another line 43 connects the line 24 to a magnetic valve 44, from which a line 45 leads, by way of a lubricator device 46, a pressure-reducing valve 47 with check-valve 48 and by way of a filter 49, to the compressed-air feed line 36.
  • the contact of switch 23 and the magnet coils of the magnetic valves 22, 25, 27 and 44 are connected to a control source of alternating current by way of contacts s0, s1, s2, s3, s4, 55, 56.
  • the above-described device operates in the following manner:
  • the contact 50 Upon switching on the press, the contact 50 is closed.
  • the contacts 54, are closed when the base plate 4 is in operating position.
  • the coil of the magnetic valve 27 is excited when contacts 50, 54, 55 are closed, and said valve is reversed so that compressed air flows from the line 36 by Way of the filter 35, the check-valve 34, the pressurereducing valve 33, the lubricator 32, the control valve 29, the magnetic valve 27, the magnetic valve 25, the duct 15, the annular chamber 13 and the passage 14 into the cylinder 12 and forces the piston 11 and the punch 8 downward.
  • the contact 51 closes and the magnetic valve 22 is reversed, so that pressure fluid is pressed by the pump 19 through the line 18 into the cylinder 2, and the plunger 1 moves downward.
  • the punch plate 10 the contour of which corresponds to that of the blank to be punched, first impinges on the pile 17 and compresses said pile with a preliminary pressure adjustable by the pressure-reducing valve 33. This has the effect that the air within the pile is forced out, thereby insuring that all layers are in accurately level position when the knife impinges on the pile.
  • the pressure during the cutting process will be increased correspondingly. This will prevent an undercutting, i.e., an inward deflection of the knife.
  • the coil of the magnetic valve 44 is then excited by Way of the closed contact 52, and said valve is reversed, so that a pressure is now produced by way of the pressure-reducing valve 47 in the cylinder 12, which is required for the subsequent expulsion of the blanks.
  • the opening of the contact 53 switches off the magnetic valve 22, so that the pressure fluid flows from the line 18 into the sump 21 and the piston 1 is relieved from pressure and is returned by'spring force as aforesaid.
  • the above-described apparatus comprises three different pressure stages which are switched on and off by the magnetic valves 25, 27 and 44. There may also be less pressure stages. For example, if no special pressure stage is required for the expulsion, the stage in question, i.e., the magnetic valve 44 and the pressure-reducing valve 47, may be dispensed with. It is sometimes possible to operate with a single regulable pressure stage, in which case the control mechanism could be further simplified by omitting the press switch 23, the magnetic valve 25 and the associated pressure-reducing valve 40 and the throttle member 38.
  • a pressure ffuid may be fed to the cylinder.
  • the piston 1 may be provided with a thin calibrated central bore, through which pressure fluid flows from the cylinder 2 into the cylinder 12 and an outlet may be connected to the duct 15, to which outlet may be connected one, two or three control or safety magnetic valves which can be controlled in the same manner as the magnetic valves shown in FIG. 2.
  • the punch 8 may also be actuated by an electromagnet, in which case the adjustable pressure, possibly adjustable at two or three stages, exerted on the punch plate 10, can be set by changing the voltage applied to the magnet.
  • a process for cutting sections out of a stack of sheets by means of forcing a cutting knife through said stack comprising applying a first pressure to the top of said stack prior to applying the knife thereto, applying the knife to said stack, and applying a second pressure to the stack when the knife has moved a predetermined distance and independently of the pressure of the knife to assure the dimensional consistency of said sections throughout said stack.
  • a process as claimed in claim 1, comprising continuing to maintain pressure against the stack while the knife is being withdrawn therefrom.
  • a process as claimed in claim 7, comprising commencing removal of pressure from the stack before the knife has completed its return stroke to its initial position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US395262A 1963-11-08 1964-09-09 Process of clamping a pile of sheets during cutting thereof Expired - Lifetime US3344697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1374963A CH406822A (de) 1963-11-08 1963-11-08 Verfahren und Vorrichtung zum Schneiden,bzw.Stanzen von Zuschnitten aus Stapeln von Papier, Kunststoffolien, Textilien usw.

Publications (1)

Publication Number Publication Date
US3344697A true US3344697A (en) 1967-10-03

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ID=4394957

Family Applications (2)

Application Number Title Priority Date Filing Date
US395262A Expired - Lifetime US3344697A (en) 1963-11-08 1964-09-09 Process of clamping a pile of sheets during cutting thereof
US695294A Expired - Lifetime US3501987A (en) 1963-11-08 1967-07-21 Process and apparatus for the cutting or punching of sections from piles of sheets

Family Applications After (1)

Application Number Title Priority Date Filing Date
US695294A Expired - Lifetime US3501987A (en) 1963-11-08 1967-07-21 Process and apparatus for the cutting or punching of sections from piles of sheets

Country Status (4)

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US (2) US3344697A (de)
AT (1) AT268035B (de)
CH (1) CH406822A (de)
GB (1) GB1007090A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505918A (en) * 1966-06-21 1970-04-14 Willy Schneider Apparatus for die-cutting blanks from a pile of sheet material
US3555949A (en) * 1965-04-02 1971-01-19 Smithe Machine Co Inc F L Die cutting presses
US4374795A (en) * 1980-09-11 1983-02-22 Bell Telephone Laboratories, Incorporated Production of mold charge of elastomeric material containing magnetic oxide filler
US6540456B2 (en) 1999-12-02 2003-04-01 James A. Conley Method and apparatus for cutting low density flexible material using a rotary cutting tool
CN105420424A (zh) * 2015-12-19 2016-03-23 平湖市兴荣箱包有限公司 箱包皮加工刀具及设备

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949631A (en) * 1974-10-03 1976-04-13 Rubin Goldman Punching holes in thin sheet material
GB8907795D0 (en) * 1989-04-06 1989-05-17 Tecflex Ltd Punches
CN106164300B (zh) * 2014-04-11 2019-10-08 考麦兹股份公司 用于切割兽皮和类似物的机器用的切割装置
US9417589B2 (en) * 2014-04-29 2016-08-16 Nisca Corporation Sheet punching device, sheet processing device provided with the same, and image forming device
CN106343659B (zh) * 2016-08-20 2019-06-04 广东足迹鞋业有限公司 一种鞋面料精细裁边装置
CN108687863B (zh) * 2018-05-17 2019-09-24 河南威浦仕医疗科技有限公司 水凝胶眼贴贴剂切割装置
CN110757695B (zh) * 2019-10-28 2022-09-30 常州市兆华塑料制品有限公司 一种塑料制品生产用的修边装置
IT202000018505A1 (it) * 2020-07-30 2022-01-30 Maurizio Corazzi Metodo produttivo per oggetti compostabili
CN119910724B (zh) * 2025-04-02 2025-06-20 大连大鑫无纺科技有限公司 打孔可穿戴式无纺布湿巾、干巾的加工设备及工艺

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1028920A (en) * 1910-10-19 1912-06-11 Niel Gray Jr Paper-cutting machine.
US1522795A (en) * 1923-03-23 1925-01-13 Waterbury Farrel Foundry Co Method of making rubber articles and the like
US1617511A (en) * 1926-04-07 1927-02-15 Miller Rubber Co Method of cutting sponge rubber
US2122186A (en) * 1937-04-06 1938-06-28 Southworth Edward Round-cornering machine
US2215643A (en) * 1939-03-07 1940-09-24 Mid West Production Engineerin Hydraulic hold-down stripper
US2346100A (en) * 1942-04-02 1944-04-04 Charles A Wright Shear
US2570873A (en) * 1946-05-31 1951-10-09 E P Lawson Co Inc Paper cutter
US2579940A (en) * 1946-08-27 1951-12-25 Continental Can Co Pneumatic stripper
US2704125A (en) * 1951-11-23 1955-03-15 Wales Strippit Corp Self-stripping perforation punch
US2776540A (en) * 1955-01-06 1957-01-08 Hannifin Corp Hydraulic punching apparatus
US3054317A (en) * 1954-06-25 1962-09-18 Jr James B Castle Hydraulically powered shear
US3107567A (en) * 1960-07-15 1963-10-22 Koehring Co Hydraulic blanking press

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667922A (en) * 1947-12-20 1954-02-02 Harris Seybold Co Machine for cutting sheet material
US2649153A (en) * 1948-09-04 1953-08-18 Harris Seybold Co Hydraulic cutting machine

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1028920A (en) * 1910-10-19 1912-06-11 Niel Gray Jr Paper-cutting machine.
US1522795A (en) * 1923-03-23 1925-01-13 Waterbury Farrel Foundry Co Method of making rubber articles and the like
US1617511A (en) * 1926-04-07 1927-02-15 Miller Rubber Co Method of cutting sponge rubber
US2122186A (en) * 1937-04-06 1938-06-28 Southworth Edward Round-cornering machine
US2215643A (en) * 1939-03-07 1940-09-24 Mid West Production Engineerin Hydraulic hold-down stripper
US2346100A (en) * 1942-04-02 1944-04-04 Charles A Wright Shear
US2570873A (en) * 1946-05-31 1951-10-09 E P Lawson Co Inc Paper cutter
US2579940A (en) * 1946-08-27 1951-12-25 Continental Can Co Pneumatic stripper
US2704125A (en) * 1951-11-23 1955-03-15 Wales Strippit Corp Self-stripping perforation punch
US3054317A (en) * 1954-06-25 1962-09-18 Jr James B Castle Hydraulically powered shear
US2776540A (en) * 1955-01-06 1957-01-08 Hannifin Corp Hydraulic punching apparatus
US3107567A (en) * 1960-07-15 1963-10-22 Koehring Co Hydraulic blanking press

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555949A (en) * 1965-04-02 1971-01-19 Smithe Machine Co Inc F L Die cutting presses
US3505918A (en) * 1966-06-21 1970-04-14 Willy Schneider Apparatus for die-cutting blanks from a pile of sheet material
US4374795A (en) * 1980-09-11 1983-02-22 Bell Telephone Laboratories, Incorporated Production of mold charge of elastomeric material containing magnetic oxide filler
US6540456B2 (en) 1999-12-02 2003-04-01 James A. Conley Method and apparatus for cutting low density flexible material using a rotary cutting tool
CN105420424A (zh) * 2015-12-19 2016-03-23 平湖市兴荣箱包有限公司 箱包皮加工刀具及设备
CN105420424B (zh) * 2015-12-19 2018-12-04 平湖市兴荣箱包有限公司 箱包皮加工刀具及设备

Also Published As

Publication number Publication date
CH406822A (de) 1966-01-31
US3501987A (en) 1970-03-24
AT268035B (de) 1969-01-27
GB1007090A (en) 1965-10-13

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