EP0723842B1 - Dispositif pour la coupe de matériau en feuille - Google Patents

Dispositif pour la coupe de matériau en feuille Download PDF

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Publication number
EP0723842B1
EP0723842B1 EP95119684A EP95119684A EP0723842B1 EP 0723842 B1 EP0723842 B1 EP 0723842B1 EP 95119684 A EP95119684 A EP 95119684A EP 95119684 A EP95119684 A EP 95119684A EP 0723842 B1 EP0723842 B1 EP 0723842B1
Authority
EP
European Patent Office
Prior art keywords
locking element
pressure bar
spring
lever
bent angle
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
EP95119684A
Other languages
German (de)
English (en)
Other versions
EP0723842A1 (fr
Inventor
Helmut Gross
Adolf Rasch
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.)
Adolf Mohr Maschinenfabrik GmbH and Co KG
Original Assignee
Adolf Mohr Maschinenfabrik GmbH and Co KG
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 Adolf Mohr Maschinenfabrik GmbH and Co KG filed Critical Adolf Mohr Maschinenfabrik GmbH and Co KG
Publication of EP0723842A1 publication Critical patent/EP0723842A1/fr
Application granted granted Critical
Publication of EP0723842B1 publication Critical patent/EP0723842B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
    • 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
    • B26D7/22—Safety devices specially adapted for cutting machines
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/01—Safety devices
    • 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
    • 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
    • Y10T83/7533—With biasing or counterbalancing 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
    • Y10T83/7553—Including means to retain clamp jaw in position
    • 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
    • Y10T83/756—Self-locking 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9478—Tool is single element reciprocable generally perpendicularly to elongate cutting edge [e.g., shear, etc.]

Definitions

  • the invention relates to a device for cutting leafy good, with a table to hold the good, a Knife for cutting the good and one on the one to be cut Easily lowerable press beam, with a drive to lower the Press bar and a return spring for lifting the press bar are provided.
  • a device for cutting sheet-like material with a Table for receiving the goods, a knife for cutting the Good and a press beam that can be lowered onto the material to be cut is known for example from EP 0 056 874 A1.
  • a cutting device is used to lower the Press beam on the material to be cut by means of a drive, while a return spring with the drive not activated Press bar lifts.
  • DE-A-31 16 292 is a device according to the preamble of claim 1, to reduce the Press beam pressure force on a stack of paper in a paper cutter known during the cut hint.
  • a safety gear is provided which locks the press beam when the return spring breaks.
  • locked is to be understood comprehensively.
  • the Locking should be achieved that the press beam immediately after the return spring breaks or after replacement slight descent path is fixed to a pitch of the press beam on the material or extremities to be cut Prevent operator effectively. It is preferred when locking the press beam around its locking, whereby the setting of the press beam after a short distance is carried out mechanically in a particularly simple manner. It is especially thought that the press beam indirectly rested. On the other hand, it is also conceivable to use the press beam to lock directly, for example hydraulically.
  • An advantageous design provides that the locking element pivoted in the drive train between two stops is, the return spring on a stationary component of the Cutting device and the locking element attacks, as well as a Release spring with lower spring force against the direction of force the return spring acts on the locking element.
  • the return spring With intact Return spring pulls the locking element against one Stop, the path of movement of the locking element permanently runs outside the stationary stop part. Breaks the Return spring, and thus becomes ineffective, swings the release spring the locking element against the other stop, which in the Path of movement of the locking element now the stationary Stop part protrudes.
  • the safety gear can be placed anywhere on the drive train be arranged to the press beam and could in principle also be assigned directly to the press beam.
  • a preferred one Design provides that the press beam in one Machine stand is guided and the drive train of the press beam essentially by both ends of the pressure beam on this attacking tie rods, attacking at the other end of the tie rods, angle levers pivoted in the machine stand, a rod connecting the angle lever and one with a the angle lever cooperating, actual drive is formed is, the return spring on the machine stand and in the Connecting rod attacks the locking element.
  • a particularly simple design of the locking element results if this is designed as an angular element, the in its corner area is pivotally mounted in the connecting rod is, and on a lever of the Winkelemementes in the area of free lever end engages the return spring and the free end the other lever of the angle element in operative connection with the stationary stop part can be brought.
  • a rectangular one Arrangement of the lever of the angle element can thus be large Lever arm engage the return spring and it's the other Lever arm in the event of breakage of the return spring when opening essentially only compressive forces on the stationary stop part exposed.
  • the release spring is convenient in the connecting rod stored and designed as a leg spring, one of which Thighs on the connecting rod and its other Leg on the locking element between the pivot axis of the locking element and the point of application of the return spring supports.
  • the two stops of the locking element can for example by one in the connecting rod Cone be formed, which is at a distance from the pivot axis of the Locking element arranged in this, in the pivoting direction of the locking element extending oblong hole.
  • the stationary stop part a locking backdrop to the catch position the pressure beam dependent engagement of the locking lever having.
  • the background is that in the two angle levers mounted connecting rod depending on the position of the Bar is moved on an arc, with the consequence that the locking lever when the return spring is not broken makes a corresponding movement.
  • the latching backdrop is with the large number of stop stages for the locking element, in almost constant distance to the respective locking lever position arranged.
  • Figure 1 illustrates the basic structure of a Cutting machine for cutting sheet-like material, in one Plane perpendicular to the feed direction of the material to be cut or parallel to the travel plane of the press beam and the cutting knife seen. Only those essential to the invention are shown Parts.
  • FIG. 1 is in one Machine stand 1 a table 12 with a horizontally aligned Table surface 13 stored, the inclusion of sheet Cutting material 2 is used.
  • the press beam 11 in two parallel, vertically oriented Guides 14 is the press beam 11 in the direction of the double arrows Z can be lowered or raised, the maximum raised in FIG. 1 Position of the press beam 11 is shown, which shows is that there is a distance between the surface of the material to be cut 2 and the lower edge 15 of the press beam 11 remains.
  • angle levers 4 laterally, two parallel tie rods engage on the press beam 11 3 on, which are pivotally connected to angle levers 4, the in turn are pivotally mounted in the machine stand 1.
  • the other end of the respective angle lever 4 is pivotable with a connecting rod 5 connected, so that the two Drawbars 3 kinematically couples so that synchronism of the press beam 11 is created.
  • One of the angle levers 4 has a third having the function of an operating arm Arm 4a, whose free end in the travel of the piston 10a of a hydraulic pressure cylinder 10 that projects in the machine stand 1 is stored.
  • the return spring 6 is there formed as a tensile force coil spring.
  • the structure of the safety device according to the invention is special the representation of Figures 2 and 3:
  • the Connecting rod 5 is concrete by two parallel to each other arranged rods 5a and 5b formed, which are not between them only the free lever arms of the angle lever 4 can be pivoted record, but also designed as an angle element 8 Locking element.
  • An axially secured bolt penetrates 16 aligned holes in the two rods 5a and 5b and with Play a hole in the angular area of the angular element 8.
  • In Distance to the bolt 16 passes through another axially secured Bolt 17 the rods 5a and 5b as well as with a concentric one to the bolt 16 arranged slot 18 in the substantially vertically oriented lever 8a of the angle element 8.
  • leg spring 7 causes the angle element 8 in the position shown in Figure 2 with dashed lines is pivoted, the bolt 17 now in the area of the other End of the elongated hole 18 abuts the lever 8a.
  • the figures illustrate that with the lever 8b of the angle element 8 a stored in the machine stand 1, thus stationary Stop part 9 cooperates, which on its lever 8b facing side is designed as a locking link 20.
  • the in Area of the locking link not shown contour line 21 of the Rastkulisse 20 is arranged inclined so that at the Angular element 8 acting return spring 6, the free end 8c at every position of the press beam 11 the same, small Has distance to the contour line 21. Breaks the return spring 6, is about the leg spring 7, the angle element 8 in the Dashed position pivoted, the free end 8c of Lever 8b comes against one of the steps 22 of the locking link 20 and prevents the connecting rod 5 from further in Direction of arrow Y moves.

Landscapes

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

Claims (9)

  1. Dispositif pour la coupe de matériau en feuille (2) avec une table (12) qui reçoit le produit, un couteau pour couper le produit et un sommier de serrage (11) abaissable sur le produit à couper, où on prévoit un entraínement (10) pour abaisser le sommier de serrage et un ressort de rappel (6) pour relever le sommier de serrage,
    caractérisé par
    un dispositif d'arrêt (7, 8, 9), qui bloque le sommier de serrage en cas de rupture du ressort de rappel (6).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    lors de la rupture du ressort de rappel (6) le dispositif d'arrêt (7, 8, 9) encliquette indirectement le sommier de serrage (11).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que
    le dispositif d'arrêt (7, 8, 9) présente un élément d'encliquetage (8) disposé dans la tringlerie d'entraínement (3, 4, 5, 10) par rapport au sommier de serrage (11) sur la course duquel dépasse une pièce de butée fixe (9) en cas de rupture du ressort.
  4. Dispositif selon la revendication 3,
    caractérisé en ce que
    l'élément d'encliquetage (8) dans la tringlerie d'entraínement (3, 4, 5, 10) est logé de façon à pouvoir pivoter entre deux butées (goujon 17, trou oblong 18), où le ressort de rappel (6) est en prise sur une pièce de châssis fixe (1) du dispositif de coupe et sur l'élément d'encliquetage (8), et un ressort de libération (7) de force de rappel plus faible charge l'élément d'encliquetage (8) en sens inverse de la force du ressort de rappel (6).
  5. Dispositif selon la revendication 3 ou 4,
    caractérisé en ce que
    le sommier de serrage (11) est guidé dans un châssis de machine (1) et la tringlerie d'entraínement (3, 4, 5, 10) du sommier de serrage (11) est formée essentiellement par des tringles de traction (3) de chaque côté du sommier de serrage (11) en prise sur lui, une équerre (4) logée en pivotement dans le châssis de machine (1), en prise sur l'autre extrémité des tringles de traction (3), une tringle (5) reliant les équerres (4), ainsi qu'un entraínement distinct (10) coopérant avec l'une des équerres (4) où le ressort de rappel (6) est en prise sur le châssis de machine (1) et agit sur l'élément d'encliquetage (8) logé dans la tringle de liaison (5).
  6. Dispositif selon la revendication 5,
    caractérisé en ce que
    l'élément d'encliquetage (8) est en forme d'élément d'équerre, qui est logé en pivotement en son angle sur la tringle de liaison (5) ainsi qu'il est en prise sur un levier (8a) de l'élément d'équerre (8) dans la zone de l'extrémité de levier libre sur le ressort de rappel (6) et l'extrémité libre (8c) de l'autre levier (8b) de l'élément d'équerre (8) peut être mis en coopération avec la pièce de butée fixe (9).
  7. Dispositif selon la revendication 6,
    caractérisé en ce que
    la pièce de butée fixe (9) est une coulisse à crans (20) pour réaliser la prise de l'élément d'encliquetage (8) en fonction de la position de serrage du sommier de serrage (11).
  8. Dispositif selon l'une des revendications 4 à 7,
    caractérisé en ce que
    les deux butées de l'élément d'encliquetage (8) sont constituées par un tourillon (17) logé dans la tringle de liaison (5) qui traverse un trou oblong (18) disposé et s'étendant dans le sens de pivotement de l'élément d'encliquetage (8) dans celui-ci et à une certaine distance de l'axe de pivotement (16) de l'élément d'encliquetage (8).
  9. Dispositif selon l'une des revendications 1 à 8,
    caractérisé en ce que
    l'entraínement (10) distinct du sommier de serrage (11) est en forme de cylindre de pression.
EP95119684A 1995-01-26 1995-12-14 Dispositif pour la coupe de matériau en feuille Expired - Lifetime EP0723842B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19502291 1995-01-26
DE19502291A DE19502291C1 (de) 1995-01-26 1995-01-26 Vorrichtung zum Schneiden von blättrigem Gut

Publications (2)

Publication Number Publication Date
EP0723842A1 EP0723842A1 (fr) 1996-07-31
EP0723842B1 true EP0723842B1 (fr) 1998-06-10

Family

ID=7752315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95119684A Expired - Lifetime EP0723842B1 (fr) 1995-01-26 1995-12-14 Dispositif pour la coupe de matériau en feuille

Country Status (5)

Country Link
US (1) US5740710A (fr)
EP (1) EP0723842B1 (fr)
JP (1) JPH08229892A (fr)
DE (2) DE19502291C1 (fr)
ES (1) ES2118496T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7237465B2 (en) * 2005-02-24 2007-07-03 Chien Kai Huang Operation mechanism for pressing board of electric paper cutters
US7976001B2 (en) * 2007-12-28 2011-07-12 Seiko Ltd. Sheet stack cutter and finisher having the same
EP3243617B1 (fr) * 2016-05-13 2018-06-06 Adolf Mohr Maschinenfabrik GmbH & Co. KG Decoupeuse
EP3243616B1 (fr) * 2016-05-13 2018-06-06 Adolf Mohr Maschinenfabrik GmbH & Co. KG Decoupeuse
US20180118397A1 (en) * 2016-10-28 2018-05-03 Illinois Tool Works Inc. Wrapping machine printer arrangement and wrapping machine film cutter arrangement

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US440195A (en) * 1890-11-11 Press for bundle-wrapping
US53169A (en) * 1866-03-13 Paper-cutting machine
US368672A (en) * 1887-08-23 Leather-cutting machine
US734819A (en) * 1902-08-11 1903-07-28 George D Clapp Sole-leather-cutting machine.
US773742A (en) * 1904-04-12 1904-11-01 Child Acme Cutter And Press Co Paper-cutting machine.
US915532A (en) * 1907-10-26 1909-03-16 Daniel L Appelberry Meat-slicer.
US1091655A (en) * 1910-04-12 1914-03-31 Julius H Hampp Material-clamping mechanism for slicing-machines.
US1018380A (en) * 1911-07-08 1912-02-20 Nicholas L Minster Horseshoer's foot-vise.
US1547828A (en) * 1923-05-28 1925-07-28 John F Schroeter Automatic clamping device for paper-cutting and other machines
US1909598A (en) * 1929-02-06 1933-05-16 Racine Tool And Machine Compan Metal sawing machine
US2397896A (en) * 1944-04-21 1946-04-02 Cleveland Crane Eng Shear press
US2507581A (en) * 1945-02-26 1950-05-16 Cincinnati Milling Machine Co Safety device for broaching machines
US2506651A (en) * 1946-03-01 1950-05-09 E P Lawson Co Inc Hydraulic clamp for paper cutters
US2445248A (en) * 1946-07-22 1948-07-13 Harris Seybold Co Cutting machine
US2506436A (en) * 1948-12-08 1950-05-02 E P Lawson Co Inc Cutting knife clamp adjustment
JPS5039259B1 (fr) * 1970-09-30 1975-12-16
JPS526795B1 (fr) * 1971-02-24 1977-02-24
DE2635604C2 (de) * 1976-08-07 1985-11-07 Krug & Priester, 7460 Balingen Papierschneidmaschine
DE2727817C3 (de) * 1977-06-21 1980-02-07 Wilhelm Dahle Buero- Und Zeichengeraetefabrik, 8630 Coburg Schneideinrichtung, insbesondere Stapelschneider
DE3101911A1 (de) * 1981-01-22 1982-09-02 Karl Mohr "vorrichtung zum schneiden von papier, pappe oder dgl.."
DE3116292A1 (de) * 1981-04-24 1982-11-11 H. Wohlenberg KG - GmbH & Co, 3000 Hannover Vorrichtung zur herabsetzung der pressbalkendruckkraft bei einer papierschneidemaschine waehrend der schnittandeutung
US4561479A (en) * 1984-04-04 1985-12-31 Burdine Charles M Mechanical wood splitter

Also Published As

Publication number Publication date
DE59502499D1 (de) 1998-07-16
EP0723842A1 (fr) 1996-07-31
JPH08229892A (ja) 1996-09-10
ES2118496T3 (es) 1998-09-16
US5740710A (en) 1998-04-21
DE19502291C1 (de) 1996-02-15

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