EP0268162A1 - Paper punching devices - Google Patents

Paper punching devices Download PDF

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Publication number
EP0268162A1
EP0268162A1 EP87116370A EP87116370A EP0268162A1 EP 0268162 A1 EP0268162 A1 EP 0268162A1 EP 87116370 A EP87116370 A EP 87116370A EP 87116370 A EP87116370 A EP 87116370A EP 0268162 A1 EP0268162 A1 EP 0268162A1
Authority
EP
European Patent Office
Prior art keywords
punch
base plate
pressure plate
letter
mounting part
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.)
Granted
Application number
EP87116370A
Other languages
German (de)
French (fr)
Other versions
EP0268162B1 (en
Inventor
Gerhardt Sixt
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.)
Louis Leitz Firma
Original Assignee
Louis Leitz Firma
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 Louis Leitz Firma filed Critical Louis Leitz Firma
Priority to AT87116370T priority Critical patent/ATE50723T1/en
Publication of EP0268162A1 publication Critical patent/EP0268162A1/en
Application granted granted Critical
Publication of EP0268162B1 publication Critical patent/EP0268162B1/en
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
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
    • B26F1/36—Punching or perforating pliers

Definitions

  • the invention relates to a letter punch of the type specified in the preamble of claim 1.
  • the invention is therefore based on the object of improving the known letter punch in such a way that the transverse friction forces exerted on the punch are avoided when the punch is actuated.
  • the invention is based on the finding that the force application point of the pressure plate on the punch in the course of a stroke describes a pitch circle around the pivot point of the pressure plate and therefore a transverse friction on the punch when moving vertically Stamp head exercises.
  • the bearing blocks forming the punch guide, together with a die form an integral mounting part which can perform a slight tilting movement when the pressure plate is pivoted.
  • the punches are mounted on the pressure plate on their upper end face, for example by means of a pin, about an axis perpendicular to their longitudinal axis.
  • the only figure shows a letter punch in a vertical section through an assembly part forming the punch guide.
  • the letter punch consists of a base plate 1 which has the two side cheeks 10 which are bent vertically upwards and which is bent several times in its front region located below the insertion slot 34 and has a U-shaped cross section perpendicular to its front edge. A chip pan can be arranged in this cavity 15 formed in this way.
  • a pressure plate 2 is pivotally mounted in bearing points 11.
  • a curved rail 21 is arranged, which has at its apex a recess 22 into which a pin 42 formed on the punch 4 engages.
  • the punch 4 have in its upper region an annular bead 41, which serves to guide the punch 4 in a cylindrical sleeve 30.
  • the sleeve 30 forms together with one at its lower End arranged, two legs 31 and 32 having a one-piece mounting part 3.
  • the recess 35 in the upper leg 31 is used to guide the punch 4, while the recess 36 in the lower leg 32 forms the cutting die.
  • the mounting part 3 rests on the upwardly bent front part 13 of the base plate 1, which, in order to enable the mounting part 3 to tilt, has an upwardly curved portion 13 '.
  • a tongue 33 formed on the lower leg 32 is used to hold the mounting part 3 on the base plate 1 and engages with play in a recess 14 in the bent-up front part 13 of the base plate 1.
  • the helical spring 5 surrounding the punch 4 lies with one end against a shoulder formed by the annular bead 41 and is supported with its other end on the upper leg 31. In this way, the engaging in the recesses 22 of the curved rails 21 pin 42 of the punch 4 can perform a pendulum movement on the circular line during the pivoting movement of the pressure plate 2.

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)
  • Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

1. Paper perforator, having a base plate, a pressure plate swivel-mounted on cheeks of the base plate, and hole punches whose top end face is acted upon by the pressure plate and which cooperate with dies and run in pillow blocks, characterised in that on their top end face (peg 42) the hole punches (4) are mounted on the pressure plate (2) in pendulum fashion about an axis perpendicular to their longitudinal axis and that the pillow blocks (sleeves 30) form, along with a respective die (32), one-piece assembly parts (3), which are tiltably mounted on the base plate (1).

Description

BrieflocherLetter punch

Die Erfindung betrifft einen Brieflocher der im Oberbegriff des Anspruchs 1 angegebenen Gattung.The invention relates to a letter punch of the type specified in the preamble of claim 1.

Bei einem bekannten Brieflocher dieser Art (DE-OS 20 44 119) sind die für die Lochstempellagerung und -führung bestimmten Lagerböcke und Matrizen starr mit der Grundplatte verbunden. Bei der Betätigung der als einarmiger Hebel ausgebildeten Druckplatte treten daher an den Stirnflächen der Lochstempel Reibungskräfte auf, die auf die Lochstempel ein Kippmoment ausüben. Dies führt zu einem frühzeitigen Verschleiß im Lochstempelbereich.In a known letter punch of this type (DE-OS 20 44 119), the bearing blocks and matrices intended for punch mounting and guidance are rigidly connected to the base plate. When the pressure plate designed as a one-armed lever is actuated, therefore, frictional forces occur on the end faces of the punch which exert a tilting moment on the punch. This leads to premature wear in the punch area.

Der Erfindung liegt daher die Aufgabe zugrunde, den bekannten Brieflocher dahingehend zu verbessern, daß die auf den Lochstempel ausgeübten Querreibungskräfte bei der Locherbetätigung vermieden werden.The invention is therefore based on the object of improving the known letter punch in such a way that the transverse friction forces exerted on the punch are avoided when the punch is actuated.

Zur Lösung dieser Aufgabe werden die im Anspruch 1 angegebenen Merkmale vorgeschlagen. Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.To achieve this object, the features specified in claim 1 are proposed. Further advantageous refinements and developments of the invention result from the subclaims.

Der Erfindung liegt die Erkenntnis zugrunde, daß der Kraftangriffspunkt der Druckplatte auf dem Lochstempel im Verlauf eines Hubes einen Teilkreis um den Drehpunkt der Druckplatte beschreibt und daher bei senkrechter Bewegung des Lochstempels eine Querreibung auf dem Stempelkopf ausübt. Mit den erfindungsgemäßen Maßnahmen wird nun erreicht, daß die die Lochstempelführung bildenden Lagerböcke zusammen mit je einer Matrize ein einstückiges Montageteil bilden, das bei der Schwenkbewegung der Druckplatte eine geringfügige Kippbewegung ausführen kann. Die Lochstempel sind zu diesem Zweck an ihrer oberen Stirnseite beispielsweise mittels eines Zapfens um eine zu ihrer Längsachse senkrechte Achse pendelartig an der Druckplatte gelagert.The invention is based on the finding that the force application point of the pressure plate on the punch in the course of a stroke describes a pitch circle around the pivot point of the pressure plate and therefore a transverse friction on the punch when moving vertically Stamp head exercises. With the measures according to the invention it is now achieved that the bearing blocks forming the punch guide, together with a die, form an integral mounting part which can perform a slight tilting movement when the pressure plate is pivoted. For this purpose, the punches are mounted on the pressure plate on their upper end face, for example by means of a pin, about an axis perpendicular to their longitudinal axis.

Im folgenden wird die Erfindung anhand des in der Zeichnung in schematischer Weise dargestellten Ausführungsbei spiels näher erläutert.In the following, the invention is explained in more detail with reference to the embodiment shown in the drawing in a schematic manner.

Die einzige Figur zeigt einen Brieflocher in einem senkrechten Schnitt durch ein die Lochstempelfuhrung bildendes Montageteil.The only figure shows a letter punch in a vertical section through an assembly part forming the punch guide.

Der Brieflocher besteht aus einer die beiden senkrecht nach oben abgebogenen Seitenwangen 10 aufweisenden Grundplatte 1, die in ihrem vorderen, unterhalb des Einschiebschlitzes 34 gelegenen Bereich mehrfach abgebogen ist und senkrecht zu ihrer Vorderkante einen U-förmigen Querschnitt aufweist. In diesem so ausgebildeten Hohlraum 15 kann eine Schnitzelwanne angeordnet sein. Im vorderen Bereich der Seitenwangen 10 ist eine Druckplatte 2 in Lagerstellen 11 schwenkbar gelagert. An der Unterseite der Druckplatte 2 ist je eine gewölbte Schiene 21 angeordnet, die in ihrem Scheitelpunkt eine Aussparung 22 aufweist, in die ein an den Lochstempeln 4 ausgebildeter Zapfen 42 eingreift. Die Lochstempel 4 weisen in ihrem oberen Bereich einen Ringwulst 41 auf, die der Führung der Lochstempel 4 in einer zylindrischen Hülse 30 dient. Die Hülse 30 bildet zusammen mit einem an ihrem unteren Ende angeordneten, zwei Schenkel 31 und 32 aufweisenden Bügel ein einstückiges Montageteil 3. Die Aussparung 35 im oberen Schenkel 31 dient der Führung des Lochstempels 4, während die Aussparung 36 im unteren Schenkel 32 die Schnittmatrize bildet.The letter punch consists of a base plate 1 which has the two side cheeks 10 which are bent vertically upwards and which is bent several times in its front region located below the insertion slot 34 and has a U-shaped cross section perpendicular to its front edge. A chip pan can be arranged in this cavity 15 formed in this way. In the front area of the side walls 10, a pressure plate 2 is pivotally mounted in bearing points 11. On the underside of the pressure plate 2, a curved rail 21 is arranged, which has at its apex a recess 22 into which a pin 42 formed on the punch 4 engages. The punch 4 have in its upper region an annular bead 41, which serves to guide the punch 4 in a cylindrical sleeve 30. The sleeve 30 forms together with one at its lower End arranged, two legs 31 and 32 having a one-piece mounting part 3. The recess 35 in the upper leg 31 is used to guide the punch 4, while the recess 36 in the lower leg 32 forms the cutting die.

Das Montageteil 3 ruht auf dem nach oben abgebogenen vorderen Teil 13 der Grundplatte 1, der, um eine Kippbewegung des Montageteils 3 zu ermöglichen, eine nach oben gewölbte Partie 13ʹ aufweist. Zur Halterung des Montageteils 3 an der Grundplatte 1 dient eine an dem unteren Schenkel 32 ausgebildete Zunge 33, die mit Spiel in eine Aussparung 14 des hochgebogenen vorderen Teils 13 der Grundplatte 1 eingreift. Die den Lochstempel 4 umschließende Schraubenfeder 5 liegt mit ihrem einen Ende gegen eine durch den Ringwulst 41 gebildete Schulter an und stützt sich mit ihrem anderen Ende auf dem oberen Schenkel 31 ab. Auf diese Weise können die in die Aussparungen 22 der gewölbten Schienen 21 eingreifenden Zapfen 42 der Lochstempel 4 bei der Schwenkbeweg ung der Druckplatte 2 auf der Kreislinie eine Pendelbewegung ausführen. The mounting part 3 rests on the upwardly bent front part 13 of the base plate 1, which, in order to enable the mounting part 3 to tilt, has an upwardly curved portion 13 '. A tongue 33 formed on the lower leg 32 is used to hold the mounting part 3 on the base plate 1 and engages with play in a recess 14 in the bent-up front part 13 of the base plate 1. The helical spring 5 surrounding the punch 4 lies with one end against a shoulder formed by the annular bead 41 and is supported with its other end on the upper leg 31. In this way, the engaging in the recesses 22 of the curved rails 21 pin 42 of the punch 4 can perform a pendulum movement on the circular line during the pivoting movement of the pressure plate 2.

Claims (6)

1. Brieflocher mit einer Grundplatte, einer an Wangen der Grundplatte schwenkbar gelagerten Druckplatte und mit an ihrer oberen Stirnseite unter der Einwirkung der Druckplatte stehenden, mit Matrizen zusammenwirkenden und in Lagerböcken geführten Lochstempeln, dadurch gekennzeichnet, daß die Lochstempel (4) an ihrer oberen Stirnseite (Zapfen 42) um eine zu ihrer Längsachse senkrechte Achse pendelartig an der Druckplatte (2) gelagert sind und daß die Lagerböcke (Hülsen 30) zusammen mit je einer Matrize (32) einstückige Montageteile (3) bilden, die an der Grundplatte (1) kippbar gelagert sind.1. Letter punch with a base plate, a pressure plate pivotally mounted on the cheeks of the base plate and with punch punches, which cooperate with matrices and are guided in bearing blocks on their upper end face under the action of the pressure plate, characterized in that the punch punches (4) on their upper end face (Pin 42) about an axis perpendicular to their longitudinal axis are mounted in a pendulum-like manner on the pressure plate (2) and that the bearing blocks (sleeves 30) together with a die (32) form one-piece assembly parts (3) which on the base plate (1) are tiltable. 2. Brieflocher nach Anspruch 1, dadurch gekennzeichnet, daß jedes Montageteil (3) im oberen Bereich eine zylindrische Hülse (30) aufweist, die eine Schraubenfeder (5) umschließt und einer ein oberes Widerlager für die Schraubenfeder (5) bildenden Ringwulst (41) des Lochstempels (4) als Führung dient.2. letter punch according to claim 1, characterized in that each mounting part (3) in the upper region has a cylindrical sleeve (30) which encloses a coil spring (5) and an upper abutment for the coil spring (5) forming annular bead (41) the punch (4) serves as a guide. 3. Brieflocher nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jedes Montageteil (3) im unteren Bereich zu einem waagrechten Bügel gebogen ist, dessen oberer Schenkel (31) einer auf den Lochstempel einwirkenden Schraubenfeder (5) als Widerlager dient und dessen unterer, die Matrize bildender Schenkel (32) eine der Kipplagerung des Montageteils an der Grundplatte (1) dienende Zunge (14) aufweist.3. letter punch according to claim 1 or 2, characterized in that each mounting part (3) is bent in the lower region to a horizontal bracket, the upper leg (31) of a helical spring acting on the punch (5) serves as an abutment and the lower, the die-forming leg (32) has a tongue (14) serving to tilt the mounting part on the base plate (1). 4. Brieflocher nach Anspruch 3, dadurch gekennzeichnet, daß der unterhalb des unteren Schenkels (32) gelegene hochgebogene Teil (13ʹ) der Grundplatte (1) nach oben gewölbt ist und eine dem unteren Schenkel (32) als Auflage dienende Scheitellinie bildet.4. letter punch according to claim 3, characterized in that the below the lower leg (32) located high-bent part (13ʹ) of the base plate (1) upwards is curved and forms a crest line serving as a support for the lower leg (32). 5. Brieflocher nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß die am freien Rand des unteren Schenkels (32) vorgesehene Zunge (33) mit eine Kippbewegung des Montageteils (3) ermöglichendem Spiel in eine Aussparung (14) der Grundplatte (1) eingreift.5. letter punch according to one of claims 4 or 5, characterized in that the tongue provided on the free edge of the lower leg (32) (33) with a tilting movement of the mounting part (3) enabling play in a recess (14) of the base plate (1 ) intervenes. 6. Brieflocher nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß an der oberen Stirnseite der Lochstempel (4) ein Zapfen (42) vorgesehen ist, der in eine Aussparung einer an der Unterseite der Druckplatte (2) angeordneten gewölbten Schiene (21) eingreift.6. letter punch according to one of claims 1 to 5, characterized in that on the upper end face of the punch (4) a pin (42) is provided which is arranged in a recess of a on the underside of the pressure plate (2) arranged curved rail (21 ) intervenes.
EP87116370A 1986-11-20 1987-11-06 Paper punching devices Expired - Lifetime EP0268162B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116370T ATE50723T1 (en) 1986-11-20 1987-11-06 MAILHOLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863639516 DE3639516A1 (en) 1986-11-20 1986-11-20 LETTER HOLE
DE3639516 1986-11-20

Publications (2)

Publication Number Publication Date
EP0268162A1 true EP0268162A1 (en) 1988-05-25
EP0268162B1 EP0268162B1 (en) 1990-03-07

Family

ID=6314286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116370A Expired - Lifetime EP0268162B1 (en) 1986-11-20 1987-11-06 Paper punching devices

Country Status (5)

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EP (1) EP0268162B1 (en)
JP (1) JPH064238B2 (en)
AT (1) ATE50723T1 (en)
DE (2) DE3639516A1 (en)
ES (1) ES2013756B3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5730038A (en) * 1995-01-25 1998-03-24 Acco Usa, Inc. Configuration for paper punch pin
US5893313A (en) * 1995-09-05 1999-04-13 Carl Manufacturing Co., Ltd. Corner cutter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9412109U1 (en) * 1994-07-27 1994-10-06 Burger Kunststoff-Spritzgußwerk GmbH, 78048 Villingen-Schwenningen Paper punch
CN103846965B (en) * 2014-03-12 2016-07-20 宁波得力装订设备有限公司 Labor-saving hole-punching machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485130A (en) * 1967-05-09 1969-12-23 Arnold Neustadter Paper centering means for paper punch
FR2523026A1 (en) * 1982-03-12 1983-09-16 Wilson Jones Co MECHANICAL PERFORATOR, IN PARTICULAR FOR PAPER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2044119A1 (en) * 1970-09-05 1972-03-09 Fa. Louis Leitz, 7000 Stuttgart Letter punch
DE3326479C2 (en) * 1983-07-22 1985-06-05 Brause GmbH & Co, 5860 Iserlohn Letter punch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485130A (en) * 1967-05-09 1969-12-23 Arnold Neustadter Paper centering means for paper punch
FR2523026A1 (en) * 1982-03-12 1983-09-16 Wilson Jones Co MECHANICAL PERFORATOR, IN PARTICULAR FOR PAPER
DE3230745A1 (en) * 1982-03-12 1983-09-22 Wilson Jones Co., Chicago, Ill. PAPER HOLE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5730038A (en) * 1995-01-25 1998-03-24 Acco Usa, Inc. Configuration for paper punch pin
US5893313A (en) * 1995-09-05 1999-04-13 Carl Manufacturing Co., Ltd. Corner cutter

Also Published As

Publication number Publication date
EP0268162B1 (en) 1990-03-07
DE3639516A1 (en) 1988-06-01
JPS63139695A (en) 1988-06-11
DE3761803D1 (en) 1990-04-12
ES2013756B3 (en) 1990-06-01
JPH064238B2 (en) 1994-01-19
ATE50723T1 (en) 1990-03-15

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