EP2374555A1 - Stanzstempel mit Abstreifvorrichtung - Google Patents

Stanzstempel mit Abstreifvorrichtung Download PDF

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Publication number
EP2374555A1
EP2374555A1 EP11158150A EP11158150A EP2374555A1 EP 2374555 A1 EP2374555 A1 EP 2374555A1 EP 11158150 A EP11158150 A EP 11158150A EP 11158150 A EP11158150 A EP 11158150A EP 2374555 A1 EP2374555 A1 EP 2374555A1
Authority
EP
European Patent Office
Prior art keywords
punch
transmission means
mould
motion transmission
stripper
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.)
Withdrawn
Application number
EP11158150A
Other languages
English (en)
French (fr)
Inventor
Armenio Scattolon
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2374555A1 publication Critical patent/EP2374555A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
    • B21D45/006—Stripping-off devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/32—Perforating, i.e. punching holes in other articles of special shape

Definitions

  • the present invention relates to a mould that operates a relative device for processing metal sheets that may be formed by various methods, as they could be deep-drawn, flat, etc., and as portions of plate, and performs on them a particular operation, typically a punching action carried out using a suitable punch with a stripper, as is commonly defined in the relative field of technology.
  • a motion transmission element 8 provided with a substantially vertical slot 9, and constrained with one face 8A at one side (right) of said hollow cylinder 4;
  • said chamber 6, which forms the elastic element may contain a mass of gas, or a coiled wire spring.
  • said end 12 and its pin 14 are pushed with a movement that also comprises a horizontal component; since said pin 14 is engaged and housed in said slot 9, the vertical component of its movement is neutralized by the vertical play offered by the slot 9, while its horizontal component acts upon and pushes said element 8.
  • the overall dimensions and therefore the size of the above devices depend substantially on the fact that the stripper (with the relative punch) and the spring element are located geometrically in series with each other, on the basis of the consideration that the force produced by the press must be received by both said spring element and the stripper, on both of which it must be able to act.
  • a mould comprising mainly a frame stably connected to a punch and a relative stripper with which it is usually associated, built and operating according to the appended claims.
  • the mould includes:
  • Said motion transmission means 18 and stripper 22 are joined to each other, and move according to a common and definite direction of movement "X" and reciprocally in the two movement directions, as their motion is guided by said frame 21.
  • the stripper/punch assembly 22 is directly inserted, said assembly being itself known from Italian Patent (Application) No. PN 2008A00005 , and from Patent WO 2008/055631 A1 , referred to herein for the sake of brevity.
  • the stripper is understood as being included in the components circled together and identified by number 22.
  • the stripper is not involved in the present invention, even though the invention aims at achieving a better use of the same, and therefore no particular description of the stripper will be provided.
  • the mould dramatically reduces its dimension in the direction of operation of the stripper, as it completely eliminates the space previously taken up by the spring and the relative connected devices, like the chamber 6, the hollow cylinder 4, etc.
  • Said spring may be made in various ways known in the art, and therefore it can be achieved by inserting a wire coil spring, a gas-driven spring, etc.
  • the body of the cylinder 40 can be obtained by simply forming it within a wall of said frame 21, while the sliding rod 41 is positioned and remains apt to engage on a corresponding side 42 of a suitable frontal portion 29, itself also but not necessarily projecting, of the motion transmission element 18 ( Fig. 10 ); this solution is preferred if a further reduction of the size of the frame 21 in general is desired, because in this way it is not necessary to reserve and take up any additional volume in which to house the gas spring.
  • FIGS. 5 through 8 illustrate in fact respective phases of operation of the mould of the invention, and of the respective stripper.
  • a problem may arise in relation to the position of the stripper.
  • said stripper 22 must not be able to rotate or move generally with respect to the mould, or to a fixed reference.
  • a precision alignment means preferably a pin 28 or an equivalent element, is inserted between the two mating faces 18A of said motion transmission element and said ring-shaped flat face 25 of the hollow cylindrical body 24.
  • Such a pin 28 must not be confused with other connection means, such as for example screws, bolts or similar devices, which must not in any case be inserted between said two mating faces 18A and 25 for the obvious need of guaranteeing that during the return travel said motion transmission element 18 does not also pull with it the relative stripper 22.
  • a useful improvement of the invention consists of forming said driving means 18 in the shape of an asymmetric wedge, that is, one having as its lower side a flat surface 19A, inclined at an angle "b" with respect to said direction of movement "X".
  • the back side also, here identified with 19B, of said motion transmission means 18, is in turn correspondingly inclined by the same angle "b", and is dimensioned and positioned in such a manner that said two sides 19A and 19B match each other, being also arranged on a common plane "Y".
  • a force component is determined and acts on this in alignment with said defined direction of movement "X" of the same means 18 and consequently of the stripper 22; thus as a final result said force component urges and therefore causes the movement of the means 18 and the relative stripper 22 in said desired direction "X".

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Thermistors And Varistors (AREA)
EP11158150A 2010-04-09 2011-03-14 Stanzstempel mit Abstreifvorrichtung Withdrawn EP2374555A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPN2010A000021A IT1399541B1 (it) 2010-04-09 2010-04-09 Stampo perfezionato per estrattore di punzoni

Publications (1)

Publication Number Publication Date
EP2374555A1 true EP2374555A1 (de) 2011-10-12

Family

ID=42751976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11158150A Withdrawn EP2374555A1 (de) 2010-04-09 2011-03-14 Stanzstempel mit Abstreifvorrichtung

Country Status (2)

Country Link
EP (1) EP2374555A1 (de)
IT (1) IT1399541B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2985203A1 (fr) * 2012-01-04 2013-07-05 Peugeot Citroen Automobiles Sa Outillage pour presse d'emboutissage a transfert a ventouses comportant un dispositif a coulisseau
EP2952269A1 (de) * 2014-06-06 2015-12-09 Peugeot Citroën Automobiles Sa Vorrichtung zum sichern eines schiebers eines presswerkzeugs, der zwischen einer zurückgesetzten position und einer arbeitsposition beweglich montiert ist
DE202020103550U1 (de) 2019-06-20 2020-06-26 Armenio Scattolon Verbessertes Werkzeug für einen Abstreifer für Stempel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779113A (en) * 1971-03-04 1973-12-18 P Jestin Punching unit
US5899110A (en) * 1997-12-01 1999-05-04 Reo Hydraulic Pierce & Form, Inc. Pivoting fabricating apparatus with a linear action
EP1520638A1 (de) * 2003-10-02 2005-04-06 Umix Co., Ltd. Stanznocke
EP1547703A1 (de) * 2003-12-22 2005-06-29 Umix Co., Ltd. Abstreifvorrichtung für Stanzstempel
WO2008055631A1 (en) 2006-11-06 2008-05-15 Strömsholmen Ab Punch stripper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779113A (en) * 1971-03-04 1973-12-18 P Jestin Punching unit
US5899110A (en) * 1997-12-01 1999-05-04 Reo Hydraulic Pierce & Form, Inc. Pivoting fabricating apparatus with a linear action
EP1520638A1 (de) * 2003-10-02 2005-04-06 Umix Co., Ltd. Stanznocke
EP1547703A1 (de) * 2003-12-22 2005-06-29 Umix Co., Ltd. Abstreifvorrichtung für Stanzstempel
WO2008055631A1 (en) 2006-11-06 2008-05-15 Strömsholmen Ab Punch stripper

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2985203A1 (fr) * 2012-01-04 2013-07-05 Peugeot Citroen Automobiles Sa Outillage pour presse d'emboutissage a transfert a ventouses comportant un dispositif a coulisseau
EP2952269A1 (de) * 2014-06-06 2015-12-09 Peugeot Citroën Automobiles Sa Vorrichtung zum sichern eines schiebers eines presswerkzeugs, der zwischen einer zurückgesetzten position und einer arbeitsposition beweglich montiert ist
FR3021884A1 (fr) * 2014-06-06 2015-12-11 Peugeot Citroen Automobiles Sa Dispositif pour securiser le coulisseau d'un outil de presse, monte mobile entre une position reculee et une position de travail
DE202020103550U1 (de) 2019-06-20 2020-06-26 Armenio Scattolon Verbessertes Werkzeug für einen Abstreifer für Stempel

Also Published As

Publication number Publication date
ITPN20100021A1 (it) 2011-10-10
IT1399541B1 (it) 2013-04-19

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