EP2442952B1 - .a hollow punch for processing leather and a system for removably blocking the hollow punch to a shaft of a machine for processing leather - Google Patents

.a hollow punch for processing leather and a system for removably blocking the hollow punch to a shaft of a machine for processing leather Download PDF

Info

Publication number
EP2442952B1
EP2442952B1 EP10771194A EP10771194A EP2442952B1 EP 2442952 B1 EP2442952 B1 EP 2442952B1 EP 10771194 A EP10771194 A EP 10771194A EP 10771194 A EP10771194 A EP 10771194A EP 2442952 B1 EP2442952 B1 EP 2442952B1
Authority
EP
European Patent Office
Prior art keywords
shank
seating
punch
hollow punch
wall
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.)
Not-in-force
Application number
EP10771194A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2442952A1 (en
Inventor
Gianni Gallucci
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.)
Teseo SpA
Original Assignee
Teseo SpA
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 Teseo SpA filed Critical Teseo SpA
Priority to PL10771194T priority Critical patent/PL2442952T3/pl
Publication of EP2442952A1 publication Critical patent/EP2442952A1/en
Application granted granted Critical
Publication of EP2442952B1 publication Critical patent/EP2442952B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • 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
    • B26F1/16—Perforating by tool or tools of the drill type
    • 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

Definitions

  • Removable blocking systems of a hollow punch to a shaft are known in the prior art, and comprise mechanical blocking of the punch in a seating provided at an end of the drive shaft.
  • Such a system is known from US-A-1,809,553 upon which the preamble is based.
  • a further blocking system of known type of a punch to a shaft is illustrated in figure 2 , and comprises: a seating 11 afforded in the terminal part 150 of the shaft 10 for receiving a corresponding shank 12 of a punch 13; and a grubscrew 15 insertable internally of a threaded hole 14 having a radial development and afforded in the terminal part 150 of the shaft 10 and opening internally of the seating 11.
  • the possibility of retaining the punch in the seating by magnetic force of attraction advantageously enables, when the shank of the punch has been inserted in the seating and the point of the punch has been contacted on a piece sample leather or a portion of the semifinished piece itself, joint-engaging the recess and the blocking element by simple rotation of the shaft; this advantageously enables engaging/disengaging the punch to/from the shaft by a sequence of operation which can be easily performed by an operator or any automatic punch-changing system.
  • the blocking element 23 has a substantially cylindrical shape and can be fixed to the inside of the seating 31 for example by mechanical interference with the through-hole 24 it engages with; this cylindrical element 23 is fixed to the internal lateral wall 38 of the seating 31 below the permanent magnet 32.
  • the advantage of the present invention consists in having made available a blocking system of a punch to a shaft of an automatic leather-working machine which obviates the drawbacks in known-type solutions, outlined in the preamble hereto, enabling a rapid and simple engagement and disengagement of the punch with the shaft by acting exclusively and directly on the punch by means of operations which can be easily performed by an operator or an automatic punch-changing device.
  • the blocking system has the recess 25 and cylindrical element 23 reciprocally dimensioned such that the coupling realised between the recess 25 and the cylindrical element 23 enables, in the removable blocking configuration (illustrated in figure 10 ), the punch 21 to be axially blocked in the seating 31 and blocked with respect to a rotation in the predetermined rotation direction W, thus preventing any possible of relative axial and angular movement in the predetermined rotation direction W between the punch 21 and the seating 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Knives (AREA)
  • Threshing Machine Elements (AREA)
  • Scissors And Nippers (AREA)
EP10771194A 2009-09-29 2010-09-27 .a hollow punch for processing leather and a system for removably blocking the hollow punch to a shaft of a machine for processing leather Not-in-force EP2442952B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10771194T PL2442952T3 (pl) 2009-09-29 2010-09-27 Wydrążony stempel do obróbki skóry i system do rozłącznego blokowania wydrążonego stempla na wale maszyny do obróbki skóry

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO2009A000626A IT1395812B1 (it) 2009-09-29 2009-09-29 Fustella per la lavorazione di pelli e sistema per il bloccaggio amovibile della stessa ad un albero di una macchina per la lavorazione di pelli
PCT/IB2010/054348 WO2011039696A1 (en) 2009-09-29 2010-09-27 .a hollow punch for processing leather and a system for removably blocking the hollow punch to a shaft of a machine for processing leather

Publications (2)

Publication Number Publication Date
EP2442952A1 EP2442952A1 (en) 2012-04-25
EP2442952B1 true EP2442952B1 (en) 2013-04-03

Family

ID=42145140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10771194A Not-in-force EP2442952B1 (en) 2009-09-29 2010-09-27 .a hollow punch for processing leather and a system for removably blocking the hollow punch to a shaft of a machine for processing leather

Country Status (7)

Country Link
EP (1) EP2442952B1 (es)
BR (1) BR112012000675A2 (es)
ES (1) ES2417321T3 (es)
IT (1) IT1395812B1 (es)
PL (1) PL2442952T3 (es)
PT (1) PT2442952E (es)
WO (1) WO2011039696A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112959413B (zh) * 2021-02-03 2021-11-02 东莞市朗明精密机械科技有限公司 一种pcb钻孔机用机械手
CN113182453A (zh) * 2021-04-21 2021-07-30 陕西法士特汽车传动集团有限责任公司 一种顶出结构及复合模
DE102021134528B3 (de) 2021-12-23 2023-06-29 Alfra Gmbh Stanzwerkzeug für den mobilen Einsatz
FR3135409B1 (fr) * 2022-05-13 2024-06-21 Lectra Dispositif de maintien d’une lame vibrante sur un porte-lame d’une machine de coupe et lame destinée à coopérer avec un tel dispositif

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1638261A (en) * 1925-08-08 1927-08-09 Henricson Edwin Holder for punches or other tools
US1809553A (en) * 1926-03-25 1931-06-09 Edith P Graul Tool holder
US2348380A (en) * 1943-07-19 1944-05-09 Graham Frank Benjaman Punch
US2371565A (en) * 1944-06-21 1945-03-13 Lawrence V Whistler Punch and die mechanism
US5094134A (en) 1990-06-08 1992-03-10 Roland Dg Corporation Cutting pen
CH696194A5 (de) * 2000-09-13 2007-02-15 Trueb Ag Verfahren zur Herstellung von Karten aus Kunststoff, Identitätskarte oder Kreditkarte hergestellt nach dem Verfahren und Kartenstanzmaschine zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
BR112012000675A2 (pt) 2016-02-10
PT2442952E (pt) 2013-07-09
ITBO20090626A1 (it) 2011-03-30
PL2442952T3 (pl) 2013-11-29
ES2417321T3 (es) 2013-08-07
WO2011039696A1 (en) 2011-04-07
IT1395812B1 (it) 2012-10-26
EP2442952A1 (en) 2012-04-25

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