GB1469100A - Die assemblies including spring strippers - Google Patents

Die assemblies including spring strippers

Info

Publication number
GB1469100A
GB1469100A GB5853573A GB5853573A GB1469100A GB 1469100 A GB1469100 A GB 1469100A GB 5853573 A GB5853573 A GB 5853573A GB 5853573 A GB5853573 A GB 5853573A GB 1469100 A GB1469100 A GB 1469100A
Authority
GB
United Kingdom
Prior art keywords
spring
cage
flange
plunger
spring assemblies
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
Application number
GB5853573A
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.)
Dayton Progress Corp
Original Assignee
Dayton Progress Corp
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 Dayton Progress Corp filed Critical Dayton Progress Corp
Publication of GB1469100A publication Critical patent/GB1469100A/en
Expired legal-status Critical Current

Links

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
    • 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
    • Y10T83/2144—Single stripper operative upon plural tools
    • 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
    • Y10T83/2155—Stripper biased against product
    • Y10T83/2159—By spring means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

1469100 Strippers DAYTON PROGRESS CORP 18 Dec 1973 [15 Jan 1973] 58535/73 Heading B3W [Also in Division F2] In punching apparatus a stripper plate 14 is suspended from a die shoe 11 by means of hanger devices 24 each comprising a screw 25 threaded in the plate 14 and having a head 30 resting on a flange 27 of a sleeve 26. Stripper spring assemblies 38 each comprise a spring 46 contained in a cage 44 between a flange 31 and a shoulder 50, of a plunger 48, which abuts a flange 29 of the cage. The dimensions of the spring assemblies and hanger devices are chosen so that the cage or plunger apply a preload to the spring but in the open position of the punching apparatus the spring assemblies apply no stress to the stripper plate or to the plate supports means 25, 26. During punching, the die shoe engages the heads 35 of the plungers 48 and when the stripper plate engages the workpiece, on which it acts as a hold down, compresses the spings 46, the cages entering further into recesses 40 in the die shoe 11. When punches 22 have to be ground, the sleeves 26 and plunger heads 35 are found and the screws 25 adjusted correspondingly. More than one spring may be housed in a cage and the springs may be of different ratings, e.g. to give light pressure initially and heavier pressure towards the end of a punch stroke. The spring assemblies can be used in inverted position.
GB5853573A 1973-01-15 1973-12-18 Die assemblies including spring strippers Expired GB1469100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00323955A US3848496A (en) 1973-01-15 1973-01-15 Die and spring assemblies having particular application to stripper plates

Publications (1)

Publication Number Publication Date
GB1469100A true GB1469100A (en) 1977-03-30

Family

ID=23261436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5853573A Expired GB1469100A (en) 1973-01-15 1973-12-18 Die assemblies including spring strippers

Country Status (8)

Country Link
US (1) US3848496A (en)
JP (1) JPS49103286A (en)
AU (1) AU6271273A (en)
CA (1) CA1003744A (en)
DE (1) DE2361845A1 (en)
GB (1) GB1469100A (en)
IL (1) IL43631A0 (en)
IT (1) IT997671B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901111A (en) * 1974-04-25 1975-08-26 Oberg Manufacturing Co Inc Stripper plate spring unit
JPS5560233U (en) * 1978-10-16 1980-04-24
JPH0452105A (en) * 1990-06-20 1992-02-20 Ngk Insulators Ltd Punching mold for ceramic green sheet
US5131303A (en) * 1991-08-12 1992-07-21 Wilson Tool International Punch assembly
US5329835A (en) * 1992-10-07 1994-07-19 Wilson Tool International, Inc. Adjustable length punch set assembly
US5839341A (en) * 1996-04-12 1998-11-24 Mate Precision Tooling Punch unit
US5927140A (en) * 1997-12-16 1999-07-27 The Whitaker Corporation Tool accelerator
US6513411B2 (en) * 2000-12-20 2003-02-04 Hon Hai Precision Ind. Co., Ltd. Die block assembly with clearance protection mechanism
US6755110B2 (en) * 2001-06-19 2004-06-29 Wilson Tool International, Inc. Adjustable length punch assembly
WO2005019035A1 (en) * 2003-08-20 2005-03-03 Texa Ag Method and device for packing tubes
JP2008290222A (en) * 2007-05-28 2008-12-04 Kyoei Print Giken Kk Combination die for pressing
CN102836922B (en) * 2012-09-29 2016-05-25 无锡市亚青机械厂 A kind of machine oil cover piercing and flanging mould that loads
CN104338828B (en) * 2013-08-07 2016-07-13 江苏博俊工业科技股份有限公司 The anti-punching die that fractures of aperture drift
CN103480715B (en) * 2013-09-06 2015-07-22 珠海元盛电子科技股份有限公司 Pre-pressed pipe position forming die
CN114798899B (en) * 2021-04-09 2023-12-01 广州市鑫嘉宝精密模具有限公司 Punching positioning device die
CN113210492A (en) * 2021-05-25 2021-08-06 成都宏明双新科技股份有限公司 High-precision product blanking and conveying die

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579641A (en) * 1947-10-14 1951-12-25 Motor Wheel Corp Spring unit for stripper devices
JPS3413828Y1 (en) * 1957-06-21 1959-09-03
US3418839A (en) * 1965-10-22 1968-12-31 Richard E. Hlavac Stripper plate bolt assembly for a die set

Also Published As

Publication number Publication date
AU6271273A (en) 1975-05-22
CA1003744A (en) 1977-01-18
US3848496A (en) 1974-11-19
IL43631A0 (en) 1974-03-14
JPS49103286A (en) 1974-09-30
DE2361845A1 (en) 1974-10-03
IT997671B (en) 1975-12-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee