GB1117398A - Safety device for a stamping machine - Google Patents

Safety device for a stamping machine

Info

Publication number
GB1117398A
GB1117398A GB1574867A GB1574867A GB1117398A GB 1117398 A GB1117398 A GB 1117398A GB 1574867 A GB1574867 A GB 1574867A GB 1574867 A GB1574867 A GB 1574867A GB 1117398 A GB1117398 A GB 1117398A
Authority
GB
United Kingdom
Prior art keywords
piston
thrust
pin
punch
press
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
GB1574867A
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.)
Heinrich Schmid Firma
Original Assignee
Heinrich Schmid 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
Priority to CH549466A priority Critical patent/CH437970A/en
Application filed by Heinrich Schmid Firma filed Critical Heinrich Schmid Firma
Publication of GB1117398A publication Critical patent/GB1117398A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D55/00Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/081With randomly actuated stopping means
    • Y10T83/086With sensing of product or product handling means
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/202With product handling means
    • Y10T83/2092Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096Means to move product out of contact with tool
    • Y10T83/2122By ejector within a hollow cutter
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/202With product handling means
    • Y10T83/2092Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096Means to move product out of contact with tool
    • Y10T83/2122By ejector within a hollow cutter
    • Y10T83/2133By resiliently biased ejector
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8821With simple rectilinear reciprocating motion only
    • Y10T83/8828Plural tools with same drive means
    • Y10T83/8831Plural distinct cutting edges on same support

Abstract

1,117,398. Punching. H. SCHMID. 6 April, 1967 [15 April, 1966], No. 15748/67. Heading B3W. A safety device, for a blanking and piercing press having at least two piercing punches cooperating with die openings formed in the blanking punch, piston operated ejector pins operating in each die opening and a travel limiting stop for the piston, comprises an intermediate member between the piston and the pins which can be moved relative to the pins to a predetermined rest position if the die openings are clear, means for determining whether the intermediate member is in its rest position and a control switch operated by said means where. by the press is stopped if the intermediate member is not in the rest position at the end of a press cycle. The press comprises a fixed platen 10 and an up-stroking ram 21, which carries a die 23 and two piercing punches 30, which pass through a plate 29 and rest on a block 28. An ejector 24 is secured by guide rods 25 to a counter-ram 26. The punch 11 is fixed in the platen 10 and is surrounded by a hold-down 13 which has an annular V-section projection 14, and is connected by rods 15 to a disc-shaped thrust member 16 which is slidable within a thrust ring 18 fixed in the platen. Each of the die openings 31 in the punch 11 contains an ejector pin 32, the upper ends of which bear against the thrust member 16, and the downward movement of which is limited by a shoulder on the pin engaging the top surface of the punch 11. A cylinder 35 mounted on the upper surface of the platen 10 contains a piston 36, and between the piston and the thrust member 16 is the intermediate member 37. The downward movement of the piston is limited by a shoulder 38. The total axial length of the thrust and intermediate members is such that they have a limited movement " K ". Gravity and a spring 39 bias the parts downwardly. The intermediate member 37 is loosely coupled to the piston 36 by a pin and screw 40, 41. A groove 45 round the intermediate member has inclined sides and receives the rounded end of a spring-loaded pin 46. A conical shoulder 49 on the pin engages the actuating roller 50 of an electric switch 52. Operation.-A workpiece S is blanked from a strip M by upward movement of the ram 21, the counter-ram 26 remaining stationary during the first part of the movement. Simultaneously the punches 30 pierce the work. As the punch penetrates the strip, the hold-down 13 is moved upwardly relative to the punch and lifts the thrust member 16 and the intermediate member 37, so that the pin 46 is displaced horizontally and actuates the switch 52. At this stage of the press-cycle the actuation of the switch does not stop the press. The ejector pins 32 are able to move upwards in the die openings, to receive the piercing slugs, due to the upward movement of the thrust member 16. The ram 21 retracts and the part S is ejected by upward movement of the counter-ram 26. Pressure fluid admitted above the piston 36 moves it downwards against the stop 38, moving with it the thrust member 16 and the hold-down 13 which strips the webbing off the punch. The ejector pins are also actuated to clear the dieopenings and provided that this is effected properly the intermediate member 37 is then able to move down freely to its predetermined rest position in which the end of the pin 46 enters the groove 44. If for any reason the ejector pins jam the intermediate member maintains the pin 46 in a position to actuate the switch 52 and this prevents a control signal being emitted which would enable the press to continue running.
GB1574867A 1966-04-15 1967-04-06 Safety device for a stamping machine Expired GB1117398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH549466A CH437970A (en) 1966-04-15 1966-04-15 Safety device on a punching machine

Publications (1)

Publication Number Publication Date
GB1117398A true GB1117398A (en) 1968-06-19

Family

ID=4294529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1574867A Expired GB1117398A (en) 1966-04-15 1967-04-06 Safety device for a stamping machine

Country Status (8)

Country Link
US (1) US3440909A (en)
AT (1) AT263501B (en)
BE (1) BE696922A (en)
CH (1) CH437970A (en)
DE (1) DE1602567B2 (en)
ES (1) ES339353A1 (en)
GB (1) GB1117398A (en)
SE (1) SE307053B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4889073U (en) * 1972-01-28 1973-10-26
US4046040A (en) * 1976-07-06 1977-09-06 Bourdo Charles A Progressive die sensor
GB1596641A (en) * 1977-02-25 1981-08-26 Avdel Ltd Fault detector for a metal-forming machine
DE2726201A1 (en) * 1977-06-10 1978-12-21 Smg Sueddeutsche Maschinenbau DEVICE FOR PROTECTING A SET OF TOOLS IN A HYDRAULIC PRESS
CH659009A5 (en) * 1983-06-09 1986-12-31 Hydrel Ag Device for finely cutting windows in a ball cage.
US4813320A (en) * 1987-08-11 1989-03-21 Oberg Industries, Inc. Method and apparatus for detecting a sheet strip material misfeed condition
US5091962A (en) * 1987-08-11 1992-02-25 Oberg Industries, Inc. Method and apparatus for detecting a sheet strip material misfeed condition
US4855606A (en) * 1987-08-12 1989-08-08 Oberg Industries, Inc. Method and apparatus for detecting a misfeed in a stamping press
US4809576A (en) * 1987-08-25 1989-03-07 Amp Incorporated Scrap removal system for stamping and forming machine and sensor apparatus for detecting movement between conveyor belts
US4774865A (en) * 1987-09-22 1988-10-04 Wallis Bernard J Die stamping system
US4934230A (en) * 1988-08-24 1990-06-19 Wallis Bernard J Die stamping system
US7093526B2 (en) * 1999-05-20 2006-08-22 Honda Giken Kogyo Kabushiki Kaisha Forming die apparatus
JP2003117618A (en) * 2001-10-16 2003-04-23 Aida Eng Ltd Device and method for detecting refuse rising
US7171882B2 (en) * 2003-10-15 2007-02-06 Amros Industries, Inc. Knife-like cutting die
CN102000748B (en) * 2010-10-21 2012-05-30 武汉一冶钢结构有限责任公司 Anti-eccentricity pressing piston rod connecting device of no-guiding slider type hydraulic press
CN103878247B (en) * 2014-03-13 2015-11-04 陕西科技大学 A kind of toggle link punch press guider
CN104289625A (en) * 2014-08-28 2015-01-21 宁波鸿达电机模具有限公司 Fault detection mechanism for progressive die of motor core
CN108435887A (en) * 2018-03-22 2018-08-24 汪贤女 A kind of new alloy material device
CN108213184A (en) * 2018-03-22 2018-06-29 徐萍 A kind of punching apparatus
CN108890734A (en) * 2018-08-27 2018-11-27 安徽千载佳科技有限公司 One kind is for cutting lithium battery diaphragm cutter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589849A (en) * 1947-08-18 1952-03-18 Oetiker Hans Punching machine
US2970503A (en) * 1956-03-02 1961-02-07 Ebauches Sa Punch tool drive means yieldable upon undue thickness of material being punched
GB1005517A (en) * 1964-01-14 1965-09-22 Ncr Co Improvements in or relating to power operated stamping machines

Also Published As

Publication number Publication date
DE1602567A1 (en) 1969-12-18
SE307053B (en) 1968-12-16
ES339353A1 (en) 1968-05-01
CH437970A (en) 1967-06-15
US3440909A (en) 1969-04-29
AT263501B (en) 1968-07-25
BE696922A (en) 1967-09-18
DE1602567B2 (en) 1971-12-09

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