US3921887A - Process for continuously processing a web or strip material in a press - Google Patents

Process for continuously processing a web or strip material in a press Download PDF

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Publication number
US3921887A
US3921887A US496217A US49621774A US3921887A US 3921887 A US3921887 A US 3921887A US 496217 A US496217 A US 496217A US 49621774 A US49621774 A US 49621774A US 3921887 A US3921887 A US 3921887A
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US
United States
Prior art keywords
press
die
unit assembly
die unit
assembly
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 - Lifetime
Application number
US496217A
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English (en)
Inventor
Toshinori Maehara
Yoshinobu Kimura
Hirotoku Takeuchi
Masao Takegami
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.)
Aida Engineering Ltd
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Aida Engineering Ltd
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 Aida Engineering Ltd filed Critical Aida Engineering Ltd
Application granted granted Critical
Publication of US3921887A publication Critical patent/US3921887A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • B21D37/145—Die storage magazines
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/10—Process
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1729—Reciprocating tool machine tool [e.g., broaching machine, shaping machine, etc.]
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8748—Tool displaceable to inactive position [e.g., for work loading]

Definitions

  • This invention relates to a continuous pressing process for a web or strip material and more particularly, to a continuous pressing process for a web or strip material in which a web or strip material is continuously pressed by a die assembly comprising upper and lower die units each unit having a series of upper and lower cooperating dies for effecting successive pressing steps as the material is intermittently fed in a cycle of pressing operation to produce products in succession.
  • Some dies were designed not to provide scraps on the discharge side of a press and when the extreme ends of a material were to be treated in such dies, the semi-manufactured product could not be automatically moved on both the feed side and discharge side of the press and in consequence, the material had to be manually fed in increment and processed through successive processing stages and the pulling out of the manufactured product also had to be manually effected.
  • such manual procedure was a time consuming procedure.
  • one object of the present invention is to provide a continuous pressing process for a web or strip material which can effectively eliminate the disadvantages inherent in the prior art continuous pressing processes referred to above.
  • Another object of the present invention is to provide a continuous pressing process for a web or strip material which is especially advantageous when a small number of identical products are produced by a single set of upper and lower die assembly and the frequency of die exchange is great in a cycle of pressing operation.
  • Another object of the present invention is to provide a continuous pressing process for a web or strip material which requires only a brief time in preparing for the pressing operation in the production of each type of product does not require any skilled hand and can eliminate hazard which may otherwise occur when the material is manually fed.
  • a further object of the present invention is to provide a continuous pressing process for a web or strip material which can eliminate the application of a biassing load on the slide when the material is precessed both at the leading and trailing ends to thereby eliminate damage on the dies which may be otherwise inevitable.
  • a process for continuously pressing a web or strip material in a press in which an upper and a lower die unit assembly each unit including a series of aligned dies arranged in a line is employed for successively processing the material while the material is being fed in increment through successive pressing steps from one side of the press toward the other side of the press where the pressed product is discharged, characterized by that after the product which had been processed in the final pressing step has been discharged from said other side of the press leaving a semimanufactured portion of the material held between the upper and lower die units of the die assembly, the semimanufactured material portion is sheared off the remaining portion of the material in a position at a distance from the feed side of the die unit assembly with a section of the material connected to the semimanufactured portion projecting from the die unit assembly, the unit assembly having the sheared semimanufactured material portion held therein is removed from the body of said press and carried to a die storage by a die exchanger to be s
  • FIG. 1 is a fragmentary front elevational view of said press
  • FIG. 2 is a fragmentary top plan view of said press a die exchanger and a die storage
  • FIG. 3 is an elevational view of one die assembly comprising upper and lower dies in pairs having a semimanufactured product held therebetween.
  • character reference 8 denotes a bolster
  • character reference S denotes a slide movable toward and away from the bolster B
  • reference numeral 1 denotes an upper die unit comprising a plurality of aligned upper dies
  • reference numeral 2 denotes a lower die unit comprising a plurality of aligned lower dies which cooperate with the mating upper dies of the upper die unit 1, respectively, for performing different process steps on a material
  • Character reference D denotes a die assembly including the upper and lower die units 1 and 2.
  • the upper and lower die units I and 2 include a series of separate upper dies 0, b, c and d and a series of separate lower dies a, b, c and d, respectively, which are arranged in a line in their associated die unit and which cooperate with each other for performing different processing steps on a material being fed in timed relationship with the intermediate feed of the material and with the advancing stroke of the slide in a cycle of processing operation in the press.
  • Reference numeral 3 denotes a material in the form of a web or strip to be processed in the press and the material is adapted to be intermittently fed in increment to and through the processing zone defined by the bolster B and slide S by feed means 4 conventionally disposed along the path of the material 3 in front of the processing Zone and conventionally including a leveller, pinch rolls, a loop controller and feed rolls.
  • the shearing means 5 and jointing means 6 are adapted to be operated alternately in the same zone along the path of the material 3.
  • the searing means 5 is movable between the solid line position and phantasm line position (FIG. 2) in the direction of the path of the material 3 being fed while the jointing means 6 is movable between the solid line position and phantasm line position in a direction transverse of the path of the material 3 (FIG. 2).
  • the jointing means 6 when it is desired to shear the material 3, the jointing means 6 is first moved to the solid line position laterally of the path of the material and the shearing means 5 is then moved to the phantasm line position. Thereafter, the shearing blades of the shearing means 5 are actuated to shear the material.
  • the shearing means 5 when it is desired to perform a material jointing operation, the shearing means 5 is first moved to the solid line position and the jointing means 6 is then moved to the phantasm line position. Thereafter, the jointing means 6 is actuated for performing a material jointing operation.
  • the jointing means may be any conventional butt-joint welding device or brazing device.
  • Character reference 7 denotes a die exchanger which is disposed on one side of the path of the material 3 adjacent to the bolster B and adapted to move between the die assembly receiving position and die assembly discharge position in which the die exchanger 7 discharges a particular die assembly into a conventional die storage 8 positioned at a distance from one side of the bolster B.
  • the storage 8 is adapted to receive and hold a plurality of different types of die assemblies which are adapted to be employed for different patterns of pressing on the material 3 and the die exchanger 7 is adapted to pull a selected die assembly out of the plurality of die assemblies within the storage 8 and feed the selected die assembly to the pressing zone.
  • a selected die assembly is positioned in the processing zone with the lower die unit 2 of the assembly secured to the bolster B by means of clamps 9 and the upper die unit 1 of the same assembly is secured by means of similar clamps to the slide S which is disposed above the bolster B.
  • the material 3 is intermittently fed into the press by the feed means 4 with the slide S maintained in its retracted position with respect to the bolster B until a section of the material 3 extending rearwardly of the leading end of the material (the section will be referred as first section hereinafter) is disposed between the first pair of upper and lower dies a and a whereupon the feeding of the material is stopped and the slide S is moved in its advancing stroke toward the bolster B whereby the first pair of dies a and 0' effect a first step of pressing on the first section in a cycle of pressing operation.
  • the slide S is retracted from the bolster B and the feeding of the material 3 is then resumed to advance the material until the first section thereof which has been processed by the first pair of dies a and a is positioned between the second pair of dies b and b and a section of the material following the first section (the following section will be called as second section hereinafter) is positioned between the first pair of dies 0 and a, respectively, whereupon the feeding of the material is stopped. Thereafter, the slide S is advanced to cause the second and first pairs of dies b and b and a and a to effect second and first steps of pressing on the material sections in the cycle of operation.
  • the slide S is retracted from the bolster B and the feeding of the material is resumed until the first section is positioned between the third pair of dies 0 and c, the second section is positioned between the second pair of dies b and b and a section following the second section (the section will be referred to as third section hereinafter) is positioned between the first pair of dies a and a, respectively, whereupon the feeding of the material is stopped.
  • the slide S is advanced to cause the third, second and first pairs of dies c and c, b and b' and a and a to effect third, second and first steps of pressing on the sections in the cycle of operation, respectively.
  • the slide S is retracted from the bolster B and the feeding of the material is resumed to advance the material until the first section, second section, third section and a section following the third section (the section will be referred to as fourth section" hereinafter) are positioned between the fourth pair of dies d and d, third pair of dies c and c, second pair of dies b and b and first pair of dies a and a, respectively.
  • the slide S is advanced to cause the fourth, third, second and first pairs of dies d and d, c and c b and b and a and a to effect the fourth, third, second and first steps of pressing on the sections in the cycle of operation.
  • the first section is simultaneously cut from the remaining portion of the material or more particularly. from the second section of the material while the first section is subjected to the fourth step of pressing in the operation cycle.
  • final or desired products can be in succession produced and the products are discharged in the arrow direction A in FIG. 2.
  • the operation in the press is terminated.
  • a semimanufactured portion 3a comprising differently processed first, second, third and fourth sections remains in the die assembly with the rest of the material 3 connected to the fourth material section.
  • the shearing means 5 is moved toward the die assembly to the phantasm line position in H0.
  • the die assembly having the differently processed sections and the following section including the projecting portion 3b held therein is generally shown by character reference D in FIGS. and 3.
  • the die assembly is released from the bolster B and slide S by unclamping the upper and lower die units 1 and 2 from the slide S and bolster B, respectively.
  • the die assembly D having the material portions and 3b held therein is then removed from the processing zone by a conventional die exchanger 7 which is driven by any suitable drive means (not shown) and carries the die assembly to the die storage 8 where the die assembly D is stowed together with other similar die assemblies which are for performing different types of pressing operation and having similar material portions projecting therefrom.
  • the die assembly D suitable for the desired product is selected.
  • the selected die assembly D is picked up and carried by the die exchanger 7 to the pressing zone where the upper and lower die units 1 and 2 of the die assembly D are clamped to the slide S and bolster B, respectively.
  • the jointing means 6 which is now disposed out of the jointing position as shown by the solid line is moved to the phantasm line position to joint the rear or inner end of the projecting material portion 3b to the leading end of the material 3 which was left adjacent to the pressing zone in the previous shearing operation, After the jointing operation, the press is actuated to resume the above-mentioned procedure to produce the selected type of products in succession.
  • various types of die assemblies D having semimanufactured material portions 3a and projecting portions 3b held therein are stowed in the storage 8 and one particular type die assembly is selected from the stowed die assemblies when it is desired to produce the product to be pressed by the particular selected die assembly.
  • the selected die assembly D is positioned in the pressing zone with the upper die unit 1 and lower die unit 2 of the die assembly are clamped to the slide S and bolster B, respectively. Thereafter, the projecting portion 312 is jointed to the leading end of the succeeding material portion whereupon the pressing operation for producing the selected type of product is ready for starting.
  • the preparatory procedure can be effected in a brief of time without requiring any highly skilled worker as necessary in the conventional corresponding presses.
  • the possibility of hazard as feasible in the manual feeding of the material in the conventional presses can be effectively prevented.
  • the portion of the material which is positioned in the pressing zone is entirely pinched between the upper and lower die units as the material section is being processed, when the material is initially processed being held in the die assembly and the trailing end of the material is processed, the material will not be subjected to any biassing load to thereby eliminate the possiblity of damage of the dies which will be otherwise inevitable.
  • the process of the invention is especially advantageously employed when a small number of identical products are produced in one cycle of pressing operation and the frequency of die exchange is great.
  • a process for continuously processing a web or strip mate rial in a press in which an upper and lower die unit assembly with each unit having a series of aligned dies arranged in a line is employed for successively processing the material while the material is being fed in increment through successive pressing steps from one side of the press toward the other side of the press where the pressed product is discharged, characterized by that after the product which had been processed in the final pressing step has been discharged from said other side of the press le aving a semimanufactured por tion of the material held between the upper and lower die units of the die assembly, the semimanufactured material portion is sheared off the remaining portion of the material in a position at a distance from the feed side of the die unit assembly with a section of the material connected to the semimanufactured material portion projecting from the die unit assembly, the die unit assembly having the sheared semimanufactured portion held therein is removed from the body of said press and carried to a die storage by a die exchanger to be

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Replacement Of Web Rolls (AREA)
  • Punching Or Piercing (AREA)
US496217A 1973-08-18 1974-08-09 Process for continuously processing a web or strip material in a press Expired - Lifetime US3921887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9208773A JPS532147B2 (xx) 1973-08-18 1973-08-18

Publications (1)

Publication Number Publication Date
US3921887A true US3921887A (en) 1975-11-25

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ID=14044646

Family Applications (1)

Application Number Title Priority Date Filing Date
US496217A Expired - Lifetime US3921887A (en) 1973-08-18 1974-08-09 Process for continuously processing a web or strip material in a press

Country Status (9)

Country Link
US (1) US3921887A (xx)
JP (1) JPS532147B2 (xx)
DE (1) DE2439322A1 (xx)
FR (1) FR2240777B1 (xx)
GB (1) GB1476460A (xx)
IT (1) IT1019945B (xx)
NL (1) NL161693C (xx)
SE (1) SE398320B (xx)
SU (1) SU565626A3 (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844509A1 (de) * 1977-10-14 1979-04-19 Komatsu Mfg Co Ltd Formwechselvorrichtung fuer biegemaschinen
US4304041A (en) * 1980-01-04 1981-12-08 The National Machinery Company Automatic tool changer for forging machines
EP0062309A2 (de) * 1981-04-07 1982-10-13 Sroubárna Kyjov, národni podnik Vorrichtung zum Wechseln von Werkzeugen an horizontalen Pressen, insbesondere Mehrstufenpressen
US4554851A (en) * 1983-08-03 1985-11-26 Elhaus Friedrich W Apparatus for severing extruded light sectional members
US5330409A (en) * 1991-12-20 1994-07-19 Institute Of Technology Precision Electrical Discharge Cassette changing apparatus for index-feeding machining systems
US20130212988A1 (en) * 2010-02-26 2013-08-22 Cfs Germany Gmbh Method for Changing the Upper and Lower Tool of a Packaging Machine
CN104551698A (zh) * 2015-01-16 2015-04-29 黎瑞雯 一种用于金属卷料搭接异种金属的自动化装置
CN109333066A (zh) * 2018-09-27 2019-02-15 浙江花园铜业有限公司 一种铜带挤压装置及挤压方法
CN111390568A (zh) * 2020-06-05 2020-07-10 昆山华恒焊接股份有限公司 钢带裁剪焊接一体机
CN118080758A (zh) * 2024-04-29 2024-05-28 江苏博赢钻石科技有限公司 一种基于钻石生产设备的零部件加工冷镦机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054126B2 (ja) * 1976-09-02 1985-11-28 株式会社大井製作所 帯板材の接続装置
FR2436671A1 (fr) * 1978-09-23 1980-04-18 Weingarten Ag Maschf Presse a etages pour l'usinage en alternance de matiere en bande et de flans independants
DE3741588C2 (de) * 1987-12-08 1995-12-21 Louda Guenther Gmbh Vorrichtung zum Prägen von laminierten Werkstücken
DE19535759A1 (de) * 1995-09-10 1997-04-17 Horn Klaus Stanz- und Biegewerkzeug zum Herstellen von Werkstücken in mehreren Folgeschritten und Schweißvorrichtung, vorzugsweise für ein solches Stanz- und/oder Biegewerkzeug

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234648A (en) * 1960-12-14 1966-02-15 British Iron Steel Research Tool changers for forging presses
US3745646A (en) * 1970-10-02 1973-07-17 Pullmax Ab Arrangement in tool changes for stamping and nibbling machines and the like
US3841141A (en) * 1973-07-09 1974-10-15 S Rachwal Die changing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234648A (en) * 1960-12-14 1966-02-15 British Iron Steel Research Tool changers for forging presses
US3745646A (en) * 1970-10-02 1973-07-17 Pullmax Ab Arrangement in tool changes for stamping and nibbling machines and the like
US3841141A (en) * 1973-07-09 1974-10-15 S Rachwal Die changing apparatus

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844509C2 (de) * 1977-10-14 1986-03-06 Kabushiki Kaisha Komatsu Seisakusho, Tokio/Tokyo Wechselvorrichtung für die Unterwerkzeuge von Blech-Biegepressen
US4188815A (en) * 1977-10-14 1980-02-19 Kabushiki Kiasha Komatsu Seisakusho Die changing apparatus for a bending brake
DE2844509A1 (de) * 1977-10-14 1979-04-19 Komatsu Mfg Co Ltd Formwechselvorrichtung fuer biegemaschinen
US4304041A (en) * 1980-01-04 1981-12-08 The National Machinery Company Automatic tool changer for forging machines
EP0062309A2 (de) * 1981-04-07 1982-10-13 Sroubárna Kyjov, národni podnik Vorrichtung zum Wechseln von Werkzeugen an horizontalen Pressen, insbesondere Mehrstufenpressen
EP0062309A3 (de) * 1981-04-07 1982-12-08 Sroubárna Kyjov, národni podnik Vorrichtung zum Wechseln von Werkzeugen an horizontalen Pressen, insbesondere Mehrstufenpressen
US4554851A (en) * 1983-08-03 1985-11-26 Elhaus Friedrich W Apparatus for severing extruded light sectional members
US5330409A (en) * 1991-12-20 1994-07-19 Institute Of Technology Precision Electrical Discharge Cassette changing apparatus for index-feeding machining systems
US20130212988A1 (en) * 2010-02-26 2013-08-22 Cfs Germany Gmbh Method for Changing the Upper and Lower Tool of a Packaging Machine
US9555513B2 (en) * 2010-02-26 2017-01-31 Gea Food Solutions Germany Gmbh Method for changing the upper and lower tool of a packaging machine
CN104551698A (zh) * 2015-01-16 2015-04-29 黎瑞雯 一种用于金属卷料搭接异种金属的自动化装置
CN109333066A (zh) * 2018-09-27 2019-02-15 浙江花园铜业有限公司 一种铜带挤压装置及挤压方法
CN111390568A (zh) * 2020-06-05 2020-07-10 昆山华恒焊接股份有限公司 钢带裁剪焊接一体机
CN111390568B (zh) * 2020-06-05 2020-09-01 昆山华恒焊接股份有限公司 钢带裁剪焊接一体机
CN118080758A (zh) * 2024-04-29 2024-05-28 江苏博赢钻石科技有限公司 一种基于钻石生产设备的零部件加工冷镦机

Also Published As

Publication number Publication date
NL7410812A (nl) 1975-02-20
SE398320B (sv) 1977-12-19
NL161693B (nl) 1979-10-15
GB1476460A (en) 1977-06-16
JPS532147B2 (xx) 1978-01-25
JPS5042475A (xx) 1975-04-17
SU565626A3 (ru) 1977-07-15
FR2240777A1 (xx) 1975-03-14
SE7410380L (xx) 1975-02-19
IT1019945B (it) 1977-11-30
NL161693C (nl) 1980-03-17
FR2240777B1 (xx) 1979-03-09
DE2439322A1 (de) 1975-03-06

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