EP0531523B1 - Verriegelungsvorrichtung für eine transfereinrichtung - Google Patents

Verriegelungsvorrichtung für eine transfereinrichtung Download PDF

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Publication number
EP0531523B1
EP0531523B1 EP90907478A EP90907478A EP0531523B1 EP 0531523 B1 EP0531523 B1 EP 0531523B1 EP 90907478 A EP90907478 A EP 90907478A EP 90907478 A EP90907478 A EP 90907478A EP 0531523 B1 EP0531523 B1 EP 0531523B1
Authority
EP
European Patent Office
Prior art keywords
engaging
locking
transfer
main body
locking device
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
EP90907478A
Other languages
English (en)
French (fr)
Other versions
EP0531523A1 (de
EP0531523A4 (en
Inventor
Yuji 48 Obishi-Machi Hirota
Toshihiro 118 Shima-Machi O Tanaka
Nobuyuki 3-72 Nishikarumi-Machi Kaji
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of EP0531523A1 publication Critical patent/EP0531523A1/de
Publication of EP0531523A4 publication Critical patent/EP0531523A4/en
Application granted granted Critical
Publication of EP0531523B1 publication Critical patent/EP0531523B1/de
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
    • B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars
    • 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

Definitions

  • the present invention relates to a locking device for transfer feeder employed in a transfer press where the features of the preamble part of claim 1.
  • a transfer feeder with such a locking device is known from JP-A-57-49029.
  • the known transfer feeder is employed in a conventional transfer press and comprises at least one transfer bar which is movable in two-dimensional or three-dimensional directions.
  • the transfer bar is adapted to be driven by a driving force taken-off by a power take-off of the transfer press.
  • the locking device for mechanically locking the drive mechanisms for driving the transfer bars in feeding, lifting and clamping directions even when engineer performs maintenance or repair by entering into the transfer feeder, the transfer bars or its driving portions will never move unexpectedly due to their own weight or so forth to ensure safety in maintenance and repairing operations.
  • the reference numeral 1 denotes a main body of a transfer press, which includes a moving bolster 2 .
  • a pair of transfer bars 4 of a transfer feeder 3 are provided above the moving bolster 2 .
  • the transfer bars 4 are provided in parallel relationship orienting in parallel to the transfer direction of not shown works.
  • the transfer bars 4 are adapted to be driven in three-dimensional directions of feeding direction, lifting direction and clamping direction by a driving force taken off by a not shown power take off provided in the main body of the press 1 .
  • a locking device 7 according to the present invention is provided in the vicinity of a feed carrier 5a of a feed drive mechanism 5 or an equalizer bar 6 provided in a lift and clamp mechanisms (both being not shown).
  • the locking device 7 has an engaging plate 8 fixedly secured on the feed carrier 5a or the equalizer bar 6 .
  • the engaging plate 8 is formed with a plurality of engaging holes 8a aligned in the longitudinal direction with a regular interval and dogs 8b at the positions corresponding to the engaging holes 8a .
  • the dogs 8b are adapted to be detected by means of a detector 9 , such as a proximity switch, movable along the engaging plate 8 .
  • the detector 9 is mounted on a sliding member 7b movably supported on a base 7a of the locking device 7 via a bracket 10 .
  • a thread shaft 12 which is rotatingly driven by a feeding motor 11 is engaged with the lower portion of the sliding member 7b so that the sliding member 7b is driven to move along the engaging plate 8 by means of the feeding motor 11 .
  • the sliding member 7b carries a locking pin 13 in opposition to the engaging plate 8 , which lock pin 13 has a tip end entering into the engaging hole 8a of the engaging plate 8 to lock the engaging plate 8 .
  • the locking pin 13 is normally biased toward the engaging plate 8 by means of a compression spring 14 so as to establish locking for the engaging plate by the effect of the compression spring 14 .
  • the rear end of the locking pin 13 is connected to a hydraulic cylinder 15 so as to unlock the engaging plate in response to a hydraulic pressure supplied from a pressurized fluid source 18 via an electromagnetic valve 16 and a piping 17 .
  • the reference numeral 19 denotes a detector for detecting locking and unlocking states of the locking pin 13 .
  • the detector 9 Since the detector 9 is provided on the sliding member 7b , the detector 9 detects the dogs 8b of the engaging plate 8 . In response to a signal from the detector 9 , an electromagnetic valve 16 is switched from a communicating position 16a to a drain position 16b so that a work fluid in the hydraulic cylinder is drained.
  • the locking pin 13 is projected in the direction toward the engaging plate 8 by the action of the compression spring 14 and thus inserted into the engaging hole 8a at the corresponding position to the detected dog 8b . Therefore, the feed carrier 5a or the equalizer bar 6 of the lifting and clamping mechanisms fixed to the engaging plate 8 can be mechanically locked. Therefore, unexpected movement of the transfer bars due to its own weight during maintenance or repairing operation can be certainly prevented.
  • a press main body 21 takes off the driving force for rotatingly driving a cam shaft 26 by the taken off driving force.
  • a feeding cam 26a , a clamping cam 26b and a lifting cam 26c are provided on the cam shaft 26 .
  • a feed carrier 27 is driven by the feeding cam 26a .
  • a clamping drive lever 28 is driven by the clamping cam 26b .
  • a lifting drive lever 29 is driven by the lifting cam 26c .
  • the transfer bars 24 are driven in a three-dimensional directions, i.e. feeding and returning direction, clamping and unclamping direction and lifting and lowering direction, by the feed carrier 27 , the clamping drive lever 28 and the lifting drive lever 29 .
  • Locking devices 30 1 , 30 2 and 30 3 are respectively provided in the vicinity of the feed carrier 27 , the clamping drive lever 28 and the lifting drive lever 29 .
  • the locking device 30 1 provided for the feed carrier 27 has locking cylinders 31 arranged at both sides of the feed carrier 27 .
  • a piston rod 31a projected from the locking cylinder 31 is adapted to insert the tip end portion thereof into an engaging hole 32a of an engaging plate 32 provided on the upright side 21a of the press main body 21 for locking the feed carrier.
  • the locking devices 30 2 and 30 3 provided in the vicinity of the clamping drive lever 28 and the lifting drive lever 29 have locking cylinders 31 which are constructed to engage the tip ends of the piston rods 31b to a plurality of recess form engaging portions 28a and 29a respectively aligned in the longitudinal directions of the clamping drive lever 28 and the lifting drive lever 29 .
  • the locking cylinders 31 are mounted on a stationary portion, such as a bed of the press main body 21 by means of brackets 30a . As shown in Figs. 3 to 5 , the interior space of the lock cylinder 31 is divided into a pressure chamber 31 1 and a spring chamber 31 2 by the piston 31a . A hydraulic pressure is supplied to the pressure chamber 31 1 from a pressurized fluid source 33 via an electromagnetic valve 34 . On the other hand, a compression spring 31d for biasing the piston 31a in the locking direction is housed within the spring chamber 31 2 .
  • a dog 35 is carried on the tip end of the actuation rod.
  • a lock detector 36 comprising a proximity switch is adapted to detect the dog 35 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Advancing Webs (AREA)
  • Control Of Presses (AREA)

Claims (5)

  1. Verriegelungsvorrichtung (7,30) für eine Transfervorschubeinrichtung (3) einer Transferpresse, welche ein Paar von Transferstangen (4,24) aufweist, die in Zwei- oder Dreidimensionen bewegbar sind, mit einer Eingriffseinrichtung, einer Verriegelungseinrichtung und einer Antriebseinrichtung zum Antreiben der Verriegelungseinrichtung in Eingriff mit der Eingriffseinrichtung, dadurch gekennzeichnet, daß die Eingriffseinrichtung (8,28,29,32) fest entweder auf einem Antriebsmechanismus (6,28,29) der Transferstangen (4,24) oder einem stationären Bereich eines Pressenhauptkörpers (1,21) montiert ist;
    die Verriegelungseinrichtung (13,31) fest auf dem jeweils anderen von Antriebsmechanismus und stationärem Bereich des Pressenhauptkörpers (1,21) zum Eingriff mit der Eingriffseinrichtung montiert ist, wobei die Verriegelungseinrichtung mit der Eingriffseinrichtung zum selektiven Verriegelungseingriff in einer Vielzahl von ausgewählten relativen Stellungen zwischen Antriebsmechanismus und stationärem Bereich des Pressenhauptkörpers zusammenwirkt, und
    die Antriebseinrichtung (14,15,16,17,18,31d,33,34,341,2,3) eine Verriegelung in der ausgewählten relativen Position von Antriebsmechanismus und stationärem Bereich des Pressenhauptkörpers (1,21) herstellt.
  2. Verriegelungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Eingriffseinrichtung (8,28,29,32) eine Vielzahl von Eingriffsplatten (8) aufweist, die an einem Vorschubträger und Ausgleichstange (6) befestigt sind, die in einem Anhebe/Klemmechanismus vorgesehen sind, der den Antriebsmechanismus bildet, und eine Vielzahl von Eingriffsöffnungen (8a) aufweist, die in Längsrichtung in regelmäßigen Abständen angeordnet sind, wobei die Verriegelungseinrichtung (13) eine Vielzahl von Verriegelungsstiften (13) aufweist, die entsprechend an einer Vielzahl von stationären Bereichen des Pressenhauptkörpers (1) gegenüberliegend zu den Eingriffsplatten (8) angeordnet und in axiale und laterale Richtungen mittels der Antriebseinrichtungen (11) bewegbar sind, um mit einer der Vielzahl von Eingriffsöffnungen (8a) in Eingriff zu geraten.
  3. Verriegelungsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß jede Eingriffsplatte (8) an vorbestimmten Stellen entsprechend zu jeder Eingriffsöffnung (8a) Klauen (8b) aufweist und Eingriff und Lösen des Verriegelungsstifts (13) relativ zu den Eingriffsöffnungen durch Erfassen einer der Klauen mittels eines Detektors (9) erfolgt.
  4. Verriegelungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Eingriffseinrichtungen (8,28,29,32) eine Eingriffsplatte (32), die an einem stationären Bereich des Pressenhauptkörpers (21) befestigt ist, und eine Vielzahl von Eingriffsöffnungen (32a) aufweist, die in Vorschubrichtung eines Vorschubträgers (27) mit vorgegebenem Abstand angeordnet sind, ein Eingriffsbereich eine Vielzahl von Nutausnehmungen (28a) aufweist, die in einem Klemmhebel (28) entlang dessen Längsrichtung mit vorgegebenem Abstand angeordnet sind und ein Eingriffsbereich mit einer Vielzahl von Nutausnehmungen (29a) in einem Anhebehebel (29) entlang dessen Längsrichtung in regelmäßigem Abstand angeordnet sind, wobei die Verriegelungseinrichtung (31) eine Vielzahl von Verriegelungszylindern (31) aufweist, die am Vorschubträger (27) und zwei Bereichen des Pressenhauptkörpers (21) entsprechend gegenüberliegend zur Eingriffsplatte und den beiden Eingriffsbereichen angeordnet sind, um mit entsprechend den Eingriffsöffnungen (32a) oder den Nutausnehmungen (28a,29a) in Eingriff zu kommen.
  5. Verriegelungsvorrichtung nach Ansprüchen 2 oder 4, dadurch gekennzeichnet, daß die Verriegelungseinrichtung (13,21) in Verriegelungsstellung durch eine Vorspanneinrichtung (14,31d) und in Entriegelungsstellung durch einen Hydraulikdruck (18,33) verstellbar ist.
EP90907478A 1990-05-25 1990-05-25 Verriegelungsvorrichtung für eine transfereinrichtung Expired - Lifetime EP0531523B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1990/000676 WO1991018691A1 (en) 1990-05-25 1990-05-25 Locking device of transfer feeder

Publications (3)

Publication Number Publication Date
EP0531523A1 EP0531523A1 (de) 1993-03-17
EP0531523A4 EP0531523A4 (en) 1993-10-20
EP0531523B1 true EP0531523B1 (de) 1997-08-13

Family

ID=13986529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90907478A Expired - Lifetime EP0531523B1 (de) 1990-05-25 1990-05-25 Verriegelungsvorrichtung für eine transfereinrichtung

Country Status (4)

Country Link
EP (1) EP0531523B1 (de)
KR (1) KR960008686B1 (de)
DE (1) DE69031282T2 (de)
WO (1) WO1991018691A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102091803B (zh) * 2011-03-29 2012-07-04 桐庐百力锁具厂 一种锁具打孔机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5749029U (de) * 1980-09-04 1982-03-19
DE3235308A1 (de) * 1982-09-24 1984-03-29 L. Schuler GmbH, 7320 Göppingen Pressen-einheit mit zugleich mit dem werkzeugwechsel auszutauschenden greiferschienen
JPH0618676B2 (ja) * 1984-10-23 1994-03-16 株式会社小松製作所 プレス用材料搬送装置

Also Published As

Publication number Publication date
KR960008686B1 (ko) 1996-06-29
DE69031282T2 (de) 1998-01-02
EP0531523A1 (de) 1993-03-17
EP0531523A4 (en) 1993-10-20
KR930700230A (ko) 1993-03-13
WO1991018691A1 (en) 1991-12-12
DE69031282D1 (de) 1997-09-18

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