JP2005066670A - Conveying device for transfer press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveying device for a transfer press with which a plurality of crossbars can be respectively and individually operated in the feed and lift directions. <P>SOLUTION: This device is provided with a pair of guide rails 51 which are extended in the direction of the press line and which are parallel to each other, a plurality of crossbar carriages 52 which are supported movably in the direction of the press line along the guide rails and crossbars 53 which are supported ascendably and descendably on each crossbar carriage. Each crossbar carriage 52 has a feed-driving device 54 for moving it in the feed direction and a lift-driving device 56 for lifting and lowering the crossbar. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a transfer press conveying apparatus.

  FIG. 3 is an overall perspective view of a cam-driven crossbar type transfer press. The crossbar type transfer press is provided with a pair of feed bars extending in the line direction on both sides of the mold row arranged side by side in the line direction, and the pitch between the feed bars is equal to the pitch between the molds in the line direction. Crossing the crossbar extending at right angles to the feedbar, the feedbar is moved up and down, and the crossbar is reciprocated in the line direction with respect to the feedbar. The press material is conveyed from the mold to the downstream mold.

  For the purpose of speeding up the line, a cart type transfer press illustrated in FIG. 4 has been proposed. In this figure, 1 is a line direction, 2 is a housing, 3 is a lower mold, 4 is a carrier, 5 is an upper mold, 6 is a slide, 7 is a press station, 9 is a loading station, 10 is a guide, and 11 is a loading Carriage, 12 is a feed carriage, 13 is a connecting member, 14 is a horizontal rack, 15 is a sector gear, 16 is a pin, 17 is a pinion, 18 is a vertical rack, 19 is a pinion, 20 is a cross bar, and 21 is a pressing material gripper ( Vacuum cups, etc.), 22 is a rocking center shaft, 23 is a drive lever, 24 is a cam follower, 25 is a drive shaft, 26 is a feed cam, 27 is a pin, 28 is a feed rod, 29 is a lift lever, 30 is a cam follower, 31 Is a lifting cam, 33 is a relay lever, 34, 35, 38 and 39 are pins, 36 is a lifting link, 40 is a lifting rod, and 41 is a roller.

  With this configuration, the feed cam 26 and the lift cam 31 are rotated by the rotational drive of the drive shaft 25. When the feed cam 26 rotates, the most downstream feed carriage 12 reciprocates in the line direction 1 along the guide 10 via the cam follower 24, the drive lever 23, and the feed rod 28, and each feed carriage 13 via the connecting member 13. 12 and the loading carriage 11 also reciprocate in the line direction 1 along the guide 10.

  When the lift cam 31 rotates, the sector gear 15 rotates via the cam follower 30, the lift lever 29, the lift link 36, the relay lever 33, and the lift rod 40, and further via the pinion 17, the horizontal rack 14, and the pinion 19. The vertical racks 18 of the feeding carts 12 and the carrying carts 11 are moved up and down.

Therefore, by rotating both the feed cam 26 and the lift cam 31, the transfer press repeats the reciprocating operation and the lift operation of the press material gripping tool 21, and the press material supplied from the carry-in station 9 is moved from the upstream in the line direction 1 to the downstream. The press stations 7 can be sequentially press-molded while being sequentially fed to the press stations 7.
In addition, there exists patent document 1 as related prior art.
JP-A-11-57898

  However, the above-described conventional transfer press conveying apparatus is mechanically connected in both the feed direction and the lift direction, and there is a problem in that each operation cannot be performed independently.

  In order to solve this problem, the applicant of the present invention created and applied for a "transfer press work transfer device" driven by an AC servomechanism (Japanese Patent Laid-Open No. 11-57898).

  This device has lift beams extending in the press line direction in parallel on the left and right sides facing each other across the press line in the press housing, and the left and right lift beams are installed above. The feed beam extending in the press line direction is suspended and supported on the lower surface of each lift beam so as to be movable in the press line direction, and between the left and right feed beams, A crossbar equipped with a workpiece gripper is attached to each processing station in the press housing, and a pinion rack mechanism driven by a feed servomotor is connected to each feed beam. It is.

  However, even with this AC servo-driven transfer press conveying device, the feed and lift servomotors can only independently operate the feed direction and the lift direction independently, and each crossbar is operated independently. There was a problem that could not be done.

  The present invention has been made to solve the various problems described above. That is, an object of the present invention is to provide a transfer press conveying apparatus capable of operating a plurality of cross bars independently in a feed direction and a lift direction.

  According to the present invention, a pair of parallel guide rails extending in the press line direction and movable in the press line direction along the guide rails at left and right side positions facing each other across the press line in the press housing. A plurality of supported crossbar carriages and crossbars supported by the crossbar carriages so as to be movable up and down are provided. Each crossbar carriage moves up and down the crossbar. There is provided a transfer press conveying device characterized by having a lift driving device for each of them.

According to the above configuration of the present invention, each crossbar carriage has a feed driving device for moving in the feed direction and a lift driving device for raising and lowering the crossbar. Flexible motion support with different station lift strokes is possible.
In addition, since each crossbar carriage has a feed driving device and a lift driving device, a conventional cam box is not required and the weight can be reduced.

According to a preferred embodiment of the present invention, the feed driving device is a rack and pinion type driving device comprising a horizontal rack provided along a guide rail, a pinion that meshes with the horizontal rack, and a servo motor that rotationally drives the rack. It is.
With this configuration, the servo motors can be individually controlled so that each crossbar carriage can respond to a flexible feed motion.

According to another preferred embodiment, the feed driving device is a timing belt driving device comprising a timing belt provided along a guide rail, a belt pulley meshing with the timing belt, and a servo motor that rotationally drives the belt. It is.
Also with this configuration, the servo motors can be individually controlled so that each crossbar carriage can respond to a flexible feed motion.

The lift driving device is a rack and pinion type driving device comprising a vertical rack for suspending a cross bar, a pinion that meshes with the vertical rack, and a servo motor that rotationally drives the pinion.
With this configuration, it is possible to individually control the servo motor and make the crossbar respond to flexible lift motion.

  As described above, the transfer press conveying apparatus of the present invention can operate a plurality of crossbars independently in the feed direction and the lift direction, respectively, thereby allowing flexible motions with different lift strokes at each station. It is possible to cope with it, and the conventional cam box is unnecessary, and it has excellent effects such as weight reduction.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In each figure, common portions are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a diagram showing a first embodiment of a transfer press conveying apparatus according to the present invention. In this figure, a transfer press conveying device 50 of the present invention includes a guide rail 51, a crossbar carriage 52, a crossbar 53, a feed driving device 54, and a lift driving device 56.

  A pair of guide rails 51 are provided in parallel in the press housing of the transfer press. The pair of guide rails 51 are provided to extend in the press line direction (feed direction) at both left and right positions facing each other across the press line. The guide rail 51 of the present invention may be fixedly held at a predetermined height, or may be configured to perform feed and lift in synchronization with the overall movement.

The crossbar carriage 52 is guided by a guide (not shown) along the guide rail 51 and is supported by the guide rail 51 so as to be movable in the press line direction. A plurality of crossbar carriages 52 are provided, one for each press station.
The plurality of crossbars 53 are supported by each crossbar carriage 52 so as to be movable up and down. A press material gripping tool (not shown) such as a vacuum cup is attached to the cross bar 53 below.

  The feed driving device 54 is provided in each crossbar carriage 52 and moves each crossbar carriage 52 in the feed direction. The lift driving device 56 is provided in each crossbar carriage 52 and raises and lowers each crossbar 53.

  In FIG. 1, a feed driving device 54 is a rack and pinion type driving device including a horizontal rack 54a provided along a guide rail 51, a pinion 54b engaged with the horizontal rack 54a, and a servo motor 54c for rotating the pinion 54b. The servo motors 54c are individually controlled so that each cross bar carriage 52 is adapted to a flexible feed motion.

  In FIG. 1, a lift driving device 56 is a rack and pinion type driving device comprising a vertical rack 56a for suspending a cross bar 53, a pinion 56b meshing with the vertical rack 56a, and a servo motor 56c for driving the pinion 56b. The motor 56c is individually controlled so that the cross bar 53 can respond to a flexible lift motion.

FIG. 2 is a second embodiment of the transfer press conveying apparatus of the present invention. In this figure, a feed driving device 54 is a timing belt driving device comprising a timing belt 55a provided along a guide rail 51, a belt pulley 55b meshing with the timing belt 55a, and a servo motor 55c for rotationally driving the belt pulley 55b. The servo motor 55c is individually controlled so that each crossbar carriage 52 is adapted to flexible feed motion.
Other configurations are the same as those in FIG.

According to the above-described configuration of the present invention, each crossbar carriage 52 has the feed driving device 54 for moving in the feed direction and the lift driving device 56 for moving the crossbar up and down. It can be driven and can respond flexibly to motions with different lift strokes at each station.
In addition, since each crossbar carriage 52 has a feed driving device 54 and a lift driving device 56, a conventional cam box is unnecessary, and the weight can be reduced.

  In addition, this invention is not limited to embodiment mentioned above, Of course, it can change variously in the range which does not deviate from the summary of this invention.

It is 1st Embodiment figure of the transfer press conveying apparatus of this invention. It is 2nd Embodiment figure of the transfer press conveying apparatus of this invention. It is a perspective view of the conventional transfer press. It is a block diagram of the conventional transfer press.

Explanation of symbols

1 line direction, 2 housing, 3 lower mold, 4 carrier,
5 Upper mold, 6 slides, 7 press stations,
9 loading station, 10 guides, 11 loading cart,
12 feed carts, 13 connecting members, 14 horizontal racks,
15 sector gear, 16 pin, 17 pinion, 18 vertical rack,
19 pinions, 20 crossbars,
21 Press material gripping tool (vacuum cup), 22 Oscillation center shaft,
23 drive lever, 24 cam follower, 25 drive shaft,
26 Feeding cam, 27 pins, 28 Feeding rod, 29 Lifting lever,
30 cam follower, 31 lift cam, 33 relay lever,
34, 35, 38, 39 pins, 36 lifting link, 40 lifting rod,
41 Laura,
50 transfer press conveyor, 51 guide rail,
52 crossbar carriage, 53 crossbar,
54 feed drive, 54a horizontal rack, 54b pinion,
54c servo motor, 55a timing belt, 55b belt pulley,
55c servo motor, 56 lift drive, 56a vertical rack,
56b Pinion, 56c Servo motor

Claims (4)

A pair of parallel guide rails extending in the press line direction, and a plurality of crosses supported so as to be movable in the press line direction along the guide rails, at opposite left and right positions across the press line in the press housing. A bar carriage and a cross bar supported by the cross bar carriages so as to be movable up and down;
Each of the crossbar carriages has a feed driving device for moving in the feed direction and a lift driving device for raising and lowering the crossbar, respectively. The feed drive device is a rack and pinion type drive device comprising a horizontal rack provided along a guide rail, a pinion meshing with the rack, and a servo motor for rotationally driving the pinion. 2. The transfer press conveying apparatus according to 1. 2. The timing belt driving device according to claim 1, wherein the feed driving device is a timing belt driving device comprising a timing belt provided along a guide rail, a belt pulley meshing with the timing belt, and a servo motor for rotationally driving the belt pulley. The transfer press conveying apparatus as described in 2. The said lift drive device is a rack and pinion type drive device which consists of the vertical rack which suspends a crossbar, the pinion which meshes with this, and the servomotor which rotationally drives this. Transfer press conveying device.

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