JP2564231Y2 - Press transfer equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for a press, and more particularly to a transfer device for a press in which a two-dimensional transfer is provided with a work reversing device.

[0002]

2. Description of the Related Art Heretofore, as a reversing device for a work in a press transfer device, a device using a rack provided along a feed bar and a pinion meshing with the rack has been used. This reversing device,
In a state where the fingers of the transfer device hold the work, the fingers are turned over together.

[0003]

However, in such a conventional configuration, when the work is turned over, the work is prevented from interfering with the mold provided between the feed bars. It must be lifted once and then inverted. Since such an operation cannot be performed with a two-dimensional transfer device, a three-dimensional transfer device must be used, which is disadvantageous in terms of cost and the number of steps, and has a problem that production tact is slow. was there.

The purpose of the present invention is to pay attention to such a conventional technique, and it is an object of the present invention to provide a press transfer device capable of reversing a work even in a two-dimensional transfer device.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention provides a pair of feed bars provided opposite to each other, in which a plurality of pairs of fingers capable of gripping a work to be pressed are fed. The pair of feed bars are provided at equal intervals in the longitudinal direction of the bar and opposed to each other, and the pair of feed bars are provided so as to be movable in directions approaching and separating from each other and reciprocally reciprocable in the longitudinal direction of the feed bar. In a press transfer device configured to be able to sequentially transfer a workpiece to a plurality of dies arranged in a manner, a casing is independently provided at a position corresponding to an arrangement position of at least one of the plurality of dies. A pair of rotating bars provided so as to be movable up and down and opposed in the same direction as the facing direction of the fingers can be rotated on the casing via a horizontal rotating shaft. And an actuator for rotating the rotary shaft is provided on the casing, and upper and lower clamp claws mounted on the pair of rotary bars are individually rotatably provided up and down so as to clamp the work from above and below. It is.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a transfer apparatus 1 for a two-dimensional press. This transfer device 1
Is provided with a pair of feed bars 3 along the traveling direction of the workpiece W (A direction in the figure).
Is equipped with a plurality of pairs of fingers 5. And
A plurality of dies 7 and a work reversing device 9 are provided on each stage arranged at equal intervals between the pair of feed bars 3. Press machines (not shown) are arranged at the positions of the molds 7 for performing predetermined processing.

In such a transfer device 1,
The pair of feed bars 3 approach each other to pinch the workpiece W on the mold 7 with the pair of fingers 5, and in this state, a driving unit (not shown) moves the feed bar 3 forward to the position of the adjacent mold 7, Next, the work W is released from the pair of fingers 5 by separating the pair of feed bars 3 and the work W is placed on the adjacent die 7. Then, the pair of feed bars 3 move back to the original position. During this time, the work W placed on the molds 7 is subjected to predetermined processing by a press machine (not shown) arranged at the position of each mold 7. By repeating this process, the workpiece W is successively transported in the traveling direction, and is reversed at the position of the reversing device 9,
Further processing proceeds in the direction of travel.

On the other hand, FIGS. 3 and 4 show a plan view and a side view of the reversing device 9 arranged in place of the mold 7. The reversing device 9 is disposed at a position where the mold 7 is originally disposed, and a pair of rotating bars 11 are provided along the inside of the pair of feed bars 3. This pair of rotary bars 11 is provided at a position one step lower than the moving surface of the finger 5 in order to avoid interference with the finger 5, and is used for holding the work W between the front end and the rear end thereof. Clamps 13 are provided so as to be vertically movable with respect to the rotary bar 11. That is, the height of the finger 13 is set to be the same as the height of the finger 5 with the clamp 13 moved upward. These rotary bars 11 are rotatably supported by a casing 15 with a rotary shaft 11a provided at the center thereof as a fulcrum.

On the other hand, a shaft 19 attached to an air rotary actuator 17 as a rotation driving means.
A belt 21 is wound around a pulley 19a of the shaft 19 and a pulley 11b provided on the rotating shaft 11a of the rotating bar 11 described above. 11 is rotated.

An upper part of a piston 27 mounted on a fluid cylinder 25 provided on the upper surface of the bolster 23 is attached to a lower part of the casing 15. A guide shaft 27 is provided at a lower portion of the casing 15 so as to extend in a vertical direction. The guide shaft 29 is moved up and down with respect to the guide member 31.

With the above configuration, the piston rod 27 is moved up and down by operating the fluid cylinder 25. At this time, the guide shaft 29 is moved up and down by being guided by the guide member 31.

FIG. 5 shows an example of the structure of the clamp 13 described above. The clamp 13
And a pair of upper and lower clamp claws 13a and 13b for holding the clamp. Each of the clamp claws 13a and 13b is rotatably supported at a base end to which the pinion 33 is attached. And each clamp claw 13a,
13b, a cylinder 35a separately provided for 13b,
The rack 37 which reciprocates by 35b is engaged with the pinion 33.

With the above configuration, the fluid cylinders 35a, 3a
By operating 5b, the rack 37 is reciprocated and the pinion 33 is rotated. The rotation of the pinion 33 causes the clamp claws 13a and 13b to reciprocate about 90 degrees. Each of the clamp claws 13a and 13b is guided by a guide by a fluid cylinder (not shown) and is moved in the vertical direction.

Next, the reversing operation of the work W will be described with reference to FIG. First, with the casing 15 of the reversing device 9 lowered, the upper fluid cylinder 35a provided on the clamp 13 is driven to move the upper clamp claw 13a to 90 degrees.
The clamp 13 is set at the highest position with respect to the rotary bar 11 while being opened upward by degrees. Then, the work bar W is moved to the position of the reversing device 9 by moving the feed bar 3 forward while the finger 5 holds the work W processed by the mold 7 of the previous stage, and then the lower clamp The casing 15 is pushed up by the fluid cylinder 25 until the claw 13b comes into contact with the lower surface of the work W (the state of FIG. 6A).

Then, after the upper clamp claw 13a is closed and the work W is gripped, the finger 5 releases the work W and moves outward (direction B in the figure) of the feed bar 3 (see FIG. 6B). Status〕. When the finger 5 moves outward, each clamp 13 holds the work bar W while holding the work W.
In this state, the rotary bar 11 is rotated through the belt 21 by 180 degrees around the rotation shaft 11a by the operation of the air rotary actuator 17 to invert the work W (the state shown in FIG. 6C). .

When the inversion is completed, each clamp 13 is moved upward with respect to the rotary bar 11 and the casing 1
5, the height of the work W is adjusted to the height position of the finger 5 (the state shown in FIG. 6D). During this time, the feed bar 3 is moving backward, and when the finger 5 adjacent to the front side of the previous finger 5 holds the work W, the upper (corresponding to the lower side before inversion) clamp claw 26b is opened 90 degrees upward. The workpiece W is released (the state shown in FIG. 6E).

After the casing 15 is lowered, the feed bar 3 moves forward again to move the inverted work W to the next die 7 and carry the work W before being inverted into the reversing device 9. By repeating this process, the workpieces W are inverted one after another.

As described above, the reversing device 9 for the work W is located at one stage position in the two-dimensional transfer device 1.
Are provided separately, so that the work W can be reversed in a series of press working without using a tertiary transfer device as in the related art.

Then, the rotary bar 11 equipped with the clamps 13 at both ends is set at a position one step lower than the moving surface of the finger 5 so that only the clamp 13 can be moved up and down with respect to the rotary bar 11 by 180 degrees. Can move up and down, so that the finger 5 does not interfere with the clamp 13 and the like when moving while holding the work W. Further, since the clamp 13 is formed by the upper and lower clamp claws 13a and 13b which open and close separately and by 90 degrees, if the upper clamp claw 13a is opened by 90 degrees, the interference with the work W when the casing 15 and the clamp 13 are lifted up. Can be avoided.

In the above embodiment, the fluid cylinders 35a and 35b are used to open and close the clamp claws 13a and 13b of the clamp 13, but the present invention is not limited to this. For example, the same operation and effect can be obtained by using a combination of a motor and a gear.

In the above embodiment, the air rotary actuator 17 and the belt 21 are used as the driving means for reversing the work W. However, the present invention is not limited to this, and another device having the same function may be used. May be.

[0023]

As will be understood from the above description of the embodiment, in short, the present invention provides a pair of feed bars (3) provided opposite to each other so that a work (W) to be pressed can be gripped freely. A plurality of pairs of fingers (5) are provided at regular intervals in the longitudinal direction of the feed bar (3) and opposed to each other, and the pair of feed bars (3) are movable in directions approaching and moving away from each other. ), The work (W) is provided so as to be reciprocable in the longitudinal direction so that the work (W) can be sequentially transferred to a plurality of dies (7) arranged adjacent by the plurality of pairs of fingers (5). In the transfer device, a casing (15) is independently movably provided at a position corresponding to a position where at least one of the plurality of dies (7) is arranged, and a direction in which the fingers (5) face each other. When A pair of rotary bars (11) provided to face each other in a direction are rotatably provided on the casing (15) via a horizontal rotary shaft (11a), and an actuator for rotating the rotary shaft (11a) is provided. 1
7) is provided on the casing (15), and the upper and lower clamp claws (13a, 13a) mounted on the pair of rotary bars (11) to clamp the work (W) from above and below.
b) are provided individually rotatably up and down.

As is apparent from the above configuration, in the present invention, in the transfer device capable of sequentially transferring the work W to the plurality of dies 7 by the plurality of fingers 5 provided on the pair of feed bars 3 at equal intervals, A casing 15 is provided at a position corresponding to an arrangement position of at least one of the molds 7 so as to be vertically movable independently.
The casing 15 is provided with a pair of rotatable bars facing the same direction as the fingers 5 so as to be rotatable via a horizontal rotating shaft 11a, and an actuator 17 for rotating the rotating shaft 11a is provided. In addition, upper and lower clamps 13a and 13b are provided on the pair of rotary bars 11 so as to be able to hold the work W from above and below, respectively, so as to be individually rotatable up and down.

Therefore, according to the present invention, when the work W is sequentially transferred by the plurality of fingers 5 provided on the pair of feed bars 3 and transferred to the position above the casing 15, the work W is rotated by the pair of rotations. When the rotary bar 11 is held up and down by the clamps 13a and 13b provided on the bar 11 and rotated by the action of the actuator 17, the work W is simultaneously turned upside down. Then, by rotating the clamp pawl located on the upper side upward to release the clamping of the work W, the work W inverted by the finger 5 can be transported to the next process, and the work W of the previous process can be clamped. It can be carried to the position of the nail.

That is, according to the present invention, the casing 1 is provided separately from the feed bar 3 in the transfer device.
5 is provided so as to be movable up and down and a rotary bar 11 is rotatable.
Since the transfer devices 3a and 13b are individually rotatable up and down, the work W can be turned upside down with a simple structure during the transfer of the work W even if the transfer device is configured to be two-dimensionally fed. Can be done.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a transfer device for a press according to the present invention.

FIG. 2 is a side view as seen from the direction of arrow II in FIG.

FIG. 3 is a side view of the work reversing device as viewed from the direction of arrow III in FIG. 1;

FIG. 4 is a plan view of FIG.

FIG. 5 is a structural view showing a clamp of the work reversing device.

FIG. 6 is a series of explanatory diagrams showing the operation of the work reversing device.

[Explanation of symbols]

 Reference Signs List 1 transfer device 3 feed bar 5 finger 9 work reversing device 11 rotating bar 13 clamp 13a, 13b clamp claw 17 air rotary actuator (drive means) W work

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of pairs of fingers (5) capable of gripping a work (W) to be pressed are provided on a pair of feed bars (3) provided facing each other in the longitudinal direction of the feed bar (3). The feed bars (3) are provided at intervals and opposed to each other, and the pair of feed bars (3) are provided so as to be movable in directions approaching and separating from each other and reciprocally reciprocable in the longitudinal direction of the feed bars (3). ), A press transfer device configured to be able to sequentially transfer the work (W) to a plurality of dies (7) arranged adjacent to each other by at least one of the plurality of dies (7). A pair of rotary bars (11) provided independently and vertically movable at positions corresponding to the arrangement positions of the dies, and provided in the same direction as the fingers (5).
Is rotatably provided on the casing (15) via a horizontal rotation shaft (11a) and the rotation shaft (11
An actuator (17) for rotating a) is provided on the casing (15), and upper and lower clamp claws (13a) mounted on the pair of rotary bars (11) to clamp the work (W) from above and below. , 13b) are provided individually rotatably up and down.