JPH06262280A - Transfer feeder - Google Patents

Abstract

PURPOSE:To obtain the optional motion pattern with a simple constitution. CONSTITUTION:One pair of lift beams 9 are arranged in parallel in the work carrying direction A in a press body 1 and these lift beams 9 are driven in the vertical direction by lift mechanism 10 using a servo motor 11 as the driving source. Further, plural cross bar carriers 15 with hanging cross bars 16 in the side way are movably arranged in these lift beams 9 to be driven in the feed direction by feed mechanism 20 using a feed cam 22 which is rotated by the driving power taken out from a press body 1 as the driving source. Then, by controlling the servo motor, the motion pattern of the cross bar 16 is optionally obtd., and as the cam is unnecessary in each motion pattern, the driving mechanism is simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer feeder adopting a vacuum transfer system.

[0002]

2. Description of the Related Art Conventional transfer presses are provided with transfer feeders for loading and unloading workpieces into the press body and transporting the workpieces to respective processing stations.
In addition, some transfer feeders employ a vacuum transfer system that picks up and transfers a work. In the transfer feeder adopting this vacuum transfer system, the feed cam and the lift cam are rotated by the power taken out from the press main body, and the cross bar having the work suction means is attached to the feed and lift by the cam.
There are those that are driven in the dimensional direction.

[0003]

However, in the case where the cams are driven in the feed and lift directions, when the motion pattern of the crossbar is varied, a plurality of cams are required according to the motion patterns, and therefore the driving is performed. The mechanism is complicated and expensive, and there is a problem that the motion pattern that can be changed by the number of cams is limited. The present invention has been made in order to improve such a conventional problem, and an object of the present invention is to provide a transfer feeder which can easily obtain an arbitrary motion pattern with a simple configuration.

[0004]

In order to achieve the above object, the present invention has a pair of lift beams arranged side by side in the work transfer direction in the press body, and these lift beams are lifted by a servo motor as a drive source. Along with being driven vertically by a mechanism, a plurality of crossbar carriers on which crossbars are laid horizontally are movably provided on these lift beams,
Moreover, these crossbar carriers are driven in the feed direction by a feed mechanism using a feed cam rotated by the power taken out from the press body 1 as a drive source.

[0005]

[Operation] Since the crossbar can be moved in any motion pattern by controlling the servomotor with the above configuration, various motion patterns can be easily obtained, and a cam is not required for each motion pattern. The mechanism can be simplified.

[0006]

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. In the figure, 1 is a module type transfer press main body in which a slide 2 and a slide drive mechanism 3 are divided for each processing station, on an upright 1b standing upright from a bed 1a, and on an upright 1b spaced apart in the front and rear, It has a pair of beams 1c spaced apart in the front-rear direction and arranged in parallel in the work transfer direction A, and the slide drive mechanism 3 is provided between these beams 1c for each processing station.
And a slide 2 is provided below the slide drive mechanism 3 so as to be vertically movable.

Below the slides 2, there is a press body 1
There are provided a plurality of moving bolsters 4, for example, two moving bolsters 4 which can be freely moved in and out, and a lower mold 5 installed on these moving bolsters 4 and an upper mold 6 mounted on the lower surface of the slide 2. Press molding is performed between them.

On the other hand, reference numeral 8 in the drawing denotes a transfer feeder provided in the press body 1 and has a pair of lift beams 9 arranged in parallel in the work conveying direction A. These lift beams 9 are suspended from above by a lift mechanism 10 attached to the beam 1c so as to be located between the slide drive mechanisms 3. The lift mechanism 10 has a vertically movable rack rod 13 that meshes with a pinion 12 that is rotated by a servomotor 11, and a plurality of lift beams 9 are supported at the lower ends of these rack rods 13. The servo motor 11 is vertically driven in synchronization with the operation of the press body 1.

On the lower surface of each lift beam 9, a plurality of crossbar carriers 15 are arranged at intervals in the work transfer direction.
Is installed. These crossbar carriers 15 are movably supported in the work transfer direction A, and the workbar transfer direction A is provided between the crossbar carriers 15 facing each other.
The crossbars 16 are horizontally installed so as to be orthogonal to the crossbars 16 and a vacuum cup (both not shown) for adsorbing a work is provided on the crossbars 16.

A connecting rod 1 is provided between each crossbar carrier 15.
The crossbar carrier 15 is connected to each other by means of 7 and can move in the feed direction at the same time, and the crossbar carrier 15 located downstream is connected to the feed mechanism 2 via the connecting rod 18.
0 is connected to the feed lever 21. The feed mechanism 20 has a feed cam 22 which is rotated by the power taken out from the press main body 1. By swinging the feed lever 21 by the feed cam 22, each crossbar carrier 15 is fed in the feed direction. It can be driven to. Also, the above feed cam 2
A positive cam is used for 2, and a reaction cylinder for urging the swing lever 21 so as not to separate from the feed cam 22 is omitted.

The operation will now be described. The lift beam 9 is moved up and down via the rack rod 13 by the servomotor 11 whose rotation is controlled in synchronization with the operation of the press body 1, and at the same time, the feed mechanism 20 causes the crossbar carrier to move. 15 is reciprocated in the feed direction, and the workpieces adsorbed by the vacuum cups attached to the crossbars 16 are sequentially conveyed to the processing stations. Further, in order to avoid the interference between the work being conveyed and the die depending on the shape of the work to be formed, the cross bar 16 is controlled by controlling the servomotor 11 during the work conveyance as shown in (a) or (b) of FIG. Can be moved in an arbitrary motion pattern, which makes it possible to convey the work without causing interference between the mold and the work.

[0012]

As described above in detail, the present invention drives the lift beam up and down by the lift mechanism using the servomotor as a drive source, and feeds the cam by using the crossbar carrier in which the crossbar is installed horizontally. Since it is driven in the feed direction, the crossbar can be moved in an arbitrary motion pattern by controlling the servomotor according to the shape of the workpiece to be molded. This makes it possible to obtain an arbitrary motion pattern without the need for a complicated drive mechanism, which can reduce the price of the transfer feeder, and the feed direction is a cam drive system that mechanically interlocks with the press body. There is no fear that the crossbar will be molded in a state in which the crossbar is confined in the mold due to a temporary stop, and thus it is possible to reliably prevent the crossbar and the mold from being damaged.

[Brief description of drawings]

FIG. 1 is a front view of a transfer press equipped with a transfer feeder according to an embodiment of the present invention.

FIG. 2 is a plan view of a transfer press equipped with a transfer feeder according to an embodiment of the present invention.

FIG. 3 is a view from the direction of the arrow X in FIG.

4 (a) and 4 (b) are explanatory views of the operation of the transfer feeder according to the embodiment of the present invention.

[Explanation of symbols]

1 ... Press main body, 9 ... Lift beam, 10 ... Lift mechanism, 11 ... Servo motor, 15 ... Crossbar carrier,
16 ... Crossbar, 20 ... Feed mechanism, 22 ... Feed cam.

Claims (1)

[Claims] 1. A pair of lift beams 9 are arranged side by side in a work transfer direction A in a press body 1, and these lift beams 9 are vertically driven by a lift mechanism 10 having a servo motor 11 as a drive source. These lift beams 9
, A plurality of crossbar carriers 15 on which crossbars 16 are laid horizontally are movably provided, and these crossbar carriers 15 are driven by a feed cam 22 which is rotated by the power taken out from the press body 1. A transfer feeder that is driven by the feed mechanism 20 in the feed direction.