JPH0119976B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for conveying a material from a certain arbitrary position to another position in a press machine, for example from a first processing position to a second processing position.
More specifically, the present invention relates to a conveyance device capable of conveying a material in response to the non-uniformity even if the distance between molds or the height of the molds in a press machine is non-uniform.

In press machines, a transfer device is known as a device that transports a material from a first processing position to a second processing position, for example. A conventional transfer device consists of a feed bar that extends parallel to the material conveyance direction and has material suction devices mounted at equal intervals, and the feed bar reciprocates horizontally and vertically over a fixed distance. . Therefore, in the past, materials at multiple processing positions were simultaneously attracted by lowering the foot bar.
and transported at the same time. Therefore, in the past, the plurality of processing positions had to be equidistant, and the heights of each processing position had to be the same. Therefore, in the past, it was quite difficult to deal with changes in the size of the mold used in the processing process.

The present invention was created in view of the above-mentioned conventional problems, and the apparatus according to the present invention is configured to easily cope with cases where the distances and heights of multiple processing positions are different. It is. In other words, a plurality of movable bodies are individually attached to a guide body extending parallel to the material conveyance direction so that they can move freely, and each movable body is provided with a suction device on each arm that can freely control vertical movement. It is something.

Embodiments of the present invention will be described in detail below with reference to the drawings.

The material conveying device 1 according to the present invention can be used at the gap part or the front face of a press that performs multiple process processing with one unit, or between presses when multiple single-process presses are connected to perform multiple process processes. etc. FIG. 1 shows an example in which the device is attached to a press. The press 3 is a general press, and has a C-shaped frame 5 with a bolster 7 attached thereto and a ram 9 attached so as to be vertically movable. Since this type of press is well known, detailed description thereof will be omitted.

The material conveying device 1 is mounted within a C-shaped gap portion 11 of a frame 5 of the press 3. However, the attachment position of the material conveying device 1 is not limited to the gap portion 11, and as described above, it can be installed between presses that connect a plurality of presses.

The material conveying device 1 includes a guide body 13 extending parallel to the material conveying direction in the press working line.
A plurality of servo arm units 15 are attached to the servo arm units 15 in a detachable and individually movable manner. Said guide body 1
As is clear from FIG. 2, 3 has a channel steel-like cross-sectional shape, and the lower plate 13L
There is a guide part 1 parallel to the material conveyance direction on the top surface of the
7 is provided. Although the guide portion 17 is formed in the shape of a guide rail in this embodiment, it may be formed in the shape of a guide groove. A rack 19 parallel to the guide portion 17 is provided on the lower surface of the upper plate 13U of the guide body 13.

The servo arm unit 15 has a guide portion 17
It consists of a movable body 21 etc. that can freely reciprocate along. An engaging part 23 movably engaged with the guide part 17 is formed at the lower part of the movable body 21, and a pinion 25 meshed with the rack 19 is rotatably attached to the upper part via a pin 27. There is. This pinion 25 is equipped with a first control motor 2, such as a servo motor, which is attached to the moving body 21.
An output gear 33 attached to an output shaft 31 at 9 is engaged with the output shaft 31. Therefore, the first control motor 29
The pinion 2 is driven appropriately via the output gear 33.
By appropriately rotating the movable body 21, the movable body 21 reciprocates (self-propelled) along the guide portion 17, and the range of the reciprocating movement can be set arbitrarily.

A vertical guide portion 35 is formed on the front side (right side in FIG. 2) of the movable main body 21. Although the upper and lower guide portions 35 are illustrated as having a groove shape, they are not limited to the groove shape. A base portion of an L-shaped elevating body 37 is engaged with the vertical guide portion 35 so as to be vertically movable, and a rack portion 39 is formed in the elevating body 37 in the vertical direction. This rack part 39 has an output shaft 43 of a second control motor 41 attached to the movable main body 21.
A pinion 45 attached to the holder is engaged with the pinion 45. Therefore, by appropriately operating the second control motor 41, the elevating body 37 can be moved up and down, and the range of the up and down movement can be set arbitrarily.

The elevating body 37 has an arm 47 extending forward.
The base of the arm 47 is integrally fixed.
An adsorption device 49 such as a vacuum pad or an electromagnet is attached to the tip of the holder so as to be movable up and down. This suction device 49 adsorbs or releases a material (not shown) when it is lowered together with the elevating body 37, and has the function of adsorbing the material and transporting it from one position to another device. It is something that does.

The first in each servo arm unit 15
The control motor 29, the second control motor 41, and the suction device 49 are operated under the control of an appropriate operation control device (not shown) such as a numerical control device or a computer, and each servo arm unit 15 are individually controlled and operated so as not to interfere with each other.

To control the servo arm unit 15, for example, the operation may be taught as shown in FIG. 3, and the operation may be coordinated with the press. That is, the arm origin is taught to the first servo arm unit 15.

Teach the feed amount to mold A (first position).

Teach the lift-down amount, material adsorption timing, and lift-up amount.

Teach the feed amount to mold B (second position).

Teach the amount of lift down, material release timing, and amount of lift up.

Return to origin The same teaching is individually given to each of the required number of servo arm units 15, such as the second, third, etc., and each servo arm unit 1 is
5 is performed in the same manner by control signals from a rotary cam switch or other press control device in the press. That is, the operation of each servo arm unit 15 is performed in a synchronous manner, and the operating speed is individually controlled in accordance with the feed amount.

The control of each servo arm unit 15 is as follows.
It is also possible to use NC control without using the teaching method described above.

As understood from the description of the embodiments above, according to the present invention, each servo arm unit 1
5, the horizontal movement of each movable body 21 and the vertical movement of each arm 47 are individually controlled, and the movement range (self-propelled range) of each movable body 21 and the vertical movement range of each arm 47 are individually controlled. Can be set to . Therefore, even if the distances, heights, etc. between a plurality of processing positions are non-uniform, this can be easily handled by individually controlling the first and second control motors. Therefore, mold installation and operation preparation (setup) can be performed more easily and in a shorter time than in the past. Furthermore, by attaching and detaching the servo arm unit 15 to and from the guide body 13 in accordance with the number of processing steps, changes in the number of processing steps can be easily accommodated.

The configuration in which the movable body 21 is reciprocated along the guide portion 17 and the configuration in which the elevating body 37 is moved up and down are not limited to the above-mentioned rack and pinion mechanism, but may be implemented in various configurations. for example,
As shown in FIG. 4, a stator 51 is attached to the guide body 13.
It is also possible to construct a linear motor in which the moving body 21 is provided with a coil 53. Further, the elevating mechanism for the elevating body 37 may be a rod-shaped linear motor with a cylindrical primary side 55. In the embodiment illustrated in FIG.
A rail member 57 is provided in place of the rack on the upper plate 13U of the guide body 13, and rollers 5 attached to the movable body 21 are mounted on three sides of the rail member 57.
9 are in contact with each other so as to be able to roll freely.

It should be noted that the present invention is not limited to the above-described embodiments, but can be implemented in various forms by making appropriate changes.

[Brief explanation of drawings]

Fig. 1 is a front view of a press equipped with a device according to the present invention, Fig. 2 is an enlarged sectional view taken along the - line in Fig. 1, Fig. 3 is an explanatory diagram of the operation, and Fig. 4 is a
It is an explanatory diagram of an example. (Explanation of symbols representing main parts of drawings), 13
... Guide body, 21 ... Moving body, 47 ... Arm, 49 ... Adsorption device, 29 ... First control motor, 41 ... Second control motor.

Claims (1)

[Claims] 1. A device for conveying a material from a certain arbitrary position to another in a press machine, in which a plurality of movable bodies are individually moved in the conveying direction on guide bodies extending parallel to the conveying direction of the material. A suction device is provided on the tip side of each arm that is attached to each movable body so as to be movable up and down, and each arm individually controls and operates each movable body. 1 control motor and each second control motor that individually controls and operates each arm is mounted on each movable body, and a control device for controlling the first control motor and the second control motor is provided. Features material conveyance device for press machines. 2. The material conveying device for a press machine according to claim 1, wherein the control motor is a linear motor.