JPH0829475B2 - Work unloading device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a work unloading device that carries out a work, which has been pressure-molded by a pressure molding device, to the outside in the process of manufacturing a sintered part, for example.

(Prior Art) In general, various machine tools and press devices are provided with a carry-out device that carries out a work formed in a predetermined shape to the outside at the end of processing.

Conventionally, for example, a press device for forming a sintered part is also provided with a work unloading device for unloading the formed work that is relatively susceptible to chipping or cracking. Such a work unloading device is, for example, as shown in FIGS. 3 and 4.

Sintered parts are molded by pressing iron powder supplied into the mold with a press machine. To this press machine, a workpiece that is relatively susceptible to chipping or cracking is carried out from the mold. Although a work unloading device is provided, this work unloading device has a feeder 2 that moves in a direction in which the work 1 is unloaded (hereinafter, referred to as unloading direction) in synchronization with a processing end operation of the pressure forming process. are doing.

The feeder 2 is provided with a claw 3 that holds the work 1. This claw 3 is, as shown in the drawing, a feeder 2
The work 1 is held by coming into contact with the outer periphery of the work 1 in accordance with the movement of the work 1, and the work 1 can be conveyed to a predetermined carry-out position outside the press device.

Further, a lever 4 for discharging the work 1 from the claw 3 is attached to the claw 3, and the lever 4 is provided with a stopper 5 attached to the press device in accordance with the carry-out position as shown in FIG. By contacting the workpiece 1 with the nail 3
It is designed to be pushed out from.

Then, the work 1 which has been processed by the press machine 1
After being transported to the carry-out position while being gripped by the claw 3 in accordance with the operation of finishing the processing of the press device, the lever is pushed out of the claw 3 by the lever 4 and carried out.

(Problems to be Solved by the Invention) However, in such a conventional work unloading device, since the lever directly contacts the work when the work is released from the work claw, this contact causes a scratch on the work surface. Etc. may be formed, and in the case of a work having a shape such as a projection at the position where it contacts the lever, the projection force of the lever may be applied to this projection and the projection may be deformed or damaged. was there.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a work unloading device that can remove a work from a claw without applying an external force to the work. .

(Means for Solving the Problems) The present invention for achieving the above-mentioned object is achieved by a pair of claws provided on a moving member that moves from a processing position of a processing machine that forms a work of a predetermined shape to an external carry-out position. In the work unloading device for gripping the finished work and unloading it to the external unloading position, the base part of the moving member is attached to the processing machine body, and the end face in the transport direction of the base part of the moving member is a flat surface, On the flat surface, a pair of L-shaped claws integrally formed with a gripping portion extending in the transport direction and a connecting portion extending in a direction perpendicular to the gripping portion are rotatably attached by a shaft. One end of each of the connecting portions of the claws is rotatably connected to each other, and the pair of claws are repelled by a spring so that the connecting portions are located along the flat surface, and One lever from the nail The processing machine main body stops the movement of the lever accompanying the movement of the moving member so that the lever abuts when the work reaches the external carry-out position, and resists the elastic force of the spring. It is characterized in that a stopper for opening the pair of claws is provided.

(Operation) The present invention configured as described above operates as follows.

First, in the work unloading device, the connecting portion of the pair of claws is always repulsed by the spring, and is located at a position along the flat surface of the processing machine body. Then, according to the processing end operation of the processing machine, the moving member moves in the transport direction,
The work is gripped between the gripping portions of the pair of claws. Each of the grips is moved by the moving member while gripping the work,
When the lever is moved to a predetermined outside carry-out position, the lever comes into contact with the stopper. Forward movement of the lever is hindered by a stopper, and one of the claws is rotated about the shaft against the elastic force of the spring. The rotation of the claw causes the grip of the other claw to rotate through the connecting part and the connecting part of the other claw to open the pair of claws. As a result, the work is released from the claw without being pressed by the external force and is carried out to the outside carry-out position. Therefore, the work is not scratched when it is detached from the claw, and there is no fear that the work will be rejected by the work unloading device. After that, the moving member is returned to the original position, and in this case, the lever is also returned by the elastic force of the spring. However, since the pair of claws are L-shaped with the gripping part and the connecting part forming a right angle, the connecting part of each claw follows the flat surface of the moving member without taking any measures. Stop at a position like
It waits at a predetermined position to perform the work holding action again.

(Example) Below, the workpiece unloading device which concerns on this invention is demonstrated in detail based on drawing.

FIG. 1 is a side view of a main part of a work unloading device according to the present invention, and FIG. 2 is a state diagram showing a state when a work is detached from the unloading device. In FIGS. 1 and 2, the same members as those described in the related art are designated by the same reference numerals.

As shown in FIG. 1, in the work unloading device according to the present invention, a pawl 10 capable of opening the work 1 is attached to a feeder 2 similar to the conventional one.

The feeder 2 is attached to the main body of the press device (not shown) so as to move in the conveying direction of the work 1 in accordance with the operation for finishing the work of the press device as in the conventional case.

In this feeder 2, the end surface of the feeder main body A in the conveying direction is a flat surface 2a, and a claw 10 for holding the work 1 is attached to the flat surface 2a.

The claw 10 is composed of an upper claw 11 that supports the upper part of the work 1 and a lower claw 12 that supports the lower part of the work 1, as shown in the drawing. The upper claw 11 and the lower claw 12 extend in the transport direction. The gripping portion 13 and the connecting portion 14 extending in a direction perpendicular to the gripping portion 13 are each formed in an L shape.

The upper claw 11 and the lower claw 12 are rotatably attached to the feeder 2 about a shaft 15 provided at a position where the grip 13 and the connecting portion 14 intersect. Also, the connection part of the upper claw 11
The screw 14 that engages with the long groove 16 formed in the connecting portion 14 of the lower claw 12 is provided on the upper claw 14. The upper claw 11 and the lower claw 12 contrast with the work 1 by the screw 17. It comes in contact with and moves away from.

Further, the upper claw 11 is formed with a lever 18 extending in the opposite direction to the connecting portion 14, and the upper claw 11 is provided with this lever.
When 18 falls in the direction opposite to the carrying direction, the gripping part 13 is rotated in the direction of separating from the work 1. At this time, by the long groove 16 and the screw 17 of each connecting portion 14, the lower claw
Similarly, 12 also rotates the gripping part 13 in the direction of separating from the work 1,
As a result, the claw 10 releases the work 1.

The upper claw 11 and the lower claw 12 are maintained in a state of gripping the work 1 by a spring 19 as shown in the figure when an external force is not applied to the lever 18.

On the other hand, the press device (not shown) is provided with a stopper 5 similar to the conventional one, as shown in FIG.

The stopper 5 comes into contact with the lever 18 when the claw 10 moves to a predetermined conveying position. From the state where the stopper 5 comes into contact with the lever 18, the feeder 2 is further moved.
Is moved in the carrying direction, the lever 18 is tilted in the opposite direction to the carrying direction. As a result, as shown in the drawing, the claws 11 and 12 are separated from the work 1 and the work 1 is separated from the claw 10.

The work unloading device configured as described above operates as follows.

First, as shown in FIG. 1, when the feeder 2 is moved in the carrying direction in accordance with the finishing operation of the press device, the pawl 10
Holds the work 1 by supporting the upper and lower ends of the work 1 at the processing position, which has been processed, by the upper claw 11 and the lower claw 12.

Then, the work 1 is conveyed to a predetermined conveyance position by moving the feeder 2 in this state.

When the feeder 2 is further moved, the stopper 5 tilts the lever 18 in the direction opposite to the conveying direction, and the upper claw 11 and the lower claw 12 which is interlocked with the upper claw 11 simultaneously move the respective holding parts 13 to the work 1.
Rotate in the direction to separate from. This makes work 1
Is separated from the claw 10 and is carried out from the processing position to the carry-out device.

Since the work 1 is separated from the claw 10 by opening the claw 10 in this way, external force is not applied to the work 1 unlike the conventional case when the work 1 is removed, and the work is not scratched and the work is carried out. The device eliminates the risk of making the work defective.

After that, the feeder 2 is returned to the original position, and in this case, the lever 18 is also returned by the elastic force of the spring 19. However, since the pair of claws 10 are formed by the L-shaped one in which the grip portion 13 and the connecting portion 14 are at a right angle, the connecting portion 14 of each of the claws 10 is connected to the feeder 2 without any means. It stops at a position along the flat surface 2a and waits at a predetermined position for another work gripping action.

(Effects of the Invention) As is apparent from the above description, the present invention has the following effects.

Depending on the finishing operation of the processing machine, the moving member moves in the carrying direction, so that the pawl holds the workpiece and carries it to the specified external carry-out position, and at this external carry-out position, the lever comes into contact with the stopper to operate. By doing so, the pawl is opened and the work is detached from the pawl. Therefore, when the work is detached from the pawl, no external force is directly applied to the work, scratches and the like do not occur, and there is no possibility of making the work a defective product.

Therefore, the work can be carried out as it is formed by the processing machine, and the quality of the work is improved.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a work unloading device according to the present invention, FIG. 2 is a state diagram showing a state when a work is detached from the unloading device, and FIGS. 3 and 4 are conventional work. It is explanatory drawing of a carrying-out apparatus. 1 ... Workpiece, 2 ... Feeder (moving member), A ... Feeder main body, 2a ... Flat surface, 5 ... Stopper, 10 ... Claw, 13 ... Gripping portion, 14 ... Connecting portion, 15 ... … Axis, 18 …… Lever, 19 …… Spring.

Claims (1)

[Claims] 1. A workpiece that has been machined by a pair of claws provided on a moving member that moves from a processing position of a processing machine that forms a work of a predetermined shape to an external unloading position is grasped, and unloaded to the external unloading position. As described above, in the work unloading device, the base of the moving member is attached to the processing machine body, the end face in the transport direction of the base of the moving member is a flat surface, and the flat surface has a gripping portion extending in the transport direction. A pair of L-shaped claws integrally formed with a connecting part extending in a direction perpendicular to the gripping part are rotatably attached by a shaft, and one ends of the respective connecting parts of the both claws can be rotated relative to each other. The pair of claws are repelled by a spring so that the connecting portion is located along the flat surface, and one lever is projected from the one claw so that the work is transferred to the external transfer position. When it reaches the lever So as to contact with each other, the processing machine main body is provided with a stopper that stops the movement of the lever accompanying the movement of the moving member and opens the pair of claws against the elastic force of the spring. The work unloading device.