JPH0614916Y2 - External burr unloading device in forging press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an outer burr unloading device in a forging press for carrying out outer burrs removed from the outside of a work generated in an automatic forging press or the like.

(Prior Art) Conventionally, burrs on the outside of a work generated in an automatic forging press are separated from the work by a burr presser attached to a ram on a burr cradle installed at a predetermined position. After that, the work is gripped by the transfer fingers that accompany the movement of the transfer bar, and every time the work is conveyed to the next process, the deburring member integrated with the transfer fingers scrapes off the burr on the burr receiving table to a predetermined place. There is. This device is disclosed in Japanese Utility Model Publication No. 62-6941 and Japanese Utility Model Publication No. 62-25027.

There is also a device that conveys the burr received in the burr receiving table by air blow.

(Problems to be solved by the invention) In the former conventional device, in addition to the burr cradle, a work cradle and a ram for holding the flash, a cylinder for activating the work cradle, etc. are required, and the equipment becomes large-scale. Along with that, equipment costs were required. Further, the work (molded product) is good for a large work, but is not suitable for a small work.

In the latter device, blowing off the burr by air blow is complicated because the burr is scattered.
It lacks stability when transported in a fixed direction.

The present invention enables reliable removal of burrs, receipt of burrs, and transfer of burrs during general vertical movement of punches and operation of transfer fingers, and the structure of the device is not large and compact. The device is also suitable for the work.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a forging press with a stripper plate 2 located near the peripheral wall of the punch 1 so that the punch 1 that has been punched is When the workpiece is lifted and pushed up from the die 4 by the knockout 5, the workpiece gripping finger 7 and the burr receiving plate 8 are provided so as to move between the punch 1 and the knockout 5, so that the workpiece is gripped for gripping the workpiece. After the burr which is gripped by the fingers 7 and scraped from the outer wall of the punch 1 by the stripper plate 2 is received by the burr receiving plate 8, the work gripping fingers 8 and the burr receiving plate 8 are moved toward the next process. A scraper provided to scrape off the burr on the burr receiving plate 8 while moving toward the next process. It is provided with a supermarket 11.

(Operation) First, with the work 3 having the outer burr 9 attached thereon being placed on the soybean 4, the punching punch 1 is lowered, and the burr 9 around the work 3 is punched by the punch 1. When punch 1 is lifted after punching, it is lifted with burr 9 attached around punch 1. The knockout 5 rises as the punch 1 rises, and lifts the work located in the die hole of the die 4. In association with this movement, the burr receiving plate 8 and the work gripping fingers 7 move between the punch 1 and the knockout 5. When the punch 1 further rises, the burr 9 attached to the outer periphery of the punch 1 is scraped off by the stripper plate 2 and the burr receiving plate 8 located below
Accepted on. On the other hand, the workpiece gripping finger 7
Grips the work.

While the work gripping fingers 7 and the burr receiving plate 8 move to the next process, the burr 9 on the burr receiving plate 8
Is scraped into shoot 10 by scraper 11.

(Example) The Example of this invention is described based on drawing.

The embodiment shows a case where it is used in a transfer press in which a cold coining process and an external deburring process for punching out external burrs generated during cold coining are continuously performed. of course,
Not limited to cold working, it can be used for transfer presses that require burr conveyance in hot forging and other press working.

As shown in FIG. 1, the apparatus of the present invention has a die 4 provided with a knockout 5 which can be raised and lowered so as to face a punch 1 which is provided so as to be raised and lowered. The punch 1 slides up and down in the hole 2a of the stripper plate 2 attached to the machine frame. It suffices for the stripper plate 2 to be able to scrape off the burrs attached to the outer periphery of the punch 1, and therefore the tips of the plurality of stripper plates 2 may be provided so as to be arranged close to the outer periphery of the punch 1.

The knockout 5 arranged so as to face the punch 1 always takes a position retracted from the die 4. The knockout 5 is operated so as to raise the work 3'from the die 4 to a proper height when the punch 1 is lowered for punching the burr and then raised again (see FIG. 2). On the opposite sides of the pair of transfer beams (transfer bars) 6, a work gripping finger 7 for gripping the work 3'and a burr receiving plate 8 are provided in a protruding manner, and the transfer beam 6 includes a punch 1 and a knockout 5. In the meantime, it is provided so that it can be moved to the work 3 ', and can be moved to the next step as shown in FIG.

When the work 3'is held by the work-holding fingers 7, the burr 9 attached to the outer periphery of the punch 1 is scraped off by the stripper plate 2 onto the burr receiving plate 8 as shown in FIG. ing.

When the burr is received on the burr receiving plate 8, the transfer beam 6 moves to the right as shown in FIG.
The burr 9 on the burr receiving plate 8 collides with the scraper 11 fixed to the machine frame or the like above the moving line of the transfer beam 6, and the movement thereof is stopped. Then, at the same time when the burr receiving plate 8 passes through the center of gravity of the burr 9, the burr 9 rotates about the center of gravity as a fulcrum and drops almost vertically into the chute 10 arranged below the burr 9. After that, the burr receiving plate 8 and the fingers 7 are transferred to the transfer beam 6
When the work is moved to a position above the work cradle 12 in the next step, the fingers 7 open the work 3 ′, pass the work 3 ′ onto the work cradle 12, and return to the standby position.

(Effect) Since the present invention has the above-mentioned structure, it has a structure in which the burr receiving plate, the scraper, and the stripper plate are attached to the conventional device, so that the device can be configured without complicating it and is stable. The collected burrs can be collected.

[Brief description of drawings]

Each drawing is a view showing a main part of the device of the present invention. Fig. 1 is a vertical sectional front view showing a state where a burr of a work is punched by a punch, and Fig. 2 is a vertical sectional front view showing a state where a burr is punched by a punch. FIG. 3 is a vertical cross-sectional front view showing a state where a work is held by fingers for holding the work, and FIG. 4 is a vertical side view showing a state in which burrs on a burr receiving plate are scraped off by a scraper. 1-Punch 2-Stripper plate 3,3'-Workpiece 4-Dice 5-Knockout 6-Transfer beam 7-Workholding finger 8-Burr receiving plate 9-Burr 10-Shoot 11-Scraper

Claims (1)

[Scope of utility model registration request] 1. A forging press comprising a die 4 having a knockout 5 which can be raised and lowered so as to face the punch 1 which can be raised and lowered, and a stripper plate 2 which is positioned near a peripheral wall of the punch 1. When the punch 1 that has completed punching is lifted and the work is pushed up from the die 4 by the knockout 5, the work gripping finger 7 attached to the transfer bar 6 and the burr receiving plate 8 are attached to the punch 1 Is provided so as to move between the knockout 5 and the knockout 5, so that the work is gripped by the work gripping fingers 7, and the burr scraped off from the outer wall of the punch 1 by the stripper plate 2 is processed by the burr receiving plate 8. After receiving, the work gripping fingers 7 and the burr receiving plate 8 are subjected to the next step. Only provided so as to move, moreover,
An outer deburring device in a forging press, characterized in that a scraper 11 for scraping off the burrs received on the burr receiving plate 8 is provided on the way to the next step. .