JPS58202926A - Carrying-out device of scrap or the like in press die - Google Patents

Abstract

PURPOSE:To exactly carry out a scrap by an impulse at the time of rocking up and down, by always energizing upward a receiving part of a chute for receiving the scrap, and making the receiving part descend by interlocking with descent of a punch. CONSTITUTION:When an upper holder 6 descends, a pusher pin 22 hits against the upper end of a slide bar 18, depresses it, and a chute 13 is depressed against energizing of a spring 17 and is rocked clockwise. Subsequently, when a punch reaches the bottom dead center, the trimming of the outside circumference and pierce-working are executed, and a scrap drops on the upper face of the inside part of the chute 13. Subsequently, when the upper holder ascends, the inside end of the chute 13 is depressed by elastic force of the spring 17, following which a flange 21 of the ascending slide bar 18 hits against the lower face of a lower holder 1 and stops. As a result, the chute 13 is steeply inclined, and a dropped scrap S jumps toward the outside. Accordingly, even in case of an angle at which the chute 13 does not naturally slide down, vibration is given to the chute 13 by a shock, and the scrap S moves on the chute 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for discharging scraps and the like in a press mold.

When using a press die to punch a hole in a workpiece with a pierce punch, or when punching a hole in a workpiece with a pierce punch at the same time as processing the workpiece into a predetermined shape, scraps are cut out from the workpiece when the workpiece is processed. Therefore, it is necessary to carry this out of the press mold.

FIG. 1 is a diagram showing a conventional press die. A punch 2 is fixed to the upper part of a lower holder I, and the lower holder 1 and the punch 2 constitute a lower die. A button die 3 is incorporated in the upper surface of the punch 2, and the upper die is formed by a pad 5 incorporating a piercing punch that punches a hole in the workpiece W in cooperation with the button die 3, and an upper holder 6. It is configured. The upper holder 6 can be moved up and down by a vertical movement means (not shown), and the pad 5 can be moved relative to the upper holder 6, and there is an elastic body 7 such as a coil spring between them. is installed. The pierce punch 4 is fixed to the upper boulder 6 by a punch retainer 8, and when the upper holder 6 descends, the pad 5 clamps the workpiece W between it and the punch 2, and then the upper holder 6 continues to descend. The piercing punch 4 protrudes and makes a hole in the workpiece W.

The vertical movement of the upper holder 6 is guided by a guide post 9.
The vertical movement of the pad 5 relative to the upper holder 6 is guided by the wear plate 10.

Scrap S cut out from workpiece W during press processing
In order to discharge scraps to the outside and collect them, in the conventional press die shown in FIG. The chute 11 is slanted so that it slides down and is carried out.

However, in the case of the unloading device using the chute 11, depending on the configuration of the press die, it is not possible to give the chute 11 a sufficient inclination angle due to reasons such as the need to reduce the height of the lower holder 1. As a result, there was a drawback that the scrap could not be slid down by its own weight.

Therefore, as a countermeasure to eliminate the above drawback, the second
There is a press mold shown in the figure. In FIG. 2, parts that are common to parts in FIG. 1 are given the same reference numerals. In this press mold, a conveyor 12 extending from the bottom of the punch 2 constituting the lower mold to the outside is installed on the lower holder 1 in the direction of water, and the scrap S that has fallen onto this conveyor 12 is carried out to the outside by the drive of the conveyor 12. This is how it was done.

If the conveyor 12 is used, the drawbacks caused by the chute 11 can be solved to some extent, but a motor is required to drive the conveyor 12, which increases the structure and manufacturing cost.

The present invention has been made in view of these conventional problems.The present invention is designed to remove scraps, etc. cut out from a workpiece during machining, so that the scraps, etc. can be carried out smoothly even at an angle smaller than the angle at which they could fall due to their own weight. The receiving receiver attaches a chute having a part to the lower die so as to be able to swing in the vertical direction, and normally the receiver urges the part upward and swings the chute in conjunction with the lowering of the upper die to Scrap conveyance in a press die, in which scrap is reliably conveyed even when a sufficient inclination angle cannot be given when installing the chute, by attaching a connecting means for lowering the receiving part to the chute. The purpose is to provide a device.

Next, an embodiment of the present invention will be described with reference to FIGS. 3 and 4, using the same reference numerals for parts common to those in FIGS. 1 and 2.

FIG. 3 shows a vertical cross section of the press machine to which the present invention is applied at the time of completion of press processing. The chute 13 is attached to the bearing part 15 by a pin 16, and is capable of swinging in the upward F direction. The upper end of a coil spring 17 installed in the lower holder l is in contact with the lower surface of this chute 13 closer to the inner end than the pin 16, and the receiver for receiving the scrap S of the shoe 13 has its inner end side as a part. It always has an upward force.

The lower holder 1 has a slide no.
The lower end of the slider 18 is connected to the inner end of the chute 13 with respect to the bin 16 by a pin 20.

The lower holder 1 of the slide par 18 is provided with a flange 21, and when the slide par 18 is pushed up by the elastic force of the coil spring 17, the flange 21 of the lower holder l hits the -F of the chute 13. The limit for swinging in this direction is set.

The upper end of the slide par 18 is arranged so that the lower end of a butsushabin 22 fixed to and hanging down from the lower surface of the upper holder 6 can come into contact with the slide par 18 and the butsuya pin 2.
2 constitutes a connecting means. For this reason, shoot 1
As the upper holder 4 lowers, the coil spring 17
It is now descending while opposing the affiliated forces of still,
The other components of the press mold are almost the same as those shown in FIG. 1, except that a sectional die 23 that cuts the end of the workpiece W in cooperation with the punch 2 is attached to the upper holder 6, so a description thereof will be given here. Omitted.

Next, the operation of the embodiment shown in FIG. 3 will be explained.

When the upper boulder 6 is lowered by a drive means (not shown), the button pin 22 hits the upper end of the slider 18 and pushes it down. When the slide par 18 descends, the chute 13 connected to its lower end is pushed down against the biasing force of the coil spring 17, and the chute 13 swings clockwise in the figure around the pin 16.

On the other hand, when the upper mold reaches the bottom dead center, the outer periphery trimming and piercing are performed, and the resulting scraps fall onto the upper surface of the inner end (receiver part) of the chute 3 as shown in the figure.

When the press work is completed and the upper boulder 6 rises, the inner end of the chute 13 is pushed up by the elastic force of the coil spring 17, and the 7th part of the slide par 18 that rises accordingly.
The lunge 21 hits the top surface of the F bolt 1 and stops. As a result, chute 13 is in a steeply inclined position, and its inner end! ,, the scraps S falling on the upper surface jump toward the outer end. Sukshin for this? °s
The unloading is due to the impact caused by the inclination angle of the unit 13 due to the weight of the scrap itself, the impact when the Yabin 22 hits the slide bar river 8, and when the flange 21 of the slide par 18 hits the bottom surface of the lower boulder 1). Since vibration is applied to the scrap S on the chute 13, the scrap S on the chute 13 shifts in every processing cycle, and the accumulation of these jumping and shifting movements is ensured.

Fig. 4 shows an embodiment in which the present invention is applied to a press die equipped with a cam mechanism, and similarly to Fig. 3, it shows a longitudinal section at the time of completion of press working, and the same members as Fig. 3 are shown. The same symbols are used. In the figure, the piercing punch 4 is inserted into the slide cam 2 via the punch retainer 8.
4, and this slide cam 24 is capable of sliding on a wear plate 25 fixed to the lower boulder 1 in the left-right direction in FIG.

A driver cam 26 is provided on the lower surface of the upper holder 6.
(The slanted surface 26a attached to the lower front end of the driver cam 26 is connected to the slide cam 2.)
The inclined surface 24a formed at the rear end of the upper part of the upper holder 4 can be brought into contact with the inclined surface 24a, and as the upper holder 6 descends, the slide cam 24 is driven in the left-right direction in the figure.

On the other hand, at the upper end of the slide par 18, a passive surface 28 is formed which is inclined so as to come into contact with a suppressing part 27 protruding forward at the lower front end of the slide cam 24, and when the slide cam 24 moves forward, the passive surface 28 is suppressed. The driven surface 28 is pressed downward at the portion 27 and is formed to be flange-shaped so that the slide par 18 is lowered. Incidentally, the slide par 18, the slide cam 24, and the driver cam 26 constitute a connecting means.

Therefore, in the embodiment shown in FIG. 4, when the holder 6 descends to
6a comes into sliding contact with the inclined surface 24a of the slide cam 24 and descends, so the slide cam 24 is moved forward, and as the slide cam 24 moves forward, the slide par 18 is pushed down by its suppressing portion 27, similar to the case of the above-mentioned embodiment ψ11. Then push down the inner end of the chute 13.

When the upper holder 6 rises after the press work is completed, the inner end side of the chute 13 is pushed up by the force of the coil spring 17, and the inclined passive surface 2B of the upper end of the slide par 18, which rises accordingly, pushes the suppressing part 27. Slide cam 2 through
4 is pushed back, and when the 7 lunge 21 of the slide par 18 hits the lower surface of the lower holder 1, it stops and the chute 13 is placed in an inclined state.

Although the present invention is a device for transporting scrap S generated during press processing to the outside of a press mold, in the case of a press mold configured such that small press-formed products fall onto the chute 13, the scrap S generated during press processing can be carried out as is. Needless to say, it can be used as a product removal device. In addition, in the above two embodiments, the shoe 13 is housed in the lower holder l, so there is no problem of interference with the iron hand, etc. that carries the workpiece from the press mold, and the shoe 13 is placed in the press line. It can be ideal for automation.

The material, scrap S, etc. are designed to gradually move on the chute 13 with each press, and the noise caused by sliding contact between the thread 13 and the scrap S is reduced.

As described in detail above, according to the press mold of the present invention, a chute having a receiving part for receiving scraps etc. cut out from a workpiece during processing is attached to the lower mold so as to be swingable in the vertical direction, and the chute is attached to the lower mold so as to be able to swing in the vertical direction. A connecting means is attached to the chute for urging the upper part upward and swinging the chute in conjunction with the lowering of the upper die to lower the receiver part.
Scraps, etc. falling into the chute can be caused to jump or slide down due to the vibration of the 10F swing of the chute and the impact at the start and end of the vertical swing, and the accumulation of these causes the scrap etc. to be carried out, thereby preventing them from falling naturally into the chute. Therefore, even if there is not a large space in the vertical direction at the bottom of the press mold, good unloading can be achieved. Further, unlike the use of a conveyor, there is no need to install another drive source, and since the movement of the upper holder is utilized, the structure is simple and can be manufactured at low cost.

[Brief explanation of the drawing]

Figures 1 and 2 are longitudinal sectional views showing a conventional unloading device;
FIGS. 3 and 4 are longitudinal cross-sectional views showing embodiments of the present invention. l Lower holder, 2... punch, 3... button die,
4. Earring punch, 5. Pad, 6. Upper holder, 13. Nut, 18. Slide bar, 24.
...Slide cam. Patent applicant Nissan Motor Co., Ltd.

Claims (1)

[Claims] In a press die for processing a workpiece, which has a fixed lower die and an upper die that can move vertically relative to the fixed lower die, a chute having a receiving part for receiving scraps etc. cut out from the workpiece during processing is moved in the vertical direction. The connecting means is configured to swingably attach to the lower die and normally urge the receiver part upwardly, swing the chute in conjunction with the lowering of the upper mold, and lower the receiver part. A device for carrying out scraps, etc. in a press mold, characterized by being attached to a chute.