JPS6121133Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scrap discharge device in a press machine.

Conventionally, various devices have been proposed for discharging cutting die scrap generated when pressing an automobile body to the outside of the die. For example, some machines have a shooter that is inclined at a predetermined angle at the position where the scraps fall, but since the angle of inclination of the shooter cannot be large due to the relationship between the upper and lower dies on the side of the press, the scraps on the shooter are The drawback is that it is not discharged smoothly. Conventionally, therefore, scraps have been discharged using conveyors, vibrators, etc., but this requires a separate driving source and is expensive.

The present invention was created in view of these drawbacks.
It is an object of the present invention to provide a scrap discharging device for a press machine which can smoothly discharge scrap even if the angle of inclination is small and does not require a separate drive source.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.

Figures 1 and 2 show a press device, where 1 is a lower mold, 2 is an upper mold, 3 is a guide shaft provided upright on both sides of the press device, and 4 is provided on both the front and rear sides of the lower mold 1. This is a set of multiple scrap cutters.

Reference numeral 5 denotes a pair of scrap discharge devices provided in the scrap conveyance section on the side side of the press machine, and this discharge device is equipped with a fixed guide 6 and a movable guide 7. That is, the fixed guide 6 has a plurality of plates tilted at a predetermined angle on the upper part, arranged in a step-like manner with a certain gap between them, and has a gate-shaped cross section as shown in FIG. is set up. on the other hand,
The moving guide 7 is formed by connecting a plurality of plates arranged on the upper surface of each plate of the fixed guide 6 with connecting bolts 9, and is slidable with respect to the fixed guide 6. The fixed guide 6 has a long hole 6 in its inclined direction.
a is bored, and the connecting bolt 9 is slidably inserted into this elongated hole 6a. Therefore,
The movement guide 7 is moved by the length of the elongated hole 6a, that is,
The tip can move between a position where the tip exceeds the tip of the fixed guide 6 and a position where it is retreated from the tip of the fixed guide 6. In FIG. 3, reference numeral 10 denotes a bush fitted onto the connecting bolt 9 in order to provide slidability between the connecting bolt 9 and the elongated hole 6a.

A spring 12 is stretched between the lower surface of the movable guide 7 and the device fixing portion 11, and the movable guide 7 is always urged upward in the direction of inclination by the spring 12.

A passive cam 13 having an inclined cam surface 13a in the opposite direction to that of the fixed guide 6 is integrally provided on the uppermost plate of the moving guide 7, while an inclined cam of the upper and lower driven cams 13 is provided on the lower surface of the upper die 2. A drive cam 14 is mounted having a cam surface 14a corresponding to surface 13a. As the drive cam 14 descends, the cam surfaces 13a and 14a come into sliding contact, and the passive cam 13 moves downward in the inclined direction. Incidentally, when press working is not performed, the drive cam 14 and the upper mold 2 are in the position shown by the dashed line in FIG. 2.

Next, the operation of the scrap discharging device constructed as described above will be explained.

Now, when the metal plate 15 is placed on the upper surface of the lower die 1 and pressing is performed by lowering the upper die 2 from above, the excess outer circumferential portion of the metal plate 15 will be scraped on both the upper and lower sides in FIG. The scraps are cut into small pieces by the cutter 4 and carried out by a conveying means (not shown), and fall onto the upper surface of the scrap discharging device 5 as scraps 16 on the sides, that is, on both left and right sides in FIG. When the pressing is finished, the upper die 2 is raised, and the pressed metal plate 15 is carried out by a conveying means (not shown). In the above operation, as the upper mold 2 descends, the drive cam 14 comes into sliding contact with the passive cam 13, and the movement guide 7 moves downward due to the inclination of the cam surfaces 13a and 14a, and the upper surface of the scrap discharging device 5 is moved downward. Move the scrap 16 downward by a certain pitch. and,
As the upper mold 2 rises at the end of the press, the downward pressing force on the moving guide 7 is released, so that the movable guide 7 instantly returns upward due to the biasing force of the spring 12. At this time, the movable guide 7 supporting the lower surface of the scrap 16 is suddenly removed, so that the scrap 16 slides downward due to its inertia.
Moreover, when the movable guide 7 returns, the metal plate 15 also tries to move back slightly, but in this case, the fixed guide 7
The tip step part functions as a stopper. In the manner described above, the scrap 16 is discharged out of the press.

Generally, when discharging scrap using an inclined stationary shooter, the minimum
Although an inclination angle of 25° is required, in the case of the present invention, the tip of the plate of the movable guide 7 can be moved to a position beyond the tip of the plate of the fixed guide 6. Sufficient discharge performance can be obtained by setting the moving guide 7 at an inclination angle of 15 degrees.

As is clear from the above explanation, according to the present invention, the moving guide moves the scrap in the falling direction with each stroke of the press mold, and then returns suddenly to slide the scrap down. Since the step at the tip of the guide functions as a stopper against the retreat of the scrap, the scrap can be reliably dropped and discharged even if the inclination angle of the fixed or movable guide is small. Therefore, it is suitable for cases where there is no large space in the vertical direction, such as on the side of a press device. Moreover, since the driving force of the press mold is used to move the moving guide, a separate driving source is not required, which has the effect of reducing the cost of the apparatus.

[Brief explanation of the drawing]

FIG. 1 is an overall plan view of a press apparatus according to the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is an end view cut along the line -- in FIG. 2. 5... Scrap discharge device, 6... Fixed guide, 7... Moving guide, 9... Connection bolt, 11
... Device fixing part, 12 ... Spring, 13 ...
Passive cam, 13a... Inclined cam surface, 14... Drive cam, 16... Scrap.

Claims (1)

[Scope of utility model registration request] In a scrap discharging device that conveys scrap generated by press processing to the outside of a press machine, a fixed guide in which a plurality of plates are arranged in a stepped manner and inclined at a predetermined angle is installed in the scrap conveyance section of the press machine, and this fixed guide Then, move the movable guide formed by connecting the plates arranged on the upper surface of each plate of the fixed guide to a predetermined position between a position where the tip exceeds the tip of the fixed guide in the inclination direction and a position retreating from the tip of the fixed guide. A spring is disposed between the movable guide and the device fixing part, and supports the movable guide in a range movable manner and always biases the movable guide upward in the inclination direction.
A passive cam having a passive cam surface having an inclined cam surface in the opposite direction to that of the fixed guide is provided integrally with the top plate of the moving guide, and is attached to the press device so as to be movable up and down, and when it is lowered, it slides against the passive cam. 1. A scrap discharge device for a press machine, characterized in that a drive cam is provided for moving a moving guide in contact with the scrap discharging device.