JPH05237U - Movable scrap press of press die - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a movable scrap chute that does not require a claw in order to prevent wear of a claw having a thin tip and wear and to deteriorate durability as in the prior art. [Structure] The chute 21 is obliquely attached to the lower mold 3 and is biased to the right by a spring 27. The L-shaped lever 32 is slidably attached to the lower die 3 around the shaft 31, and is connected to the chute 21 via a connecting rod 22 fixed to the chute 21. The lower end of the pusher 33 fixed to the upper die 4 contacts one side 32c of the lever 32, and when the upper die 4 descends, the one side 32c of the lever 32 is pushed down to rotate the lever 32 clockwise. The chute 21 moves to the left against the spring 27.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a movable scrap chute attached to a press die.

[0002]

[Prior Art]

 If the die height of the mold is low, the scrap chute for discharging scrap cannot be tilted sufficiently, and it is not possible to ensure a tilt angle so that the scrap falls under its own weight. It needs to be scraped out.

As shown in FIG. 3, when the scrap on the chute 1 A fixed to the lower die is discharged by the compressed air ejected from the nozzle 2, the scrap is scattered when the scrap is light and cannot be discharged when the scrap is heavy. . 3 is a lower mold and 4 is an upper mold.

Therefore, as shown in FIG. 4, a movable scrap chute is widely used in which the chute is moved as the upper die moves up and down to discharge scrap on the chute. Reference numeral 1 denotes a chute, which is provided at an angle, a fixed guide pin 5 is fitted in a long groove 1a provided at the left end portion thereof, and a pin 6a provided at the right end of an engaging plate 6 fixed at the right end is It is connected to the lower end of the swinging member 7 in the shape of a letter. The L-shaped swinging member 7 can swing around a shaft 9 supported by a bracket 8 (U-shaped when viewed from above) fixed to the lower mold 3.

A claw holding member 10 is fixed to the right end of the upper die 4, and a claw 12 is attached to the lower end of the upper mold 4 by a pin 11. As the upper die 4 moves up and down, the claw 12 engages with the engaging portion 7a, which is the short side of the L-shaped rocking member 7, to rock the rocking member 7 around the shaft 9.

That is, when the upper die 4 rises, the claw 12 moves upward without rotating around the pin 11, and in the middle of that, the swing member 7 rotates around the shaft 9 in the counterclockwise direction. Rotate. When the upper die 4 descends from the upper limit position, the tip (left end) of the claw 12 abuts and slides on the engaging portion 7a of the swinging member 7, and rotates clockwise around the pin 11 to escape. When the engagement with the engagement portion 7a is released, the spring (not shown) rotates counterclockwise to return to the posture indicating the 9 o'clock position in the figure.

In this way, the L-shaped swing member 7 moves the chute 1 as shown by arrows A and B each time it is rocked by the pawl 12 as the upper die 4 moves up and down, and the scrap on the chute is moved. Discharge.

[0008]

[Problems to be solved by the device]

 In the conventional movable scrap chute shown in FIG. 4, the claw 12 having a sharp tip rocks the L-shaped rocking member 7 as the upper die 4 moves up and down. When the upper die 4 rises, the tip of the pawl 12 catches the engaging portion 7a of the swinging member 7 and moves upward, and when it rises to a certain extent, the tip (left end) of the pawl 12 engages the engaging portion 7a. When the tip of the claw 12 is separated from the engaging portion 7a by sliding relative to the tip (right end) of the pin 11 and rotating clockwise to escape, a spring (not shown) causes counterclockwise rotation. Turn to and return to the 9 o'clock position.

As described above, the thin and pointed tip of the claw 12 engages with the engaging portion 7 a of the swinging member 7 to slide, and repeats the rotation. On the contrary, the claw 12 is restricted in shape because it rotates, and its tip is thin and sharp.

Therefore, there is a problem that the tip of the claw 12 is easily worn and the durability is poor. Then, this invention aims at providing the press type movable scrap shoot which does not have such a problem.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the press-type movable scrap shoot according to the present invention is capable of moving a tilted chute (21) according to the vertical movement of an upper mold (4) to remove scrap on the chute. In the movable scrap chute to be discharged, one end (32a) of the L-shaped lever (32) swingably attached to the lower mold (3) is connected to the chute (21) via a connecting rod (22), It is characterized in that the lower end of the pusher (33) fixed to the mold (4) is brought into contact with one side (32c) of the L-shape which is the other end of the lever (32).

[0012]

[Action]

 Whenever the upper die moves up and down, the pusher (33) pushes down one side (32c) of the lever (32) to swing the lever. Therefore, the chute (21) is moved via the connecting rod (22).

[0013]

【Example】

 In FIGS. 1 and 2, 3 is a lower mold, 4 is an upper mold, and 21 is a shoot arranged obliquely and has a trough shape as a whole. 21a is a long groove provided in the chute 21, 22 is a connecting rod whose lower end is welded to the chute 21, 23 is an iron plate fixed under the lower mold 3, 24 is an L-shaped support standing on the upper surface of the iron plate 23. The bottom surface of the chute 21 is slidably mounted on the upper end of the support 24.

Numeral 25 is a U-shaped bracket fixed to the lower mold 3, and both ends of a rod 26 extending in a direction perpendicular to the paper surface in FIG. 1 are welded and fixed to the bracket 25. The rod 26 is attached to the chute 21. It penetrates through the long groove 21 and guides the chute 21 so that it can move in the longitudinal direction (tilt direction) thereof.

Numerals 3a and 3b are hollow holes provided in the lower mold 3, and a chute 21 is arranged so as to penetrate one hole 3a. Numeral 27 is a chute return spring which constantly urges the chute 21 to the right, one end of which is hooked to a pin 28 fixed to the bottom surface of the chute 21 and the other end of which is hooked to a pin 29 fixed to an iron plate 23.

Reference numeral 30 denotes a U-shaped bracket fixed to the lower mold 3 (when viewed from above), 31 denotes a shaft having both ends fixed to the bracket 30, and the base of the L-shaped lever 32 is rotated around the shaft 31. It is movably fitted. Reference numeral 32b is a groove provided at one end (32a) of the lever 32, and the connecting rod 22 is fitted and connected to the groove 32a.

Reference numeral 33 denotes a pusher fixed to the upper die 4, and its lower end is in contact with one side 32c of the L-shape which is the other end of the lever 32. A lever return pin 34 is always urged to the right by a lever return spring 35 to urge the lever 32 counterclockwise.

When the upper die 4 is at the position 4'indicated by the chain double-dashed line in FIG. 1, the lever 32 swings counterclockwise as indicated by the reference numeral 32 ', and the side 32c is designated by the reference numeral 32c'. In position. The chute 21 is moved to the position of reference numeral 21 'by the force of the chute return spring 27.

When the upper die 4 descends from this state, the lower end of the pusher 33 pushes down one side 32c of the lever 32 from the position indicated by the reference numeral 32c ', so that the lever 32 swings clockwise around the shaft 31. Then, the chute 21 is moved via the connecting rod 22 from the position indicated by the reference numeral 21 'to the position indicated by the left solid line.

In this way, the chute 21 repeats left and right movements in accordance with the vertical movement of the upper mold 4, and the scrap on the sewage is discharged to the right. In the illustrated embodiment, since the connecting rod 22, the lever 32, the pusher 33, and the like are collectively arranged on the lower end (right end) side of the chute 21 that is inclined, the chute 21 is the meat of the lower mold 3. The hole 3a is provided so as to penetrate only the hole 3a, and the other hole 3b is not always necessary for the arrangement of the chute 21. Therefore, the hole 3a can be eliminated and the strength of the lower mold 3 can be improved accordingly.

[0021]

Since the press-type movable scrap chute according to the present invention is configured as described above, the lower end of the pusher (33) only pushes down one side (32c) of the lever 32, Moreover, the tip shape is not thin and sharp. Therefore, it is possible to prevent the slender sharp tip like the conventional claw 12 from sliding and wearing to cause malfunction, and it is possible to realize a movable chute with excellent durability.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the embodiment shown in FIG.

FIG. 3 is a vertical sectional front view showing an example of a conventional technique.

FIG. 4 is a vertical sectional front view showing another example of the prior art.

[Explanation of symbols]

 3 Lower mold 4 Upper mold 21 Chute 22 Connecting rod 32 Lever 32a One end 32c One side 33 Pusher

Claims (1)

[Claims for utility model registration] 1. A movable scrap chute for discharging scraps on a chute (21), which is inclined, in response to the vertical movement of the upper mold (4). One end (32a) of an L-shaped lever (32) swingably attached to (3) is connected to a chute (2) via a connecting rod (22).
1) and the pusher (3) fixed to the upper mold (4).
A movable scrap sheet of a press die, wherein the lower end of 3) is brought into contact with one side (32c) of the L-shape which is the other end of the lever (32).