JP2552451Y2 - Press machine equipped with debris up prevention device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press machine provided with a device for preventing scum climbing.

[0002]

2. Description of the Related Art Conventionally, various devices have been known as a device for preventing scum rising in a turret punch press, for example.

[0003] First, it is known to attach an ejector pin or a kicker pin to a punch, or to provide an inverted shear angle. It is also known to use an air blow mold for the punch.

[0004] Second, the straight portion of the die is lengthened, and a scratch is made below the pass line of the straight portion of the die using an electric pen or the like. It is also known to make the area near the edge smaller than the edge of the die.

Third, it is also known to attach a vacuum device to a disk support supporting the bottom surface of the lower turret at the time of punching to suck scraps.

[0006]

In the first device as a device for preventing dregs rising, which is known in the prior art, an ejector pin or kicker pin is attached to a punch, a reverse shear angle is provided, and air is applied to a punch. Although a blow mold is used, there is no point in the overtaking process that requires a thin punch. In addition, such as an air blow mold has a complicated structure and is expensive.

[0007] Next, in the second apparatus, the straight portion of the die is lengthened, scratches are made slightly below the pass line of the straight portion of the die, or the size is smaller than the cutting edge of the die. If the scum is uniformly caught when the punch is lifted, the scum can be prevented. However, if the scum is partially caught and the scum becomes oblique, a part of the scum jumps out to the upper surface of the die to cause a problem. In particular, the above-described inconvenience is likely to occur when the waste is warped upward.

Further, in the third device, as a method of attaching the vacuum device to the disk support, since a space for taking out the waste is provided considerably below the disk support, the vacuum degree does not increase and the effect is small. There is a problem to say.

In view of the above problems, an object of the present invention is to provide a press machine provided with a dregs rising prevention device using a vacuum device which can cope with overtaking and has a large effect of preventing dregs from rising obliquely. To provide.

[0010]

In order to achieve the above object, the present invention provides a punch and a die selected from a plurality of punches mounted on an upper holder and a plurality of dies mounted on a lower holder. A press machine that moves the workpiece to a processing position and presses the work in cooperation with the punch and the die, wherein the pressed scum comes up on the die as the punch rises. In order to prevent the above problem, a support having a suction hole communicating with the vacuum is provided between the bottom of the lower holder and the lower frame at the processing position, and the tip of the support comes into contact with the bottom surface of the lower holder, and is vertically movable. And a plurality of roller-shaped shutters which are free to roll and are constantly urged upward by an elastic body. It is.

[0011]

By using a press machine equipped with a device for preventing dregs climbing up according to the present invention, first, the upper and lower holders are moved to select a desired punch and die, indexed to a processing position and positioned. Is done.

During the movement, the bottom surface of the lower holder
Since the shafts at both ends of the shutter provided on the support overcome the urging force of the elastic body and are constantly pressed downward, the upper end of the shutter is rolled to the bottom of the lower holder and does not damage each other. Further, even if the scraps are pinched, the elastic body is bent and rolls while escaping, so that they do not damage each other.

During this time, the desired working position of the work is also positioned between the punch and the die, so that when the punch is lowered, press working is performed in cooperation with the die.

Further, even when the punch and the die are positioned at the processing position and stopped, the roller-shaped shutter is pushed upward by the urging force and the tip is in contact with the lower holder. Therefore, when the hole leading to the vacuum of the support is evacuated, the degree of sealing is increased by the roller-shaped shutter, so that the vacuum effect is increased and the scum is strongly sucked, thereby preventing the scum from rising.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

First, although known, an outline of a turret punch press (press machine) 1 as a press machine will be described with reference to FIG. That is, the turret punch press 1 having the frame 5 having the foot portion 3 includes:
A fixed table 9 fixed to the lower frame 7 supporting the work W and a work positioning device 11 for positioning the work W are provided. Furthermore, a plurality of punches 1
3 is mounted on the circumference, and the rotating shaft 17 is mounted on the upper frame 15.
Upper turret (upper holder) supported rotatably on
9 and a lower turret (lower holder) 25 in which a plurality of dies 21 are mounted on the circumference and rotatably supported by a rotating shaft 23 on the lower frame 7. The upper turret 19 and the lower turret 25 are synchronously rotated by a single turret driving device (not shown), and a desired pair of punches 13 and dies 21 are selected to form a striker 2.
It is positioned at a processing position below the position 7.

A ram main body 29 having a striker 27 for hitting the punch 13 of the upper turret 19 is mounted on the upper frame 15 so as to be able to move up and down. Further, a disc support (support) 31 is fixedly provided between the lower frame 7 and the bottom surface of the lower turret 25 so as to receive the striking force of the striker 27 at the time of punching (pressing).

With the above structure, the turret driving device is operated to rotate the upper and lower turrets 19 and 25 so that the desired punch 13 and the die 21 are positioned at the processing position, and the work W is also placed on the fixed table 9. After the origin is positioned at the workpiece 13, the workpiece is gripped by the work clamp of the work positioning device 11, and the desired punched portion is formed by the punch 13 and the die 2.
1 are positioned so as to be sandwiched between them.

Then, when the ram body 29 is lowered and the punch 13 is hit by the striker 27, the hitting force is received by the work W, the die 21, the lower turret 25, the disk support (support) 31, and the lower frame 7. Thus, desired punching is performed on the work W.

The disc support 31 has a top surface so that the scraps (scraps) of the punched work W may be damaged by being pinched between the bottom surface of the lower turret 25 and the disc support 31. A suitable space is provided on a part of the side surface.

Therefore, as shown in FIG. 1, even if a suction hole 33 communicating with the vacuum is provided in the disk support 31 for the purpose of preventing the dregs from climbing up and connected to the vacuum device, the clearance is full and the effect is not sufficient.

Therefore, in this embodiment, a disk support assembly 35 having the appearance as shown in FIG. 3 is provided. That is, in order to support the striking force below the lower turret 25, two supports 37 provided on the inner side and the outer side in a substantially circumferential direction.
In addition to the above, two roller-shaped shutters 39 are provided in the direction of the normal line.
Are provided in contact with the inner separate block 41, and have a box shape as a whole.

The details of the shutter 39 are, as shown in FIGS. 1 and 2, a roller-like guide movably guided up and down by a stepped guide cylinder 37a provided in a vertical direction of a support 37 supported on the lower frame 7. Shutter shaft 39 of the shutter 39
A shutter bearing 43 is provided to support a. The shutter 39 is constantly urged toward the upper lower turret 25 by a plurality of springs 45. At the center of the spring 45, there is provided a flanged guide rod 47 which is integrally and vertically guided on the lower surface of the shutter bearing 43, and is provided at the bottom of the guide cylinder 37a. Hole 37
b so as to be movable up and down. In addition,
The upper part of the stepped guide cylinder 37a is screwed, the cap 49 is screwed in, the shutter bearing 43 is pressed so as not to protrude upward, and the support 37 has a slit 51 so that the shutter shaft 39a can move up and down. Has been cut.

A bottom plate 53 is provided between the bottom surfaces of the two separate blocks 41 and the lower frame 7 like the bottom plate of the box-shaped disk support assembly 35 as shown in FIG. Have been. The bottom plate 53 is provided with the suction hole 3 communicating with a vacuum device (not shown).
3 are provided. On the other hand, in FIG. 2, a through hole 55 is provided below the respective dies 21 on the bottom surface of the lower turret 25. Note that the above configuration can be further easily understood by FIG.

With the above configuration, the punch 13 and the die 21
When is in the machining position, as shown in FIGS. 1 and 2,
The support 37 of the disk support assembly 35 and the roller-shaped shutter 39 are in contact with the bottom surface of the lower turret 25 and positioned so as to surround the through hole 55 below the die 21. A separate block 41 is provided on the bottom plate 53 in contact with the inside of the shutter 39. Therefore, when the suction hole 33 is connected to the vacuum device, there is almost no gap that causes air leakage.
The degree of vacuum inside increases. Accordingly, the suction force against the waste is increased, and the waste rising phenomenon can be prevented.

Next, when the upper turret 19 and the lower turret 25 are rotated by the turret driving device in order to select the punch 13 and the die 21, as understood from FIGS. Always lower turret 25
Is pressed downward by the bottom surface of the shutter 39.
Follow the bottom surface of the lower turret 25 while rotating, so that they do not hurt each other. Further, since the rolling resistance is used, the power of the turret driving device is hardly hindered.

Therefore, during rotation of the lower turret 25, even if a residue is caught between the lower surface of the lower turret 25 and the contact point of the shutter 39, the spring 45 is bent and the shutter 39 is released downward, so that the shutter 39 is locked or damaged. There is no such thing as.
Further, as described above, the vertical movement of the shutter 39 is performed by the spring 45, so that there is no need for an electrical device or operation, and the structure is simple.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes. In the present embodiment, the turret punch press 1 has been described as an example, but a punch press movable in a linear direction or another press machine can also be used.

[0029]

As will be understood from the above description of the embodiment, the roller-shaped shutter supported by the support is constantly urged upward, and the shutter forms a suction hole communicating with the vacuum during press working. The bottom surface of the lower holder is hermetically sealed. Therefore, the scum is strongly sucked and the scum climbing effect can be enhanced.

When the lower holder is moved, the shutter is lowered against the urging force, and is in contact with the bottom of the lower holder while rotating. Therefore, there is no abrasion due to friction and no scum is caught and damaged.

Further, since the shutter supported by the support is always urged upward, there is no need for an electric device or operation, and it is simple and inexpensive.

[Brief description of the drawings]

1 is an enlarged sectional view taken along the line II according to FIG. 3;

2 is an enlarged sectional view taken along line II-II according to FIG. 3;

FIG. 3 is a perspective view of a disk support assembly according to an embodiment of the present invention;

FIG. 4 is a side view illustrating the entire turret punch press according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 turret punch press (press machine) 7 lower frame 13 punch 19 upper turret 21 die 25 lower turret 31 disk support (support) 33 suction hole 35 disk support assembly 39 shutter 45 spring (elastic body) W work

Claims (1)

(57) [Scope of request for utility model registration] A punch and a die selected from a plurality of punches mounted on an upper holder and a plurality of dies mounted on a lower holder are moved to a processing position, and a work is performed by cooperation of the punch and the die. A press machine for performing press working on the bottom surface of the lower holder and the lower frame at the working position, in order to prevent the pressed scum from rising on the die with the rise of the punch. A support provided with a suction hole communicating with the vacuum is provided between the support and the support, the tip of which is in contact with the bottom surface of the lower holder, is vertically movable and freely rollable, and is constantly urged upward by an elastic body. A press machine provided with a scrap rising prevention device provided with a plurality of roller-shaped shutters.