JP2546203Y2 - 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 the 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 this, a disk support provided with a suction hole communicating with a vacuum is provided between the bottom of the lower holder and the lower frame at the processing position, and a tip of the disk support comes into contact with the bottom surface of the lower holder. A plurality of shutters, which are movable and constantly urged upward, are provided, and these shutters are provided by a projecting member provided on the bottom surface of the lower holder. Characterized by comprising been pressed downward during rotation of da, a press machine equipped with a debris up prevention device.

[0011]

By adopting the press machine equipped with the device for preventing debris climbing of the present invention, first, the upper and lower holders are moved to select a desired punch and die, and are moved to the processing position to be positioned. You.

During the above movement, both ends of the shutter provided on the disk support are pressed downward by overcoming the urging force by the projection members provided on the bottom surface of the lower holder, so that the upper end of the shutter is raised from the bottom of the lower holder. They do not separate and hurt 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, when the punch and the die are positioned at the lowered position and stopped, the projection member is interrupted, so that the shutter is pushed upward by the urging force and the tip comes into contact with the lower holder. Therefore, when the hole leading to the vacuum of the disk support is evacuated, the degree of sealing is increased by the shutter, so that the vacuum effect is increased and the dust is strongly sucked, so that the dust is prevented 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 1 as a press machine will be described with reference to FIG. That is, the frame 5 having the foot portion 3
Is provided with a fixed table 9 fixed to a lower frame 7 that supports the work W, and a work positioning device 11 that positions the work W. Further, a plurality of punches 13 are circumferentially mounted, and an upper turret (upper holder) 19 rotatably supported by a rotating shaft 17 on an upper frame 15 and a plurality of dies 21 are mounted on the circumference. Rotating shaft 23 on lower frame 7
Lower turret (lower holder) 2 rotatably supported by
5 are provided. The upper turret 19 and the lower turret 25 are rotated synchronously by one turret driving device (not shown), and a desired set of punches 1 is formed.
3 and the die 21 are selected and positioned at a processing position below the striker 27.

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 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. The workpiece is gripped by the work clamp of the work positioning device 11 and the desired punched portion is formed by the die 21 of the punch 13.
It is 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 31, and the lower frame 7, and The desired punching is performed on 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 the disk support 31 is connected to the vacuum device, the space is full of gaps and the sufficient effect cannot be obtained. Therefore, in this embodiment,
A disk support assembly 35 having the appearance as shown in FIG. 3 was provided. That is, in order to support the impact force below the lower turret 25, two circumferentially provided inner and outer turrets 25 are provided.
In addition to the individual supports 37, two shutters 39 are provided by a guide block 41 substantially in the normal direction, and have a box shape as a whole.

As for the details of the shutter 39, as shown in FIG. 1, the shutter 39 is provided so as to be vertically movable in a guide groove 41a provided in a vertical direction of a guide block 41 supported on the lower frame 7. I have. The shutter 39 is
The plurality of springs 43 constantly urge the upper turret 25 in the upper direction. At the center of the spring 43, a guide rod 45 hanging down from the lower surface of the shutter 39 is provided so as to be vertically movable by a guide hole 41b provided at the bottom of the guide groove 41a. It has become.

On the lower frame 7 sandwiched between the two guide blocks 41, a bottom plate 47 is provided in a shape like the bottom plate of the box-shaped disk support assembly 35.
The bottom plate 47 is provided with the suction hole 33 communicating with a vacuum device (not shown).

On the other hand, in FIG. 2, two sets of projections are formed on the bottom surface of the lower A turning pin (dog) 51 which is a cam-shaped projection as a member is provided in a dotted manner over the entire circumference.

With the above configuration, the punch 13 and the die 21
Is in the processing position, the disc support 37 of the disc support assembly 35 and the shutter 39 are in contact with the bottom surface of the lower turret 25, as shown by the two-dot chain line in FIG. 49 are positioned. Therefore, when the suction hole 33 is connected to the vacuum device, the degree of vacuum in the disk support assembly 35 increases because there is almost no gap that causes air leakage.
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. Since both ends are pressed downward by the rotating metal 51, the leading end of the shutter 39 is separated from the bottom surface of the lower turret 25 to form a sufficient gap.

Therefore, while the lower turret 25 is rotating, there is no danger between the lower surface of the lower turret 25 and the upper surface of the disk support assembly 35 to lock or damage each other. Further, as described above, the vertical movement of the shutter 39 is performed by the rotation of the spring 43, the screw 51 and the lower turret 25, 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. Also, disk support assembly 35
Can be applied to the structure shown in FIG. 5 instead of the structure shown in FIG. In this case, the shape and position of the dog (dog) 51 are slightly different.

[0029]

As will be understood from the above description of the embodiment, the shutter provided on the disk support is always urged upward, and during press working, the shutter surrounds the suction hole communicating with the vacuum. The bottom surface of the lower holder is 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 not in contact with the bottom of the lower holder. Therefore, there is no abrasion due to friction and no scum is caught and damaged.

Further, since the shutter provided on the disk support is always urged upward, there is no need for an electrical device or operation, and the structure is simple and inexpensive.

[Brief description of the drawings]

1 is an enlarged sectional view taken along the line II according to FIG. 2;

FIG. 2 is a partial bottom view of a lower turret in a turret punch press as a press machine according to the present invention.

FIG. 3 is a three-dimensional view of a disk support assembly.

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

FIG. 5 is a perspective view of another embodiment of the disk support replacing FIG. 3;

[Description of Signs] 1 Turret punch press (press machine) 7 Lower frame 13 Punch 19 Upper turret 21 Die 25 Lower turret 33 Blow hole 35 Disk support assembly 39 Shutter 43 Spring (elastic body) 51 Turner (protruding member) 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 disk support provided with a suction hole communicating with a vacuum is provided between the disk holder and a plurality of shutters whose tips are in contact with the bottom surface of the lower holder, are vertically movable and are constantly urged upward, A descent-up mechanism, wherein the shutters are pressed and lowered by the projection members provided on the bottom surface of the lower holder during the movement of the lower holder. Press machine with prevention device.