JPH1015697A - Transfer press device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer press device by which an upper die can be miniaturized, and the upper die can be changed without labor and time. SOLUTION: In the transfer press device, a damper mechanism 50 is composed on an upper die receiving rest 10 side, and the damper mechanism 50 and the upper die 20c are separated. Therefore, for the damper mechanism 50, it is difficult to miniaturize in a relationship with the up and down strokes of the upper die 20c, however, for the upper die 20c, it can be miniaturized. In the lower end face of a plate 51, when sliding the upper die 20 calonga guide rail 60, the upper die 20c is butted against a positioning pin, and the upper die 20c is positioned there.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer press apparatus in which a work is sequentially pressed in each processing area. More specifically, the present invention relates to a structure of an upper die and a peripheral portion thereof in a transfer press device.

[0002]

2. Description of the Related Art In a transfer press apparatus, as shown in FIG. 7, a work pressing pin 23 elastically lowers a work 70 during press working with a work pressing pin 23 projecting from a lower end surface of an upper die 20A. A damper mechanism 50A that can be pressed toward the mold 30A is configured. This damper mechanism 50A is conventionally
A. That is, the damper mechanism 50
5A, a pipe 59 is vertically arranged inside an upper die 20A. Inside the pipe 59, a coil spring 592 is attached to an end plate 5 fixed to an upper end opening of the pipe 59.
It is arranged between 91 and the work pressing pin 23.
Therefore, when the upper mold 20A is lowered together with the upper mold receiving base 10, first, the work pressing pin 23 elastically comes into contact with the work 70 while being urged by the damper mechanism 50A. Even when the knockout 24 is retracted into the inside of the upper mold 20A when the work 70 is pressed, the work pressing pin 23 remains in elastic contact with the work 70. Also, when the upper die 20A rises after the press working is completed, the work pressing pin 23 is in a state of elastically pressing the work 70 toward the lower die 30A halfway.

[0003] In such a transfer press apparatus, when replacing the upper mold 20A, first, the upper mold 20A is replaced.
The shank 201A protruding from the upper end of the
And temporarily tighten it.
From this state, the upper mold receiving table 10 is lowered to perform vertical centering. This centering is performed with reference to the guide post 29 projecting downward from the upper die 20A and the guide post receiving hole (not shown) of the lower die. After this centering operation, the angular position of the upper mold 20A is adjusted and the upper mold 20A is fully tightened.

[0004]

The conventional transfer press apparatus configured as described above has the following problems. First, the damper mechanism 50A is connected to the upper mold 20.
Since the upper mold 20A is integrated with the upper mold A, there is a problem that the upper mold 20A cannot be downsized. That is, it is difficult to reduce the size of the damper mechanism 50A because the size corresponding to the stroke at the time of pressing is required.
It is also difficult to reduce the size of A. Secondly, after temporarily tightening the upper mold 20A with the shank retainer 11, it is necessary to perform various adjustment operations such as adjusting the angular position of the upper mold 20A, so that it takes time to replace the upper mold 20A. There is a problem.

An object of the present invention is to solve the above problems and to provide a transfer press device capable of reducing the size of an upper die.

Another object of the present invention is to provide a transfer press device capable of exchanging an upper mold without trouble.

[0007]

In order to solve the above problems, according to the present invention, a lower die on which a work is placed, an upper die for press-working the work on the lower die, and an upper die are provided. An upper die receiving table that moves up and down while being held by the upper die mounting portion, a work pressing pin projecting from the lower end surface of the upper die toward the lower die, and the work pressing pin elastically holds the work when performing press working. In a transfer press apparatus having a damper mechanism capable of being pressed toward the lower mold, the damper mechanism is configured on the upper mold receiving side.

In the present invention, the upper die and the damper mechanism are not integrated, but the damper mechanism is provided on the upper die receiving side, and the upper die and the damper mechanism are separated. Therefore, even if it is difficult to reduce the size of the damper mechanism,
The upper mold can be downsized.

[0009] Even in this case, the mechanical connection between the damper mechanism and the work pressing pin is automatically performed in conjunction with the operation of mounting the upper die on the upper die mounting portion. Preferably, it is configured.

In the present invention, when the joining surface between the upper die mounting portion and the upper die is formed as a flat surface, the upper die is mounted on the upper die mounting portion by sliding the joining surfaces. Can be.

In the present invention, the upper die mounting portion includes a guide rail on which the upper die is slidable in a lateral direction, and the upper die is mounted in a lateral direction orthogonal to the sliding direction by using the guide rail. Preferably, it is configured to define a position.

With this configuration, the upper die can be automatically positioned in the horizontal direction perpendicular to the sliding direction only by sliding the upper die along the guide rails. Can be replaced.

In the present invention, the upper die mounting portion includes a positioning portion that interferes with the upper die sliding along the guide rail to define a mounting position of the upper die in the sliding direction. Is preferred.

With this configuration, the upper die can be automatically positioned in the sliding direction only by sliding the upper die along the guide rail, so that the upper die can be replaced without any trouble.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

[Overall Structure] FIG. 1 is a front view showing a transfer press apparatus according to the present invention, and FIG. 2 (a) shows an upper mold mounting portion formed at a lower end of an upper mold receiving base in the transfer press apparatus. FIG. 2B is a bottom view of the upper die receiving side showing a state where a plurality of upper dies are held in the upper die mounting portion.

In FIG. 1, the transfer press apparatus 1 has eleven processing areas in total in which the first step to the eleventh step are performed along the work transfer direction shown by the arrow A, and the work 70 is sequentially processed. This device is formed into a press-finished product such as a motor case while being automatically transported to the area.

In the transfer press apparatus 1, the lower mold 30a on which the work 70 is placed is placed in any of the processing areas.
-K, upper dies 20a-k for processing the work 70 on the lower dies 30a-k, and upper dies that simultaneously move the upper dies 20a-k up and down while holding all the upper dies 20a-k. A cradle 10 is configured. Any upper mold 20a ~
k, the lower die 3
A work pressing pin 23 that elastically presses the work 70 on 0a to k protrudes.

In the transfer press apparatus 1 configured as described above, the work 70 is pressed between the upper dies 20a to 20k and the lower dies 30a to 30k in one cycle in which the upper die receiving table 10 moves up and down. The pressed workpiece 70 is transported to the next processing area.

As will be described later in detail, in this embodiment, FIG.
As shown in (a) and (b), in any of the processing areas, the upper dies 20a to 20k move the workpieces on the lower surfaces of the plates 51 constituting the lower end surface of the upper die receiving base 10 in the work transfer direction. A pair of hydraulic clampers 63a, 63b are mounted by sliding from a direction orthogonal to A.
Is held by

[Attaching Structure of Lower Die] FIG. 3A is a plan view of the lower die receiving side showing a state in which a plurality of lower dies are held by the lower die receiving base in the transfer press apparatus.
FIG. 3B is a front view showing a configuration of a lower mold mounting portion in which a plurality of lower dies are mounted on the lower die receiving stand.

3 (a) and 3 (b), the lower dies 30a to 30k are connected to the lower pedestal 4 in any of the processing areas arranged along the work transfer direction A as described below.
0, is mounted from a direction orthogonal to the workpiece transfer direction A,
The pair is held by a pair of hydraulic clampers 431a and 431b.

First, a lower bolster 40 is provided with a flat bolster 41 fixed to the machine base and two bolsters 41 fixed to the surface thereof.
The sub bolsters 43 and 45 are configured. On the surface of the bolster 41, four positioning pins 411 are formed along the workpiece transfer direction A of the workpiece 70, and the sub bolsters 43 and 45 are positioned by the positioning pins 411.

On the surfaces of the sub bolsters 43 and 45, a pair of front and rear hydraulic clampers 431a and 431b are combined.
The hydraulic clampers 431a and 431b
Head protrudes from the surfaces of the sub-bolsters 43 and 45. Of the pair of hydraulic clampers 431a and 431b, the upper hydraulic clamper 431a is a fixed type and the lower hydraulic clamper 431b is a movable type. Therefore, if the hydraulic clamper 431b is retracted therefrom, for example, the lower mold 30b is moved under the head of the hydraulic clamper 431a until the shaft of the hydraulic clamper 431a is fitted into a groove formed at the tip of the lower mold 30b. Can be plugged in. After the lower mold 30b is mounted in this manner, the hydraulic clamper 431b is caused to appear in the groove of the lower mold 30b, and then the lower mold 30b is held by the hydraulic clampers 431a and 431b. It can be fixed on the cradle 40. Here, the hydraulic clamper 431
Positioning pins 432 are formed on both sides of “a”. Therefore, when the lower mold 30b is mounted, the tip of the lower mold 30b abuts against the positioning pin 432, so that the lower mold 30b is mounted.
b is automatically positioned.

Since the lower die mounting structure has the same structure in any of the processing areas, the description of the other areas will be omitted.

[Configuration of Upper Die Mounting Portion of Plate] In the transfer press apparatus 1, since all the processing areas have basically the same configuration, the upper die 20c corresponding to the third processing area and its periphery. The structure of the part will be described with reference to FIGS.

FIG. 4 is a cross-sectional view of the upper die and its peripheral portion when one processing area of the transfer press device is cut along the work transfer direction, and FIG. 5 is for exchanging the upper die in this processing area. FIG. 6 is a cross-sectional view of the upper die and its peripheral portion when one processing area of the transfer press device is cut along a direction orthogonal to the workpiece transfer direction to show the operation of FIG.

Referring to FIGS. 4 and 5, the upper mold receiving base 10
The lower end surface of the plate 51 that constitutes the lower end surface of the upper die 20c is a mounting portion (upper die mounting portion) of the upper die 20c. That is, the lower end surface (joining surface) of the plate 51 is flat, and has an L-shaped guide rail 60 projecting downward so as to face each other along the work transfer direction A, and a direction perpendicular to the transfer direction A. A fixed hydraulic clamper 63a whose head protrudes downward in the mounting direction of the upper die and a positioning pin 65 (positioning portion) that protrudes downward at a position slightly deviated from the hydraulic clamper 63a are configured. At a position facing the hydraulic clamper 63a, another hydraulic clamper 63b (movable hydraulic clamper) is configured to be paired with the hydraulic clamper 63b, as shown in FIG. Since the mold 20c is retracted when it is mounted, it is not shown in FIG.

[Structure of Upper Die] The upper die 20c is composed of a sub plate 21, a punch holder 26, a back plate 27, and a die portion 28 for pressing a work 70 into a predetermined shape at a lower end portion. Sub plate 21
Has a flat upper end surface (joining surface) and a projecting portion 211 for hooking on the guide rail 60.

With respect to such an upper mold 20c, if the hydraulic clamper 63b (not shown in FIG. 5) is retracted, the upper mold 20c is slid along the guide rails 60, and the tip of the upper mold 20c is moved. The upper die 20c can be inserted under the head of the hydraulic clamper 63a until the shaft of the hydraulic clamper 63a fits in the groove configured as described above. At this time, the tip of the upper die 20c is
The upper die 20 in the sliding direction.
The mounting position of c can be defined by the positioning pin 65. The mounting position of the upper die 20c in the direction orthogonal to the sliding direction is defined by the guide rail 60.
After the upper mold 20c is mounted in this way, if the retracted hydraulic clamper 63b is made to appear in a groove formed at the rear end of the upper mold 20c, the hydraulic clampers 63a, 63
b, the upper mold 20c is moved to the plate 51 of the upper mold receiving stand 11.
Can be fixed. A guide post 29 for centering the upper die 20c and the lower die 30c protrudes from the lower end surface of the punch holder 26. Therefore,
As long as the center is centered by the guide post 29 after the upper die 20c is mounted, the upper die 20c is already positioned by the guide rail 60 and the positioning pin 65, so that it is not necessary to adjust the angle. Therefore, the upper mold 20c can be replaced without trouble.

Since such an upper mold mounting structure has the same structure in any of the processing areas, the description of the other areas will be omitted.

[Structure of Work Pressing Pin] The upper mold 20c is
Each of the sub-plate 21, the punch holder 26, the back plate 27, and the mold part 28 is formed in a cylindrical shape, and a spring lid 251 is fitted into the upper end of the hollow part. A knockout 24 is fitted to the lower end of the upper mold 20c, and the knockout 24 can move up and down inside the upper mold 20c. A pipe 22 is fitted between the sub-plate 21 and the knockout 24 in a hole formed therein. The lower end of the pipe 22 is connected to the knockout 24, but the upper end is merely passed through the hole of the sub-plate 21. Knockout 2
4, a hole communicating with the pipe 22 is formed, through which a work pressing pin 23 is passed, and the work pressing pin 23 can slide up and down. A connection rod 231 is connected to the upper end of the work pressing pin 23, and is linked with the vertical movement of the work pressing pin 23. Therefore, the work pressing pin 2
When the rod 3 comes into contact with the workpiece 70 and is pushed up, the connecting rod 231 projects from the upper end surface of the sub-plate 21 while being guided inside the pipe 22 in conjunction with it. Further, a coil spring 25 is disposed between the knockout 24 and the spring lid 251 around the pipe 22. Therefore, knockout 24
Although the outer peripheral portion does not protrude downward from the mold portion 28 by engaging the inner peripheral portion of the back plate 27,
It is in a state of being urged downward by the coil spring 25.

[Structure of Damper Mechanism] When the upper die 20c thus configured is mounted on the lower surface of the plate 51 constituting the lower end of the upper die receiving base 10, the upper end surface is closed. Here, a substantially cylindrical holder 53 is fitted to the plate 51 via a flange portion at a position facing the shank retainer 11 of the upper die receiving stand 10, and inside the holder 53, the upper die 20c is provided. From the connecting rod 23
A damper mechanism 50 is configured to urge the work pressing pin 23 downward via the connecting rod 231 when the upper end of the projection 1 projects.

In the damper mechanism 50, a rod 55 is disposed inside the holder 53. At the lower end of the rod 55, a disk-shaped receiving plate 57 is attached.
Thereby, the coil spring 551 mounted around the rod 55 is supported. Here, the rod 55
When the upper end of the connecting rod 231 protrudes from the upper mold 20c, it is pushed up via the receiving plate 57. At this time, the connecting rod 231 is
When the upper end portion of the holder 53 protrudes greatly together with the rod 55 and the receiving plate 57, the coil spring 551 moves the end plate 53 fixed to the upper end portion of the holder 53.
1 and urges the receiving plate 57 downward. When the upper die 20c is mounted at a predetermined position of the upper die receiving base 10 so as to be mechanically connectable in this manner, the upper die 20c
And the position of the receiving plate 57 in the upper die receiving table 10 are automatically overlapped.

The upper end of the rod 55 passes through a hole formed in an end plate 531 fixed to the upper end of the holder 53. Above the holder 53, a cylindrical pipe 59 is attached in an upright state.
Is connected to the upper end surface of the end plate 531. The pipe 59 has an upper end opening closed by an end plate 591, and a coil spring 592 is disposed inside the pipe 59. The upper end of the coil spring 592 is fixed to the end plate 591,
The lower end is connected to the tip of a rod 55 projecting from the end plate 531. Therefore, the coil spring 592
Can always urge the rod 55 downward.
That is, when the upper end of the connecting rod 231 protrudes from the upper mold 20c, first, the coil spring 592
Urges the work pressing pin 23 downward through the rod 55, the receiving plate 57, and the connecting rod 231. When the upper end of the connecting rod 231 protrudes greatly, both the coil spring 592 and the coil spring 551 are used. Urges the work pressing pin 23 downward through the rod 55, the receiving plate 57, and the connecting rod 231.

[Operation] After the work 70 is placed on the lower die 30c in the processing area configured as described above, the upper die 20c is lowered together with the upper die receiving table 10.
The work pressing pin 23 comes into contact with the work 70, and at this time, the work pressing pin 23 is connected to the connecting rod 231 and the receiving plate 5.
7. It is urged by the coil spring 592 via the rod 55, and comes into contact with the work 70 with elasticity. Next, when the work 70 is pressed between the upper die 20c and the lower die 30c, the knockout 24 is retracted into the upper die 20c against the coil spring 25. Further, the work pressing pin 23 is pushed upward, and the connecting rod 23
When the upper end portion 1 protrudes greatly, the coil spring 551 also urges the work pressing pin 23. Pressing is performed in this state, and after that, the upper mold 20c
Rises. Also at this time, the work pressing pin 23 is urged by the coil springs 551 and 592 halfway, so that the work 70 can be held on the upper end surface of the lower mold 30c. .

Since such an operation is the same in any processing area, the description of the operation in other areas will be omitted.

[Effects of the Embodiment] In the transfer press apparatus 1 configured as described above, the damper mechanism 50
Is configured on the side of the upper mold receiving base 10 and is separate from the upper molds 20a to 20k. Therefore, even if there is a restriction that the damper mechanism 50 cannot be made smaller than the vertical strokes of the upper dies 20a to 20k, the upper dies 20a to 20k can be made smaller. Since the mechanical connection between the damper mechanism 50 and the work pressing pin 23 is automatically performed in conjunction with the operation of mounting the upper mold 20c on the plate 51 of the upper mold receiving base 10, the mechanical connection between the damper mechanism 50 and the work pressing pin 23 is performed. There is no problem even if the molds 20a to 20k are configured separately. In this case, the plate 51 and the upper mold 2
0a-k are flat surfaces, so the plate 51
When the upper mold 20c is mounted while sliding, the mechanical structure of the damper mechanism 50 and the work pressing pin 23 is easily automatically connected.

Further, on the upper mold receiving base 10 side, the upper mold 20a is
To k can be positioned, so that the upper dies 20a to 20k can be replaced without much trouble.

[Other Embodiments] In the above-described embodiment, in order to use the work pressing pin 23 for preventing the work from being displaced and for ejecting the work, the damper mechanism 50 applies the urging force to the work pressing pin 23 in two steps. However, according to the present invention, as shown in FIG. 6, one coil spring 529 is provided for the work pressing pin 23.
Only when only the damper mechanism 50 is configured. Also in this case, the work pressing pin 23 is configured on the side of the upper mold 201, and the damper mechanism 50 is configured on the side of the upper mold receiving base 10. Therefore, the damper mechanism 50
Even if there is a restriction that the upper mold cannot be made smaller than the vertical stroke of the upper mold, the upper molds 20a to 20k can be made smaller.

[0041]

As described above, in the transfer press apparatus of the present invention, the damper mechanism is provided on the side of the upper mold receiving base, and the upper mold and the damper mechanism are separated.
Therefore, according to the present invention, even when it is difficult to reduce the size of the damper mechanism, it is possible to reduce the size of the upper die.

[Brief description of the drawings]

FIG. 1 is a front view showing a transfer press device according to an embodiment of the present invention.

FIG. 2A is a front view showing an upper die mounting portion formed at a lower end portion of an upper die receiving base in a transfer press apparatus, and FIG. 2B is a front view of the upper die mounting portion on the upper die receiving side. It is a bottom view.

FIG. 3A is a plan view of a lower mold receiving side on which a plurality of lower dies are mounted in a transfer press apparatus, and FIG.
FIG. 4 is a front view showing a configuration of a lower mold mounting portion in which a plurality of lower dies are mounted on the lower mold receiving stand.

FIG. 4 is a cross-sectional view of an upper die and a peripheral portion thereof when one processing area of the transfer press device according to the embodiment of the present invention is cut along a work transfer direction.

5 shows an upper die when one processing area of a transfer press apparatus is cut along a direction orthogonal to a workpiece transfer direction, in order to show an operation for replacing the upper die in the processing area of FIG. It is sectional drawing of a peripheral part.

FIG. 6 is a cross-sectional view of an upper die and a peripheral portion thereof when one processing area of a transfer press device according to another embodiment of the present invention is cut along a work transfer direction.

FIG. 7 is a sectional view showing an upper mold integrated with a damper mechanism used in a conventional transfer press apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transfer press apparatus 10 Upper die support 20a-l Upper die 21 Sub-plate 23 Work pressing pin (ejector pin) 231 Connecting rod 30a-l Lower die 40 Lower die receiver 50 Damper mechanism 51 Plate 55 Rod 551,592 Coil spring 57 Receiving plate 59 Pipe 60 Guide rail 65 Positioning pin 70 Work

Claims (5)

[Claims] 1. A lower die on which a work is placed, an upper die for pressing the work on the lower die, and an upper die receiving table which moves up and down while holding the upper die at an upper die mounting portion. A work pressing pin protruding from the lower end surface of the upper mold toward the lower mold, and a damper mechanism that allows the work pressing pin to elastically press the work toward the lower mold during press working. In the transfer press apparatus, the damper mechanism is provided on the side of the upper mold receiving stand. 2. The structure according to claim 1, wherein the mechanical connection between the damper mechanism and the work pressing pin is automatically performed in conjunction with an operation of mounting the upper die on the upper die mounting portion. A transfer press device characterized by being performed. 3. The upper mold mounting portion according to claim 1, wherein the joining surface between the upper mold mounting portion and the upper mold is formed as a flat surface, and the joining surfaces are slid together. A transfer press device configured to mount the upper die. 4. The method according to claim 1, wherein
The upper die mounting portion includes a guide rail that allows the upper die to slide in a lateral direction, and is configured to use the guide rail to define a mounting position of the upper die in a lateral direction orthogonal to the sliding direction. A transfer press device characterized by being performed. 5. The method according to claim 4, wherein the upper mold mounting portion includes:
A transfer press device, comprising: a positioning portion that interferes with the upper die sliding along the guide rail and defines a mounting position of the upper die in the sliding direction.