JP2584162Y2 - Die set automatic change press machine - 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 device used for processing an end portion of a frame material.

[0002]

2. Description of the Related Art In a press operation, the exchange of a mold is a heavy labor due to the heavy weight of the mold, even if the exchange of the mold is simple. With danger. On the other hand, the aging and feminine aging of factories has made it necessary to improve the working environment.

[0003] In response to such a demand, there is a press apparatus 2 provided with a die changer 1 for automatically exchanging dies as shown in FIG. The die changer 1 is provided on a stocker 5 that is pivotally mounted on a frame 3 around a horizontal shaft 4.
A plurality (four in the figure) of die sets 6 (a type of mold set) are mounted horizontally and parallel to the horizontal axis 4.
The necessary die set 6 is moved to the front position by rotating the stocker 5. In the die set 6, an upper punch plate 7 and a lower die plate 8 are usually arranged to face each other, and are connected by a guide rod 9 and a return spring 10. The mold has a movable side fixed to the punch plate 7 and a fixed side fixed to the die plate 8. That is, the exchange of the mold is performed by rotating the stocker 5 and exchanging the position of the die set 6. Code 11
Moves up and down in the press device 2 with a ram, and presses the punch plate 7 to perform press working.

In such a press device with a die changer, the die changer 1 and the press device 2 are separated, and the die set 6 stored in the stocker 5 of the die changer 1 is moved to the press position P of the press device 2 by an air cylinder. The movement is performed using an actuator 12 such as the above. For this reason, in this method, the exchange of the die (die set 6) is performed by rotating the stocker 5 in the die changer 1, moving the die set 6 to the press position P, pressing operation,
Since the process involves moving the die set 6 to the storage position and rotating the stocker 5, it takes time to replace the mold.

A die changer 1 and a press device 2
However, there is a drawback in that the floor space occupied is large because of the separation. In order to omit the movement of the die set 6 by the actuator 12 and to reduce the occupied floor area, the die changer 1 and the press device 2 are integrated, and by rotating the stocker 5, the die set 6 is directly moved to the press position P. Then, as shown in FIG. 7, the die set 6 rotating for mold exchange collides with the ram 11 located at the press position P.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a press apparatus in which a conventional die changer and a press apparatus are integrated, and which is compact and requires a short time for mold replacement.

[0007]

Means for Solving the Problems The application of the pressing force by the ram is made by another mechanism, whereby the conventional die changer and the pressing device are integrated, and a plurality of mold sets equipped on the stocker are directly connected to each other. It can be arranged at the press position and the press work can be performed as it is. For this purpose, the following configuration is adopted.

[0008] A press position is set between both side walls in front of the frame. A stocker in which a plurality of mold sets are horizontally mounted between the left and right side plates is rotatably supported between the two side walls by a horizontal axis, and each mold set is arranged at the press position by the rotation of the stocker. Press device. The pressing force applying device is fixedly arranged on the frame side. The position is set to a position inside the arrangement of the plurality of mold sets mounted on the stocker and not interfering with the rotating mold set.

Each mold set includes a machine frame having an upper pallet and a lower pallet. A punch plate and a die plate are arranged between the upper and lower pallets, and the dies are attached to these. The punch plate is guided by the machine frame so as to be vertically movable. The upper pallet is provided with a pressing direction converting mechanism for converting the pressing force in the front-rear direction into the pressing force in the vertical direction, and the pressing side of the converting mechanism in the vertical direction is connected to the punch plate. The front-rear pressing side of the pressing direction changing mechanism of each mold set positioned at the pressing position faces the pressing force applying device and is arranged to receive the pressing force.

It is preferable that the pressing direction changing mechanism has the following structure. A parallel link structure is constituted by a drive link and a driven link arranged on the upper pallet and a transmission link rotatably connected to the drive link and the driven link. The drive link is disposed on the upper pallet so as to be slidable in the front-rear direction, the rear protrudes from the pallet, and the driven link is disposed on the machine frame so as to be slidable in the vertical direction. When the mold set is placed at the pressing position, the rear end of the drive link faces the output side of the pressing force applying device and receives the pressing force.

[0011]

[Function] The configuration in which the press force applying device is arranged inside the arrangement of a plurality of mold sets mounted on the stocker, and the configuration in which each mold set is provided with a pressing direction changing mechanism in the machine frame, makes the press device compact. Can be configured. The configuration in which each mold set can be arranged at the press position by the rotation of the stocker and the configuration in which each mold set is provided with a pressing direction changing mechanism in the machine frame reduce the time required for mold replacement.

[0012]

1 and 2 schematically show an entire mold set automatic changing press 13. The frame 3 is a sturdy housing structure having left and right walls 14a, 14b, and a press position P is set between both side walls 14 (a, b) on the front. A stocker 5 is rotatably mounted on a center horizontal shaft 4 between left and right walls 14 (a, b) of the frame 3, and is driven and rotated by a stocker drive motor 16 via a gear 15. I have.

The stocker 5 has strong side plates 17a and 17b on both left and right sides of the horizontal shaft 4. Four (plural) mold sets 6 are horizontally rotated between the side plates 17 (a and b), respectively. It is mounted on a shaft. An attitude maintaining gear 19 is fixed to each of the rotating shafts 18.
Are respectively engaged with a central gear 21 integral with the frame 3 via an idle gear 20. These gears 19, 2
Numerals 0 and 21 have a structure similar to a planetary gear train, so that each mold set 6 always maintains a predetermined correct vertical posture even when the stocker 5 is rotated.

Each of the mold sets 6 has the same structure, and as shown in FIG. 3, includes a machine frame 24 having an upper pallet 22 and a lower pallet 23, and a punch plate 25 and a die plate 26 are provided between the upper and lower pallets 22, 23. Are located. The movable mold 27 is provided on the punch plate 25 with the die plate 26.
, A fixed mold 28 is attached. The punch plate 25 is guided by the machine frame 24 to be vertically movable.

A pressing direction changing mechanism 29 is provided on the upper pallet 22. In this embodiment, the pressing direction changing mechanism 29 includes a drive link 30 and a driven link 31 disposed on the upper pallet 22 and a parallel link structure including two parallel transmission links 32 and 33 rotatably connected to the drive link 30 and the driven link 31. The drive link 30 is connected to the upper pallet 22
Are slidably arranged in the front-rear direction, and the rear protrudes from the upper pallet 22. The driven link 31 is slidably disposed in the machine frame 24 in a vertical direction. Code 3
Reference numeral 4 denotes a spring which constantly urges the drive link 30 backward (to the right in the drawing). Drive link 3
0 by the spring 34
Reaches the upper limit position with respect to the machine frame 24, and
Since the forward and backward movement is regulated by each of the mold sets 6, it is fixedly determined in each mold set 6.

Each of the mold sets 6 has a width in the left-right direction such that it is bridged between the side plates 17 (a, b) of the stocker 5. The link 30 and the driven link 31 also have a large left-right width, and have a plate shape as a whole as shown in FIG.

On the other hand, a pressing force applying device 35 is arranged on the frame 3 side. In this embodiment, the press force applying device 35 is constituted by four hydraulic actuators 36, and two press actuators
7. Each actuator 36 is fixed horizontally on a base 39 fixed above a core shaft 38 on the frame 3 side with a joint 37 as a front. The vertical position of the joint 37 is set equal to the vertical position of the drive link 30 in the mold set 6 positioned at the press position P. Further, the drive link 3
At the rear edge of the joint 0 and the front edge of the joint 37, an engaging portion 40 is configured to be detached from each other by moving in the vertical direction, and when engaged, positioning of both members in the left-right and front-back directions is performed. It has become.

As described above, the pressing force applying device 35 is positioned on the side of the frame 3 inside the arrangement of the plurality of mold sets mounted on the stocker 5 and at the non-interference position with the rotating mold set 6. It is fixed and arranged. 4 and 5 show a lock device 41 for maintaining and fixing the mold set 6 at the press position P at a fixed position, and for receiving the press load during the press operation by the frame 3. The lock device 41 is disposed at the press position P on the left and right side walls 14 (a, b), and corresponds to the side of the mold set 6 at the press position P. This device 41 is used for the frame 3
And an air actuator 42 fixed to the frame 3 and two lock pins 43 guided horizontally by the frame 3 and movable in the left-right direction.
4 and a lock pin 43 are connected by an interlocking rod 45. On the other hand, in the left and right walls 14 (a, b), a through hole 46 is formed in accordance with the position of the lock pin 43, and the posture maintaining gear 19 integral with the mold set 6 at the press position P is formed.
Lock holes 47 are formed.

The pressing operation is performed as follows. One mold set 6 in the stocker 5 is at the pressing position P
And is fixed at a fixed position by a lock pin 43 of a lock device 41. At this time, the rear end of the drive link 30 in the pressing force conversion mechanism 29 of the mold set 6 is connected to the joint 37 of the pressing force applying device 35 and the engaging portion 4.
0 (the state of FIGS. 1 and 2). That is, the pressing side in the front-rear direction of the pressing force conversion mechanism 29 faces the pressing force applying device 35 and receives the pressing force. The driven link 3 in the mold set 6
Reference numeral 1 denotes a state in which the drive link 30 is moved upward by being pushed by the spring 34, and the punch plate 25 is also moved upward, and the mold is in an "open" state.

When an operator places the end of the frame material requiring processing between the movable and fixed molds and presses the press switch, the hydraulic actuator 36 of the pressing force applying device 35 is pressed.
Operates to project the joint 37 forward. Then
The drive link 30 is pressed forward, and the parallel links 32, 3
3, the driven link 31 is pressed downward. That is, the pressing force in the front-rear direction by the pressing force applying device 35 is:
The pressing force conversion mechanism 29 converts the pressing force into a downward pressing force. Then, the punch plate 25 is moved downward by the downward pressing force, and the frame material is processed.

The function of the press switch is transient, and the press force applying device 35 is operated for one cycle by one ON operation.
Even if there is an ON operation again in the middle of one cycle, the circuit is configured to ignore this operation. When replacing the mold, that is, the mold set 6, the stocker drive motor 1
6 is driven. At the same time, the lock device 41 is operated in the reverse direction, and the lock pin 43 is pulled out from the lock hole 47 of the attitude maintaining gear 19 in the mold set 6 at the press position P. The stocker 5 is rotated via the gear 15 and the mold set 6 containing the necessary mold is moved to the press position P.
Placed in Next, the lock device 41 is driven in the forward direction, and the lock pin 43 is fitted into the lock hole 47 of the attitude maintaining gear 19 of the mold set 6 and positioned. This completes the mold replacement and at the same time prepares to receive the press load.

When the mold set 6 moves away from the pressing position,
When approaching the pressing position, the rear edge of the drive link 30 in the mold set 6 and the front edge of the joint 37 in the pressing force applying device 35 are automatically detached by the engaging portion 40. Thus, the mold set 6 is
When the drive link 30 is disposed at the press position P, the rear end of the drive link 30 faces the output side of the press force applying device 35 and receives the press force. The intermittent drive mechanism of the stocker 5 for accurately stopping the necessary mold set 6 at the press position P, the start and stop of rotation of the stocker 5 and the locking device 4
The sequence operation with 1 is a conventional configuration, and a specific description is omitted.

The above is an embodiment, and the present invention is not limited to the illustrated specific configuration. The number of the mold sets 6 provided in the stocker 5 is not limited to four. Further, in the embodiment, the large mold set 6 in which a plurality of molds are arranged in one machine frame 24 (dimension in the left-right direction) is shown. Only one mold may be arranged in the machine frame 24, and a plurality of such mold sets 6 may be arranged in the stocker 5. The pressing force conversion mechanism 29
Although a link type is shown, a crank type, for example, a driving piston which receives the pressing force opposite to the output side of the pressing force applying device 35 at both ends of a cylinder chamber bent at a right angle, and which is connected to the punch plate 25. Hydraulic mechanism having a structure provided with a driven piston. Further, the parallel links 32 and 33 shown in the embodiment may be transmission links for transmitting the movement of the drive link 30 to the driven link 31, and are not limited to two. The pressing force applying device 35 may be an air actuator, a cam mechanism using an electric motor, or the like.

[0024]

[Effects of the Invention] A mechanism for changing the mold and a mechanism for operating the press are integrated, and the pressing force applying device is arranged in the center of the stocker in a space that has not been used conventionally. The entire press device can be configured compactly. Therefore, the floor area occupied by the factory is small. Since the mold set in which the molds are stored is disposed directly at the press position by the rotation of the stocker, the time required for mold exchange is short, and mold exchange can be performed quickly.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing a structure (example).

FIG. 2 is a plan view schematically showing a structure.

FIG. 3 is a side view of a mold set shown in a cross section.

FIG. 4 is a front view of the locking device schematically shown.

FIG. 5 is a side view showing a mechanism of the lock device.

FIG. 6 is a side view schematically showing a conventional example.

FIG. 7 is a side view schematically showing a trial example.

[Explanation of symbols]

 Reference Signs List 3 frame 4 horizontal axis 5 stocker 6 die set (die set) 13 die set automatic exchange press machine 14 left and right side walls 17 side plate 22 upper pallet 24 machine frame 29 pressing force conversion mechanism 30 drive link 31 driven link 32, 33 parallel link 35 Press force applying device 37 Joint

Claims (2)

(57) [Scope of request for utility model registration] 1. A press position is set between both side walls in front of a frame, and a stocker in which a plurality of mold sets are horizontally mounted between left and right side plates is rotatably supported between both side walls by a horizontal shaft. A press device capable of disposing each mold set at a press position by rotating a stocker, wherein the rotating mold set is located inside an array of a plurality of equipped mold sets, and A press force applying device is fixedly arranged on the frame side at a non-interference position of each frame.Each mold set includes a machine frame having an upper pallet and a lower pallet, and a punch plate and a die plate are arranged between the upper and lower pallets. Molds are attached to these, the punch plate is guided to the machine frame so as to be able to move up and down,
The upper pallet is provided with a pressing direction conversion mechanism for converting a pressing force in the front-rear direction into a pressing force in the vertical direction, and a structure in which the vertical pressing side of the conversion mechanism is coupled to a punch plate, and is positioned at the pressing position. An automatic die-set changing press device, wherein a front-rear pressing side of a pressing direction changing mechanism of a die set faces a pressing force applying device and receives a pressing force. 2. The pressing direction changing mechanism has a parallel link structure including a drive link and a driven link disposed on an upper pallet and a transmission link rotatably connected to the drive link and the driven link. The driven link is arranged to be slidable up and down on the machine frame, and when the mold set is placed at the press position, the rear end of the drive link is 2. The automatic mold set changing press device according to claim 1, wherein the press force applying device is arranged so as to face the output side and receive a pressing force.