JPH05329564A - Die moving type press working machine - Google Patents

Abstract

PURPOSE:To raise the operation rate of one set of press working machine, and to curtail the amount of investment in equipment by operating a bolster to which plural pieces of press dies are fixed by a driving device, and positioning the die right under a ram at a high speed. CONSTITUTION:When a blank is placed in the inside of a die 40, press working is executed in a state that a carriage 21 is saved and moved temporarily to the outside of the die 40. As soon as press working of this first process is finished, the carriage 21 goes into the inside of the die 40 again and grips a work subjected to press working, and is saved and moved to a position in which an interference of a rotation of the die is not executed, in such a state. In this stage, a bolster 12 is rotated by 60 degrees and the die in a second process is positioned right under a ram 9. The carriage 21 repeats the same operation to the dies in a second process and thereafter. Accordingly, automization of press working in plural processes can be executed by imparting a die changing function of a high speed to one set of small-sized press working machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die moving type press working machine, and more particularly, a plurality of die set type press working machines are sequentially exchanged and used to perform a multi-step process by one press working machine. The present invention relates to a press working machine suitable for carrying out the press working.

[0002]

2. Description of the Related Art Conventionally, a press working machine with a die changing device has been used in various fields. However, since the conventional press processing machine with a die changing device is used for shortening the setup time associated with die changing, the type that takes less than 1 second to change the die is No matter what. Therefore, in order to perform a multi-step press working on one work with a press working machine equipped with a die exchanging device, it is necessary to replace the die by the number of steps. In this case, there is a problem that the mold changing speed is too slow.

On the other hand, the transfer press processing machine is suitable for mass production because it can perform high-speed processing, but is not suitable for high-mix low-volume production because it is expensive equipment. In addition, since the processing speed in transfer press processing is faster than the processing speed of the equipment in the subsequent process, a stock processing method is adopted in which lot processing (processing) is performed on the processing work and stocked. ,
It is necessary to provide a stock portion, which is a bottleneck for space saving automation in, for example, FMS lines.

Therefore, in order to cope with multi-step press working, if the line design is made such that a plurality of ordinary transfer press working machines as described above are used side by side, the capital investment becomes too large, and the investment effect is increased. It is difficult to obtain.

In view of such a point, the work, which has been subjected to the press working of a plurality of steps required in the next step, can be subjected to the press working of the plurality of steps just before the next step, It would be advantageous to have a press machine that can automate press processing in multiple steps without providing a stock part for parts. In this case, it is necessary that the capital investment is as small as possible and that the press working of a plurality of processes can be executed at a working speed and a die replacement time that can be adapted to the line speed of the next process.

[0006]

SUMMARY OF THE INVENTION Therefore, the problem to be solved by the present invention is to reduce the cost of a press machine capable of performing press working in a plurality of steps. A press that can increase the operating rate of one press machine and reduce the capital investment by sequentially performing multiple steps of press processing with this press machine while exchanging dies at high speed. To develop a processing machine.

[0007]

The structure of the present invention made for the purpose of solving the above problems is to operate a bolster to which a plurality of die-set type press dies are fixed by a driving device, The present invention is characterized in that any one of the molds is positioned immediately below the ram at high speed. Further, in order to perform high-speed replacement of the molds, in the present invention, a plurality of molds are arranged on the circumference of the rotating bolster. Place the mold to facilitate positioning. Since the center position of the rotational movement is not displaced, it is easy to realize a structure for positioning a plurality of molds at the earliest.

That is, the press working machine of the present invention is not a type in which the work moves and the mold is fixed unlike the transfer press working machine of the conventional apparatus, but a plurality of metal molds provided on the bolster. The die is index-positioned by the rotary motion of the bolster, and the work is made to stand by at the same position as the press working of the previous step, and when the die of the next step is positioned, the waiting work is performed. The press is positioned in the mold and the following press work is performed.Hereinafter, the molds are sequentially changed, and one work press is used to perform a multi-step press process. is there.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the device of the present invention will be described in detail below with reference to the accompanying drawings. In the accompanying drawings, FIG. 1 is a side view showing the whole of a die moving press machine of the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a plan view of a die on a bolster of the press machine of the present invention. It is a figure.

In FIG. 1, F is a frame having a substantially C-shaped side surface, 1 is a main motor provided above the frame 1, and 3 is a frame.
Is a flywheel connected to the motor 1 via a belt 2 and is attached to a crankshaft 5 provided with a clutch brake device 4. Reference numeral 6 denotes a connecting rod mounted on the crankshaft 5, and a ram 9 is provided on the rod 6 via a connecting pin 7.
Reference numeral 8 is a shut height adjusting device provided above the ram 9.

In FIG. 1, the rotational energy generated by the main motor 1 is stored in the flywheel 3 through the belt 2. When press working is performed, the clutch brake device 4 transmits the rotational energy to the shut height adjusting device 8 and the ram 9 through the crankshaft 5, the connecting rod 6 and the connecting pin 7, and to the ram 9. A processing force is generated in one of the die set type press dies 40 to 45 located directly below.

On the other hand, in FIG. 1, the lower table of the frame F is
A bolster 12 is mounted on the upper surface of the bull Ft and is rotatably connected to a bolster rotation driving device 11 formed mainly of a motor or the like. On the upper surface of the bolster 12, for example, In the embodiment shown in FIG. 3, six die set type dies 40 to 45 are detachably attached by evenly allocating. Here, the bolster 12 is rotatable and positionable in either left or right direction at an integral multiple of the rotation angle of 60 degrees. Reference numeral 13 is a knock pin device that fits into a pin hole (not shown) provided on the peripheral wall of the bolster 12 during rotational positioning.

As shown in FIG. 3, the six dies 40-45 of the die set type have six sets of T-slots 14 in which two sets are radially recessed on the upper surface of the bolster 12. The bolster 12 is detachably mounted on the bolster 12 by legs (not shown) each having a T-shaped cross section. In addition, 15 is a bolster
With the positioning pins provided at the mounting positions of the molds 40 to 45 in 12, the set molds 40 to 45 are bolts (not shown).
It is tightened and attached to the bolster 12. Here, each die 40-45 of the die set type refers to one in which the upper die holder is integrated and die exchange is performed in units of this die set. Further, 90 in the figure is a cover.

In one example of the above-mentioned press working machine of the present invention,
Since six dies 40 to 45 are installed, this embodiment can perform press working in a maximum of 6 steps.
The mold 40 in the process is preliminarily positioned immediately below the ram 9 by the indexing operation of the rotary bolster 12. The 5 molds in the following process are the mold 41 in the second process and the mold 4 in the third process.
The mold 43 is used in the second and fourth steps, the mold 44 is used in the fifth step, and the mold 45 is used in the final step. Like the mold 40, the mold is fixed at a predetermined position on the bolster 12.

The bolster 12 is rotated and positioned by the rotary drive device 11 and fixed by the knock pin device 13, so that the respective molds 40 to 45 are sequentially positioned immediately below the ram 9 in each step.

With respect to each of the molds 40 to 45 which operate as described above, the work is moved to a predetermined position in the form of a blank by the blank carry-in device 25 shown in FIG. This work (blank) is moved along a rail 20 onto a clamp 22 by a carriage 21 which is guided in parallel movement in the left-right direction with respect to the press machine. Holding the blank through an attachment 23 formed in a form suitable for the shape of the ram 9
It is placed at a predetermined position inside the mold 40 of the first step positioned immediately below.

When the blank is placed inside the mold 40, the carriage 21 is pressed to the outside of the mold 40 while it is retracted. Simultaneously with the completion of the press working in the first step, the carriage 21 again enters the inside of the mold 40 to grab the pressed work (blank), and in this state, the carriage is moved to a position where the rotation of the mold is not interfered. do.

At this stage, the bolster 12 rotates by 60 degrees and the mold 41 in the second step is positioned immediately below the ram 9. The carriage 21 repeats the same operation for the molds 42 to 45 in and after the second step. When the press working by the die 45 in the final step is completed, the carriage 21 moves in parallel along the rail 20 while holding the worked work, and discharges the work to the work carry-out device 26. To do.

[0019]

As described above, according to the present invention, the automation of the press working of a plurality of steps, which can be achieved only by the conventional transfer press working machine, can be performed at high speed in a small one press working machine. It becomes possible to provide a press working machine which can be provided by providing a mold exchanging function and which can supply the work which has been subjected to the press working of a plurality of steps necessary for the subsequent steps at a low cost.

Further, in the conventional transfer press machine, for example, when there are right-handed and left-handed parts, it takes time to set up the mold and the like, but even in such a case, the press working machine according to the present invention. According to, for example, the mold 44 of FIG.
The right hand and the left hand are different by selecting either die 44 or 45 on the program by making the mold for the right hand final process and the die 45 for the left hand final process. Even pressed products can be continuously produced as they are by the same press machine.

Therefore, according to the pressing machine of the present invention, several kinds of pressed parts required in the subsequent steps are
Since it can be processed and supplied each time it is required, it is much more flexible than the conventional transfer press machine.

Further, in the press working machine of the present invention, the upper part of the front side of the bolster is an open space, that is, the mold located at this part is located above the mold and is an obstacle forming a part of the structure of the press machine. Since there are no objects, it can be exchanged with other stock molds. This means that the dies can be exchanged during pressing, and this exchange is safe from a safety point of view. From the above, the press working machine of the present invention is extremely useful as a press working machine for forming an FMS line or the like for metal working.

[Brief description of drawings]

FIG. 1 is a side view of an example of a press working machine of the present invention.

FIG. 2 is a front view of the press machine shown in FIG.

FIG. 3 is a plan view for explaining a mold layout example on a rotating bolster.

[Explanation of symbols]

 1 Main Motor 2 Belt 3 Flywheel 4 Clutch / Brake Device 5 Clutch Shaft 6 Connecting Rod 7 Connecting Pin 8 Shut Height Adjustment Device 9 Ram 11 Bolster-Rotating Drive Device 12 Rotating Bolster-13 Knock Pin Device 14 T-slot 15 Positioning pin 20 Carriage rail 21 Carriage 22 Clamp 23 Attachment 25 Blank loading device 26 Work unloading device 40 to 45 Die set type press die 90 Cover

Claims (2)

[Claims] 1. A bolster, to which a plurality of die-set type press dies are fixed, is operated by a drive device so that any one of the dies is positioned at a high speed immediately below a ram. Mold moving press machine. 2. The mold moving die press working according to claim 1, wherein the bolster has a structure rotated by a drive device thereof, and a plurality of die set type press dies are arranged on the circumference of the bolster. Machine.