JP2622166B2 - Mold exchange type press machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press device, and more particularly to a press device that can be operated while exchanging a plurality of dies.

[Related Art] For example, a case where a back plate of a disc brake melting brake pad is manufactured by press working will be described.

The back plate for a floating type disc brake has a basic shape in which two holes are formed in an elongated flat plate having one long side formed in an arc shape, as shown in FIGS. 9 (A), (B) and FIG. (A) As shown in (B),
The shapes of the cylinder-side back plate 4 and the counter-cylinder back plate 5 are different. That is, the anti-cylinder side back plate 5 applies a pressing force to the disk by receiving a reaction of the braking force pressed from the cylinder side.
It is necessary to chamfer the corner of the arc-shaped edge where the reaction is concentrated. Also, the cylinder side back plate 4
Is provided with a dowel 4A as an indicator for notifying the wear state of the brake pad. Therefore, the cylinder side back plate 4 and the non-cylinder side back plate 5 must be manufactured using different molds. Also, the same cylinder side back plate 4 may have the dowels 4A projecting at different positions for the left brake and the right brake, and in this case, different dies must be used.

Under the current situation, in the conventional press device, when manufacturing the back plate 5 on the side opposite to the cylinder, as shown in FIGS. 11A and 11B, chamfering, punching (piercing), and punching (blank) are performed. One mold 90 that can perform three steps simultaneously
When the cylinder side back plate 4 is manufactured, the mold is replaced with a mold that performs only punching and punching at the same time.

[Problems to be solved by the invention]

Such a conventional device has the following problems.

To perform chamfering, punching, and punching with one mold,
The mold was large and the cost was high.

In addition, because of the large size of the mold, it takes time to replace the mold, resulting in poor setup for manufacturing preparation.

Further, due to the poor setup, the product was not manufactured unnecessarily, and the product was in stock, rather than being suitable for small-lot production.

In addition, when the size of the mold is increased, the eccentricity of the press load becomes large, and there is a problem that the mold must be made in consideration of the eccentricity.

Furthermore, as a pressing load, about 100 tons for chamfering,
Approximately 20 tons are required for drilling and approximately 120 tons for punching.Therefore, the press requires a press with a capacity of 240 tons, and actually has a load capacity of about 300 tons with a margin. However, there is a problem that the cost is increased and a space is required for installation in a factory.

After the mold has been used to some extent, the surface of the mold must be polished and dressed, but chamfering, drilling,
In the case where the punching is provided in one mold, sharpening is required for the punched portion at the earliest time. On the other hand, since the polishing for the sharpening needs to be performed over the entire mold, the sharpening is necessary for sharpening the punched portion. There is also a problem that the chamfered / perforated portion without the surface must be polished.

An object of the present invention is to solve such a problem.

[Means for solving the problem]

The present invention employs the following means in order to solve the above problems.

The present invention divides a plurality of dies for performing a plurality of pressing steps into a plurality of dies, and arranges and arranges a plurality of press machines (1a, 1b) for performing a press working by each of the dies (4a, 4b, 5a, 5b). Each of the press machines (1a, 1b) has a slider 2 that can move up and down and a slide table 25 that can move reciprocally toward a position below the slider 2. This is an apparatus on which dies (4a, 4b, 5a, 5b) are placed.

[Action]

For example, the above-described mold for the cylinder-side back plate is divided into two parts, one for punching and doweling 4a, and the other for punching 4b. Are formed separately in two, one for chamfering and drilling 5a and the other for punching 5b.

Two or more press machines are required, and the pre-process dies (4a, 5a) are placed on the slide table 25 of the pre-process press machine 1a. Also, the post-process die (4b, 5b) is placed on the slide table 25 of the post-process die press 1b.
Is placed.

First, in each press machine (1a, 1b), the slide table 25 is used to mold the cylinder-side back plate (4a, 4b).
Was set under the slider 2, the press plate material was supplied to the mold 4a set in the pre-press machine 1a, punching and doweling were performed, and then the press plate material was set in the post-process press machine 1b. Punching is performed by the mold 4b, and the pressed plate is discharged. During the manufacture of the cylinder side back plate 4, the molds (5a, 5b) for the counter cylinder side back plate are set on each slide table 25 of the press machine for the preceding process and the press machine for the post process. The next work can be set up.

When the manufacture of the cylinder side back plate 4 is completed, each slide table 25 is moved and replaced with a mold (5a, 5b) for the counter cylinder side back plate, and the counter cylinder side back plate 5 is manufactured.

As described above, in the present invention, a necessary die can be appropriately selected and press-worked, and another press-working die can be set during the press work.

The mold used in the present invention is not limited to the above-described mold for the back plate, and various press molds can be used. Further, the mold may be divided for each process, but it is not always necessary to do so.
The mold may be divided into one mold for performing two steps and a mold for performing the remaining steps.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, an outline of the apparatus of the embodiment will be described. A sheet material supply device 7 for supplying a plate material for press (hereinafter, sheet material) 6,
A press machine 1a for the preceding process, a conveyor 13, a press machine 1b for the post process, and a discharge device 10 for discharging the sheet material 6 after the completion of the press by the press machine 1b for the post process are sequentially arranged.

Each of the press machines (1a, 1b) has a slider 2 that can move up and down, and has a slide table 25 that can reciprocate downward in a direction below the slider 2, and a die (4a , 4b, 5a, 5b). Further, each of the presses (1a, 1b) is provided with an input side feeder (8) for feeding the supplied sheet material 6 to the slider 2 side.
a, 8b) and a discharge-side feeder (9) that receives and discharges the sheet material 6 that has been pressed.
a, 9b) are provided.

Next, each part of the present apparatus will be described in detail according to the feeding order of the sheet material 6.

As shown in FIG. 1 and FIG. 2, the sheet material supply device 7 includes an alignment plate 41 erected on both sides of the elongated sheet material 6.
A plurality of sheet materials 6 can be stacked and placed between them, and a suction cup 21 for adsorbing the sheet materials 6 is held above the stacked sheet materials 6 by an air cylinder device 22 so as to be vertically movable and pressable. It is provided to be able to move forward and backward toward the machine 1a.

The feeding side feeder 8a receives the sheet material 6 from the sheet material feeder 7 and supplies it to the dies (4a, 5a) set in the press 1a. Then, as shown in FIGS. 3 and 4, the plate 53 is suspended by the guide 52 on the lower surface of the fixed platen 51 fixed to the chassis 12 of the press machine 1a so as to be slidable in the feeding direction of the sheet material 6. The plate 53 is reciprocally driven by a cylinder device 54 attached to the lower surface of the fixed board 51. An air cylinder device 56 is provided at four corners of the plate 53 and provided with vertical movement (play) by a compression spring 55, and is vertically provided. Each of the air cylinder devices 56 has a configuration in which the rod is protruded downward, and the sheet material 6 is held between the lower chuck 57 at the tip and the upper chuck 58 provided at the lower end of the cylinder body. In addition, a detent pin 59 of the lower chuck 57 is provided at the lower end of the cylinder main body and penetrates through the lower chuck 57.

Then, when the sheet material is sent from the sheet material supply device 7 between the chucks (57, 58) with the chucks (57, 58) open, the chucks (57, 58) are closed by the air cylinder device 56. The sheet material 6 is pinched, and the plate 53 is moved by the cylinder device 54 in this state in this state, so that the sheet material 6 is fed by the movement. This margin is the width required to take one back plate from the sheet material 6.

The press machine 1a for the preceding process drives the slider 2 up and down by a hydraulic piston, a crank, a link, or the like, and a die (4a, 4b, 5a, 5b) is provided below the slider 2 from the side.
Can be inserted. Further, a pair of table guide rails 11 are provided extending from the mold insertion position to below the slider 2 and to the other side. A slide table 25 is slidably provided on the pair of table guide rails 11. Rail-shaped hooks 2a are provided on both sides of the lower surface of the slider 2 so as to face the sliding direction of the slide table 25. The slide table 25 is reciprocated by a hydraulic cylinder device 29.

The sheet material 6 that has been subjected to the pressing process by the pre-press machine 1a is sent to the conveyor 13 by the discharge-side feeding device 9a.
The discharge-side feeder 9a has the same structure as that of the input-side feeder 8a.

The conveyor 13 transfers the sheet material 6 received from the discharge-side feed device 9a to the next-stage input-side feed device 8b.
The cylinder device 14 moves the sheet material 6 on the conveyor 13.

The sheet material 6 sent from the conveyer 13 is fed by the feeding side feeder 8b to the die (4
b, 5b).

The input-side feeder 8b is the same as the above-mentioned 8a, and thus the description thereof is omitted.

The press 1b for the post-process has the same configuration as the press 1a for the pre-process.

At a position below the slide 2 of the press machine 1b for the post-process, a cylinder device 31 for pushing up a molded product discharging pin 5c provided on the molds 4b, 5b) from below is provided in a vertical direction. ing. Further, a pusher (not shown) is provided beside the press machine 1b to expel the molded product pushed up onto the molds (4b, 5b) by the molded product discharge pins 5c in a horizontal direction.

The load capacity of each of the presses 1a and 1b is defined as a capacity that satisfies the maximum required load among the required loads of a plurality of dies (4a, 4b or 5a and 5b) to be selected on the slide table 25. It is enough if you have it.

The discharge-side feeding device 9b provided at the subsequent stage of the post-process press machine 1b is the same as the discharge-side feeding device 9a.

The waste material of the pressed sheet material 6 sent out from the discharge feeding device 9b is discharged to the scrap box 33 by the discharging device 10. The scrap box 33 is displaced from a line connecting the above-described devices, and is disposed diagonally on the side of the discharge-side feeding device 9b.
The discharge device 10 is disposed on the scrap box 33 from the discharge side feed device 9b.
And a cradle 35 movably provided by a cylinder device 34 toward the discharge port of the scrap box 33.
An endless belt 37 is provided, which is driven to rotate by a belt.
It is to be driven out within 33.

 Next, the mold used in this embodiment will be described.

In each mold (4a, 4b, 5a, 5b), as shown in FIG. 5, the upper mold 72 is stacked on the lower mold 71, and the engaging plate 73 is further stacked on the upper mold 72. It has a triple structure, and they are repelled from each other via springs 74 and 75, and the lower mold 71
The upper mold 72 floats above the upper mold 72 with a predetermined space, and the engagement plate 73 floats further above the upper mold 72 with a predetermined space. Also, protrusions 77 that engage with the rail-shaped hooks 2a of the slider 2 are provided on upper sides of both sides of the engagement plate 73, respectively.

Then, the mold (5a, 5
b) A mold 5a (FIG. 6) in which a chamfering die 78 and a punching die 79 are provided on the lower mold upper surface and the upper mold lower surface, respectively, and a mold in which a punching die 80 is provided on the lower mold upper surface and the upper mold lower surface, respectively. 5b
(Fig. 7) are prepared. Also, as dies (4a, 4b) for the back plate on the cylinder side, two piercing dies 81 and doweling dies 82 are provided on the lower die upper surface and the upper die lower surface, respectively. A die 4a (FIG. 8) is the same as 5b, but a punching die 4b provided with two punching dies is prepared.

 Hereinafter, the operation of the device of the present embodiment will be described.

The sheet material 6 is sent in the order of the above-mentioned devices and press working is performed. Slide table 25 of the pre-press machine 1a
The dies (4a, 5a) are set on the top, and the post-process press machine 1a
The dies (4b, 5b) are set on the slide table 25, and the dies (5a, 5b) are selected by moving the slide table 25 in each press machine (1a, 1b). I do.

First, in the sheet material supply device 7, the sheet material 6
Stacking up to 40 sheets, operating the suction cup 21 and the cylinder device 22,
The sheet material 6 sucked by the suction cup 21 is supplied to the input side feeder 8a.

In the feeding side feeder 8a, the sheet material 6 is held by the chucks (57, 58), fed at predetermined intervals by the cylinder device 54, and supplied between the upper die and the lower die of the chamfering and punching die 5a. Match. Then, when the slider 2 of the press body 1 is lowered, the mold 5a is closed, and the sheet material 6 is subjected to punching and doweling. At this time, the sheet material 6 is supplied to the input side feeding device 8a.
Of the slider 2 is absorbed by the compression spring 55, and the air cylinder device 56 is lowered together with the sheet material 6.

The chamfering and punching are repeated each time the sheet material 6 is fed by one pitch. The processed sheet material 6 is sandwiched by the chucks (57, 58) of the discharge-side feeding device 9a and fed by one pitch. Hand over to

In the conveyor 13, the sheet material 6 is intermittently fed by a cylinder device, and the input side feeding device 8 b aligns the sheet material 6 with the punching die 4 b of the post-process press machine 1 b by the same operation as the above 8 a, and the slider Press punching is performed at the descent of 2.

Since the punched back plate 5 remains in the mold 5b, the molded product discharging block 5c is pushed up by the cylinder device 31, and the back plate 5 in the mold 5b is pushed by this block 5c.
Is pushed up, the pusher operates to eject the back plate 5 in the horizontal direction and discharge it. The back plate 5 is continuously collected from one sheet material 6. The sheet material 6 after the back plate 5 has been punched is delivered to the discharge-side feeding device 9b. The discharge-side feeder 9b operates in the same manner as the input-side feeder 8a to feed the sheet material 6 to the discharger 10.

In the discharge device 10, the receiving stand 35 receives the sheet material 6 and carries it to the scrap box 33 side. Then, the endless belt 37 rotating by the motor 36 comes into contact with the sheet material 6 on the cradle 35 and falls down into the scrap box 33.

After the required number of back-plates 5 on the cylinder side are produced, the dies (5a, 5b) are replaced with dies (4a, 4b) for the cylinder-side back plate by moving the slide table 25. The positioning of the mold is performed by a stopper (not shown) that regulates the position of the slide table 25.

After the mold replacement, the punching, doweling, and punching processes are sequentially performed by the same operation as described above, and the required number of cylinder-side back plates 4 are manufactured.

After this press working, if it is necessary to press the next product further, during this press working, the previously used anti-cylinder side back plate is placed on the slide table 25 of each press (1a, 1b). The molds (5a, 5b) for use are removed, the mold to be used next is set on the slide table 25, preparation for manufacture is made, and preparations are made.

〔The invention's effect〕

As described above, according to the present invention, it is possible to use a mold obtained by dividing the mold into a plurality of processes and to reduce the mold cost.

In addition, the mold is lightweight, easy to replace the mold and takes no time, and since other molds can be set during press working, the setup in the preparation stage for manufacturing is also good,
For small lot production, the required products can be manufactured quickly when needed, in the required number, and inventory is no longer held.

In addition, since the mold is downsized, the eccentricity of the press load is reduced, and it is not necessary to consider the eccentricity when manufacturing the mold.

Furthermore, the press machine requires only a small load capacity, and it is only necessary to match the one with the largest required load among the multiple dies to be used. Compared to a press that requires a load capacity that satisfies the load obtained by adding the total required load, such as when using a mold, a smaller press can be used, which contributes to cost reduction and allows the use of separate molds for each process. Therefore, so-called dressing can be performed individually, and the inconvenience that the mold in each step is integrated into one mold has to be polished for the portion that does not need to be sharpened is eliminated.

[Brief description of the drawings]

1 to 8 show an embodiment of the present invention.
FIG. 1 is a front view showing an example of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front view showing a feeding side feeder (discharge side feeder), FIG. 5 is a front view of a punching die, FIG. 6 is a top view of a lower die of a chamfering and punching die, FIG. 7 is a top view of a lower die of a punching die, and FIG. 8 is punching and doweling. FIG. 3 is a top view of the lower die of the tool. Fig. 9 (A)
(B) is a plan view and a sectional view showing a cylinder-side back plate, FIGS. 10 (A) and (B) are a plan view and a sectional view showing an anti-cylinder back plate, and FIGS. 11 (A) and (B). FIG. 3 is a top view and a sectional view of a lower die of a conventional press die for manufacturing a back plate on the side opposite to the cylinder. 1a, 1b ... Press machine, 2 ... Slider, 4a, 4b, 5a, 5b ...
Mold, 25 ... Slide table.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-133577 (JP, A) JP-A 52-21119 (JP, U) JP-A 57-156246 (JP, U) JP-A 52-119 58042 (JP, U) Japanese Utility Model 1983-13852 (JP, U) Japanese Utility Model 58-152342 (JP, U)

Claims (1)

(57) [Claims] 1. A plurality of dies for performing a plurality of pressing steps are divided into a plurality of dies, and a plurality of press machines (1a, 1b) for performing press working by the respective dies (4a, 4b, 5a, 5b) are provided. The press machines (1a, 1b) are arranged in a row, and each of the press machines (1a, 1b) has a slide table 25 which can move up and down and can reciprocate toward a position below the slider 2;
A mold-exchange-type press apparatus characterized in that dies (4a, 4b, 5a, 5b) are placed on the slide table 25.