JPH02142636A - Die changing type press equipment - Google Patents

Abstract

PURPOSE:To make the press machine small in size and to decrease the dressing work by arranging plural sets of press equipments, providing a slider so that its up- and-down motion can be executed freely, and placing plural pieces of dies on a slide table whose reciprocating motion can be executed freely. CONSTITUTION:A throw-in side feeding device 8a receives a sheet material 6 from a sheet material supply device 7, and supplies it to a pre-process use press machine 1a. By a die 5a which is set in advance, press working of a pre-process is executed. By an ejecting side feeding device 9a, and the sheet material 6 is fed to a conveyor 13, and supplied to a post-process use press 1b by a throw-in side feeding device 8b. Subsequently, by a die 5b which is set in advance, press working of a post-process is executed, and a press working completed part is ejected by an ejecting side feeding device 9b. After a necessary number is produced, a slide table 25 moves and the dies are changed with dies 4a, 4b. In the course of this press working, the dies 5a, 5b are removed, and dies which are used in the next time are set onto the slide table 25. Since the press working is divided into two processes, the press machine becomes small in size, the dies are dressed separately, and the grinding quantum decreases.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a press apparatus, and particularly to a press apparatus that can be operated while changing a plurality of molds.

[Conventional technology]

For example, consider the case where a bank plate for a brake pad for a disc brake is manufactured by press processing.

The basic shape of a back plate for a floating type disc brake is an elongated flat plate with one long side arcuate and two holes drilled in it.
) (B) and FIGS. 10(A) and (B), the cylinder side back plate 4 and the non-cylinder side back plate 5 have different shapes. That is, since the back plate 5 on the opposite cylinder side applies a pressing force to the disc in response to the reaction of the brake force applied from the cylinder side, it is necessary to chamfer 5A the arcuate edge corner where the reaction is concentrated. There is. In addition, the cylinder side back plate 4
A dowel 4A is provided protrudingly as an indicator to notify the brake pad wear state. Therefore, the cylinder side back plate 4 and the anti-cylinder side back plate 5 must be manufactured using different molds. Further, even in the case of the same cylinder side back plate 4, the dowels 4A may be protruded at different positions for the left brake and the right brake, and in this case also, different molds must be used.

Under these current circumstances, when manufacturing the back plate 5 on the opposite cylinder side, conventional press equipment requires chamfering, piercing, and punching as shown in FIGS. 11(A) and 11(B). One mold that can perform three processes at the same time 9
0, and when manufacturing the cylinder side back plate 4, the mold was replaced with a mold that only performs drilling and punching at the same time.

[Problem to be solved by the invention]

Such conventional devices have the following problems.

■ Chamfering, perforation, and punching are all done in one mold, so
The mold became larger and the cost increased.

■ Also, because the mold is large, it takes time to replace the mold, resulting in a lack of ease of setup for manufacturing preparation.

Furthermore, because of this poor setup, it was not suitable for small-lot production, resulting in products being manufactured unnecessarily and holding inventory.

■ Furthermore, as the size of the mold increases, the eccentricity of the press load increases, and there is a problem in that the mold must be made with this eccentricity taken into consideration.

■Furthermore, the press load is approximately 100 tons for chamfering, approximately 20 tons for drilling, and approximately 120 tons for punching, so the press capacity is 240 tons, in reality it is approximately 300 tons with allowances. This requires a press machine with a high capacity, which inevitably increases the size of the press machine, leading to higher costs and the problem of taking up space for installation in a factory.

■ After a mold has been used for a certain amount of time, the surface of the mold must be polished to give it a so-called sharpening.
When the punching is done in one mold, the punched part needs to be sharpened first, but polishing for sharpening needs to be done over the entire surface of the mold. There was also the problem of having to polish chamfered and perforated portions that do not have a rough surface.

It is an object of the present invention to solve these problems.

[Means to solve the problem]

The present invention takes the following measures to solve the above problems.

The present invention has a press machine (1a) which divides a mold into a plurality of molds for performing a plurality of press steps, and performs press processing using each mold (4a, 4b, 5a, 5b).

Each press IN (la, lb) has a slider 2 that is movable up and down, and a slide table 25 that is movable reciprocally toward a position below the slider 2. This device has a slide table 25 on which molds (4a, 4b, 5a, 5b) are placed.

[Effect]

For example, the above-mentioned molds for the cylinder side back plate are used for drilling and doweling 4a and for punching 4b.
At the same time, the mold for the back plate on the opposite cylinder side is formed into two parts: one for chamfering/perforating and the other for punching 5b. do.

Two or more press machines are required, and the molds for the previous process (4a, 5a) are placed on the slide table 25 of the press machine 1a for the previous process.

In addition, the slide table 2 of the mold press machine 1b for post-processing
The molds for post-processing (4b, 5b) are placed on 5.

First, in each press machine (la, lb), the mold for the cylinder side back plate (4a
, 4b) is set under the slider 2, and the plate material for pressing is supplied to the mold 4a set in the press machine 1a for the preceding process to perform drilling and doweling.
Punching is performed using the mold 4b set in the press, and the plate material after pressing is discharged. In addition, during the manufacture of the cylinder side back plate 4, the molds (5a, 5 b) for the opposite cylinder side back plate I are placed on each slide table 25 of the press machine for the previous process and the press machine for the post process. You can set it on the top and prepare for the next work.

When the production of the cylinder side back plate 4 is completed, each slide table 25 is moved and replaced with the molds (5a, 5b) for the anti-cylinder side back plate, and the anti-cylinder side back plate 5 is manufactured.

As described above, according to the present invention, a necessary mold can be appropriately selected for press working, and other press molds can be set during the press working.

Note that the mold used in the present invention is not limited to the above-mentioned back plate mold, but various press molds can be used. Furthermore, although the mold may be divided for each process, it is not necessary to do so; for example, a mold consisting of three processes may be divided into two parts.
The mold may be divided into one mold for one process and one mold for the remaining processes.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

First, to outline the apparatus of the example, press plate material (
Hereinafter, the sheet material supplying device 7 that supplies the sheet material) 6, the press machine 1a for the previous process, the conveyor 13, the press ilb for the post process, and the sheet material 6 after being pressed by the press machine 1b for the post process will be described below. There are 10 ejectors arranged one atop each other.

Each of the presses a (la, lb) has a slider 2 that is movable up and down, and a slide table 25 that is movable back and forth in the downward direction of the slider 2. , 4b, 5a, 5b)
It is recommended to place the . Furthermore, each press machine (1a,
1 b), the supplied sheet material 6 is transferred to the slider 2
Input side feeding devices (8a, 8b) are provided to feed the sheet material 6 to the side, and discharge side feeding devices (9a, 9b) are provided to receive and discharge the sheet material 6 that has been pressed.

Next, each part of this apparatus will be explained in detail according to the order in which the sheet material 6 is fed.

■ As shown in FIGS. 1 and 2, the sheet material supply device 7 has alignment plates 4 erected on both sides of the elongated sheet material 6.
A suction cup 21 that sucks the sheet material 6 above the stacked sheet materials 6 is held by an air cylinder device 22 and is movable up and down. It is provided so as to be able to move forward and backward toward the press machine 1a.

(2) The feeding side feeding device 8a receives the sheet material 6 from the sheet material supplying device 7 and supplies it to the molds (4a, 5a) set in the press machine 1a. As shown in FIGS. 3 and 4, a plate 53 is slidably suspended in the feeding direction of the sheet material 6 by a guide 52 on the lower surface of a stationary plate 51 fixed to the chassis 12 of the press 1a. The plate 53 is reciprocated by a cylinder device 54 attached to the lower surface of the fixed platen 51. Air cylinder devices 56 are provided at the four corners of the plate 53 and are provided with vertical movement (play) by compression springs 55. Each air cylinder device 56 has a rod protruding downward, and is configured to sandwich the sheet material 6 between a lower chuck 57 at its tip and an upper chuck 57 provided at the lower end of the cylinder body.

Note that a locking pin 59 for the lower chuck 57 is provided at the lower end of the cylinder body, penetrating the lower chuck 57 and extending vertically therethrough.

Then, with the chucks (57, 58) open, the sheet material 6 is delivered from the sheet material supply device 7 to the chucks (57, 58).
8) When the air cylinder device 56 closes the chucks (57, 58), the sheet material 6 is clamped, and in this state, the plate 53 is moved by the cylinder device 54. The material 6 is sent by the amount of movement.

This feed margin is the width necessary to remove one back plate from the sheet material 6.

■ The press machine 1a for the previous process drives the slider 2 up and down with a hydraulic piston, crank, or link, and the molds (4a, 4b, 5
a, 5b) can be inserted. A pair of table guide rails 11 are provided that pass below the slider 2 and extend toward the other from the mold insertion position.

A slide table 25 is slidably provided on the pair of table guide rails 11. and,
Rail-shaped hooks 2a are provided on both sides of the lower surface of the slider 2 facing in the sliding direction of the slide table 25. The slide table 25 is a hydraulic cylinder device 29
It is driven back and forth.

(2) The sheet material 6 that has undergone the pressing process in the preceding process press ila is sent to the conveyor 13 by the discharge side feeding device 9a. This discharge side feeding device 9a has the same structure as the input side feeding device 8a, and is arranged symmetrically.

■ The conveyor 13 transfers the sheet material 6 received from the discharge side feeding device 9a to the input side feeding device 8b at the next stage, and uses the cylinder device 14 to transfer the sheet material 6 on the conveyor 13.
It moves the .

(2) The sheet material 6 sent from the conveyor 13 is fed by the feeding side feeding device 8b to the molds (4b, 5b) set in the press machine 1b for post-processing.

This feeding side feeding device 8b is the same as the previous one 8a, so its explanation will be omitted.

(2) The press machine 1b for the subsequent process also has the same configuration as the press machine 1a for the previous process.

At a position below the slider 2 of the press machine 1b for post-processing, there is a pin 5 for discharging the molded product provided in the mold (4b, 5b).
A cylinder device 31 for pushing up c from below is provided facing in the vertical direction. Furthermore, a pusher is installed beside the press ilb to horizontally expel the molded products pushed up onto the molds (4b, 5b) by the molded product discharge pins 5c.
(not shown) is provided.

Note that the load capacity of each press machine 1a, 1b is based on a plurality of molds (4a, 4a, 1b) to be selected on the slide table 25.
4b or 5a, 5b), it is sufficient to have the ability to satisfy the maximum required load.

(2) The discharge side feeding device 9b provided at the rear stage of the press machine 1b for post-processing is also the same as the discharge side feeding device 9a.

(2) The waste material of the pressed sheet material 6 sent out from the discharge side feeding device 9b is discharged into the scrap box 33 by the discharge device 10. This scrap box 33 is disposed diagonally to the side of the discharge side feeding device 9b, deviating from the line connecting each of the devices. The discharge device 10 moves the cylinder device 34 from above the scrap box 33 toward the discharge port of the discharge side feeding device 9b.
The receiver, which is movably provided at It is thrown into the scrap box 33.

[Phase] Next, the mold used in this example will be explained.

As shown in FIG. 5, each mold (4a, 4b, 5a, 5b) has an upper mold 72 placed on a lower mold 71, and an engagement plate 73 placed on top of the upper mold 72. They have a three-layer structure, and are urged against each other via springs 74 and 75, and the upper mold 72 is placed above the lower mold 71 with a predetermined space.
is floated, and the engagement plate 73 is further floated with a predetermined space above the upper die 72, and the floating gap is held by a stopper 76 so as not to open beyond a certain level. Furthermore, protrusions 77 that engage with the rail-like hooks 2a of the slider 2 are provided on the upper portions of both sides of the engaging door 3, respectively.

Then, a mold for the back plate on the anti-cylinder side (5a,
5b), a mold 5a (Fig. 6) in which a chamfering die 8 and a perforating die 9 are provided on the upper surface of the lower mold and a lower surface of the upper mold, respectively, and a mold in which a punching die 80 is provided on the upper surface of the lower mold and the lower surface of the upper mold, respectively. A mold 5b (Fig. 7) is prepared, and molds (4a, 4b) for the cylinder side back plate are prepared.
A two-cavity mold 4a in which a punching die 81 and a doweling die 82 are provided on the upper surface of the lower mold and the lower surface of the upper mold, respectively (FIG. 8);
A punching die 4b, which is similar to the above-mentioned die 5b but has two punching dies, is prepared.

(2) Hereinafter, the operation of the apparatus of this embodiment will be explained.

The sheet material 6 is sent to the above-mentioned apparatuses (1) to (2) in order and press processing is performed. Slide table 2 of pre-process press machine 1a
Molds (4a, 5a) are set on 5, and molds (4a, 5a) are set on the slide table 25 of the post-process press machine ``a''.
b, 5b) are set, and first each press machine (la, l
In b), each mold (5a, 5b) is selected by moving the slide table 25.

First, in the sheet material supply device 7, the sheet material 6 is
~40 sheets are stacked, the suction cup 21 and the cylinder device 22 are operated, and the sheet material 6 sucked by the suction cup 21 is fed to the input side feeding device 8a.

In the feeding side feeding device 8a, the sheet material 6 is held between the chucks (57, 58), and the cylinder device 54 feeds the sheet material 6 at a predetermined pitch, and the sheet material 6 is fed between the upper mold and the lower mold of the chamfering/perforating mold 5a, and placed in position. Match. Therefore, when the slider 2 of the press body 1 descends, the mold 5a closes and the sheet material 6 is perforated◆
Doweling processing is applied. At this time, the sheet material 6 remains clamped by the chucks (57, 58) of the feeding side feeding device 8a, the compression spring 55 absorbs the downward movement of the slider 2, and the air cylinder device 56 descends together with the sheet material 6. .

The chamfering and perforation processing is repeated every time the sheet material 6 is fed one pitch, and the processed sheet material 6 is held by the chucks (57, 58) of the discharge side feeding device 9a and fed one pitch at a time to the conveyor 13. Pass the uke.

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

Since the punched back plate 5 remains in the mold 5b, wait until the molded product discharge block 5C is pushed up by the cylinder device 31, and the bank plate 5 in the mold 5b is pushed up by this block 5c. The pusher operates to force out and eject the back plate 5 in the horizontal direction. 1
The back plate 5 is continuously collected from the sheet material 6. Sheet material 6 after back plate 5 is punched out
The receiver is passed to the discharge side feeding device 9b. The discharge side feeding device 9b operates in the same manner as the input side feeding device 8a to feed the sheet material 6.
is sent to the discharge device 10.

In the discharge device 10, a tray 35 receives the sheet material 6 and conveys it to the scrap holder 33. Then, the endless belt 37 being rotated by the motor 36 contacts the sheet material 6 on the stand 35 and throws it into the scrap box 33.

After producing the required number of back plates 5 on the opposite cylinder side,
By moving the slide table 25, the molds (5a, 5
b) into cylinder side back plate molds (4a, 4b)
). Slide table 25 is used to position the mold.
This is done using a stopper (not shown) that regulates the position of the .

After the mold is replaced, drilling, doweling, and punching are sequentially performed in the same manner as before, and the required number of cylinder-side back plates 4 are manufactured.

After this pressing process, if it is necessary to press the next product, each press machine (
Starting from the top of the slide table 25 (5a, 5),
b) is removed, the mold to be used next is set on the slide table 25, and preparations are made for manufacturing.

〔Effect of the invention〕

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

Furthermore, the mold is lightweight, making it easy and time-saving to replace the mold.Furthermore, other molds can be set during press processing, making it easy to set up during the preparation stage for manufacturing. Suitable for lot production, it is possible to quickly manufacture the necessary products in the necessary quantity at the necessary time, eliminating the need to keep inventory.

Furthermore, since the mold has become smaller, the eccentricity of the press load is reduced, and it is no longer necessary to take eccentricity into consideration when manufacturing the mold.

Furthermore, the load capacity of the press machine is small and can be matched to the one with the largest required load among the multiple molds used. Compared to a press machine that requires a load capacity that satisfies the total required load, such as when using a mold, a smaller press machine can be used, contributing to cost reduction.
Since separate molds can be used for each process, so-called sharpening can be performed individually, and the molds for each process can be integrated into one mold without polishing the parts that do not need sharpening. The inconvenience of not being able to do it is gone.

[Brief explanation of the drawing]

1 to 8 are diagrams showing 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 an input side feeding device (discharge side feeding device), and FIG. 4 is a side view thereof. Fig. 5 is a front view of the punching die, Fig. 6 is a top view of the lower die of the chamfering/perforating die, Fig. 7 is a top view of the lower die of the punching die, and Fig. 8 is a perforating/doweling die. It is a top view of the lower mold of the mold for use. Figure 9 (A)
(B) is a plan view and a sectional view showing the back plate on the cylinder side, FIGS.
) is a top view and a cross-sectional view of the lower mold of a conventional press mold for manufacturing a back plate on the side opposite to the cylinder. la, lb...press machine, 2...slider, 4a. 4b, 5a, 5b...Mold, 25...Slide table.

Claims (1)

[Claims] (1) Divide the mold into multiple parts to carry out multiple pressing processes,
It is a press device in which a plurality of press machines (1a, 1b) are provided and arranged for performing press processing using each mold (4a, 4b, 5a, 5b), and each of the press machines (1a, 1b)
has a slider 2 that is movable up and down, and a slide table 25 that is movable back and forth toward a position below the slider 2, and a mold (4) is mounted on the slide table 25.
a, 4b, 5a, 5b) is placed thereon.