JPH02127999A - Die changing type pressing apparatus - Google Patents

Abstract

PURPOSE:To use miniaturized dies dividing into plural processes by parallel arranging plural Y directional slide tables on a X directional slide table in X-Y stage and laying the dies on the Y directional slide tables. CONSTITUTION:The dies 5a, 5b for the first set are laid on the first Y directional slide table 25. The first Y directional slide table 25 is matched to the die inserting position at lower part of a slider 2 with the X directional slide table 22 and the first Y directional table 25 is shifted and selected so as to come the die 5a for chamfering and boring below the slider 2. A sheet material is supplied between the upper die and the lower die, and by descending the slider 2, the upper die is pushed down to execute the chamfering and boring works. Successively, the first Y directional table 25 is again shifted and selected so as to come the die 5b for punching below the slider 2. After that, the sheet material already executing the chamfering and boring works is supplied between the upper and lower dies 5b for punching and the punching work is executed to manufacture a reverse cylinder side back plate.

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 back 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 bored therein, as shown in Figure 11 (
As shown in A)(B) and FIG. 12(A)(B),
The cylinder side back plate 4 and the anti-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 arc-shaped edge corner where the reaction is concentrated. Furthermore, a dowel 4A is provided protruding from the cylinder side back plate 4 as an indicator to notify the wear state of the brake pad. 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 end key, and in this case also, different molds must be used.

Under such 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. 13(A) and 13(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.

■ Also, 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 account.

■Furthermore, the press load is approximately 100 tons for chamfering, approximately 20 tons for drilling, and approximately 120 tons for punching, so the press machine's capacity is 240 tons, and in reality, the load capacity is approximately 300 tons with allowances. This requires a press machine with a large size, which inevitably increases the size of the press machine, leading to increased 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 includes a press main body 1 having a slider 2 movable up and down, and a plurality of molds (4a, 4b, 5a).

5b) and moves to set an arbitrary mold below the slider 2. The X-Y stage 3 moves in the X direction along the press body 1. A plurality of X-direction slide tables 25 that are movable in the X-direction downward of the slider 2 are arranged in parallel on a freely movable X-direction slide table 22, and molds (4a, 4b, 5a, 5b) are placed thereon.

Here, on each X-direction slide table 25, there are a plurality of molds (4a, 4b, 5a) formed separately for each process.
, 5b), and the mold is preferably selected by moving the slide table 25 in the X direction. Of course, one mold may be placed on each X-direction slide table 25.

[Effect]

For example, the premise is that the aforementioned mold for the back plate on the opposite cylinder side is divided into two molds, one for chamfering/perforating and the other for punching δb, and these first iJ
The first molds (5a, 5b) are placed on the first X-direction slide table 25.

First, use the X-direction slide table 22 to align the first X-direction slide table 25 with the mold insertion position below the slider 2 of the press main body 1, move the first X-direction slide table 25, and move the first X-direction slide table 25 below the slider 2. The mold 5a for chamfering and perforation is selected so as to be placed at the position. Then, a sheet material, which is a metal plate, is supplied between the upper mold and the lower mold, and the slider 2 is lowered to push down the upper mold to perform chamfering and perforation.

When that is finished, move the first X-direction slide table 25
Move the die again and place the punching die 5b under the slider 2.
Select so that it will come. Thereafter, the chamfered and perforated sheet material is supplied between the upper and lower molds of the punching mold 5b, and punching is performed to manufacture the back plate 5 on the opposite cylinder side.

This process is repeated to manufacture the required number of back plates 5.

Also, during this time, the molds for the cylinder side back plate, which were formed separately into two molds, one for punching/doweling 4a and the other for punching, were placed on the second X-direction slide table 25. and prepare it.

After manufacturing the back plate 5 on the opposite cylinder side,
Move the direction slide table 22, align the second X direction slide table 25 with the mold insertion position below the slider 2 of the press main body 1, move the second X direction slide table 25, The die 4a for punching and doweling is positioned below to perform drilling and doweling, and then the second X-direction slide table 25 is moved again to select the die 4b for punching, and the punching process is performed. Then, the cylinder side back plate 4 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.

〔Example〕

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

First, to give an overview of the apparatus of the embodiment, a press main body 1 is provided with a slider 2 that is movable up and down, and below the slider 2 is an X-Y stage 3 that is movable in the X and X directions. It is provided.

A plurality of molds (4a, 4b, 5a, 5b) formed separately for each process are placed on the X-Y stage 3. In addition, molds (4a, 4b, 5a,
In 5b), a sheet material 6 made of iron plate of a predetermined length is used as a press material.
A sheet material supply device 7 is arranged to supply the sheet material. An input side feeding device 8 is provided between the sheet material supply device 7 and the press machine main body 1, and feeds the sheet material 6 supplied from the sheet material supply device 7 to the press machine main body 1 side. The sheet material 6 that has been pressed by the press body 1 is placed on the opposite side of the input side feeding device 8 with the machine body 1 in between.
A discharge side feeding device 9 for receiving and discharging the sheet material 6 is provided, and a skeleton discharge device 10 for receiving and discharging the sheet material 6 from the discharge side feeding device 9 is further provided.

Next, each part of this device will be explained in detail.

■The press body 1 has a slider 2 with a hydraulic piston.
It is driven up and down by a crank or link, etc., and the mold (4a
, 4 b, 5 a, 5 b) 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. Also, slider 2
The molds (4a, 4b, 5
Rail-shaped hooks 2a are provided opposite to each other for slidingly introducing and holding the upper sides of the parts a and 5b). As for the load capacity of this press machine, the X-Y stage 3
Multiple molds to be selected (4a, 4b, 5a, 5
It is sufficient to have the ability to satisfy the maximum required load among the required loads in b).

■The X-Y stage 3 has multiple molds (4a, 4b, 5a, 5b) as shown in Figures 1, 2, and 4.
1 set 4a, 4b or 5
Either mold a or mold 5b is selected and guided and positioned below the slider 2. To explain the configuration of the X-Y stage 3, first, the sheet material supply device 7→
Loading side feeding device 8 → Press machine main body 1 → Discharging side feeding device 9
→ A hydraulic cylinder device 21 called a skeleton discharge device 10 installed beside the press body 1 along the flow direction of the sheet material 6 reciprocates on the rail 20 in a direction parallel to the flow direction of the sheet material 6 (X direction). A freely slidable X-direction sliding table 22 is provided. This X direction slide table 2
2, two pairs of guide rails 23 are arranged in parallel, and each guide rail 23 runs in a direction perpendicular to the flow direction (Y direction = direction from above the X direction slide table 22 to below the slider 2). suitable for In each set of guide rails 23, a plurality of guide rollers 24 are arranged on the inside facing each other, and an X-direction slide table 25 is placed on each guide roller 24.

The slide stroke of the X-direction slide table 22 has a length that allows the ends of the two X-direction slide tables 25 to be alternately positioned at mold insertion positions into the press body 1. A long hole 26 having the same length as this slide stroke is bored in the X-direction slide table 22.

A cylinder device 2 is located within the elongated hole 26 and faces the mold insertion position, facing in the vertical direction.
7 is arranged, and a stopper 2 is provided at the tip of the rod of this cylinder device 27 to go in and out from the elongated hole 26 upwardly.

On the other hand, on the side of the press body 1 opposite to the mold insertion position,
Hydraulic cylinder device 2 for driving the direction slide table 25
9, whose rod passes between the pair of table guide rails 11 provided below the slider 2 and extends to the mold insertion position. At the tip of this rod, a hook 30 that can be freely engaged and detached from the end of the X-direction slide table 25 is provided. Then, the X-direction slide table 25 is hooked onto this hook 30, pulled by the rod of the hydraulic cylinder device 29, and moved onto the table guide rail 11 side.
The mold slides on a pair of table guide rails 11 (
4a, 4b, 5a, 5b) below slider 2.

Also, when the molds (4b, 5b) come to this position below between the press body 1 and the hydraulic cylinder device 29, the molded product ejection pin 5C provided on the molds (4b, 5b) is inserted. A cylinder device 31 for pushing up from below is provided facing in the vertical direction.

Roughly, in line with this cylinder device 31, the molds (4b, 5b) are placed next to the press body 1 with molded product ejection pins 5C.
A pusher 32 is provided to horizontally expel the molded product pushed upward.

Next, as shown in FIG. 3, the sheet material supply device 7 has a pair of parallel alignment plates 41 erected at a distance slightly wider than the width of the elongated sheet material 6. Inside, the sheet materials 6 are separated by a magnetic separator and supplied, and a plurality of sheet materials 6 can be placed thereon, and a counter (not shown) that holds down the sheet materials 6 pushed upward onto the top of the alignment plate 41 is provided. A stopper is provided. A cylinder device 44 is provided that pushes the end of the sheet material 6 placed on the top and pushes it into the input side feed device 8 side.

■As shown in FIG. 4 and FIG.
A plate 53 is slidably suspended in the feeding direction of the sheet material 6 by a guide 52 on the lower surface of the plate 53.
is adapted to be reciprocated by a cylinder device 54 attached to the lower surface of the fixed platen 51. And plate 53
An air cylinder device 56 provided with vertical movement (play) by compression springs 55 is provided at the four corners of the air cylinder device 56 and is vertically disposed. 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 58 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.

(2) The discharge side feeding device 9 has the same structure as the input side feeding device 8, and is arranged symmetrically.

The sheet material 6 discharged by the discharge side feeding device 9 is received by a skeleton discharge device 10.

(2) Next, the mold used in this example will be explained.

Each mold (4a, 4b, 5a, 5b
), as shown in FIG.
3 is stacked on top of each other, and they are urged together via springs 74 and 75, and the upper mold 72 floats above the lower mold 71 with a predetermined space, and further above the upper mold 72 with a predetermined space. With this, the engagement plate 73 floats, and the floating interval is held by a stopper 76 so that it does not 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 engagement plate 73, respectively.

Then, a mold for the back plate on the anti-cylinder side (5a,
5b), a mold 5a (Fig. 8) 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. 9) was prepared, and a punching die 81 and a doweling die 82 were provided on the upper surface of the lower mold and the lower surface of the upper mold, respectively, as molds (4a, 4b) for the cylinder side back plate. Two-cavity mold 4a and (10th
), a punching die 4b is prepared which is similar to the above-mentioned die 5b but has two punching dies.

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

On the first X-direction slide table 25, a punching die 5b is placed and fixed at a position close to the press body 1, and a chamfering/perforating die 5a is placed and fixed at a position far from the press body 1. Ru.

Then, the first X-direction slide table 25 is aligned with the mold insertion position of the press main body 1 using the X-direction slide table 22, and the first X-direction slide table 25 is moved to the hook 3.
0 and is pulled by the rod of the hydraulic cylinder device 29 to advance onto the table guide rail 11, and the chamfering/perforating mold 5a is set under the slider 2.

Next, the sheet material 6 is sent from the sheet material supply device 7 to the input side feeding device 8, and is clamped by chucks (57, 58).
It is sent at predetermined pitches by a cylinder device 54 and supplied between the upper and lower molds of the chamfering/perforating mold 5a. Therefore,
When the slider 2 of the press body 1 descends, the mold 5a closes, and the sheet material 6 is chamfered and perforated. At that time, the sheet material 6 is chucked (57,
58), the downward movement of the slider 2 is absorbed by the compression spring 55, and the air cylinder device 56
is lowered together with the chucks (57, 58).

When the chamfering and drilling press are completed, the hydraulic cylinder device 2
The X-direction slide table 25 is pushed back by 90 rods until it comes into contact with the stopper 28, and the punching die 5b is set under the slider 2 at that position. During this mold exchange, the sheet material 6 is held by the chucks (57, 58), and the molds (5a, 5b) are in an open state.

Then, the slider 2 descends to close the mold 5b, and punches out the area around the chamfered and perforated portion of the sheet material 6.

When the first press is completed, the sheet material 6 is fed by one pitch by the feeding side feeding device 8, and chucked (57, 58).
opens and returns to its original position, so the sheet material 6 is held again. Then, the X-direction slide table 25 advances again and the chamfering/perforating mold 5a is set under the slider 2. At that time, the punching die 5b is positioned above the cylinder device 31 for pushing up the molded product ejection pin 5c, and therefore the molded product ejection bin 5c is pushed up by this cylinder device 31, and this pin Since the back plate 5 in the mold 5b is pushed up at 5c, it is pushed out and discharged in the horizontal direction by the pusher 32. Back plates 5 are continuously collected from one sheet material 6.

After the back plate 5 has been punched out, the sheet material 6 is transferred to a discharge side feeding device 9. The discharge side feed device 9 operates in the same manner as the input side feed device 8 and feeds the sheet material 6 to the skeleton discharge device 60.

When the required number of back plates 5 on the opposite cylinder side have been manufactured, the stopper 2 is lowered and the first X-direction slide table 25 is returned onto the X-direction slide table 22.
Move the X-direction slide table 22 and position the second X-direction slide table 25 on which the molds (5a, 5b) for the cylinder side back plate are placed at the mold insertion position of the press body 1. Then, the cylinder-side back plate 4 is manufactured in the same manner as before by exchanging the punching/doweling mold 4a and the punching mold 4b.

On the second X-direction slide table 25, the punching die 4b is placed and fixed at a position close to the press body 1, and the punching/doweling die 4a is placed and fixed at a position far from the press body 1. However, the setting may be performed at the same time as setting the molds for the back plate on the anti-cylinder side (5a, 5b), but it can also be done during the manufacture of the back plate on the anti-cylinder side.

〔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.
Because separate molds can be used for each process, so-called sharpening can be performed individually, and the molds for each process integrated into one mold also sharpen parts that do not need sharpening. The inconvenience of not being able to do it is gone.

[Brief explanation of the drawing]

1 to 10 are diagrams showing one embodiment of the present invention, in which FIG. 1 is a plan view showing an example of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof. Fig. 4 is a partial perspective view of the mold, Fig. 5 is a front view showing the feeding side feeding device (discharging side feeding device), Fig. 6 is its side view, Fig. 7 is a front view of the mold, and Fig. 8 The figure is a top view of the lower mold for chamfering and drilling, FIG. 9 is a top view of the lower mold for punching, and FIG. 10 is a top view of the lower mold for punching and doweling. FIGS. 11(A) and 11(B) are a plan view and a sectional view showing the cylinder side back plate,
Fig. 12 (A) (B) is a plan view and a sectional view showing the back plate on the opposite cylinder side, and Fig. 13 (A) (B) is the upper surface of the lower die of a conventional press die for manufacturing the back plate on the anti-cylinder side. They are a figure and a sectional view. 1 ・◆Brace machine body, 2 ◆◆Slider, 3 ◆ 4a. 22・ 25・ ◆X-Y stage, 4b, 5a, 5b...Mold, ・X direction slide table, ・X direction slide table.

Claims (1)

[Claims] (1) Press main body 1 with slider 2 movable up and down
and an X-Y stage 3 for setting an arbitrary mold below the slider 2 by placing and moving a plurality of molds (4a, 4b, 5a, 5b), 3, a plurality of Y-direction slide tables 25 that are movable in the Y-direction downward of the slider 2 are arranged in parallel on an X-direction slide table 22 that is movable in the X-direction along the press body 1. A mold exchange type press device characterized in that molds (4a, 4b, 5a, 5b) are placed on a direction slide table 25.