JP2739104B2 - Press processing equipment - 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 machine for punching a hoop material by a progressive die.

[0002]

2. Description of the Related Art When punching a part from a metal hoop material, a progressive die is mainly used. A press machine equipped with a progressive die conveys a work made of hoop material into a mold, performs punching in a plurality of times, and sequentially sends out a predetermined amount of work in each punching process. ing.

A work conveyed into a mold is supported by lifter pins provided on both sides of the work so as to slightly float from a die plate for each work stage in which a plurality of punching processes are performed. I have. The lifter pins guide the work in the transport process and prevent deformation of the work due to punching.

As described above, the work conveyed into the mold is curved because the hoop state is pulled out, and the straightening process is folded during the conveyance, but the work is not completely flat. It is in a state. Therefore, in order to support both sides of the work in the groove of the lifter pin, the operator manually guides the work to the groove of the return pin. When the punch is moved up and down in this state to perform the first punching, the punched tip, which is the portion supported by the lifter pins, tends to deform upward.
For this reason, for the next punching step, the work is guided again to the groove of the next lifter pin, and then the second punching is performed by the second punching up and down. Similarly, an operator guides a work to a groove of a lifter pin until punching in a final processing stage of a progressive type is completed.

[0005]

In the above-mentioned conventional example, every time a work is sent to each processing stage, an operator must work by putting his / her hand in the elevating area of the mold. It is very dangerous because the punch goes up and down, and there is an occupational safety problem. Further, since manual work is required every time the supply of hoop material is updated, it is difficult to make a fully automatic press line concept, which is a bottleneck for fully automatic press lines.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the danger of working in a press working device and to enable full automation of press working.

[0007]

In order to achieve the above object, the press working apparatus of the present invention is characterized in that a progressive feed type press working apparatus is provided with the following work guide device.

The above-described work guide device advances and retreats in a direction perpendicular to the direction in which the work is conveyed, and a guide groove having a horizontal opening formed in a V-shape on each opposing side, and allows each lifter pin to escape at the time of advance. A pair of work guides having an escape groove, a work guide driving cylinder to which each work guide is attached so as to be able to advance, a guide support plate for slidably supporting each work guide, and a pair of work guides An interlocking mechanism for interlocking the work guides in opposite directions, and a return spring provided between the pressing plate and the guide support plate, which are a part of the interlocking mechanism, are provided.

In the above means, it is preferable that the guide support plate is fixed to both sides of the die plate, and the interlocking mechanism is provided in the backing plate.

As another means, a work guide device includes a guide drive cylinder mounted on a press body so that each work guide can advance, a guide support plate for slidably supporting each of the work guides, A pair of interlocking mechanisms for interlocking the pair of work guides in directions opposite to each other, a return spring provided between a pressing plate and a guide support plate which are a part of each interlocking mechanism, And a sub-roller mechanism for fine adjustment of the amount of movement of the work provided at the transfer port.

In this means, it is desirable that the guide support plate and the interlocking mechanism are fixed to both sides of the backing plate and to the upstream end and the downstream end in the work conveyance direction.

[0012]

When the hoop-shaped work enters the die plate, a pair of work guides provided in the work guide device are advanced inward by the work guide driving cylinder, and the work is guided into the guide groove of the work guide. It is apparently horizontal. At this time, each lifter pin is released by each release groove provided in the work guide,
When the work guide advances to a predetermined position, the work is guided to the guide groove. As the work continues to enter further, both sides are engaged with the grooves of the lifter pins and are supported while slightly floating on the die plate.

When the work reaches the punch stage, both work guides are retracted by the interlocking mechanism, the punch is lowered, punching is performed, and the punch is raised again. Thereafter, the work guide advances again and guides the work distorted by punching to the groove of the lifter pin via the guide groove. The work is sequentially fed one after another, and each time the work guide advances and retreats, it is guided to a groove of a lifter pin provided at a position where the work enters. When the work enters the last punch stage, the work is supported by the grooves of all the lifter pins, and guidance by the work guide is no longer necessary. Thereafter, the work guide does not operate, and the work is guided and transported only by the lifter pins.

Since the work guide driving cylinder is attached to the press machine main body, complicated wiring and piping are not attached to the mold, and the mold can be easily replaced. In addition, the link mechanism links a pair of work guides with a single cylinder.

If the work guide support plate is fixed to both sides of the die plate, it can be easily applied to existing press machines.

In other means, since the guide support plate and the interlocking mechanism are provided at the upstream end and the downstream end in the work conveyance direction, they can be easily attached. Further, the sub-roller for fine adjustment of the movement amount of the work accurately adjusts the position of the work when guiding the work to the lifter pin.

[0017]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a backing plate 2 is fixed on a lower mold holder 1, and a die plate 3 is fixed thereon. The lower die holder 1 is fixed to a bolster plate of a press machine (not shown).
The die plate 3 is provided with three types of female dies for press working that are formed so as to be compatible with a progressive die.

The backing plate 2 and the die plate 3 are provided with holes 2a, 3a facing each other. The hole 2a is formed to have a larger diameter than the hole 3a. The communicating part with 3a is stepped.

Lifter pins 4 are arranged on the die plate 3 in two rows of three each along the traveling direction of the workpiece W. Each lifter pin 4 is implanted in holes 2 a and 3 a provided in the backing plate 2 and the die plate 3, and the shaft protrudes above the die plate 3.
"a" is caught by a step formed by the hole 2a and the hole 3a so that it cannot escape upward. A compression spring 5 is embedded in each of the holes 2a of the backing plate 2. One end of the compression spring 5 is in contact with the head 4a of the lifter pin 4, and urges the head upward. In the vicinity of the upper end of the shaft of the lifter pin 4, there is provided a groove 4b for supporting the side of the workpiece W.

Above the die plate 3, there is provided an upper die holder 7 which is guided by four guide posts 6 to move up and down. An upper die backing plate 8 is fixed to the lower surface of the upper die holder 7, and a punch pad 9 is further fixed to the lower surface thereof. Further, on the lower surface of the punch pad 9, a punch 10 provided with three male stamping dies corresponding to the female die of the die plate 3 is fixed.

The periphery of the lower end of the punch 10 is surrounded by a stripper 11, and both the punch 10 and the stripper 11 are passed through stripper guides 12, 12 supporting the stripper 11 and stripper springs 13, 13. And slide relatively in the axial direction. The stripper 11 is urged downward by a stripper spring 13, and when the upper die holder 7 is lowered, the work W is pressed against the upper surface of the die plate 3 and the punch 10 is lifted after the punching is completed. The function is such that the work W is not lifted by the punch 10.

The lower die is provided with a work guide device G. Next, the work guide device will be described. Guide support plates 14 and 14 are fixed to both sides of the die plate 3 (side surfaces along the direction of entry of the work W), and work guides 15 are supported on the insides of the support plates 14 via shaft portions 15a. ing. Pressing plates 16, 16 are connected to the other end of each shaft 15a. Each pressing plate 16
Is formed in an elongated plate-like body, which is connected to the shaft portion 15a at the center thereof, and a vertical connecting plate 17 forming an interlocking mechanism R of the work guide 15 is fixed to a lower side of the center portion.

The interlocking mechanism R comprises a pair of vertical connecting plates 17, 17 and horizontal connecting plates 18, 18 and a pinion 19, respectively.
Consists of The vertical connecting plate 17 provided on one side hangs down to the middle of the concave portion 2b provided on the backing plate 2, and the lower end is provided with an end of a horizontal connecting plate 18 provided horizontally in the backing plate 2. It is stuck. The other vertical connecting plate 17 connected on the other side is fixed to the other horizontal connecting plate 18 provided horizontally on the upper surface of the lower die holder 1 and in the concave portion of the backing plate 2.

The two horizontal connecting plates 18, 18 are provided so as to oppose each other over a range approximately half from the inner end, and the opposing surfaces are provided with rack portions 18a, 18 respectively.
a is engraved. A pinion 19 is provided between the opposing surfaces so as to be pivotally supported on opposing wall surfaces of the concave portion 2b of the backing plate 2 so that the connecting plates 18 can be interlocked in opposite directions. These interlocking relations by the interlocking mechanism R extend to the respective work guides 15, 15 connected thereto, so that the work guides 15, 15 can move forward and backward in opposite directions.

A work guide driving cylinder 21 is provided on the opposite surface (right side in FIG. 1) of the one pressing plate 16 opposite to the contact portion with the shaft portion 15a. The cylinder 21 is fixed to a cylinder support member 20 fixed to a press device body (not shown). The output rod 21a of the cylinder 21 is
The pressing plate 16 is in contact with the center of the pressing plate 16, and the pressing plate can be pushed inwardly into the upper surface of the die plate 3. Shaft 1
A return spring 22 composed of a compression coil spring is wound around 5a, and a biasing force is exerted between the guide support plate 14 and the pressing plate 16 by bringing their ends into contact with each other. The output rod 21a of the cylinder 21 is
Is retractable, the work guides 15, 15 can be returned to the retracted position.

Next, the operation will be described. First, one end of the hoop-shaped work W is fed onto the die plate 3 by a work feeder (not shown). When the tip of the work W reaches the boundary of the first punch stage provided on the die plate 3 (indicated by a two-dot chain line L1), detection data by a sensor (not shown) detects this, and Cylinder 21 of work guide device G
Starts, and pushes the pressing plate 16 inward by the output rod 21a. As a result, the interlocking mechanism R operates to
The pair of work guides 15 and 15 move in a direction approaching each other to reduce the distance between each other, and guide both sides of the work W to the guide grooves 15b and 15b through the horizontal opening of the V-shaped portion.

As the work W continues to enter, both sides of the work W are guided by the groove 4b of the lifter pin 4 located in the relief groove 15c of the work guide. Subsequently, when the workpiece W reaches the boundary (indicated by a two-dot chain line L2) on the opposite side of the first punch stage, the entry of the workpiece W is stopped, and the driving rod 21a of the cylinder 21 moves backward. As a result, the pressing plates 16, 16 return to the original position by the return spring 22, and the respective work guides 15, 15 also return to the original positions in conjunction with each other.

At this point, the punch 10 descends to perform the first punching on the first punch stage, thereby processing the first processing portion P1 having a U-shaped contour formed of narrow grooves. At this time, as shown in FIG. 3, the tip of the work W is in a state in which the tip is curved upward by punching.
When the punch 10 rises, the work guides 15, 15 are again activated.
Guides the work W to be sent out to the groove 4b of the lifter pin 4 provided at the next position, and advances the work W to the boundary of the second punch stage (indicated by a two-dot chain line L3). Here, the work W stops, and at the same time, each work guide 15, 15 retreats, whereupon the punch 10 descends to process the bent part as the second processing part P2 in the second punch stage. At the same time, in the first punch stage, the next first processing portion P1 is processed.

Similarly, when the work W enters the boundary of the third punch stage (indicated by a two-dot chain line L4), the work W is supported by all the lifter pins 4. In this state, the third processing portion P3 is cut, and the processed component is separated and dropped downward. At this time, in the first and second punch stages, the first processing portion P1 and the second processing portion P2 are processed, respectively.

As described above, the press working is performed continuously by the progressive working three times. If the work W is supported by all of the lifter pins 4 in the three forward feeding processes, subsequent work feeding is performed by the lifter pins 4, so that guidance by the work guides 15 and 15 becomes unnecessary. Therefore, the work guides 15 and 15 are made to stand by at the retracted position to prepare for switching of the next work W. As a result, the work step of setting the work W by the operator is not required for the supply of the work W, so that it is possible to achieve improvement in work safety and complete automation of press working.

In this embodiment, since the work guide driving cylinder 21 is attached to the press machine main body, complicated wiring and piping are not provided to the die, so that the configuration is simplified, and the die can be easily replaced. It also contributes to the promotion of automated mold change. Further, since an interlocking mechanism is provided, it is sufficient to provide only one cylinder, and this is also advantageous in cost.

In this embodiment, the number of forwards is three, but the number of forwards is not limited to three, but may be an arbitrary number according to the form of a product to be processed. Next, another embodiment will be described. As shown in FIGS. 4 to 6, the basic configuration of the press device body is the same as that of the above-described embodiment, and the common elements are obtained by adding 30 to the numerical values used in the above-described embodiment. Here, the duplicated description will be omitted.

A bolster plate 49 supporting the lower die holder 31 has a cylinder supporting member 50 with bolts 52,
It is fixed by 52. Cylinder support member 50
, A work guide driving cylinder 51 is attached. The output rod 51 a of the cylinder 51 is in direct contact with the center of the work guide 45.

A total of two sets of the interlocking mechanisms R are provided, one set at each end of the backing plate 32. These interlocking mechanisms R are provided via a work guide mounting block E at the upstream end and the downstream end of the work W in the transport direction and at the front and rear portions of the backing plate 32. The mounting block E has an opening having a U-shaped cross section in contact with the upper surface of the lower mold holder 31, and has one side fixed to the front and rear portions of the backing plate 32, respectively. Are the work guide support plates 44, 44, respectively.
Is stuck.

Further, in the mounting block E, the horizontal portions of the L-shaped pressing plates 46, 46 are positioned so as to face each other, and the vertical portions face the work guide supporting plate 44. . Each pressing plate 46 is a work guide 45
, And can be interlocked with the work guide 45. Rack portions 46a, 46a are formed on opposing surfaces of the horizontal portions of the pressing plate 46, and each rack portion is engaged with a pinion 47 which is supported by the work guide mounting block E.

The pressing plates 46, 46 are driven by the pinion 47.
Work in conjunction with each other, and the respective work guides 45, 4
5 can be linked in the reverse direction. Work guide 4
The return springs 48 are attached to the respective shaft portions 45a,
Is wound and urges the work guide 45 outward, so that when the output rod 51a of the cylinder 51 is retracted, the work guide 45 and the pressing plate 46 can return to the original positions.

Immediately before the guide support plate 44 at the transfer port of the work W, a sub-roller mechanism S for fine adjustment of the work to be fed is provided. The sub roller mechanism S has the following configuration.

At the front end of the bolster plate 49, a roller support plate 53 whose front end is bent forward near the upper end is fixed, and a driving roller 54 is supported at the front end of the roller support plate. The drive roller 54 is rotatable by a motor 56, and the motor 56 is fixed to a motor mounting plate 55 fixed to a bolster plate 49. The roller shaft 54a and the motor shaft 56a are connected by a coupling 57.

In the middle of the front surface of the roller support plate 53, a tension cylinder 59 is mounted via a cylinder fixing plate 58. The cylinder support plate 5 is provided on the roller support plate 53.
A sub-roller support plate 62 is slidably attached to the slider shaft 60 via a slider 61 slidably fitted to the slider shaft 60. Sub roller support plate 6
A sub-roller 63 is pivotally supported at the tip of the bent portion 2. A sensor 64 is fixed to the roller support plate 53, and the sensor 64 can detect an origin position for processing the workpiece W.

Next, the operation and operation of this embodiment will be described. First, the operator inserts the tip of the work W between the rollers 54 and 63 of the sub-roller mechanism S. Since the sub-roller mechanism S is provided at a position outside the vertical range of the upper die, the operation can be performed safely. At the same time, the work guide 45 is moved by the work guide driving cylinder 51.
Are moved forward, and each is approached by the interlocking mechanism R. Each work guide 45 moves the work W to the lifter pin 34.
Have reached the guideable position, the work guide 45 enters a standby state. At the same time, the sub-roller 63 is raised by the tension cylinder 59, and the work W is sandwiched between the two rollers 54 and 63. When the drive roller 54 is rotated by the motor 56 in this state, the work W moves forward and enters both sides to a position where the work W is supported by the guide groove of the work guide 45.

When the leading end of the work W reaches a preset origin position, the work origin position detection sensor 64 operates to stop the work W from entering. At the same time as the driving roller 54 stops, the sub-roller 63 is lowered by the tension cylinder 59, and the work W is sent out by one pitch by a work feeder (not shown) provided in the press device body instead. As a result, the tip of the work W is sent out to the tip of the first punch stage. When the tip end of the work W has reached this point, both sides of the work W are formed in the grooves 3 of the lifter pins 34, 34 already provided at the most upstream side.
4b and 34b. Here work guide 4
5, 45 are retracted, and the punch 40 is moved up and down to punch the first processing portion in the same manner as in the previous embodiment. Subsequent operations are performed in the same manner as in the above embodiment.

In this embodiment, since the interlocking mechanism R is provided outside the backing plate 32, it can be easily applied to an existing press device by additional processing.
By adopting the sub-roller mechanism, automation is further promoted, so that 24-hour operation by full automation can be realized.

[0043]

According to the present invention, since the work guide driving cylinder is attached to the press machine main body, complicated wiring and piping are not applied to the mold, so that the configuration is simplified and the mold can be easily replaced. It also contributes to the promotion of automated mold change. Further, since a work guide interlocking mechanism is provided, only one cylinder needs to be provided, which is also advantageous in terms of cost.

If the interlocking mechanism is provided in the backing plate, it can be easily applied to an existing general-purpose press. Further, by providing a sub-roller mechanism, automation is further promoted.
Four hours of operation is possible.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a main part according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a side view showing a state where the work is supported by a lifter pin provided near a transfer port.

FIG. 4 is a partially cutaway cross-sectional side view without a sub-roller mechanism in another embodiment of the present invention.

FIG. 5 is a side view of a main part according to another embodiment of the present invention.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

[Explanation of symbols]

 2,32 backing plate 3,33 die plate 4,34 lifter pin 4b, 34b groove 9,39 punch pad 10,40 punch 11,41 stripper 14,44 guide support plate 15,45 work guide 15b, 45b guide groove 15c, 45c Escape groove 16, 46 Press plate 21, 51 Work guide driving cylinder 22, 48 Return spring G Work guide device W Work R Interlocking mechanism S Sub roller mechanism

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Mitsuru Matsuda 4-1-1, Taihei, Sumida-ku, Tokyo Inside Seikosha Co., Ltd. −2186 (JP, B1)

Claims (4)

(57) [Claims] 1. A die plate fixed on a backing plate, a plurality of lifter pins arranged so as to support both sides of a work conveyed on the die plate, and a lifter that can move up and down above the die plate. A punch fixed to the provided punch pad, a stripper provided to be able to move in parallel with the punch, and a work guide device for guiding the work being conveyed to the groove of the lifter pin; The apparatus is provided with a guide groove which reciprocates in a direction perpendicular to the conveying direction of the work, has a horizontal opening formed in a V-shape on each opposing side, and an escape groove for releasing each of the lifter pins at the time of advance. A pair of work guides, a work guide driving cylinder to which each of the work guides is attached so as to be able to advance, and a slide of each of the work guides. A guide support plate which rotatably supports, the interlock mechanism for interlocking the pair of work guide in opposite directions,
A press working device comprising: a return spring provided between a pressing plate, which is a part of the interlocking mechanism, and the guide support plate. 2. The press working apparatus according to claim 1, wherein the guide support plate is fixed to both side portions of the die plate, and the interlocking mechanism is provided in the backing plate. 3. A die plate fixed on a backing plate, a plurality of lifter pins provided so as to support both sides of a work conveyed on the die plate, and a lifter which can be raised and lowered above the die plate. A punch fixed to the provided punch pad, a stripper provided to be able to move in parallel with the punch, and a work guide device for guiding the work being conveyed to the groove of the lifter pin; The apparatus moves back and forth in a direction perpendicular to the direction of transport of the work, and has a guide groove having a horizontal opening formed in a V-shape on each opposing side, and an escape groove for releasing each of the lifter pins at the time of advance. A pair of work guides provided, a work guide driving cylinder mounted on the press body such that the work guides can be advanced, and the work guides A guide support plate that slidably supports the pair of work guides, a pair of interlocking mechanisms that interlock the pair of work guides in opposite directions, and a pressing plate and the guide support plate that are part of the interlocking mechanisms. A press working apparatus comprising: a return spring provided between each of the first and second sub-rollers; and a sub-roller mechanism for finely adjusting the moving amount of the work, which is provided at a transfer port of the work. 4. The press according to claim 3, wherein the guide support plate and the interlocking mechanism are fixed to both side portions of the backing plate and upstream ends and downstream ends of the workpiece in the transport direction. Processing equipment.