JPH08118093A - Press working device - Google Patents

Abstract

PURPOSE: To improve safety, and to attain an automization in press working. CONSTITUTION: A work guide device G guiding a work W coming in on a die plate 3 to the groove part of a lifter pin 4, is provided on a progressive type press working device. The work guide device is equipped with a pair of work guides 15 moving back and forth in the perpendicular direction to the transfer direction of the work, a cylinder 21 for driving a work guide mounted so that each work guide can be moved ahead, a linking mechanism R linking each guide in the opposite direction each other, and a return spring 22 returning each guide to its original position. When the work W comes in on the die plate 3, the cylinder 21 and the work guide 15 are approached by the linking mechanism R, and both sides of the work are led to the groove part 4b of the lifter pin by a guide groove part 15b. When a punch 11 is ascended and descended, the work guide is retracted for standby. When the work is led by all the lifter pins, the transfer of the work is transferred to an original work feeder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press working apparatus 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 the work made of hoop material into the die, punches the work in multiple steps, and sequentially sends out a predetermined amount of work for each punching process. ing.

The work carried into the die is supported by the groove portions of the lifter pins provided on both sides of the work in a state slightly lifted from the die plate for each work stage in which the punching process is performed a plurality of times. There is. The lifter pins guide the work in the transfer process and prevent the work from being deformed by punching.

As described above, the work transferred into the mold is curved because the one in the hoop state is pulled out, and the correction process is folded during the transfer, but it 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, an operator manually guides the work to the groove of the return pin. When the punch is lifted up and down in this state and the first punching process is performed, the punched tip portion, which is the portion supported by the lifter pins, tends to be deformed upward.
Therefore, for the next punching step, the work is again guided to the groove portion of the next lifter pin, and the second punching is performed by the second punch elevating and lowering. Similarly, an operator guides the work to the groove portion of the lifter pin until punching is finished in the final progressive feed type processing stage.

[0005]

In the above-mentioned conventional example, an operator must put his / her hand in the elevating area of the die every time the work is sent to each processing stage, and furthermore, each processing stage must be operated. Since the punch moves up and down, it is very dangerous and poses a safety problem. In addition, since manual work is required every time the hoop material is renewed, it is difficult to establish a fully automatic press line concept, which is a bottleneck in fully automating the press line.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to eliminate the danger of working in a press working apparatus and to make the press working fully automatic.

[0007]

In order to achieve the above object, the press working apparatus of the present invention is characterized in that a progressive 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 escapes the lifter pins when the guide groove is formed with a V-shaped horizontal opening on each opposing side. A pair of work guides provided with escape grooves, a work guide drive cylinder in 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 that interlocks the work guides in opposite directions, and a return spring that is provided between a pressing plate and a guide support plate that are part of the interlocking mechanism are provided.

In the above-mentioned means, it is desirable 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, the work guide device includes a guide drive cylinder attached to the press body so that each work guide can be advanced, a guide support plate for slidably supporting each work guide, and these. A pair of interlocking mechanisms for interlocking the pair of work guides in opposite directions to each other, a return spring provided between a pressing plate and a guide support plate which are a part of each of these interlocking mechanisms, and a work It is composed of a sub-roller mechanism for finely adjusting the amount of movement of the work, which is 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 transfer direction.

[0012]

When a hoop-shaped work enters the die plate, a pair of work guides provided in the work guide device are moved inward by the work guide drive cylinder, and the work is guided by the guide groove portion of the work guide. It is guided by and becomes horizontal in appearance. At this time, each lifter pin is released by each relief groove provided in the work guide,
When the work guide advances to a predetermined position, the work is guided to the guide groove. When the work continues to enter, both sides are engaged with the groove portions of the lifter pin 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 to perform punching, and the punch is raised again. After that, the work guide advances again to guide the work distorted by punching to the groove of the lifter pin through the guide groove. The works are sequentially fed, and the work guide advances and retracts each time, and is guided to the groove portion of the lifter pin provided at the work entry position. When the work reaches the final punch stage, the work is supported by the grooves of all the lifter pins, and the guide by the work guide is no longer required. After that, the work guide does not operate, and the work is guided and conveyed only by the lifter pin.

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

If the work guide support plates are fixed to both sides of the die plate, it can be easily applied to an existing press machine.

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

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 die holder 1, and a die plate 3 is fixed on it. 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, which are formed as a progressive die.

Holes 2a and 3a are provided in the backing plate 2 and the die plate 3 so as to face each other. The hole 2a is formed to have a diameter larger than that of the hole 3a. The communication part with 3a is a step.

The die plate 3 is provided with two lifter pins 4 in three rows along the moving direction of the work W. Each lifter pin 4 is embedded in holes 2a, 3a provided in the backing plate 2 and the die plate 3, and the shaft portion projects above the die plate 3 and the head 4
a is caught in the step formed by the hole 2a and the hole 3a so as not to come out upward. A compression spring 5 is embedded in each hole 2a of the backing plate 2, and one end of the compression spring 5 is in contact with the head 4a of the lifter pin 4 to urge it upward. In the vicinity of the upper end of the shaft portion of the lifter pin 4, a groove portion 4b for supporting the side portion of the work W is provided.

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

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 have stripper guides 12 and 12 supporting the stripper 11 and stripper springs 13 and 13 interposed therebetween. 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 descends, the work W is pressed against the upper surface of the die plate 3 and when the punch 10 rises after punching is completed. Functions so that the work W cannot be lifted by the punch 10.

The lower die is equipped 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 approaching direction of the work W), and the work guides 15 are supported on the inner sides of the guide support plates 14 and 14 via shafts 15a. ing. Pressing plates 16 and 16 are connected to the other end of each shaft 15a. Each pressing plate 16
Is composed of an elongated plate-like body, and is connected to the shaft portion 15a at its central portion, and a vertical connecting plate 17 constituting an interlocking mechanism R of the work guide 15 is fixed to the lower side of the central portion.

The interlocking mechanism R includes 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 up to the middle of the recess 2b provided on the backing plate 2, and the end of the horizontal connecting plate 18 horizontally provided inside the backing plate 2 is provided at the lower end. It's stuck. The other vertical connecting plate 17 connected on the other side is fixed to the other horizontal connecting plate 18 horizontally provided in the upper surface of the lower die holder 1 and in the recess of the backing plate 2.

The two horizontal connecting plates 18, 18 are provided so as to face each other over a range of about half from the inner end portion, and the rack portions 18a, 18 are provided on the facing surfaces, respectively.
a is engraved. A pinion 19 pivotally supported by the facing wall surface of the recess 2b of the backing plate 2 is provided between the facing surfaces, and the connecting plates 18 can be interlocked with each other in opposite directions. Since the interlocking relationship by the interlocking mechanism R extends to the respective work guides 15 and 15 connected to the interlocking mechanism R, the work guides 15 and 15 are respectively movable in opposite directions.

A work guide driving cylinder 21 is provided on the opposite surface (right side in FIG. 1) of the abutting portion of one pressing plate 16 to the shaft portion 15a. The cylinder 21 is fixed to a cylinder support member 20 fixed to a not-shown press device body. The output rod 21a of the cylinder 21 is
It is in contact with the central portion of the pressing plate 16, and this pressing plate can be pushed out inward of the upper surface of the die plate 3. Shaft 1
A return spring 22, which is a compression coil spring, is wound around 5a, and the guide support plate 14 and the pressing plate 16 are brought into contact with their respective ends to exert a biasing force therebetween. The output rod 21a of the cylinder 21 is driven by this urging force.
The work guides 15 and 15 can be returned to the retracted position when is retracted.

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 the chain double-dashed line L1), the 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 and 1
The pair of work guides 15, 15 move in a direction in which they approach each other to narrow the distance between them, and guide the both sides of the work W to the guide grooves 15b, 15b by the horizontal openings of the V-shaped portions.

When the work W continues to enter, both sides of the work W are guided by the groove portions 4b of the lifter pins 4 located in the escape grooves 15c of the work guide. Subsequently, when the work W reaches the boundary on the opposite side of the first punch stage (indicated by the chain double-dashed line L2), the work W is stopped from entering and the drive rod 21a of the cylinder 21 retracts. As a result, the pressing plates 16 and 16 are returned to their original positions by the return spring 22, and the work guides 15 and 15 are also returned to their original positions in conjunction with each other.

Here, the punch 10 descends and the first punching process is performed on the first punching stage to process 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 bent upward by punching.
When the punch 10 moves up, the work guides 15 and 15
Guides the workpiece W to be sent out and sent out to the groove portion 4b of the lifter pin 4 provided at the next position, and makes it enter to the boundary of the second punch stage (indicated by a chain double-dashed line L3). At this time, the work W is stopped, and at the same time, the work guides 15 and 15 are retracted, and the punch 10 is lowered there to process the bending portion as the second processing portion P2 on the second punch stage. At the same time, the next first processing portion P1 is processed on the first punch stage.

Similarly, when the work W is advanced to the boundary of the third punch stage (shown by the chain double-dashed line L4), the work W is supported by all the lifter pins 4. In this state, the third processed portion P3 is cut, and the processed parts are 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.

In this way, the press working is successively carried out by the progressive feeding of three times. If the work W is supported by all the lifter pins 4 ... In three sequential feeding processes, the subsequent work feeding is performed by the lifter pins 4, so that the guides by the work guides 15, 15 are unnecessary. Therefore, the work guides 15, 15 are made to stand by at the retracted position to prepare for the next work W switching. As a result, the work process for setting the work W by the worker is not required for supplying the work W, so that improvement in work safety and complete automation of press working can be achieved.

In this embodiment, since the work guide driving cylinder 21 is attached to the main body of the press machine, complicated wiring and piping are not applied to the mold, so that the structure is simplified and the mold can be easily replaced. It also contributes to the automation of die replacement. Further, since the interlocking mechanism is provided, only one cylinder need be provided, which is also advantageous in terms of cost.

In this embodiment, the number of progressive feeds is three, but the number of progressive feeds is not limited to three, and may be any number depending on the form of the product to be processed. Next, another embodiment will be described. As shown in FIGS. 4 to 6, since the basic structure of the press device main body is the same as that of the above-described embodiment, the common elements are the numerical values of the reference numerals plus 30 added to the numerical values of the reference numerals. However, overlapping description will be omitted.

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

The interlocking mechanism R has two sets, one set at each end of the backing plate 32. These interlocking mechanisms R are provided at the upstream and downstream ends of the work W in the transport direction and at the front and rear parts of the backing plate 32 via work guide mounting blocks E. The mounting block E has an opening having a U-shaped cross section abutting on the upper surface of the lower die holder 31, and one side thereof is fixed to the front portion and the rear portion of the backing plate 32, respectively. Are work guide support plates 44 and 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 portion faces the work guide support plate 44. . Each pressing plate 46 is a work guide 45.
Is connected to the shaft portion 45a of the work guide 45 and can be interlocked with the work guide 45. Rack portions 46a, 46a are formed on the facing surfaces of the horizontal portions of the pressing plate 46, and each rack portion meshes with a pinion 47 pivotally supported by the work guide mounting block E.

By the pinion 47, both pressing plates 46, 46
Work guides 45, 4 linked to these
5 can be linked in the opposite direction. Work guide 4
The return springs 48 ...
Since the work guide 45 is wound and urges the work guide 45 to the outside, the work guide 45 and the pressing plate 46 can return to the original position when the output rod 51a of the cylinder 51 retracts.

A sub-roller mechanism S for fine adjustment of the work to be fed is provided in front of the guide support plate 44 at the conveyance port for the work W. The sub-roller mechanism S has the following configuration.

A roller support plate 53, which is bent forward in the vicinity of the upper end, is fixed to the front end of the bolster plate 49, and a drive roller 54 is pivotally supported at the tip of this roller support plate. The drive roller 54 can be rotationally driven by a motor 56, and the motor 56 is fixed to a motor mounting plate 55 fixed to the bolster plate 49. The roller shaft 54a and the motor shaft 56a are connected by a coupling 57.

A tension cylinder 59 is attached in the middle of the front surface of the roller support plate 53 via a cylinder fixing plate 58. Further, the cylinder fixing plate 5 is attached to the roller supporting plate 53.
8, a slider shaft 60 is fixed above the sub shaft 8, and a sub roller support plate 62 is slidably attached to the slider shaft 60 via a slider 61 slidably fitted thereto. Sub roller support plate 6
A sub roller 63 is axially supported at the tip of the bent portion of 2. A sensor 64 is fixed to the roller support plate 53, and the sensor 64 can detect the origin position for processing the work 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 lifting range of the upper die, it is possible to perform work safely. At the same time, the work guide driving cylinder 51 moves the work guide 45.
Are moved forward, and they are brought close to each other by the interlocking mechanism R. Each work guide 45 transfers the work W to the lifter pin 34.
When the work guide 45 has reached the guideable position in the groove 34b of ..., The work guide 45 is in a standby state here. At the same time, the sub-roller 63 is raised by the tension cylinder 59, and the work W is sandwiched by the two rollers 54, 63. When the drive roller 54 is rotated by the motor 56 in this state, the work W advances, and both sides of the work W move to a position where they are supported by the guide groove portions of the work guide 45.

When the tip of the workpiece W reaches the preset origin position, the workpiece origin position detection sensor 64 operates to stop the entry of the workpiece W. At the same time when the drive roller 54 stops, the tension roller 59 lowers the sub roller 63, and instead, a work feeder (not shown) provided in the main body of the press machine feeds the work W by one pitch. As a result, the tip of the work W is sent to the tip of the first punch stage. When the tip of the work W has reached this point, both sides of the work W are already provided on the most upstream side of the groove portions 3 of the lifter pins 34, 34.
4b and 34b. Work guide 4 here
5, 45 retreat and the punch 40 moves up and down to punch the first working portion as in the case of the above-described embodiment. Subsequent operations are performed in the same manner as in the above embodiment.

In this embodiment, since the interlocking mechanism R is provided on the outside of the backing plate 32, it can be easily applied to the existing press machine by additional processing,
By adopting the sub-roller mechanism, automation is further promoted, and 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 main body of the press machine, complicated wiring and piping are not applied to the mold, so that the structure is simple and the mold can be easily replaced. , Also contributes to the promotion of automation of die replacement. Further, since the work guide interlocking mechanism is provided, only one cylinder is required, which is also advantageous in terms of cost.

If the interlocking mechanism is provided inside the backing plate, it can be easily applied to the existing general-purpose press device. Furthermore, by providing a sub-roller mechanism, automation can be promoted further, so
Operation for 4 hours is possible.

[Brief description of drawings]

FIG. 1 is a partially cutaway cross-sectional side view of essential parts in an embodiment of the present invention.

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

FIG. 3 is a side view showing a state in which a work is supported by lifter pins provided near a transfer port.

FIG. 4 is a partially cutaway cross-sectional side view in which a sub roller mechanism is omitted 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.

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

[Explanation of symbols]

 2,32 Backing plate 3,33 Die plate 4,34 Lifter pin 4b, 34b Groove part 9,39 Punch pad 10,40 Punch 11,41 Stripper 14,44 Guide support plate 15,45 Work guide 15b, 45b Guide groove part 15c, 45c Escape groove 16,46 Press plate 21,51 Work guide drive cylinder 22,48 Return spring G Work guide device W Work R interlocking mechanism S Sub-roller mechanism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuru Matsuda 4-1-1 Taihei 4-chome, Sumida-ku, Tokyo Inside Seikosha Co., Ltd.

Claims (4)

[Claims] 1. A die plate fixed on a backing plate, a plurality of lifter pins arranged to support both sides of a work conveyed on the die plate, and a liftable member above the die plate. The work guide is provided with a punch fixed to a punch pad provided, a stripper provided so as to be movable in parallel to the punch, and a work guide device for guiding the work being conveyed to the groove portion of the lifter pin. The apparatus is provided with a guide groove portion that advances and retreats in a direction perpendicular to the workpiece conveying direction and has a horizontal opening formed in a V shape on each opposing side, and an escape groove that allows the lifter pins to escape when advancing. A pair of work guides, a work guide drive cylinder to which the above work guides are attached so that they can advance, and the above 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 apparatus comprising a pressing plate which is a part of the interlocking mechanism and a return spring provided between the guide supporting plate. 2. The press working apparatus according to claim 1, wherein the guide support plate is fixed to both sides 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 arranged to support both side portions of a work conveyed on the die plate, and a liftable member above the die plate. The work guide is provided with a punch fixed to a punch pad provided, a stripper provided so as to be movable in parallel to the punch, and a work guide device for guiding the work being conveyed to the groove portion of the lifter pin. The device has a guide groove portion that advances and retreats in a direction perpendicular to the workpiece conveying direction and has a horizontal opening formed in a V shape on each opposing side, and an escape groove that allows the lifter pins to escape when advancing. A pair of work guides provided, a work guide drive cylinder attached to the press body so that each work guide can be advanced, and each work guide A guide support plate that slidably supports each other, a pair of interlocking mechanisms that interlock the pair of work guides in opposite directions, a pressing plate that is a part of each interlocking mechanism, and the guide support plate. A press working apparatus comprising: a return spring provided between each of them; and a sub-roller mechanism for finely adjusting the amount of movement of the work, which is provided at the work transfer port. 4. The press according to claim 3, wherein the guide support plate and the interlocking mechanism are fixed to both sides of the backing plate and an upstream end and a downstream end of the workpiece in the transport direction. Processing equipment.