JPH08224618A - Counter type solo tool changing method in bending machine, device therefor and thrust receiving device of lower die - Google Patents

Abstract

PURPOSE: To bend a work in an L shape or U shape and to prevent the position of a lower die from displacing by freely and properly assembling a shoulder piece formed with multi kind of width inside a shoulder piece cassette and a spacer divided into plural numbers, and exchanging the shoulder and the spacer. CONSTITUTION: In a case of changing a shoulder piece cassette 23, a handle 31 is gripped and it is turned clockwise, a locking hole 33 installed at a plate 29 is released by pushing a pin 35, and the shoulder piece cassette 23 being locked with the plate 29 is pulled out to the lateral direction. Then, the shoulder piece cassette 23 is exchanged in one operation. In the shoulder piece cassette 23 after exchanging, when returning the plate 29 to the original position, the pin 35 is fit into the stopper hole 33, the plate 29 is locked, and the shoulder piece cassette 23 is prevented from moving laterally.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for replacing a counter type solo tool in a bending machine, and a thrust receiving apparatus for a lower die.

[0002]

2. Description of the Related Art Conventionally, there are many types in which a work is V-bent by using a split mold in a plate processing machine, and it is general that a split mold is not used for performing L-bending or U-bending on a work. It was

[0003]

By the way, if L bending or U bending is performed by the above-described conventional plate processing machine, a punch with a thrust receiving plate, a counter holder, a counter spring, a shoulder piece, a die, etc. are required,
Since the structure is complicated, it is difficult to make it steplessly divided and at the same time there is no merit.

The object of the present invention is to facilitate the replacement of the shoulder pieces and to make the shoulder pieces a cassette type so that a cassette can be prepared for each bending length of the product and easily replaced to perform L bending and U bending of the work. Another object of the present invention is to provide a method of exchanging a counter type solo tool in a bending machine which prevents the lower mold from being displaced in position due to a thrust force, and an apparatus therefor and a thrust receiving device for the lower mold.

[0005]

In order to achieve the above object, a method of replacing a counter type solo tool in a bending machine of the present invention according to claim 1 is provided in a lower die holder that supports a lower die. It is characterized in that a shoulder piece formed in various widths in the shoulder piece cassette and a spacer divided into a plurality of pieces can be freely combined, and the shoulder piece and the spacer are pulled out from the shoulder piece cassette and replaced. is there.

According to a second aspect of the present invention, there is provided a method for replacing a counter type solo tool in a bending machine according to the present invention, wherein a lower die for fixing left and right ends of a shoulder piece cassette provided in a lower die holder for supporting a lower die. The holding member provided on the holder is released, and the shoulder piece cassette is pulled out to the left and right sides of the lower mold holder for replacement.

Further, the counter type solo tool exchanging device in the folding machine of the present invention according to claim 3 is the lower die of the upper die and the lower die which are provided to face each other in the folding machine. A shoulder piece cassette is mounted on a lower die holder that supports a die, and a shoulder clamper that can hold or separate the shoulder pieces set according to various processing shapes and the divided spacers in the shoulder piece cassette is used as a shoulder clamper. It is characterized by being provided in a piece cassette.

Still further, according to a fourth aspect of the present invention, there is provided a counter type solo tool exchanging device for a bending machine according to the present invention.
In the folding machine, the upper and lower parts of the upper and lower molds, which hold the shoulder piece cassette with shoulder pieces on both sides of the lower die holder that supports the lower die, can be held or separated. It is characterized in that a member is provided.

Furthermore, the thrust receiving device of the lower die in the bending machine of the present invention according to claim 5 is the lower die of the upper die, which is provided to face the upper and lower sides of the bending machine. A vertically movable wedge body is provided on one side of the lower die holder that supports the die, and a thrust receiving member that presses the movement of the wedge body in the front-rear direction is provided so as to hang from the upper die holder that supports the upper die. A wedge holder for guiding the wedge body is provided, and a key extending vertically is provided at a central portion of the wedge body for preventing lateral shake of the wedge body.

[0010]

With the method and device for exchanging the counter type solo tool in the bending machine according to the above claims 1, 2, 3 and 4, the shoulder piece cassette mounted on the lower die holder is provided with: Bending the shoulder pieces having various widths and the spacer divided into a plurality of parts,
Insert and mount in a combination suitable for U-bending. In addition,
If the processed shape is different, pull out the shoulder piece and spacer from the shoulder piece cassette and replace them.

Further, a shoulder piece cassette in which the position of the shoulder piece is set for each bending length of the product is prepared, and the pressing member provided in the lower die holder for mounting and fixing the shoulder piece cassette is released to release the shoulder. Pull out the piece cassette and replace it. Thus, the replacement can be done with one touch.

Further, by using the thrust receiver of the lower die in the bending machine according to the fifth aspect, a vertically movable wedge body is provided on one side of the lower die holder that supports the lower die. The thrust receiving member hung from the upper die holder suppresses the movement in the front-back direction. Further, since the wedge body is narrowly guided by the key, lateral deflection of the wedge body is prevented.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. The bending machine is a bending machine that bends a slit-worked work by cooperation of a punch and a die.

Referring to FIGS. 1 and 2, in a frame (not shown) which is a member constituting the bending machine 1, in a Z-axis direction (a left-right direction in FIG. 1, a direction orthogonal to the drawing in FIG. 2). Z movable by screw member (not shown)
A shaft carriage (not shown) is provided. And
The Z-axis carriage is provided with a Y-axis carriage 3 movable in the Y-axis direction (vertical direction in FIGS. 1 and 2).

The Y-axis carriage 3 is provided with an upper die 5 and a lower die 7, respectively. More specifically, the upper die holder 9 is attached to the lower portion of the Y-axis carriage 3 provided above, and the spring 11 is installed in the upper die holder 9.
The upper mold 5 is mounted by being urged in the Y-axis direction (downward).

On the other hand, a holder base 13 is provided above the Y-axis carriage 3 provided below.
A lower die holder 15 is provided on the upper part 3. Further, the lower die 7 is provided with the through bolt 17 on the lower die holder 15.
And is always urged in the Y-axis direction (upward) by the urging force of the spring 19.

A shoulder piece cassette 23 having a shoulder piece 21 is mounted on one side (right side in FIG. 1) of the lower die holder 15, and a holding member 25 for holding the shoulder piece cassette 23 is provided on both sides. .
A plate 29 is rotatably attached to a fulcrum bolt 27 serving as a fulcrum of the pressing member 25, and a handle 31 and a locking hole 33 are provided on the plate 29. As a locking member that can be inserted into and removed from the locking hole 33, for example, a pin 35 is urged in a protruding direction by a spring (not shown) having a built-in pin.
The plate 29 is positioned by and prevents the shoulder piece cassette 23 from moving laterally. Note that reference numeral 3
Reference numeral 7 is a block containing a locking member.

With the above structure, when the shoulder piece cassette 23 is replaced, when the handle 31 is grasped and rotated in the clockwise direction indicated by the arrow in FIG.
The locking hole 33 provided at the position is released by pushing the pin 35, and the shoulder piece cassette 23 stopped by the plate 29 can be pulled out in the lateral direction. Thus, the shoulder piece cassette 23 can be replaced with one touch.

In the shoulder piece cassette 23 after replacement, when the plate 29 is returned to the old position, the pin 35 is inserted into the locking hole 33.
And the plate 29 is stopped and the lateral movement of the shoulder piece cassette 23 is prevented.

The shoulder piece cassette 23 will be described in more detail.

Referring to FIGS. 3, 4 and 5, the shoulder piece cassette 23 is mounted on the lower mold holder 15 as shown in FIG. 4 and serves as a locking member 39 provided on the lower mold holder 15. For example, the ball is biased by a spring in the protruding direction. A ball serving as the locking member 39 can be fitted into or removed from a locking hole 43 formed in the cassette body 41 of the shoulder piece cassette 23.

The shoulder piece cassette 23 includes a plurality of shoulder pieces 21 and a spacer 45 appropriately divided.
Are combined according to the bending length of the product, inserted into the cassette body 41, and the piece clampers 47 provided on both sides are fixed by tightening with the fastening bolts 49.

With the above construction, when the bending length of the product is different, the fastening bolt 49 is loosened and the piece clamper 47 is loosened.
By opening, the shoulder piece 21 and the spacer 45 can be easily taken out, and the shoulder piece 21 and the spacer 45 suitable for the bending length of the product can be newly inserted and combined. Alternatively, since the position of the shoulder piece 21 is determined for each product, it is possible to prepare the shoulder piece cassette 23 in which the shoulder piece 21 is positioned by the number corresponding to the bending length of the product and replace it with one touch. it can.

Next, the shoulder piece 21 and the spacer 45
An example of the combination with the above will be described in detail with reference to FIG.

FIG. 6A shows a structure in which the shoulder piece 21A is positioned in the center and spacers 45A are provided on both sides of the shoulder piece 21A to position the shoulder piece 21A.

In FIG. 6 (b), the shoulder piece 21B has a wide width, and the shoulder piece 21B located at the center is shown.
With spacers 45B on both sides of shoulder piece 21B
Is positioned.

In FIG. 6C, the shoulder pieces 21A are provided by being distributed from two centers.
Spacer 45C is sandwiched between 1A, shoulder piece 21
The spacers 45D are provided on both sides of A and positioned.

FIG. 6D shows the shoulder pieces 21A with a larger distance than that of FIG. 6C. Spacers 45B are sandwiched between the shoulder pieces 21A, and spacers 45C are provided on both sides of the shoulder pieces 21A. It is provided and positioned.

FIG. 6E shows the shoulder pieces 21A with a larger gap than that shown in FIG. 6D. Spacers 45E are sandwiched between the shoulder pieces 21A, and spacers 45F are provided on both sides of the shoulder pieces 21A. Is provided and positioned.

FIG. 6 (f) shows the shoulder pieces 21A with the maximum spacing, and the spacers 45G are sandwiched between the shoulder pieces 21A.

By combining the shoulder piece 21 and the spacer 45 as described above, a number of products are bent into a single plate such as L ₁ , L ₂ and L ₃ as shown in FIG. It is effective when doing, and can cope with both types of bending (a) and (b) shown in FIG.

FIG. 7 shows another embodiment of the combination of the shoulder piece 21 and the spacer 45. In this embodiment, the spacer 45 is not provided between the shoulder pieces 21, and the bending length is different. Where there is a joint, it can be bent.

That is, FIG. 7A shows a structure in which the shoulder piece 21A having a narrow width is positioned in the center, spacers 45A and 45B are provided on both sides of the shoulder piece 21A, and the shoulder piece 21A is positioned.

In FIG. 7B, the shoulder piece 21B has a wide width, and the shoulder piece 21B is located at the center.
Spacers 45B and 45C are provided on both sides of the shoulder piece 21B for positioning.

FIG. 7C shows a shoulder piece 21C having a width wider than that of the shoulder piece 21B shown in FIG. 7B. Spacers 45B are provided on both sides of the shoulder piece 21C. This is a configuration in which the piece 21C is positioned.

FIG. 7D shows a structure in which the shoulder pieces 21A and 21C are combined and spacers 45A are provided on both sides thereof to position the shoulder pieces 21A and 21C.

FIG. 7 (e) shows a structure in which the shoulder pieces 21B and 21C are combined and spacers 45C are provided on both sides thereof to position the shoulder pieces 21B and 21C.

FIG. 7 (f) shows a structure in which the shoulder pieces 21A, 21B and 21C are combined.

The combination of the shoulder piece 21 and the spacer 45 as described above is effective, for example, when bending a large number of products into a single plate as shown in FIG. However, the type (a) bending shown in FIG. 8 cannot be performed.

Referring again to FIGS. 1 and 2, the thrust receiving device 51 for preventing lateral movement of the lower die holder 15 that supports the lower die 7 is provided on one side surface of the lower die holder 15 (see FIG. 1). Sloped to the right).
3 are formed. A key groove 55 is formed at the center of the inclined surface 53 so as to extend vertically. A wedge body 57 is slidably provided on the inclined surface 53, and a key 59 provided at the center of the wedge body 57 is fitted into the key groove 55 and serves as a guide. Further, both sides of the wedge body 57 are guided by the wedge holder 61.

A connecting portion 63 is formed on the lower portion of the wedge body 57 so as to project therefrom, and a block 67 is provided on the connecting portion 63 via a pin 65. The block 67 is attached to the lower die holder 15 by a fastening bolt 69. Fixed bracket 7
It is fitted in the sliding hole 73 formed in No. 1 and is movable in the vertical direction. The block 67 is connected to a position adjusting bolt 75 penetrating the bracket 71 via a pin 97, and the bottom portion 73a of the sliding hole 73 is connected to the block 67.
A spring 79 is mounted between the lower surface of the block 67 and the lower surface of the block 67, and the block 67 is always urged upward by the volatility of the spring 79.

On the other hand, an upper die holder 9 for supporting the upper die 5
A thrust receiving member 81 is fixed to one surface of the No. 3 by a fastening bolt 83 and is provided so as to hang down. A plurality of rollers 85 contacting the surface of the wedge body 57 are rotatably mounted on a shaft 87 below the thrust receiving member 81. The shaft 87 penetrates the thrust receiving member 81 in the horizontal direction, and It is fixed to the thrust receiving member 81.

With the above-mentioned structure, the wedge body 57 is fixed to the wedge holder 61.
The upper and lower guides are provided by means of the key 59 to provide a narrow guide system. Therefore, when the width of the wedge body 57 is wide, the guiding accuracy of the wedge body 57 is improved and the displacement of the lower die holder 15 supporting the lower die 7 in the thrust direction can be prevented.

9 and 10 show another embodiment. The difference between this embodiment and the above-mentioned embodiment is that the width of the wedge body is narrow. Therefore, since the constituent members are completely the same, only the different parts will be described and the same members will be denoted by the same reference numerals and detailed description thereof will be omitted.

That is, the width of the wedge body 91 used in this embodiment is narrower than the width of the wedge body 57 used in the above-mentioned embodiment, and the lower die holder 15 for supporting the lower die 7 is used.
The thrust receiving device 51 for preventing the lateral movement of the lower mold holder 15 is provided with an inclined surface 53 that is inclined upward on one side surface of the lower mold holder 15.
Are formed. A wedge body 91 is slidably provided on the inclined surface 53, and the flange portions 91a formed on both sides of the wedge body 91 are attached to each other.
1 is fitted in a groove portion 93a formed in a wedge holder 93 provided on both sides, and a bottom portion 93b of the groove portion 93a.
The wedge body 91 is guided in the up-down direction and the left-right direction by and. The means for urging the wedge body 91 in the upward direction is composed of the same member as that of the above-mentioned embodiment, and therefore its explanation is omitted.

On the other hand, an upper die holder 9 for supporting the upper die 5
A thrust receiving member 95 is fixed to one surface of the No. 2 by a fastening bolt 83 and is provided so as to hang down. A plurality of rollers 85 contacting the surface of the wedge body 91 are rotatably mounted on a shaft 97 of the thrust receiving member 95. The shaft 97 penetrates the thrust receiving member 95 in the horizontal direction, and a thrust bolt 89 is provided to the thrust receiving member. It is fixed to 95.

With the above-mentioned structure, the wedge body 91 becomes the wedge holder 93.
Thus, the guiding accuracy of the wedge body 91 is improved by being guided in the vertical direction and the lateral direction, and the displacement of the lower holder 15 supporting the lower mold 7 in the thrust direction can be prevented.

In FIGS. 11 and 12, the work W is cooperated with the upper die 5 and the lower die 7 used in the above-described embodiment.
It shows the effect of processing on and the product shape.

That is, the upper mold 5 and the lower mold 7 are formed with the ears 5a and 7a and the notches 5b and 7b.
Are formed. This makes it possible to make a bent product as shown in FIG.

With the configuration and operation as described above, the shoulder piece 21 and the spacer 45 can be easily replaced, and the shoulder piece cassette 23 in which the shoulder piece 21 and the spacer 45 are integrated can be replaced with one touch. Further, the thrust receiving device 51 can prevent the lower die holder 15 that supports the lower die 7 from moving in the thrust direction.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0052]

As can be understood from the above description of the embodiments, according to the present invention according to claims 1, 2, 3 and 4, the lower die holder is mounted according to the shape to be bent on the work. A variety of shoulder pieces and a plurality of divided spacers are mounted in an appropriate combination in the shoulder piece cassette.

If the bending shape changes, the shoulder pieces and the spacers can be taken out from the shoulder piece cassette and replaced, so that it can be dealt with again.

The shoulder piece cassette is fixed by a pressing member provided on the lower die holder. For this reason,
The shoulder piece cassette can be easily taken out by releasing the holding member, and the shoulder piece cassette in which the position of the shoulder piece is set for each bending length of the product can be replaced with one touch by preparing it. it can.

Further, according to the present invention according to claim 5, a vertically movable wedge body is provided on one side of the lower die holder, and a narrow guide system by a key for preventing lateral shake when the wedge body is moved is used. The thrust receiving member hanging from the upper die holder can press the movement in the thrust direction to prevent the thrust and lateral shake of the wedge body.

[Brief description of drawings]

FIG. 1 shows the main part of the present invention, and is the same as FIG.
FIG. 4 is a cross-sectional view of the cassette type solo tool taken along the line.

FIG. 2 is a front view seen from the right side in FIG.

FIG. 3 is a sectional view of a shoulder piece cassette of the present invention.

FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective explanatory view of a shoulder piece cassette.

FIG. 6 is an explanatory view showing a combination of a shoulder piece and a spacer.

FIG. 7 is an explanatory view showing a combination of a shoulder piece and a spacer.

FIG. 8 is an explanatory diagram of an example in which a work is bent.

9 shows another embodiment of the present invention, which is shown in FIG.
FIG. 9 is a sectional view of the cassette type solo tool taken along line IX-IX.

FIG. 10 is a front view seen from the right side in FIG.

FIG. 11 is an explanatory view showing a state where the work is bent by the upper and lower molds.

FIG. 12 is a perspective view showing an example of a bent product.

[Explanation of symbols]

 1 Bending machine 5 Upper mold 7 Lower mold 9 Upper mold holder 15 Lower mold holder 21 Shoulder piece 23 Shoulder piece cassette 25 Holding member 45 Spacer 47 Piece clamper 51 Thrust receiving device 57,91 Wedge body 59 Key 61,93 Wedge holder 81,95 Thrust receiving member W work

Claims (5)

[Claims] 1. A shoulder piece cassette provided in a lower die holder for supporting a lower die, wherein a shoulder piece formed with various widths and a spacer divided into a plurality of pieces can be freely combined, and the shoulder piece is provided. And a spacer are pulled out from the shoulder piece cassette and replaced, and a method of replacing a counter type solo tool in a bending machine. 2. A shoulder piece cassette to the left and right sides of the lower die holder by releasing a holding member provided on the lower die holder for fixing the left and right ends of the shoulder piece cassette provided on the lower die holder supporting the lower die. A method for replacing a counter type solo tool in a bending machine, which is characterized by pulling out and replacing. 3. A bending machine, wherein a shoulder die cassette is attached to a lower die holder that supports the lower die of the upper die and the lower die, which are provided to face each other in the upper and lower sides, and the shoulder piece cassette is mounted in the shoulder piece cassette. A shoulder type solo tool of a bending machine, characterized in that a shoulder clamp set with a shoulder piece set according to various processing shapes and a divided spacer are provided in a shoulder piece cassette that can be held or released. Exchange device. 4. A bending machine, which holds a shoulder piece cassette having shoulder pieces on both sides of a lower die holder for supporting the lower die among the upper die and the lower die, which are provided to face each other. Alternatively, a counter type solo tool replacement device in a bending machine, characterized in that a pressing member that can be separated is provided. 5. In a bending machine, a vertically movable wedge body is provided on one side of a lower die holder that supports the lower die of the upper die and the lower die that are provided to face each other. A thrust receiving member for pressing the body in the front-rear direction is provided so as to hang from an upper die holder that supports the upper die, a wedge holder that guides the wedge body is provided, and a wedge body is provided to prevent lateral deflection of the wedge body. A thrust receiving device for a lower die in a bending machine, characterized in that a key is provided to extend in the vertical direction at the central part of the.