JP2971013B2 - Upper die device in bending machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper die device provided with an upper die in a bending machine such as a press brake.

[0002]

2. Description of the Related Art A brief description of a conventional upper die apparatus is provided with an upper die holder at a lower end of an upper table in a bending machine, and a rear surface of an upper die at a lower end of the upper die holder. A contact surface is provided for contact. At the lower end of the upper die holder, an upper die clamp is provided by a pair of fixing bolts, and the upper die clamp has a pressing surface for pressing the front side surface of the upper die rearward. Here, the pair of fixing bolts are separated in the left-right direction so as to be located near both right and left ends of the upper mold clamp, respectively.

Therefore, when the upper mold is mounted on the upper mold holder, the fixing bolt is tightened to fix the upper mold clamp while the rear surface of the upper mold is in contact with the contact surface of the upper mold holder. Move backward. Thereby, the front surface of the upper die is pressed rearward by the pressing surface of the upper die clamp, and the upper die can be fixed to the upper die holder.

In order to remove the upper die from the upper die holder, the fixing bolt is loosened and the upper die clamp is moved forward by a small amount. Thus, the pressing state of the pressing surface of the upper die clamp is released, and the upper die can be detached from the upper die holder.

[0005]

By the way, when the front surface of the upper die is pressed by the upper die clamp, a large pressing force tends to partially act on the periphery of the fixing bolt on the pressing surface of the upper die clamp. Because of this, the pressing surface of the clamp is partially deformed when viewed from above, especially when the fixing bolts are located at the left and right ends of the upper clamp. When viewed, the central portion in the left-right direction (lateral direction) is curved so as to be convex with respect to the front side surface of the upper die. For this reason, the pressing force of the pressing surface of the clamp against the upper die becomes insufficient, and the height position of the upper die with respect to the upper die holder cannot be kept the same in the horizontal direction, and the bending accuracy deteriorates. There was a problem. In particular, when the upper die is composed of a plurality of divided upper dies that are adjacent in the horizontal direction, the above problem becomes more remarkable.

[0006]

In order to solve the conventional problems as described above, according to the present invention, as a first means, an upper die holder is provided at a lower end of an upper table in a bending machine. An upper die device in a bending machine in which an upper die is detachably provided on an upper die holder, the upper die holder having a contact surface where one side surface of the upper die abuts on a lower end portion of the upper die holder. An upper mold clamp is provided at a lower end portion by a fixing means, and the upper mold clamp is provided with a pressing surface for pressing the other side of the upper mold in one direction, and one of the pressing surface of the upper mold clamp and the other side of the upper mold is provided. A groove extending in the lateral direction is provided on the surface of the upper mold, and an elastic body which is in direct contact with the pressing surface of the upper mold clamp and the other surface of the other side surface of the upper mold and extends in the lateral direction is provided in the groove, and A part of the elastic body is configured to protrude with respect to any of the above surfaces, and The elastic body is configured to be elastically deformable in response to a lateral bending deformation of the pressing surface of the upper mold clamp when viewed from above when the elastic body is pressed against the other side surface of the upper mold by the pressing surface of the upper mold clamp. It is characterized by.

According to the first means including the upper mold having a plurality of divided upper molds adjacent to each other in the lateral direction and the upper mold extending in the lateral direction, the upper mold is not attached to the upper mold holder. Then, the upper mold clamp is moved in one direction by the fixing means while one side surface of the upper mold is in contact with the contact surface of the upper mold holder. Thereby, the other side surface of the upper die is pressed in one direction by the pressing surface of the upper die clamp, and the upper die can be fixed to the upper die holder. Here, even when the pressing surface of the upper clamp is deformed in a lateral direction when viewed from above, the pressing surface of the upper clamp is partially subjected to a large pressing force in the vicinity of the fixing means on the pressing surface of the upper die. The elastic body is elastically deformed in accordance with the curved deformation of the pressing surface of the upper mold clamp by projecting the elastic body in advance with respect to any one of the surfaces in accordance with the amount of deformation. The upper die can be sufficiently pressed together with the urging force.

Further, when the upper die is to be detached from the upper die holder, the upper die clamp is moved by a small amount in the other direction by the fixing means. As a result, the pressed state by the pressing surface of the upper die clamp is released.

In the second means, an upper die holder is provided at a lower end of an upper table of the bending machine, and an upper die is detachably provided on the upper die holder. The upper die holder has a contact surface with which one side surface of the upper die abuts, and an upper die clamp is provided at a lower end of the upper die holder by fixing means. A pressing surface for pressing the side surface in one direction, the pressing surface of the upper die clamp and the other side surface of the upper die are each formed in a tapered shape, and any one of the pressing surface of the upper die clamp and the other side surface of the upper die is provided. While providing a groove on one side of the
An elastic body is provided in this groove, and a part of the elastic body is configured to protrude with respect to any of the above-described surfaces, and when the other side of the upper mold is pressed in one direction by a pressing surface in the upper mold clamp,
The elastic body is configured to urge the upper die upward from horizontal.

According to the second means, when the upper die is mounted on the upper die holder, the upper die is fixed by the fixing means while one side surface of the upper die is in contact with the contact surface of the upper die holder. Move the mold clamp in one direction. Thereby, the other side surface of the upper die is pressed in one direction by the pressing surface of the upper die clamp, and the upper die can be fixed to the upper die holder. Here, even if the pressing surface of the upper clamp is curved and deformed in the lateral direction when viewed from above, the pressing surface of the upper die is partially subjected to a large pressing force near the fixing means on the pressing surface of the upper die. By previously projecting the elastic body against any of the surfaces in accordance with the amount of deformation, the elastic body is elastically deformed in response to the curved deformation of the pressing surface of the upper mold clamp, The upper die can be sufficiently pressed together with the urging force of the body. Further, the pressing surface of the upper die clamp and the other side surface of the upper die are each configured in a tapered shape, so that after pressing the other side surface of the upper die in one direction by the pressing surface of the upper die clamp, the upper die clamp and the upper die are pressed. In addition to preventing rattling with the mold, the upper mold is securely fixed to the upper mold holder in combination with the fact that the upper mold is urged upward from the horizontal direction by the elastic body. be able to.

When the upper die is to be detached from the upper die holder, the upper die clamp is moved in the other direction by a small amount by the fixing means. As a result, the pressed state by the pressing surface of the upper die clamp is released.

In the third means, in addition to the constituent elements of the second means, when the other side surface of the upper mold is pressed in one direction by a pressing surface of the upper mold clamp, the elastic body is moved. In order to urge the upper mold upward from the horizontal, a pressing surface in the upper mold clamp and an entrance groove into which the protruding portion of the elastic body enters the remaining surface of the other side surface of the upper mold are provided.
It is characterized in that a hook portion on which the protruding portion of the elastic body can be hooked is provided in an upper portion of the entrance groove.

According to the third means, the same action as the action by the second means is exerted.

In the fourth means, in addition to the constituent elements of any one of the first to third means, the upper mold clamp is swung by a small amount in the directions of clamping and unclamping. It is characterized by being configured to be possible.

According to the fourth means, in addition to the action of any one of the first to third means, by swinging the upper mold clamp in the clamp direction, the pressing surface of the upper mold clamp can be used. By pressing the other side of the upper mold in one direction, the upper mold can be fixed to the upper mold holder. In addition, by swinging the upper mold clamp in the unclamping direction, the pressed state of the upper mold clamp by the pressing surface can be released.

In the fifth means, in addition to the constituent elements of the fourth means, in order to swing the upper die clamp in the clamp and unclamping directions, the upper die is provided above the fixing means in the clamp. It is characterized in that an abutment screw abutting on the upper die holder is screwed and provided, and a clamp lever is provided on the abutment screw.

According to the fifth means, an operation similar to the operation of the fourth means is achieved.

In the sixth aspect, in addition to the constituent elements of any one of the first to fifth means, a locking groove extending in the lateral direction is provided on the other side surface of the upper mold, and The pressing surface of the mold clamp is provided with a locking projection that can be locked in the locking groove.

According to the sixth means, in addition to the operation of any one of the first to fifth means, since the locking groove and the locking projection are locked, the pressing of the upper mold clamp is performed. Even when the pressing state by the surface is released, the upper mold does not fall.

In a seventh means, an upper die holder is provided at a lower end of an upper table of the bending machine, and an upper die is detachably provided on the upper die holder. The upper die holder has a contact surface with which one side surface of the upper die abuts, and an upper die clamp is provided at a lower end of the upper die holder by fixing means. A pressing surface for pressing the side surface in one direction is provided, and the upper die clamp is configured to be swingable by a small amount in the clamping and unclamping directions, and the pressing surface in the upper die clamp and the other side surface of the upper die are tapered. Each of which has a groove on the pressing surface of the upper mold clamp, an elastic body is provided in this groove, and a part of the elastic body is configured to protrude with respect to the pressing surface of the upper mold clamp. A laterally extending locking groove is provided on the other side, The pressing surface of the upper die clamp is provided with a locking projection that can be locked in the locking groove, the groove is configured to be adjacent to the locking protrusion, and the other side of the upper die is pressed by the pressing surface of the upper die clamp. When the elastic body urges the upper die upward from the horizontal when pressed in the direction, the protruding portion of the elastic body can enter the locking groove and is pulled to the upper part of the locking groove. It is characterized in that it can be hooked.

According to the seventh means, when the upper mold is mounted on the upper mold holder, the upper mold clamp is held in a state where one side surface of the upper mold is brought into contact with the contact surface of the upper mold holder. Is swung in the unclamping direction, whereby the other side of the upper die is pressed in one direction by the pressing surface of the upper die clamp, and the upper die is fixed to the upper die holder. Here, even when the pressing surface of the upper clamp is deformed laterally when viewed from above, the large pressing force acts locally on the pressing surface of the upper die clamp near the fixing means. By previously projecting the elastic body against the pressing surface of the upper mold clamp in accordance with this amount of deformation, the elastic body is elastically deformed in response to the curved deformation of the pressing surface of the upper mold clamp, The upper die can be sufficiently pressed together with the urging force of the elastic body. Further, the pressing surface of the upper die clamp and the other side surface of the upper die are each configured in a tapered shape, so that after pressing the other side surface of the upper die in one direction by the pressing surface of the upper die clamp, the upper die clamp and the upper die are pressed. In addition to preventing rattling with the mold, the upper mold is securely fixed to the upper mold holder in combination with the fact that the upper mold is urged upward from the horizontal direction by the elastic body. be able to.

When the upper die is to be detached from the upper die holder, the upper die clamp is swung in the unclamping direction to release the pressed state of the upper die clamp by the pressing surface. Here, since the locking groove and the locking projection are locked, the upper mold does not drop even when the pressing state of the pressing surface of the upper mold clamp is released.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, an upper die device 1 in a bending machine according to an embodiment of the present invention has a left-right direction (a front-to-back direction in FIG. 1; It has a plurality of divided upper dies 3 adjacent to each other in the left-right direction, and will be described in detail below.

A wedge member 7 is provided on the lower surface (the lower surface in FIGS. 1 and 2) of the upper table 5 in the bending machine, and the wedge member 7 has an inclined lower surface 7a with respect to the horizontal direction (left-right direction). ing. An intermediate member 9 is provided on the wedge member 7 through a long hole 11 and a mounting bolt 13 so as to be able to adjust the position in the left and right direction. An upper die holder 15 is integrated with the intermediate member 9 via a mounting bolt 17. Provided in the
The upper die holder 15 is provided with the inclined lower surface 7 of the wedge member 7.
a is provided corresponding to a. The upper die holder 15 includes a contact surface 15b with which the upper rear side surface 3a of the plurality of divided upper dies 3 can contact, and a plurality of divided upper dies 3
A bumping surface 15c that can bump against the step surface 3b.

At the lower end of the upper holder 15, an upper clamp 19 is provided via a pair of fixing bolts 21.
The pair of fixing bolts 21 are separated in the left-right direction (lateral direction) so as to be located at the left and right ends of the upper mold clamp 19, respectively. The upper mold clamp 19 has a pressing surface 19a that presses the upper front side surface 3c of the plurality of divided upper dies 3 in the rearward direction (to the right in FIG. 1 and to the rear in FIG. 2). The upper clamp 19 is configured to be able to swing by a small amount in the clamp and unclamping directions (clockwise and counterclockwise in FIG. 1).

In order to swing the upper clamp 19 in the clamping and unclamping directions, a contact screw 23 abutting on the upper holder 15 is screwed onto the upper side of the fixing bolt 21 in the upper clamp 19. At the same time, the contact screw 23 is provided with a clamp lever 25. The upper clamp 19 and the upper holder 1 in each fixing bolt 21 are used.
5, the upper die clamp 19 is moved forward (fixing bolt 21).
A spring 27 is provided which can be urged toward the head side.

Here, the upper mold clamp 19 is fixed to the fixing bolt 2.
In addition to being configured to be able to swing by a small amount with respect to 1, as shown in FIG. 3, the upper mold clamp 19 is configured to be unable to swing with respect to the fixing bolt 21, and only by tightening the fixing bolt 21. The pressing action by the pressing surface 19a of the upper mold clamp 19 may be performed.

The pressing surface 19a of the upper mold clamp 19 is provided with a groove 29 extending in the left-right direction, and this groove 29 is in direct contact with the upper front side surface 3c of the plurality of divided upper dies 3 and in the left-right direction ( An elastic body 31 (for example, a coil spring) extending in the longitudinal direction of the groove 29 is provided.
Is protruded rearward with respect to the pressing surface 19 a of the upper mold clamp 19. Here, the elastic body 3
The size of the opening of the groove 29 is made smaller than the size of the bottom of the groove 29 so that 1 does not come off.

Instead of providing the groove 29 provided with the elastic body 31 on the pressing surface 19a of the clamp 19, a groove provided with the elastic body is provided on the upper front side surface 3c of the plurality of divided upper dies 3.
Part of this elastic body is divided into upper front side surfaces 3c of a plurality of divided upper dies 3.
However, instead of providing the groove 29 extending in the left-right direction (horizontal direction), the groove 29 extending in the up-down direction (vertical direction) may be provided.

In order to prevent the plurality of divided upper dies 3 from dropping when the pressed state by the contact surface 15b of the upper mold holder 15 is released, the upper front side surface 3c of the plurality of divided upper dies 3 is moved in the left-right direction. A locking groove 33 is provided which extends to the bottom surface of the upper clamp 19, and a locking projection 35 which can be locked to the locking groove 29 is provided on the pressing surface 19 a of the upper mold clamp 19.

Referring to FIG. 4 and FIG.
After pressing the upper front side surfaces 3c of the plurality of divided upper dies 3 in the rearward direction by the pressing surface 19a in FIG. 9, the upper mold clamps 19 are provided to prevent the upper clamp 19 and the plurality of divided upper dies 3 from rattling. It is preferable that each of the pressing surface 19a and the upper front side surface 3c of each of the plurality of divided upper dies 3 be tapered. Further, in this case, when the upper front side surface 3c of the upper die 3 is pressed rearward by the pressing surface 19a of the upper die clamp 19, the elastic body 31 pushes the plurality of divided upper die 3 upward from the horizontal. It is configured to be biased. That is, as shown in FIG.
The upper front side surface 3c is provided with an entrance groove 37 into which a protruding portion of the elastic body 31 can enter.
7 is provided with a hook portion 37a on which the protruding portion of the elastic body 31 can be hooked, or the groove 29 is formed adjacent to the locking projection 35 as shown in FIG. It is desirable that the projecting portion of the body 31 be configured to be able to enter the locking groove 33 and to be hooked on the upper portion 33 a of the locking groove 33.

The operation of the invention according to the embodiment of the present invention will be described based on the above configuration.

The plurality of divided upper dies 3 adjacent to each other are placed in the upper die holder 1.
5, the plurality of divided upper dies 3 are brought into contact with the upper die holder 15 so that the locking grooves 33 and the locking projections 35 are locked under a state in which the fixing bolts 21 are tightened. Surface 15a
And the pressing surface 19a of the upper mold clamp 19 from the right (or left) direction. At this time, there is a gap between the step surface 3b of the plurality of divided upper dies 3 and the abutting surface 15c of the upper die holder 15. Next, by lowering the upper table 5 to cooperate the plurality of divided upper dies 3 with the lower die (not shown), the upper die 5 is relatively raised with respect to the upper die holder 15, so that the plurality of divided upper dies 3 The step surface 3b is abutted against the abutting surface 15c of the upper die holder 15.

After the step surface 3b is abutted against the abutting surface 15c, the clamp lever 25 is turned in one direction to rotate the upper die 19 in the clamping direction (counterclockwise in FIG. 1).
To the pressing surface 1 of the upper mold clamp 19.
The upper front side surface 3c of the plurality of divided upper dies 3 can be pressed rearward by 9a to be fixed to the plurality of divided upper dies 3 and the upper die holder 15. Here, a large pressing force acts on the peripheral portion of the fixing bolt 21 on the pressing surface 19 a of the upper die clamp 19, so that the upper die clamp 19 is pressed.
Even if the pressing surface 19a is curved so that the central portion in the left-right direction when viewed from above is curved forwardly with respect to the upper front side surface 3c of the divided upper die 3, the elastic body 31 The elastic body 31 is elastically deformed in accordance with the shape of the pressing surface 19a of the upper die clamp 19 by projecting backward with respect to the pressing surface 19a of the upper die clamp 19 in accordance with the amount of deformation. The biasing force of the elastic body 31 can be sufficiently pressed against any of the divided upper dies 3 in combination with the urging force of the elastic body 31.

Here, as shown in FIGS. 4 and 5, a pressing surface 19a of the upper mold clamp 19 and a plurality of divided upper dies 3 are provided.
When the upper front side surface 3c of each of the plurality of divided upper dies 3 is pressed rearward by the pressing surface 19a of the upper die clamp 19, the upper die clamp It is possible to prevent the backlash between the upper mold 19 and the plurality of divided upper molds 3 and to make the elastic body 31
Urges the plurality of divided upper dies 3 upward from the horizontal so that the plurality of divided upper dies 3 are moved upward.
5 can be securely fixed.

After the upper front side surface 3c of the plurality of divided upper dies 3 is pressed by the pressing surface 19a of the upper mold clamp 19, the plurality of divided upper dies 3 and the lower die are cooperated to form a plurality of divided upper dies. No. 3 stepped surface 3b against butting surface 15b of upper mold holder 15
You can also hit it. In addition, by adjusting the position of the intermediate member 9 in the left-right direction with respect to the wedge member 7 in advance, the height positions of the plurality of divided upper dies 3 with respect to the upper table 5 can be adjusted.

In order to release a plurality of divided upper dies 3 from the upper die holder 15, the clamp lever 2
5 is rotated in the other direction to swing the upper clamp 19 in the unclamping direction (clockwise in FIG. 1), thereby releasing the pressing state of the upper clamp 19 by the pressing surface 19a. Here, since the locking groove 33 and the locking protrusion 35 are locked, even if the pressing state of the pressing surface 19a of the upper mold clamp 19 is released, the plurality of divided upper dies 3 do not drop.

According to the invention according to the embodiment of the present invention as described above, when the upper front side surface 3c of the plurality of divided upper dies 3 adjacent in the left-right direction is pressed by the pressing surface 19a of the upper die clamp 19, When the pressing surface 19a of the upper mold clamp 19 is viewed from above, the elastic body 31 is kept in the upper mold clamp even when the central portion in the left-right direction is curved so as to project forward with respect to the upper front side surface 3c. Since the elastic body 31 is elastically deformed corresponding to the pressing surface 19a, the elastic body 31 can be sufficiently pressed against any of the divided upper dies 3 together with the elasticity of the elastic body 31. Therefore, the height positions of the plurality of divided upper dies 3 with respect to the upper die holder 15 can be kept the same in the left-right direction, and the bending accuracy can be improved.

Even if the pressing state of the pressing surface 19a of the upper mold clamp 19 is released, the locking projections 35 remain in the locking grooves 33.
, The plurality of divided upper dies 3 do not fall, and safety of work can be achieved.

As shown in FIGS. 4 and 5, the upper mold clamp 1
In the case where the pressing surface 19a and the upper front side surfaces 3c of the plurality of divided upper dies 3 are formed in a tapered shape, the rattle between the upper clamp 19 and the plurality of divided upper dies 3 is prevented. In addition, since the plurality of divided upper dies 3 can be securely fixed to the upper die holder 15 together with the upward biasing force of the elastic body 31, the bending accuracy can be further improved.

As described above, the present invention is not limited to the description of the embodiment of the present invention. For example, instead of using a plurality of divided upper dies 3 adjacent in the left-right direction, an upper die extending in the left-right direction is used. No problem. Also, the upper clamp 19
Pressing surface 19a, upper front side surface 3c of the plurality of divided upper molds 3,
Two or all of the contact surfaces 15b of the upper die holder 15 may be provided with grooves provided with an elastic body.

[0042]

According to the first aspect of the present invention, when the other side of the upper die is pressed by the pressing surface of the upper die clamp,
When viewed from above, even if the pressing surface of the upper mold clamp is deformed in the lateral direction, the elastic body is elastically deformed in accordance with the curved deformation of the pressing surface of the upper mold clamp. The upper die can be sufficiently pressed together with the power. Therefore, the height position of the upper die with respect to the upper die holder can be kept the same in the lateral direction, and the bending accuracy can be improved.

According to the second aspect of the present invention, when the pressing surface of the upper mold clamp presses the other side surface of the upper mold, the pressing surface of the upper mold clamp bends laterally when viewed from above. Even in this case, since the elastic body is elastically deformed according to the shape of the pressing surface of the upper mold clamp, the upper mold can be sufficiently pressed together with the urging force of the elastic body. Therefore, the height position of the upper die with respect to the upper die holder can be kept the same in the lateral direction, and the bending accuracy can be improved. In particular, since the upper mold clamp is prevented from rattling with the upper mold and the upper body is securely fixed to the upper mold holder with the upward biasing force of the elastic body, the bending accuracy is improved. Can be further improved.

According to the invention of claim 3, according to claim 2,
Has the same effects as the effects of the invention described in (1).

According to the invention set forth in claim 4 or claim 5, the same effect as the invention described in any one of claims 1 to 3 can be obtained.

According to the invention of claim 6, according to claim 1,
In addition to the same effect as the invention described in any one of claims 5 to 5, the locking projection is locked in the locking groove even when the pressing state of the upper mold clamp by the pressing surface is released. As a result, the work safety can be improved without the upper mold falling.

According to the seventh aspect of the present invention, when the other side of the upper mold is pressed by the pressing surface of the upper mold clamp, the pressing surface of the upper mold is bent and deformed in the lateral direction when viewed from above. Even in this case, since the elastic body is elastically deformed in response to the curved deformation of the pressing surface of the upper mold clamp, the upper mold can be sufficiently pressed together with the urging force of the elastic body.
Therefore, the height position of the upper die with respect to the upper die holder can be kept the same in the lateral direction, and the bending accuracy can be improved. In particular, it is possible to prevent rattling between the upper die clamp and the upper die, and to reliably fix the upper die to the upper die holder in combination with the upward biasing force of the elastic body. Can be further improved.

Even when the pressing state of the pressing surface of the upper mold clamp is released, since the locking projections are locked in the locking grooves, the safety of the work can be improved without the upper mold falling. it can.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an upper die device according to an embodiment of the present invention.

FIG. 2 is a front view of the upper die device according to the embodiment of the present invention.

FIG. 3 is a view showing another embodiment of the upper die device.

FIG. 4 is a view showing a mode in which a pressing surface in an upper mold clamp and upper front side surfaces of a plurality of divided upper molds are formed in a tapered shape.

FIG. 5 is a view showing a mode in which a pressing surface and upper front side surfaces of a plurality of divided upper dies in the upper die clamp are formed in a tapered shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper die apparatus 3 Split upper die 5 Upper table 15 Upper die holder 19 Upper die clamp 21 Fixing bolt 29 Groove 31 Elastic body 33 Locking groove 35 Locking projection

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshio Imamura 806 Takamori, Isehara-shi, Kanagawa Inside Amada Metrex Co., Ltd. (56) References JP-A-2-137719 (JP, A) JP-A-8-57542 (JP, A) JP-A-9-99321 (JP, A) JP-B-7-90282 (JP, B2) JP-B-4-3686 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶⁾ , DB name) B21D 5/02 B21D 37/14

Claims (7)

(57) [Claims] 1. An upper die device for a bending machine, wherein an upper die holder is provided at a lower end portion of an upper table of the bending machine, and an upper die is detachably provided on the upper die holder. A lower surface of the upper die has an abutment surface with which one side surface abuts, and an upper die clamp is provided at a lower end of the upper die holder by a fixing means, and the other side surface of the upper die is pressed against the upper die clamp in one direction. A groove extending in the lateral direction is provided on one of the pressing surface of the upper die and the other surface of the upper die, and the pressing surface of the upper die and the other surface of the upper die are provided in this groove. And a laterally extending elastic body is provided in direct contact with the remaining surface of the elastic member, and a part of the elastic body is configured to protrude with respect to any of the above-mentioned surfaces. Of the upper mold clamp when viewed from above when pressing against the other side of the upper mold with the pressing surface of Upper mold apparatus in a fold machine corresponding to the curvature deformation in the lateral direction, characterized by comprising elastically deformable structure of surfaces. 2. An upper die device for a bending machine, wherein an upper die holder is provided at a lower end portion of an upper table of the bending machine, and the upper die is detachably provided on the upper die holder. A lower surface of the upper die has an abutment surface with which one side surface abuts, and an upper die clamp is provided at a lower end of the upper die holder by a fixing means, and the other side surface of the upper die is pressed against the upper die clamp in one direction. A pressing surface, wherein the pressing surface of the upper die clamp and the other side surface of the upper die are tapered, and a groove is formed on one of the pressing surface of the upper die clamp and the other side surface of the upper die. And an elastic body is provided in this groove, and a part of the elastic body is configured to protrude from any one of the above-described surfaces, and the other side surface of the upper mold is pressed in one direction by a pressing surface of the upper mold clamp. Sometimes, the elastic body moves the upper die upward from horizontal. Upper mold apparatus in a fold machine characterized by comprising configured to energize. 3. When the pressing surface of the upper mold clamp presses the other side surface of the upper mold in one direction, the elastic body urges the upper mold upward from horizontal. On the remaining surface of the pressing surface and the other side surface of the upper die, there is provided an entry groove into which the protruding portion of the elastic body enters, and a hook portion on which the protruding portion of the elastic body can be hooked is provided above the entering groove. The upper die device in the bending machine according to claim 2, wherein the upper die device is provided. 4. The apparatus according to claim 1, wherein the upper mold clamp is configured to be able to swing by a small amount in the clamp and unclamping directions. Upper die device in a folding machine. 5. In order to swing the upper mold clamp in the clamp and unclamping directions, a contact screw abutting on the upper mold holder is provided above the fixing means of the upper mold clamp. The upper die device in a bending machine according to claim 4, wherein a clamp lever is provided on the contact screw. 6. A locking groove extending in the lateral direction is provided on the other side surface of the upper mold, and a locking projection which can be locked in the locking groove is provided on a pressing surface of the upper mold clamp. Claim 4
An upper die device in the bending machine according to claim 5. 7. An upper die device in a bending machine, wherein an upper die holder is provided at a lower end portion of an upper table in the bending machine, and the upper die is detachably provided on the upper die holder. A lower surface of the upper die has an abutment surface with which one side surface abuts, and an upper die clamp is provided at a lower end of the upper die holder by a fixing means, and the other side surface of the upper die is pressed against the upper die clamp in one direction. A pressing surface, wherein the upper die clamp is configured to be swingable by a small amount in the clamp and unclamping directions, and the pressing surface in the upper die clamp and the other side surface of the upper die are each configured in a tapered shape; A groove is provided in the pressing surface of the mold clamp, and an elastic body is provided in the groove, and a part of the elastic body is configured to protrude from the pressing surface of the upper mold clamp, and extends laterally on the other side surface of the upper mold. With a locking groove for the upper clamp. The pressing surface is provided with a locking protrusion that can be locked in the locking groove, the groove is configured to be adjacent to the locking protrusion, and the other side surface of the upper die is pressed in one direction by the pressing surface of the upper die clamp. Sometimes, in order for the elastic body to urge the upper mold upward from the horizontal, a projecting portion of the elastic body can enter the locking groove and can be hooked on an upper portion of the locking groove. An upper die device for a bending machine, comprising: