JPS62263824A - Bending die apparatus - Google Patents

Abstract

PURPOSE:To facilitate detaching a work by arranging an energized knockout pin on the parts of dies capable of approaching and separating mutually and by moving and abutting it on a bent part of a work at the time of approaching the parts of the dies mutually. CONSTITUTION:With respect to the fixed part 15 of the dies on a bed 6, the movable part 16 of the dies capable of approaching and separating is provided to form respective hollow parts 17, 18 on the die parts 15, 16 and the energized knockout pin 31, 35 are disposed. The work W is set on the die parts 15, 16. At the time when an elevating body 10 is descended, bending parts 4, 5 are formed by driving mechanisms of punches 13, 14. Then, at the time of ascending the elevating body 10, the die 16 is approached to the die 15, the knockout pins 31, 35 are respectively abutted on the bending parts 4, 5 to press. Therefore, the work W after the bending work is easily detached.

Description

Detailed Description of the Invention A1 Object of the Invention (1) Industrial Application Field The present invention provides a method for positioning and mounting a workpiece having an upper plate portion and a side plate portion bent downward from the edge of the upper plate portion. A die consisting of a plurality of die parts that can approach and move away from each other; when the die parts are in a state of being separated from each other, the die part moves toward the die part side and bends inwardly. The present invention relates to a bending die device comprising: a bending punch for forming a lower end of the side plate of the workpiece;

(2) Conventional technology Conventionally, in such a bending mold device, in order to prevent the bent part from getting caught on the die part after the bending process and become difficult to remove, the die parts are moved close to each other after the bending process is completed. so that the part can be removed from the die part.

(3) Problems to be Solved by the Invention However, with the above-mentioned conventional techniques, it is difficult to reliably remove the bent part from the die part, and an operator may have to remove it manually, or the workpiece may have to be removed manually. There was a problem that the take-out position was unstable, which hindered automatic unloading.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a bending die device that solves the above problem by ensuring that the workpiece is removed from the die after the bending process is completed.

B0 Structure of the Invention (1) Means for Solving the Problems According to the present invention, the knockout pin whose one end is capable of abutting against the tip of the bent portion and which is biased toward the other end is arranged so that the die parts are mutually connected to each other. It is arranged in the die part so that it moves toward one end side when it approaches.

(2) Effect According to the above configuration, when the die portion moves close to each other after the die portion and the bend punch work together to form a bent portion, the knockout pin moves toward one end of the die portion and comes into contact with the bent portion. The bent portion is pushed by the knockout pin and separated from the die portion.

(3) Example Below, an example of the present invention will be explained with reference to the drawings. First, in FIG. 1, the workpiece W is formed by processing and forming a thin steel plate in advance, and has an upper plate curved upward in a convex manner. A side plate part 2 is bent downward from one edge of the upper plate part 1, and a side plate part 3 is bent downward from the other edge of the upper plate part l. Both side plate portions 2 and 3 of this workpiece W are subjected to bending by the mold apparatus of the present invention. That is, the lower ends of both side plate parts 2 and 3 are formed with bent parts 4.degree. 5 which are bent inward.

This mold device includes a diamond provided on a fixed base 6, a bend punch 8.9 for performing bending in cooperation with the diamond, and a part (not shown) above the workpiece W placed on the diamond. An elevating body 10 that is driven up and down by a driving means, a press pad 11 that is supported by the elevating body 10 so as to be relatively movable up and down, a die driving mechanism 12 for driving a part of the diamond, and a bend punch 8. and a punch drive mechanism 13,14 for driving the punch 9.

The die is a fixed die portion 15 that is integrally provided on the base 6.
and a movable die portion 16 that is movable on the base 6 to approach and move away from the fixed die portion 15. The upper surfaces of these die portions 15 and 16 are curved to correspond to the upper plate portion 1 of the workpiece W. Further, the mutually opposite side surfaces of both die portions 15.16 are formed into vertical planes corresponding to both side plate portions 2, 3 of the workpiece W, and bent portions 4.5 are formed at the lower portions of these side surfaces. Four parts 17,18 are provided for forming.

A movable plate 19 is slidably disposed on the base 6 so as to be able to approach and move away from the fixed die part 15, and the movable die part 1 is attached to the end of the movable plate 19 on the side of the fixed die part 15.
6 are integrally provided. Moreover, the movement of the movable plate 19 toward the fixed die portion 15 is regulated by a stopper 20 fixed to the base 6, and the receiver fixed to the end of the base 6 is connected to the member 21 and the movable plate 19. A spring 22 is interposed between the movable plate 19, that is, a spring 22 that biases the movable die portion 16 toward the fixed die portion 15.

One bend punch 8 is fixed to a cam follower 23 corresponding to the recess 17, and the cam follower 23 is slidably disposed on the base 6 so as to be able to approach and move away from the fixed die portion 15. . Moreover, the cam follower 23 is located at the end of the base 6.
A stopper 24 is fixedly installed to restrict movement away from the fixed die portion 15, and the cam follower 23, that is, the bend punch 8 is disposed between the fixed die portion 15 and the cam follower 23.
a spring 2 that urges the die away from the fixed die portion 15;
5 is interposed.

The other bend punch 9 is fixed to the cam follower 26 in correspondence with the recess 18 . The cam follower 26 allows the moving plate 19 to move relatively close to and away from the movable die portion 16.
It is slidably disposed on the top.

Moreover, a stopper 27 is provided on the end of the movable plate 19 opposite to the movable die portion 16 to prevent the cam follower 26 from moving away from the movable die portion 16. A spring 28 is interposed between them to bias the cam follower 26, that is, the bend punch 9 in a direction away from the movable die portion 16.

The fixed die portion 15 has a guide hole 29 that opens into the recess 17.
is drilled horizontally, and the opening of this guide hole 29 on the movable die portion 16 side is closed with a cover 30. Guide hole 2
A knockout pin 31 that movably penetrates the cover 30 is slidably connected to the cover 9 , and one end of the knockout pin 31 projects into the recess 17 and can come into contact with the tip of the bent portion 4 .

Moreover, the knockout pin 31 is biased toward the other end by a spring 32 interposed between the knockout pin 31 and the fixed die portion 15, and the other end of the knockout pin 31 is biased toward the other end when the movable die portion 16 approaches the fixed die portion 15. The movable die portion 16 is brought into contact with the movable die portion 16.

The movable die portion 16 has a guide hole 33 that opens into the recess 18.
is drilled horizontally, and the opening of this guide hole 33 on the fixed die portion 15 side is closed with a cover 34. Guide hole 3
A knockout pin 35 that movably penetrates the cover 34 is slidably fitted on the cover 3 , and one end of the knockout pin 35 projects into the recess 18 and can come into contact with the tip of the bent portion 5 . Moreover, the knockout pin 35 is biased toward the other end by a spring 36 interposed between it and the movable die portion 16, and the other end of the knockout pin 35 is attached to the movable die portion 1.
6 approaches the fixed die part 15, the fixed die part 1
5.

The press pad 11 is supported by the elevating body 10 so as to be able to move vertically relative to it within a limited range so as to come into contact with the upper surface of the workpiece W placed on the diamond.

Furthermore, a spring 37 is interposed between the elevating body 10 and the pressing pad 11 to bias the pressing pad 11 downward.

The elevating body 10 includes the cam follower 26 and the stopper 2.
A cam block 38 is fixedly installed corresponding to 7, and
A cam block 39 is fixedly provided corresponding to the cam follower 23.

The die drive mechanism 12 includes a pressing member 40 fixed to the cam block 38 and a pressure receiving member 41 fixed to the stopper 27.
The pressing member 4o is provided with a pressing surface 42 that is inclined upward in a direction away from the movable die portion 16, and the pressure receiving member 41 is provided with a pressing surface 42 that is inclined in a direction away from the movable die portion 16. An inclined pressure receiving surface 43 is provided. According to the bending configuration, when the cam block 38 descends and the pressing surface 42 comes into contact with the pressure receiving surface 43, the movable plate 19 is fixed against the spring force of the spring 22. It moves in a direction away from the die portion 15.

The punch drive mechanism 13 is composed of a cam block 39 and a pressure receiving member 44 fixed to the cam follower 23, and the cam block 39 has a pressing surface 45 that slopes upward toward the fixed die portion 15. The pressure receiving member 44 is provided with a pressure receiving surface 46 that is inclined in correspondence with the pressing surface 45 . According to this configuration, when the cam block 39 descends and the pressing surface 45 comes into contact with the pressure receiving surface 46, the cam follower 23, that is, the bend punch 8 is driven to press against the fixed die portion 15 side against the spring force of the spring 25. be done.

The punch drive mechanism 14 is composed of a cam block 38 and a pressure receiving member 47 fixed to the cam follower 26, and the cam block 39 has a pressing force that is inclined upward toward the movable die portion 16. A surface 48 is provided, and the pressure receiving member 47 is formed with a pressure receiving surface 49 that is inclined corresponding to the pressing surface 48 . According to this configuration, when the cam block 38 is lowered, the pressing surface 4B comes into contact with the pressure receiving surface 49, and the cam follower 26, that is, the pend bunch 9 is pressed against the spring 2.
The movable die portion 16 is driven to be suppressed against the spring force of 8.

Moreover, each drive mechanism 12, 13, 14 has 10 ascending bodies.
In response to the lowering of the die drive mechanism 12, the die drive mechanism 12 is set to operate first, and then the punch drive mechanism 13.14 is set to operate.

Next, to explain the operation of this embodiment, the elevating body 10
In the state where the movable die portion 16 is raised, the movable plate 19 is moved toward the fixed die portion 15 by the spring force of the spring 22, and the movable die portion 16 is close to the fixed die portion 15. The pendant bunch 8.9 is also separated from both die parts 15.16. In this state, the workpiece W to be machined is placed on both die portions 15 and 16 as shown in FIG.

When the elevating body 10 is lowered in this state, the moving plate 19, that is, the movable die portion 16 is moved in a direction away from the fixed die portion 15 by the action of the die drive mechanism 12, as shown in FIG. As a result, both side plate portions 2 of the work W
, 3 are applied to the outer surfaces of the fixed die portion 15 and the flexible die portion 16, respectively.
comes into contact with the upper surface of the workpiece W, and the workpiece W is clamped and fixed between the diamond and the pressing pad 11.

When the elevating body 10 further descends, as shown in FIG.
The punch drive mechanism 13.14 is actuated and the fixed die portion 15
A bent portion 4 is formed by the recessed portion 7 of the movable die portion 16 and the pend bunch 8, and a bent portion 5 is formed by the recessed portion 18 of the movable die portion 16 and the pend bunch 9.

After the bent portion 4.5 is formed in this way, the elevating body 10 rises as shown in FIG. 4. As a result, the pend bunch 8.9 moves away from both die parts 15.degree. 16, and the movable plate 19, that is, the movable die part 16 approaches the movable die part 15.

As a result, the other end of the knockout pin 31 comes into contact with the movable die portion 16 and is pressed toward the one end side, and the other end of the knockout pin 35 comes into contact with the fixed die portion 16 and is pressed toward the one end side. knockout pin 31
．． One end of the bent portion 4.5 comes into contact with the tip of the bent portion 4.5 and presses the bent portion 4, 5 to separate from the recessed portions 17, 18, and the bent portion 4.5 separates from the recessed portion 17, 18 do.

As a result, it becomes extremely easy to remove the workpiece W from the die after the bending process is completed, and since the position of the workpiece W does not shift, it is also easy to carry out the workpiece automatically.

In the above embodiments, the die is split into two parts, but it goes without saying that the present invention can also be applied to a four-part die that bends the entire circumference of the workpiece. The present invention can also be applied to a device in which only one side plate portion is bent. Further, although one of the die parts constituting the die is fixed, both die parts may be movable.

Further, although the above embodiment shows an example of a trimming bend, it is also possible to apply the present invention to a simple hemming bend mold device.

C3 Effects of the Invention As described above, according to the present invention, the knockout pin whose one end is capable of contacting the tip of the bent portion and is biased toward the other end is directed toward the one end when the die parts approach each other. When the bending process by the die and bend punch is completed and the die parts approach each other, the knockout pin moves to one end and the bent part moves to the die part. This makes it extremely easy to remove the workpiece after the bending process is completed, and it also becomes easy to automatically carry out the workpiece.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional side view of the mold device before the start of operation, and FIGS. 2, 3, and 4 sequentially show the state after the start of operation. FIG. l... Upper plate part, 2, 3... Side plate part, 4, 5... Bent part, 7... Tie, 8, 9... Bend punch, 15
... fixed die part, 16... movable die part, 31.
35... Knockout pin, W... Work

Claims (4)

[Claims] (1) A workpiece having an upper plate part and a side plate part bent downward from the edge of the upper plate part can be positioned and placed,
A die consisting of a plurality of die parts that can approach and separate from each other; When the die parts are in a state of separating from each other, the die part moves toward the die part side and bends the inwardly bent part to the side plate part of the workpiece. In a bending mold device equipped with a bend punch for forming a lower end, a knockout pin whose one end can come into contact with the tip of the bending part and is biased toward the other end is used when the die parts approach each other. A bending mold device characterized in that it is disposed in a die portion so as to move toward one end side. (2) The die is comprised of a pair of die parts, the bend punch is arranged corresponding to one die part, and the knockout pin is arranged only in one die part. Bend mold device according to scope (1). (3) The die is comprised of a pair of die parts, the bend punch is arranged corresponding to both die parts, and the knockout pin is arranged respectively in both die parts. The bend mold device described in (1). (4) The die is comprised of four die parts corresponding to the periphery of the workpiece, the bend punch is arranged corresponding to each die part, and the knockout pin is arranged respectively in each die part. A bending mold device according to claim (1).