KR100844908B1 - Branch busbar bending apparatus - Google Patents

Abstract

When the plate busbar is formed by instant plastic deformation of the cross section using a press after forming the plate in the thickness direction, the plate, which is a copper alloy steel plate, is cracked or bent due to the rapid deformation occurring during the bending process. Alternatively, the present invention is a bus bar located between the moving roller and the fixed roller with a punch that is moved up and down by a driving cylinder by placing a bus bar material having a plate bar shape on top of the fixed roller and the moving roller located in the guide groove of the die mold. By pressing the upper part of the material, the busbar material can be bent in the lateral direction, increasing the convenience of work and protecting the worker from danger, while obtaining a high quality and high precision branch busbar.

Switchboard, busbar, branch, bending, upper mold, lower mold.

Description

Branch busbar bending apparatus for manufacturing branch busbars

1 is a perspective view showing a punch that is part of the present invention.

Figure 2 is a perspective view of a die mold that is part of the present invention.

Figure 3 is a perspective view showing one example of the branch busbar formed by the mold apparatus according to the present invention.

Figure 4 is a perspective view of a portion of a die mold and branch busbars bent thereby, according to the present invention.

5 is a perspective view showing a mold apparatus for bending a branch busbar according to the present invention including a punch and a die mold.

* Explanation of symbols on important parts of the drawing

1: Punch 2, 2a: Mold Assembly

3: fixing part 4, 4a: forming part

5, 5a: guide part 6: fixed assembly

7 fixed part 8 fixed assembly part

9, 9a: die mold 10: fixing bolt

11: fixing roller fixing bolt 11a: fixing roller fixing bolt

12: transfer guide portion 12a: support spring

13, 13a, 13b: fastening portion 14: stop guide pin

15: busbar material fitting 16: fixed fastening

17: punch insert 18: guide groove

19: busbar fixing part 20: busbar material

21: drive cylinder 22: fixed connecting rod

23: body fixing part 24: moving roller
25: fixed roller 26: fixed support

100: branch busbar 101, 102: busbar fixture

The present invention relates to a bending method and a mold apparatus for manufacturing a branch busbar used in a breaker block of a switchgear. In particular, the present invention puts a bus bar material having a plate bar shape on top of the moving roller and the fixed roller located in the guide groove of the die mold, and the bus bar located between the moving roller and the fixed roller by a punch moved up and down by a driving cylinder. The present invention relates to a bending method and a mold apparatus for manufacturing a branch busbar to press the upper part of the material to bend the busbar material in the lateral direction.

Up to now, branch busbars, which are used to connect input and output terminals in switchgear panels, are formed by pressing flat plates up and down to form a certain shape, such as the bending of ordinary steel sheets, for smooth electrical flow. I'm using it right away.
However, since the branch busbars occupy a large area and maintain a short distance from each other, there is a lot of problems in the trend of requiring integration because of the occurrence of noise by the flow of current.
In order to improve this, conventionally, the plate was erected so that the width direction coincided with the up and down direction, and then the branch busbar was formed by instantaneous plastic deformation of the bent portion using a press, which is a wrinkle or an inner bending part and an outer bending part in the width direction. Is increased momentarily, the copper alloy steel sheet, which is the material of the branch busbar, is cracked or crushed due to the rapid deformation occurring during the bending process, and thus the performance of the branch busbar is not fulfilled.
In addition, excessive force is applied to the hands and wrists of the worker while pressing the press to form the branch busbars, which may cause an obstacle due to damage to the hands and wrists of the worker.

The present invention for solving the conventional problems as described above is to put a bus bar material having a plate bar shape on the top of the moving roller and the fixed roller located in the guide groove of the die mold to move up and down by the drive cylinder By pressing the upper part of the busbar material located between the moving roller and the fixed roller, the busbar material can be bent in the lateral direction to increase the convenience of work and to protect the worker from danger, while obtaining a high quality and high precision branch busbar. There is a purpose.
That is, the present invention does not cause deformation or balance even when one side of the busbar material is stretched in the process of bending the busbar material having a substantially wider width than the thickness in the width direction. have.

Bending method for manufacturing a branch busbar according to the present invention for achieving the above object, the branch busbar for manufacturing a branch busbar for inducing a smooth electric flow by connecting the input terminal and the output terminal in the switchboard A bending method comprising: a first step of fixing a bus bar fixing part by inserting a bus bar material made of copper and having a plate bar shape into a guide groove formed between a pair of die molds; A second step of driving the driving cylinder so that the busbar material is inserted into the molding part of the punch by the lowering of the punch together with the fixed support; And continuously driving the drive cylinder to move the moving roller while pressing the support spring by the pressure applied to the busbar material by the continuous lowering of the punch together with the fixed support, and the busbar touching the lowest portion of the punch insert. And a third step of bending the material in the width direction.

In addition, the bending mold apparatus for manufacturing a branch busbar according to the present invention, the body fixing portion is coupled to the lower portion of the die mold, the punch is coupled to the upper portion of the fixing support so that the punch is located on the upper portion of the punch insert of the die mold, A driving cylinder is installed between the die mold and the fixed support for driving the punch up and down together with the fixed support, the punch having a cylindrical shape and having fixed portions for coupling with the fixed support at both ends and having grooves in the middle portion. The die is formed and the die mold is two molds that are separated and coupled by a plurality of fastening portions, and the space between the two die molds for inserting the guide groove, the support spring, the moving roller, and the fixing roller is provided. It is formed, the busbar for fixing the busbar material on one side of the guide groove A government unit is installed, and the moving roller and the fixed roller are fixed by a moving roller fixing bolt and a fixed roller fixing bolt that penetrate the die mold horizontally, and the support spring is fixed to penetrate the moving roller and the die mold horizontally. It is characterized in that the transfer guide for guiding the horizontal movement of the moving roller is coupled to the end of the fixing roller and the fixing bolt exposed to the outside of the die mold.

Hereinafter, the present invention will be described in detail.

1 is a perspective view showing a punch which is a part of the present invention, FIG. 2 is a perspective view showing a die mold which is a part of the present invention, and FIG. 3 is a perspective view showing one example of a branch busbar formed by a mold apparatus according to the present invention. 4 is a perspective view showing a part of a die mold according to the present invention and a branch busbar bent thereby, and FIG. 5 is a perspective view showing a mold apparatus for bending a branch busbar according to the present invention including a punch and a die mold. to be.

As shown in Fig. 1, the punch 1 has a cylindrical shape, and the forming portions 4 and 4a are machined above and below the middle portion, and the guide portions of the die dies 9 and 9a are formed on the side surfaces of the middle portion. Guide portion 5 is processed into an inverted triangle for smooth insertion with 5a).

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At one end of the punch 1, a fixing part 3 for screwing with the die die 9 is machined into a screw shape, and at the other end, the fixing part 7 is mounted to mount the fixed assembly part 6. The fixing assembly part 6 is fastened to the bolt hole of (), and the fixing part 7 is fixed.

As shown in Fig. 2, the die die 9, 9a is composed of a die die 9 and a die die 9a which are separated and coupled to both sides by fastening portions 13, 13a, and 13b. When the dies 9 and 9a are integrally combined, the guide grooves 18, the moving rollers 24, and the fixed rollers 25 for inserting the busbar material 20 between the die dies 9 and 9a are integrated between the die dies 9 and 9a. Has space for installing it.

The punch insert 17 for inserting the punch 1 is processed in the middle part of the die die 9 and 9a, and the busbar material 20 is sandwiched between the die die 9 and the die die 9a. Guide grooves 18 are formed, and one side of the guide grooves 18 is provided with a busbar fixing part 19 for fixing the busbar material 20.

In addition, the moving roller 24 and the fixed roller 25 are inherent in the space between the die mold 9 and the die mold 9a. The moving roller 24 and the fixed roller 25 are the die mold 9. And a moving roller fixing bolt 11 and a fixing roller fixing bolt 11a that horizontally penetrate the die die 9a.

In addition, the guide groove 18 adjacent to the busbar fixing portion 19 is fastened to the stop guide pin 14 horizontally penetrating the die mold 9 and the die mold 9a, and moves with the fixing bolt 10. A support spring 12a is embedded between the moving rollers 24 fastened so as to be movable in the horizontal direction fixed by the roller fixing bolts 11, and fixing bolts exposed to the outside of the die molds 9 and 9a. 10 and the transfer guide part 12 for guiding the movement of the movement roller 24 are fastened to the end of the movement roller fixing bolt 11, the movement roller 24 to bend the busbar material 20 In the process it moves while compressing the support spring (12a).
In addition, the busbar material fitting fixing part 15 is installed near the guide groove 18 and the busbar fixing part 19 by the fixing fastening part 16 on the die die 9.
As described above, the moving roller 24 and the fixed roller 25 positioned in the space between the die mold 9 and the die mold 9a are moved by the moving roller fixing bolt 11 and the fixing roller fixing bolt 11a. The moving roller 24 and the fixed roller 25 are located at both sides of the punch insert 17.
The punch 1 configured as described above is positioned above the die molds 9 and 9a by the fixed support 26 and the fixed connecting rod 22, as shown in FIG. 5, and is disposed below the die molds 9 and 9a. Between the fixed body fixing part 23 and the die mold main body 26, the drive cylinder 21 for moving the punch 1 up and down with the die mold main body 26 is inherent.
That is, since the fixed support 26 moves up and down by the drive of the drive cylinder 21, the punch 1 installed in the upper end of the fixed support 26 is linked to the funnel insertion portion of the die dies 9 and 9a. 17) It will move up and down inside.
The process of bending the branch busbar by the configuration as shown in FIGS. 1 to 5 will be described.
First, in order to manufacture a branch busbar, a worker inserts a busbar material 20 having a plate bar shape of a predetermined length into the guide grooves 18 of the die molds 9 and 9a to fix the busbar material 20 to the busbar fixing part 19. Will be inserted.
Then, when the drive cylinder 21 is driven by an external input, the punch 1 is lowered together with the fixed support 26 by the drive cylinder 21. When the punch 1 is lowered to an appropriate height, the busbar material Bending work of the busbar material 20 is started as 20 is fitted into the forming portions 4 and 4a of the punch 1 and the punch 1 is continuously lowered by the drive cylinder 21.
The drive cylinder 21 causes the punch 1 to descend into the punch insert 17 of the die die 9 and 9a while continuously pressing the busbar material 20, whereby the fixed roller fixing bolt 11a is provided. The fixed roller 25 which is fastened by the busbar material 20 rotates in proportion to the lowering, and the moving roller 24 which is fastened by the moving roller fixing bolt 11 is the busbar material 20. While rotating in proportion to the lowering of the and while compressing the support spring (12a) by the pressure applied to the busbar material 20 by the punch (1) it moves in the direction in which the fixing bolt 10 is located.
At this time, in the busbar material 20, the plastic part of the molding part 4 and 4a of the punch 1 is gradually started along the bending radius of curvature.
And when the guide part 5 of the punch 1 adheres to the lowest part of the punch insertion part 17 of the die metal mold 9 and 9a by the continuous lowering of the punch 1, the busbar material 20 will Plastic deformation of the round shape is made.
Subsequently, the operator raises the punch 1 by driving the driving cylinder 21, and the busbar material 20 fired by the busbar fixing part 19 at a constant radius of curvature of the die die 9 and 9a. It can take out from the guide groove 18.
After finishing the bending process of the busbar material 20 through the above process, the worker manufactures busbar fixtures 101 and 102 on both ends of the busbar material 20 by means of a separate jig device, as shown in FIG. The production of the busbar 100 as described above is completed.

Therefore, according to the present invention, in consideration of the safety of the worker concerned during the bending work using the press, by performing the bending work in the width direction rather than the bending technology using the thickness of the bus bar has the advantage that can be efficiently used panel space It improves the work technology of branch bending, and at the same time, it is possible to prevent heat generated by noise and vibration caused by vibration.
In addition, the present invention is to increase the stiffness of the support by essentially reducing the cause of the noise caused by the integration in accordance with the trend that the integration is preferred for the switchboard of the electrical distribution panel that is essentially used in the electrical device As a result, it is possible to prevent vibrations that may occur due to the operation of switchboards, and to increase productivity, high quality and cost reduction, and related ripple effects on industrial equipment.

Claims (2)

delete The body fixing part 23 is coupled to the lower part of the die mold 9 and 9a, and the fixing support 26 is positioned so that the punch 1 is positioned above the punch inserting part 17 of the die mold 9 and 9a. Punch 1 is coupled to the upper portion of the drive cylinder for driving the punch 1 up and down together with the fixed support 26 between the die mold (9) (9a) and the fixed support (26) As 21 is installed, The punch 1 has a cylindrical shape, and fixing portions 3 and 7 for coupling with the fixed support 26 are formed at both ends, and grooved shaped portions 4 and 4a are formed in the middle portion. , The die molds 9 and 9a are two molds which are separated and coupled by a plurality of fastening portions 13, 13a and 13b, and a guide groove 18 between the two die molds 9 and 9a. And a space for incorporating the support spring 12a, the moving roller 24, and the fixing roller 25, and a busbar fixing part for fixing the busbar material 20 on one side of the guide groove 18. (19) is installed, the moving roller 24 and the fixed roller 25 by the moving roller fixing bolt 11 and the fixed roller fixing bolt (11a) horizontally penetrating the die mold (9) (9a). The support spring 12a is held between the moving roller 24 and the fixing bolt 10 that horizontally penetrates the die mold 9 and 9a, and the support spring 12a of the die mold 9 and 9a. An end of the moving roller fixing bolt 11 and the fixing bolt 10 exposed to the outside is coupled to the transfer guide portion 12 for guiding the horizontal movement of the moving roller 24 Bending the mold apparatus for manufacturing the branch busbars, characterized in that the.

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