KR200209848Y1 - Combination apparatus of punching die - Google Patents

Abstract

The present invention relates to a punching die bonding structure,

Conventional punching die coupling structure does not include a means for guiding the upper die in place when the upper die is coupled to the arm, so that the upper die can be correctly inserted into the punching hole when the upper die is coupled to the arm. There was a problem that the upper die joining operation was not very easy, such as inserting a fixing bolt to one side of the arm and fixing the upper die after precisely adjusting the position so that the upper die was joined. Since the precision was lowered, and during the punching operation, it is necessary to rotate the installation position of the upper die and the lower die at an angle according to the remaining amount of the steel plate. Very difficult problem occurred.

Accordingly, the present invention for solving the above problems is to form a positioning groove and a positioning rod on the upper die and the arm, respectively, to accurately determine the coupling position of the upper die when the upper die for punching to the arm, By forming a plurality of positioning grooves having a 90 ° phase angle to rotate the coupling direction of the upper die by 90 ° angle, it is very easy to attach and detach the upper die during punching operation, and also to fix the fixing position of the lower die. The present invention relates to a punching die coupling structure in which workability is improved by allowing the coupling position of the upper die to be accurately set in connection with a fixed position of the lower die.

Description

Combination apparatus of punching die

The present invention relates to a punching die coupling structure of a press machine for punching a plate-shaped workpiece, and more particularly to an upper die for punching.

In order to punch a specific shape from a continuously supplied plate-like workpiece, a machining operation is performed using a press machine equipped with a pair of upper and lower punching dies each consisting of male and female. The lower die with a punching hole is fixed to the base member and punched. The upper die, which blades together with the periphery of the hole, is fixed to the lower part of the piston (ram, arm) which moves up and down.

7 shows a conventional punching die bonding structure,

Guide grooves 32 are formed in the base 40 on which the iron plate 34 to be cut is placed, and guides 32 formed on both sides of the lower die 30 are inserted into the guide grooves 32.

A punching hole 33 is formed at the center of the lower die 30 to determine the cutting shape of the iron plate 34. The arm 10 reciprocates up and down by a separate hydraulic pressure to the upper side of the lower die 30. The upper die 20 is fixedly mounted.

A coupling hole 11 of a predetermined depth is formed at the center lower end of the arm 10, and a fixing bolt 12 is inserted into one side of the coupling hole 11.

The engaging portion 21 formed in the upper side of the upper die 20 is inserted into the engaging hole 11 of the arm 10, which is positioned by the end of the fixing bolt 12 on the outer circumferential surface of the engaging portion 21. The coupling groove 22 is formed to be cut flat to determine the upper die 20 is inserted into the punching hole 33 when the arm 10 is lowered to cut the iron plate 34.

The conventional punching die coupling structure configured as described above,

First, the guide 31 of the lower die 30 is inserted into the guide groove 32 formed in the base 40 so that the lower die 30 is positioned at the upper end of the base 40 and then the arm 10 is coupled. Insert the coupling portion 21 of the upper die 20 into the ball (11).

Tighten the fixing bolt 12 of the arm 10 while the coupling portion 21 of the upper die 20 is inserted into the coupling hole 11 so that the end of the fixing bolt 12 is in close contact with the coupling groove 22. The upper die 20 is fixed to the arm 10.

As described above, the upper die 20 is coupled to the arm 10, and the iron plate 34 to be cut is positioned on the upper end of the base 40 in a state where the lower die 30 is installed on the base 40. Since the arm 10 is lowered by hydraulic pressure, the upper die 20 passes through the punching hole 33 as the hydraulic drive device is not shown. As a result, the iron plate 34 has the shape of the punching hole 33. To be cut.

However, in the conventional punching die coupling structure, when the upper die 20 is coupled to the arm 10, the upper die 20 is not armed because the means for guiding the upper die 20 to be engaged in place is not configured. When the upper die (20) is coupled to the upper die 20 can be inserted into the punching hole (33) roughly adjust the roughly the insertion position of the eye after the combination of the upper and lower ends (20, 30) is matched with the arm (10) Tighten the fixing bolt 12 fastened to the) to fix the upper die 20, such as the upper die coupling operation was not very easy.

In addition, in order to achieve the maximum punching yield from the iron plate 34 which is a plate-shaped workpiece, the fixing position of the punching hole 33 of the lower die 30 is changed to have a 90 ° phase difference corresponding to the iron plate 34 width. However, in the conventional case, since the upper die 20 has only one fixed position, the number of molds must be replaced with a new die having a structure capable of fixing the upper die 20 to match the changed punching hole 33. It is pointed out that it is difficult to bring about an increase or to change the position of the mold.

Therefore, in order to solve the above problems, the present invention forms a positioning groove and a positioning rod on the upper die and the arm, respectively, to accurately determine the coupling position of the upper die when the upper die for punching is coupled to the arm. In the present invention, a plurality of positioning grooves having a phase difference of 90 ° are formed so that the upper die can be rotated at an angle of 90 ° in accordance with the fixed position of the lower die by forming two positioning grooves. It is not only very easy, but also the precise position of the upper die can be set precisely, and the fixing position of the upper die can be changed, so that the maximum yield can be adjusted according to the width of the supplied sheet, and the punching die is combined to improve workability. The purpose is to provide a structure.

Features of the present invention for achieving the above object,

A lower die coupled to a base of the press machine and having a punching hole formed in the center thereof; An arm formed above the base so as to be movable by a cylinder and having a coupling hole formed at a center lower end thereof; In the configuration consisting of an upper die protruding upwardly coupled to the coupling hole of the arm,

First and second positioning grooves each recessed at positions having a phase angle of 90 ° to each other on the outer circumferential surface of the positioning plate formed at the upper end of the upper die for positioning of the upper die;

A positioning rod which protrudes downward on one side of the arm and is selectively inserted into the first or second positioning groove when the upper die is coupled to determine an engagement position of the upper die;

First and second coupling grooves respectively formed on an outer circumferential surface of the coupling portion so as to exist at a position having a predetermined angle phase difference with respect to the first or second positioning groove;

A fixing bolt inserted into one side of the arm so that the upper die is fixed while being opposed to the first or second coupling groove; Characterized in that consisting of.

1 is a cross-sectional view showing a punching die coupling structure of the present invention.

Figure 2 is a perspective view showing an upper die applied to the present invention.

Figure 3 is a side view showing an upper die applied to the present invention.

Figure 4 is a perspective view showing a lower die applied to the present invention.

5 and 6 are views showing an example of use of the present invention.

7 is a view showing a conventional punching die coupling structure.

※ Explanation of code for main part of drawing

1: positioning rod 2: positioning plate

3: first positioning groove 4: second positioning groove

5: first coupling groove 6: second coupling groove

10: Arm 11: Combiner

12: fixing bolt 20: upper die

21: coupling portion 30: lower die

31: Guide 33: Punching Hole

40: base

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 6, as follows. The same components as in the prior art are denoted by the same reference numerals to avoid repeated descriptions.

According to the drawings, the present invention is roughly composed of a positioning rod 1, a positioning plate 2, first and second positioning grooves 3 and 4, and first and second coupling grooves 5 and 6. do.

The positioning plate 2 is formed on the upper side of the upper die 20. In the present invention, the positioning plate 2 is shown as an example in a circular shape, and on the outer circumferential surface of the positioning plate 2 is shown. And second positioning grooves 3 and 4 at regular intervals.

The first positioning groove 3 and the second positioning groove 4 are formed to have a phase angle of 90 ° to each other.

That is, if the first positioning groove 3 is formed on the left side of the positioning plate 2 as shown in FIG. 2, the second positioning groove 4 is counterclockwise or clockwise with respect to the first positioning groove 3. It is formed at a position having a 90 ° phase angle in the direction.

In addition, at one side of the outer circumferential surface of the arm 10, a positioning rod 1 that is selectively inserted into the first or second positioning grooves 3 and 4 and guides the upper die 20 to be engaged in position is provided. It is fixed by bolts.

As shown in the figure, the positioning rod 1 is formed so that the lower end thereof protrudes under the arm 10, so that the positioning rod 1 is formed when the upper die 20 is coupled to the arm 10. It can be inserted into the first or second positioning groove (3) (4).

That is, when the upper die 20 is coupled to the arm 10, the first positioning groove 3 or the second positioning groove 4 is to receive the lower end of the positioning rod 1 in its recess. The coupling position of the upper die 20 is set correctly.

Meanwhile, the first coupling groove 5 and the second coupling groove 6 are formed on the coupling portion 21 protruding from the upper end of the upper die 20.

Each of the coupling grooves 5 and 6 is opposed to the fixing bolt 12 which is screwed in from the outside of the arm 10 when the coupling portion 21 is inserted into the coupling hole 11 of the arm 10. In order to fix the jersey upper die 20 and to prevent rotation, the outer peripheral surface of the coupling portion 21 is formed by plane cutting as shown in FIG. 3.

The position at which the first coupling groove 5 and the second coupling groove 6 are formed may have a predetermined angle phase difference with respect to the first or second positioning grooves 3 and 4.

For example, the first coupling groove 5 is formed at a position 90 ° counterclockwise than the first positioning groove 3, and the second coupling groove 6 is formed more than the second positioning groove 4. 90 ° counterclockwise position.

Referring to the operation of the present invention configured as described above are as follows.

When the upper die 20 is to be coupled to the arm 10, first, the positioning rod 1 is inserted into the first positioning groove 3 of the upper die 20, as shown in FIG. 5. The upper die 20 is raised to allow the coupling portion 21 to be inserted into the coupling hole 11 of the arm 10.

As the upper die 20 is coupled to the arm 10, the positioning rod 1 is inserted into the first positioning groove 3, and the upper die 20 is a punching hole 33 of the lower die 30. Will be automatically set to the same position as).

When the fixing bolt 12 is inserted into the hole 13 formed on one side of the arm 10 while the upper die 20 is inserted into the arm 10 as described above, the fixing bolt 12 is coupled to the coupling portion 21. The upper die 20 is firmly fixed while being opposed to the first coupling groove 5 formed on the outer circumferential surface of the upper die 20.

Meanwhile, as described above, while the upper die 20 is coupled to the arm 10, the punching hole 33 of the lower die 30, for example, a hole except for a circular shape, has a punching hole 33. In order to change the coupling position of the upper die 20 by correspondingly mounting the lower die 30 so that the position of) has a 90 ° phase difference,

First, the lower die 30 is removed from the guide groove 32 of the base 40, rotated by 90 °, and inserted again to change the direction of the punching hole 33.

Thereafter, the fixing bolt 12 is released to remove the upper die 20 from the arm 10, and then the upper die 20 is rotated clockwise so that the positioning rod 1 is inserted into the second positioning groove 4 again. Rotating and inserting into the coupling hole 11 of the arm 10, and tightening the fixing bolt 12 so that the end of the fixing bolt 12 is strongly against the second coupling groove (6) of the upper die 20 Complete the join.

As described above, when the positioning position of the upper die 20 is to be changed, the positioning rod 1 is inserted into the second positioning groove 4 of the upper die 20. The location is simple and accurate.

For example, assuming that the size of the punching hole 33 of the lower die 30 is a square hole having a width of 30 mm and a length of 50 mm, a strip-shaped iron plate having a width of 60 mm is supplied to perform a punching process. Assuming that this 40 mm iron plate is supplied as the material,

The lower die 30 of the standard changes its XY axis direction, that is, fixed to have a 90 ° phase difference (that is, fixed to form a punching hole 50 mm long and 30 mm long), and the upper die 20 is also adjusted accordingly. Changing to 90 ° eliminates the need for a separate mold because only one mold die can be punched to achieve the maximum yield for a 60mm wide or 40mm wide material.

As described above, the present invention forms a positioning groove and a positioning rod on the upper die and the arm, respectively, which accurately determine the coupling position of the upper die when the upper die for punching is coupled to the arm. By forming two positioning grooves so that the coupling direction of the upper die can be rotated by a certain angle, the upper die can be easily attached and detached during punching operation, and the working position can be set accurately by setting the coupling position of the upper die. It is improved, and in particular, by a plurality of positioning grooves can easily change the mounting fixed position of the upper end, there is an effect that can greatly increase the punching yield and work convenience.

Claims (2)

A lower die 30 coupled to the base 40 of the press machine and having a punching hole 33 formed in the center thereof; An arm 10 formed on the upper side of the base 40 so as to be movable by a cylinder, and an engaging hole 11 formed at a center lower end thereof; In the configuration consisting of the upper die 20, the coupling portion 21 for inserting and fixing in the coupling hole 11 of the arm 10 protrudes upwards, A first positioning groove 3 formed on the outer circumferential surface of the positioning plate 2 formed at the upper end of the upper die 20 for positioning of the upper die 20; A positioning rod 1 protruding downward on one side of the arm 10 to be inserted into the first positioning groove 3 when the upper die 20 is coupled to determine an engagement position of the upper die 20; ; A first coupling groove 5 formed on an outer circumferential surface of the coupling portion 21; A fixing bolt 12 which is screwed into one side of the arm 10 so as to be opposed to the first coupling groove 5 so that the upper die 20 is fixed; Punching die coupling structure, characterized in that consisting of. The method of claim 1, The second positioning groove 4 is formed at a position having a 90 ° phase angle with the first positioning groove 3, and on the outer circumferential surface of the engaging portion 21, 90 ° phase angle Punching die coupling structure, characterized in that the second coupling groove (6) is formed to have.