KR200235125Y1 - Press mold apparatus for bending molding - Google Patents

Abstract

The present invention relates to a press die apparatus for bending molding, in a press die apparatus for bending both sides of a pre-painted iron sheet material, the vertical direction so as to press both the upper surface and the first bend at the same time A first punching part operated in a horizontal direction, a second punching part operated in a horizontal direction so as to press both sides of the material and bend secondly after the first punching part is lowered, and a movement of the first and second punching parts. Accordingly, it is characterized in that it comprises a die portion for tightly supporting the bottom and side of the material so as to be bent in two stages by pressing both sides of the material in the primary and secondary.

Therefore, according to the present invention, since both sides of the steel sheet material can be bent in two stages without installing a separate dedicated line on one press line, not only can the equipment investment cost be reduced but also the productivity due to the reduction of the molding process can be increased. In addition, the quality of the product can be further improved.

Description

Press mold apparatus for bending molding

The present invention relates to a press die apparatus for bending molding, and more particularly, a press mold apparatus for bending molding which can bend-processed both sides of a steel plate material in two stages in one press line without using a separate jig or dedicated machine. It is about.

In general, press working is a kind of plastic working that can be molded into a predetermined product by using a press die device to mainly cut a sheet material or to change the thickness of the sheet without changing or changing the thickness of the sheet. For example, it can be processed into various forms such as shearing, punching, trimming, bending, burring, curling, drawing, and the like.

A press mold apparatus used for conventional bending molding is schematically shown in FIG.

1, a punch 1 is coupled to both lower ends of a punch holder 3 fixed to a press ram (not shown), and a pad 5 capable of pressing a plate-like material 8 between the punches 1. ) Is elastically installed so as to flow up and down by the elastic member 6. Here, between the punch holder 3 and the pad 5, the mill pin 7 is inserted to be able to flow up and down.

In the lower part of the punch 1, the die 2 is fixed to the die holder 4 so as to face each other with the insertion and molding space of the raw material 8 interposed therebetween.

In the conventional press mold apparatus configured as described above, when the punch 1 is lowered by the operation of a press ram (not shown), the pad 5 presses the upper surface of the raw material 8 while the punch 1 and the die ( Both ends of the raw material 8 are bent by the up and down pressing action with 2). At this time, the elastic member 6 supporting the pad 5 is compressed and at the same time, the push pin 7 is pushed up.

After that, when the die 2 is raised, the raw material 8 sandwiched between the punches 1 is separated by the restoring force of the pad 5.

However, in this conventional mold apparatus, the punch 1 is operated only in the vertical direction from the die 2, so that both surfaces of the material 8 can be bent only once. Accordingly, in order to bend the material 8 in two stages, it is necessary to separately install another dedicated line in addition to the press line, and then use a fixture or a dedicated machine.

In this case, not only the enormous investment facilities have to be made, but also the product forming process is increased, so there is a problem in that economic efficiency and productivity are lowered.

In addition, if scratches or dents remain on the surface of the material 8 in the process of taking out the material 8 to another dedicated line, there is a problem of degrading the quality of the product.

For example, in the case of a pre-painted iron plate material (PCM material) such as a refrigerator door plate, in order to prevent this, by bending vinyl or the like on the outer surface of the material 8, or even processing Since the coating process is required later, the work process is unnecessarily increased and the production cost is also increased.

Therefore, the present invention was devised to solve the above problems, and an object of the present invention is to simplify the molding process by bending the two sides of the steel sheet material in two stages in one press line without using a separate jig or dedicated machine. In addition to providing a press molding apparatus for bending molding that can increase the productivity of the product.

The press molding apparatus for bending molding according to the present invention for achieving the above object, in the press mold apparatus for bending both sides of the pre-painted iron sheet material, pressing the upper surface of the material and at the same time both ends A first punching portion operated in a vertical direction to bend, a second punching portion operated in a horizontal direction so as to bend at the same time as pressing down both sides of the material after the first punching portion is lowered, and the first punching portion; And a die part for closely supporting the bottom and side surfaces of the material so as to bend and press the both end surfaces of the material as the second and second steps according to the movement of the second punching part.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view schematically showing the structure of a conventional press die apparatus for bending molding.

2 and 3 are cross-sectional views schematically showing the configuration and operating state of the press die apparatus according to the present invention, Figure 2 is a state diagram before molding, Figure 3 is a state diagram after molding.

Figure 4 is a perspective view of a molded product according to the present invention.

Explanation of symbols on the main parts of the drawings

10: first punching portion, 12: first cam punch,

14: punch holder, 16: pad,

20: second punching portion, 22: fixing member,

24: movable member, 26: second cam punch,

28, 29: elastic member, 30: die portion,

40: material.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

2 and 3 are cross-sectional views schematically showing the configuration and operating state of the press die apparatus according to the present invention, Figure 2 is a state diagram before molding, Figure 3 is a state diagram after molding.

In the figure, reference numeral 10 denotes a first punching portion coupled to a sliding ram (not shown) of the press apparatus, which is pushed up and down in the vertical direction so as to press both the upper surfaces of the plate-shaped material 40 and to bend both ends first. It works.

That is, the first punching portion 10 is elevated by the elastic force of the elastic member 18 inside the first cam punch 12 and the first cam punch 12 supported and fixed to the punch holder 14. It is provided with a pad 16 that is installed in a ball shot.

In addition, an elastic member 18 and a mill pin 19 are inserted between the punch holder 14 and the pad 16 so as to be movable upward and downward.

Reference numeral 20 denotes a second punching part which is slidably coupled to both sides of the die holder 34, and the material 40 which is primarily bent after the first cam punch 12 of the first punching part 10 is lowered. Sliding in the horizontal direction is possible to bend the second side and simultaneously bend to both sides.

The second punching part 20 includes a fixing member 22 fixed to the die holder 34, a movable member 24 provided to be elastically moved so as to be horizontally moved to the fixing member 22, and the movable member ( A second cam punch 26 is provided to provide a pressing force horizontally in accordance with the movement of 24.

Here, the elastic member 26 is inserted and installed between the fixing member 22 and the movable member 24, and the second cam punch 26 is formed by the elastic member 29 in the die 32 which will be described later. Bullet is installed. The elastic member 29 preferably applies a gas spring.

Reference numeral 30 denotes a die portion fixed to a bolster (not shown) of the press apparatus, which presses both end surfaces of the material 40 first and second in accordance with the movement of the first and second punching portions 10 and 20. To support the bottom and side surfaces of the material 40 to be bent in two stages.

That is, the die part 30 may allow the die 32 facing the pad 16 to bend both end surfaces of the material 40 according to the horizontal and vertical movement of the first and second cam punches 12 and 26. Is fixed to the die holder 34 so that it can be secured.

The press-molding apparatus for bending molding according to the present invention provided as described above, first, when the first punching portion 10 is lowered according to the operation of the press ram (not shown), the first cam punch 12 with the pad down 16 presses the upper surface of the material 40. At this time, the elastic member 18 is compressed and the mill pin 19 is pushed up.

If the first punching portion 10 is continuously lowered, the outer both end surfaces of the raw material 40 are subjected to the mutual press action of the first cam punch 12 and the die 32 to bend primarily.

At this time, the first cam punch 12 pushes the movable member 24 back according to its lowering action and simultaneously pushes the second cam punch 26 forward.

Accordingly, the second punch forms the bent end 42 as shown in FIG. 4 by bending the material 40 secondarily by mutually pressurizing the side surface of the die 32.

After molding the material 40 in this manner, the first punching portion 10 is first raised and the second cam punch 26 is returned to its original position by the restoring force of the elastic member 32.

Then, the movable member 24 is also backed off in a secondary manner so as not to be damaged or caught when the bent end 42 of the raw material 40 is taken out from the die 32.

According to the present invention described above, since both sides of the steel sheet material can be bent in two stages without installing a separate dedicated line in one press line, it not only reduces equipment investment cost but also increases productivity due to the reduction of the molding process. Of course, the quality of the product can be further improved.

Claims (4)

In the press die apparatus which bends the both sides of the prepainted iron plate material, A first punching part operated in a vertical direction to press the upper surface of the material and to bend both ends primarily; A second punching part which is operated in a horizontal direction so as to press both sides of the material and bend the second side simultaneously after the first punching part is lowered; Bending molding press, characterized in that it comprises a die portion for closely supporting the bottom and side of the material so that the first and second pressing the first and second cross-section of the material to be bent in two stages in accordance with the movement of the first punching part. Mold device. The method of claim 1, The first punching portion and the first cam punch which is supported and fixed to the punch holder, Bending molding press die apparatus comprising a pad that is installed in such a way that it can be raised and lowered inside the first cam punch. The method of claim 1, The second punching part and a fixing member fixed to the die holder; A movable member installed to be elastically movable horizontally to the fixing member; And a second cam punch for providing a pressing force horizontally in accordance with the movement of the movable member. The method of claim 3, wherein The second cam punch is a press molding device for bending molding, characterized in that the side of the die is installed in a ball shot so as to be movable horizontally by the elastic member.