KR101838655B1 - Side Cutting Press Mold - Google Patents

Abstract

The present invention relates to a press machine, comprising: an upper plate (110) mounted on a press machine; A punch plate 120 coupled to a lower surface of the upper plate 110 to move up and down together; A cam drive 130 coupled to the lower portion of the punch plate 120 so as to be raised and lowered together therewith; A gauge 140 coupled to the lower portion of the punch plate 120 to be inserted into the center of the material 22 to be formed when the upper plate 110 is lowered; A lower plate 210 fixed to the bed of the press to correspond to the upper plate 110; A die plate 220 coupled to the upper surface of the lower plate 210 to correspond to the punch plate 120 and receiving the material 22 to be lowered in engagement with the gauge 140; A cam slider 230 slidably coupled to the die plate 220 in a horizontal direction and approaching toward the material 22 engaged with the gauge 140 while the one side is pushed in contact with the descending cam drive 130, ; And is engaged with the cam slider 230. The lower end of the material is engaged with the gauge 140 and is positioned inside the lower end of the lowered material and is pushed by the descending cam drive 130 to abut the inner side of the lower end of the material, And the side cutter 240. When the cam drive 130 is lifted, the cam slider 230 and the side cutter 240 are returned to their initial positions by a spring.

Description

{Side Cutting Press Mold}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side cutting press die for precisely cutting a lower end portion of a material which is deeply drawn in a circular shape and then molded into an elliptical or slot shape, Shock lines, waves, damage, and the like are removed so as to achieve a waterproof effect in the case of a relative water assembly, and the occurrence of a dimensional variation is prevented.

Currently, USB connectors and I / O connectors are manufactured worldwide by a bending method. However, as shown in FIG. 1, there is a cutting line, and there is a lot of contact failure due to breakage of the joint where the cutting lines abut In fact.

In order to solve the problems of the prior art, many companies worldwide have attempted to produce products by seamless drawing (elliptical) drawing method since 2014, but in the case of Deep Drawing ) Method, the length of the long side and the length of the short side are different from each other when the final product shape of the release mold is formed step by step. Therefore, there is a problem that the thickness of the long side is thinner than that of the short side, There is a high possibility that a shock line or scratch occurs along the surface of the finished product and a shape in which the lower corner portion of the lower side is stretched occurs and interference or interference occurs with peripheral components during the following assembly process The assembly operation is delayed and the quality of the final product can not be guaranteed.

In addition, after the deep drawing or release molding is completed, the bending portion of the lower end of the formed material is spread by a burring operation. In the burring operation, R bending occurs at the end of the final product, , There is a problem that bending due to damage or the like is severe and a dimensional variation is severely generated.

[Prior Art Literature]

Registration No. 10-1401963

Patent No. 10-1362338

Japanese Patent Application Laid-Open No. 10-2016-0121878

In order to solve the above-mentioned problems, the present invention has been developed to solve the above-mentioned problems, and it is an object of the present invention to provide a shock- It is an object of the present invention to provide a cutting press mold having a novel structure capable of eliminating or preventing a deviation and a dimensional variation caused by a wave, a damage, and the like.

Technical features of the present invention are as follows.

The present invention relates to a mold for side-cutting a lower end portion of a material formed in an elliptical or slot shape, and is mounted on a press machine and is lifted and lowered by an upper plate (110); A punch plate 120 coupled to a lower surface of the upper plate 110 to move up and down together; A cam drive 130 coupled to the lower portion of the punch plate 120 so as to be raised and lowered together therewith; A gauge 140 coupled to be protruded to a lower portion of the punch plate 120 and inserted into a center portion of the material 22 to be formed when the upper plate 110 is lowered; A lower plate (210) fixed to the bed of the press to correspond to the upper plate (110); A die plate 220 coupled to an upper surface of the lower plate 210 so as to correspond to the punch plate 120 and receiving a material 22 which is engaged with the lower surface of the gauge 140; The other end of the cam slider is slidably coupled to the die plate 220. The other end of the cam slider is moved toward the cam 22, (230); And the cam drive unit 130 which is located at the lower end of the lowered portion of the lowered member engaged with the gauge 140 and is pushed by the cam drive 130 and contacts the inner side of the lower end of the material, The cam slider 230 and the side cutter 240 are moved to the initial position by a spring when the cam drive 130 is lifted, The side cutter 240 and the cam slider 230 are arranged to be pushed forward by the cam drive 130 so that the lower end of the material 22 Structure to cut the front; A structure that is arranged to be pushed rearward by the cam drive 130 to cut the rear surface of the lower end of the material 22; A structure that is arranged to be pushed rightward by the cam drive 130 to cut the lower right side surface of the material 22; And a structure in which the left side of the lower end of the material 22 is arranged to be pushed to the left by the cam drive 130. The lower end of the material 22, which is continuously arranged at predetermined intervals, As shown in Fig.

Technical effects of the configuration of the present invention are as follows.

First, it is possible to prevent the occurrence of deflection and dimensional deviation of R bending at the lower end of the product, thereby minimizing the defective rate in the subsequent process.

In other words, by performing the side cutting work using the mold rather than the burring operation, it is possible to prevent the bending of the R bending and the variation of the dimension at the lower end of the product and to straighten the end of the product, The quality can be improved.

Second, it can maximize production efficiency through automation as a structure that can be cut step by step while continuously supplying materials.

In other words, it is possible to automate the continuous supply of the material in the form of a sheet metal by arranging the dies for side cutting sequentially in accordance with the working portions, thereby maximizing the production efficiency.

Thirdly, side cutting is performed in a state in which the material is completely adhered to the die plate 220, so that the occurrence of a step on the end face of the lower end of the product can be prevented.

FIG. 1 shows a case where a conventional USB connector is produced by a bending method and a cutting line exists in a joint portion.
FIG. 2 illustrates a process of molding a release shell having a different length ratio between a long side and a short side in a conventional multi-stage deep drawing method.
Figure 3 schematically shows the cross-sectional structure of the present invention.
4 is a cross-sectional view schematically showing the operation principle of the present invention. (A) A state in which the cam slider 230 abutted against the cam driver 130 is moved and moved just before the cam driver 130 is moved, (b) And the lower end side face of the material 22 is cut while the cam slider 230 is pushed down.
Figure 5 shows a lift 250 supporting a continuously fed material 22.
6 shows a planar structure of a lower plate 210, a die plate 220, a cam slider 230, and a side cutter 240 of a specific embodiment of the present invention.
7A and 7B are sectional views showing a case where the front and rear surfaces of the lower end of the material 22 are cut and the cam slider 230 and the side cutter 240 Respectively.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

The present invention relates to a mold for side-cutting a lower end portion of a material which is deeply drawn into a circular shape and then molded into an elliptical or slot shape, and a schematic structure and a working principle are shown in FIGS.

The present invention can be applied to the upper plate 110, the punch plate 120, the cam drive 130, the gauge 140, the lower plate 210, the die plate 220, the cam slider 230, the side cutter 240, And a lift 250. The detailed description of the same or similar components to those of a general mold will be omitted.

The upper plate 110 is attached to a press machine and serves as a body for ascending and descending.

The punch plate 120 is coupled to the lower surface of the upper plate 110 and moves up and down together.

The cam drive unit 130 is coupled to the lower portion of the punch plate 120 so as to couple with the upper plate 110 and moves up and down together with the upper plate 110. When the cam slider 230 is pushed up and down together with the upper plate 110, And moves it in the horizontal direction.

The lower end of the cam drive 130 may be chamfered to form the inclined surface 11 as shown in FIG. 3 or FIG.

The gauge 140 is coupled to protrude to the lower portion of the punch plate 120 and is inserted into the center hollow space of the material 22 to be formed while descending together with the upper plate 110 to be engaged with the material 22.

As shown in FIG. 3, the gauge 140 may be resiliently supported by a spring incorporated in the upper plate 110, so that the gauge 140 may be pushed up by a predetermined distance when an external force of a predetermined magnitude or more is applied.

In other words, the gauge 140 is resiliently supported by a spring incorporated in the upper plate 110, continues to descend in engagement with the material 22, and the material 22 is received in the die plate 220, The material 22 can be stably contacted to the die plate 220 while being pushed upward along the punch plate 120 in proportion to the descending distance of the upper plate 110 .

The lower plate 210 is fixed to the bed of the press so as to correspond to the upper plate 110.

The die plate 220 is coupled to the upper surface of the lower plate 210 so as to correspond to the punch plate 120. The die plate 220 is provided with a material 22 are provided.

The cam slider 230 is slidably coupled to the die plate 220 in a horizontal direction so that one side of the cam slider 230 is pushed in contact with the descending cam drive 130 and the other side is moved toward the material 22 engaged with the gauge 140 .

The cam slider 230 may also be chamfered to one side of the cam drive 130 to form the inclined surface 11.

The side cutter 240 is coupled to the other side of the cam slider 230. The side cutter 240 is located inside the lower end of the lowered material engaged with the gauge 140 shown in FIG. 3 or 4, When the cam slider 230 is pushed by the cam drive 130, the lower end portion of the material abuts against the inside of the lower end portion of the material.

The side cutter 240 may be separately manufactured and attached to the cam slider 230, It may be manufactured integrally with the cam slider 230 from the beginning.

The cam slider 230 and the side cutter 240, which are formed as a single body, are not shown separately in the accompanying drawings. When the cam drive 130 rises, the cam slider 230 and the side cutter 240 are returned to their initial positions by a spring (not shown).

The operation principle of the present invention shown in FIG. 4 is as follows. For convenience of understanding of the drawings, the lift 250 is separately shown in FIG. 5 and not shown together.

4A shows a state immediately before the cam slider 230 abutted against the cam driver 130 is pushed and moved. When the material 22 is received and placed in the die plate 220, The gauge 140 is pushed upward along the punch plate 120 in proportion to the lowering distance of the upper plate 110 while the lowering of the material 110 is continued for a predetermined distance, 220, respectively.

4B shows a state in which the cam drive 130 is further lowered and the cam slider 230 is pushed to cut the lower end side face of the material 22. When the cutting is completed, The cam slider 230 returns to the initial position.

5, the lift 250 is elastically supported by a spring (not shown) built in the die plate 220 and protrudes from the upper surface of the die plate 220 .

In each upper portion of each of the lifts 250, there is provided a material mounting groove 255 into which both ends of the material 22 are inserted. Therefore, both side ends of the circularly deep-drawn or deformed-shaped material 22 are inserted into the material mounting grooves 255 of the opposite lifts 250,

When such a lift 250 is provided, as shown in FIG. 5, when the material 22 is deep-drawn or deformed at regular intervals along a sheet metal, It is also easy to supply.

When the gauge 140 is lowered and engaged with the supplied material 22 and then continues to be lowered, the spring for elastically supporting the lift 250 is compressed so that the lift 250 is lowered together with the material 22, When the gauge 140 is raised together with the upper plate 110 after the molding is completed and the external force is removed, the lift 250 is raised by the spring to return to the initial position.

As shown in FIGS. 6 to 8, a plurality of molds for cutting the lower end side of the material 22 are arranged in a line, thereby improving the productivity.

In other words, the side cutter 240 and the cam slider 230 are arranged so as to be pushed forward by the cam drive 130 as shown in Fig. 6 (1) so as to cut the lower end front face of the material 22 Step trimming); (2) a structure in which the rear surface of the lower end of the material 22 is cut off (two-step cutting) arranged to be pushed rearward by the cam drive 130; (3) a structure in which the right side of the lower end of the material 22 is cut off (three-step cutting) arranged so as to be pushed rightward by the cam drive 130; And (4) a structure in which the left side of the lower end of the material 22 is cut (four-step cut) by being pushed to the left side by the cam drive 130, 22 can be cut stepwise.

Fig. 7 shows a sectional structure in the case where the front and rear surfaces of the lower end of the material 22 are cut. Fig. 7 (a) is an AA sectional structure in Fig. 6 and Fig. 7 (b) .

Here, it can be seen that the cam slider 230 moving forward and the cam slider 230 moving backward are operated together by using the cam drive 130 provided on each of the right and left sides.

6 is a sectional view of a case where the left side of the lower end of the material 22 is cut and the cam slider 230 is moved to the left by one cam drive 130, 3 and 4, and the illustration thereof is omitted. As shown in FIG. The structure for cutting the right side surface is symmetrical with that for cutting the left side surface.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Addition or deletion of a technique, and limitation of a numerical value are included in the protection scope of the present invention.

110: upper plate
120: punch plate
130: cam drive
140: gage
210: Lower plate
220: die plate
230: cam slider
240: side cutter
250: lift
255: Material mounting groove
11:
22: Material

Claims (5)

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mold for side-cutting a lower end of a material formed in an elliptical shape or a slot shape,
An upper plate 110 mounted on the press machine and descending;
A punch plate 120 coupled to a lower surface of the upper plate 110 to move up and down together;
A cam drive 130 coupled to the lower portion of the punch plate 120 so as to be raised and lowered together therewith;
A gauge 140 coupled to be protruded to a lower portion of the punch plate 120 and inserted into a center portion of the material 22 to be formed when the upper plate 110 is lowered;
A lower plate (210) fixed to the bed of the press to correspond to the upper plate (110);
A die plate 220 coupled to an upper surface of the lower plate 210 so as to correspond to the punch plate 120 and receiving a material 22 which is engaged with the lower surface of the gauge 140;
The other end of the cam slider is slidably coupled to the die plate 220. The other end of the cam slider is moved toward the cam 22, (230); And
And is engaged with the cam slider 230 and is in contact with the inner side of the lower end of the material while being pushed by the cam drive 130 which is located inside the lower end of the lowered material engaged with the gauge 140, A side cutter 240 for cutting the side cutter 240;
Forming a mold for side cutting,
When the cam drive 130 rises, the cam slider 230 and the side cutter 240 are returned to their initial positions by a spring,
A plurality of side cutting dies are arranged in a line,
The side cutter (240) and the cam slider (230)
A structure that is arranged to be pushed forward by the cam drive 130 to cut the lower end front face of the material 22;
A structure that is arranged to be pushed rearward by the cam drive 130 to cut the rear surface of the lower end of the material 22;
A structure that is arranged to be pushed rightward by the cam drive 130 to cut the lower right side surface of the material 22; And
A structure that is arranged to be pushed to the left side by the cam drive 130 to cut the left side surface of the lower end of the material 22;
Are sequentially arranged at predetermined intervals so that the lower end of the continuously fed material (22) is cut in stages. The method of claim 1,
Wherein the lower end of the cam drive (130) or one side of the cam slider (230) is chamfered to form a sloped surface (11). The method of claim 1,
A lift 250 that is disposed to face each other and is elastically supported by a spring and protrudes from an upper surface of the die plate 220 and has a material mounting groove 255 into which an end of the material 22 is inserted;
Both ends of the material 22 are inserted into the material mounting grooves 255 of the respective lifts 250 facing each other,
When the gage 140 is lowered and engaged with the material 22 and then continues to be lowered, the spring for elastically supporting the lift 250 is compressed and the lift 250 is also lowered. The method of claim 1,
The gauge (140)
The upper plate 110 is elastically supported by a spring incorporated in the upper plate 110 and continues to descend while being engaged with the material 22 so that the material 22 is received in the die plate 220, 110) is continuously lowered along the punch plate (120) in proportion to the lowering distance of the upper plate (110). delete

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