KR101115346B1 - Elastic parts forming apparatus for both ends - Google Patents

Abstract

The present invention relates to an elastic piece molding apparatus at both ends. In the present invention, the die pocket 22 is formed in the lower mold retainer 20 installed in the lower mold holder 10, and a pair of forming cams 24 are installed to face each other. Molding recesses 26 are formed on the upper ends of the forming cams 24, respectively. A lifting holder 30 is installed at the die pocket 22, and the lifting holder 30 is provided with guide legs 32 at both ends of the connecting bridge 33 to be lifted in the die pocket 22. The connecting bridge 33 is provided with a molding punch 34 which is formed so that the molding protrusion 36 corresponding to the molding recess 26 of the molding cam 24 protrudes. The forming cam 24 has an interlocking jaw 28 formed therein, the interlocking jaw 28 being pressed by the cam pressing portion 42 of the driving lifter 38 pressed by the lifting holder 30. The forming cam 24 is rotated about the center of rotation 24 '. The lifting holder 30 is pushed down by the push punch 70 provided on the upper holder 50 side.

Elastic piece, molding, mold, punch

Description

Elastic parts forming apparatus for both ends}

The present invention relates to an elastic piece molding apparatus at both ends, and more particularly, to an apparatus for molding an elastic piece of the same shape at both ends of the base material at the same time.

Products molded using a base metal, which is a metal plate of a predetermined shape, such as a terminal, are generally molded through a device having a metal mold (progressive mold) of a predetermined shape. Such a mold apparatus can finally obtain a product of a desired shape by being processed several times through a series of successive punch and die pairs.

Among such products, there is a case in which the same shape must be formed at both ends. For example, in the so-called F-F (female-female) terminal, the elastic pieces that are in contact with the mating terminals, respectively, are formed at both ends of the base material in the same manner.

In general, in the case of continuous mass production of the same product, such as a progressive mold, the most necessary thing is the productivity of the product. However, in the case of products having the same shape at both ends, if each of them is molded one by one, it takes a lot of time to mold the product, which leads to a problem in that productivity is reduced.

In addition, when the same shape of both ends are sequentially formed, the properties of the molded structures, for example, the elastic pieces, are different, and thus, a problem in that the properties as designed can not be achieved can occur.

In addition, in order to make elastic pieces at both ends of the base material, the parts for molding must be moved on the same plane with respect to the plane in which the base material moves. Therefore, since these parts must be installed to be movable at both ends of the width of the base material in the molding apparatus, there is also a problem that the size of the molding apparatus as a whole.

Accordingly, it is an object of the present invention to provide an elastic piece forming device at both ends which allows a product having the same shape at both ends to be made more quickly and uniformly.

Another object of the present invention is to make the components for forming the elastic pieces in the forming device for forming the elastic pieces on both ends of the base material to be moved in a direction that is substantially orthogonal to the moving plane of the base material.

According to a feature of the present invention for achieving the object as described above, the present invention is a lower mold holder is provided with a lower mold retainer, and is provided above the lower mold holder and is relatively elevated to the lower mold holder and the upper mold retainer is provided The upper mold holder, the push punch installed in the upper mold retainer and the upper and lower lift holders, the molding is installed in the die pocket formed in the lower mold retainer is pressed by the push punch and lowered, the forming part for forming the product is formed at both ends A pair of lifting holders provided with punches and a pair of rotatable centers of the die pocket are installed to face each other. A molding part for forming a product is formed at the top in cooperation with a molding part of the molding punch. Molding cam is formed with an interlocking jaw, and the escape portion for preventing interference with the forming cam length It is formed in pairs at both ends of the incense, and a cam pressing portion interlocking with the interlocking jaw of the forming cam is formed on the lower surface corresponding thereto, and is provided to be liftable on the die pocket to hold the product together with the forming punch. And a driving lifter which is pressed by a forming punch installed in the lifting holder and rotates the forming cam.

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The elevating holder is formed at both ends of the guide leg which is located in the die pocket and is elevated, a connecting bridge is formed to connect the guide leg, the molding punch is fixed to the lower surface of the connecting bridge detachably.

A spacer block is installed on an inner surface of the die pocket, and the spacer block is positioned between the inner surface of the die pocket and the guide leg.

Both ends of the forming punch is a molding protrusion formed to protrude, and the molding portion formed on the upper end of the molding cam is a molding recess formed to be recessed.

In the both ends elastic piece molding apparatus which has such a structure, the following effects can be acquired.

First, in the present invention, since the elastic pieces having the same shape are formed at both ends of the product at the same time, the time for manufacturing the product is reduced by that much, and thus the product productivity can be increased.

In the present invention, since the elastic pieces of the same shape, in particular, the forming cam is operated at the same time to produce each elastic piece at the same time, the characteristics of the elastic pieces on both sides can be made the same, there is also an effect of improving the quality of the product.

In addition, in the present invention, the components for forming the elastic pieces at both ends of the base material are mainly configured to move in a direction orthogonal to the plane in which the base material moves, so that the width of the molding apparatus may be relatively reduced.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the two-end elastic piece molding apparatus according to the present invention will be described in detail.

1 is a schematic cross-sectional view of a preferred embodiment of the two-end elastic piece molding apparatus according to the present invention, Figure 2 is a front view of the forming cam constituting the embodiment of the present invention, Figure 3 is an embodiment of the present invention The constituting drive lifter is shown in a plan view and a front view.

As shown in these figures, the backing plate 12 and the lower mold retainer 20 are mounted on the lower mold holder 10. The backing plate 12 and the lower mold retainer 20 are fastened together on the lower mold holder 10. The backing plate 12 may be considered to be substantially part of the lower mold retainer 20.

The lower mold retainer 20 is formed with a die pocket 22. The die pocket 22 is formed through the lower mold retainer 20, and various parts are installed therein.

A pair of forming cams 24 are installed in the die pocket 22. The forming cam 24 is installed to face each other, a pair of the center of rotation (24 ') by the drive lifter 38 to be described below as the main molding portion 26 is moved in a direction closer to each other The elastic pieces at both ends of the base material are molded at the same time.

The configuration of the forming cam 24 is shown in Figure 2, the forming recess 26 for forming the elastic piece on the upper end, the lower linking jaw 28 is formed on one side. The linkage jaw 28 is a portion for linkage with the drive lifter 38 to be described below.

The forming cam 24 is installed in the die pocket 22 to face each other, that is, the forming recess 26 and the interlocking jaw 28 to face each other. In addition, the forming cam 24 receives the elastic force in a direction away from each other by the elastic member (not shown) so that the rotation center 24 ′ is not operated by the driving lifter 38. The molding recess 26 is rotated in a direction away from each other. For example, a compression coil spring may be provided between the forming cams 24, and both ends of the compression coil springs may be connected to the forming cams 24, respectively. Alternatively, both ends of the tension coil springs may be fixed to inner surfaces of the forming cam 24 and the die pocket 22, respectively.

The lifting holder 30 is installed in the die pocket 22 so as to be liftable. The lifting holder 30 is composed of guide legs 32 at both ends and a connecting bridge 33 connecting the guide legs 32. The guide legs 32 extend in parallel from both ends of the connecting bridge 33 in the vertical direction. The guide legs 32 are located at both ends of the die pocket 22. The connecting bridge 33 is located above the die pocket 22.

The guide leg 32 is supported by a lift pin supported by an elastic member (not shown). Accordingly, when the push punch 70 presses the lifting holder 30 to be described below, the lifting holder 30 descends while overcoming the elastic force of the elastic member supporting the lift pin, and the push punch 70 If it is not pressed, it will rise to its original position.

The forming punch 34 is installed on the middle lower surface of the connecting bridge 33 of the elevating holder 30. The forming punch 34 is formed in both ends of the forming punch 34 by forming the elastic piece on both ends of the base material in cooperation with the forming cam 24. Accordingly, the forming protrusions 36 are respectively located corresponding to the forming recesses 26 of the forming cam 24. The forming punch 34 may be fastened using a bolt to the connection bridge 33 of the lifting holder 30.

The die pocket 22 also has a drive lifter 38. The driving lifter 38 is installed between the forming cams 24 so as not to interfere with the forming cams 24. As shown in FIG. 3, the drive lifter 38 has an escape portion 40 formed at both ends thereof in the longitudinal direction. The escaping portion 40 serves to make the forming cam 24 positioned and operated as a portion that is made smaller in width than other portions of the driving lifter 38. For reference, there are two pairs of sheaths 40 in the drawing, which is for driving a pair of shaping cams 24 in one drive lifter 38 at the same time. This is because the work of making the elastic piece can be divided into two times, primary molding and adjust molding. Therefore, when the elastic piece is made in one operation, the drive lifter 38 may be designed so that only a pair of the cover parts 40 are provided.

The cam pressing portion 42 is formed to protrude a predetermined length on the lower surface of the drive lifter 38 formed with the escape portion 40. The tip of the cam pressing portion 42 is pressed against the interlocking jaw 28 of the forming cam 24. The cam pressing portion 42 rotates the forming cam 24 while being caught by the linkage jaw 28 of the forming cam 24 when the driving lifter 38 is pushed down by the push punch 70 to be described below. Let's go.

The drive lifter 38 is supported by a lifter pin supported by a spring (not shown), so that the push punch 70 does not press the lifting holder 30 anymore so as to be raised to its original state by the restoring force of the spring. do.

The guide leg 32 of the lifting holder 30 is supported by the lift pin 44 and installed in the die pocket 22. The lift pin 44 is installed through the backing plate 12 and the lower mold holder 10 and is supported by a spring 46. Reference numeral 46 'is a set screw for preventing the spring 46 from falling out in the through hole of the lower mold holder 10.

A spacer block 48 is installed on an inner surface of the die pocket 22, and the spacer block 48 is in contact with the guide leg 32 of the lifting holder 30. The spacer block 48 may be worn by the lifting and lowering of the guide leg 32. In this case, the spacer block 48 may be replaced.

The upper mold holder 50 is provided on the lower mold holder 10. The upper holder 50 is relative to the lower holder 10 by a separate device. Generally, the upper mold holder 50 moves up and down while being in an upper gravity direction with respect to the lower mold holder 10.

A backing plate 52 and an upper retainer 60 are installed on the lower surface of the upper holder 50. The backing plate 52 and the upper retainer 60 are mounted together on the upper holder 50. In fact, the backing plate 52 may be regarded as part of the upper retainer 60.

The push retainer 60 is installed at the upper retainer 60 at a position corresponding to the lifting holder 30 of the lower retainer 20. The push punch 70 presses the elevating holder 30 so that the elevating holder 30 descends so that the elastic pieces are formed at both ends of the base material by the forming punch 34 and the forming cam 24.

It will be described in detail below the operation of the two-end elastic piece molding apparatus according to the present invention having the configuration as described above.

Figure 4 is shown in sequence the process of molding the elastic piece in the present invention. First, in (a), the push punch 70 is moved downward by the lower side of the upper holder 50 to be in contact with the lifting holder 30. Of course, in this state, the lifting holder 30 and the driving lifter 38 are in the position moved upward. In addition, the forming punch 34 is not yet in close contact with the base material on the drive lifter 38. That is, in this state, the base material can be transferred.

In the state of (b), the push punch 70 presses the elevating holder 30 so that the forming punch 34 in the elevating holder 30 closely adheres to the driving material 38. At this time, since the driving lifter 38 is supported by the spring, even if the molding punch 34 presses the base material, it is in close contact with the base material without deformation.

If the push punch 70 is continuously lowered, the push punch 70 is in the state of (c). In this state, the tip of the cam pressing portion 42 of the driving lifter 38 is connected to the interlocking jaw 28 of the forming cam 24. ) Is in a state of being walked on. In this state, the base material is in close contact with and fixed between the forming punch 34 and the drive lifter 38.

When the push punch 70 is further lowered in the state of FIG. 4C, the driving lifter 38 is also lowered while being pressed by the lifting holder 30 and the forming punch 34, and the driving lifter Cam pressing portion 42 of 38 presses the interlocking jaw 28 of the forming cam 24, the rotation of the forming cam 24 is started.

Therefore, the forming recess 26 of the forming cam 24 and the forming protrusion 36 of the forming punch 34 are adjacent to each other, and molding of the base material proceeds. The state of FIG. 4D is a state in which shaping | molding with respect to an elastic piece is performed.

When the upper holder 50 starts to rise again after the lowering, the operation described above is reversed, and the forming cam 24, the drive lifter 38 and the lifting holder 30 each support an elastic member. It is returned to the original position by the restoring force of, and the base metal is moved by one pitch so that each work is performed at the next position.

The scope of the present invention is not limited to the embodiments described above, but is defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self evident.

For example, in the illustrated embodiment, forming protrusions 36 are formed at both ends of the forming punch 34, and forming recesses 26 are formed at the forming cam 24, but these are formed at opposite positions. Can be. Therefore, these may be referred to as molded parts without being divided into molded protrusions and molded recesses.

1 is a schematic cross-sectional view showing the configuration of a preferred embodiment of a two-end elastic piece molding apparatus according to the present invention.

Figure 2 is a front view showing a forming cam constituting an embodiment of the present invention.

3 is a plan view and a front view showing the configuration of a drive lifter constituting an embodiment of the present invention.

Figure 4 is an operating state showing sequentially the process of operating the molding apparatus of the present invention.

Explanation of symbols on the main parts of the drawings

10: Lower holder 12: Backing plate

20: Lower retainer 22: Die pocket

24: forming cam 26: forming the main part

28: interlocking jaw 30: lifting holder

32: guide leg 33: connecting bridge

34: forming punch 36: forming protrusion

38: drive lifter 40: hide

42: cam press 44: lift pin

46: spring 46 ': set screw

48: spacer block 50: upper holder

52: backing plate 60: upper retainer

70: push punch

Claims (5)

A lower mold holder provided with a lower mold retainer, An upper mold holder provided above the lower mold holder and being relatively lifted with respect to the lower mold holder and provided with an upper mold retainer; A push punch installed in the upper retainer and lifting with the upper holder; An elevating holder which is installed in a die pocket formed in the lower mold retainer and is pushed down by the push punch and provided with a forming punch formed at both ends of a forming part for forming a product; A pair of cams rotatably installed around the center of rotation of the die pocket, the forming cam for forming a product by cooperating with the forming portion of the forming punch at the top and an interlocking jaw formed at the bottom; , To prevent the interference with the forming cam is formed in pairs on both ends in the longitudinal direction, the cam pressing portion interlocking with the interlocking jaw of the forming cam is formed on the lower surface corresponding to this, and can be lifted on the die pocket And a drive lifter installed to grip the product together with the molding punch and being pushed by the molding punch installed in the lifting holder to rotate the molding cam. delete According to claim 1, The elevating holder is formed on both ends of the guide leg to be raised and lowered in the die pocket, the connecting bridge is formed to connect the guide leg, so that the forming punch on the lower surface of the connecting bridge detachable Both ends of the elastic piece forming apparatus characterized in that the fixed. The apparatus of claim 3, wherein a spacer block is installed on an inner surface of the die pocket, and the spacer block is positioned between an inner surface of the die pocket and the guide leg. 5. The apparatus as claimed in claim 4, wherein a molding part is formed to protrude on both ends of the molding punch, and a molding part formed on an upper end of the molding cam is a molding recess formed to be recessed.

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