KR20030008230A - Progressive die for Manufacturing Computer Pickup Frame and Striplayout thereof - Google Patents

Abstract

PURPOSE: A progressive dies for manufacturing a computer pickup frame supporting pickups used as parts of a computer is provided, and a strip layout of the progressive dies is provided. CONSTITUTION: In a progressive dies comprising a lower die part(10) in which a pair of guide rails(12), side cut die holes(13), pilot die holes(14), stoppers(15) and guide lifter pins(16) are respectively formed on a die plate(10a) in a work proceeding direction; and an upper die part(20) in which guide escape grooves(22), side cut punches(23) and pilots(24) are respectively formed on a striper plate(20a) in a work proceeding direction so that the upper die part(20) is oppositely directed to the lower die part(10), the progressive dies for manufacturing a computer pickup frame comprises forging die blocks(18) which are installed between the guide rails(12) of the lower die part(10); and forging punches(25) which are formed at a position of the upper die part(20) oppositely directed to the forging die blocks(18), wherein a similarly shaped part to a shape to be forged is formed on the lower surface of the forging punches(25), and an air hole is perforated on the forging punches(25).

Description

Progressive die for manufacturing computer pickup frame and striplayout

TECHNICAL FIELD The present invention relates to a progressive mold for making a frame for supporting pick up used as a component of a computer, and a strip layout thereof.

Recently, in line with the trend toward miniaturization and high speed of computers, hardware components are gradually being made smaller, and pickups that read C.D ROM are no exception.

The pickup, which is installed inside the computer's hardware, is installed on the guide drive that guides the CD-ROM inside the hardware, and reads the CD-ROM that rotates at high speed when the CD-ROM is guided in the guide drive. .

The pickup is largely composed of a lens that reads the C.D ROM, a magnet, and a frame that supports and mounts them therein.

Herein, the frame allows the lens and the magnet to be seated therein. When the inner space of the frame having the same cross-sectional area is increased as large as possible, the frame and the magnet may be seated therein while the overall size of the frame is reduced. Therefore, one way to downsize the pickup is to increase the space efficiency by increasing the internal space of the frame on which the lens and the magnet are seated.

The manufacture of frames for computer pickup is generally made of semi-progressive molds. In general progressive molds, a single material is continuously processed through a stepwise process, but a process of forging a material has not been developed yet.

For reference, as shown in FIG. 8, the conventional mold for manufacturing a computer pickup frame includes a lower mold 10 and an upper mold 20.

The lower die 10 has a die plate 10a at its uppermost portion, a lower die backing plate 10b for supporting the lower die plate, and a lower die die holder 10c at the lower portion of the lower die backing plate.

Here, the upper surface of the die plate 10a has a pair of guide rails 12, a side cut die hole 13, a pilot piercing die hole 14, a stopper 15, a guide lifter pin ( 16) and the like.

A stripper plate 20a is formed at the bottom of the upper die portion 20, and the upper die backing plate 20b, the punch plate 20c, the punching backing plate 20d and the punch holder 20e are formed at the upper portion thereof. It is formed sequentially.

Here, the lower surface of the stripper plate 20a is provided with a pair of escape holes 22, a side cut punch 23, a pilot 24, and the like, respectively.

9 illustrates manufacturing a frame with the conventional progressive mold as described above. When the material 30 enters the mold by the guide rail 12, the material 30 is processed by stages by a continuous operation. In the stage, a frame 31 having a shape as shown in FIG. 10 is manufactured.

9, the material 30 is semi-notched in the first stage when the material 30 enters between the pair of guide rails 12.

In the second stage, the material 30 undergoes circular piercing.

In the third stage, the material 30 is semi-notched for bending.

In the fourth stage, cold forging is performed at the central part, and the fifth stage is subjected to the first forging for the main processing in the children, the sixth stage, the second forging in the seventh stage, and the side cutting in the eighth stage. Side cutting must be done after forging. The frame is finally manufactured between the ninth stage and the seventeenth stage through a process such as semi-notching, piercing, trimming, and bending. On the other hand, the guide lifter 16 is installed in the lower mold portion has a structure that is up / down (up / down), when the upper upper portion is down, the guide lifter 16 is also down and down the material (30) ) Close to the bottom of the lower mold, and when the upper mold is up, the guide lifter 16 is also up while the material 30 is spaced apart from the bottom of the lower mold to smoothly move in the direction of travel.

The state in which the material 30 is guided to the guide lifter 16 will be described in more detail. Both side portions of the material 30 are guided to the guide grooves 16a of the guide lifter 16. And the interval pilots 24 'installed at equal intervals on the stripper plate 20a (see FIG. 8) serve to determine the exact feed pitch of the material 30 at the time of stamping.

As shown in FIG. 10, the frame manufactured through the above steps may not increase the internal space efficiency because its thickness is still the same as the thickness of the material before manufacture. Therefore, the frame manufactured by the conventional mold can not increase the space efficiency, there is a problem that the size of the pickup can not be reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide a strip layout of a progressive mold for producing a computer pickup frame, which can reduce the size of the pickup by increasing the internal space efficiency of the frame having the same cross-sectional area by forging the pickup frame among the accessories of the computer. have.

An object of the present invention, by forming a shape similar to the shape to be forged on the lower surface of the forging punch, to increase the molding effect, to perform side cutting after the forging stage and to improve the angle and flatness of the bending Semi-notching processing by stage provides strip layout of progressive mold for computer pickup frame manufacturing.

SUMMARY OF THE INVENTION An object of the present invention is to provide a progressive mold for producing a computer pickup frame capable of releasing heat and pressure generated when punching by drilling an air hole in a forging punch.

1 is an exploded perspective view showing an upper mold and a lower mold of a progressive mold according to the present invention;

2 is a plan view showing a die plate of the progressive mold according to the present invention;

3 is a plan view showing a stripper plate of the progressive mold according to the present invention;

4 is a perspective view showing a punch for forging a progressive mold according to the present invention;

5 is a cross-sectional view showing the fixing structure of the forging punch and forging die block of the progressive mold according to the present invention;

6 is a perspective view showing a computer pickup frame manufactured by a progressive mold according to the present invention;

7 is a cross-sectional view showing a state of use of the frame produced by the present invention,

8 is an exploded perspective view showing an upper mold and a lower mold of a conventional progressive mold;

9 is a perspective view showing a strip layout processing stage of a conventional progressive mold;

10 is a perspective view showing a computer pickup frame manufactured by a conventional progressive mold.

<Explanation of symbols for the main parts of the drawings>

10: lower part, 10a: die plate,

10b: Lower backing plate, 10c: Die holder,

12: guide rail, 13: side cut die hole,

14: Piercing die hole for pilot, 15: Stopper,

16: guide lifter pin, 18: forging die block,

20: upper part, 20a: stripper plate,

20b: upper backing plate, 20c: punch plate,

20d: Punch backing plate, 20e: Punch holder,

22: guide escape groove, 23: side cut punch,

24: pilot, 25: forging punch,

25a: When punched, 25b: air vent,

30: material, 31: frame.

Hereinafter, the technical configuration of the present invention in detail.

The progressive mold for producing a computer pickup frame according to the present invention includes: a lower die portion which forms a pair of guide rails, side cutting grooves, pilot piercings, a stopper, and guide lifter pins in a lower die plate in a working progress direction; In a progressive mold composed of a guide groove, a side cutter and a pilot forming a side cutter and a pilot in a working direction so as to face the lower die, a forging block may be used to forge a material between the guide rails of the lower die. The upper die portion is provided with a forging punch at a position opposite to the forging block as a basic configuration.

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

In the embodiment of the present invention, as shown in Figure 1, the lower die 10 has a die plate (10a), the lower die backing plate (10b) for supporting the lower die plate is disposed, the die holder 10c Is formed.

Here, the upper surface of the die plate 10a has a pair of guide rails 12, a side cut die hole 13, a pilot piercing die hole 14, a stopper 15, and a guide lifter pin 16 in the working progress direction. ), Each of which has a forging die block 18 so as to forge a material between a pair of guide rails 12. Then, four guide posts 11 for coupling the upper die 20 and the lower die are provided at four corners of the die holder 10c.

The upper die portion 20 is a structure portion facing the lower die portion 10, and as shown in FIG. 1, a stripper plate 20a is formed at the lowermost portion, and the upper die backing plate 20b and the punch plate 20c are disposed thereon. ), The punch backing plate 20d and the punch holder 20e are sequentially formed.

Here, a pair of guide escape grooves 22, side cutters 23 and pilots 24 are formed on the bottom surface of the stripper plate 20a, in particular, between the pair of guide escape grooves 22. The forging punch 25 is provided to perform the forging process at a position corresponding to the rough die block 18. The punch holder 20e is formed with a guide bushing 21 coupled to the guide post 11.

That is, according to the present invention, unlike the conventional progressive mold which could not perform the forging process, the lower die 10 is provided with a forging die block 18 so as to perform the forging process, and the upper die 20 It is characterized by including a punch 25 for forging.

As described above, the progressive mold of the present invention includes a forging die block 18 and a forging punch 25 to perform a forging process, thereby forging a material specific portion of the pickup frame to reduce its thickness. Internal space efficiency can be increased.

In addition, the forging process may be performed once or may be performed twice or more. In this embodiment, the forging step can be performed twice, and the forging punch 25 and the corresponding forging die block 18 are provided with two pairs. Forging performed in the present invention is forging cold for preventing deformation of the material.

4 shows a forging punch 25 according to the present invention. On the lower end surface of the forging punch 25, a shape portion 25a similar to the shape to be forged is formed. Forming effect can be increased by forming such a shape part 25a in the punch lower surface. It is preferable that the size of the shape portion 25a be about twice as large as the actual shape to be forged.

In addition, it is preferable to form the air holes 25b to relieve heat and pressure generated when the forging operation is performed. Therefore, heat and pressure generated when punching the material can be released through the air hole 25b.

Figure 5 shows the installed structure of the forging punch and forging die block. The upper part of the forging punch 25 is fixed to the punch plate 20c, and the upper end surface is supported by the punch backing plate 20d. In addition, the forging die block 18 is inserted into the die plate 10a, and its upper surface is flush with the upper surface of the die plate, and its lower surface is fixed to the lower backing plate 10b. On the other hand, the air holes 19 and 26 are respectively provided in the lower backing plate 10b holding the lower surface of the forging die block 18 and the punch backing plate 20d supporting the upper surface of the forging punch 25. ), The air pressure at the time of forging can be relieved to some extent. Therefore, when forging by this invention, the thickness of a raw material can be made thin by hitting the raw material 30 mounted on the die block 18 with the forging punch 25. FIG.

6 and 7 show a computer pickup frame 31 made of the mold of the present invention, where a portion 31a of the lower surface is forged and thinned. The forged portion 31a is about half thinner than the unforged portion. Therefore, the internal space of the frame 31 can be made larger, and the frame 31 itself can be made smaller, and the magnet 32 and the lens 33 placed therein can be more easily installed. .

On the other hand, the method for manufacturing the frame 31 by the strip layout of the progressive mold of the present invention is a forging process is added, the forging stage must be performed before the side cutting, the conventional method except that the forging must be semi-notching before Since it is the same as, the method of manufacturing the frame in the present invention is omitted.

As described above, the progressive mold for manufacturing the pickup frame includes a forging die block 18 on the upper surface of the lower die portion, and a forging punch 25 on the upper die portion 20 to produce the pickup frame. By forging a specific part of the material to make the thickness thinner, it is possible to increase the internal space efficiency of the frame, thereby miniaturizing the frame or parts placed on the frame.

In addition, the present invention can increase the forging effect by forming a shape portion 25a similar to the shape to be forged on the bottom surface of the forging punch 25, and the air hole 25a is formed in the forging punch 25. By drilling, heat and pressure generated when punching can be eliminated through the air hole 25b.

Claims (4)

A pair of guide rails 12, a side cut die hole 13, a pilot die hole 14, a stopper 15, and a guide lifter pin 16 are respectively formed in the die plate 10a in the working progress direction. A lower mold 10; Consists of a guide escape groove 22, a side cut punch 23 and a pilot 24 to the stripper plate 20a in the working direction so as to face the lower die 10, respectively. In the progressive mold that becomes The forging die block 18 is provided between the guide rails 12 of the lower die portion, and the upper die portion 20 is provided with a forging punch 25 at a position opposite to the forging die block 18. A progressive mold for producing a computer pickup frame, characterized by the above-mentioned. The method of claim 1, Progressive mold for producing a computer pickup frame, characterized in that to form a shape portion (25a) similar to the shape to be forged on the bottom surface of the forging punch (25). The method according to claim 1 or 2, Progressive mold for producing a computer pickup frame, characterized in that forging the air hole (25a) to the forging punch (25). The progressive mold of claim 1, wherein a computer pickup frame is manufactured using the progressive mold of claim 1, but semi-notching before forging, side cutting after forging, and a relief groove for a pickup frame for processing a relief groove on a material.