KR101066782B1 - Progressive mold, progressive mold for manufacturing optical pickup yoke assembly and method for manufacturing optical pickup yoke assembly - Google Patents

Abstract

The present invention relates to a progressive mold, in particular a progressive mold for manufacturing an optical pickup yoke assembly, and a method for manufacturing an optical pickup yoke assembly using the same.
The progressive mold for manufacturing an optical pick-up yoke assembly which sequentially manufactures an optical pick-up yoke assembly composed of a main yoke and a sub yoke according to the present invention is a progressive upper mold and a progressive lower mold which continuously form a main yoke and a sub yoke in a single sheet. ; A transfer unit for converting the up and down reciprocating motion of the progressive upper die from the progressive lower die to the forward and backward reciprocating motion to transfer the sub yoke from the front side to the rear side of the plate; And a riveting part for fixing the transferred sub yoke to the lower side of the main yoke of the plate and moving the progressive upper die downward to rivet the main yoke and the sub yoke.
The present invention has the effect of improving the productivity and manufacturing cost of the optical pickup yoke assembly.

Description

PROCESSIVE MOLD, PROGRESSIVE MOLD FOR MANUFACTURING OPTICAL PICKUP YOKE ASSEMBLY AND METHOD FOR MANUFACTURING OPTICAL PICKUP YOKE ASSEMBLY}

The present invention relates to a progressive mold, in particular a progressive mold for manufacturing an optical pickup yoke assembly, and a method for manufacturing an optical pickup yoke assembly using the same.

Recently, a digital video disk player (DVD player) has been spotlighted as a digital product that enables convenient storage and playback of high-capacity data, and the demand is exploding. An optical pickup yoke assembly, one of the key components of a DVD player, is shown in FIG. 1 below. As shown in FIG. 1, the optical pickup yoke assembly 10 includes a main yoke 11 and a sub yoke 12 to provide a magnetic portion (not shown) to the yoke portion. It forms a structure to tighten.

On the other hand, the production process of the conventional optical pickup yoke assembly is press-molded the main yoke and the sub yoke in each mold, and each unit is mounted on a hydraulic press jig (ribbed) in the process of riveting (riveting) Since the protrusion is manually inserted into the hole of the main yoke and riveted, there is a problem in that the productivity is lowered and the unit price is increased.

The present invention has been made to solve the above problems, in order to improve the productivity of the optical pickup yoke assembly and lower the unit cost, the main yoke and the sub yoke can be formed at the same time, the optical riveting process can be performed automatically It is an object of the present invention to provide a method for manufacturing a progressive mold and an optical pickup yoke assembly for manufacturing a pickup yoke assembly.

In addition, the present invention is to provide a progressive mold that can improve the productivity and reduce the cost of production in the process of producing a finished product by combining the first member and the second member like the optical pickup yoke assembly. have.

The problem to be solved by the present invention is not limited to the above-mentioned problem, another problem to be solved by the present invention not mentioned here is apparent to those skilled in the art from the following description. Can be understood.

The progressive mold for manufacturing an optical pick-up yoke assembly which sequentially manufactures an optical pick-up yoke assembly composed of a main yoke and a sub yoke according to the present invention is a progressive upper mold and a progressive lower mold which continuously form a main yoke and a sub yoke in a single sheet. ; A transfer unit for converting the up and down reciprocating motion of the progressive upper die from the progressive lower die to the forward and backward reciprocating motion to transfer the sub yoke from the front side to the rear side of the plate; And a riveting part for fixing the transferred sub yoke to the lower side of the main yoke of the plate and moving the progressive upper die downward to rivet the main yoke and the sub yoke.

In addition, the transfer unit of the present invention, the vertical bar is installed on the progressive upper mold and the inclined surface is formed on the front side of the lower, and the progressive lower mold is formed on the upper side of the rear end to form an inclined surface to move forward in conjunction with the downward movement of the vertical bar The bar, an elastic sphere for returning the horizontal bar to the rear by the elastic force when the vertical bar moves upward, a first contact hole for tightly conveying the sub yoke, which is fastened forward and backward by being fastened to the horizontal bar and embedded in the first magnet, and cut from the plate, and the surface of the progressive lower mold And a guide tool for forming a transfer guide line of the sub yoke, wherein the riveting part of the present invention includes a second magnet fixed to the progressive lower die and having a magnetic force stronger than that of the first magnet, and moving backward. The lower part of the sub yoke at the front end of the second contact hole and the second contact hole which receives the sub yoke and tightly fixes it. It is characterized in that it comprises a support which is supported and the inclined surface forward.

The manufacturing method of the optical pickup yoke assembly according to the present invention comprises a first step of successively forming the main yoke and the sub yoke adjacent to one plate using a progressive mold; A second step of transferring the up and down reciprocating motion of the progressive upper die from the progressive lower die to the forward and backward reciprocating motion to transfer the sub yoke from the front side to the rear side of the plate; And a third step of fixing the transferred sub yoke to the lower side of the main yoke of the plate and moving the progressive upper die downward to rivet the main yoke and the sub yoke to complete the optical pickup yoke assembly.

In addition, the progressive mold used in the manufacture of the optical pickup yoke assembly of the present invention, the vertical bar is installed on the progressive upper mold and the inclined surface is formed on the front side of the lower end, and the progressive bar is formed on the upper side of the rear end to form the inclined surface of the vertical bar The horizontal bar moving forward in conjunction with the downward movement, the elastic ball for returning the horizontal bar to the rear by the elastic force when the vertical bar moves upward, and the sub yoke fastened forward and backward by being fastened to the horizontal bar and embedded in the first magnet to be cut from the plate A transfer part including a first contact hole to be formed and a guide tool for forming a transfer guide line of the sub yoke on the surface of the progressive lower mold; And a second contact hole which is fixed to the progressive lower mold and has a second magnet having stronger magnetic force than the first magnet and is in close contact with the sub yoke from the first contact hole moved to the rear, and closes the sub yoke at the front end of the second contact hole. It characterized in that it comprises a riveting portion including a support for supporting the lower portion and the inclined surface formed forward.

Another progressive mold according to the present invention includes: a progressive upper mold and a progressive lower mold which continuously form a first member and a second member adjacent to one plate; A transfer unit for converting the vertical reciprocating motion of the progressive upper mold from the progressive lower mold to the front and rear reciprocating motion to transfer the second member from the front side to the rear side of the plate; And a riveting portion for fixing the conveyed second member to the lower side of the first member of the plate and moving the progressive upper die downward to rivet the first member and the second member.

By the means for solving the above problems, the progressive mold and optical pickup yoke assembly manufacturing method of the optical pickup yoke assembly manufacturing of the present invention, while forming the main yoke and the sub yoke at the same time using a progressive mold, the riveting process Automatically, the finished optical pick up yoke assembly can be produced from the progressive mold without any additional processing. Therefore, the present invention has the effect of improving productivity and reducing the manufacturing cost. In addition, it is possible to stabilize the quality, reduce the defective rate, and to prevent safety accidents and mold breakage.

In addition, by utilizing the progressive mold equipped with the automatic riveting device of the present invention, it is possible to efficiently produce ultra-thin, ultra-light products that can be mounted on a car A / V, home home theater, computer optical disk, digital broadcasting recorder, mobile phone camera, There is an effect that the development of an optical pickup device applicable to a digital camera can be realized.

1 is a view illustrating a general optical pickup yoke assembly.
2 is a side view of a progressive mold for manufacturing an optical pick-up yoke assembly according to an embodiment of the present invention.
3 is a plan view of a progressive upper mold according to an embodiment of the present invention.
4 is a plan view of a progressive lower mold according to an embodiment of the present invention.
5 is a view showing a plate processed from a progressive mold according to an embodiment of the present invention.
6 is an enlarged perspective view illustrating a transfer part and a riveting part formed in a progressive lower mold according to an embodiment of the present invention.
Figure 7 is a schematic diagram showing only the main components of the transfer unit according to an embodiment of the present invention.
8 is a flowchart illustrating a method of manufacturing an optical pickup yoke assembly according to an embodiment of the present invention.
9 is a diagram illustrating a step of riveting the optical pickup yoke assembly according to an embodiment of the present invention.

Specific matters including the problem to be solved, the solution to the problem, and the effects of the present invention as described above are included in the following embodiments and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings.

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

2 to 5 are views for explaining a progressive mold for manufacturing the optical pickup yoke assembly according to an embodiment of the present invention. Specifically, FIG. 2 is a side view of a progressive mold for manufacturing an optical pickup yoke assembly according to an embodiment of the present invention, FIG. 3 is a plan view of a progressive upper mold according to an embodiment of the present invention, and FIG. 4 is an embodiment of the present invention. 5 is a plan view of a progressive lower mold according to an example, and FIG. 5 is a view showing a plate processed from a progressive mold according to an exemplary embodiment of the present invention. 2 to 4, the left side is defined as the front of the progressive mold, and the right side is defined as the rear of the progressive mold.

2 to 5, the progressive mold for manufacturing the optical pickup yoke assembly according to the embodiment of the present invention is composed of a progressive upper mold 100 and a progressive lower mold 200.

The progressive upper die 100 is formed on the lower side of the punch holder 110 and the punch holder 110 that forms the uppermost layer of the progressive upper die 100 and fixes punches for press processing such as punching and bending. A backing plate 120 supporting the punch plate 130, a punch plate 130 formed below the backing plate 120 to support and guide the punch, and a punch plate 130. The stripper backing plate 140 is formed on the lower side and supports the stripper plate 150, and the stripper backing plate 140 is formed on the lower side of the stripper backing plate 140. It includes a stripper plate 150 that pushes downward.

The progressive lower mold 200 forms a top layer of the progressive lower mold 200 and supports a plate 20 on the upper side and a die plate 210 which is transported to the rear, and is formed on the lower side of the die plate 210. A die holder 220 for fixing the plate 210 and an adjustment block 230 formed at the lower side of the die holder 220 and adjusting the position of the progressive lower mold 200 are included.

The progressive mold for manufacturing an optical pick-up yoke assembly according to one embodiment of the present invention having such a configuration gradually transfers the plate 20 on the progressive lower mold 200 to the rear, while the progressive upper mold 100 reciprocates up and down. By movement, press processing, such as piercing, embossing, bending, forging, etc., is performed sequentially, but unlike the prior art, the main yoke 11 and the main yoke 11 The sub yoke 12 is formed adjacent to each other continuously. 2 to 4, the punch, punch holes, and the like of the progressive mold can be sufficiently designed by arranging the punching and bending positions of the main yoke 11 and the sub yoke 12 of FIG. 5.

In addition, the main yoke 11 and the sub yoke 12 are automatically riveted by the transfer part 300 and the riveting part 400 formed at the rear end of the progressive mold to manufacture the finished optical pickup yoke assembly 10. The structure of the transfer unit 300 and the riveting unit 400 will be described in detail with reference to FIGS. 6 and 7.

6 and 7 are views for explaining the transfer portion and the riveting portion of the progressive mold for manufacturing the optical pickup yoke assembly according to an embodiment of the present invention. Specifically, FIG. 6 is an enlarged perspective view of a conveying part and a riveting part formed in the progressive lower mold according to an embodiment of the present invention, and FIG. 7 is a schematic view showing only main components of the conveying part according to an embodiment of the present invention.

6 and 7, the transfer part 300 is installed on the progressive upper mold 100 and is formed on the vertical bar 310 and the progressive lower mold 200 which form an inclined surface at the front side of the lower end and the rear end of the transfer unit 300. The horizontal bar 320 is formed on the upper side to contact the inclined surface of the vertical bar 310 and moves forward in conjunction with the downward movement of the vertical bar 310, and the horizontal bar by the elastic force when the vertical bar 310 moves upward. The elastic sphere 330 for returning the 320 to the rear and the sub yoke 12 that is fastened forward and backward by being fastened to the horizontal bar 320 and embedded in the first magnet (not shown) are cut from the plate 20. And a transfer guide line of the sub yoke 12 on the surface of the progressive lower die 200, that is, the surface of the die play, and the first contact hole 340 to be transferred to the riveting unit 400. It includes a guide sphere 350 to be smoothly transported.

The riveting unit 400 is fixed to the progressive lower die 200 and has a sub yoke 12 from the first contact hole 340 moved backward by a second magnet (not shown) having a stronger magnetic force than the first magnet. The surface of the progressive lower mold 200 by supporting the lower part of the sub yoke 12 at the front end of the second contact hole 410 and the second contact hole 410 fixed to the rebator 400 by being handed over. It includes a support port 420 to secure the rebate space from the inclined surface forward to guide the operation of taking over the sub yoke 12 in the second contact hole (410).

By such a configuration, the transfer part 300 converts the up and down reciprocating motion of the progressive upper mold 100 from the progressive lower mold 200 to the forward and backward reciprocating motion so that the sub yoke 12 is moved from the front side to the rear side at the lower side of the plate 20. Transfer. In addition, the riveting unit 400 fixes the transferred sub yoke 12 to the lower side of the main yoke 11 of the plate 20, and moves the progressive upper die 100 downward to move the main yoke 11 to the sub yoke. It is seated at (12) and riveted. A more detailed description of the manufacturing process of the optical pickup yoke assembly 10 will be described with reference to FIGS. 8 and 9.

8 and 9 are views for explaining a manufacturing process of the optical pickup yoke assembly according to an embodiment of the present invention. Specifically, FIG. 8 is a flowchart illustrating a method of manufacturing the optical pickup yoke assembly according to an embodiment of the present invention, and FIG. 9 illustrates a step of riveting the optical pickup yoke assembly according to an embodiment of the present invention. Drawing.

As shown in Figure 8, the manufacturing method of the optical pickup yoke assembly according to an embodiment of the present invention, the progressive mold for manufacturing the optical pickup yoke assembly according to an embodiment of the present invention described above with reference to Figures 2 to 7 By using, the main yoke and the sub yoke are continuously formed in one plate material (S810).

Next, the vertical upper and lower reciprocating motion of the progressive upper mold is switched from the progressive lower mold to the front and rear reciprocating motion, and the sub yoke is transferred from the front side to the rear side at the lower side of the plate (S820). Specifically, referring to FIG. 9A, the vertical bar 310 moves downward by moving the progressive upper die 100 (not shown in FIG. 9) and the horizontal bar 320 slides forward. do. When the first contact hole 340 fastened to the horizontal bar 320 reaches the point where the front sub yoke 12 is located, the sub yoke 12 is cut from the plate 20 to the sub yoke 12 to be first. It is in close contact with the close contact 340. Thereafter, referring to FIG. 9B, the vertical bar 310 moves upward by moving the progressive upper die 100 upward, and the elastic sphere 330 having the horizontal bar 320 formed of a spring. By sliding backwards. The sub yoke 12 is transferred to the rear riveting unit 400 by moving the first contact hole 340 fastened to the horizontal bar 320 to the point where the second contact hole 410 is located.

Next, the transported sub yoke is fixed to the lower side of the main yoke of the plate, the progressive upper die is moved downward to rivet the main yoke and the sub yoke to complete the optical pickup yoke assembly (S830). Specifically, referring to FIG. 9B, in the process of moving the first contact hole 340 to the point where the second contact hole 410 is located, the sub yoke 12 is disposed on the inclined surface of the support hole 420. Guided. The sub yoke 12 is lifted on the upper surface of the support 420 and is passed from the first contact 340 to the second contact 410. This operation can be performed accurately and easily by using the above-mentioned magnetic force. The second contact hole 410 is in close contact with the sub yoke 12 received and fixed. Thereafter, referring to FIG. 9C, the vertical bar 310 is moved downward by the progressive upper die 100 moving downward, and the horizontal bar 320 is slid forward again. In addition, the main yoke 11 formed on the plate 20 also moves downward to rivet the main yoke 11 and the sub yoke 12 to complete the optical pickup yoke assembly 10. The completed optical pickup yoke assembly 10 is cut from the plate 20 by a later process.

Here, (a) and (c) of FIG. 9 is one process consisting of one operation in which the progressive upper mold 100 moves downward, but it is divided and shown to help the explanation of the manufacturing method.

As described above, in the progressive mold and the optical pickup yoke assembly manufacturing method for manufacturing an optical pick up yoke assembly according to an embodiment of the present invention, a main yoke and a sub yoke are simultaneously formed on a single plate using a progressive mold, and a riveting process is performed. Automatically, the finished optical pick up yoke assembly can be produced from the progressive mold without any additional processing. Therefore, in one embodiment of the present invention, it is possible to improve productivity and reduce manufacturing costs. In addition, the quality can be stabilized, defect rate can be reduced, and safety accidents and mold damage can be prevented.

<Other Embodiments>

(A) The progressive mold of the present invention is not limited only to the manufacture of the optical pick-up yoke assembly, but what should be done if it is composed of the first member and the second member like the configuration of the main yoke and the sub yoke to be riveted to each other? It is okay. That is, the progressive mold according to another embodiment of the present invention, the progressive upper and the progressive lower mold and the progressive upper and lower reciprocating motion of the progressive upper mold before and after the first member and the second member adjacent to successively formed in one plate, the front and rear The transfer part which transfers a 2nd member from the front side to the back side by switching to reciprocating motion, and fixes the conveyed 2nd member to the lower side of the 1st member of a board | plate material, and moves a progressive upper die downward, It can be comprised by including the riveting part which rivets 2 members.

Therefore, by utilizing a progressive mold equipped with an automatic riveting device according to another embodiment of the present invention, it is possible to efficiently produce ultra-thin, ultra-light weight products that can be mounted on a car A / V, home home theater, computer optical disk, digital broadcast recording device, and the like. In addition, development of an optical pickup device applicable to a mobile phone camera and a digital camera can be realized.

(B) The magnetic force difference between the first magnet and the second magnet mentioned in the embodiment of the present invention is such that when the first contact part moves forward again after approaching the second contact part, the sub yoke follows the first contact part. It is sufficient to maintain the position without leaving the second contact portion. In addition, the first magnet is further provided with an adjustment bolt (not shown) to be able to adjust the position back and forth within the hexahedral first contact portion, the self-adhesion to the sub yoke or the magnetic force difference with the second magnet It is possible to adjust arbitrarily.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and their All changes or modifications derived from an equivalent concept should be construed as being included in the scope of the present invention.

10: Optical Pickup Yoke Assembly
11: Main York
12: sub yoke
20: plate
100: Progressive Pictograph
110: Punch Holder
120: backing plate
130: punch plate
140: stripper backing plate
150: stripper plate
200: progressive bottom
210: die plate
220: die holder
230: adjustment block
300: transfer unit
310: vertical bar
320: horizontal bar
330: elastic ball
340: first close contact
350: guide sphere
400: riveting part
410: the second close contact
420: support

Claims (5)

In a progressive mold for manufacturing an optical pick-up yoke assembly that sequentially manufactures an optical pick-up yoke assembly consisting of a main yoke and a sub yoke,
A progressive upper mold and a progressive lower mold which consecutively form the main yoke and the sub yoke in a single plate and adjacent to each other;
A transfer unit configured to transfer the sub yoke from the front side to the rear side of the lower plate by converting the up and down reciprocating motion of the progressive upper mold into the forward and backward reciprocating motion from the progressive lower mold; And
A riveting unit fixing the transferred sub yoke to the lower side of the main yoke of the plate and moving the progressive upper die downward to rivet the main yoke and the sub yoke;
Progressive mold for manufacturing optical pickup yoke assembly comprising a. The method of claim 1,
The transfer unit is installed on the progressive upper mold and a vertical bar to form an inclined surface on the front side of the lower end, and the horizontal bar installed on the progressive lower mold and formed an inclined surface on the upper side of the rear end to move forward in conjunction with the downward movement of the vertical bar and And a first contact hole for tightly conveying the sub-yoke, which is fastened forward and backward by being fastened to the horizontal bar by the elastic bar when the vertical bar is moved upward by the elastic force, and the sub yoke cut by the plate material by incorporating the first magnet. A guide tool for forming a transfer guide line of the sub yoke on the surface of the progressive lower die,
The riveting unit may include a second contact hole fixed to the progressive lower mold and having a second magnet having a stronger magnetic force than the first magnet and having the sub yoke securely received from the first contact hole moved backward; Progressive mold for manufacturing the optical pickup yoke assembly, characterized in that it comprises a support for supporting the lower portion of the sub yoke at the front end of the second contact and the inclined surface formed forward. A first step of successively forming a main yoke and a sub yoke adjacent to one plate using a progressive mold;
A second step of transferring the up and down reciprocating motion of the progressive upper die from the progressive lower die to the forward and backward reciprocating motion to transfer the sub yoke from the front side to the rear side of the plate; And
A third step of fixing the transferred sub yoke to the lower side of the main yoke of the plate and moving the progressive upper die downward to rivet the main yoke and the sub yoke to complete an optical pickup yoke assembly;
Method of manufacturing an optical pickup yoke assembly comprising a. The method of claim 3,
The progressive mold,
A vertical bar installed on the progressive upper mold and forming an inclined surface on the front side of the lower end, a horizontal bar installed on the progressive lower mold and an inclined surface on the upper side of the rear end and moving forward in conjunction with the downward movement of the vertical bar; and the vertical bar. An elastic sphere for returning the horizontal bar to the rear by an elastic force when moving upward, a first contact hole for tightly conveying the sub yoke, which is fastened forward and backward by being fastened to the horizontal bar and embedded in the first magnet, and cut from the plate, and the surface of the progressive lower mold A transfer part including a guide tool to form a transfer guide line of the sub yoke; And
A second contact hole fixed to the progressive lower mold and having a second magnet having stronger magnetic force than the first magnet and having the sub yoke securely received from the first contact hole moved backward; A riveting part supporting a lower portion of the sub yoke and including a support hole formed with an inclined surface forward;
Method of manufacturing an optical pickup yoke assembly comprising a. A progressive upper mold and a progressive lower mold which continuously form a first member and a second member adjacent to one sheet material;
A transfer unit configured to transfer the second member from the front side to the rear side in the lower side of the plate by converting the up and down reciprocating motion of the progressive upper mold into the front and rear reciprocating motion in the progressive lower mold; And
A riveting part for fixing the transferred second member to the lower side of the first member of the plate and moving the progressive upper die downward to rivet the first member and the second member;
Progressive mold comprising.

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