KR101149429B1 - Stamper holder for injection molding of LGP for LED TV - Google Patents

Abstract

The present invention relates to a stamper fixing holder for an LED TV light guide plate injection mold, and more particularly, to a light guide plate injection mold stamper for fixing a stamper installed in a core of a mold during injection molding of a light guide plate applied to an LED TV for about 32 to 100 inches. In the fixed holder, the stamper fixing holder has a first pressing portion for pressing the edge of the stamper on the upper surface, a first screw hole through which a screw is inserted at one end thereof, and a second coupling portion of the second holder at the other end thereof. A first holder having a first coupling portion coupled to the first holder, a second pressing portion for pressing the edge surface of the stamper on the upper surface, a second screw hole through which a screw is inserted at one end thereof, And a second holder having a second coupling portion coupled to the first coupling portion, wherein the first coupling portion includes a first projection portion inserted into the second coupling portion, a first step formed on the first projection portion, 1 is formed in the lower part of the protrusion, screw is inserted And a second step with a first screw groove, wherein the second coupling part comprises: a first recess for accommodating the first protrusion inwardly; a first protrusion end in surface contact with the first step; And a second protruding end having a third screw hole through which the screw is inserted and penetrated to fix the screw in the first screw groove, the surface of the second step being in contact with the second step. The length of the first holder is shorter in the inner direction, the first projection end is shorter in the outward direction of the second holder than the second projection end, characterized in that the stamper fixing holder for injection mold will be. According to the present invention, since the assembly and disassembly of the stamper installed on the upper and lower core surfaces of the mold is easy, the mass productivity of the product is increased, and the injection pressure is firmly coupled between the joints between the fixing holders fixing the stamper. There is an effect of suppressing the occurrence of burr of the resin. In particular, there is an effect of suppressing the generation of burrs in the gate portion of the injection mold having a high injection pressure.

Mold, Core, Light Guide Plate, Stamper, Injection

Description

Stamper holder for injection molding of LG TV light guide plate {Stamper holder for injection molding of LGP for LED TV}

The present invention relates to a stamper fixing holder for an LED TV light guide plate injection mold, and in particular, in fixing a stamper installed on a core surface of a mold for injection molding a light guide plate for an LED TV for about 32 to 100 inches, between stamper fixing holders. The present invention relates to a stamper fixing holder for an LED TV light guide plate injection mold capable of firmly joining joints to prevent burr generation of resin due to injection pressure.

In general, the mold consists of an upper plate (fixed part) and a lower plate (moving part) which are symmetrical with each other. At this time, an upper core (Core) is located on the upper plate of the mold, and a lower core (Core) is located on the lower plate, and the stem, which is a plate made of thin SUS (Steel Use Stainless) material having a predetermined pattern, is provided on the upper core and Hako. Stamper is attached.

Here, when the plastic is injected in a molten state through a hot runner that heats the flow path from the injection machine nozzle of the upper plate of the mold to the cavity to smooth the flow of raw materials, The product is molded between the upper core and the upper core, and the product is ejected by pushing out the finished product by using an ejector pin.

1 to 3 is a perspective view showing a stamper fixing holder for a conventional LED TV light guide plate injection mold. 1 to 3, the conventional LED TV LGP injection mold stamper fixing holder 1 is a stem installed in the core of the mold 5 during injection molding of a LGP applied to an LED TV for about 32 to 100 inches. At least two split fixing holders 1 for fixing the stapler 4 to the mold 5 are located on the edge surface of the mold 5.

At this time, the fixing holder (1) is continuously positioned in the longitudinal direction on the edge surface of the mold (5), the pressing portion for pressing the upper edge surface of the stamper (4) on the upper surface of the fixing holder (1) (2) is formed in the longitudinal direction in which the fixed holder 1 is provided.

Conventionally, in the method of fixing the stamper (4) to the mold, the screw hole (3) is formed at both ends or at least three or more of the fixing holder (1) when assembling the screw for fixing the stamper (4) to the mold The stamper was assembled to the mold 5 using this state.

In addition, each of the divided fixed holder (1) having the configuration as described above was installed in the mold (5), which is a gap between each divided fixed holder (1) when a high injection pressure occurs in the injection mold As a resin is injected, there was a problem that a burr occurs.

On the other hand, a very high injection pressure is generated in the gate portion of the mold (5), the resin is also molded in the screw hole (3) of the fixed holder (1), in particular screw assembly formed in the fixed holder (1) Since the resin is injected by the injection pressure in the screw hole 3 part, and the product depends on the upper plate (fixing part) of the mold 5, there is a problem when taking out the product, and the screw assembly screw hole 3 of the fixing holder 1 Problems occur when disassembling and assembling the mold due to the resin.

The problem of the present invention devised to solve the above-described problems, mass production of the product is easy because the assembly and disassembly of the stamper installed in the core of the mold for injection molding the light guide plate for LED TV for about 32 to 100 inches It is to provide a stamper fixing holder for LED TV light guide plate injection mold that can increase, and because the joint between the fixing holder for fixing the stamper is firmly coupled, which can suppress the occurrence of burrs of the resin due to the injection pressure.

In order to solve the above problems, the present invention, in the light guide plate injection mold stamper fixing holder for fixing the stamper installed in the core of the mold during injection molding of the light guide plate applied to the LED TV for about 32 to 100 inches, the stem Fur fixed holder is the first pressing portion for pressing the edge surface of the stamper on the upper surface, the first screw hole through which the screw is inserted through one end, and the other end is coupled to the second coupling portion of the second holder A first holder having a first coupling portion and a second pressing portion for pressing the edge surface of the stamper on the upper surface, a second screw hole through which a screw is inserted at one end thereof, and a first coupling of the first holder at the other end thereof And a second holder having a second coupling portion coupled to the portion, wherein the first coupling portion includes a first projection portion inserted into the second coupling portion, a first stepped portion formed on the first projection portion, and It is formed in the lower part of the first projection and the screw And a second stepped portion having a first threaded groove to be introduced, wherein the second coupling portion includes a first recessed portion for accommodating the first protrusion inwardly and a surface contacting the first stepped portion; And a second protrusion having a protrusion having a third screw hole through which the screw is inserted to penetrate the surface of the second screw, and the screw is inserted to fix the screw in the first screw groove. The first step may be shorter in the inward direction of the first holder than the second step, and the first protrusion may be shorter in the outward direction of the second holder than the second protrusion. .

It is installed between the first coupling portion of the first holder and the second coupling portion of the second holder, a third pressing portion for pressing the edge surface of the stamper is formed on the upper surface, one end of the first protrusion A second recess for accommodating the second recess, a third protruding end in surface contact with the first stepped jaw, and a fourth through which a screw is inserted through the surface in contact with the second stepped jaw to fix the screw in the first screw groove. A third protrusion including a fourth protrusion having a screw hole and a second protrusion inserted into an inner side of the first recess of the second coupling portion at the other end, and formed on an upper portion of the second protrusion; A fourth step with a third step which is in surface contact with the protruding end, and a second screw groove which is formed under the second protrusion and which is in surface contact with the second step and which is penetrated through the third screw hole. Further comprising a third holder including a fourth coupling portion comprising a It characterized.

The present invention is easy to assemble and disassemble the stamper installed in the core of the mold during the injection mold of the light guide plate applied to the LED TV for about 32 to 100 inches, the mass productivity of the product is increased, the fixing holder for fixing the stamper Since the joints of the liver are firmly bonded, there is an effect of suppressing burr generation of the resin due to the injection pressure. In particular, there is an effect of suppressing the generation of burrs in the gate portion of the injection mold having a high injection pressure.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the stamper fixing holder for LED TV light guide plate injection mold according to the present invention.

Figure 4 is a perspective view showing a stamper fixing holder for LED TV light guide plate injection mold according to an embodiment of the present invention.

First embodiment

5 is an exploded perspective view showing a stamper fixing holder for an LED TV light guide plate injection mold according to a first embodiment of the present invention.

Referring to FIG. 5, the stamper fixing holder for the LED TV LGP injection mold according to the first exemplary embodiment of the present invention has a structure including a first holder 100 and a second holder 200. As follows.

First, the LGP receives light emitted from a lamp using a transparent acrylic panel made of a resin called polymethylmethacrylate (PMMA), and light is spread over the entire area through a pattern having a predetermined area and shape deposited on the acrylic surface. It serves to distribute uniformly, and refers to the product having the best physical properties among acrylics.

The stamper is applied to an injection mold of a light guide panel (LGP) for an LED TV. The light guide plate is applied to an LED TV by attaching an LED after injecting a product to a screen used for the LED TV. .

At this time, the stamper fixing holder is a light guide plate injection mold fixing holder for fixing the stamper installed in the core for the mold during injection molding of the light guide plate applied to the LED TV for about 32 to 100 inches.

The first holder 100 includes a first pressing part 110, a first screw hole 120, and a first coupling part 130. The first pressing unit 110 is formed on the upper surface of the first holder 100 to press the upper edge surface of the stamper. At this time, the first pressing unit 110 is preferably formed in the longitudinal direction of the first holder (100).

The first screw hole 120 is formed at one end of the first holder 100 and a screw is inserted therethrough. At this time, the screw is inserted into the first screw hole 120 and screwed into the mold, so that the body of the first holder 100 is firmly fixed to the mold.

The first coupling part 130 is formed at the other end of the first holder 100 and is coupled to the second coupling part 230 of the second holder 200 to be described later.

The second holder 200 includes a second pressing part 210, a second screw hole 220, and a second coupling part 230. The second pressing unit 210 is formed on the upper surface of the second holder 200 and pressurizes the upper edge surface of the stamper. At this time, the second pressing unit 210 is preferably formed in the longitudinal direction of the second holder (200).

The second screw hole 220 is formed at one end of the second holder 200 and a screw is inserted therethrough. At this time, the screw is inserted into the second screw hole 220 and screwed into the mold, so that the body of the second holder 200 is firmly fixed to the mold.

The second coupling part 230 is formed at the other end of the second holder 200 and is coupled to the first coupling part 130 of the first holder 100.

Here, the first coupling portion 130 includes a first protrusion 131, a first step 132, and a first screw groove (not shown), and the second coupling portion 230 includes a first recess portion. 231, and a first protrusion 232 and a second protrusion 233, wherein the first protrusion 131 is formed of the first recess 231 of the second coupling part 230. Sliding is inserted into the surface contact inward.

The first step 132 is formed on an upper portion of the first protrusion 131, and a first protrusion end formed on an upper portion of the second coupling portion 230, that is, an upper end of the first recess 231. 232) and sliding surface contact with each other.

The second step 133 has a first screw groove (not shown) formed at a lower portion of the first protrusion 131 and into which a screw is inserted, and a second protrusion end of the second coupling portion 230. 233 is in sliding contact with the second step 133, the screw is inserted into the third screw hole (2331) by the third screw hole (2331) formed in the second projection 233 and the The screw is coupled to the first screw groove (not shown).

That is, while the screw penetrates through the third screw hole 2331 and is screwed into the first screw groove (not shown), the first coupling part 130 and the second coupling part 230 are screwed together. Will be. Therefore, the first holder 100 and the second holder 200 are firmly coupled to each other.

Here, the first step 132 is shorter in the inward direction of the first holder 100 than the second step 133, the first protrusion 232 is the second protrusion ( It is preferable that the length of the second holder 200 is shorter than that of the second holder 200.

Second embodiment

6 is an exploded perspective view showing a stamper fixing holder for an LED TV light guide plate injection mold according to a second embodiment of the present invention.

Referring to FIG. 6, the stamper fixing holder for the LED TV LGP injection mold according to the second exemplary embodiment of the present invention may include a first holder 100, a second holder 200, and a third holder 300. This is made in detail as follows.

Since the first holder 100 and the second holder 200 have been described in the first embodiment, the components and detailed description thereof will be omitted.

First, the third holder 300 is installed between the first coupling portion 130 of the first holder 100 and the second coupling portion 230 of the second holder 200. In addition, the upper surface is formed with a third pressing portion 310 for pressing the edge surface of the stamper, the third pressing portion 310 is the first pressing portion 110 and the second pressing portion 210. Press the upper edge surface of the stamper in the same manner as. At this time, the third pressing unit 310 is preferably formed in the longitudinal direction of the third holder (300).

The third holder 300 has a structure including a third coupling portion 320 and a fourth coupling portion 330, which will be described in detail as follows.

The third coupling part 320 is formed at one end of the third holder 300, and the surface of the third coupling part 320 is in sliding contact with the first coupling part 130 of the first holder 100 and screwed thereto. In addition, the fourth coupling portion 330 is formed at the other end of the third holder 300, the sliding surface contact with the second coupling portion 230 of the second holder 200 and screwed.

In this case, the third coupling part 320 includes a second recess 321, a third protrusion 322, and a fourth protrusion 323.

The second recess 321 accommodates the first protrusion 131 inward, and the first protrusion 131 is inserted into sliding contact with the inside of the second recess 321.

The third protrusion 322 is formed on the second recess 321 and is in sliding contact with the first step 132.

The fourth protruding end 323 is formed under the second recess 321 and makes sliding contact with the second step 133, and fixes the screw to the first screw groove (not shown). And a fourth screw hole 3321 through which the screw is inserted.

That is, while the screw penetrated through the fourth screw hole 3321 is screwed into the first screw groove (not shown), the first coupling part 130 and the third coupling part 320 are screwed together. do. Therefore, the first holder 100 and the third holder 300 are firmly coupled to each other.

The fourth coupling part 330 includes a second protrusion 331, a third step 332, and a fourth step 333.

The second protrusion 331 is inserted into sliding surface contact with the inside of the first recess 231 of the second coupling portion 230.

The third step 332 is formed on the second protrusion 331 and is in sliding contact with the first protrusion 232.

The fourth step 333 is formed under the second protrusion 331 and the sliding surface contact with the second protrusion 233 and the screw penetrated through the third screw hole 2331 is inserted. A second screw groove (not shown) is provided. That is, as the screw penetrated through the third screw hole 2331 is screwed into the second screw groove (not shown), the second coupling portion 230 and the fourth coupling portion 330 are screwed together. do. Therefore, the second holder 200 and the third holder 300 are firmly coupled to each other.

In this case, the third step 332 is shorter in the inward direction of the third holder 300 than the fourth step 333, and the third protrusion 322 is the fourth protrusion ( The length of the third holder 300 is shorter than that of the third holder 300.

Therefore, by fixing the stamper of the upper plate (fixing part) of the mold by using the stamper fixing holder of the present invention, resin is generated through the burr generation of the resin due to the injection pressure and the screw hole of the screw-assembled fixing holder. It is not injected to the outside.

In addition, by assembling the screw inside the holder assembly to minimize the screw hole and to assemble the divided fixing holders, the burrs of the resin due to the injection pressure and the injection of the holder are not visible from the outside. There is an effect that the resin is not injected in the screw assembly screw holes.

In particular, the fixed holder of the gate portion of the mold having a very high injection pressure has a divided structure and screwed together, as in the present invention, so that the joints between the fixed holders for fixing the stamper are firmly coupled, It suppresses burr generation of resin.

In the above, the present invention has been described based on the preferred embodiments, but the technical idea of the present invention is not limited thereto, and modifications or changes can be made within the scope of the claims. It will be apparent to those skilled in the art, and such modifications and variations will belong to the appended claims.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention, and therefore, the present invention is limited only to the matters described in the drawings. It should not be interpreted.

1 to 3 is a perspective view showing a stamper fixing holder for a conventional LED TV light guide plate injection mold,

Figure 4 is a perspective view showing a stamper fixing holder for LED TV light guide plate injection mold according to an embodiment of the present invention,

5 is an exploded perspective view showing a stamper fixing holder for an LED TV light guide plate injection mold according to a first embodiment of the present invention;

6 is an exploded perspective view showing a stamper fixing holder for an LED TV light guide plate injection mold according to a second embodiment of the present invention.

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

100: first holder 110: first pressing unit

120: first screw hole 130: first coupling portion

131: first protrusion 132: first step

133: second step 200: second holder

210: second pressure unit 220: second screw hole

230: second coupling portion 231: first groove portion

232: first protrusion 233: second protrusion

2331: third screw hole 300: third holder

310: third pressing portion 320: third coupling portion

321: second recess 322: third protrusion

323: 4th Exodus 3231: 4th Screw Hole

330: fourth coupling part 331: second protrusion

332: third step 333: fourth step

Claims (2)

In the light guide plate injection mold fixing holder for fixing the stamper installed in the core of the mold when the injection mold of the light guide plate applied to the LED TV for 32 to 100 inches, The stamper fixing holder, The first coupling portion for pressing the edge surface of the stamper on the upper surface, the first screw hole through which the screw is inserted from the top through the first end, and the first coupling coupled to the second coupling portion of the second holder to the other end A first holder having a portion; And A second pressing portion which presses the edge surface of the stamper on the upper surface, a second screw hole through which a screw is inserted from the top at one end thereof, and a second coupling coupled to the first coupling portion of the first holder at the other end thereof; A second holder having a portion; The first coupling portion, A second stepped portion having a first protrusion inserted into the second coupling part, a first stepped portion formed on an upper portion of the first protrusiond portion, and a first screw groove formed under the first protrusiond portion and into which a screw is inserted; Characterized in that it comprises a, The second coupling portion, A first recess for accommodating the first protrusion inward, a first protrusion end in surface contact with the first step, and a surface contact with the second step, and a screw for fixing the screw in the first screw groove And a second protruding end having a third screw hole inserted into and penetrated from a lower portion thereof. The first step may be shorter in the inward direction of the first holder than the second step, and the first protruded end may be shorter in the outward direction of the second holder than the second protruded end. Stamper holder for LED TV light guide plate injection mold. The method of claim 1, A third pressing part installed between the first coupling part of the first holder and the second coupling part of the second holder and pressurizing an edge surface of the stamper on an upper surface thereof, A second recess for accommodating the first protrusion at one end thereof, a third protrusion having a surface contact with the first step, and a surface contact with the second step, and for fixing a screw in the first screw groove A third coupling part including a fourth protruding end having a fourth screw hole through which a screw is inserted from the bottom; And A second projection portion inserted into the first recess portion at the other end of the second coupling portion, a third step portion formed on an upper portion of the second projection portion and in surface contact with the first projection portion, and a lower portion of the second projection portion; And a fourth coupling part including a fourth stepper having a second screw groove which is formed in surface contact with the second protruding end and through which the screw penetrated through the third screw hole is inserted. Stamper holder for LED TV light guide plate injection mold, characterized in that.

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