KR20090023323A - Mold for manufacturing sealing case - Google Patents

Abstract

A mold for manufacturing a sealing case is provided to seal inside easily by forming a sealing member into one body on a front cover or a rear cover of the sealing case. A mold for manufacturing a sealing case comprises the followings: a fixed adhering plate(52); a fixed original plate(56) having an upper groove forming an upper side of a first cavity; a moving original plate(64) having a sub-groove forming a second cavity contacting with a lower end of an injection molded product on the first cavity; a driving original plate(70) guiding the moving original plate; and driving adhering plate(72) installed on a lower part of the driving original plate.

Description

Molding device for closed case manufacturing {MOLD FOR MANUFACTURING SEALING CASE}

1 is a perspective view showing a sealed case for portable home appliances according to the present invention.

Figure 2 is a perspective view of the first cover and the second cover is separated from the sealed case for portable home appliances according to the present invention.

Figure 3 (a) and (b) is a cross-sectional view of the first cover and the second cover of the combined state of the sealed case for portable home appliances according to the present invention, the first cover and the second cover of the general sealed case is coupled Section in a closed condition.

Figure 4 is an enlarged cross-sectional view of a portion of the first cover of the sealed case according to the present invention.

5 is a cross-sectional view showing a mold apparatus for manufacturing a sealed case according to the present invention.

6 to 11 is a flowchart illustrating the operation of the mold apparatus for manufacturing a sealed case according to the present invention.

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

10: case 12: first cover

13: sealing member 14: functional operation board

16: second cover 17: seating groove

50: case manufacturing mold apparatus 52: fixed side mounting plate

53: first bath 54: second bath

56: fixed side disk 57, 59: runner

58, 60: gate 62: upper groove portion

64: moving side disk 65: protruding core

66: lower groove 67: auxiliary protrusion core

68: auxiliary groove 70: movable side disc

72: movable side mounting plate 74: eject pin

100: first cavity 200: second cavity

The present invention relates to a gold for manufacturing a sealed case for protecting the internal parts of home appliances, and more particularly to a mold for manufacturing a sealed case to be formed integrally with a sealing portion for sealing.

In general, a portable home appliance is composed of a case forming an exterior and internal components mounted in the case. The case is largely composed of a front cover and a rear cover and are mutually coupled, and recently, a sealing member is provided between the front cover and the rear cover to waterproof the internal parts.

The sealing member is made of a soft material such as rubber, urethane, silicone, etc., and is formed in a ring or plate shape. The sealing member is installed at a portion where the front cover and the rear cover abut each other to seal the inside.

However, the conventional sealing case for portable home appliances has a problem that the process of coupling the sealing member to the front cover or the rear cover is made by hand, thereby reducing workability and productivity. In addition, the conventional closed case for portable home appliances is difficult to fit easily due to the characteristics of twisting or deformed shape in the process of bonding the sealing member, many assembly during assembly because the sealing member can be moved or detached during assembly work. Attention is required. In addition, conventionally, when the sealing member is missing or the sealing member is not subjected to uniform pressure during the assembly of the sealed case, the sealing force is not uniform.

An object of the present invention is to solve the above-mentioned problems of the prior art, it is possible to seal the interior to form a sealing member integrally on the front cover or the rear cover of the case, according to the sealed case having a waterproof sealing function It is to provide, and to provide a mold case for producing a sealed case integrally formed with a sealing member in this way.

In order to achieve the above object, the mold apparatus for manufacturing a closed case according to the present invention is provided with a fixed side attachment plate provided with first and second spouts for supplying a molten liquid and a lower side of the fixed side attachment plate, A fixed side disc having respective runners and gates connected to the two spouts, and having an upper groove portion connected to the gate connected to the first spout and forming an upper surface of the first cavity corresponding to the first cover of the sealed case; It is provided on the lower portion of the fixed side disk to be movable, connected to the lower groove portion forming the first cavity together with the upper groove portion and the gate connected to the second spout and fitted with the lower end of the injection molded product in the first cavity A moving side disc having an auxiliary groove for touching and forming a second cavity, and provided below the moving side disc so that the first cavity or the second cavity abuts each gate. It comprises a movable circular plate and the movable side mounting plate provided in the lower portion of the movable disc, which guide the movement of the moving-side disc.

Here, the movable side disk is inserted into the first cavity and the auxiliary extrusion mold is formed with a protrusion mold for forming a shape corresponding to the inner shape of the product and a gap spaced apart from the inner side of the product formed by the first cavity. The second cavity may be formed to abut the product inserted into the first cavity and the product inserted into the gap. In addition, the injection molded product injected into the second cavity is preferably a heterogeneous soft resin.

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

1 is a perspective view showing a sealed case for portable home appliances according to the present invention, Figure 2 is a perspective view of the first cover and the second cover is separated from the sealed case for portable home appliances according to the present invention, a) and (b) are cross-sectional views of a state in which the first cover and the second cover of the sealed case for portable home appliances according to the present invention are combined, and in a state in which the first cover and the second cover of the general sealed case are combined; 4A and 4B are enlarged views of A and B of FIG. 3.

As shown in FIGS. 1 to 4, the sealed case 10 according to the present invention may protect an article stored therein from an external impact, or facilitate movement or storage. To this end, the sealed case 10 includes a first cover 12 that forms an exterior front surface, and a second cover 16 that is coupled to the rear surface of the first cover 12 to protect an article therein. In addition, the sealing member 13 is integrally injection molded on the coupling line of the first cover 12 or the second cover 16. The sealing member 13 is made of a heterogeneous soft material such as rubber, urethane, silicone, etc., and the sealing member 13 is pressed against the engaging surface of the other cover to seal the inside.

Here, the sealing member 13 may be injection molded on any one of the first cover 12 or the second cover 16, in the embodiment of the present invention the first cover (used as a front cover ( An embodiment injection molded integrally with the engagement surface of 12) will be described. In addition, the second cover 16 may be provided with a seating groove 17 into which the sealing member 13 is inserted and seated.

In addition, the sealed case 10 may be a sealed case 10 of a portable home appliance in which an electronic component is installed, as shown in FIGS. 3 and 4 (a), and FIGS. 3 and 4 (b). As such, it is also possible to store food or the like, or a sealed case 20 for a general container.

That is, as shown in (a) of FIG. 3 and FIG. 4, when the sealed case 10 is used as the sealed case 10 for portable home appliances, a penetrating portion is formed inside the first cover 12. The penetrating portion is coupled to a functional operation board 14 for manipulating the electronic components of the portable home appliance.

Preferably, the lower end of the functional control board 14 may be formed to have a length at which a predetermined step is formed with the lower end of the first cover 12, and the sealing member 13 is formed on the first cover 12. Injection molding is in contact with the lower end of the functional panel 14 and the lower end, thereby sealing the gap between the first cover 12 and the functional control panel (14).

3 and 4 (b), the first case 22 and the second cover 26 are coupled to the sealed case 20 for storing food and the like. In addition, the sealing member 23 is integrally formed on the coupling line of the sealing case 20 to be seated in the other seating groove 27 to seal the inside. In addition, the lower end of the sealed case may be formed to have a predetermined step inward.

5 is a cross-sectional view illustrating a mold apparatus 50 for manufacturing a sealed case according to the present invention and FIGS. 6 to 11 which are flowcharts of operations of the mold apparatus 50 for manufacturing a sealed case according to the present invention. Referring to (50), it is as follows. The mold apparatus 50 for manufacturing a closed case of the present invention includes a fixed side attachment plate 52 for supplying a molten liquid. The fixed side attachment plate 52 is formed with a first taphole 53 and a second taphole 54 so as to supply melts of different materials, respectively.

In addition, a fixed side disk 56 is provided below the fixed side mounting plate 52. Runners 57 and 59 are formed in the fixed side disk 56 and connected to the first and second spouts 53 and 54, respectively, and gates 58 and 59 are formed in the runners 57 and 59, respectively. 60) is connected to supply the melt. The fixed side mounting plate 52 and the fixed side disk 56 are installed to be movable, thereby removing the injection of the molten liquid remaining in the runners 57 and 59 and the gates 58 and 60. have. In addition, the fixed side disk 56 is formed with an upper groove 62 connected to the gate 58 connected to the first spout 53. The upper groove 62 forms an upper surface of the first cavity 100 formed to correspond to the shape of the product.

In addition, the lower side of the fixed side disk 56, the movable side disk 64 is installed to be movable in the horizontal direction. The movable side disk 64 is provided with a lower groove 66 forming a lower surface of the first cavity 100. In addition, the movable side disk 64 is provided with an auxiliary groove 68 for contacting the upper groove 62 forming the first cavity 100 by horizontal movement to form the second cavity 200. The second cavity 200 is connected to the gate 60 connected to the second spout 54, and the molten liquid supplied from the second spout 54 is injected into the first cavity 100. It is injection molded integrally in the lower part.

Here, the molten liquid supplied to the first cavity 100 through the first spout 53 is made of a plastic resin and cured after injection. On the other hand, the molten liquid supplied through the second spout 54 is made of a material having a predetermined elasticity at the time of curing, preferably made of a heterogeneous soft material such as rubber, urethane, silicone and the like.

Accordingly, the product injection molded in the second cavity 200 is integrated with the product injection molded in the first cavity 100 and elastic to the second cover 16 coupled to the first cover 12. And close the gap.

In addition, a movable side disc 70 for moving the movable side disc 64 is provided under the moving side disc 64. The movable side disc 70 guides the movement of the movable side disc 64 so that the first cavity 100 or the second cavity 200 abuts each gate 58, 60 sequentially. Match.

On the other hand, the movable side disk 64 is provided with a protruding core 65 corresponding to the inner shape of the product to form the inside of the product. The protruding core 65 is made to be inserted into the first cavity 100. In addition, the movable side disk 64 is provided with an auxiliary protrusion core 67 to support the product of the first cavity 100 after the movable side disk 64 is moved. Preferably, a gap may be further formed between the auxiliary protrusion core 67 and the first cavity 100 so as to further couple another injection molded product to the inside of the injection molded product formed by the protruding core 65. Therefore, when the movable side disk 64 is inserted into the upper groove portion 62 of the fixed side disk 56 in a state in which another product is coupled to the auxiliary protruding core 67, it is injected into the first cavity 100. And other products are combined, and each lower end is brought into contact with the second cavity 200 at the same time. As a result, the injection molded product injected into the second cavity 200 seals a gap between the respective products.

A movable side attachment plate 72 is provided below the movable side disc 70. The movable side disc 70 is provided with injection means for removing the injection molded product in the first cavity 100 in the movable side disc 64. The injection means comprises an eject pin (74) installed to be movable up and down through the moving side disk 64 and the movable side disk 70, the fixed side mounting plate 52 and the fixed side In the state where the disc 56 is separated, the eject pin 74 is lifted by the injection molding machine ejection mechanism and made to push up the injection molded product. Here, the eject pin 74 may be formed in plurality depending on the number of cavities.

In addition, in the embodiment of the present invention, the mold apparatus 50 for manufacturing a closed case has been described for an embodiment consisting of two taps, that is, the first tap 53 and the second tap 54, many The runners 57 and 59, the gates 58 and 60, and the first cavity 100 and the second, respectively, which are connected to the first and second tapholes 53 to simultaneously process the products of It is preferable that the cavity 200 also consists of a plurality.

Looking at the manufacturing method of the sealed case using the mold apparatus 50 for manufacturing a sealed case configured as described above are as follows.

Method for manufacturing a sealed case according to the present invention comprises the steps of injection molding the first cover 12 or the second cover 16 of the sealed case 10 using the above-described mold, and the first cover 12 or Injection molding of the sealing member 13 integrally on the coupling line of the second cover 16. For example, when the sealing member 13 is injection molded to the first cover 12, when the first cover 12 and the second cover 16 are assembled, the sealing member 13 may be formed of the first cover 12. 2 is in close contact with the coupling surface of the cover 16 to seal the gap.

To this end, the sealing member 13 is preferably made of a heterogeneous soft material such as rubber, urethane, silicone and the like.

Looking at the process of manufacturing the first cover 12 of the sealed case 10 by using the manufacturing method of the sealed case according to the present invention. First, the mold apparatus 50 for manufacturing a closed case is installed, and the molten liquid which consists of a plastic resin is inject | poured into the 1st hot water outlet 53. As shown in FIG. In addition, the molten liquid supplied to the first hot water spout 53 is sequentially supplied to the runner 57 and the gate 58 of the fixed side disc 56 provided at the bottom of the fixed side attachment plate 52. The gate 58 is connected to the first cavity 100 formed by the upper groove portion 62 formed on the fixed side disk 56 and the lower groove portion 66 formed on the moving side disk 64, and the melt is The first cover 12 is injection molded by supplying it to the first cavity 100. In this case, the moving side disk 64 is provided with a protruding core 65 accommodated inside the first cavity 100 to form an inner surface of the first cover 12.

Next, the fixed side attachment plate 52 and the fixed side disc 56 are separated and the solids remaining in the runner 57 and the gate 58 are removed.

Then, the movable side disk 64 is moved, and the functional manipulation plate 14 coupled to the inner side of the first cover 12 is inserted into the auxiliary protrusion core 67 of the movable side disk 64. Next, the fixed side attachment plate 52 and the fixed side disc 56 are lowered to engage the mold.

When the mold is reassembled as described above, a molten liquid made of different soft materials is injected into the second spout 54 of the fixed side attachment plate 52. The dissimilar soft melt supplied to the second spout 54 forms an auxiliary groove 68 for forming the second cavity 200 in the movable side disc 64 through the runner 59 and the gate 60. ) Is injected. The auxiliary groove 68 is formed to abut the lower end of the first cover 12 injection molded in the first cavity 100 and the functional control panel 14 coupled to the inside of the first cover 12. Accordingly, the soft melt injected from the gate 60 is integrally formed by sealing the gap between the first cover 12 and the functional operating plate 14. As such, the soft melt injected by the second cavity 200 forms the sealing member 13 under the first cover 12.

Next, the fixed side attachment plate 52 and the fixed side disc 56 are separated and the injection means is operated to remove the first cover 12. That is, the eject pin 74, which is the injection means, rises and the unnecessary part formed in the first cover 12 and the second cavity 200 and the runner 59 formed in the first cavity 100. The molded part of the gate 60 is removed.

As described above with reference to the drawings, a mold apparatus for manufacturing a sealed case according to the present invention as described above, the present invention is not limited by the embodiments and drawings described above, the scope of the invention within the claims Of course, various modifications and variations can be made by those skilled in the art.

The mold apparatus for manufacturing a sealed case according to the present invention configured as described above is formed so that the sealing member is integrally formed on the front cover or the rear cover of the sealed case of the portable home appliance. There is no inconvenience to assemble, it can be easily and reliably sealed inside. In addition, since the process of forming the sealing member in the sealed case is automated, it is possible to produce a continuous product, the productivity is greatly improved, and the process of assembling the sealing member can also be automated to reduce labor costs, and to seal the sealing member. There is an advantage that can be solved at the source of the misassembly or missing problem occurring during the assembly process. In addition, the sealing member can be integrally injection molded even in a complicated shape of the coupling part, thereby making it easier to design the sealed case of the product and reliably seal the sealed case of the complicated shape. In addition, the present invention is easy to assemble or disassemble because the sealing member is not separated or lost from the sealed case, even if repeated assembling has the advantage that the sealing performance is not reduced.

Claims (3)

A fixed side attachment plate provided with first and second spouts for supplying a molten liquid, A first cavity provided at a lower portion of the fixed side mounting plate and having respective runners and gates connected to the first and second tap holes, connected to the gates connected to the first tap holes, and corresponding to the first cover of the sealed case; A fixed side disc having an upper groove portion forming an upper surface of the It is provided on the lower portion of the fixed side disk to be movable, connected to the lower groove portion forming the first cavity together with the upper groove portion and the gate connected to the second spout and fitted with the lower end of the injection molded product in the first cavity A moving side disc having an auxiliary groove that touches to form a second cavity, A movable side disc provided below the movable side disc to guide the movement of the movable side disc such that the first cavity or the second cavity abuts with each gate; Molding apparatus for manufacturing a closed case comprising a movable side attachment plate provided on the lower side of the movable side disk. The method according to claim 1, The movable side disk includes a protrusion mold inserted into the first cavity and forming a shape corresponding to the inner shape of the product, and an auxiliary protrusion mold having a gap spaced apart from the inside of the product formed by the first cavity. , The second cavity is a mold apparatus for manufacturing a closed case, characterized in that formed in contact with the product inserted into the first cavity and the product inserted into the gap. The method according to claim 1 or 2, The mold apparatus for manufacturing a closed case is characterized in that the injection molded product injected into the second cavity is a heterogeneous soft resin.

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