KR101021492B1 - Apparatus for injection moulding spectacles frame - Google Patents

Abstract

The present invention relates to an injection molding apparatus for an eyeglass frame, and more particularly, to form a film layer made of film paper on the surface of the eyeglass frame during an injection molding process, and to simplify the process. Particularly, the film paper for forming the film layer is stable. The present invention relates to an eyeglass frame injection molding apparatus configured to secure a fixed state by ensuring a fixed state.

Glasses frame, film layer, film paper, welding, injection molding, decorative layer, printing, surface polishing, pressure reduction

Description

Apparatus for injection molding spectacles frame

The present invention relates to an injection molding apparatus for an eyeglass frame, and more particularly, to form a film layer made of film paper on the surface of the eyeglass frame during an injection molding process, and to simplify the process. Particularly, the film paper for forming the film layer is stable. The present invention relates to an eyeglass frame injection molding apparatus configured to secure a fixed state by ensuring a fixed state.

Recently, the use of plastic spectacle frames that can produce a variety of personalities at low cost has been increased, various patterns or shapes are formed on the surface of the plastic spectacle frame, and a film layer is formed on the surface, thereby having a beautiful appearance and a stable surface texture. .

The plastic spectacle frame is generally formed by injecting and cooling a molten melt in a molding space formed between an upper mold and a lower mold to form a solid frame of the eyeglass frame, and then ejecting the spectacle frame body from a molding space formed between the upper mold and the lower mold. Manufactured through the process.

In the related art, the surface of the spectacle frame manufactured by injection molding is subjected to surface polishing, and various patterns or patterns are formed through printing, and then a gloss or matte coating layer is formed on the spectacle frame on which the pattern or pattern is printed. By forming, the spectacle frame produced through the injection molding is configured to have a beautiful appearance and a stable surface texture.

However, in order to improve the productability of the spectacle frame, if the spectacle frame is subjected to a post-process including surface polishing, printing, and coating process, the productivity is lowered, and the accompanying cost due to production is greatly increased. Is generated.

Therefore, there is a need in the art for the widespread use of an improved method for manufacturing a spectacle frame and a manufacturing apparatus that can easily achieve the surface treatment of the spectacle frame manufactured by injection molding.

An object of the present invention devised to solve the above problems is to configure a film layer formed of a film paper on the surface of the spectacle frame during the injection molding process is configured to achieve a simplification of the process, in particular stable fixing of the film paper to form a film layer It is to provide an injection molding apparatus for the spectacle frame configured to ensure the quality stability by configuring to ensure the state.

The above object is achieved by the following configuration provided in the present invention.

The injection molding apparatus of the spectacle frame according to the present invention,

An upper mold having an upper molding groove with an open lower portion; A lower mold installed at a lower portion of the upper mold and having a lower molding groove open at an upper portion thereof; In the spectacle frame injection molding apparatus comprising a melt injection portion for injecting a high temperature plastic melt in a closed molding space formed by closely contacting the upper molding groove and the lower molding groove by the lowering of the upper mold,

An inner wall of the lower forming groove, or an inner wall of the upper forming groove, or a vacuum suction unit for inspiring action thereof is formed,

When the worker seats the film on the lower molding groove, and the upper mold is in close contact with the lower mold to form a molding space in which the lower molding groove and the upper molding groove are closed, the vacuum suction unit intakes air remaining in the molding space through the intake action. The film paper is adsorbed in a developed state on the inner wall of the molding space, and in this state, the melt injection section is configured to inject a high temperature melt into the molding space so that the spectacle frame having the film layer fused to the film paper is injection molded.

In the present invention, a plurality of fixing protrusions are formed on the outer side of the lower forming groove to penetrate and fix the fixing holes formed at the edge of the film paper, and the edge of the film paper having the fixing holes formed at the edge thereof is fixed by the fixing protrusion. Configured to be adsorbed on the inner wall of the molding space by the intake action of the vacuum adsorption unit,

It is proposed as a preferred embodiment that the decorative film is formed on the film paper placed in the lower mold by printing, and the decorative frame and the coating layer are formed on the spectacle frame produced by the injection molding.

More preferably, a vacuum suction unit is formed on an inner wall of the upper forming groove and an inner wall of the lower forming groove, respectively, and the pair of film sheets are stacked on the lower forming groove so that the laminated film is stacked on the upper forming groove. The film paper adsorbed on the inner wall and laminated on the lower side is adsorbed on the inner wall of the lower molding groove, so that a film layer made of film paper is formed on the lower and upper portions of the spectacle frame where the injection molding is completed.

On the other hand, the present invention is characterized by a spectacle frame produced by the injection molding apparatus of the spectacle frame.

As described above, in the present invention, the inner wall of the lower forming groove forming the forming space, or the inner wall of the upper forming groove, or both are provided with a vacuum suction unit for adsorbing the film paper melted by high heat, the surface of the spectacle frame in the injection process A spectacle frame injection molding apparatus configured to form a coating layer by fusion of film paper is proposed.

As such, when the coating layer is formed during the injection molding process of the spectacle frame, the process of polishing the spectacle frame after the separate injection is completed, forming various patterns or patterns through printing, and then forming the coating layer through coating is unnecessary. The associated costs are reduced, and the productivity is greatly improved.

 In addition, when the decorative layer is added to the film forming the coating layer, the decorative layer is formed to form the coating layer formed on the surface of the spectacle frame, and thus can have a beautiful appearance.

In particular, since the plastic melt injected through the melt injecting unit is injected into the molding space where the pressure reduction state is formed by the vacuum suction unit, air remaining in the molding space in the plastic melt is mixed with the air, and bubbles are formed in the spectacle frame in which injection molding is completed. Unauthorized problems can be prevented and improved product stability can be achieved.

Hereinafter, with reference to the accompanying drawings, the spectacle frame having an injection molding apparatus proposed as a preferred embodiment in the present invention, and a film layer manufactured using the same will be described in detail.

Figure 1 shows the combined state and disassembly state of the injection molding apparatus of the spectacle frame proposed as a preferred embodiment of the present invention, Figure 2 is a coating layer through the spectacle frame injection molding apparatus proposed as a preferred embodiment of the present invention Figure 3 is an operational state diagram showing the formed eyeglass frame injection molding process sequentially, Figure 3 shows the overall configuration of the film frame formed with a coating layer produced by the eyeglass frame injection molding apparatus proposed as a preferred embodiment in the present invention.

The spectacle frame forming apparatus 1 having the coating layer proposed as a preferred embodiment of the present invention includes an upper mold 10 having an upper molding groove 11 having a lower opening as shown in FIGS. 1 and 2; A lower mold 20 installed at a lower portion of the upper mold 10 and having a lower molding groove 21 formed at an upper portion thereof; And a melt injection part for injecting the plastic melt P heated at a high temperature into the molding space S formed by closely contacting the upper molding groove 11 and the lower molding groove 21 by the lowering of the upper mold 10. 30).

Here, the upper mold 10 in close contact with the lower mold 20 to form the molding space S, the lifting rod 12 is provided as in this embodiment, the lower mold 20 by the lifting action of the lifting rod 12 It may be in close contact with the), may be installed in a left and right transport structure to be in close contact with the lower mold by the left and right transport, the technical idea according to the present invention can be implemented in both forms.

As shown in the drawing, a plurality of upper forming grooves 11 are formed in the upper mold 10, and a lower forming groove 21 corresponding to each of the upper forming grooves 11 is formed in the lower mold 20 opposite thereto. The melt injection part 30 is injected into the plurality of molding spaces S formed by the plurality of upper forming grooves 11 and the lower forming grooves 21 by injecting the plastic melt P into a plurality of glasses frames in one cycle. 100 is configured to be manufactured through injection molding.

In the present embodiment, in implementing the spectacle frame forming apparatus 1 configured as described above, the coating layer made of the film paper 50 on the surface of the spectacle frame 100 during the injection molding process of the spectacle frame 100 through the injection of the plastic melt P. It is configured to form such that the process of manufacturing the spectacle frame is simplified.

To this end, in the present embodiment, the inner wall of the lower forming groove 21 formed in the lower mold 20 and the vacuum suction portion 40 for inspiring action on the inner wall of the upper forming groove 11 formed in the upper mold 10, respectively. It is additionally installed, the film sheet 50 seated in the lower forming groove 21, the upper forming groove 11 formed on the inner wall of the lower forming groove 21, or the upper mold 10 by the intake action of the vacuum suction portion 40. Adsorbed on the inner wall.

Referring to the drawings, a plurality of fixing protrusions 22 are formed on the outer side of the lower forming groove 21 to penetrate and fix the fixing holes 51 formed at the edge of the film paper 50, and the fixing holes 51 are formed. The edge of the film sheet 50 is vacuum-adsorbed to the lower forming groove 21 or the upper forming groove 11 as described later in the state fixed by the fixing projection 22.

The vacuum suction part 40 includes a vacuum pump 41 for forcibly sucking and discharging air, and a distribution suction pipe 32 disposed on inner walls of the lower molding groove 21 and the upper molding groove 11. , And a connection pipe 43 connecting the distribution suction pipe 42 and the vacuum pump 41.

In the present embodiment, for example, the melt injection portion 30 is formed in the upper forming groove 11, and a plurality of distribution suction pipes 42 of the vacuum suction portion 40 are disposed on the inner wall of the lower forming groove 21. Doing.

Then, the film paper is adsorbed on the inner wall of the lower forming groove 21, the inner wall of the upper forming groove 11 through the intake action of the vacuum suction unit 40 is fused to the surface of the spectacle frame 100 to form a film layer 110 (50) is made of a synthetic material such as PET (polyethylen terephthalate), PE (polyethylene), PP (polypropylene), etc., having the back side locally melted by contact with a plastic melt (P) heated at about 200 ° C. .

In addition, when the decorative layer 52 having various patterns or shapes is formed on the film paper 50 to form a film layer 110 formed of the film paper 50 on the surface of the spectacle frame 100 to be described later, as shown in FIG. 3. The decorative frame 52 is formed to be exposed on the surface of the finished frame of the spectacle frame 100 as described above, thereby having a beautiful appearance and a stable surface texture.

On the other hand, in the injection molding method of the spectacle frame through the spectacle frame injection molding apparatus 1 according to the present embodiment configured as described above, in the state in which the upper mold 10 is raised as shown in FIG. The film paper 50 is unfolded and seated.

At this time, the edge of the film paper 50 forms a state fixed to the fixing projection 22 formed on the outside of the lower forming groove 21 through the fixing hole 51.

Thereafter, as shown in FIG. 2B, the upper mold 10 is lowered to the lower mold 20 on which the film paper 50 is seated, and the lower molding groove 21 formed on the lower mold 20 and the upper molding groove formed on the upper mold 10 ( 11) to form a closed molding space (S) between.

Since the upper mold 10 and the lower mold 20 according to the present embodiment are formed with a plurality of upper molding grooves 11 and lower molding grooves 21, the upper mold 10 and the lower mold 20 are lowered when the upper mold 10 is lowered. A plurality of molding spaces S are formed therebetween.

When the molding space S is sealed in this manner, the vacuum suction part 40 provided on the inner wall of the lower molding groove 21 or the inner wall of the upper molding groove 11 is formed in the molding space S through vacuum suction. Air remaining in the forcibly discharged film paper 50 seated on the lower die 20 is vacuum-adsorbed on the inner wall of the lower forming groove 21 or the inner wall of the upper forming groove (11).

And, if necessary, without placing a sheet of film paper in the lower forming groove 21, a pair of film sheets are placed in a stacked state, and through the vacuum suction portion on the inner wall of the upper forming groove and the inner wall of the lower forming groove, respectively When the intake action is achieved, the film paper stacked on the upper part is in close contact with the inner wall of the upper molding groove, and the film paper stacked on the lower part is in close contact with the inner wall of the upper molding groove, so that the film paper is adsorbed on the entire inner wall of the molding space as a whole. Can be.

In addition, since the air remaining in the molding space S is forcibly discharged to the outside by the intake action of the vacuum adsorption unit 40 for adsorption of the film paper 50, the inside of the molding space S has a higher air pressure than the atmosphere. It forms a relatively low decompression state.

Then, the melt injection portion 30 is a plastic melt (P) heated in the molding space (S) in which the film paper 50 is adsorbed on the inner wall in whole or locally by the intake action of the vacuum suction unit 40 as shown in FIG. ) And the plastic melt (P) injected into the molding space (S) is gradually cooled and solidified into the spectacle frame (100).

At this time, since the plastic melt P injected through the melt injection part 30 is injected into the molding space S under a reduced pressure, air remaining in the molding space S is mixed into the plastic melt P without endless mixing. As a result, the problem that bubbles are generated in the spectacle frame 100 in which injection molding is completed can be prevented, and thus improved product stability can be secured.

Then, the film paper (P) adsorbed on the inner wall of the molding space (S) during this process is fused to the surface of the eyeglass frame 100 as shown in Figure 3 is injection molded to form a coating layer 110, the eyeglass frame 100 When the molding is completed, the operator lifts the upper mold 10 as shown in FIG. 2D, and releases the spectacle frame 100 on which the coating layer 110 is formed by fusion of film paper.

Therefore, the spectacle frame injection molding apparatus 1 according to the present embodiment can produce the spectacle frame 100 having the film layer 50 made of the film paper 50 on the surface thereof through an injection molding process, thereby improving productivity. In addition, since injection molding is performed under a reduced pressure, bubbles are prevented from occurring in the spectacle frame 100, thereby ensuring improved product stability.

Figure 1 shows the combined state and disassembled state of the injection molding apparatus of the spectacle frame proposed in the preferred embodiment of the present invention, respectively,

FIG. 2 is an operational state diagram sequentially showing an eyeglass frame injection molding process in which a film layer is formed through the eyeglass frame injection molding apparatus proposed as a preferred embodiment of the present invention.

Figure 3 shows the overall configuration of the spectacle frame formed with a coating layer produced by the spectacle frame injection molding apparatus proposed as a preferred embodiment in the present invention.

**** Explanation of symbols for the main parts of the drawing ****

1. Eyeglass Frame Injection Molding Equipment

10. Upper section 11. Upper forming groove

12. Lifting rod

20. Lower mold 21. Lower molding groove

22. Fixing protrusion 30. Melt injection part

40. Vacuum suction part 41. Vacuum pump

42. Dispensing suction line 43. Connector

50. Film Paper 51. Fasteners

52. Decoration

100. Glasses frame 110. Film layer

Claims (3)

An upper mold having an upper molding groove with an open lower portion; A lower mold installed at a lower portion of the upper mold and having a lower molding groove open at an upper portion thereof; In the spectacle frame injection molding apparatus comprising a melt injection portion for injecting a high temperature plastic melt in a closed molding space formed by closely contacting the upper molding groove and the lower molding groove by the lowering of the upper mold, An inner wall of the lower forming groove, or an inner wall of the upper forming groove, or a vacuum suction unit for inspiring action is formed, so that an operator seats a film sheet on the lower forming groove, and then the upper mold adheres to the lower mold so that the lower forming groove and the upper portion When a molding space is formed in which the molding groove is sealed, the vacuum suction part sucks air remaining in the molding space through the intake action to adsorb the film paper on the inner wall of the molding space, and in this state, the melt injection part enters the molding space. By injecting a high temperature melt, the spectacle frame having the film layer fused to the film paper is configured to be injection molded, while a plurality of fixing protrusions are formed on the outer side of the lower forming groove to penetrate the fixing holes formed at the edge of the film paper. The edges of the film paper with the fixing holes formed on the edges are formed with the edges fixed by the fixing protrusions. Injection molding apparatus of the spectacle frame, characterized in that is configured to configured to be adsorbed on the inner wall of the molding space by the intake suction action section. delete delete

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