TWI844123B - Optical Sheet Injection Molding Module - Google Patents

Abstract

An optical sheet injection molding module, the molding module has a mold core printed by a metal 3D printer, and the mold core printed into a three-dimensional shape has a top surface, a bottom surface, a peripheral wall, a through hole, a number of mold cavities and at least one temperature control flow channel. The mold cavity and the temperature control flow channel are arranged inside the mold core, and the temperature control flow channel passes through each of the mold cavities in sequence, and then passes through the peripheral wall with at least one inlet and at least one outlet. The through hole is arranged in the center of each of the mold cavities arranged in a ring shape, and passes through the top surface and the bottom surface, so that the through hole can connect each of the mold cavities with radial number of guide grooves.

Description

Optical sheet injection molding module

The present invention relates to an optical sheet injection molding module that is printed using a metal 3D printer.

According to the currently known optical lens injection molding module, there are many disclosed in the domestic patent certificate No. M560385, which includes: an upper mold base (11), a lower mold base (12) and a mold core assembly (20), the upper and lower mold bases (11) (12) are used for injection molding of optical lenses, the upper mold base (11) and the lower mold base (12) both have a first surface (13) and a second surface (14), and the first surface (13) of the upper mold base (11) and the lower mold base (12) are both provided with a mold core hole (20) which is concave toward the second surface (14). 19), when the upper and lower mold bases (11) (12) are molded together, the first surfaces (13) of the two mold bases (11) (12) are aligned, so that the mold core assembly (20) can be closed, and the plastic raw material is heated and melted by the injection molding machine and then injected into the mold base structure; the mold core assembly (20) includes a first mold core (21), a second mold core (22) and a third mold core (23), and the first mold core (21) has a through hole (213) in the center and is connected to a plurality of guide grooves (212). When the plastic raw material is filled in the mold cavity (211), the mold core assembly (20) is sealed. The optical lens can be successfully manufactured by the injection molding method, and the guide groove (212) is connected to the mold cavity (211). A first cooling line (24) and a second cooling line (25) are reserved at the position of the mold core assembly (20) aligned with the upper mold base (11) and the lower mold base (12). The cooling lines (24) and (25) are appropriately separated from the bottom of the mold cavity (211) and do not penetrate the mold cavity (211). The first cooling line (24) is a curved annular groove, so as to be arranged inside the mold core assembly (20) and located at the first mold core. (21) Between the bottom and the second mold core (22), but not penetrating the mold cavity (211) and the second surface (14), the second cooling line (25) is a curved annular groove, so as to be arranged inside the mold core assembly (20), and located between the bottom of the second mold core (22) and the third mold core (23), but not penetrating the mold cavity (211) and the second surface (14), and at both sides of the first cooling line (24) and the second cooling line (25), they are connected to at least one coolant input channel (17) and at least one coolant output channel (18) respectively.

However, the above-mentioned known structure still has the following problems in practical application: (i) the first mold core (21), the second mold core (22) and the third mold core (23) need to be cut by a tool first to smoothly process the mold cavity (211), the guide groove (212), the through hole (213), the first cooling line (24) and the second cooling line (25) before they can be pressed in order. The mold assembly (20) is assembled in sequence to form a complete mold assembly (20). Therefore, not only is the manufacturing process complicated and the processing cost high, but the production speed is also too slow, which is not conducive to competition among peers; (2) the mold assembly (20) is composed of the first mold (21), the second mold (22) and the third mold (23) combined with each other, so the integrity is poor, and there is also a concern about whether it can be completely sealed during use.

Therefore, the inventor of this invention had this in mind and came up with the idea of creating a device. He then designed it based on his years of experience, conducted many discussions and conducted sample tests, and made many revisions and improvements before launching this invention.

It is known that the mold assembly production process is cumbersome, the processing cost is high, and the overall quality is poor. These are the technical problems that need to be solved.

The optical sheet injection molding module of the present invention has a mold core that is printed and manufactured by a metal 3D printer. The metal 3D printer is used to lay metal powder on its working platform, and then the metal powder is irradiated and sintered by the laser heat energy emitted by the metal 3D printer to melt the metal powder into a whole according to the required shape, so that a metal layer can be formed on the working platform. The metal 3D printer is used to print and stack the metal layers layer by layer to further complete the three-dimensional mold core. The three-dimensional mold core has a top surface, a bottom surface, a peripheral wall, a through hole, a digital mold cavity and at least one temperature control flow channel. The mold The cavity and the temperature control channel are arranged inside the mold core, and the temperature control channel passes through each cavity in sequence, and then passes through the outer peripheral wall with at least one inlet and at least one outlet, and the through hole is arranged in the center of each cavity arranged in a ring shape, and passes through the top surface and the bottom surface, so that the through hole can connect each cavity with radial guide grooves, and use the metal 3D printer to print layer by layer, so that the through hole, the guide groove, the cavity, the temperature control channel, the inlet and the outlet can be directly reserved in the process of printing and stacking, without the need for cutting with a tool; thereby, the optical sheet injection molding module can be formed.

(I) The optical sheet injection molding module of the present invention uses the metal 3D printer to print and stack the mold core, which does not need to be cut with a tool and then assembled together. In addition to the advantages of fewer processes, faster production speed and lower processing costs, the mold core can also be customized.

(ii) The optical sheet injection molding module of the present invention, the mold core is printed and stacked using the metal 3D printer, has excellent integrity and can be completely sealed when in use.

Parts of this invention:

(10): Moulding

(11):Metal layer

(12): Top surface

(13): Bottom surface

(14): Outer wall

(15):Through hole

(151):Guide groove

(16):Mold cavity

(17): Temperature control channel

(171):Entrance

(172):Export

(173): Circular path

(174): Outer Ring Department

(175): Inner ring

(176):Connecting access road

(20):Metal 3D printer

(21):Working platform

(22):Laser

(30):Metal powder

[Figure 1] is a three-dimensional diagram of the present invention.

[Figure 2] is a block flow chart of the present invention.

[Figure 3] is the first diagram of the stacking of metal layers of the present invention.

[Figure 4] is the second diagram of the stacking of metal layers of the present invention.

[Figure 5] is the stacking diagram of the metal layers of the present invention.

[Figure 6] is the stacking diagram of the metal layers of the present invention.

[Figure 7] is a plan view of the present invention.

[Figure 8] is the first cross-sectional view of the present invention.

[Figure 9] is the second cross-sectional view of the present invention.

[Figure 10] is a three-dimensional diagram of another preferred embodiment of the present invention.

In order to enable the review committee to have a deeper understanding and knowledge of the purpose, features and effects of this invention, please refer to the [Simple Diagram Description] for details as follows:

Generally, according to the present invention, please refer to FIGS. 1 to 6 to provide an optical sheet injection molding module. The molding module has a mold core (10) printed by a metal 3D printer (20). The metal 3D printer (20) is used to lay metal powder (30) on its working platform (21). The metal powder (30) is then irradiated and sintered by the heat energy of the laser (22) emitted by the metal 3D printer (20). 30) are melted into a whole according to the required shape, so that a metal layer (11) can be formed on the working platform (21). The metal layer (11) is printed and stacked layer by layer through the metal 3D printer (20), so that the three-dimensional mold core (10) can be further completed. The three-dimensional mold core (10) printed again has a top surface (12), a bottom surface (13), an outer peripheral wall (14), a through hole (15), and a digital mold cavity (16). and at least one temperature control channel (17), the mold cavity (16) and the temperature control channel (17) are arranged inside the mold core (10), and the temperature control channel (17) passes through each of the mold cavities (16) in sequence, and then passes through the outer peripheral wall (14) through at least one inlet (171) and at least one outlet (172), and the through hole (15) is arranged in the center of each of the mold cavities (16) arranged in a ring shape, and passes through the top surface (12) and the bottom surface (14). The surface (13) allows the through hole (15) to connect each of the mold cavities (16) with radial guide grooves (151), and the metal 3D printer (20) is used for layer-by-layer printing, so that the through hole (15), the guide groove (151), the mold cavity (16), the temperature control flow channel (17), the inlet (171) and the outlet (172) can be directly reserved during the printing stacking process without the need for cutting with a tool.

The present invention provides an optical sheet injection molding module, wherein the mold core (10) needs to construct a 3D model before printing (please refer to Figure 2 for reference).

The present invention provides an optical sheet injection molding module, wherein the mold core (10) is installed in an injection molding mold (not shown), so that the optical sheet is injection molded through the injection molding mold and the mold cavity (16) of the mold core (10). During the injection molding, the flow of the fluid in the temperature control flow channel (17) can be used to specifically cool down or heat up the mold cavity (16), and the fluid is a liquid fluid or a gaseous fluid, so that the fluid can be introduced from the inlet (171), fully flow through the temperature control flow channel (17), and then be guided out from the outlet (172).

The present invention provides an optical sheet injection molding module, wherein the mold cavity (16) is cylindrical in shape to match the production of the optical sheet.

The present invention provides an optical sheet injection molding module, wherein the temperature control flow channel (17) is provided in a plurality of layers separated from top and bottom, and each layer is interconnected, so that the fluid introduced from the inlet (171) can fully flow through each layer of the temperature control flow channel (17) and then be guided out from the outlet (172) (please refer to Figures 7 to 9 at the same time).

The present invention provides an optical sheet injection molding module, wherein the temperature control flow channel (17) has two annular paths (173) separated from each other, each of the two annular paths (173) having an outer annular portion (174) and an inner annular portion (175), so that the outer annular portion (174) and the inner annular portion (175) can be respectively arranged along the outer edge and the inner edge of the mold cavity (16), and a plurality of connecting guides (176) are also arranged between the outer annular portion (174) and the inner annular portion (175) (please refer to Figures 8 and 9 at the same time).

The present invention provides an optical sheet injection molding module, wherein the temperature control channel (17) is designed in a spiral shape (please also refer to Figure 10).

The present invention provides an optical sheet injection molding module, wherein the metal powder (30) is organic.

The present invention provides an optical sheet injection molding module, wherein the metal powder (30) is an inorganic substance.

The optical sheet injection molding module has the following advantages: (1) The mold core (10) uses the metal 3D printer (20) to print and stack, and does not need to use a tool for cutting and then assemble and combine. In addition to the advantages of fewer processes, faster production speed and lower processing costs, the mold core (10) can also be customized; (2) The mold core (10) uses the metal 3D printer (20) to print and stack, which has excellent integrity and can be completely sealed when in use.

However, the above is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention; that is, all equivalent changes and modifications made within the scope of the patent application for the present invention should still fall within the scope of this invention patent.

(10): Moulding

(11):Metal layer

(12): Top surface

(13): Bottom surface

(14): Outer wall

(15):Through hole

(151):Guide groove

(16):Mold cavity

(17): Temperature control channel

(171):Entrance

(172):Export

(173): Circular path

(174): Outer Ring Department

(175): Inner ring

(176):Connecting access road

Claims (6)

An optical sheet injection molding module, wherein: the molding module has a mold core printed by a metal 3D printer, and the metal powder is first laid on the working platform of the metal 3D printer, and then the laser heat energy emitted by the metal 3D printer is used for irradiation and sintering, so that the metal powder is melted into a whole according to the required shape, so that a metal layer can be formed on the working platform, and the metal layer is printed and stacked layer by layer by the metal 3D printer, so that the three-dimensional mold core can be further completed, and the three-dimensional mold core printed has a top surface, a bottom surface, a peripheral wall, a through hole, a number of mold cavities and at least one temperature control flow channel, and the mold cavity and the temperature control flow channel are arranged inside the mold core, and the temperature control flow channel passes through each of the mold cavities in sequence, and then passes through the peripheral wall with at least one inlet and at least one outlet, and the The through hole is arranged in the center of each mold cavity arranged in a ring shape, and penetrates the top surface and the bottom surface, so that the through hole can connect each mold cavity with radial guide grooves, and the metal 3D printer is used for layer-by-layer printing, so that the through hole, the guide groove, the mold cavity, the temperature control flow channel, the inlet and the outlet can be directly reserved in the process of printing and stacking without further cutting. The flow channel is arranged in several layers separated from the upper and lower parts according to the height of the mold cavity, and each layer of the temperature control flow channel is interconnected. The temperature control flow channel has two ring paths separated from the left and right. The two ring paths each have an outer ring part and an inner ring part, so that the outer ring part and the inner ring part can be arranged along the outer edge and the inner edge of the mold cavity respectively, and a number of connecting guides are also arranged between the outer ring part and the inner ring part. As described in claim 1, the optical sheet injection molding module, wherein the mold core needs to construct a 3D model before printing. The optical sheet injection molding module as described in claim 1, wherein the mold core is installed in the injection molding mold, so that the optical sheet is injection molded through the injection molding mold and the mold cavity of the mold core, and during the injection molding, the flow of the fluid in the temperature control flow channel can be used to specifically cool down or heat up the mold cavity, and the fluid is introduced from the inlet, fully flows through the temperature control flow channel, and then is guided out from the outlet. An optical sheet injection molding module as described in claim 3, wherein the fluid is a liquid fluid. An optical sheet injection molding module as described in claim 3, wherein the fluid is a gaseous fluid. The optical sheet injection molding module as described in claim 3, wherein the mold cavity is cylindrical in shape to match the production of the optical sheet.

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