Quickly-formed liquid silica gel mold

Abstract

The utility model discloses a rapid prototyping liquid silica gel mould, which comprises a lower mould plate and an upper mould plate, a plurality of prototyping bosses are fixed on the upper surface of the lower mould plate, raised mould cores are fixed on the upper surfaces of the prototyping bosses close to the front side and the rear side, conical cylinders are uniformly distributed on the upper surfaces of the mould cores, and the lower mould plate is fixed on the lower mould plate. A first runner communicated with the area where the mold core is located is formed in the upper surface of the forming boss, a forming concave cavity matched with the forming boss is formed in the lower surface of the upper mold plate, a mold cavity matched with the mold core is formed in the top face of the inner side of the forming concave cavity, and a forming concave hole matched with the main body is formed in the top face of the inner side of the mold cavity. Silica gel in a molten state is sent to the mold core through the first flow channel to fill the mold cavity and fill the small cavities corresponding to the main body, and air in the small cavities is exhausted through the formed exhaust holes to fill the small cavities, so that the forming quality of silica gel products is guaranteed faster and better.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, concretely is a kind of liquid silicone rubber mould of quick forming. BACKGROUND

[0002] Silicone rubber mould is a tool for producing silicone rubber products, and its forming process is to inject the material melted by heating into the mold cavity under high pressure, and then obtain the shaped product after cooling and solidification.

[0003] However, when the existing silicone rubber mould is used to form some silicone rubber products, since many small columnar bodies are designed on the silicone rubber products, corresponding columnar cavities are needed when forming the silicone rubber products, and since the exhaust effect of the small cavities is not good when forming, the molten silicone rubber cannot fill the small cavities, thereby affecting the forming quality and easily causing the problems of flash, bubbles and lack of glue. INNOVATION CONTENT

[0004] To solve the problem of poor exhaust effect of the small cavity of the existing silicone rubber mould, the present application provides a liquid silicone rubber mould for quick forming, which adopts the following technical scheme:

[0005] The liquid silicone rubber mould for quick forming includes a lower die plate and an upper die plate, the upper surface of the lower die plate is fixed with a plurality of forming bosses, the upper surface of each forming boss is fixed with a protruding core near the front and rear positions, the upper surface of each core is uniformly arranged with a conical column, the upper surface of each forming boss is provided with a first flow channel communicating with the area where the core is located, the lower surface of the upper die plate is provided with a forming cavity matched with the forming boss, the inner top surface of the forming cavity is provided with a core cavity matched with the core, the inner top surface of the core cavity is provided with a forming recess matched with the main body, and the upper surface of the upper die plate is provided with an exhaust hole communicating with the forming recess.

[0006] Optionally, the upper surface of the lower die plate is provided with a first sealing groove at the edge, and a first sealing ring is installed inside the first sealing groove.

[0007] Optionally, the upper surface of the lower die plate is fixed with a positioning block near each of the four corners, and the positioning block is a trapezoidal block.

[0008] Optionally, the lower surface of the upper die plate is provided with a positioning groove matched with the positioning block near each of the four corners, the upper surface of the upper die plate is provided with a horizontal second flow channel at the center, the lower surface of the upper die plate is provided with a plurality of glue injection holes communicating with the second flow channel, and the glue injection holes are matched with the first flow channel.

[0009] Optionally, the upper surface of the upper die plate is provided with a second sealing groove near the edge, and a second sealing ring is installed inside the second sealing groove.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] In the utility model, the molten silicone is sent to the core through the first flow channel to fill the cavity and fill it into each small cavity corresponding to the main body. At this time, the air in the small cavity is discharged through the exhaust holes to achieve the filling of the small cavity, thereby better ensuring the molding quality of the silicone product.

[0012] The traditional three-plate mold is redesigned into a two-plate mold, an upper mold plate and a lower mold plate. The structure is simple and the flow channel design is reasonable, which can quickly form silicone products and complete demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a three-dimensional diagram of a rapid prototyping liquid silicone mold of the utility model;

[0015] Figure 2 This is a schematic diagram of the lower template of a rapid prototyping liquid silicone mold shown in the utility model;

[0016] Figure 3 This is a schematic diagram of an upper template of a rapid prototyping liquid silicone mold shown in the present invention;

[0017] Figure 4 It is a schematic diagram of a partial cross-sectional view of an upper template of a rapid prototyping liquid silicone mold shown in the utility model.

[0018] In the figure: 1. Lower template; 11. First sealing groove; 12. First sealing ring; 13. Positioning block; 14. Molding boss; 15. Core; 16. First runner; 2. Upper template; 21. Molding cavity; 22. Cavity; 23. Glue injection hole; 24. Positioning groove; 25. Second runner; 26. Exhaust hole; 27. Second sealing groove; 28. Second sealing ring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiment is a part of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents the selected embodiments of the utility model.

[0020] Specifically refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a liquid silicone mold for rapid prototyping, comprising a lower mold plate 1 and an upper mold plate 2, the upper surface of the lower mold plate 1 is fixed with a plurality of molding bosses 14, and the upper surface of the molding boss 14 is fixed with a convex core 15 near the front and rear positions, the upper surface of the core 15 is uniformly arranged with a conical cylinder, the upper surface of the molding boss 14 is provided with a first flow channel 16 communicating with the area where the core 15 is located, the lower surface of the upper mold plate 2 is provided with a molding cavity 21 matched with the molding boss 14, and the inner side top surface of the molding cavity 21 is provided with a molding cavity 22 matched with the core 15, the inner side top surface of the molding cavity 22 is provided with a molding recess matched with the main body, the upper surface of the upper mold plate 2 is provided with an exhaust hole 26 communicating with the molding recess, the molten liquid silicone is sent to the core 15 through the first flow channel 16 to fill the molding cavity 22 and fill each small cavity corresponding to the main body, at this time the air in the small cavity is discharged through the exhaust hole 26 to realize the fullness of the small cavity, thereby better ensuring the molding quality of the silicone product.

[0021] Specifically refer to Figure 2 , the upper surface edge of the lower mold plate 1 is provided with a first sealing groove 11, and the first sealing ring 12 is installed in the inner side of the first sealing groove 11, the first sealing ring 12 in the first sealing groove 11 better realizes the sealing property when the lower mold plate 1 and the upper mold plate 2 are closed, the upper surface of the lower mold plate 1 is fixed with a positioning block 13 near the four corners for positioning when the upper mold plate 2 is closed, and the positioning block 13 is set as a trapezoidal block to facilitate positioning and closing guide.

[0022] Specifically refer to Figure 3As shown, the lower surface of the upper mold plate 2 is provided with a positioning groove 24 near each of the four corners for positioning cooperation with the positioning block 13, and the upper surface of the upper mold plate 2 is provided with a horizontal second flow channel 25 in the center, and the lower surface of the upper mold plate 2 is provided with a plurality of glue injection holes 23 in communication with the second flow channel 25, and the glue injection holes 23 are in butt joint with the first flow channels 16, and the second flow channel 25 divides the molten liquid silicone injected by the injection molding machine into each of the glue injection holes 23 and then into each of the first flow channels 16.

[0023] For details, please refer to Figure 4 As shown, the upper surface of the upper mold plate 2 is provided with a second sealing groove 27 near the edge, and the inner side of the second sealing groove 27 is provided with a second sealing ring 28, and the upper mold plate 2 realizes the fit sealing between the upper mold plate 2 and other plate bodies through the second sealing ring 28 in the second sealing groove 27.

[0024] Working principle: when the silicone product is formed, the molten liquid silicone is injected into the second flow channel 25 by the injection molding machine, at this time the molten liquid silicone in the second flow channel 25 flows into the plurality of first flow channels 16 through the plurality of glue injection holes 23 respectively, and is sent to the closed cavity formed by the core 15 and the cavity 22 through the first flow channel 16, and fills the cavity to complete the forming processing of the silicone product, and the silicone product can be demolded by opening the upper mold plate 2.

[0025] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rapid prototyping liquid silicone mold, comprising a lower template (1) and an upper template (2), characterized in that: The upper surface of the lower template (1) is fixed with a plurality of molding bosses (14), and the upper surface of the molding bosses (14) is fixed with raised cores (15) near the front and rear sides, and the upper surface of the cores (15) is evenly arranged with conical columns, and the upper surface of the molding bosses (14) is provided with a first flow channel (16) connected to the area where the cores (15) are located, and the lower surface of the upper template (2) is provided with a molding cavity (21) matched with the molding bosses (14), and the inner top surface of the molding cavity (21) is provided with a molding cavity (22) matched with the core (15), and the inner top surface of the molding cavity (22) is provided with a molding concave hole matched with the main body, and the upper surface of the upper template (2) is provided with an exhaust hole (26) connected to the molding concave hole.

2. A rapid prototyping liquid silicone mold according to claim 1, characterized in that: A first sealing groove (11) is provided on the edge of the upper surface of the lower template (1), and a first sealing ring (12) is installed inside the first sealing groove (11).

3. A rapid prototyping liquid silicone mold according to claim 2, characterized in that: Positioning blocks (13) are fixed on the upper surface of the lower template (1) near the four corners, and the positioning blocks (13) are configured as trapezoidal blocks.

4. A rapid prototyping liquid silicone mold according to claim 3, characterized in that: The lower surface of the upper template (2) is provided with positioning grooves (24) near the four corners for positioning with the positioning blocks (13), and a transverse second flow channel (25) is provided at the center of the upper surface of the upper template (2). The lower surface of the upper template (2) is provided with a plurality of glue injection holes (23) connected with the second flow channel (25), and the glue injection holes (23) are docked with the first flow channel (16).

5. A rapid prototyping liquid silicone mold according to claim 4, characterized in that: A second sealing groove (27) is provided on the upper surface of the upper template (2) near the edge, and a second sealing ring (28) is installed inside the second sealing groove (27).

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