A mold for silica gel product and structure thereof

Abstract

This utility model relates to the field of injection mold technology, and in particular discloses a mold and its structure for silicone products. The mold structure for silicone products includes a moving mold plate and a fixed mold plate. A core is fixed to the bottom surface of the moving mold plate, and a fixed mold plate fixing plate is fixed to the bottom of the fixed mold plate. The surface of the fixed mold plate has cavities, and two sets of symmetrical molding inserts are installed inside the cavities. The bottom ends of the molding inserts penetrate the bottom of the fixed mold plate and are slidably connected to it. The bottom of the core has four mating cavities, each corresponding to a molding insert. Four inclined guide pillars are fixed to the inner side of the fixed mold plate, and the top ends of the inclined guide pillars are inserted into the bottom of the molding inserts. This utility model can reduce the difficulty of mold demolding and avoid damage to components caused by impact between the core and the molding inserts during mold closing.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a mold and its structure for silicone products. Background Technology

[0002] Molds refer to various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. Molds are composed of various parts, and different molds are composed of different parts. They mainly achieve the processing of the shape of an object by changing the physical state of the material being molded. A mold generally includes a moving mold, a fixed mold, ejector pins, inserts, a cooling system, an injection mechanism, and a hydraulic drive structure. Molds are classified into injection molds, stamping molds, die casting molds, and blow molds. Injection molds are the equipment used in injection molding. Injection molding is a method in which completely molten plastic material, stirred by a screw at a certain temperature, is injected into the mold cavity under high pressure, and after cooling and solidification, a molded product is obtained. This method is suitable for the mass production of complex-shaped parts. Injection molds are mostly used to process products with high plasticity, such as plastics and silicone. However, existing silicone cover products with protruding objects on the surface have long molding cycles, are difficult to demold after molding, and have relatively complex mold structures, leading to increased production costs. Therefore, they do not meet current needs. To address this, we propose a mold and its structure for silicone products. Utility Model Content

[0003] The purpose of this utility model is to provide a mold and its structure for silicone products, so as to solve the problems mentioned in the background art, such as long product molding cycle, difficulty in demolding the product after molding, and complex mold structure, which lead to increased production costs.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A mold structure for silicone products includes a movable mold plate and a fixed mold plate. A core is fixed to the bottom surface of the movable mold plate, and a fixed mold plate fixing plate is fixed to the bottom of the fixed mold plate. A cavity is provided on the surface of the fixed mold plate, and two sets of symmetrical molding inserts are installed inside the cavity. The bottom end of the molding insert penetrates the bottom of the fixed mold plate and is slidably connected to the fixed mold plate. The bottom of the core has four mating cavities, each corresponding to a molding insert. Four inclined guide pillars are fixed to the inner side of the fixed mold plate, and the top ends of the inclined guide pillars are inserted into the bottom of the molding inserts. Two molding inserts are installed below the fixed mold plate, and the top ends of the molding inserts penetrate the fixed mold plate and the fixed mold plate, extending to the inner side of the cavity. The molding inserts are slidably connected to the fixed mold plate and the fixed mold plate fixing plate.

[0006] Preferably, the two symmetrical molded fitting inserts are all inclined outwards, and the two symmetrical molded fitting inserts have a fork-shaped structure at the top of the Y-shape.

[0007] Preferably, a lifting electric push rod is installed at the bottom of the fixed template fixing plate, the bottom end of the lifting electric push rod is fixed to the mold base, and a lifting plate is fixed at the top end of the lifting electric push rod, the lifting plate being movably engaged with the bottom of the fixed template.

[0008] Preferably, the bottom outer side of the molded fitting insert is provided with a docking groove, one end of the lifting plate is slidably inserted into a lifting connecting plate, and one end of the lifting connecting plate is inserted into the docking groove.

[0009] Preferably, one end of the lifting connecting plate is inserted into the inside of the lifting plate and a connecting spring is installed between them. The two ends of the connecting spring are fixed to the lifting connecting plate and the lifting plate, respectively, and the connecting spring applies a thrust to the lifting connecting plate in the direction of the molded fitting insert.

[0010] Preferably, the outer surface of the end of the lifting connecting plate that is inserted into the docking slot is rolled with isolation balls, and the lifting connecting plate and the molded mating insert are in rolling contact through the isolation balls.

[0011] This utility model also provides a mold for silicone products, including the above-described mold structure for silicone products.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. After the product cools and solidifies, the mold opens and the moving platen moves the core upward, leaving the product inside the cavity. Then, the lifting electric push rod is energized and its top end descends. The lifting electric push rod drives the lifting plate and the lifting connecting plate to descend. At this time, the lifting connecting plate drives the molding insert to move downward along the inclined guide post until the top of the molding insert enters the bottom of the fixed platen and separates from the product. At this time, the product is demolded and can be directly taken out of the cavity. When taking it out, it will not be resisted by the molding insert, reducing the demolding difficulty of the product, making it easier to pick up the product and improving the product picking efficiency.

[0014] 2. This utility model folds up the protruding part of the product and lifts up the perimeter of the product to surround the protruding part. In this way, the product at the production site has a protruding and concave shape without an undercut. After the product is formed, the lifted perimeter can be folded down to obtain the desired structure product, reducing the molding cycle. It can also simplify the structure of the mold core and cavity, facilitate product demolding, and reduce production costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a structural sectional view of the template of this utility model;

[0017] Figure 3 This is a schematic diagram of the core structure of this utility model;

[0018] Figure 4 for Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 5 This is a schematic diagram of the finished product manufactured according to this utility model.

[0020] Figure 6 This is a schematic diagram illustrating the use of the product of this utility model.

[0021] In the diagram: 1. Moving template; 2. Fixed template; 3. Cavity; 4. Molding insert; 5. Molding mating insert; 6. Core; 7. Fixed template fixing plate; 8. Inclined guide post; 9. Lifting plate; 10. Lifting electric push rod; 11. Lifting connecting plate; 12. Connecting spring; 13. Docking slot; 14. Isolation ball; 15. Mating cavity. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figures 1 to 3 As shown, a mold structure for silicone products includes a movable mold plate 1 and a fixed mold plate 2. A core 6 is fixed to the bottom surface of the movable mold plate 1. A fixed mold plate fixing plate 7 is fixed to the bottom of the fixed mold plate 2. A cavity 3 is provided on the surface of the fixed mold plate 2. Two sets of symmetrical molding inserts 5 are installed inside the cavity 3. The bottom end of each molding insert 5 penetrates the bottom of the fixed mold plate 2 and is slidably connected to it. The bottom of the core 6 has four mating cavities 15, each corresponding to a molding insert 5. Four inclined guide posts 8 are fixed to the inner side of the fixed mold plate fixing plate 7. The top of the column 8 is inserted into the bottom of the molding fitting insert 5. Two molding inserts 4 are installed below the fixed template 2. The top of the molding insert 4 extends through the fixed template fixing plate 7 and the fixed template 2 to the inside of the cavity 3. The molding insert 4 is slidably connected with the fixed template 2 and the fixed template fixing plate 7. The slidably set molding fitting insert 5 is fitted into the cavity 15 after the core 6 enters the cavity 3, which facilitates the mold closing and molding, and avoids the core 6 from colliding with the molding fitting insert 5 during mold closing, which would cause damage to the core 6 or the molding fitting insert 5.

[0024] Both symmetrical molded fitting inserts 5 are inclined outwards, and the two symmetrical molded fitting inserts 5 have a fork-shaped structure at the top of the Y-shaped part.

[0025] like Figure 4 As shown, a lifting electric push rod 10 is installed at the bottom of the fixed template plate 7. The bottom end of the lifting electric push rod 10 is fixed to the mold base, and a lifting plate 9 is fixed at the top end of the lifting electric push rod 10. The lifting plate 9 is movably engaged with the bottom of the fixed template 2. A docking slot 13 is provided on the outer side of the bottom end of the molding fitting insert 5. A lifting connecting plate 11 is slidably inserted into one end of the lifting plate 9. One end of the lifting connecting plate 11 is inserted into the docking slot 13. The lifting electric push rod 10 controls the rise or fall of the lifting plate 9 and the lifting connecting plate 11, so that the lifting connecting plate 11 drives the molding fitting insert 5 to rise or fall, thereby realizing the mold closing or opening, which facilitates the demolding of the product.

[0026] One end of the lifting connecting plate 11 is inserted into the interior of the lifting plate 9 and a connecting spring 12 is installed between them. The two ends of the connecting spring 12 are fixed to the lifting connecting plate 11 and the lifting plate 9 respectively. The connecting spring 12 applies a thrust to the lifting connecting plate 11 pointing towards the molding fitting insert 5. The outer surface of the end of the lifting connecting plate 11 that is inserted into the docking slot 13 is rolled with isolation balls 14. The lifting connecting plate 11 and the molding fitting insert 5 make rolling contact through the isolation balls 14. The isolation balls 14 reduce the contact friction between the lifting connecting plate 11 and the molding fitting insert 5, and better drive the molding fitting insert 5 to slide along the outside of the inclined guide post 8.

[0027] This utility model also provides a mold for silicone products, including the above-described mold structure for silicone products.

[0028] Working principle: First, the mold is started and the mold closes. When the mold closes, the moving platen 1 moves the core 6 downward. The core 6 enters the cavity 3 until the moving platen 1 contacts the fixed platen 2. At this time, the lifting electric push rod 10 is energized and starts. The top of the lifting electric push rod 10 extends and moves the lifting plate 9 upward. When the lifting plate 9 moves, it drives the molding mating insert 5 to move along the outside of the inclined guide post 8 through the lifting connecting plate 11. The top of the molding mating insert 5 is inserted obliquely into the mating cavity 15 at the bottom of the core 6. At the same time, during the upward movement of the lifting plate 9, the bottom of the molding mating insert 5 gradually approaches the lifting plate 9. At this time, the lifting connecting plate 11 will retract into the lifting plate 9 and squeeze the connecting spring 12 until the connecting spring 12 contacts the bottom surface of the fixed platen 2. At this time, the mold is closed. The injection mechanism of the mold is started to inject the raw material into the cavity 3 and cool and solidify it. After cooling, the product is obtained.

[0029] Then the mold opens. When the mold opens, the moving platen 1 moves the core 6 upward. Because the molding fitting insert 5 is tilted upward, the product is blocked by the molding fitting insert 5 and stays inside the cavity 3. Then the lifting electric push rod 10 is energized and its top end descends. The lifting electric push rod 10 drives the lifting plate 9 and the lifting connecting plate 11 to descend. At this time, the lifting connecting plate 11 drives the molding fitting insert 5 to move downward along the inclined guide post 8 until the top of the molding fitting insert 5 enters the bottom of the fixed platen 2 and separates from the product. At this time, the product is demolded and can be directly taken out of the cavity 3. When taking it out, it will not be resisted by the molding fitting insert 5, reducing the demolding difficulty of the product and making it easier to pick up the product.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mold structure for a silicone product comprising a movable mold plate (1) and a fixed mold plate (2), characterized in that: The bottom surface of the moving template (1) is fixed with a core (6), the bottom of the fixed template (2) is fixed with a fixed template fixing plate (7), the surface of the fixed template (2) is provided with a cavity (3), the inner side of the cavity (3) is equipped with two sets of symmetrical molding fitting inserts (5), the bottom end of the molding fitting insert (5) penetrates the bottom of the fixed template (2) and is slidably connected to the fixed template (2), the bottom of the core (6) is provided with four fitting cavities (15) and corresponds one-to-one with the molding fitting inserts (5), the inner side of the fixed template fixing plate (7) is fixed with four inclined guide posts (8), the top end of the inclined guide posts (8) is inserted into the bottom of the molding fitting inserts (5), two molding inserts (4) are installed below the fixed template (2), the top end of the molding inserts (4) penetrates the fixed template fixing plate (7) and the fixed template (2) and extends to the inner side of the cavity (3), the molding inserts (4) are slidably connected with the fixed template (2) and the fixed template fixing plate (7).

2. The mold structure for a silica gel product according to claim 1, characterized by: The two symmetrical molding inserts (5) are both inclined to the outside, and the two symmetrical molding inserts (5) have a Y-shaped fork structure at the top.

3. The mold structure for a silicone product according to claim 1, characterized by: The bottom of the fixed template fixing plate (7) is equipped with a lifting electric push rod (10), the bottom end of the lifting electric push rod (10) is fixed to the mold base, and the top end of the lifting electric push rod (10) is fixed with a lifting plate (9), which is movably engaged with the bottom of the fixed template (2).

4. The mold structure for a silica gel product according to claim 3, characterized by: The bottom outer side of the molded fitting insert (5) is provided with a docking slot (13), and one end of the lifting plate (9) is slidably inserted with a lifting connecting plate (11), and one end of the lifting connecting plate (11) is inserted into the docking slot (13).

5. The mold structure for a silica gel product according to claim 4, characterized by: One end of the lifting connecting plate (11) is inserted into the inside of the lifting plate (9) and a connecting spring (12) is installed between the lifting plate (9). The two ends of the connecting spring (12) are fixed to the lifting connecting plate (11) and the lifting plate (9) respectively, and the connecting spring (12) applies a thrust to the lifting connecting plate (11) in the direction of the molded fitting insert (5).

6. The mold structure for a silica gel product according to claim 5, characterized by: The outer surface of the end of the lifting connecting plate (11) inserted into the docking slot (13) is inlaid with isolation balls (14), and the lifting connecting plate (11) and the molded fitting insert (5) are in rolling contact through the isolation balls (14).

7. A mold for a silicone product, characterized by: The mold structure for silicone products includes any one of claims 1-6.

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