A silicone rubber compression molding mold

Abstract

The utility model relates to mould technical field, concretely is a kind of silicon rubber die forming mould, including workbench, the upper surface of workbench is fixedly equipped with lower mould and fixed plate, the surface of fixed plate is fixedly equipped with first electric push rod, the output of first electric push rod is fixedly equipped with upper mould, electric heating tube is arranged in the upper mould, the upper surface of workbench is fixedly equipped with controller, electric heating tube and first electric push rod are electrically connected with controller, the upper surface of workbench is rotatably connected with lead screw, the circumference of lead screw is threadedly connected with mounting plate. The utility model, by setting drum and sponge cover, before processing silicon rubber, can evenly spread release agent on the surface of lower mould by the aid of sponge cover, avoid the uneven application, covering insufficiently leading to release agent action failure, cause finished product and mould adhesion situation to occur, facilitate subsequent silicon rubber product to be taken out.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a silicone rubber compression molding mold. Background Technology

[0002] Silicone rubber is a high-molecular-weight organosilicon compound formed by copolymerization of siloxanes and other organosilicon monomers. The preparation of high-temperature vulcanized silicone rubber usually uses high-purity octamethylcyclotetrasiloxane as the base raw material, combined with cyclotetrasiloxane containing specific functional groups. After ring-opening copolymerization catalyzed by acid and base catalysts, the catalyst and low-volatile impurities in the system are removed to obtain raw silicone rubber. Subsequently, structural control agents, fumed silica and other reinforcing fillers are added in a rubber mixing mill, and functional additives such as antioxidants are added if necessary for mixing. At the same time, organic peroxides are added as vulcanizing agents. Finally, the product is formed by heating and pressing through a molding die.

[0003] In the process of silicone rubber molding, in order to avoid the silicone rubber from sticking to the mold cavity, a release agent needs to be applied to the surface of the lower mold in advance. However, in the existing technology, manual application is often used. This operation is prone to failure of the release agent due to uneven application and insufficient coverage, resulting in the finished product sticking to the mold and easily causing damage to the product surface during demolding.

[0004] Therefore, a silicone rubber compression molding die is proposed. Utility Model Content

[0005] The purpose of this invention is to solve the problem that uneven application and insufficient coverage of release agent during manual application can lead to the failure of the release agent, causing the finished product to stick to the mold and easily causing damage to the product surface during demolding. Therefore, a silicone rubber compression molding die is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a silicone rubber compression molding die, comprising a worktable, a lower die and a fixing plate fixedly mounted on the upper surface of the worktable, a first electric push rod fixedly mounted on the surface of the fixing plate, an upper die fixedly mounted on the output end of the first electric push rod, an electric heating tube passing through the upper die, a controller fixedly mounted on the upper surface of the worktable, the electric heating tube and the first electric push rod being electrically connected to the controller, a lead screw rotatably connected to the upper surface of the worktable, a mounting plate threadedly connected to the circumferential surface of the lead screw, a mounting plate slidingly passing through the mounting plate, a roller rotatably connected to the mounting plate, a sponge sleeve fixedly fitted on the circumferential surface of the roller, and a liquid storage box fixedly mounted on the upper surface of the worktable.

[0007] The effect achieved by the above components is as follows: by setting up rollers and sponge sleeves, before processing silicone rubber, the release agent can be evenly applied to the surface of the lower mold with the help of the sponge sleeves, avoiding the failure of the release agent due to uneven application or insufficient coverage, which would cause the finished product to stick to the mold, and making it easier to remove the silicone rubber product later.

[0008] Preferably, a guide rod is fixedly mounted on the upper surface of the workbench, and the guide rod slides through the slide plate.

[0009] The effect achieved by the above components is that the guide rod can move along the sliding path of the skateboard.

[0010] Preferably, a spring is fixedly mounted on the upper surface of the mounting plate, and one end of the spring is fixedly connected to the sliding plate.

[0011] The effect achieved by the above components is that the sponge sleeve can be stably pressed against the surface of the lower mold by means of the elastic force of the spring contraction.

[0012] Preferably, the inner wall of the liquid storage box is fixedly fitted with an inclined plate.

[0013] The effect achieved by the above components is that the inclined plate allows the roller to slide out of the liquid storage box easily.

[0014] Preferably, a motor and a retaining ring are fixedly mounted on the upper surface of the worktable, the output end of the motor is fixedly connected to the lead screw, the motor is electrically connected to the controller, and a valve pipe is fixedly connected to the surface of the worktable.

[0015] The above components achieve the following effects: the retaining ring can block the release agent flowing out from the surface of the lower mold, and at the same time, the release agent can be discharged through the valve pipe.

[0016] Preferably, a second electric actuator is fixedly mounted on the surface of the lower mold, the second electric actuator is electrically connected to the controller, a locking plate is fixedly mounted on the output end of the second electric actuator, a first connecting block is fixedly mounted on the side wall of the upper mold, and a second connecting block is fixedly mounted on the side wall of the lower mold.

[0017] The effect achieved by the above components is as follows: activating the second electric actuator causes the locking plate to engage tightly with the first connecting block of the upper mold and the second connecting block of the lower mold, thereby locking and fixing the mold.

[0018] Preferably, a guide plate is fixedly mounted on the side wall of the lower mold, and a sleeve plate is fixedly mounted on the surface of the locking plate, the sleeve plate being slidably mounted on the surface of the guide plate.

[0019] The effect achieved by the above components is that the sleeve plate and the guide plate can restrict the movement path of the locking plate.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting up rollers and sponge sleeves, the release agent can be evenly applied to the surface of the lower mold with the help of the sponge sleeves before processing the silicone rubber. This avoids the release agent from failing due to uneven application or insufficient coverage, which could cause the finished product to stick to the mold and facilitate the subsequent removal of the silicone rubber product. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the workbench of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the lead screw of this utility model; Figure 4 This is a schematic diagram of the structure of the lower mold of this utility model; Figure 5 This is a cross-sectional structural diagram of the upper mold of this utility model.

[0022] Legend: 1. Workbench; 2. Fixed plate; 3. First electric actuator; 4. Upper mold; 5. Lower mold; 6. Heating element; 7. Controller; 8. Lead screw; 9. Slide plate; 10. Mounting plate; 11. Roller; 12. Sponge sleeve; 13. Liquid storage box; 14. Guide rod; 15. Spring; 16. Inclined plate; 17. Motor; 18. Retaining ring; 19. Valve pipe; 20. Second electric actuator; 21. Locking plate; 22. First connecting block; 23. Second connecting block; 24. Guide plate; 25. Sleeve plate. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] like Figures 1-5As shown, this utility model provides a silicone rubber compression molding die, including a worktable 1. A lower die 5 and a fixing plate 2 are fixedly mounted on the upper surface of the worktable 1. A first electric push rod 3 is fixedly mounted on the surface of the fixing plate 2. An upper die 4 is fixedly mounted on the output end of the first electric push rod 3. An electric heating tube 6 is inserted inside the upper die 4. A controller 7 is fixedly mounted on the upper surface of the worktable 1. The electric heating tube 6 and the first electric push rod 3 are electrically connected to the controller 7. A lead screw 8 is rotatably connected to the upper surface of the worktable 1. The circumferential surface of the lead screw 8 is threaded with a mounting bracket. Mounting plate 10, through which mounting plate 10 slides, and roller 11 is rotatably connected within mounting plate 10. Sponge sleeve 12 is fixedly fitted on the circumferential surface of roller 11. Liquid storage box 13 is fixedly mounted on the upper surface of worktable 1. By setting roller 11 and sponge sleeve 12, before processing silicone rubber, the release agent can be evenly applied to the surface of lower mold 5 with the help of sponge sleeve 12, avoiding the failure of the release agent due to uneven application or insufficient coverage, which would cause the finished product to stick to the mold, and making it convenient to remove silicone rubber products later.

[0026] like Figures 1-4 As shown, a guide rod 14 is fixedly mounted on the upper surface of the workbench 1. The guide rod 14 slides through the slide plate 9 and can move along the sliding path of the slide plate 9. A spring 15 is fixedly mounted on the upper surface of the mounting plate 10. One end of the spring 15 is fixedly connected to the slide plate 9. The elastic force of the spring 15 can make the sponge sleeve 12 stably press against the surface of the lower mold 5. An inclined plate 16 is fixedly mounted on the inner wall of the liquid storage box 13. The inclined plate 16 can facilitate the roller 11 to slide out of the liquid storage box 13. A motor 17 and a retaining ring 18 are fixedly mounted on the upper surface of the workbench 1. The output end of the motor 17 is fixedly connected to the lead screw 8. The motor 17 is electrically connected to the controller 7. A valve pipe 19 is fixedly connected to the surface of the workbench 1. The retaining ring 18 can block the release agent flowing out from the surface of the lower mold 5, and the release agent can be discharged through the valve pipe 19.

[0027] like Figure 4 and Figure 5 As shown, a second electric push rod 20 is fixedly mounted on the surface of the lower mold 5. The second electric push rod 20 is electrically connected to the controller 7. A locking plate 21 is fixedly mounted on the output end of the second electric push rod 20. A first connecting block 22 is fixedly mounted on the side wall of the upper mold 4. A second connecting block 23 is fixedly mounted on the side wall of the lower mold 5. When the second electric push rod 20 is activated, the locking plate 21 is tightly engaged with the first connecting block 22 of the upper mold 4 and the second connecting block 23 of the lower mold 5, thereby locking and fixing the mold. A guide plate 24 is fixedly mounted on the side wall of the lower mold 5. A sleeve plate 25 is fixedly mounted on the surface of the locking plate 21. The sleeve plate 25 slides on the surface of the guide plate 24. The sleeve plate 25 and the guide plate 24 cooperate to restrict the movement path of the locking plate 21.

[0028] The overall working principle is as follows: before processing the silicone rubber, the release agent is added to the liquid storage box 13. At this time, the sponge sleeve 12 will absorb the release agent. Then, the controller 7 controls the motor 17 to drive the lead screw 8 to rotate, so that the mounting plate 10 moves smoothly along the guide rod 14. The roller 11 in the mounting plate 10 moves synchronously with the mounting plate 10 and rolls against the surface of the lower mold 5. The inclined plate 16 can facilitate the roller 11 to slide out of the liquid storage box 13. During the rolling process, the sponge sleeve 12 evenly applies the release agent to the surface of the lower mold 5. The spring 15 between the mounting plate 10 and the sliding plate 9 keeps the sponge sleeve 12 in contact with the lower mold 5 through elastic force, ensuring that the release agent coverage is sufficient and the thickness is uniform.

[0029] After the coating is completed, the motor 17 rotates in reverse to reset the mounting plate 10, placing the high-temperature vulcanized silicone rubber material into the cavity of the lower mold 5. The controller 7 controls the first electric push rod 3 to extend and push the upper mold 4 downward until the upper mold 4 and the lower mold 5 are precisely closed. At the same time, the controller 7 activates the second electric push rod 20 to push the locking plate 21, causing the sleeve plate 25 to slide along the guide plate 24, so that the locking plate 21 is tightly engaged with the first connecting block 22 of the upper mold 4 and the second connecting block 23 of the lower mold 5, thereby locking and fixing the mold. The sleeve plate 25 and the guide plate 24 cooperate to restrict the movement path of the locking plate 21. After the mold is closed and locked, the controller 7 controls the heating tube 6 to heat up, so that the silicone rubber material is vulcanized and molded in the cavity. After the molding is completed, the second electric push rod 20 retracts, causing the locking plate 21 to reset and unlock. The first electric push rod 3 retracts and pulls the upper mold 4 upward to open the mold. The retaining ring 18 can block the release agent flowing out from the surface of the lower mold 5, and at the same time, the release agent can be discharged with the help of the valve pipe 19.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A silicone rubber compression molding die, characterized in that: The workbench (1) includes a lower mold (5) and a fixing plate (2) fixedly mounted on the upper surface of the workbench (1). A first electric push rod (3) is fixedly mounted on the surface of the fixing plate (2). An upper mold (4) is fixedly mounted on the output end of the first electric push rod (3). An electric heating tube (6) is inserted inside the upper mold (4). A controller (7) is fixedly mounted on the upper surface of the workbench (1). The electric heating tube (6) and the first electric push rod (3) are electrically connected to the controller (7). A lead screw (8) is rotatably connected to the upper surface of the workbench (1). A mounting plate (10) is threadedly connected to the circumferential surface of the lead screw (8). A mounting plate (10) slides through the mounting plate (10). A roller (11) is rotatably connected inside the mounting plate (10). A sponge sleeve (12) is fixedly fitted on the circumferential surface of the roller (11). A liquid storage box (13) is fixedly mounted on the upper surface of the workbench (1).

2. The silicone rubber compression molding die according to claim 1, characterized in that: The upper surface of the workbench (1) is fixedly fitted with a guide rod (14), which slides through the slide plate (9).

3. The silicone rubber compression molding die according to claim 2, characterized in that: A spring (15) is fixedly mounted on the upper surface of the mounting plate (10), and one end of the spring (15) is fixedly connected to the slide plate (9).

4. The silicone rubber compression molding die according to claim 3, characterized in that: The inner wall of the liquid storage box (13) is fixedly fitted with an inclined plate (16).

5. A silicone rubber compression molding die according to claim 1, characterized in that: The upper surface of the workbench (1) is fixedly equipped with a motor (17) and a retaining ring (18). The output end of the motor (17) is fixedly connected to the lead screw (8). The motor (17) is electrically connected to the controller (7). The surface of the workbench (1) is fixedly connected to a valve pipe (19).

6. A silicone rubber compression molding die according to claim 5, characterized in that: The surface of the lower mold (5) is fixedly fitted with a second electric push rod (20), the second electric push rod (20) is electrically connected to the controller (7), the output end of the second electric push rod (20) is fixedly fitted with a locking plate (21), the side wall of the upper mold (4) is fixedly fitted with a first connecting block (22), and the side wall of the lower mold (5) is fixedly fitted with a second connecting block (23).

7. A silicone rubber compression molding die according to claim 6, characterized in that: The lower mold (5) is fixedly fitted with a guide plate (24) on its side wall, and a sleeve plate (25) is fixedly fitted on the surface of the locking plate (21), and the sleeve plate (25) slides on the surface of the guide plate (24).

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