Silicone rubber injection molding demolding device

Abstract

The utility model relates to the technical field of silicone rubber injection molding demolding, in particular to a silicone rubber injection molding demolding device which comprises a lower mold plate, an upper mold plate and a lower mold plate, the blowing mechanism comprises an air pump arranged at the front end of the lower mold plate, a through hole, a main groove and an air outlet hole are formed in the inner wall of the lower mold plate, the through hole is communicated with the air outlet hole, and the air outlet hole is communicated with the main groove; according to the device, through an air pump, a dispersing pipe, a main groove and an air outlet hole, external air is pumped by the air pump to be compressed and conveyed into all through holes, then the compressed air is comprehensively blown to the end of a silicon rubber workpiece through the through holes, and therefore the silicon rubber workpiece is comprehensively separated from the lower die plate; compared with an existing mode that part of gas blown out by the jet head diffuses and cannot be directly blown into the mold, the mode enables the compressed gas to be completely blown to the silicone rubber workpiece, and the silicone rubber demolding effect is guaranteed.

Description

Technical Field

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

[0002] Silicone rubber injection molding equipment is a key piece of equipment used to produce silicone rubber products. Its design and performance directly affect the quality of the products and production efficiency. After the silicone rubber workpiece is formed in the mold of the injection molding equipment, a demolding device is usually used to remove the formed silicone rubber workpiece from the mold.

[0003] According to the search, the Chinese patent "A Silicone Rubber Injection Molding Demolding Device" (authorization announcement number "CN220464635U") uses an air jet head, hose, intensifier, air pump, threaded rod and servo motor to blow air onto the rubber workpiece molded on the mold during the movement of the air jet head, thus ensuring the demolding efficiency.

[0004] In the aforementioned application, due to the gap between the jet nozzle and the mold, some of the gas blown out by the jet nozzle may not be able to directly enter the mold, thus affecting the demolding effect.

[0005] Therefore, a silicone rubber injection molding demolding device is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a silicone rubber injection molding demolding device to solve the above-mentioned problems, thereby improving the issue that some of the gas blown out by the jet nozzle cannot be directly blown into the mold.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a silicone rubber injection molding demolding device, comprising: a lower template, the top of which is provided with an automatic lifting template; an air blowing mechanism, the air blowing mechanism including an air pump located at the front end of the lower template; the inner wall of the lower template having a through hole, a main groove, and an air outlet, the through hole and the air outlet being connected, the air outlet being connected to the main groove; one end of the air pump being connected to a dispersion pipe, the top end of which penetrates the lower template and extends to the inner wall of the main groove; a sealing rod being slidably connected to the inner wall of the through hole, and a connecting frame being fixedly connected to the bottom end of the sealing rod. Through the connecting frame and the sealing rod, the through hole and the air outlet are made open; through the air pump, dispersion pipe, main groove, and air outlet, the air pump draws in external gas, compresses it, and delivers it to each through hole, thereby enabling the compressed gas to be blown comprehensively to the end of the silicone rubber workpiece through the through holes, thus achieving complete demolding of the silicone rubber workpiece from the lower template and ensuring the effective demolding of the silicone rubber.

[0008] Preferably, a fixed frame is provided on one side of the automatic lifting template. A gear is rotatably connected to the inner wall of the fixed frame, and a rack is meshed with the surface of the gear. A driven block is fixedly connected to the rear end of the rack, and an eccentric wheel is fixedly connected to the surface of the gear. Through the automatic lifting template and the driven block, the rack is driven to move upward after the automatic lifting template moves to a suitable height. This, in turn, causes the gear to drive the eccentric wheel to rotate, thereby causing the connecting frame and the sealing rod to move downward simultaneously. This ensures that the through hole and the vent are automatically opened after the automatic lifting template moves to a suitable height.

[0009] Preferably, a counterweight is fixedly connected to the top of the rack, and the surface of the counterweight is slidably connected to the upper surface of the fixing frame.

[0010] Preferably, a first spring is fixedly connected to the end of the counterweight, and the top end of the first spring is fixedly connected to the end of the fixing frame. Through the first spring and the counterweight, the rack is lowered and reset, so that the highest point of the eccentric wheel is moved away from the first magnetic block during the rack's downward movement.

[0011] Preferably, a first magnetic block is fixedly connected to the top of the connecting frame, and a second spring is fixedly connected to the opposite end of the first magnetic block and the fixed frame.

[0012] Preferably, a second magnetic block is fixedly connected to one side of the fixing frame, and the second magnetic block and the first magnetic block are attracted to each other by opposite poles.

[0013] Preferably, a corrugated pad is fixedly connected to the opposite end of the first magnetic block and the fixing frame. Through the second spring, the second magnetic block and the corrugated pad, the connecting frame drives the sealing rod to move automatically upward, thereby achieving stable sealing of the inner wall of the through hole by the sealing rod and preventing silicone rubber liquid from being injected into the through hole.

[0014] The beneficial effects of the utility model are:

[0015] By using an air pump, a dispersion pipe, a main trough, and an air outlet, the air pump draws in external gas, compresses it, and delivers it to each through hole. This allows the compressed gas to be blown all the way to the end of the silicone rubber workpiece, thus enabling the silicone rubber workpiece to be completely removed from the lower mold. Compared to existing jet nozzles where some gas diffuses and cannot be directly blown into the mold, this method ensures that the compressed gas is blown all the way to the silicone rubber workpiece, guaranteeing the silicone rubber demolding effect.

[0016] By using an automatic lifting template and a driven block, the automatic lifting template moves up to a suitable height, driving the rack to move up. This, in turn, causes the gear to drive the eccentric wheel to rotate, thereby causing the connecting frame and the sealing rod to move down simultaneously. This ensures that the automatic lifting template automatically opens the through hole and the air outlet after moving up to a suitable height. Attached Figure Description

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the air pump, dispersion tube, and connecting frame structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the air blowing mechanism of this utility model;

[0020] Figure 4 for Figure 2 A magnified view of middle A;

[0021] Figure 5 for Figure 3 A magnified view of B in the middle.

[0022] In the diagram: 1. Automatic lifting template; 2. Lower template; 3. Counterweight; 4. First spring; 5. Air blowing mechanism; 51. Air outlet; 52. Through hole; 53. Main groove; 54. Dispersion pipe; 55. Air pump; 56. Sealing rod; 57. Connecting frame; 58. Fixing frame; 59. Gear; 510. Rack; 511. Driven block; 512. Eccentric wheel; 513. Second spring; 514. Corrugated pad; 515. First magnet; 516. Second magnet. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] When implementing: Figure 1-5 As shown, the silicone rubber injection molding demolding device includes: a lower template 2, with an automatic lifting template 1 on the top of the lower template 2; an air blowing mechanism 5, which includes an air pump 55 located at the front end of the lower template 2; a through hole 52, a main groove 53, and an air outlet 51 opened on the inner wall of the lower template 2; the through hole 52 is connected to the air outlet 51, and the air outlet 51 is connected to the main groove 53; one end of the air pump 55 is connected to a dispersion pipe 54; the top end of the dispersion pipe 54 penetrates the lower template 2 and extends to the inner wall of the main groove 53; a sealing rod 56 is slidably connected to the inner wall of the through hole 52; and a connecting frame 57 is fixedly connected to the bottom end of the sealing rod 56.

[0025] The bottom of the lower template 2 is equipped with an injection molding machine, and a control panel is provided on one side of the injection molding machine. The surface of the air pump 55 is fixedly connected to the front end of the injection molding machine. The automatic lifting template 1 includes an electric push rod and an upper template. The surface of the electric push rod is fixedly connected to the upper surface of the injection molding machine, and the telescopic end of the electric push rod is fixedly connected to the top of the upper template.

[0026] When silicone rubber needs to be demolded after injection molding, the electric push rod is automatically activated via the control panel. The telescopic end of the electric push rod moves downwards, causing the upper mold platen to move down to a suitable height. Afterwards, the electric push rod automatically closes. Following the process set on the control panel, the injection molding machine injects molten silicone rubber into the upper mold platen. The molten silicone rubber then flows through the upper mold platen to the lower mold platen 2. After injection molding is complete, the molten silicone rubber is molded in the lower mold platen 2. The electric push rod is then automatically activated, causing the upper mold platen to move up to a suitable height, and then... The moving connecting frame 57 moves down, and the moving connecting frame 57 moves down multiple sealing rods 56 at the same time to a suitable height, so that the air outlet 51 and the through hole 52 are open. At this time, the air pump 55 is manually turned on. The air pump 55 draws in the outside gas, compresses it and delivers it to the dispersion pipe 54. The dispersion pipe 54 guides the compressed gas to the main tank 53. The compressed gas in the main tank 53 is guided to each air outlet 51. The compressed gas in the air outlet 51 is blown to the end of the silicone rubber through the through hole 52, so that the silicone rubber is separated from the lower template 2.

[0027] like Figure 5 As shown, a fixed frame 58 is provided on one side of the automatic lifting template 1. A gear 59 is rotatably connected to the inner wall of the fixed frame 58. A rack 510 is meshed with the surface of the gear 59. A driven block 511 is fixedly connected to the rear end of the rack 510. An eccentric wheel 512 is fixedly connected to the surface of the gear 59. A first magnetic block 515 is fixedly connected to the top of the connecting frame 57. A second spring 513 is fixedly connected to the opposite end of the first magnetic block 515 and the fixed frame 58. A second magnetic block 516 is fixedly connected to one side of the fixed frame 58. The second magnetic block 516 and the first magnetic block 515 attract each other with opposite poles. A corrugated pad 514 is fixedly connected to the opposite end of the first magnetic block 515 and the fixed frame 58. The corrugated pad 514 is a polyurethane component.

[0028] After the upper template moves up to a suitable height, it contacts the bottom of the driven block 511. At this time, the upper template continues to move up, which in turn pushes the driven block 511 and the rack 510 to move up. The rack 510 moves up and drives the gear 59 to rotate. The rotation of the gear 59 drives the eccentric wheel 512 to rotate, so that the highest point of the eccentric wheel 512 touches the first magnetic block 515. This causes the first magnetic block 515 to move down away from the second magnetic block 516 and squeeze the second spring 513 and the corrugated pad 514. The downward movement of the first magnetic block 515 causes the connecting frame 57 and the sealing rod 56 to move down simultaneously.

[0029] like Figure 5As shown, a counterweight 3 is fixedly connected to the top of the rack 510, the surface of the counterweight 3 is slidably connected to the upper surface of the fixed frame 58, and a first spring 4 is fixedly connected to the end of the counterweight 3, with the top end of the first spring 4 fixedly connected to the end of the fixed frame 58.

[0030] At the top of the upper template, away from the bottom of the driven block 511, the elastic force of the first spring 4 and the weight of the counterweight 3 push the rack 510 downward. The downward movement of the rack 510 drives the gear 59 and the eccentric wheel 512 to rotate, so that the highest point of the eccentric wheel 512 is away from the first magnetic block 515. At this time, the elastic force of the second spring 513 and the corrugated pad 514 pushes the first magnetic block 515 upward, so that the first magnetic block 515 drives the connecting frame 57 and the sealing rod 56 to move upward and be attracted into the second magnetic block 516, so that the sealing rod 56 stably seals the through hole 52.

[0031] When this utility model is in use, the automatic lifting template 1 moves up to a suitable height and contacts the bottom of the driven block 511. At this time, the automatic lifting template 1 continues to move up, which in turn pushes the driven block 511 and the rack 510 to move up, thereby causing the gear 59 and the eccentric wheel 512 to rotate, so that the highest point of the eccentric wheel 512 contacts the first magnetic block 515, causing the first magnetic block 515 to move down and drive the connecting frame 57 and the sealing rod 56 to move down to a suitable height at the same time, so that the air outlet 51 and the through hole 52 are connected. At this time, the air pump 55 is manually turned on. The air pump 55 draws in the external gas, compresses it and delivers it to the dispersion pipe 54. The dispersion pipe 54 guides the compressed gas to the main groove 53 respectively. The compressed gas in the main groove 53 is guided to each air outlet 51 respectively. The compressed gas in the air outlet 51 is blown to the end of the silicone rubber through the through hole 52, so that the silicone rubber is separated from the lower template 2.

[0032] It should be noted that the upper template, electric push rod, injection molding machine, control panel, air pump 55, lower template 2, second magnetic block 516 and first magnetic block 515 mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the electric push rod, injection molding machine, control panel and air pump 55 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A silicone rubber injection molding demolding device, characterized in that, include: The lower template (2) is provided with an automatic lifting template (1) at the top of the lower template (2); The air blowing mechanism (5) includes an air pump (55) located at the front end of the lower template (2). The inner wall of the lower template (2) is provided with a through hole (52), a main groove (53) and an air outlet (51). The through hole (52) is connected to the air outlet (51), and the air outlet (51) is connected to the main groove (53). One end of the air pump (55) is connected to a dispersion tube (54). The top end of the dispersion tube (54) penetrates the lower template (2) and extends to the inner wall of the main groove (53). A sealing rod (56) is slidably connected to the inner wall of the through hole (52), and a connecting frame (57) is fixedly connected to the bottom end of the sealing rod (56).

2. The silicone rubber injection molding demolding device according to claim 1, characterized in that: The automatic lifting template (1) has a fixed frame (58) on one side. A gear (59) is rotatably connected to the inner wall of the fixed frame (58). A rack (510) is meshed with the surface of the gear (59). A driven block (511) is fixedly connected to the rear end of the rack (510). An eccentric wheel (512) is fixedly connected to the surface of the gear (59).

3. The silicone rubber injection molding demolding device according to claim 2, characterized in that: A counterweight (3) is fixedly connected to the top of the rack (510), and the surface of the counterweight (3) is slidably connected to the upper surface of the fixing frame (58).

4. The silicone rubber injection molding demolding device according to claim 3, characterized in that: The first spring (4) is fixedly connected to the end of the counterweight (3), and the top end of the first spring (4) is fixedly connected to the end of the fixing frame (58).

5. The silicone rubber injection molding demolding device according to claim 2, characterized in that: The top of the connecting frame (57) is fixedly connected to a first magnetic block (515), and the opposite end of the first magnetic block (515) and the fixed frame (58) is fixedly connected to a second spring (513).

6. The silicone rubber injection molding demolding device according to claim 5, characterized in that: A second magnetic block (516) is fixedly connected to one side of the fixing frame (58), and the second magnetic block (516) and the first magnetic block (515) are attracted to each other by opposite poles.

7. The silicone rubber injection molding demolding device according to claim 5, characterized in that: The first magnetic block (515) is fixedly connected to the opposite end of the fixing frame (58) with a corrugated pad (514).

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