Silica gel mold demolding mechanism

Abstract

The utility model discloses a silica gel mold demolding mechanism, which relates to the technical field of molds, and comprises a bottom plate, support legs, a lower mold, a top plate, an upper mold, an injection molding pipe and a reset demolding structure, the support legs are fixedly connected with the bottom plate and the lower mold, the top plate is connected with the bottom plate through a second electric push rod, and the bottom end of the top plate is provided with the upper mold matched with a mold cavity; the injection molding pipe penetrates through the upper mold to be used for injection molding, the reset demolding structure is arranged in a mold cavity and comprises a plate groove, a positioning ring groove, a bottom groove, a spring cavity, a movable cavity and the like, and ejection and automatic reset of the silica gel mold are achieved through cooperative work of a connecting rod, a ring plate, a reset spring and a first electric push rod. In addition, through the design of a sliding barrel, a limiting plate, a sliding rod and a limiting ring, stable movement of the top plate and the lower mold in the vertical direction is ensured, and deviation and shaking are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a demolding mechanism for a silica gel mold. Background Art

[0002] At present, room temperature curable silica gel has been widely used in the fields of electronics, medical treatment, automobiles, etc. However, in the process of molding silica gel molds, traditional demolding methods often have problems such as complex operation, low efficiency, and easy damage to products.

[0003] In the silica gel mold demolding mechanism described in the patent with the existing patent publication number CN219360190U, by setting an oil pot, the oil injection holes in the oil pot can facilitate spraying anti-sticking oil on the inner wall of the mold cavity before injection molding, reducing the adhesion degree between the silica gel mold and the inner wall of the mold cavity during injection molding. And under the action of the cavity, long rod, telescopic spring, movable block, first connecting plate, second connecting plate, connecting rod, movable plate, ejector rod and ejector plate in the lower mold, it is convenient to eject the injection-molded silica gel mold when the mold is opened, making the demolding of the silica gel mold more convenient and improving the practicability of the injection mold.

[0004] However, the above structure can only achieve a single ejection function. After ejecting and demolding the silica gel mold, the ejector rod and the ejector plate cannot be reset, affecting the production efficiency of subsequent silica gel molds.

[0005] Based on this, a demolding mechanism for a silica gel mold is now provided, which can eliminate the drawbacks of the existing mechanism. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a demolding mechanism for a silica gel mold to solve the problem that the existing structure can only achieve a single ejection function. After ejecting and demolding the silica gel mold, the ejector rod and the ejector plate cannot be reset, affecting the production efficiency of subsequent silica gel molds.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A demolding mechanism for a silica gel mold includes a bottom plate. Four legs are fixedly installed at the top end of the bottom plate, and the other ends of the legs are fixedly connected to the bottom corners of the lower mold.

[0009] A mold cavity is opened at the top end of the leg. Two second electric push rods are symmetrically fixed on both sides of the top end of the bottom plate. The telescopic ends of the two second electric push rods are fixedly connected to a top plate. An upper mold matching the mold cavity is fixedly installed at the bottom end of the top plate.

[0010] An injection pipe is fixedly installed at the middle position of the top end of the top plate. The bottom end of the injection pipe penetrates through to the bottom end of the upper mold, and a sealing cover is clamped at the top end of the injection pipe.

[0011] It further includes a reset and demolding component, which is arranged inside the mold cavity and can automatically reset after ejecting the silicone mold from demolding.

[0012] Based on the above technical solutions, the present utility model further provides the following optional technical solutions:

[0013] In an optional solution: the reset and demolding component includes a plate groove, a positioning ring groove, a bottom groove, a spring cavity, and a movable cavity. The movable cavity is opened in the middle of the bottom end of the lower mold, the spring cavity is opened inside the lower mold and above the movable cavity, the bottom groove is opened on the spring cavity, the positioning ring groove is located outside the bottom groove, the plate groove is above the positioning ring groove and the bottom groove and is opened inside the mold cavity. The plate groove, the bottom groove, the spring cavity, the movable cavity and the inside of the plate groove and the positioning ring groove are all communicated. An activity plate, an ejecting plate, and a bottom block are respectively slidably installed in the movable cavity, the plate groove, and the bottom groove. A connecting component is slidably installed in the spring cavity. Both ends of the connecting component respectively extend into the bottom groove and the movable cavity and are fixedly connected to the bottom block and the activity plate. A driving component is installed at the bottom end of the activity plate.

[0014] In an optional solution: the connecting component includes a connecting rod and a ring plate. The connecting rod is installed inside the bottom groove, the spring cavity, and the movable cavity. Both ends of the connecting rod respectively extend into the plate groove and the movable cavity and are connected to the ejecting plate and the activity plate. The outer wall of the connecting rod is fixedly connected to the ring plate. The outer wall of the ring plate is slidably connected to the inner wall of the spring cavity. The upper end of the ring plate is fixedly connected to a rebounding unit, and the other end of the rebounding unit is fixedly connected to the inner wall of the spring cavity.

[0015] In an optional solution: the rebounding unit includes a reset spring, which is installed inside the spring cavity. Both ends of the reset spring are respectively fixedly connected to the upper end of the ring plate and the inner wall of the spring cavity.

[0016] In an optional solution: the driving component includes a first electric push rod, which is installed at the middle position of the top end of the bottom plate. The telescopic end of the first electric push rod extends into the movable cavity and is fixedly connected to the activity plate.

[0017] In an optional solution: a positioning ring block is fixedly installed at the bottom end of the ejecting plate. The positioning ring block is located outside the bottom block and is matched with the positioning ring groove.

[0018] In an optional solution: sliding cylinders are fixedly installed at the corners of the top end of the bottom plate. The inner wall of the sliding cylinder is slidably connected to the outer wall of the limiting plate. The upper end of the limiting plate is fixedly connected to a sliding rod, and the upper end of the sliding rod is fixedly connected to the top plate.

[0019] In an optional solution: a limiting ring is fixedly installed at the top end of the sliding cylinder. The inner wall of the limiting ring is slidably connected to the outer wall of the sliding rod. The inner diameter of the limiting ring is smaller than the outer diameter of the limiting plate.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. The present utility model ensures the vertical and stable movement of the top plate and the lower mold through the cooperation of the sliding cylinder, the limiting plate, the sliding rod, and the limiting ring, preventing deviation and shaking. The sliding rod slides within the sliding cylinder and is restricted within a specific range by the limiting ring, ensuring the overall stability and safety of the structure.

[0022] 2. Through the elastic force of the return spring, the present utility model enables the return and demolding components to achieve rapid and accurate return, preparing for the injection molding demolding cycle. This automatic return function improves efficiency and reduces labor intensity. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the present utility model.

[0024] Figure 2 is a schematic structural diagram of the front-end position of the present utility model.

[0025] Figure 3 is a schematic structural diagram of the interior of the lower mold of the present utility model.

[0026] Figure 4 is a schematic structural diagram of the return and demolding components of the present utility model.

[0027] Figure 5 is a schematic structural diagram of the connection components of the present utility model.

[0028] Figure 6 is a schematic structural diagram of the sliding cylinder and the sliding rod of the present utility model.

[0029] Annotation of Reference Numerals in the Drawings: 11, bottom plate; 12, support legs; 13, lower mold; 14, mold cavity; 15, plate groove; 16, positioning ring groove; 17, bottom groove; 18, spring cavity; 19, movable cavity; 20, first electric push rod; 21, movable plate; 22, connecting rod; 23, ring plate; 24, return spring; 25, bottom block; 26, positioning ring block; 27, ejector plate; 28, top plate; 29, injection pipe; 30, cover; 31, upper mold; 32, second electric push rod; 33, sliding cylinder; 34, limiting ring; 35, limiting plate; 36, sliding rod. Detailed Embodiment

[0030] In order to make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] In one embodiment, as Figures 1-6 shown, a silicone mold demolding mechanism includes a bottom plate 11, and four support legs 12 are fixedly installed at the top end of the bottom plate 11. The other ends of the support legs 12 are fixedly connected to the bottom corners of the lower mold 13;

[0032] A mold cavity 14 is provided at the top end of the outrigger 12. On both sides of the top end of the bottom plate 11, two second electric push rods 32 are symmetrically fixed. The telescopic ends of the two second electric push rods 32 are fixedly connected to a top plate 28. A top mold 31 matching the mold cavity 14 is fixedly installed at the bottom end of the top plate 28.

[0033] An injection molding pipe 29 is fixedly installed at the middle position of the top end of the top plate 28. The bottom end of the injection molding pipe 29 penetrates to the bottom end of the top mold 31. A cover 30 is clamped at the top end of the injection molding pipe 29.

[0034] It further includes a reset and demolding component, which is arranged inside the mold cavity 14 and can automatically reset after the silicone mold is ejected for demolding.

[0035] In this embodiment, the second electric push rod 32 is started, and its telescopic end moves downward, driving the top plate 28 and the top mold 31 to move downward until the top mold 31 is in close contact with the bottom mold 13 to form a closed mold cavity 14. The cover 30 at the top end of the injection molding pipe 29 is opened, and liquid silicone is injected into the mold cavity 14 through the injection molding pipe 29. After the injection molding is completed, the cover 30 is quickly covered to prevent silicone leakage.

[0036] The liquid silicone cools and cures in the mold cavity 14 for a period of time to form a solid silicone product.

[0037] After the silicone product is cured, the reset and demolding component is started to eject the silicone product from the mold cavity 14, separating the silicone mold from the mold. After demolding, the reset and demolding component resets to the initial state, ready for the next injection molding and demolding cycle.

[0038] After the silicone product is demolded, it can be taken out from the mold cavity 14 for subsequent processing or inspection.

[0039] In one embodiment, as Figures 3-4 shown, the reset and demolding component includes a plate groove 15, a positioning ring groove 16, a bottom groove 17, a spring cavity 18, and a movable cavity 19. The movable cavity 19 is opened in the middle of the bottom end of the bottom mold 13. The spring cavity 18 is opened inside the bottom mold 13 and is located above the movable cavity 19. The bottom groove 17 is opened on the spring cavity 18. The positioning ring groove 16 is located outside the bottom groove 17. The plate groove 15 is above the positioning ring groove 16 and the bottom groove 17 and is opened inside the mold cavity 14. The plate groove 15, the bottom groove 17, the spring cavity 18, the movable cavity 19, and the inside of the plate groove 15 and the positioning ring groove 16 are all communicated. An activity plate 21, an ejection plate 27, and a bottom block 25 are respectively slidably installed in the movable cavity 19, the plate groove 15, and the bottom groove 17. A connection component is slidably installed in the spring cavity 18. Both ends of the connection component respectively extend into the bottom groove 17 and the movable cavity 19 and are fixedly connected to the bottom block 25 and the activity plate 21. A driving component is installed at the bottom end of the activity plate 21.

[0040] The reset and demolding component includes a plate groove 15, a positioning ring groove 16, a bottom groove 17, a spring cavity 18, a movable cavity 19, and a movable plate 21, an ejector plate 27, a bottom block 25 and a connection assembly slidably installed in these spaces. These parts cooperate together to achieve the demolding and reset functions of the silicone product.

[0041] In one embodiment, as Figures 4-5 shown, the connection assembly includes a connecting rod 22 and a ring plate 23. The connecting rod 22 is installed inside the bottom groove 17, the spring cavity 18, and the movable cavity 19. Both ends of the connecting rod 22 extend into the plate groove 15 and the movable cavity 19 respectively and are connected to the ejector plate 27 and the movable plate 21. The outer wall of the connecting rod 22 is fixedly connected to the ring plate 23. The outer wall of the ring plate 23 is slidably connected to the inner wall of the spring cavity 18. The upper end of the ring plate 23 is fixedly connected to a return unit, and the other end of the return unit is fixedly connected to the inner wall of the spring cavity 18.

[0042] The connecting rod 22 is responsible for converting the linear motion of the movable plate 21 into the linear motion of the ejector plate 27, thereby realizing the ejection of the silicone product; the ring plate 23 not only provides sliding support for the connecting rod 22 in the spring cavity 18, but also serves as a connection point for the return unit, transmitting the elastic force of the return unit to the connecting rod 22, and then realizing the reset function.

[0043] In one embodiment, as Figures 4-5 shown, the return unit includes a return spring 24. The return spring 24 is installed inside the spring cavity 18. Both ends of the return spring 24 are fixedly connected to the upper end of the ring plate 23 and the inner wall of the spring cavity 18 respectively.

[0044] When the demolding process starts, the movable plate 21 moves upward under the action of the driving assembly, drives the ring plate 23 and the ejector plate 27 to move upward synchronously through the connecting rod 22. At this time, the return spring 24 is compressed and stores energy; when the demolding is completed, the driving assembly works in the reverse direction, and the return spring 24 starts to release the stored energy, pushing the ring plate 23 and the connecting rod 22 to move downward, and then driving the ejector plate 27 and the movable plate 21 to reset.

[0045] In one embodiment, as Figures 1-2 、 Figure 4 shown, the driving assembly includes a first electric push rod 20. The first electric push rod 20 is installed at the middle position of the top end of the bottom plate 11. The telescopic end of the first electric push rod 20 extends into the movable cavity 19 and is fixedly connected to the movable plate 21.

[0046] When the silicone product is cured in the mold cavity 14, the first electric push rod 20 starts to work and pushes the movable plate 21 upward. The movable plate 21 drives the ejection plate 27 to move downward synchronously through the connecting rod 22 until the ejection plate 27 contacts and ejects the silicone product. This ejection method is fast and effective, and can ensure that the silicone product is smoothly removed from the mold cavity e.

[0047] In one embodiment, Figures 3-5 As shown, a positioning ring block 26 is fixedly mounted on the bottom end of the ejection plate 27 . The positioning ring block 26 is located outside the bottom block 25 , and the positioning ring block 26 matches the positioning ring groove 16 .

[0048] When the demoulding component is reset and in operation, the positioning ring block 26 slides along the positioning ring groove 16 during the ejection process to ensure smooth and accurate ejection.

[0049] In one embodiment, Figure 6 As shown, a slide cylinder 33 is fixedly installed at the top corner of the bottom plate 11, the inner wall of the slide cylinder 33 is slidably connected to the outer wall of the limit plate 35, the upper end of the limit plate 35 is fixedly connected to the slide rod 36, and the upper end of the slide rod 36 is fixedly connected to the top plate 28.

[0050] The slide cylinder 33, the limit plate 35 and the slide rod 36 cooperate to ensure the stable movement of the top plate 28 and the lower mold 13 in the vertical direction, and prevent deviation and shaking.

[0051] In one embodiment, Figure 6 As shown, a limit ring 34 is fixedly installed on the top of the slide cylinder 33 , the inner wall of the limit ring 34 is slidably connected to the outer wall of the slide rod 36 , and the inner diameter of the limit ring 34 is smaller than the outer diameter of the limit plate 35 .

[0052] The slide rod 36 slides in the slide cylinder 33 and is limited within a specific range by the limit ring 34, thereby ensuring the overall stability and safety of the structure.

[0053] The above embodiment discloses a silicone mold demolding mechanism, wherein the second electric push rod 32 is started to move its telescopic end downward, driving the top plate 28 and the upper mold 31 to move downward until the upper mold 31 is tightly fitted with the lower mold 13 to form a closed mold cavity 14, and the cover 30 at the top of the injection tube 29 is opened to inject liquid silicone into the mold cavity 14 through the injection tube 29. After the injection molding is completed, the cover 30 is quickly covered to prevent silicone leakage.

[0054] The liquid silicone is cooled and solidified in the mold cavity 14 for a period of time to form a solid silicone product.

[0055] After the silicone product is cured, the demolding operation is ready to be carried out. The movable plate 21 moves upward under the push of the first electric push rod 20, drives the ejector plate 27 and the bottom block 25 to move synchronously through the connecting rod 22. As the movable plate 21 continues to move upward, the ejector plate 27 ejects the silicone product from the bottom of the mold cavity 14. The positioning ring block 26 slides along the positioning ring groove 16 during the ejection process to ensure the smoothness and accuracy of the ejection action.

[0056] After the silicone product is completely ejected, the first electric push rod 20 starts to contract, driving the movable plate 21 to move downward. At this time, the return spring 24 begins to play a role, pulling the ejector plate 27 and the bottom block 25 back to the initial position through the ring plate 23 and the connecting rod 22. The elastic force of the return spring 24 ensures the rapid and accurate reset of the reset demolding component, preparing for the next injection molding and demolding cycle.

[0057] The cooperation of the sliding cylinder 33, the limiting plate 35, the sliding rod 36 and the limiting ring 34 ensures the stable movement of the top plate 28 and the lower mold 13 in the vertical direction, preventing deviation and shaking; the sliding rod 36 slides in the sliding cylinder 33 and is restricted within a specific range by the limiting ring 34, ensuring the overall stability and safety of the structure.

[0058] After the silicone product is removed from the mold cavity 14, subsequent processes such as picking up the parts, inspection and packaging can be carried out; at the same time, the automatic reset of the reset demolding component provides convenience and efficiency for the next injection molding and demolding operations.

[0059] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A silicone mold demolding mechanism, including a bottom plate (11), four legs (12) are fixedly installed at the top end of the bottom plate (11), and the other ends of the legs (12) are fixedly connected to the bottom corners of the lower mold (13); It is characterized in that A mold cavity (14) is opened at the top end of the leg (12), two second electric push rods (32) are symmetrically and fixedly installed on both sides of the top end of the bottom plate (11), the telescopic ends of the two second electric push rods (32) are fixedly connected to a top plate (28), and an upper mold (31) matching the mold cavity (14) is fixedly installed at the bottom end of the top plate (28); An injection pipe (29) is fixedly installed at the middle position of the top end of the top plate (28), the bottom end of the injection pipe (29) penetrates to the bottom end of the upper mold (31), and a sealing cover (30) is clamped at the top end of the injection pipe (29); It also includes a reset demolding component, and the reset demolding component is arranged inside the mold cavity (14).

2. The silicone mold demolding mechanism according to claim 1, characterized in that, The reset demolding component includes a plate groove (15), a positioning ring groove (16), a bottom groove (17), a spring cavity (18), and a movable cavity (19). The movable cavity (19) is opened in the middle of the bottom end of the lower mold (13), the spring cavity (18) is opened inside the lower mold (13) and is located above the movable cavity (19), the bottom groove (17) is opened on the spring cavity (18), the positioning ring groove (16) is located outside the bottom groove (17), the plate groove (15) is above the positioning ring groove (16) and the bottom groove (17) and is opened inside the mold cavity (14). The plate groove (15), the bottom groove (17), the spring cavity (18), the movable cavity (19) and the inside of the plate groove (15) and the positioning ring groove (16) are all communicated. A movable plate (21), a top plate (27), and a bottom block (25) are respectively slidably installed in the movable cavity (19), the plate groove (15), and the bottom groove (17). A connecting component is slidably installed in the spring cavity (18). Both ends of the connecting component extend into the bottom groove (17) and the movable cavity (19) respectively and are connected to the bottom block (25) and the movable plate (21). A driving component is installed at the bottom end of the movable plate (21).

3. A silicone mold demolding mechanism according to claim 2, characterized in that, The connecting component includes a connecting rod (22) and a ring plate (23). The connecting rod (22) is installed inside the bottom groove (17), the spring cavity (18), and the movable cavity (19). Both ends of the connecting rod (22) extend into the plate groove (15) and the movable cavity (19) respectively and are fixedly connected to the top plate (27) and the movable plate (21). The outer wall of the connecting rod (22) is fixedly connected to the ring plate (23). The outer wall of the ring plate (23) is slidably connected to the inner wall of the spring cavity (18). The upper end of the ring plate (23) is fixedly connected to a spring return unit, and the other end of the spring return unit is fixedly connected to the inner wall of the spring cavity (18).

4. The silicone mold demolding mechanism according to claim 3, characterized in that, The spring return unit includes a return spring (24). The return spring (24) is installed inside the spring cavity (18). Both ends of the return spring (24) are fixedly connected to the upper end of the ring plate (23) and the inner wall of the spring cavity (18) respectively.

5. The demolding mechanism of a silica gel mold according to claim 2, characterized in that, The driving component includes a first electric push rod (20), and the first electric push rod (20) is installed at the middle position of the top end of the bottom plate (11). The telescopic end of the first electric push rod (20) extends into the inner part of the movable cavity (19) and is fixedly connected to the movable plate (21).

6. The demolding mechanism of a silicone mold according to claim 2, characterized in that, A positioning ring block (26) is fixedly installed at the bottom end of the ejector plate (27). The positioning ring block (26) is located outside the bottom block (25), and the positioning ring block (26) is matched with the positioning ring groove (16).

7. A silicone mold demolding mechanism according to claim 1, characterized in that, Sliding cylinders (33) are fixedly installed at the corners of the top end of the bottom plate (11). The inner wall of the sliding cylinder (33) is slidably connected to the outer wall of the limiting plate (35). The upper end of the limiting plate (35) is fixedly connected to the sliding rod (36), and the upper end of the sliding rod (36) is fixedly connected to the top plate (28).

8. A silicone mold demolding mechanism according to claim 7, characterized in that, A limiting ring (34) is fixedly installed at the top end of the sliding cylinder (33). The inner wall of the limiting ring (34) is slidably connected to the outer wall of the sliding rod (36), and the inner diameter of the limiting ring (34) is smaller than the outer diameter of the limiting plate (35).

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