Vulcanizing mold with high sealing performance

Abstract

The utility model discloses a high-sealing vulcanizing mold which comprises a device body, the top end of the device body is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a transverse plate, the bottom end of the transverse plate is fixedly connected with an upper mold through a screw, and a device for heating and vulcanizing is arranged in the upper mold. The high-sealing-performance vulcanization mold further comprises an extrusion air bag fixedly connected in a groove formed in the bottom end of the upper mold, the extrusion air bag communicates with the sealing air bag through a pipeline, a fixing block is fixedly connected to the bottom end of the device body, a connecting rod is rotatably installed on the side wall of the fixing block, a cavity is formed in the fixing block, and a buffer rod is slidably connected in the cavity. According to the device, high-efficiency sealing can be carried out after mold closing, rubber overflowing during heating vulcanization of rubber is prevented, it is guaranteed that rubber materials are fully injected into a mold cavity, the product quality is improved, meanwhile, the effect of cushioning can be achieved, impact force generated during mold closing is reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a high-sealability vulcanization mold. Background Art

[0002] Vulcanization molds are metal models used for vulcanization molding of rubber products. They are mainly used to produce various types of rubber products, such as tires, sealing strips, automotive rubber products, etc. They are suitable for vulcanized products with special shapes and high demand.

[0003] Publication No. "CN214082537U" discloses a vulcanization mold, including a base plate and an ejection mechanism; the base plate: the upper end of the base plate is fixedly connected with symmetrically distributed guide columns, the upper surfaces of the guide columns are fixedly connected with the lower surface of the top plate, the lower ends of the outer arc surfaces of the guide columns are slidably connected with the four corners of the lower template, the upper surface of the lower template is provided with a mold cavity, the lower template is provided with an array of heating plates, the heating plates are located at the lower end of the mold cavity of the lower template, the lower surface of the top plate is fixedly connected with a first electric push rod, the lower surface of the first electric push rod is fixedly connected with an upper template, the four corners of the upper template are respectively slidably connected with the corresponding outer arc surfaces of the guide columns, the vulcanization mold is convenient for controlling the position of vulcanization, improving the strength of local vulcanization, facilitating ejection and unloading, improving product vulcanization efficiency, ensuring product quality, and extending the service life of the equipment, but there are still certain shortcomings in use.

[0004] Although the above device can play a role in cushioning when closing the mold, the cushioning effect is poor only through the elasticity of the spring, and the mold will cause wear after long-term operation, resulting in poor sealing, and rubber overflow during mold pressing, which seriously affects product quality. Utility Model Content

[0005] The utility model aims to provide a highly sealed vulcanization mold to solve the problems raised in the above-mentioned background technology that the shock absorbing effect is poor in the current market only by the elasticity of the spring, and the mold will cause wear after long-term work, resulting in poor sealing, and rubber overflow during molding, which seriously affects product quality.

[0006] To achieve the above object, the utility model provides the following technical solution: a high-sealability vulcanization mold, comprising a device body, the top of the device body is fixedly connected to an electric push rod, the output end of the electric push rod is fixedly connected to a horizontal plate, and the bottom end of the horizontal plate is fixedly connected to an upper mold by screws, and a device for heating and vulcanization is arranged inside the upper mold;

[0007] Also includes:

[0008] An extrusion airbag is fixedly connected in the groove opened at the bottom end of the upper mold, and the extrusion airbag is connected with the sealing airbag through a pipeline;

[0009] The upper end surface of the device body is fixedly connected with a fixed block, a connecting rod is rotatably installed on the side wall of the fixed block, and a cavity is opened in the fixed block, a buffer rod is slidably connected in the cavity, and a buffer airbag is sleeved on the buffer rod, and a lower mold is fixedly connected to the top of the buffer rod, and a slider is rotatably connected to the end of the connecting rod away from the fixed block, and a first magnet is fixedly installed on the side wall of the slider;

[0010] A mold cavity is opened in the middle of the top of the lower mold, and a sealing rod is rotatably installed in the groove on the side of the lower mold, and a gear is rotatably installed inside the lower mold. A sealing block is slidably connected in the groove at the bottom end of the mold cavity, and a rack is fixedly connected to the bottom end of the sealing block, and a second magnet is fixedly connected in the groove at the bottom end of the lower mold.

[0011] Preferably, two groups of the fixing blocks are symmetrically arranged about the lower mold, and the fixing blocks are slidably connected to the buffer rods, and a compression spring is fixedly nested on the buffer rods, and the bottom end of the compression spring is fixedly connected to the outer wall of the top end of the fixing blocks.

[0012] Preferably, the buffer airbag is connected to the outside and the bottom groove of the mold cavity through a one-way flow pipe, and the buffer airbag is located in the cavity. The side height of the sealing block is greater than the outlet diameter of the pipe, and two groups of sealing blocks are symmetrically arranged about the mold cavity.

[0013] Preferably, the sealing rod is arranged in an "L"-shaped structure, and a torsion spring for providing reset is connected between the axial end of the sealing rod and the inner wall of the lower mold, and the sealing rod, the extrusion airbag and the sealing airbag are arranged in two groups symmetrically about the upper mold.

[0014] Preferably, the slider is slidably connected to the inner wall of the groove at the bottom end of the lower mold, and a tooth block meshing with the bottom end of the gear is provided at the top of the slider.

[0015] Preferably, the first magnet and the second magnet are aligned, and the opposite sides of the first magnet and the second magnet have the same magnetic poles.

[0016] Preferably, the rack is slidably connected to the inner wall of the lower mold, and the rack is meshed with the side edge of the gear.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the high-sealability vulcanization mold can be efficiently sealed after mold closing, preventing rubber from overflowing during heating and vulcanization, ensuring that the rubber is fully injected into the mold cavity, improving product quality, and at the same time, it can play a shock-absorbing role, reduce the impact force generated during mold closing, and increase the service life of the device. The specific contents are as follows:

[0018] 1. An extrusion airbag and a sealing airbag are provided. When the upper mold and the lower mold are closed, the lower mold will squeeze the extrusion airbag, thereby transporting the gas in the extrusion airbag to the sealing airbag through the pipeline, so that the sealing airbag expands and fits the side wall of the lower mold, which plays a preliminary seal, prevents the outside air from entering, and improves the efficiency of rubber vulcanization.

[0019] 2. A sealing rod is provided, and the sealing airbag expands to push the sealing rod to rotate, so that the sealing rod fits with the lower end of the upper mold, thereby further improving the sealing effect, preventing the rubber from overflowing, and improving product quality and production efficiency.

[0020] 3. A buffer rod, a fixed block and a compression spring are provided. The upper mold is driven downward to fit the lower mold through the operation of the electric push rod. At this time, the buffer rod is impacted and will slide downward in contact with the inner wall of the fixed block to squeeze the compression spring to contract, thereby playing a preliminary shock-absorbing role through the compression spring, reducing the damage to the mold caused by the impact force.

[0021] 4. A first magnet and a second magnet are provided. The impact generated after mold closing pushes the lower mold downward, so that the slider slides against the inner wall of the lower mold, and then drives the first magnet to move synchronously toward the second magnet. The repulsive force generated at this time pushes the slider in the opposite direction to form resistance, thereby supporting the lower mold moving downward, further playing a shock-absorbing role and improving the practicality of the device.

[0022] 5. A buffer air bag is provided. The buffer rod is moved by sliding to restore the buffer air bag, thereby sucking in external air for internal storage. At the same time, the slider slides and the meshing gear rotates, driving the rack to move upward, thereby pushing the sealing rod to slide, and sealing the air inlet in the mold cavity to prevent glue overflow. After the injection molding is completed, the slider is reset, thereby driving the sealing block to move through the rack to open the air inlet. At this time, the compression spring drives the buffer rod to reset, thereby squeezing the buffer air bag, and transporting the air inside it to the air inlet through the pipeline, and blowing it into the mold cavity from the air inlet, thereby improving the efficiency of demoulding and avoiding deformation of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the utility model after mold closing;

[0025] Figure 3 This is an enlarged structural diagram of the lower mold of the utility model;

[0026] Figure 4 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 5This is a schematic diagram of the main cross-sectional structure of the fixed block of the utility model;

[0028] Figure 6 For this utility model Figure 3 Enlarged structural diagram at B in the middle.

[0029] In the figure: 1. device body; 2. electric push rod; 3. cross plate; 4. upper mold; 5. extrusion airbag; 6. sealing airbag; 7. lower mold; 8. buffer rod; 9. fixing block; 10. buffer airbag; 11. cavity; 12. compression spring; 13. sealing rod; 14. connecting rod; 15. slider; 16. first magnet; 17. gear; 18. rack; 19. sealing block; 20. mold cavity; 21. second magnet. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example 1: Please refer to Figure 1-Figure 6 As shown, the utility model provides a technical solution: a high-sealability vulcanization mold, comprising a device body 1, an electric push rod 2 is fixedly connected to the top of the device body 1, a horizontal plate 3 is fixedly connected to the output end of the electric push rod 2, and an upper mold 4 is fixedly connected to the bottom end of the horizontal plate 3 by screws, and a device for heating and vulcanization is arranged inside the upper mold 4;

[0032] This technical solution sets up the application of electric push rod 2 and cross plate 3. When in use, the electric push rod 2 drives the cross plate 3 to move downward, thereby driving the upper mold 4 and the lower mold 7 to fit together, and then the rubber is formed into a product of the desired shape in the mold through hot pressing and vulcanization.

[0033] Embodiment 2: The technical content disclosed in this embodiment is an improvement made on the basis of the above embodiment 1. The existing mold will cause wear and tear after long-term operation, resulting in poor sealing. When the mold is pressed, the rubber material will overflow, which seriously affects the product quality. Figure 1 and Figure 2 , Figure 4As shown, a sealing component of a vulcanization mold is disclosed, which is arranged in that an extrusion airbag 5 is fixedly connected in a groove opened at the bottom end of an upper mold 4, and the extrusion airbag 5 is connected to a sealing airbag 6 through a pipeline; a mold cavity 20 is opened in the middle of the top end of the lower mold 7, and a sealing rod 13 is rotatably installed in a groove on the side of the lower mold 7. The sealing rod 13 is arranged in an "L"-shaped structure, and a torsion spring for providing reset is connected between the axial end of the sealing rod 13 and the inner wall of the lower mold 7, and the sealing rod 13, the extrusion airbag 5 and the sealing airbag 6 are all arranged in two groups symmetrically about the upper mold 4.

[0034] In this technical solution, Figure 1 As shown, by utilizing the arrangement of the extrusion airbag 5, the sealing airbag 6 and the sealing rod 13, the extrusion airbag 5 is deformed when the mold is closed, and the gas inside is transported to the inside of the sealing airbag 6 through a pipeline, so that the sealing airbag 6 expands and seals. At the same time, the sealing rod 13 is rotated by the expansion of the sealing airbag 6, thereby performing a secondary seal, thereby improving the sealing effect of the device, thereby preventing glue overflow during the plastic vulcanization process, and improving the stability of the quality of the finished product.

[0035] Its use is as Figure 2 and Figure 4 The technical solution shown first pushes the horizontal plate 3 to slide downward through the electric push rod 2, thereby driving the upper mold 4 to move downward and fit with the lower mold 7, so that the lower mold 7 squeezes the airbag 5 to deform it, thereby transporting the gas inside it to the sealing airbag 6 through the pipeline, so that the sealing airbag 6 expands and fits with the inner wall of the lower mold 7 to achieve preliminary sealing. At the same time, the expanded sealing airbag 6 squeezes the sealing rod 13 to rotate, so that the lower end of the sealing rod 13 fits precisely with the upper mold 4, thereby achieving secondary sealing and improving the sealing after mold closing.

[0036] Embodiment 3: The technical content disclosed in this embodiment is a further improvement made on the basis of the above-mentioned embodiments 1 and 2. The shock absorbing effect is poor only by the elasticity of the spring. In order to further solve this technical problem, the technical solution is as follows: Figure 3 and Figure 5 , Figure 6As shown, a shock absorbing component of a vulcanization mold is disclosed, wherein a fixed block 9 is fixedly connected to the upper end face of a device body 1, a connecting rod 14 is rotatably installed on the side wall of the fixed block 9, a cavity 11 is opened in the fixed block 9, a buffer rod 8 is slidably connected in the cavity 11, and the buffer rod 8 is sleeved with a buffer airbag 10, and the top of the buffer rod 8 is fixedly connected to a lower mold 7, the end of the connecting rod 14 away from the fixed block 9 is rotatably connected to a slider 15, and a first magnet 16 is fixedly installed on the side wall of the slider 15, a gear 17 is rotatably installed inside the lower mold 7, a sealing block 19 is slidably connected in a groove at the bottom end of the mold cavity 20, and a rack 18 is fixedly connected to the bottom end of the sealing block 19, and a second magnet 21 is fixedly connected in the groove at the bottom end of the lower mold 7, and two groups of fixed blocks 9 are symmetrically arranged about the lower mold 7, and The fixed block 9 is slidably connected to the buffer rod 8, and a compression spring 12 is fixedly nested on the buffer rod 8, and the bottom end of the compression spring 12 is fixedly connected to the outer wall of the top end of the fixed block 9, the buffer air bag 10 is connected to the outside and the bottom groove of the mold cavity 20 through a one-way flow pipe, and the buffer air bag 10 is located in the cavity 11, the side height of the sealing block 19 is greater than the outlet diameter of the pipe, and the sealing block 19 is symmetrically arranged in two groups about the mold cavity 20, the slider 15 is slidably connected to the inner wall of the groove at the bottom end of the lower mold 7, and a tooth block meshing with the bottom end of the gear 17 is arranged at the top of the slider 15, the first magnet 16 and the second magnet 21 are aligned, and the opposite side of the first magnet 16 and the second magnet 21 are the same magnetic poles, the rack 18 is slidably connected to the inner wall of the lower mold 7, and the rack 18 meshes with the side of the gear 17.

[0037] In this technical solution, Figure 3 As shown, by utilizing the arrangement of the buffer rod 8, the first magnet 16 and the second magnet 21, when the mold is closed, the compression spring 12 is contracted by sliding and squeezing the buffer rod 8, and at the same time, the lower mold 7 squeezes the slider 15 to slide, driving the first magnet 16 to approach the second magnet 21, so that the impact force is removed by the dual action of the elasticity of the spring and the repulsive force generated by the first magnet 16 and the second magnet 21, thereby increasing the service life of the device, and at the same time, the air is blown into the mold cavity 20 by the buffer airbag 10 when the mold is opened, preventing the formed mold from sticking to the bottom of the mold cavity 20 and causing deformation, thereby improving the quality of the finished product and the demolding efficiency.

[0038] Its use is as Figure 5 and Figure 6The technical solution shown in the figure, first, when the upper mold 4 and the lower mold 7 are molded together, the impact force generated will push the buffer rod 8 to slide downward against the inner wall of the fixed block 9, so that the buffer airbag 10 resets and inhales while squeezing the compression spring 12 to contract and unload the force. At this time, the downward movement of the lower mold 7 will drive the slider 15 to slide, drive the first magnet 16 to approach the second magnet 21, and then perform secondary shock absorption through the repulsive force generated by the magnets. At the same time, the slider 15 slides to engage the rack 18 to rotate, and then pushes the sealing block through the rack 18 19 slides upward to seal the air inlet at the bottom of the cavity 20. After the mold is formed, the electric push rod 2 drives the upper mold 4 to separate from the lower mold 7. At this time, the pressure disappears, so that the repulsive force pushes the slider 15, and then the meshing gear 17 reverses. At this time, the sealing block 19 is driven by the rack 18 to move to open the air inlet. At the same time, the compression spring 12 drives the buffer rod 8 to reset and squeeze the buffer airbag 10, so that the gas is transported to the air inlet through the one-way flow pipeline, and then blown into the cavity 20 from the air inlet, thereby improving the efficiency of demoulding.

[0039] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-sealability vulcanization mold, comprising a device body (1), wherein the top of the device body (1) is fixedly connected to an electric push rod (2), the output end of the electric push rod (2) is fixedly connected to a horizontal plate (3), and the bottom end of the horizontal plate (3) is fixedly connected to an upper mold (4) via screws, and a device for heating and vulcanization is provided inside the upper mold (4); It is characterized in that Also includes: An extrusion airbag (5) is fixedly connected in a groove formed at the bottom end of the upper mold (4), and the extrusion airbag (5) is connected to a sealing airbag (6) through a pipeline; The upper end surface of the device body (1) is fixedly connected to a fixed block (9), a connecting rod (14) is rotatably mounted on a side wall of the fixed block (9), a cavity (11) is provided in the fixed block (9), a buffer rod (8) is slidably connected in the cavity (11), the buffer rod (8) is sleeved with a buffer airbag (10), and a lower mold (7) is fixedly connected to the top of the buffer rod (8), an end of the connecting rod (14) away from the fixed block (9) is rotatably connected to a slider (15), and a first magnet (16) is fixedly mounted on the side wall of the slider (15); A mold cavity (20) is provided in the middle of the top of the lower mold (7), a sealing rod (13) is rotatably mounted in a groove on the side of the lower mold (7), and a gear (17) is rotatably mounted inside the lower mold (7), a sealing block (19) is slidably connected in the groove at the bottom of the mold cavity (20), a rack (18) is fixedly connected to the bottom of the sealing block (19), and a second magnet (21) is fixedly connected in the groove at the bottom of the lower mold (7).

2. The high-sealing vulcanization mold according to claim 1, characterized in that: The fixed blocks (9) are provided in two groups symmetrically with respect to the lower mold (7), and the fixed blocks (9) are slidably connected to the buffer rod (8), and a compression spring (12) is fixedly embedded on the buffer rod (8), and the bottom end of the compression spring (12) is fixedly connected to the outer wall of the top end of the fixed block (9).

3. The high-sealing vulcanization mold according to claim 1, characterized in that: The cushioning airbag (10) is connected to the outside and the bottom groove of the mold cavity (20) through a one-way flow pipe, and the cushioning airbag (10) is located in the cavity (11). The side height of the sealing block (19) is greater than the diameter of the pipe outlet, and two groups of sealing blocks (19) are symmetrically arranged with respect to the mold cavity (20).

4. The high-sealing vulcanization mold according to claim 1, characterized in that: The sealing rod (13) is arranged in an "L"-shaped structure, and a torsion spring for providing reset is connected between the axial end of the sealing rod (13) and the inner wall of the lower mold (7), and the sealing rod (13), the extrusion airbag (5) and the sealing airbag (6) are arranged in two groups symmetrically with respect to the upper mold (4).

5. The high-sealing vulcanization mold according to claim 1, characterized in that: The slider (15) is slidably connected to the inner wall of the groove at the bottom end of the lower mold (7), and a tooth block meshing with the bottom end of the gear (17) is provided at the top end of the slider (15).

6. The high-sealing vulcanization mold according to claim 1, characterized in that: The first magnet (16) and the second magnet (21) are aligned, and the opposite sides of the first magnet (16) and the second magnet (21) have the same magnetic poles.

7. The high-sealing vulcanization mold according to claim 1, characterized in that: The rack (18) is slidably connected to the inner wall of the lower mold (7), and the rack (18) is meshed with the side of the gear (17).

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