Vulcanizing mold

Abstract

The utility model relates to a vulcanization mold which comprises a bottom mold, a mold closing assembly and a top mold, and the bottom mold is used for placing a rubber product. The mold closing assembly comprises a front mold, a rear mold, a front rack, a rear rack and a gear, the front mold and the rear mold are both arranged on the bottom mold in a front-back moving mode, the front rack and the rear rack are oppositely arranged and are connected with the front mold and the rear mold respectively, the gear is rotationally arranged between the front rack and the rear rack and is meshed with the front rack and the rear rack respectively, and when the gear rotates, the front rack is meshed with the rear rack; and the front mold and the rear mold can be close to or far away from each other in the front-back direction. And the top die is detachably connected with the bottom die. Wherein the vulcanizing mold has a mold closing state and a mold splitting state. And in the mold closing state, the front mold and the rear mold are close to each other to fix the rubber product, the top mold is connected with the bottom mold, so that a vulcanization cavity is defined by the top mold, the bottom mold and the mold closing assembly, and the vulcanization cavity is used for conducting vulcanization heating on the rubber product. And in the mold splitting state, the top mold and the bottom mold are separated, and the front mold and the rear mold are far away from each other to loosen the rubber product.

Description

Technical Field

[0001] The utility model relates to the technical field of vulcanization devices, and more particularly, to a vulcanization mold. Background Art

[0002] Vulcanization is one of the main processes in rubber processing. Vulcanization is a process in which cross-linking aids such as vulcanizing agents and accelerators are added to rubber, and under certain temperature and pressure conditions, linear macromolecules are transformed into a three-dimensional network structure. Traditional vulcanization molds include an upper mold and a lower mold. The upper mold and the lower mold enclose a cavity for accommodating rubber products. After vulcanization is completed, the upper mold and the lower mold are first separated. The rubber product usually remains on the lower mold. It is necessary to pry the rubber product or use an ejection mechanism on the lower mold to eject the rubber product outwards, and then the rubber product is taken out by hand or tools.

[0003] Since the rubber product itself has flexibility and elasticity, the rubber product can be easily placed in the mold before vulcanization. However, during the vulcanization process, the rubber product gradually hardens, and the actions of prying or ejecting the rubber product may cause damage to it. On the other hand, for rubber products with concave and convex structures on the surface, the actions of prying and ejecting may not be able to disengage it from the lower mold, and the demolding process is relatively difficult. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a vulcanization mold, and the technical problem to be solved is: how to simply and effectively demold a rubber product.

[0005] To solve the above technical problem, the utility model adopts the following technical solutions.

[0006] The utility model provides a vulcanization mold, which includes: a bottom mold for placing a rubber product; a mold closing assembly including a front mold, a rear mold, a front rack, a rear rack and a gear. The front mold and the rear mold are both movably arranged on the bottom mold in the front and rear directions. The front rack and the rear rack are oppositely arranged and are respectively connected to the front mold and the rear mold. The gear is rotatably arranged between the front rack and the rear rack and meshes with the front rack and the rear rack respectively. When the gear rotates, the front mold and the rear mold can approach or move away from each other in the front and rear directions; a top mold detachably connected to the bottom mold; wherein, the vulcanization mold has a mold closing state and a mold opening state; in the mold closing state, the front mold and the rear mold approach each other to fix the rubber product, and the top mold is connected to the bottom mold so that the top mold, the bottom mold and the mold closing assembly enclose a vulcanization chamber for vulcanizing and heating the rubber product; in the mold opening state, the top mold and the bottom mold are separated, and the front mold and the rear mold move away from each other to release the rubber product.

[0007] In some embodiments of the present application, the front mold includes a first template and a second template spaced apart in the front-rear direction, and a first connecting bar connecting the first template and the second template. The front rack is connected to the first connecting bar; the rear mold includes a third template and a fourth template spaced apart in the front-rear direction, and a second connecting bar connecting the third template and the fourth template. The rear rack is connected to the second connecting bar; the third template is disposed between the first template and the second template, and the second template is disposed between the third template and the fourth template; when the front mold and the rear mold approach each other, a first receiving groove can be formed by enclosing between the first template and the third template, and a second receiving groove can be formed by enclosing between the second template and the fourth template. The first receiving groove and the second receiving groove are used to fix the rubber product.

[0008] In some embodiments of the present application, a first limiting groove is provided on one side of the first template facing the third template, a second limiting groove is provided on one side of the second template facing the fourth template, a third limiting groove is provided on one side of the third template facing the first template, and a fourth limiting groove is provided on one side of the fourth template facing the second template; the first limiting groove and the third limiting groove enclose to form the first receiving groove, and the second limiting groove and the fourth limiting groove enclose to form the second receiving groove.

[0009] In some embodiments of the present application, annular rib strips are provided on the inner walls of the first receiving groove and the second receiving groove.

[0010] In some embodiments of the present application, there are two first connecting bars and two second connecting bars. The two first connecting bars are oppositely arranged and are respectively disposed on opposite sides of the first template and the second template. The two second connecting bars are oppositely arranged and are respectively disposed on opposite sides of the third template and the fourth template; there are two sets of the front rack, rear rack and gear. One set of the front rack, rear rack and gear is disposed between one first connecting bar and one second connecting bar, and the other set of the front rack, rear rack and gear is disposed between the other first connecting bar and the other second connecting bar.

[0011] In some embodiments of the present application, the top mold includes a body and a first limiting block, a second limiting block and a third limiting block disposed at the bottom of the body, and the first limiting block, the second limiting block and the third limiting block are sequentially spaced apart in the front-rear direction; when the top mold is connected to the bottom mold, the first template and the third template are clamped between the first limiting block and the second limiting block, the second template and the fourth template are clamped between the second limiting block and the third limiting block, and the second limiting block extends into the space between the second template and the third template.

[0012] In some embodiments of the present application, the mold clamping assembly further includes a driving member, which includes a fixed portion and a movable portion. The fixed portion is connected to the bottom mold, and the movable portion is movably connected to the fixed portion and is used to drive the front mold to move back and forth relative to the bottom mold.

[0013] In some embodiments of the present application, the front rack and the rear rack are arranged vertically opposite to each other, and the front rack is arranged above the rear rack.

[0014] In some embodiments of the present application, a slide rail extending in the front-rear direction is provided on the bottom mold, and a first chute is provided at the bottom of the front mold. The first chute is matched with the slide rail so that the front mold can move back and forth relative to the bottom mold; a second chute is provided at the bottom of the rear mold. The second chute is matched with the slide rail so that the rear mold can move back and forth relative to the bottom mold.

[0015] In some embodiments of the present application, a positioning block is provided on the bottom mold, and the rubber product is in a hollow tubular shape and is sleeved outside the positioning block.

[0016] From the above technical solutions, it can be seen that the embodiments of the present utility model have at least the following advantages and positive effects:

[0017] In the vulcanization mold of the embodiment of the present utility model, due to the meshing and cooperating relationship between the front rack, the rear rack and the gear, the front mold and the rear mold can move synchronously in opposite directions. The reverse movement enables the front mold and the rear mold to approach or move away from each other. Specifically, first place the rubber product on the bottom mold, and then make the front mold and the rear mold approach each other. During the process of the front mold and the rear mold approaching each other, the rubber product can be positioned on the bottom mold. Then connect the top mold to the bottom mold, and the top mold, the bottom mold and the mold clamping assembly enclose to form a vulcanization chamber. The rubber product undergoes a vulcanization reaction under the high temperature and high pressure environment of the vulcanization chamber, so as to achieve the required physical and chemical properties. After vulcanization is completed, separate the top mold from the bottom mold, and the front mold and the rear mold move away from each other, and the vulcanization mold returns to the mold opening state. At this time, the rubber product is neither blocked by the top mold nor fixed by the front mold and the rear mold. The operator can easily take it out from the bottom mold by hand or tools, and the demolding process will not cause damage to the rubber product itself, and it is also possible to easily demold the rubber product with concave and convex structures on the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By considering the following detailed description of the preferred embodiments of the present utility model in conjunction with the drawings, various objectives, features and advantages of the present utility model will become more obvious. The drawings are only exemplary illustrations of the present utility model and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components. Among them:

[0019] Figure 1 It is a schematic structural diagram of a vulcanization mold shown according to an exemplary embodiment.

[0020] Figure 2 is Figure 1 a schematic exploded view.

[0021] Figure 3 is Figure 2 a schematic structural diagram of another state of

[0022] Figure 4 is Figure 2 the clamping die assembly in

[0023] Figure 5 is Figure 4 a schematic exploded view of

[0024] Figure 6 is Figure 1 the schematic structural diagram of the top die in

[0025] Figure 7 is Figure 2 the schematic structural diagram of the rubber product in

[0026] The description of the reference numerals is as follows:

[0027] 1, bottom die; 11, slide rail; 12, positioning block;

[0028] 2, clamping die assembly; 21, front die; 211, first template; 2111, first limit groove; 212, second template; 2121, second limit groove; 213, first connecting bar; 22, rear die; 221, third template; 2211, third limit groove; 222, fourth template; 2221, fourth limit groove; 223, second connecting bar; 23, front rack; 24, rear rack; 25, gear; 26, driving member; 27, first receiving groove; 28, second receiving groove;

[0029] 3, top die; 31, body; 32, first limit block; 33, second limit block; 34, third limit block;

[0030] 4, rubber product. Detailed implementation manners

[0031] Although the present utility model can be easily embodied in different forms of embodiments, only some specific embodiments are shown in the drawings and will be described in detail in this specification. At the same time, it can be understood that this specification should be regarded as a demonstration of the principle of the present utility model, and is not intended to limit the present utility model to what is described herein.

[0032] Accordingly, a feature pointed out in this specification will be used to illustrate one of the features of an embodiment of the present utility model, rather than implying that each embodiment of the present utility model must have the illustrated feature. In addition, it should be noted that this specification describes many features. Although some features may be combined to show possible system designs, these features may also be used in other combinations not explicitly described. Accordingly, unless otherwise stated, the illustrated combinations are not intended to be limiting.

[0033] In the embodiment shown in the drawings, the indication of directions (such as up, down, left, right, front, and back) is used to explain that the structures and movements of the various elements of the present utility model are not absolute but relative. When these elements are in the positions shown in the drawings, these explanations are appropriate. If the descriptions of the positions of these elements change, then the indication of these directions also changes accordingly.

[0034] Please refer to Figures 1 to 3 , a vulcanization mold provided by an embodiment of the present utility model mainly includes a bottom mold 1, a mold closing assembly 2, and a top mold 3. The bottom mold 1 is used to place a rubber product 4. The mold closing assembly 2 includes a front mold 21, a rear mold 22, a front rack 23, a rear rack 24, and a gear 25. The front mold 21 and the rear mold 22 are both arranged on the bottom mold 1 so as to be movable back and forth. The front rack 23 and the rear rack 24 are oppositely arranged and are respectively connected to the front mold 21 and the rear mold 22. The gear 25 is rotatably arranged between the front rack 23 and the rear rack 24 and meshes with the front rack 23 and the rear rack 24 respectively. When the gear 25 rotates, the front mold 21 and the rear mold 22 can approach or move away from each other in the front-back direction. The top mold 3 is detachably connected to the bottom mold 1. Among them, the vulcanization mold has a mold closing state and a mold opening state. In the mold closing state, the front mold 21 and the rear mold 22 approach each other to fix the rubber product 4, and the top mold 3 is connected to the bottom mold 1 so that the top mold 3, the bottom mold 1, and the mold closing assembly 2 enclose a vulcanization chamber, and the vulcanization chamber is used to vulcanize and heat the rubber product 4. In the mold opening state, the top mold 3 and the bottom mold 1 are separated, and the front mold 21 and the rear mold 22 move away from each other to release the rubber product 4.

[0035] In the vulcanization mold according to the embodiment of the present utility model, due to the meshing and mating relationship among the front rack 23, the rear rack 24 and the gear 25, the front mold 21 and the rear mold 22 can move synchronously in opposite directions. The reverse movement enables the front mold 21 and the rear mold 22 to approach or move away from each other. Specifically, first place the rubber product 4 on the bottom mold 1. Subsequently, make the front mold 21 and the rear mold 22 approach each other. During the process of the front mold 21 and the rear mold 22 approaching each other, the rubber product 4 can be positioned on the bottom mold 1. Then connect the top mold 3 to the bottom mold 1. The top mold 3, the bottom mold 1 and the mold clamping assembly 2 enclose to form a vulcanization chamber. The rubber product 4 undergoes a vulcanization reaction under the high temperature and high pressure environment of the vulcanization chamber, so as to achieve the required physical and chemical properties. After vulcanization is completed, separate the top mold 3 from the bottom mold 1, and the front mold 21 and the rear mold 22 move away from each other. The vulcanization mold returns to the mold opening state. At this time, the rubber product 4 is neither blocked by the top mold 3 nor fixed by the front mold 21 and the rear mold 22. It can be easily taken out from the bottom mold 1 by hand or tools. During the demolding process, the rubber product 4 itself will not be damaged, and for the rubber product 4 with concave and convex structures on the surface, it can also be easily demolded.

[0036] It can be conceived that the process of the above-mentioned front mold 21 and rear mold 22 approaching or moving away from each other in the front-rear direction can be that the front mold 21 or the rear mold 22 moves. During the movement, one of the front rack 23 and the rear rack 24 drives the gear 25 to rotate, so that the other one of the front rack 23 and the rear rack 24 drives the corresponding rear mold 22 or front mold 21 to move. It can also be that the gear 25 rotates. When the gear 25 rotates, it drives the front rack 23 and the rear rack 24 to move in opposite directions, thereby driving the front mold 21 and the rear mold 22 to move in opposite directions.

[0037] Please refer to Figures 3 to 5, the front mold 21 includes a first template 211 and a second template 212 that are spaced apart in the front-rear direction, and a first connecting bar 213 connecting the first template 211 and the second template 212. The front rack 23 is connected to the first connecting bar 213. The rear mold 22 includes a third template 221 and a fourth template 222 that are spaced apart in the front-rear direction, and a second connecting bar 223 connecting the third template 221 and the fourth template 222. The rear rack 24 is connected to the second connecting bar 223. The third template 221 is disposed between the first template 211 and the second template 212, and the second template 212 is disposed between the third template 221 and the fourth template 222. When the front mold 21 and the rear mold 22 approach each other, a first receiving groove 27 can be formed by enclosing between the first template 211 and the third template 221, and a second receiving groove 28 can be formed by enclosing between the second template 212 and the fourth template 222. The first receiving groove 27 and the second receiving groove 28 are used to fix the rubber product 4. The specific structural composition and arrangement of the front mold 21 and the rear mold 22 enable different receiving grooves to be formed between the front mold 21 and the rear mold 22, so that multiple groups of rubber products 4 can be vulcanized simultaneously, improving the vulcanization efficiency and enhancing the stability of the overall structure of the vulcanization mold.

[0038] In an embodiment where the first receiving groove 27 is formed by enclosing between the first template 211 and the third template 221, and the second receiving groove 28 is formed by enclosing between the second template 212 and the fourth template 222, a first limiting groove 2111 is provided on the side of the first template 211 facing the third template 221, a second limiting groove 2121 is provided on the side of the second template 212 facing the fourth template 222, a third limiting groove 2211 is provided on the side of the third template 221 facing the first template 211, and a fourth limiting groove 2221 is provided on the side of the fourth template 222 facing the second template 212. The first limiting groove 2111 and the third limiting groove 2211 enclose to form the first receiving groove 27, and the second limiting groove 2121 and the fourth limiting groove 2221 enclose to form the second receiving groove 28. On the one hand, the setting of the limiting grooves ensures the stable formation of the receiving grooves. On the other hand, the setting of the limiting grooves can improve the positioning accuracy of the rubber product 4, thereby ensuring that the subsequent vulcanization process can be carried out accurately.

[0039] In a further embodiment, the number of the first limiting grooves 2111 and the third limiting grooves 2211 corresponds and there are multiple, which can enclose to form multiple first receiving grooves 27. The number of the second limiting grooves 2121 and the fourth limiting grooves 2221 corresponds and there are multiple, which can enclose to form multiple second receiving grooves 28, further increasing the vulcanization efficiency.

[0040] Please refer to Figure 3 、 Figure 4 and Figure 7, annular ribs are provided on the inner walls of both the first receiving groove 27 and the second receiving groove 28, which can be applied to the vulcanization of the rubber product 4 with a corrugated structure. In this embodiment, the ribs on the inner wall of the first limiting groove 2111 and the ribs on the inner wall of the third limiting groove 2211 enclose to form the annular rib on the inner wall of the first receiving groove 27, and the ribs on the inner wall of the second limiting groove 2121 and the ribs on the inner wall of the fourth limiting groove 2221 enclose to form the annular rib on the inner wall of the second receiving groove 28.

[0041] Please refer to Figure 5 , in a specific implementation manner where the first connecting strip 213 connects the first template 211 and the second template 212, and the second connecting strip 223 connects the third template 221 and the fourth template 222, there are two first connecting strips 213 and two second connecting strips 223. The two first connecting strips 213 are arranged oppositely and are respectively disposed on the opposite sides of the first template 211 and the second template 212. The two second connecting strips 223 are arranged oppositely and are respectively disposed on the opposite sides of the third template 221 and the fourth template 222. There are two sets of the front rack 23, the rear rack 24 and the gear 25. One set of the front rack 23, the rear rack 24 and the gear 25 is disposed between one first connecting strip 213 and one second connecting strip 223, and the other set of the front rack 23, the rear rack 24 and the gear 25 is disposed between the other first connecting strip 213 and the other second connecting strip 223. One set of the front rack 23, the rear rack 24 and the gear 25 disposed between one first connecting strip 213 and one second connecting strip 223 forms the first set of transmission mechanisms, and the other set of the front rack 23, the rear rack 24 and the gear 25 disposed between the other first connecting strip 213 and the other second connecting strip 223 forms the second set of transmission mechanisms. Since the first set of transmission mechanisms and the second set of transmission mechanisms are respectively disposed on the opposite sides of the front mold 21 and the rear mold 22, the synchronism and stability of the reverse movement of the front mold 21 and the rear mold 22 are improved.

[0042] Please refer to Figure 6 , the top mold 3 includes a body 31 and a first limiting block 32, a second limiting block 33 and a third limiting block 34 disposed at the bottom of the body 31, and the first limiting block 32, the second limiting block 33 and the third limiting block 34 are arranged at intervals in the front-rear direction. When the top mold 3 is connected to the bottom mold 1, the first template 211 and the third template 221 are clamped between the first limiting block 32 and the second limiting block 33, the second template 212 and the fourth template 222 are clamped between the second limiting block 33 and the third limiting block 34, and the second limiting block 33 extends into the space between the second template 212 and the third template 221. Through the design of the limiting blocks of the top mold 3, it is ensured that the front mold 21 and the rear mold 22 can be maintained in a stable position, so that a vulcanization chamber can be stably formed among the bottom mold 1, the top mold 3 and the mold closing assembly 2, thereby improving the vulcanization quality and production efficiency.

[0043] In this embodiment, the body 31 of the top mold 3 covers the first receiving groove 27 and the second receiving groove 28, so as to form a vulcanization chamber between the bottom mold 1, the top mold 3 and the mold clamping assembly 2.

[0044] Please refer to Figures 1 to 3 , the mold clamping assembly 2 further includes a driving member 26. The driving member 26 includes a fixed part and a movable part. The fixed part is connected to the bottom mold 1, and the movable part is movably connected to the fixed part and is used to drive the front mold 21 to move back and forth relative to the bottom mold 1. The driving member 26 serves as a power source. Through the design of the driving member 26, the movement of the front mold 21 and the rear mold 22 can be accurately controlled, thereby improving the vulcanization quality and production efficiency. Correspondingly, the driving member 26 can also be arranged such that its movable part is used to drive the rear mold 22 to move back and forth relative to the bottom mold 1.

[0045] In another embodiment, the moving mode of the driving member 26 is rotation. The driving member 26 drives the gear 25 to rotate, thereby driving the front mold 21 and the rear mold 22 to move in opposite directions.

[0046] Please refer to Figures 2 to 5 , in an embodiment where the front rack 23 and the rear rack 24 are arranged oppositely, the front rack 23 and the rear rack 24 are arranged vertically opposite to each other, and the front rack 23 is arranged above the rear rack 24. Since the driving member 26 acts on the front mold 21 and the front rack 23 connected to the front mold 21 is arranged above the rear rack 24, when the front mold 21 moves together with the front rack 23, it is easier to drive the gear 25 to rotate, effectively reducing the power requirement for the driving member 26.

[0047] In another embodiment, the front rack 23 and the rear rack 24 are not arranged vertically corresponding to each other. The front rack 23 and the rear rack 24 are respectively arranged on the inner and outer sides in the left - right direction.

[0048] Please refer to Figure 2 and Figure 3 , the bottom mold 1 is provided with a slide rail 11 extending in the front - rear direction. The bottom of the front mold 21 is provided with a first sliding groove, and the first sliding groove is matched with the slide rail 11, so that the front mold 21 can move back and forth relative to the bottom mold 1. The bottom of the rear mold 22 is provided with a second sliding groove, and the second sliding groove is matched with the slide rail 11, so that the rear mold 22 can move back and forth relative to the bottom mold 1. Through the design of the slide rail 11 and each sliding groove, the front mold 21 and the rear mold 22 can move back and forth on the bottom mold 1 structurally feasibly.

[0049] In this embodiment, the bottom mold 1 is provided with a positioning block 12. The rubber product 4 is in a hollow tubular shape and is sleeved outside the positioning block 12. The positioning block 12 and each receiving groove realize the internal and external limitation of the hollow tubular rubber product 4, and can effectively prevent the rubber product 4 from deforming during vulcanization, thereby improving the vulcanization efficiency.

[0050] While the present utility model has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present utility model can be embodied in many forms without departing from the spirit or essence of the utility model, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A vulcanization mold, characterized in that: include: Bottom mold, used to place rubber products; A mold clamping assembly, comprising a front mold, a rear mold, a front rack, a rear rack and a gear, wherein the front mold and the rear mold are both movably arranged on the bottom mold, the front rack and the rear rack are arranged opposite to each other and are respectively connected to the front mold and the rear mold, the gear is rotatably arranged between the front rack and the rear rack and is respectively meshed with the front rack and the rear rack, and when the gear rotates, the front mold and the rear mold can move closer to or farther from each other in the front-to-back direction; A top mold, detachably connected to the bottom mold; Wherein, the vulcanization mold has a mold closing state and a mold opening state; In the mold closing state, the front mold and the rear mold are close to each other to fix the rubber product, and the top mold is connected to the bottom mold so that the top mold, the bottom mold and the mold closing assembly enclose a vulcanization chamber, and the vulcanization chamber is used to vulcanize and heat the rubber product; In the mold separation state, the top mold and the bottom mold are separated, and the front mold and the rear mold are moved away from each other to release the rubber product.

2. The vulcanization mold according to claim 1, characterized in that: The front mold includes a first mold plate and a second mold plate spaced apart in the front-to-back direction and a first connecting strip connecting the first mold plate and the second mold plate, and the front rack is connected to the first connecting strip; The rear mold includes a third mold plate and a fourth mold plate spaced apart in the front-to-back direction and a second connecting strip connecting the third mold plate and the fourth mold plate, and the rear rack is connected to the second connecting strip; The third template is arranged between the first template and the second template, and the second template is arranged between the third template and the fourth template; When the front mold and the rear mold are close to each other, the first mold and the third mold can enclose a first receiving groove, and the second mold and the fourth mold can enclose a second receiving groove, and the first receiving groove and the second receiving groove are used to fix the rubber product.

3. The vulcanization mold according to claim 2, characterized in that: A first limiting groove is provided on a side of the first template facing the third template, a second limiting groove is provided on a side of the second template facing the fourth template, a third limiting groove is provided on a side of the third template facing the first template, and a fourth limiting groove is provided on a side of the fourth template facing the second template; The first limiting groove and the third limiting groove are enclosed to form the first accommodating groove, and the second limiting groove and the fourth limiting groove are enclosed to form the second accommodating groove.

4. The vulcanization mold according to claim 2, characterized in that: The inner wall of the first accommodating groove and the inner wall of the second accommodating groove are both provided with annular ribs.

5. The vulcanization mold according to claim 2, characterized in that: The first connecting strips and the second connecting strips are both provided with two, the two first connecting strips are arranged opposite to each other and are respectively arranged on the opposite sides of the first template and the second template, and the two second connecting strips are arranged opposite to each other and are respectively arranged on the opposite sides of the third template and the fourth template; The front rack, rear rack and gear are provided in two groups, one group of the front rack, rear rack and gear is provided between one of the first connecting bar and one of the second connecting bar, and the other group of the front rack, rear rack and gear is provided between another of the first connecting bar and another of the second connecting bar.

6. The vulcanization mold according to claim 2, characterized in that: The top mold includes a body and a first limit block, a second limit block and a third limit block arranged at the bottom of the body, and the first limit block, the second limit block and the third limit block are arranged in sequence in the front-to-back direction; When the top mold is connected to the bottom mold, the first template and the third template are clamped between the first limit block and the second limit block, the second template and the fourth template are clamped between the second limit block and the third limit block, and the second limit block extends between the second template and the third template.

7. The vulcanization mold according to claim 1, characterized in that: The clamping assembly also includes a driving member, which includes a fixed part and a movable part. The fixed part is connected to the bottom mold, and the movable part is movably connected to the fixed part and is used to drive the front mold to move forward and backward relative to the bottom mold.

8. The vulcanization mold according to claim 6, characterized in that: The front rack and the rear rack are arranged opposite to each other up and down, and the front rack is arranged above the rear rack.

9. The vulcanization mold according to claim 1, characterized in that: The bottom mold is provided with a slide rail extending in the front-to-back direction, and the bottom of the front mold is provided with a first slide groove, and the first slide groove cooperates with the slide rail so that the front mold can move forward and backward relative to the bottom mold; A second slide groove is provided at the bottom of the rear mold, and the second slide groove cooperates with the slide rail so that the rear mold can move forward and backward relative to the bottom mold.

10. The vulcanization mold according to claim 1, characterized in that: A positioning block is arranged on the bottom mold, and the rubber product is in a hollow tube shape and is sleeved outside the positioning block.

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