A mold assembly for synchronous belt vulcanization and a vulcanization apparatus

Abstract

The utility model discloses a kind of mould assemblies and vulcanization equipment for synchronous belt vulcanization, the mould assembly includes: first bottom plate is equipped with steam import, upper cover plate is spaced apart between first bottom plate along vertical direction;Annular mould includes opposite first side and second side in vertical direction, first side is connected with first bottom plate, second side is connected with upper cover plate to form inner cavity;Rubber sleeve is sleeved on the outer surface of annular mould to form the mould cavity of synchronous belt placement, rubber sleeve includes opposite third side and fourth side in vertical direction, third side is sealingly connected with first bottom plate, fourth side is sealingly connected with upper cover plate;Inner cavity includes vacuum adsorption component, vacuum adsorption component is communicated with mould cavity to form independent vacuum system;First air pipe, after passing through upper cover plate, is communicated with vacuum adsorption component.The utility model in the present application can independently vacuumize mould cavity in synchronous belt vulcanization, and the practicability of mould assembly for synchronous belt vulcanization is improved.

Description

Technical Field

[0001] This utility model relates to the field of synchronous belt vulcanization technology, and in particular to a mold assembly and vulcanization equipment for synchronous belt vulcanization. Background Technology

[0002] The synchronous belt vulcanization process involves placing the formed synchronous belt into a vulcanization device for heat treatment. The formed synchronous belt contains materials such as rubber, rope or steel wire, and cloth. The synchronous belt vulcanization process is used to improve the wear resistance and aging resistance of the synchronous belt, as well as to enhance the strength or sealing of the synchronous belt joint.

[0003] In existing vulcanization processes, the mold assembly within the vulcanization equipment includes: an annular mold, a rubber sleeve, an upper cover plate, and a lower cover plate. The annular mold is placed between the upper and lower cover plates, and the rubber sleeve is fitted over the outside of the annular mold to form a mold cavity for placing the timing belt between the rubber sleeve and the annular mold. The inside of the annular mold is an inner cavity. The lower cover plate has a steam inlet for introducing high-temperature, high-pressure steam into the inner cavity. To prevent the high-temperature, high-pressure steam from entering the mold cavity and burning the timing belt, a vacuum is usually first drawn from the steam inlet to both the mold cavity and the inner cavity. Then, high-temperature, high-pressure steam is introduced into the inner cavity from the steam inlet to heat the mold, causing the rubber compound to solidify and form the timing belt.

[0004] The existing molds for vulcanizing synchronous belts have the following problems: after high-temperature and high-pressure steam is introduced into the inner cavity, it may diffuse into the mold cavity, causing the vacuum of the mold cavity to be destroyed. At this time, it is impossible to evacuate the mold cavity again. The high-temperature and high-pressure steam will burn the teeth on the surface of the synchronous belt that is in contact with the ring mold, or cause tooth deformation or incomplete tooth shape, thus causing the synchronous belt to be scrapped. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art where high-temperature and high-pressure steam may diffuse into the mold cavity after being introduced into the inner cavity, thereby destroying the vacuum of the mold cavity. At this time, it is impossible to evacuate the mold cavity again. The high-temperature and high-pressure steam will burn the teeth on the surface of the synchronous belt that is in contact with the annular mold, or cause tooth deformation or incomplete tooth shape, thus causing the synchronous belt to be scrapped.

[0006] To solve the above-mentioned technical problems, the present invention discloses a mold assembly for synchronous belt vulcanization, comprising: a first base plate with a steam inlet;

[0007] The upper cover plate is disposed at intervals from the first bottom plate along the vertical direction;

[0008] An annular mold includes a first side and a second side opposite to each other in the vertical direction, the first side being connected to the first base plate and the second side being connected to the upper cover plate to form an inner cavity;

[0009] A rubber sleeve is fitted onto the outer surface of the annular mold to form a mold cavity for placing a timing belt. The rubber sleeve includes a third side and a fourth side opposite to each other in the vertical direction. The third side is sealed to the first bottom plate, and the fourth side is sealed to the upper cover plate.

[0010] The inner cavity contains a vacuum adsorption component, which is connected to the mold cavity to form an independent vacuum system;

[0011] The first suction pipe passes through the upper cover plate and connects to the vacuum adsorption assembly.

[0012] Using the above technical solution, in the vertical direction, the first and second sides of the annular mold are connected to the first base plate and the upper cover plate, respectively, to form an inner cavity for heating the annular mold with high-temperature and high-pressure steam. A rubber sleeve is fitted on the outer surface of the annular mold, and a mold cavity for placing the timing belt is located between the rubber sleeve and the outer surface of the annular mold. An independent vacuum system is formed by setting a vacuum adsorption component connected to the mold cavity in the inner cavity. This system can keep the vacuum adsorption component in a vacuum state from the beginning to the end of the process of introducing high-temperature and high-pressure steam, so that the high-temperature and high-pressure steam will not re-enter the mold cavity. Moreover, when the high-temperature and high-pressure steam has finished heating the annular mold, the vacuum system can be broken to detach the timing belt attached to the outer surface of the annular mold, which makes it convenient to remove the vulcanized timing belt from the annular mold.

[0013] It is understandable that the vacuum adsorption component mentioned above is in the vacuum state, that is, the air in the mold cavity is extracted by using a vacuum equipment (such as a vacuum pump), and the vacuum breaking process mentioned above is to introduce air or inert gas into the mold cavity.

[0014] According to another specific embodiment of the present invention, the vacuum adsorption assembly includes:

[0015] The cup sleeve includes a bottom wall and a connecting wall to define a vacuum adsorption cavity. The bottom wall is provided with a first air guide hole. The connecting wall is an annular plate, which includes an upper end face and a lower end face. The upper end face is welded to the inner wall of the annular mold near the first side. The lower end face is welded to the bottom wall. The first air extraction pipe is connected to the vacuum adsorption cavity.

[0016] The first vacuum tube includes a first port and a second port, the first port being connected to the first air guide hole, and the second port being connected to the mold cavity.

[0017] Using the above technical solution, in the vertical direction, the cup sleeve, including the connecting wall and the bottom wall, defines a vacuum adsorption cavity. The connecting wall of the cup sleeve can be welded to the inner wall of the first side near the annular mold to form a vacuum adsorption cavity between the upper cover plate and the cup sleeve. The cup sleeve and the mold cavity are connected by a first vacuum tube to form a vacuum system including the mold cavity and the vacuum adsorption cavity. By connecting an external vacuum pumping device to this vacuum system, the mold cavity can be evacuated separately.

[0018] According to another specific embodiment of the present invention, a second air guide hole is provided on the annular mold near the second side, and the second air guide hole is provided through the wall thickness of the annular mold; the vacuum adsorption assembly further includes an adapter, the adapter includes a first outlet and a second outlet, the first outlet is connected to the second port, and the second outlet is connected to the second air guide hole.

[0019] Using the above technical solution, in the vertical direction, the connecting wall of the cup sleeve is connected to the inner wall of the first side near the annular mold, and a second air guide hole is provided at the second side near the annular mold. This helps to increase the vacuum surface area of ​​the mold cavity, ensuring that the edge area of ​​the synchronous belt can be evacuated. In addition, the second air guide hole is connected to the first vacuum tube through an adapter to facilitate the connection between the mold cavity and the first vacuum tube.

[0020] According to another specific embodiment of the present invention, the upper end face includes a flange structure, and the flange structure is welded to the inner wall of the annular mold near the first side.

[0021] Using the above technical solution, the upper end face of the connecting wall of the aforementioned annular plate structure includes a flanged structure, which is similar to the outwardly extending edge of a basin or bowl. This flanged structure facilitates welding to the inner wall of the annular mold near the first side, forming a vacuum adsorption cavity between the upper cover plate and the cup sleeve. Furthermore, welding the flanged structure to the inner wall of the annular mold near the first side reduces the space occupied by the cup sleeve within the cavity. A larger inner cavity volume results in a larger contact area between the high-temperature, high-pressure steam and the annular mold, which is more conducive to improving the vulcanization efficiency of the synchronous belt.

[0022] According to another specific embodiment of the present invention, it further includes an annular connecting plate, the annular connecting plate including an inner annular surface and an outer annular surface, the outer annular surface being welded to the inner wall of the annular mold near the first side, and the inner annular surface being welded to the upper end surface.

[0023] By adopting the above technical solution, the annular connecting plate is welded to the inner wall of the annular mold, and then the annular connecting plate is welded to the connecting wall of the cup sleeve. That is, the connecting wall of the cup sleeve is indirectly connected to the inner wall of the annular mold. In this design, the connecting wall of the annular plate structure does not need to include a flange structure. A simple flat plate can be used to weld to the inner ring surface of the annular connecting plate, which reduces the processing difficulty of the connecting wall.

[0024] According to another specific embodiment of the present invention, the vacuum adsorption assembly further includes a T-shaped plate;

[0025] The T-shaped plate includes an upper end plate and a lower end plate. The width of the upper end plate is greater than the width of the lower end plate. The upper end plate is detachably connected to the flange structure, or the upper end plate is detachably connected to the annular connecting plate to form the vacuum adsorption cavity.

[0026] The upper end plate and the lower end plate are provided with a first through hole, and the first suction pipe passes through the first through hole and communicates with the vacuum adsorption chamber.

[0027] Using the above technical solution, a T-shaped plate composed of an upper end plate and a lower end plate is detachably connected to the flanged structure of the aforementioned connecting wall, or the T-shaped plate is detachably connected to the annular connecting plate, so as to form a vacuum adsorption cavity between the T-shaped plate and the cup sleeve. Compared with the above, a vacuum adsorption cavity is formed between the upper cover plate and the cup sleeve. The first through hole on the T-shaped plate can limit the position of the first suction pipe entering the vacuum adsorption cavity, and at the same time facilitate the communication between the first suction pipe and the vacuum adsorption cavity.

[0028] According to another specific embodiment of the present invention, the inner cavity further includes a fixing seat, which is spaced apart from the first base plate;

[0029] The fixing base includes: a fifth side and a sixth side symmetrically arranged along the vertical direction, and a steam inlet hole that penetrates the fixing base along the vertical direction. The two ends of the steam inlet hole are respectively connected to the inner cavity and the steam inlet. The fifth side and the sixth side are respectively welded to the inner wall of the annular mold. The first vacuum tube passes through the fifth side and the sixth side and is connected to the adapter. The adapter is welded to the fifth side and the sixth side.

[0030] Using the above technical solution, the fixing seat is welded to the inner wall of the annular mold. Its functions include: facilitating the movement of the entire mold assembly to other locations and docking with structures in other locations; facilitating the fixing of the first vacuum tube in the inner cavity; and facilitating the fixing of the adapter. The steam inlet hole, which runs vertically through the fixing seat, allows high-temperature, high-pressure steam introduced from the steam inlet on the first base plate to enter the inner cavity.

[0031] According to another specific embodiment of the present invention, a vacuum valve is also provided on the first extraction pipe.

[0032] By adopting the above technical solution, the vacuum valve can conveniently control the vacuum state in the vacuum adsorption assembly.

[0033] This utility model also discloses a vulcanization device, comprising:

[0034] Mold assembly for synchronous belt vulcanization as described in any of the preceding items;

[0035] The tank body includes an upper tank cover, a tank wall, and a lower tank cover. The lower tank cover contains a support platform. The support platform includes a steam inlet pipe and a steam outlet pipe that pass through the support platform. The steam inlet pipe and the steam outlet pipe are independent of each other and are both connected to the steam inlet. The first base plate is detachably connected to the support platform. The first suction pipe passes through the upper tank cover and is connected to an external vacuum pump.

[0036] Using the above technical solution, high-temperature, high-pressure steam is introduced into the tank and the inner cavity of the mold assembly through the steam inlet pipe. The high-temperature, high-pressure steam introduced into the tank serves two purposes: it presses the rubber sleeve against the outer surface of the annular mold, ensuring a tight fit between the timing belt and the outer surface of the annular mold, preventing the formation of a mold cavity, or it helps to increase the vacuum level of the mold cavity. Additionally, the high-temperature, high-pressure steam introduced into the inner cavity is used to heat the annular mold for vulcanization of the timing belt. Furthermore, a vacuum pump is located outside the upper tank cover, and a first suction pipe passes through the upper tank cover and connects to the vacuum pump. This ensures that the vacuum adsorption assembly remains in a vacuum state from the introduction of high-temperature, high-pressure steam until the introduction process ends, preventing the high-temperature, high-pressure steam from re-entering the mold cavity. Moreover, after the high-temperature, high-pressure steam has finished heating the annular mold, the vacuum system can be broken, causing the timing belt attached to the outer surface of the annular mold to detach, thus facilitating the removal of the vulcanized timing belt from the annular mold.

[0037] According to another specific embodiment of the present invention, the upper tank cover includes a flange, the flange is provided with a second through hole, the first suction pipe passes through the second through hole and is connected to the vacuum pump; the tank wall is provided with a pressure gauge, the detection end of the pressure gauge is set through the tank wall.

[0038] By adopting the above technical solution, a flange is set to facilitate the fixing of the external vacuum pump. In addition, the pressure gauge on the tank wall is used to display the pressure inside the tank in real time, so that the operator can observe it in real time. Attached Figure Description

[0039] Figure 1 This invention provides a vertical cross-sectional view of a mold assembly for synchronous belt vulcanization.

[0040] Figure 2 This diagram illustrates the deformation of the rubber sleeve when the upper cover plate is placed on the first side of the annular mold.

[0041] Figure 3 This shows a vertical cross-sectional view of the vulcanizing equipment provided in an embodiment of the present invention;

[0042] Figure 4 Show Figure 1 A partial view of the second side of the middle annular mold;

[0043] Figure 5 Show Figure 1 Partial view of the upper section of the middle mold assembly;

[0044] Figure 6 A partial view of a vacuum adsorption assembly including a T-shaped plate is shown.

[0045] Figure label:

[0046] First base plate 10; Steam inlet 11;

[0047] Top cover plate 20;

[0048] Annular mold 30; first side 31; second side 32; second air guide hole 320;

[0049] Rubber sleeve 40; Third side 41; Fourth side 42;

[0050] Inner cavity 100; mold cavity 200; first air extraction pipe 300;

[0051] Vacuum adsorption assembly 50; cup sleeve 51; bottom wall 511; first air guide hole 5111; connecting wall 512; upper end face 5121; lower end face 5122; vacuum adsorption chamber 513; first vacuum tube 52; first port 521; second port 522; adapter 53; first outlet 531; second outlet 532; annular connecting plate 54; inner annular surface 541; outer annular surface 542; T-shaped plate 55; upper end plate 551; lower end plate 552; first through hole 550;

[0052] Fixed base 60; fifth side 61; sixth side 62; steam inlet 63;

[0053] Tank body 70; Upper tank cover 71; Tank wall 72; Lower tank cover 73; Support platform 74; Steam inlet pipe 741; Steam outlet pipe 742; Flange 75; Pressure gauge 76;

[0054] Vacuum pump 80; vertical direction Y. Detailed Implementation

[0055] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0056] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0057] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0058] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0059] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0060] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0061] For ease of subsequent description, this application embodiment first defines the Y direction as the vertical direction by way of example.

[0062] Reference Figure 1 As shown, an embodiment of this utility model discloses a mold assembly for synchronous belt vulcanization, comprising: a first base plate 10 having a steam inlet 11, and an upper cover plate 20 spaced apart from the first base plate 10 along the vertical direction Y; an annular mold 30 including a first side 31 and a second side 32 opposite to each other in the vertical direction Y, the first side 31 being connected to the first base plate 10, and the second side 32 being connected to the upper cover plate 20 to form an inner cavity 100; a rubber sleeve 40 being fitted onto the outer surface of the annular mold 30 to form a mold cavity 200 for placing the synchronous belt, the rubber sleeve 40 including a third side 41 and a fourth side 42 opposite to each other in the vertical direction Y, the third side 41 being sealed to the first base plate 10, and the fourth side 42 being sealed to the upper cover plate 20; the inner cavity 100 including a vacuum adsorption assembly 50, the vacuum adsorption assembly 50 being connected to the mold cavity 200 to form an independent vacuum system; and a first suction pipe 300, passing through the upper cover plate 20 and connected to the vacuum adsorption assembly 50.

[0063] Using the above technical solution, in the vertical direction Y, the first side 31 and the second side 32 of the annular mold 30 are respectively connected to the first base plate 10 and the upper cover plate 20 to form an inner cavity 100 for heating the annular mold 30 by introducing high-temperature and high-pressure steam; the rubber sleeve 40 is fitted on the outer surface of the annular mold 30, and the cavity 200 for placing the timing belt is between the rubber sleeve 40 and the outer surface of the annular mold 30; a vacuum adsorption component 50 communicating with the cavity 200 is set in the inner cavity 100 to form an independent vacuum system, which can keep the vacuum adsorption component 50 in a vacuum state from the beginning of introducing high-temperature and high-pressure steam to the end of introducing steam, so that the high-temperature and high-pressure steam will not re-enter the cavity 200; moreover, when the high-temperature and high-pressure steam has finished heating the annular mold 30, the vacuum system can be broken to detach the timing belt attached to the outer surface of the annular mold 30, which makes it convenient to remove the vulcanized timing belt from the annular mold 30.

[0064] It is understood that the aforementioned vacuum adsorption component 50 is in a vacuum state, that is, the air in the mold cavity 200 is extracted using a vacuum pump (i.e., the vacuum pump 80 mentioned later), and the aforementioned vacuum breaking process is to introduce air into the mold cavity 200. Of course, an inert gas such as nitrogen can also be used for vacuum breaking, and this embodiment does not specifically limit this.

[0065] According to another specific embodiment of this utility model, referring to... Figure 1 and Figure 2As shown, in the aforementioned vacuum adsorption assembly 50, the cup sleeve 51 includes a bottom wall 511 and a connecting wall 512 to define the vacuum adsorption cavity 513. The bottom wall 511 is provided with a first air guide hole 5111. The connecting wall 512 is an annular plate, which includes an upper end face 5121 and a lower end face 5122. The upper end face 5121 is welded to the inner wall of the annular mold 30 near the first side 31, and the lower end face 5122 is welded to the bottom wall 511. The first suction pipe 300 is connected to the vacuum adsorption cavity 513. The first vacuum pipe 52 includes a first port 521 and a second port 522. The first port 521 is connected to the first air guide hole 5111, and the second port 522 is connected to the mold cavity 200.

[0066] Using the above technical solution, in the vertical Y direction, the cup sleeve 51, including the connecting wall 512 and the bottom wall 511, defines a vacuum adsorption cavity 513. The connecting wall 512 of the cup sleeve 51 can be welded to the inner wall of the first side 31 near the annular mold 30 to form a sealed vacuum adsorption cavity 513 between the upper cover plate 20 and the cup sleeve 51. The cup sleeve 51 and the mold cavity 200 are connected by the first vacuum tube 52 to form a vacuum system including the mold cavity 200 and the vacuum adsorption cavity 513. By connecting an external vacuum pump to this vacuum system, the mold cavity 200 can be evacuated independently.

[0067] Among them, such as Figure 2 As shown, in the vertical direction Y, the upper end face 5121 of the connecting wall 512 is welded to the inner wall of the first side 31 of the annular mold 30. Furthermore, because the length of the rubber sleeve 40 in the vertical direction Y is greater than the length of the annular mold 30 in the vertical direction Y, and the rubber sleeve 40 is a compressible or deformable rubber body, when the upper cover plate 20 presses against the first side 31 of the annular mold 30, the third side 41 and the fourth side 42 of the rubber sleeve 40 will... Figure 2 The bending deformation shown is used to create a sealing connection between the upper cover plate 20 and the first base plate 10.

[0068] In addition, such as Figure 2 As shown, the surface length of the mold cavity 200 used to place the timing belt on the annular mold 30 does not exceed the edge of the annular mold 30. When the rubber sleeve 40 is tightly attached to the outer surface of the annular mold 30, the top of the mold cavity 200 in the vertical direction Y is closed. Therefore, when vacuuming, the vacuum system containing the mold cavity 200 and the vacuum adsorption chamber 513 is closed in the inner cavity and exists independently of the inner cavity.

[0069] The assembly process of the mold assembly provided in this embodiment of the utility model is as follows:

[0070] Place the first base plate 10 on any horizontal plane, use a lifting device to lift the annular mold 30 and place it on the first base plate 10, then put the timing belt to be vulcanized onto the outer surface of the annular mold 30, matching it with the groove on the outer surface of the annular mold 30, then put the rubber sleeve 40 on the outside of the timing belt to be processed, and finally, use a lifting device to place the upper cover plate 20 onto the annular mold 30, so that the bottom surface of the upper cover plate 20 contacts the first side 31 of the annular mold 30. At this time, the third side 41 and the fourth side 42 of the rubber sleeve 40 undergo a reaction as follows: Figure 2 The deformation shown seals the space between the rubber sleeve 40 and the annular mold 30. The annular mold 30 contains the aforementioned vacuum adsorption assembly 50, meaning that the cup sleeve 51 and other structures in the vacuum adsorption assembly 50 are integrated with the annular mold 30.

[0071] Additionally, it should be noted that when the mold assembly of this utility model is used in a vulcanizing equipment for processing synchronous belts, the high-temperature and high-pressure steam introduced into the vulcanizing equipment will squeeze the rubber sleeve 40, so that the rubber sleeve 40 pushes the synchronous belt toward the outer wall of the annular mold 30.

[0072] The following embodiments of this utility model will describe the application of the mold assembly in vulcanizing equipment:

[0073] Reference Figure 3 As shown, an embodiment of this utility model also discloses a vulcanization device, including: a mold assembly for synchronous belt vulcanization as described above and a tank 70; the tank 70 includes an upper tank cover 71, a tank wall 72, and a lower tank cover 73, the lower tank cover 73 includes a support platform 74, the support platform 74 includes a steam inlet pipe 741 and a steam outlet pipe 742 that pass through the support platform 74, the steam inlet pipe 741 and the steam outlet pipe 742 are independent of each other and are both connected to a steam inlet 11; a first base plate 10 is detachably connected to the support platform 74; a first suction pipe 300 passes through the upper tank cover 71 and is connected to an external vacuum pump 80.

[0074] Using the above technical solution, high-temperature and high-pressure steam is introduced into the tank 70 and the inner cavity 100 of the mold assembly through the steam inlet pipe 741. The high-temperature and high-pressure steam introduced into the tank 70 serves to: press the rubber sleeve 40 of the mold assembly against the outer surface of the annular mold 30, ensuring a tight fit between the timing belt and the outer surface of the annular mold 30, thus preventing the formation of the mold cavity 200; or, help to increase the vacuum level of the mold cavity 200. Additionally, the high-temperature and high-pressure steam introduced into the inner cavity 100 is used to heat the annular mold 30 for vulcanizing the timing belt. In addition, the vacuum pump 80 is located outside the upper tank cover 71, and the first suction pipe 300 passes through the upper tank cover 71 and is connected to the vacuum pump 80. This allows the vulcanizing equipment to keep the vacuum adsorption component 50 in a vacuum state from the time the high-temperature and high-pressure steam is introduced until the end of the introduction process, so that the high-temperature and high-pressure steam will not re-enter the mold cavity 200. Moreover, when the high-temperature and high-pressure steam has finished heating the annular mold 30, the vacuum system can be broken to detach the timing belt attached to the outer surface of the annular mold 30, which makes it convenient to remove the timing belt after vulcanization from the annular mold 30.

[0075] The high-temperature, high-pressure steam mentioned above can be steam generated by a steam boiler or steam generated by other equipment and transported to the vulcanization equipment through pipelines.

[0076] When using the above-mentioned vulcanizing equipment, the vacuum pump 80 can be controlled to evacuate the mold cavity 200 at any time according to actual needs. Additionally, after vulcanization, air can be introduced into the mold cavity 200 to allow the timing belt to detach from the outer surface of the annular mold 30. The gas introduced here can be air or an inert gas, such as nitrogen.

[0077] According to another specific embodiment of the present invention, a second through hole is provided on the flange 75, and the first suction pipe 300 passes through the second through hole and is connected to the vacuum pump 80; a pressure gauge 76 is provided on the tank wall 72, and the detection end of the pressure gauge 76 penetrates the tank wall 72.

[0078] Using the above technical solution, a flange 75 is provided to facilitate the fixing of the external vacuum pump 80. Additionally, the pressure gauge 76 on the tank wall 72 serves to display the pressure inside the tank 70 in real time, allowing operators to easily monitor the pressure. In this embodiment, the vacuum pump 80, pressure gauge 76, and flange 75 need to be selected adaptively according to actual conditions; this embodiment does not impose specific limitations on their specific models or structures.

[0079] The assembly and use process of the vulcanizing equipment provided in this embodiment of the utility model is as follows:

[0080] Open the upper tank cover 71 of the tank body 70, and use a lifting tool to put the aforementioned annular mold 30 containing the vacuum adsorption component 50 into the tank body 70, so that the first bottom plate 10 is aligned with the support platform 74. Extend the first suction pipe 300 from the flange 75 on the upper tank cover 71 and connect it to the external vacuum pump 80. After stabilizing the entire tank body 70, turn on the vacuum pump 80 to put the mold cavity 200 of the annular mold 30 into a vacuum state and maintain this vacuum state. Then, introduce high-temperature and high-pressure steam into the tank body 70 and the inner cavity 100 of the annular mold 30 through the steam inlet pipe 741 to start the vulcanization treatment of the synchronous belt. After the vulcanization treatment is completed, the vacuum state can be released. After the tank temperature drops to the required temperature, remove the annular mold 30 as a whole from the tank body 70 and remove the treated synchronous belt from the annular mold 30.

[0081] It should be noted that, in actual use, other detection devices, such as thermometers, can be installed on the tank 70 according to actual needs.

[0082] According to another specific embodiment of the present invention, in the aforementioned vacuum adsorption component 50, such as Figure 4 As shown, a second air guide hole 320 is provided on the annular mold 30 near the second side 32, and the second air guide hole 320 penetrates the wall thickness of the annular mold 30; the vacuum adsorption assembly 50 also includes an adapter 53, which includes a first outlet 531 and a second outlet 532. The first outlet 531 is connected to the second port 522, and the second outlet 532 is connected to the second air guide hole 320.

[0083] Using the above technical solution, in the vertical Y direction, the connecting wall 512 of the cup sleeve 51 is connected to the inner wall of the first side 31 near the annular mold 30, and a second air guide hole 320 is provided at the second side 32 near the annular mold 30 to maximize the vacuum surface area of ​​the mold cavity 200, so as to ensure that the edge area of ​​the synchronous belt can be evacuated. In addition, the second air guide hole 320 is connected to the first vacuum tube 52 through the adapter 53 to facilitate the connection between the mold cavity 200 and the first vacuum tube 52.

[0084] It should be noted that the appendix Figure 4 In the middle, the rubber sleeve 40 did not cause the following: Figure 2 The bending shown is because the upper cover plate 20 has not yet covered the first side of the annular mold 30, that is, the rubber sleeve 40 is in a pressure-free state at this time.

[0085] Reference Figure 5 As shown, according to another specific embodiment of the present invention, the upper end face 5121 includes a flange structure, which is welded to the inner wall of the annular mold 30 near the first side 31.

[0086] Using the above technical solution, the upper end face 5121 of the connecting wall 512 of the aforementioned annular plate structure includes a flange structure, which is similar to the outwardly extending edge of a basin or bowl. This flange structure facilitates welding to the inner wall of the annular mold 30 near the first side 31, forming a sealed vacuum adsorption cavity 513 between the upper cover plate 20 and the cup sleeve 51. This flange structure facilitates welding to the inner wall of the annular mold 30 near the first side 31 and also reduces the space occupied by the cup sleeve 51 in the inner cavity 100. Because the larger the volume of the inner cavity 100, the larger the contact surface between the high-temperature, high-pressure steam and the annular mold 30, which is more conducive to improving the vulcanization efficiency of the synchronous belt.

[0087] It should be noted that the flange structure and the connecting wall 512 are an integral structure. This integral structure design helps to reduce the welding surface and improve the sealing performance of the vacuum adsorption cavity 513.

[0088] According to another specific embodiment of this utility model, referring to... Figure 1 As shown, the aforementioned vacuum adsorption assembly 50 also includes an annular connecting plate 54, which includes an inner annular surface 541 and an outer annular surface 542. The outer annular surface 542 is welded to the inner wall of the annular mold 30 near the first side 31, and the inner annular surface 541 is welded to the upper end surface 5121.

[0089] By adopting the above technical solution, the annular connecting plate 54 is welded to the inner wall of the annular mold 30, and then the annular connecting plate 54 is welded to the connecting wall 512 of the cup sleeve 51. That is, the connecting wall 512 of the cup sleeve 51 is indirectly connected to the inner wall of the annular mold 30. In this design, the connecting wall 512 of the aforementioned annular plate structure does not need to include a flange structure. A simple flat plate can be used to weld to the inner ring surface 541 of the annular connecting plate 54, which reduces the processing difficulty of the connecting wall 512.

[0090] According to another specific embodiment of this utility model, referring to... Figure 6 As shown, the aforementioned vacuum adsorption assembly 50 also includes a T-shaped plate 55, which includes an upper end plate 551 and a lower end plate 552. The width of the upper end plate 551 is greater than the width of the lower end plate 552. The upper end plate 551 is detachably connected to the flange structure, or the upper end plate 551 is detachably connected to the annular connecting plate 54 to form a vacuum adsorption cavity 513. A first through hole 550 is provided through the upper end plate 551 and the lower end plate 552, and the first suction pipe 300 passes through the first through hole 550 and communicates with the vacuum adsorption cavity 513.

[0091] With the above technical solution, the T-shaped plate 55 composed of the upper end plate 551 and the lower end plate 552 is arranged to be detachably connected to the flanged structure of the connecting wall 512, or the T-shaped plate 55 is detachably connected to the annular connecting plate 54, so as to form a sealed vacuum adsorption cavity 513 between the T-shaped plate 55 and the cup sleeve 51. Compared with the aforementioned manner of forming the sealed vacuum adsorption cavity 513 between the upper cover plate 20 and the cup sleeve 51, the first through hole 550 on the T-shaped plate 55 can define the position where the first exhaust pipe 300 enters the vacuum adsorption cavity 513, and at the same time facilitate the communication between the first exhaust pipe 300 and the vacuum adsorption cavity 513.

[0092] With reference to Figure 6 as shown in the figure, the T-shaped plate 55 and the aforementioned annular connecting plate 54 are detachably connected by bolts or screws. Certainly, other detachable connection manners such as pins can also be used, which are not specifically limited in this embodiment. Similarly, the aforementioned T-shaped plate 55 and the flanged structure of the connecting wall 512 can also be detachably connected by bolts or screws, which will not be repeated in this embodiment.

[0093] According to another specific embodiment of the present utility model, the inner cavity 100 further includes a fixing seat 60, which is arranged at an interval from the first bottom plate 10. The fixing seat 60 includes a fifth side edge 61 and a sixth side edge 62 symmetrically arranged along the vertical direction Y, and a steam inlet hole 63 penetrating through the fixing seat 60 along the vertical direction Y. Two ends of the steam inlet hole 63 are respectively communicated with the inner cavity 100 and the steam inlet 11. The fifth side edge 61 and the sixth side edge 62 are respectively welded to the inner wall of the annular mold 30. The first vacuum tube 52 passes through the fifth side edge 61 and the sixth side edge 62 and then communicates with the adapter 53, and the adapter 53 is welded to the fifth side edge 61 and the sixth side edge 62.

[0094] With the above technical solution, the fixing seat 60 is welded to the inner wall of the annular mold 30, and its functions include: facilitating the movement of the entire mold assembly to other positions and docking with structures at other positions; facilitating the fixation of the position of the first vacuum tube 52 in the inner cavity 100; facilitating the fixation of the position of the adapter 53. The steam inlet hole 63 penetrating through the fixing seat 60 along the vertical direction Y is used to allow the high-temperature and high-pressure steam introduced from the steam inlet 11 on the first bottom plate 10 to enter the inner cavity 100.

[0095] With reference to Figure 1 as shown, the fixing seat 60 shaped like the Chinese character "几" is arranged in the inner cavity 100 of the annular mold 30, so that the fixing seat 60 is welded to the inner wall of the annular mold 30 to form an integral body with the annular mold 30. After the upper cover plate 20 is removed, a hanger can be used to lift the annular mold 30, or the annular mold 30 sleeved with the rubber sleeve 40, and transfer it to other stations. The fixing seat 60 facilitates the stable placement of the annular mold 30 at the target position.

[0096] According to another specific embodiment of the present invention, a vacuum valve (not shown in the accompanying drawings) is also provided on the first suction pipe 300.

[0097] Using the above technical solution, the vacuum valve can conveniently control the vacuum state in the vacuum adsorption assembly 50. In this embodiment, there are no specific restrictions on the installation position of the vacuum valve on the first suction pipe 300, or the type of vacuum valve. For example, an electronic vacuum valve can be used to automatically control the opening and closing of the vacuum valve, thereby improving the automation level of the vulcanization equipment.

[0098] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A mold assembly for synchronous belt vulcanization, characterized in that, include: The first base plate is equipped with a steam inlet; The upper cover plate is spaced apart from the first base plate along the vertical direction; An annular mold includes a first side and a second side opposite to each other in the vertical direction, the first side being connected to the first base plate and the second side being connected to the upper cover plate to form an inner cavity; A rubber sleeve is fitted onto the outer surface of the annular mold to form a mold cavity for placing a timing belt. The rubber sleeve includes a third side and a fourth side opposite to each other in the vertical direction. The third side is sealed to the first bottom plate, and the fourth side is sealed to the upper cover plate. The inner cavity contains a vacuum adsorption component, which is connected to the mold cavity to form an independent vacuum system; The first suction pipe passes through the upper cover plate and connects to the vacuum adsorption assembly.

2. The mold assembly for synchronous belt vulcanization as described in claim 1, characterized in that, The vacuum adsorption assembly includes: The cup sleeve includes a bottom wall and a connecting wall to define a vacuum adsorption cavity. The bottom wall is provided with a first air guide hole. The connecting wall is an annular plate, which includes an upper end face and a lower end face. The upper end face is welded to the inner wall of the annular mold near the first side. The lower end face is welded to the bottom wall. The first air extraction pipe is connected to the vacuum adsorption cavity. The first vacuum tube includes a first port and a second port, the first port being connected to the first air guide hole, and the second port being connected to the mold cavity.

3. The mold assembly for synchronous belt vulcanization as described in claim 2, characterized in that, The annular mold has a second air guide hole near the second side, and the second air guide hole penetrates the wall thickness of the annular mold; the vacuum adsorption assembly also includes an adapter, which includes a first outlet and a second outlet, the first outlet being connected to the second port, and the second outlet being connected to the second air guide hole.

4. The mold assembly for synchronous belt vulcanization as described in claim 2, characterized in that, The upper end face includes a flange structure, which is welded to the inner wall of the annular mold near the first side.

5. The mold assembly for synchronous belt vulcanization as described in claim 4, characterized in that, It also includes an annular connecting plate, which has an inner annular surface and an outer annular surface. The outer annular surface is welded to the inner wall of the annular mold near the first side, and the inner annular surface is welded to the upper end surface.

6. The mold assembly for synchronous belt vulcanization as described in claim 5, characterized in that, The vacuum adsorption assembly also includes a T-shaped plate. The T-shaped plate includes an upper end plate and a lower end plate. The width of the upper end plate is greater than the width of the lower end plate. The upper end plate is detachably connected to the flange structure, or the upper end plate is detachably connected to the annular connecting plate to form the vacuum adsorption cavity. The upper end plate and the lower end plate are provided with a first through hole, and the first suction pipe passes through the first through hole and communicates with the vacuum adsorption chamber.

7. The mold assembly for synchronous belt vulcanization as described in claim 3, characterized in that, The inner cavity also includes a fixing seat, which is spaced apart from the first base plate; The fixing base includes: a fifth side and a sixth side symmetrically arranged along the vertical direction, and a steam inlet hole that penetrates the fixing base along the vertical direction. The two ends of the steam inlet hole are respectively connected to the inner cavity and the steam inlet. The fifth side and the sixth side are respectively welded to the inner wall of the annular mold. The first vacuum tube passes through the fifth side and the sixth side and is connected to the adapter. The adapter is welded to the fifth side and the sixth side.

8. The mold assembly for synchronous belt vulcanization as described in claim 1, characterized in that, The first extraction pipe is also equipped with a vacuum valve.

9. A vulcanizing device, characterized in that, include: The mold assembly for synchronous belt vulcanization as described in any one of claims 1 to 8; The tank body includes an upper tank cover, a tank wall, and a lower tank cover. The lower tank cover contains a support platform. The support platform includes a steam inlet pipe and a steam outlet pipe that pass through the support platform. The steam inlet pipe and the steam outlet pipe are independent of each other and are both connected to the steam inlet. The first base plate is detachably connected to the support platform. The first suction pipe passes through the upper tank cover and is connected to an external vacuum pump.

10. The vulcanizing equipment as described in claim 9, characterized in that, The upper tank cover includes a flange, and the flange has a second through hole. The first suction pipe passes through the second through hole and is connected to the vacuum pump. The tank wall is equipped with a pressure gauge, and the detection end of the pressure gauge penetrates the tank wall.

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