A vulcanizing machine for rubber support production

Abstract

The application discloses a vulcanizing machine for rubber support production and belongs to the technical field of rubber vulcanization. The upper die plate is arranged on the frame, the lower die plate is arranged on the frame, the die is circular, and the inside of the die is used for loading raw materials. The upper die plate and the lower die plate are used for clamping the die and vulcanizing the raw materials. The positioning unit can fix the die with the product after vulcanization. The plurality of jacking units can abut against the bottom surface of the product under the driving of the lifting plate and provide independent jacking forces to the bottom surface of the product under the action of the spring, so that the product is jacked out of the die. The vulcanizing machine for rubber support production provided by the application can make the demolding force self-adaptively distributed according to the adhesion resistance between the product and the inner wall of the die through the elastic action of the spring, so that a gradually stripping and compliant demolding force is provided for the product, and the demolding is easier and smoother.

Description

Technical Field

[0001] This invention belongs to the field of rubber vulcanization technology, and specifically relates to a vulcanizing machine for producing rubber bearings. Background Technology

[0002] In modern engineering construction, rubber bearings are a key structural component widely used in infrastructure projects such as bridges and buildings. They effectively buffer vibrations, adapt to structural deformation, and ensure the stability and safety of engineering structures.

[0003] In the production process of rubber bearings, rubber sheets and steel sheets are first stacked alternately in a specific order and placed into a ring-shaped mold. The mold containing the raw materials is then placed in a vulcanizing machine. The vulcanizing machine presses the mold down from above and below, providing a high-temperature, high-pressure environment to cause the rubber to vulcanize and bond firmly with the steel sheets, thus forming the rubber bearing product. After vulcanization, to ensure the physical properties and dimensional stability of the product, it needs to undergo a period of heat and pressure holding on the vulcanizing machine. Once the heat and pressure holding is complete, the formed rubber bearing product needs to be removed from the mold, i.e., demolding.

[0004] There is significant friction between the rubber bearing product and the mold. Furthermore, after vulcanization and heat preservation pressure holding, the product is not completely cooled and remains in a state of thermal expansion, which further increases the friction between it and the inner wall of the mold. Traditional demolding methods mostly use a rigid ejector rod that acts directly on the center of the product's bottom surface, applying an axial ejection force. However, due to the significant friction and adhesion between the product and the inner wall of the mold, relying solely on a rigid ejector rod to apply axial force for demolding often requires a large ejection force to eject the entire product, making demolding difficult and easily damaging the product.

[0005] In conclusion, developing a vulcanizing machine for rubber bearing production that facilitates demolding and avoids product damage is of significant practical importance and plays a crucial role in promoting the development of the rubber bearing manufacturing industry. Summary of the Invention

[0006] The purpose of this invention is to provide a vulcanizing machine for producing rubber bearings, which can adaptively distribute the demolding force according to the different adhesion resistances at various locations, making product demolding easier and smoother.

[0007] To achieve the above objectives, this invention provides a vulcanizing machine for producing rubber bearings, including a frame, an upper template, a lower template, a mold, and a demolding mechanism. The upper template is elliptical and mounted on the frame, the lower template is mounted on the frame, and the mold is annular and used to fill raw materials. The upper template and the lower template are used to clamp the mold and vulcanize the raw materials.

[0008] The demolding mechanism includes a bracket, a positioning unit, a lifting plate, a lifting unit, and a spring. The bracket is mounted on the frame, and the positioning unit is mounted on the bracket. The positioning unit can fix the mold containing the vulcanized product. The lifting plate is mounted on the bracket and located below the positioning unit. The top surface of the lifting plate is equipped with multiple lifting units that are spaced apart circumferentially. A spring is provided between each lifting unit and the lifting plate. The spring is used to provide the lifting unit with a force to push the bottom surface of the product upward.

[0009] Multiple lifting units can abut against the bottom surface of the product under the action of the lifting plate, and provide their own independent supporting force to various parts of the bottom surface of the product under the action of the spring, so as to push the product out of the mold.

[0010] In one possible implementation, the positioning unit includes a lower clamping ring and an upper clamping ring, the lower clamping ring being disposed on the bracket, and the upper clamping ring being movably disposed on the bracket, the lower clamping ring and the upper clamping ring being able to jointly clamp the mold.

[0011] In one possible implementation, the inner diameter edges of the upper clamping ring and the lower clamping ring are configured to be flush with the inner diameter edges of the top and bottom of the mold, respectively, so that the upper clamping ring can press the flash of the top edge of the product to the top surface of the mold, the lower clamping ring can press the flash of the bottom edge of the product to the bottom surface of the mold, and the flash is torn off after the product is ejected from the mold.

[0012] In one possible implementation, a mounting ring is rotatably mounted on the bracket, an upper clamping ring is raised and lowered on the mounting ring, a lower clamping ring is rotatably mounted on the bracket, a gear ring is coaxially mounted on the lower clamping ring, and a gear is rotatably mounted on the bracket. The gear meshes with the gear ring and is driven by an external drive unit. The lower clamping ring can rotate under the drive of the gear to drive the mold to rotate.

[0013] In one possible implementation, the lifting unit includes a lifting plate and a smooth structural layer. The lifting plate is raised and lowered on the top surface of the lifting plate. The two ends of the spring act on the lifting plate and the lifting plate respectively. The smooth structural layer is disposed on the top of the lifting plate and is used to contact the bottom surface of the product and slide along the bottom surface of the product when the mold drives the product to rotate.

[0014] In one possible implementation, the mold includes an inner ring and an outer ring nested together. The outer wall of the inner ring is provided with an annular cooling groove. The outer ring has an inlet and an outlet communicating with the cooling groove. The inlet is used to connect to an external cooling medium delivery unit to deliver cooling medium into the cooling groove and reduce the temperature of the inner ring and the product.

[0015] In one possible implementation, the bottom of the outer wall of the outer ring has a positioning groove, and the lower clamping ring has a positioning part for engaging with the positioning groove. There are multiple positioning parts and positioning grooves, and each is provided in a one-to-one correspondence.

[0016] In one possible implementation, the positioning part is provided with a conveying pipe, the positioning groove is connected to the inlet, and the conveying pipe can be connected to the inlet after the positioning part and the positioning groove are engaged. The conveying pipe is used to connect to an external cooling medium conveying unit.

[0017] In one possible implementation, both the upper clamping ring and the lower clamping ring are provided with flexible anti-slip ridges on their contact surfaces with the mold.

[0018] In one possible implementation, the lower template is slidably disposed on the frame, and after sliding, the lower template can move away from below the upper template to facilitate the placement of the mold.

[0019] The significant technical effects of the embodiments of the present invention are as follows:

[0020] Through the elastic action of the spring, the demolding force can be adaptively distributed according to the adhesion resistance between the product and the inner wall of the mold, providing the product with a gradually peeling and compliant demolding force, making demolding easier and smoother, while reducing the possibility of product damage. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a vulcanizing machine for producing rubber bearings in one embodiment of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the demolding mechanism;

[0024] Figure 3 for Figure 1 A schematic diagram of the positioning unit in the middle;

[0025] Figure 4 for Figure 1 Schematic diagram of the mid-support structure;

[0026] Figure 5 for Figure 1 Schematic diagram of the central lifting unit;

[0027] Figure 6 for Figure 1 A schematic diagram of the structure of the intermediate mold.

[0028] In the diagram: 1. Frame, 2. Upper template, 3. Lower template, 4. Mold, 5. Demolding mechanism, 501. Support, 502. Positioning unit, 503. Lifting plate, 504. Lifting unit, 505. Spring, 5022. Lower clamping ring, 5023. Upper clamping ring, 5024. Gear ring, 5025. Gear, 5021. Mounting ring, 5041. Lifting plate, 5042. Smooth structural layer, 401. Inner ring, 402. Outer ring, 403. Cooling tank, 404. Inlet, 405. Outlet, 406. Positioning groove, 5026. Positioning part, 506. Conveying pipe, 5027. Anti-slip ridge. Detailed Implementation

[0029] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0031] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0034] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to 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 embodiments of this application.

[0035] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation", "connection", "linking", and "fixing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components.

[0036] Please see Figures 1-6 The illustration shows a vulcanizing machine for producing rubber bearings according to an embodiment of the present invention, including a frame 1, an upper template 2, a lower template 3, a mold 4, and a demolding mechanism 5.

[0037] The frame 1 serves as the basic support structure for the entire vulcanizing machine. The upper mold plate 2 is vertically and vertically mounted on the frame 1, and the lower mold plate 3 is set on the frame 1. The upper mold plate 2 adopts a hot plate structure commonly used in the vulcanizing field. It has steam channels, heat transfer oil channels, or electric heating elements inside, which can heat itself to the high temperature required for vulcanization through steam, heat transfer oil, or electric heating. The upper mold plate 2 is connected to a hydraulic cylinder, which can apply high pressure downwards during the vulcanization process. Together with the lower mold plate 3, it clamps the mold 4, providing a high-temperature and high-pressure vulcanization environment for the rubber and steel sheet raw materials inside the mold 4. The mold 4 is annular, and its internal space is used to fill the rubber sheet and steel sheet raw materials.

[0038] In the demolding mechanism 5, a bracket 501 is fixedly mounted on the frame 1 as a support frame. A positioning unit 502 is mounted on the bracket 501 to fix the mold 4 containing the vulcanized product. A lifting plate 503 is vertically mounted on the bracket 501 and located below the positioning unit 502. Multiple lifting units 504 are spaced circumferentially on the top surface of the lifting plate 503. Each lifting unit 504 is connected to the lifting plate 503 via a spring 505. During demolding, the lifting unit 504 rises under the influence of the lifting plate 503, contacts the bottom surface of the product, and provides independent support forces to various parts of the bottom surface of the product under the action of the spring 505.

[0039] During operation, before vulcanization begins, operators alternately stack rubber sheets and steel sheets into the annular mold 4 in a specific order. Then, the mold 4 containing the raw materials is placed on the lower mold platen 3. The vulcanizing machine is started, and the upper mold platen 2 descends under the action of a hydraulic cylinder, tightly pressing against the mold 4 to seal it. Simultaneously, the upper mold platen 2 is heated to the required high temperature for rubber vulcanization using conventional heating methods. Combined with the high-pressure environment, this promotes the vulcanization reaction of the rubber within the mold 4, firmly bonding it to the steel sheets to form the rubber support product. After vulcanization, a period of heat and pressure maintenance is performed to ensure the physical properties and dimensional stability of the product.

[0040] After the heat preservation and pressure holding are completed, the mold 4 is removed from between the upper and lower mold plates 3 and transferred to the demolding mechanism 5. The mold 4 is fixed to the bracket 501 by the positioning unit 502. Then, the lifting plate 503 rises under the drive of the lifting device, driving multiple lifting units 504 to rise together. When the lifting unit 504 contacts the bottom surface of the product, the spring 505 is gradually compressed, and the lifting unit 504 begins to apply a supporting force to various parts of the bottom surface of the product. Since the adhesion force between the product and the inner wall of the mold 4 varies at different circumferential positions, for areas with weak adhesion between the product and the inner wall of the mold 4, the corresponding spring 505 will release elastic potential energy, causing the corresponding lifting unit 504 to move upward first, thus loosening the product in that area first; while areas with stronger adhesion are loosened later.

[0041] Through the elastic action of spring 505, the demolding force can be adaptively distributed according to the adhesion resistance between the product and the inner wall of mold 4, providing the product with a gradually peeling and compliant demolding force, making demolding easier and smoother, while reducing the possibility of product damage.

[0042] In a specific embodiment, the bracket 501 serves as a supporting component for the positioning unit 502. The lower clamping ring 5022 is mounted on the bracket 501, and the upper clamping ring 5023 is vertically mounted on the bracket 501 via an external lifting device or a threaded locking structure, enabling it to clamp the mold 4 together with the lower clamping ring 5022. The inner diameters of both the lower and upper clamping rings 5022 and 5023 are adapted to the inner diameter of the mold 4. Both the lower and upper clamping rings 5022 and 5023 have flexible anti-slip ridges 5027 on their surfaces in contact with the mold 4.

[0043] When the mold 4, after vulcanization and heat preservation and pressure holding, is transferred to the demolding mechanism 5, the mold 4 is first placed on the lower clamping ring 5022, so that the bottom of the mold 4 is in contact with the lower clamping ring 5022. Then, the upper clamping ring 5023 descends to contact the top of the mold 4, and together with the lower clamping ring 5022, clamps the mold 4. At this time, the flexible anti-slip ridges 5027 on the surfaces of the upper clamping ring 5023 and the lower clamping ring 5022 contact the surface of the mold 4, increasing the friction and thus fixing the mold 4, preparing it for the subsequent demolding operation.

[0044] During the vulcanization process, due to the fluidity of rubber under high temperature and pressure, horizontally extending annular flash is inevitably generated between the top of the upper mold plate 2 and the mold 4, and between the lower mold plate 3 and the bottom of the mold 4. In traditional processes, after the rubber support is demolded, the flash on the upper and lower edges of the product needs to be cleaned manually, which increases the production process and time costs.

[0045] In this design, the upper clamping ring 5023 presses the flash from the top edge of the product against the top surface of the mold 4, while the lower clamping ring 5022 presses the flash from the bottom edge of the product against the bottom surface of the mold 4. As the product is gradually ejected from the mold 4, the flash, held in place by the upper and lower clamping rings 5023 and 5022, cannot move with the product. When the product leaves the mold 4, the flash also separates from the product simultaneously, achieving simultaneous demolding and flash removal without the need for subsequent manual cleaning steps, thus improving production efficiency.

[0046] In a specific embodiment, a mounting ring 5021 is rotatably mounted on the bracket 501. An upper clamping ring 5023 is specifically mounted on the mounting ring 5021 in a lifting configuration. The upper clamping ring 5023 is equipped with a guide rod that passes through a guide hole in the mounting ring 5021. The guide rod may be threaded. When the upper clamping ring 5023 descends to the clamping mold 4, it can be fixed in place by bolts. The lower clamping ring 5022 is rotatably fitted to the bracket 501. A gear ring 5024 is coaxially mounted on the lower clamping ring 5022, and a gear 5025 is rotatably mounted on the bracket 501. The gear 5025 and the gear ring 5024 mesh with each other to form a transmission structure. An external drive unit is connected to the gear 5025, enabling the gear 5025 to rotate, which in turn drives the lower clamping ring 5022 to rotate via the gear ring 5024, thereby causing the mold 4 and the product to rotate synchronously.

[0047] The lifting unit 504 consists of a lifting plate 5041 and a smooth structural layer 5042. The smooth structural layer 5042 can be made of a conventional low-friction material, such as polytetrafluoroethylene (PTFE) or stainless steel with a PTFE coating. The lifting plate 5041 is vertically mounted on the top surface of the lifting plate 503. Multiple guide rods are provided on the bottom surface of the lifting plate 5041, spaced circumferentially. The lifting plate 503 has guide holes corresponding to the guide rods, which slide in a one-to-one correspondence to provide axial sliding guidance for the lifting plate 5041. The smooth structural layer 5042 is embedded in the top of the lifting plate 5041. The two ends of a spring 505 interact with both the lifting plate 503 and the lifting plate 5041. The spring 505 compresses or extends according to the force applied during the lifting process, providing an adaptive lifting force to the lifting plate 5041.

[0048] During demolding, when the lifting plate 503 rises, the smooth structural layer 5042 first contacts the bottom surface of the product. Because the smooth structural layer 5042 has a very low coefficient of friction, when the clamping ring 5022 drives the mold 4 to rotate, the smooth structural layer 5042 slides along the bottom surface of the product, reducing friction and ensuring smooth movement. When the adhesion between the product and the inner wall of the mold 4 is uneven, the rotation of the mold 4 allows the lifting unit 504 to act sequentially on different circumferential positions of the product's bottom surface. This allows the lifting force to be applied more evenly to different positions on the bottom surface of the product, thus adapting to the adhesion resistance between the product and the mold 4 and improving demolding compliance.

[0049] In a specific embodiment, the mold 4 consists of an inner ring 401 and an outer ring 402 nested together. The outer wall of the inner ring 401 is provided with an annular cooling groove 403, which serves to contain the cooling medium. The flow of the cooling medium carries away heat, thereby reducing the temperature of the area where the inner ring 401 contacts the product, reducing the thermal expansion of the product, and facilitating demolding. The outer ring 402 has an inlet 404 and an outlet 405 that communicate with the cooling groove 403. The inlet 404 is used to connect to an external cooling medium delivery unit, such as a fan. The cooling medium is delivered to the cooling groove 403 through the inlet 404. After absorbing heat in the cooling groove 403, the cooling medium flows out from the outlet 405, completing the heat exchange.

[0050] The outer ring 402 has a positioning groove 406 at its bottom outer wall, and the lower clamping ring 5022 has a corresponding positioning part 5026. The positioning part 5026 corresponds one-to-one with the positioning groove 406 and can be engaged. When the mold 4 is placed on the lower clamping ring 5022, the positioning part 5026 can be embedded in the positioning groove 406, which helps to position the mold 4 and the lower clamping ring 5022 and prevents the mold 4 from shifting during demolding. A conveying pipe 506 is provided on the positioning part 5026. When the positioning part 5026 is engaged with the positioning groove 406, the conveying pipe 506 can be connected to the inlet 404 to realize the connection of the cooling medium conveying path.

[0051] When mold 4 is transferred to the positioning unit 502 of demolding mechanism 5, the operator places mold 4 on the lower clamping ring 5022. At this time, the positioning part 5026 on the lower clamping ring 5022 is embedded in the positioning groove 406 at the bottom of the outer wall of outer ring 402, realizing the stable positioning of mold 4. At the same time, the conveying pipe 506 on the positioning part 5026 is connected to the inlet 404 of outer ring 402. Then, the external cooling medium conveying unit is activated, and the cooling medium enters the cooling tank 403 through the conveying pipe 506 and the inlet 404. The cooling medium flows in the cooling tank 403 and exchanges heat with the inner ring 401, thereby reducing the temperature of the area where the inner ring 401 contacts the product. The dimensional changes of the product caused by thermal expansion are alleviated, and the friction between the product and the inner wall of mold 4 is reduced accordingly. After a certain cooling time, demolding mechanism 5 is activated, and lifting unit 504 rises under the drive of lifting plate 503, contacts the bottom surface of the product and applies lifting force. Since the friction between the product and the inner wall of mold 4 is reduced due to cooling, the product can be more easily removed from mold 4.

[0052] In one specific embodiment, the lower template 3 is slidably mounted on the frame 1. A guide rail is provided on the frame 1, and the bottom of the lower template 3 engages with the guide rail, allowing it to slide along the guide rail direction, thereby moving away from or closer to the position below the upper template 2. The driving device for the lower template 3 can be a conventional driving device such as an electric screw mechanism.

[0053] Before vulcanization, the mold 4 filled with rubber and steel sheet raw materials needs to be placed on the lower mold plate 3. At this time, the driving device of the lower mold plate 3 is started, so that the lower mold plate 3 slides along the guide rail, moves away from the position below the upper mold plate 2, and moves to a position that is more convenient for the operator to place the mold 4. This eliminates the need to operate in a narrow space, reduces the difficulty of operation, and improves safety.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of protection of the claims of the present invention.

Claims

1. A vulcanizing machine for producing rubber bearings, characterized in that, It includes a frame (1), an upper template (2), a lower template (3), a mold (4), and a demolding mechanism (5). The upper template (2) is raised and lowered on the frame (1), and the lower template (3) is set on the frame (1). The mold (4) is annular and is used to fill raw materials. The upper template (2) and the lower template (3) are used to clamp the mold (4) and vulcanize the raw materials. The demolding mechanism (5) includes a bracket (501), a positioning unit (502), a lifting plate (503), a lifting unit (504), and a spring (505). The bracket (501) is mounted on the frame (1), and the positioning unit (502) is mounted on the bracket (501). The positioning unit (502) can fix the mold (4) containing the vulcanized product. The lifting plate (503) is mounted on the bracket (501) and located below the positioning unit (502). The top surface of the lifting plate (503) is provided with a lifting unit (504). There are multiple lifting units (504) and they are spaced apart circumferentially. A spring (505) is provided between each lifting unit (504) and the lifting plate (503). The spring (505) is used to provide the lifting unit (504) with the force to push the bottom surface of the product upward. Multiple lifting units (504) can abut against the bottom surface of the product under the action of the lifting plate (503), and provide their own independent supporting force to various parts of the bottom surface of the product under the action of the spring (505) to push the product out of the mold (4); The positioning unit (502) includes a lower clamping ring (5022) and an upper clamping ring (5023). The lower clamping ring (5022) is disposed on the bracket (501), and the upper clamping ring (5023) is scissorsly disposed on the bracket (501). The lower clamping ring (5022) and the upper clamping ring (5023) can jointly clamp the mold (4). An mounting ring (5021) is rotatably mounted on the bracket (501). An upper clamping ring (5023) is raised and lowered on the mounting ring (5021). A lower clamping ring (5022) is rotatably mounted on the bracket (501). A gear ring (5024) is coaxially mounted on the lower clamping ring (5022). A gear (5025) is rotatably mounted on the bracket (501). The gear (5025) meshes with the gear ring (5024) and is driven by an external drive unit. The lower clamping ring (5022) can rotate under the drive of the gear (5025) to drive the mold (4) to rotate.

2. The vulcanizing machine for producing rubber bearings according to claim 1, characterized in that, The inner diameter edges of the upper clamping ring (5023) and the lower clamping ring (5022) are configured to be flush with the inner diameter edges of the top and bottom of the mold (4), respectively, so that the upper clamping ring (5023) can press the flash of the top edge of the product to the top surface of the mold (4), and the lower clamping ring (5022) can press the flash of the bottom edge of the product to the bottom surface of the mold (4), and tear off the flash after the product is ejected from the mold (4).

3. The vulcanizing machine for producing rubber bearings according to claim 1, characterized in that, The lifting unit (504) includes a lifting plate (5041) and a smooth structural layer (5042). The lifting plate (5041) is raised and lowered on the top surface of the lifting plate (503). The two ends of the spring (505) act on the lifting plate (503) and the lifting plate (5041) respectively. The smooth structural layer (5042) is located on the top of the lifting plate (5041). The smooth structural layer (5042) is used to contact the bottom surface of the product and slides along the bottom surface of the product when the mold (4) drives the product to rotate.

4. A vulcanizing machine for producing rubber bearings according to claim 1, characterized in that, The mold (4) includes an inner ring (401) and an outer ring (402) nested together. The outer wall of the inner ring (401) is provided with an annular cooling groove (403). The outer ring (402) has an inlet (404) and an outlet (405) communicating with the cooling groove (403). The inlet (404) is used to connect with an external cooling medium delivery unit to deliver cooling medium into the cooling groove (403) and reduce the temperature of the inner ring (401) and the product.

5. A vulcanizing machine for producing rubber bearings according to claim 4, characterized in that, The outer ring (402) has a positioning groove (406) at the bottom of its outer wall, and the lower clamping ring (5022) has a positioning part (5026) for engaging with the positioning groove (406). There are multiple positioning parts (5026) and positioning grooves (406) respectively.

6. A vulcanizing machine for producing rubber bearings according to claim 5, characterized in that, The positioning part (5026) is provided with a conveying pipe (506), the positioning groove (406) is connected to the inlet (404), the conveying pipe (506) can be connected to the inlet (404) after the positioning part (5026) and the positioning groove (406) are engaged, and the conveying pipe (506) is used to connect to an external cooling medium conveying unit.

7. A vulcanizing machine for producing rubber bearings according to claim 1, characterized in that, Both the upper clamping ring (5023) and the lower clamping ring (5022) have flexible anti-slip ribs (5027) on their contact surfaces with the mold (4).

8. A vulcanizing machine for producing rubber bearings according to claim 1, characterized in that, The lower template (3) is slidably mounted on the frame (1). After the lower template (3) is slid, it can move away from the lower part of the upper template (2) so as to place the mold (4).

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