A mold cooling device for rubber sealing ring production

Abstract

The application provides a mold cooling device for rubber sealing ring production and belongs to the technical field of mold cooling. The device comprises a base, four base feet symmetrically arranged on the top of the base, a lower mold base arranged on the top of the four base feet, a support frame arranged on the top of the base near the outer side of the four base feet, an electric push rod fixedly connected to the top of the support frame through bolts, a upper mold base fixedly connected to the output end on one side of the electric push rod, a threaded hole arranged on the top of the lower mold base at the central position, and a sealing ring forming mold core arranged on the top of the lower mold base near the outer circumferential position of the threaded hole. The lower mold base and the upper mold base can be connected in the middle, a channel for the cooling liquid to flow from bottom to top can be formed after the lower mold base and the upper mold base are connected and the rubber sealing ring is injection molded, the cooling liquid can fully contact the middle part of the mold and the inner circumferential position of the rubber sealing ring, and the middle part of the mold can be effectively cooled and cooled down.

Description

Technical Field

[0001] This invention belongs to the field of mold cooling technology, specifically relating to a mold cooling device for the production of rubber sealing rings. Background Technology

[0002] Rubber seals are key sealing components widely used in machinery, automobiles, electronics, petrochemicals and other fields. They are mainly used to prevent liquid or gas leakage and ensure the safe and stable operation of equipment in high-pressure, high-temperature or complex media environments. The production process of rubber seals requires the use of injection molds. The injection molds generate a lot of heat before and after the rubber seals are formed, so the injection molds need to be cooled in order to improve the forming efficiency of the rubber seals.

[0003] Because the molded rubber seal is a ring structure, heat will accumulate near the inner circumference of the rubber seal in the injection mold, resulting in a high temperature in the middle of the mold. This makes it difficult for the rubber seal to cool evenly, affecting the molding quality and reducing molding efficiency. In addition, the coolant flowing along the flow path will gradually increase in temperature after flowing a long distance, resulting in poor heat exchange and poor cooling effect in the latter half of the flow, leading to uneven cooling of the mold.

[0004] Therefore, a mold cooling device for rubber sealing ring production is proposed. Summary of the Invention

[0005] The present invention provides a mold cooling device for the production of rubber sealing rings, the purpose of which is to solve the problems mentioned above.

[0006] This invention provides a mold cooling device for producing rubber sealing rings, including a base, four base feet symmetrically arranged on the top of the base, a lower mold base arranged on the top of the four base feet, a support frame arranged on the top of the base near the outer side of the four base feet, an electric push rod fixedly connected to the top of the support frame by bolts, and an upper mold base fixedly connected to the electric push rod through its output end on one side. A threaded hole is provided at the center of the top of the lower mold base, and a sealing ring forming mold core is provided at the outer periphery of the threaded hole on the top of the lower mold base. A coolant inlet pipe is provided at the bottom of the lower mold base near the threaded hole. The bottom of the upper mold base has a sealing ring forming cavity that matches and fits the sealing ring forming mold core. A through hole is provided at the center of the top of the upper mold base near the inner circumference of the sealing ring forming mold cavity. A guide rod is provided at the top of the upper mold base, and the guide rod movably passes through the support frame. A dynamic sealing sleeve is rotatably connected inside the through hole. A threaded sleeve is provided at the bottom end of the dynamic sealing sleeve, and a driven gear is provided on the outer circumference of the dynamic sealing sleeve near the top of the upper mold base. A connecting tube is rotatably connected to the top of the dynamic sealing sleeve. A U-shaped tube is provided at the top end of the connecting tube, and a corrugated telescopic tube is provided at one end of the U-shaped tube. A fixing frame is provided on the top of the upper mold base near the dynamic sealing sleeve. A servo motor is fixedly connected to the top of the fixing frame by bolts. A drive gear is fixedly connected to the output end of the servo motor on one side. The drive gear and the driven gear are connected by gear meshing.

[0007] Furthermore, both the lower mold base and the upper mold base have side cooling channels in the vertical direction near the sealing ring forming cavity, and both the lower mold base and the upper mold base have interconnected liquid inlet and outlet channels at the outer periphery of the side cooling channels. Both the lower mold base and the upper mold base have interconnected liquid inlet and outlet pipes on one side of the outer wall near the liquid inlet and outlet channels. A partition plate is provided at the center of the liquid inlet and outlet channels, the side cooling channels, and the liquid inlet and outlet pipes.

[0008] Furthermore, a peripheral cooling channel is provided inside the upper mold base near the outer periphery of the sealing ring forming cavity. Through holes one, two, and three are provided on the inner wall of the peripheral cooling channel. Through hole one is located on the horizontal side of through hole two and on the vertical side of through hole three. A flow direction switching cavity and a cavity are provided inside the upper mold base near the outer periphery of the peripheral cooling channel. The flow direction switching cavity is located on one side of the cavity. A cylinder is provided on the inner wall of one side of the cavity. The cylinder is fixedly connected to the flow direction switching platform through its output end. A coolant inlet pipe two and a coolant outlet pipe are provided on the outer wall of one side of the upper mold base. The coolant inlet pipe two is located on one side of the coolant outlet pipe.

[0009] Furthermore, an h-shaped channel is provided on one side of the outer wall of the flow-to-switching station, and an L-shaped channel is provided on the other side of the outer wall of the flow-to-switching station.

[0010] Furthermore, a coolant heat exchange tank is provided on the top of the base near one of the four base feet. Heat dissipation fins are provided on one outer wall of the coolant heat exchange tank. The coolant inlet pipe, coolant outlet pipe, inlet and outlet pipes and corrugated expansion pipe are all fixedly connected to and communicate with the coolant heat exchange tank.

[0011] Furthermore, the side cooling channel, separated by the partition plate, allows the coolant to flow in an arc-shaped trajectory, and the inlet / outlet channel and the inlet / outlet pipe form two independent spaces separated by the partition plate. By adopting the above technical solution, the partition plate can be used to separate the liquid inlet / outlet channel, the side cooling channel, and the liquid inlet / outlet pipe into two parts, and the coolant can flow independently in the two parts. This allows the coolant to circulate and carry away the heat in the mold during the circulation process, thus cooling the mold. Furthermore, the coolant, which flows in an arc-shaped trajectory, can effectively carry away the heat generated on the upper and lower sides of the rubber sealing ring, improving the local cooling effect on the mold.

[0012] Furthermore, the third through hole is located on the horizontal side of the L-shaped channel, while the first and second through holes are located on one side of the h-shaped channel; By adopting the above technical solution, during the movement of the flow direction switching table, through hole three and the L-shaped channel can overlap or be misaligned, and through hole one and through hole two can overlap or be misaligned with the h-shaped channel.

[0013] Furthermore, the outer wall of the flow direction switching platform and the inner wall of the flow direction switching cavity are dynamically sealed together; By adopting the above technical solution, the dynamic sealing is used to ensure the sealing of the flow direction switching platform as it moves in the flow direction switching cavity, thus avoiding the coolant flow direction misalignment. The coolant flow direction control capability brought about by the movement of the flow direction switching platform inside the flow direction switching cavity can change the flow direction of the coolant in the peripheral cooling channel, thereby avoiding the problem of reduced cooling effect in the latter half of the peripheral cooling channel due to increased coolant temperature, and ensuring the uniformity of mold cooling.

[0014] The beneficial effects of this invention are as follows: 1. The present invention, through the interconnected lower and upper mold bases in the middle, forms a channel through which coolant can flow from bottom to top after the lower and upper mold bases are connected and the rubber sealing ring is injection molded. This allows the coolant to fully contact the middle of the mold and the inner circumference of the rubber sealing ring, thereby effectively cooling the middle area of ​​the mold and avoiding the problems of uneven cooling of the rubber sealing ring, poor molding quality, and low molding efficiency caused by high temperature in the middle area of ​​the mold.

[0015] 2. This invention utilizes the circulating flow of coolant along the upper and lower sides of the rubber sealing ring to focus on cooling areas with high heat effects, reducing the amount of heat diffusion to other areas of the mold, and cooling the rubber sealing ring in multiple directions, thereby improving the cooling and molding speed of the rubber sealing ring.

[0016] 3. This invention uses a flow switching platform to switch the flow direction of the coolant entering the peripheral cooling channel, so that the coolant enters in batches and intermittently from both ends of the peripheral cooling channel. This reduces the flow path of the coolant in a single stroke, thereby allowing the cooler coolant to fully contact the front and rear halves of the peripheral cooling channel, ensuring the temperature difference, improving the heat exchange rate, and ensuring uniform and efficient cooling of the mold.

[0017] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the lower mold base structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the upper mold base structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the dynamic sealing sleeve structure according to an embodiment of the present invention; Figure 5 This is a three-dimensional cross-sectional schematic diagram of the upper mold base according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the flow direction switching station structure according to an embodiment of the present invention; Figure 7 This is a three-dimensional cross-sectional schematic diagram of the upper mold base according to an embodiment of the present invention (with the peripheral cooling channel exposed). Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged diagram of point A in the diagram; Figure 9 This is a three-dimensional cross-sectional schematic diagram of the upper mold base according to an embodiment of the present invention (with the side cooling channel exposed). Reference numerals: 1. Base; 11. Foot; 12. Support frame; 121. Electric push rod; 2. Lower mold base; 21. Sealing ring forming mold core; 22. Threaded hole; 23. Coolant inlet pipe one; 3. Upper mold base; 31. Sealing ring forming mold cavity; 311. Through hole; 32. Guide rod; 33. Dynamic sealing sleeve; 331. Threaded sleeve; 332. Driven gear; 333. Connecting pipe; 334. U-shaped pipe; 335. Corrugated telescopic pipe; 34. Fixing frame; 341. Servo motor; 342. 35. Drive gear; 36. Inlet / outlet channel; 37. Side cooling channel; 38. Inlet / outlet pipe; 39. Partition plate; 30. Circumferential cooling channel; 31. Through hole one; 32. Through hole two; 33. Through hole three; 34. Flow direction switching chamber; 35. Cavity; 36. Cylinder; 37. Flow direction switching platform; 38. H-shaped channel; 39. L-shaped channel; 40. Coolant inlet pipe two; 41. Coolant heat exchanger; 42. Heat dissipation fins. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Reference Figure 1-4 This invention provides a mold cooling device for producing rubber sealing rings, including a base 1. Four base feet 11 are symmetrically arranged on the top of the base 1. A lower mold base 2 is arranged on the top of the four base feet 11. A support frame 12 is arranged on the top of the base 1 near the outer side of the four base feet 11. An electric push rod 121 is fixedly connected to the top of the support frame 12 by bolts. An upper mold base 3 is fixedly connected to the electric push rod 121 through its output end on one side. A threaded hole 22 is provided at the center of the top of the lower mold base 2, and a sealing ring forming mold core 21 is provided at the outer periphery of the threaded hole 22 at the top of the lower mold base 2. A coolant inlet pipe 23 is provided at the bottom of the lower mold base 2, directly below the threaded hole 22. The bottom of the upper mold base 3 has a sealing ring forming cavity 31 that matches and fits the sealing ring forming mold core 21. A through hole 311 is provided at the center of the top of the upper mold base 3 near the inner circumference of the sealing ring forming cavity 31. A guide rod 32 is provided at the top of the upper mold base 3, which movably passes through the support frame 12. A movable sealing sleeve 33 is rotatably connected inside the through hole 311. A threaded sleeve 331 is provided at the bottom end of the movable sealing sleeve 33, and a driven part is provided on the outer circumference of the movable sealing sleeve 33 near the top of the upper mold base 3. The gear 332 has a connecting pipe 333 rotating at the top of the dynamic sealing sleeve 33. The top of the connecting pipe 333 is provided with a U-shaped tube 334. One end of the U-shaped tube 334 is provided with a corrugated telescopic tube 335. A fixing frame 34 is provided on the top of the upper mold base 3 near the dynamic sealing sleeve 33. A servo motor 341 is fixedly connected to the top of the fixing frame 34 by bolts. The servo motor 341 is fixedly connected to the driving gear 342 through its output end on one side. The driving gear 342 and the driven gear 332 are connected by gear meshing. To achieve cooling in the central region of the mold, in this embodiment, a channel for coolant to flow from bottom to top is formed by the interconnected lower mold base 2 and upper mold base 3 after the lower mold base 2 and upper mold base 3 are joined and the rubber sealing ring is injection molded. This allows the coolant to fully contact the central region of the mold and the inner circumference of the rubber sealing ring, thereby effectively cooling the central region of the mold and avoiding problems such as uneven cooling of the rubber sealing ring, poor molding quality, and low molding efficiency caused by high temperature in the central region of the mold. Specifically, when molding the rubber sealing ring, the electric push rod 121 drives the upper mold base 3 to move vertically downward through its output end. Under the vertical guidance of the guide rod 32, the servo motor 341 drives the drive gear 342 to rotate through its output end. Through the meshing transmission between the drive gear 342 and the driven gear 332, the driven gear 332 is pulled to rotate, causing the moving sealing sleeve 33 and the threaded sleeve 331 to rotate. Synchronous rotation: As the upper mold base 3 gradually moves downward, the threaded sleeve 331 and the threaded hole 22 first come into contact, controlling the downward movement speed of the upper mold base 3 so that the downward speed of the upper mold base 3 is the same as the downward displacement speed generated by the screwing of the threaded sleeve 331 and the threaded hole 22, until the upper mold base 3 contacts and abuts against the lower mold base 2. The sealing ring forming mold core 21 and the sealing ring forming mold cavity 31 are connected to form a rubber sealing ring forming cavity. Then, the hot melt raw material is injected into the interior of the rubber sealing ring forming cavity through the injection channel. The heat in the raw material is conducted to the lower mold base 2 and the upper mold base 3. As the raw material cools, the rubber sealing ring is gradually formed. Coolant is injected into the coolant inlet pipe 23. Under the guidance of the coolant inlet pipe 23, the coolant passes through the lower mold base 2 and the upper mold base 3 in sequence. The coolant flows from bottom to top from the middle of the lower mold base 2 and the upper mold base 3. During the flow, it exchanges heat with the lower mold base 2 and the upper mold base 3. The heat in the lower mold base 2 and the upper mold base 3 is carried away by the coolant, realizing mold cooling.

[0021] Example 2 Reference Figure 9 This embodiment of the invention also proposes that side cooling channels 351 are provided vertically in the interior of both the lower mold base 2 and the upper mold base 3 near the sealing ring forming cavity 31, and interconnected liquid inlet and outlet channels 35 are provided in the interior of both the lower mold base 2 and the upper mold base 3 near the outer periphery of the side cooling channels 351. Connected liquid inlet and outlet pipes 352 are provided on one side of the outer wall of both the lower mold base 2 and the upper mold base 3 near the side end of the liquid inlet and outlet channels 35. A partition plate 353 is provided at the central position inside the liquid inlet and outlet channels 35, the side cooling channels 351, and the liquid inlet and outlet pipes 352. The side cooling channels 351 are separated by the partition plate 353. The coolant flows in an arc-shaped trajectory. The inlet / outlet channel 35 and the inlet / outlet pipe 352 are separated into two independent spaces by the partition plate 353. By utilizing the separating performance of the partition plate 353, the inlet / outlet channel 35, the side cooling channel 351, and the inlet / outlet pipe 352 can all be divided into two parts, and the coolant can flow independently in the two parts, so that the coolant can circulate. During the circulation of the coolant, the heat in the mold is carried away, thereby cooling the mold. The coolant flowing in an arc-shaped trajectory can also effectively carry away the heat generated on the upper and lower sides of the rubber sealing ring, improving the local cooling effect of the mold. To achieve cooling of the area near the upper and lower sides of the rubber seal ring inside the mold, in this embodiment, the coolant circulates along the area where the upper and lower sides of the rubber seal ring are located. This allows for focused cooling of areas with high heat effects, reducing heat diffusion to other areas of the mold, and cooling the rubber seal ring in multiple directions, thereby increasing the cooling and molding speed of the rubber seal ring. Specifically, when cooling the mold area where the upper and lower sides of the rubber seal ring are located, the coolant enters the inlet / outlet channel 35 and the side cooling channel 351 through the inlet / outlet pipe 352. Under the separation of the partition plate 353, the inlet / outlet channel 35, the side cooling channel 351, and the inlet / outlet pipe 352 form two independent parts. The coolant circulates in an "Ω" shape inside the lower mold base 2 and the upper mold base 3 along the coolant channel 35 and the side cooling channel 351. As the coolant contacts the lower mold base 2 and the upper mold base 3 and exchanges heat, it carries away the heat in the mold during the circulation process, thus cooling the mold. The coolant that has absorbed heat leaves the mold, carrying away the heat in the mold.

[0022] Example 3 Reference Figure 5-8This embodiment of the invention also proposes that a peripheral cooling channel 36 is provided inside the upper mold base 3 near the outer periphery of the sealing ring forming cavity 31. A through hole 361, a through hole 362, and a through hole 363 are provided on the inner wall of the peripheral cooling channel 36. The through hole 361 is located on the horizontal side of the through hole 362, and the through hole 361 is located on the vertical side of the through hole 363. A flow direction switching cavity 37 is provided inside the upper mold base 3 near the outer periphery of the peripheral cooling channel 36. A flow direction switching chamber 37 is located on one side of cavity 371, and a cylinder 372 is installed on the inner wall of one side of cavity 371. A flow direction switching platform 373 is fixedly connected to the cylinder 372 through its output end. The outer wall of the flow direction switching platform 373 and the inner wall of the flow direction switching chamber 37 are dynamically sealed together. The dynamic sealing ensures the sealing of the flow direction switching platform 373 as it moves in the flow direction switching chamber 37, preventing the coolant from flowing in the wrong direction. The flow direction switching platform 373 is used to switch the flow direction. The ability to control the flow of coolant due to the internal movement of the changing cavity 37 can change the flow direction of coolant in the peripheral cooling channel 36, thereby avoiding the problem of reduced cooling effect in the latter half of the peripheral cooling channel 36 due to increased coolant temperature, and ensuring the uniformity of mold cooling. A coolant inlet pipe 38 and a coolant outlet pipe 39 are provided on one side of the outer wall of the upper mold base 3. The coolant inlet pipe 38 is located on one side of the coolant outlet pipe 39, flowing towards the outer wall of the switching platform 373. An h-shaped channel 3731 is provided, and an L-shaped channel 3732 is provided on the outer wall of the other side of the flow-to-switching platform 373. Through hole 363 is located on the horizontal side of the L-shaped channel 3732, and through hole 1 361 and through hole 2 362 are located on one side of the h-shaped channel 3731. During the flow-to-switching platform 373, through hole 363 and L-shaped channel 3732 can overlap or be misaligned, and through hole 1 361 and through hole 2 362 can overlap or be misaligned with the h-shaped channel 3731. A coolant heat exchange tank 4 is installed on the top of the base 1 near one of the four base feet 11. Heat dissipation fins 41 are installed on one outer wall of the coolant heat exchange tank 4. The coolant inlet pipe 38, coolant outlet pipe 39, inlet and outlet pipes 352 and corrugated expansion pipe 335 are all fixedly connected to and communicate with the coolant heat exchange tank 4. The coolant heat exchange tank 4 contains lubricating coolant. The cooling pipes are installed inside the tank. The coolant is cooled by the circulation of cooling water. The coolant inlet and outlet are connected to the cooling pipes to form independent cooling water circulation channels. The coolant heat exchange tank 4 is equipped with a circulation pump. The circulation pump pumps the cooled coolant into the coolant inlet pipe 23, coolant inlet pipe 38 and inlet and outlet pipes 352 to realize the circulation of coolant. To achieve cooling of the area near the outer periphery of the rubber seal ring inside the mold, in this embodiment, the flow direction of the coolant entering the peripheral cooling channel 36 is switched by the flow direction switching table 373. This allows the coolant to enter in batches and intermittently from both ends of the peripheral cooling channel 36, reducing the flow path of the coolant in a single stroke. This ensures that the coolant at a lower temperature fully contacts the front and rear halves of the peripheral cooling channel 36, maintaining a temperature difference, increasing the heat exchange rate, and ensuring uniform and efficient mold cooling. Specifically, when cooling the mold area where the outer periphery of the rubber seal ring is located, the coolant enters the upper mold base 3 through the coolant inlet pipe 38. At this time, the control... Cylinder 372 drives flow switching platform 373 to move inside flow switching chamber 37 via its output end, causing one end of h-shaped channel 3731 to coincide with through hole 361 and the other end of h-shaped channel 3731 to coincide with coolant inlet pipe 38. Flow switching platform 373 and through hole 362 are misaligned (through hole 362 is exposed and connected to flow switching chamber 37). One end of L-shaped channel 3732 on flow switching platform 373 is misaligned with through hole 363. At this time, coolant entering through coolant inlet pipe 38 passes through h-shaped channel 3731 and through hole 361 sequentially into peripheral cooling channel 36. The coolant then cools in peripheral cooling channel 36. The internal flow of the coolant rotates clockwise and enters the flow direction switching chamber 37 through through-hole 2 362, then flows out of the mold through the coolant outlet pipe 39. Through the flow of coolant within the peripheral cooling channel 36, the coolant exchanges heat with the mold and carries away the absorbed heat. After a period of cooling operation, the control cylinder 372 drives the flow direction switching platform 373 to move within the flow direction switching chamber 37 via its output end. This causes one end of the H-shaped channel 3731 to coincide with through-hole 2 362, the other end of the H-shaped channel 3731 to coincide with coolant inlet pipe 2 38, and one end of the L-shaped channel 3732 to coincide with through-hole 363. Through-hole 1 361 is then filled with coolant. When the switching platform 373 is blocked, the coolant entering through the coolant inlet pipe 38 passes through the H-shaped channel 3731 and the through hole 362 in sequence and enters the peripheral cooling channel 36. The coolant moves counterclockwise in the interior of the peripheral cooling channel 36 and enters the L-shaped channel 3732 through the through hole 363. Guided by the L-shaped channel 3732, it flows into the switching chamber 37 and exits the mold through the coolant outlet pipe 39. By repeatedly switching the direction of the coolant entering the peripheral cooling channel 36, the coolant with the reduced temperature can contact the front and rear ends of the peripheral cooling channel 36 respectively, ensuring the temperature difference, improving the heat exchange rate, and ensuring the uniformity and efficiency of mold cooling.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A mold cooling device for producing rubber sealing rings, characterized in that: Includes a base (1), the top of which is symmetrically provided with four base feet (11), the top of which is provided with a lower mold base (2), the top of which is provided with a support frame (12) near the outer side of the four base feet (11), the top of which is fixedly connected with an electric push rod (121) by bolts, and the electric push rod (121) is fixedly connected with an upper mold base (3) through its output end on one side; A threaded hole (22) is provided at the center of the top of the lower mold base (2), and a sealing ring forming mold core (21) is provided at the outer periphery of the threaded hole (22) at the top of the lower mold base (2), and a coolant inlet pipe (23) is provided at the bottom of the lower mold base (2) directly below the threaded hole (22). The bottom of the upper mold base (3) is provided with a sealing ring forming cavity (31) that matches and fits the sealing ring forming mold core (21). A through hole (311) is provided at the top center of the upper mold base (3) near the inner circumference of the sealing ring forming cavity (31). A guide rod (32) is provided at the top of the upper mold base (3). The guide rod (32) movably passes through the support frame (12). A dynamic sealing sleeve (33) is rotatably connected inside the through hole (311). A threaded sleeve (331) is provided at the bottom end of the dynamic sealing sleeve (33). A driven gear is provided on the outer circumference of the dynamic sealing sleeve (33) near the upper mold base (3). (332), the top of the dynamic sealing sleeve (33) is rotated with a connecting pipe (333), the top of the connecting pipe (333) is provided with a U-shaped pipe (334), one end of the U-shaped pipe (334) is provided with a corrugated telescopic pipe (335), the top of the upper mold base (3) is provided with a fixing frame (34) near the dynamic sealing sleeve (33), the top of the fixing frame (34) is fixedly connected with a servo motor (341) by bolts, the servo motor (341) is fixedly connected with a drive gear (342) through its output end, and the drive gear (342) and the driven gear (332) are connected by gear meshing.

2. The mold cooling device for producing rubber sealing rings according to claim 1, characterized in that: The lower mold base (2) and the upper mold base (3) are provided with side cooling channels (351) in the vertical direction near the sealing ring forming cavity (31) inside. The lower mold base (2) and the upper mold base (3) are provided with interconnected liquid inlet and outlet channels (35) at the outer periphery of the side cooling channels (351) inside. The lower mold base (2) and the upper mold base (3) are provided with interconnected liquid inlet and outlet pipes (352) on one side of the outer wall near the liquid inlet and outlet channels (35). A partition plate (353) is provided at the center of the liquid inlet and outlet channels (35), the side cooling channels (351) and the liquid inlet and outlet pipes (352).

3. The mold cooling device for producing rubber sealing rings according to claim 2, characterized in that: A peripheral cooling channel (36) is provided inside the upper mold base (3) near the outer periphery of the sealing ring forming mold cavity (31). A through hole 1 (361), a through hole 2 (362), and a through hole 3 (363) are provided on the inner wall of the peripheral cooling channel (36). Through hole 1 (361) is located on the horizontal side of through hole 2 (362), and through hole 1 (361) is located on the vertical side of through hole 3 (363). The peripheral cooling channel (36) is located inside the upper mold base (3) near the outer periphery of the upper mold base (3). The system has a flow direction switching cavity (37) and a cavity (371). The flow direction switching cavity (37) is located on one side of the cavity (371). A cylinder (372) is provided on the inner wall of one side of the cavity (371). The cylinder (372) is fixedly connected to a flow direction switching platform (373) through its output end. A coolant inlet pipe (38) and a coolant outlet pipe (39) are provided on the outer wall of one side of the upper mold base (3). The coolant inlet pipe (38) is located on one side of the coolant outlet pipe (39).

4. The mold cooling device for producing rubber sealing rings according to claim 3, characterized in that: An h-shaped channel (3731) is provided on one side of the outer wall of the flow switching table (373), and an L-shaped channel (3732) is provided on the other side of the outer wall of the flow switching table (373).

5. A mold cooling device for producing rubber sealing rings according to claim 3, characterized in that: A coolant heat exchange tank (4) is provided on the top of the base (1) near the four base feet (11). A heat dissipation fin (41) is provided on the outer wall of one side of the coolant heat exchange tank (4). The coolant inlet pipe (38), coolant outlet pipe (39), inlet and outlet pipes (352) and corrugated expansion pipe (335) are all fixedly connected to and communicate with the coolant heat exchange tank (4).

6. A mold cooling device for producing rubber sealing rings according to claim 2, characterized in that: The side cooling channel (351) is separated by the partition plate (353) so that the coolant flows in an arc-shaped trajectory. The inlet and outlet channels (35) and the inlet and outlet pipes (352) are separated by the partition plate (353) to form two independent spaces.

7. A mold cooling device for producing rubber sealing rings according to claim 4, characterized in that: The third through hole (363) is located on the horizontal side of the L-shaped channel (3732), and the first through hole (361) and the second through hole (362) are located on one side of the h-shaped channel (3731).

8. A mold cooling device for producing rubber sealing rings according to claim 3, characterized in that: The outer wall of the flow direction switching platform (373) and the inner wall of the flow direction switching cavity (37) are dynamically sealed together.

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