A molding die for processing rubber seals

Abstract

The invention discloses a forming mold for processing rubber seals, and belongs to the technical field of rubber seal production. The invention provides a hollow mold sleeve and a mold core which are nested inside and outside and can move up and down. The hollow mold sleeve is composed of a fixed mold sleeve and a movable mold sleeve which are symmetrically arranged front and back. During injection molding, a plurality of mutually unconnected injection mold grooves are formed between the mold core and a plurality of pairs of injection cavities in the hollow mold sleeve. Rubber materials are synchronously injected into the plurality of injection mold grooves through a plurality of groups of injection pipes and injection cavity matching structures. After the injection work is completed, the electromagnetic ring at the limit sleeve is started, and the push cone moves toward one side of the limit sleeve and fits closely with the limit sleeve. On the one hand, the excess rubber material of the injection cavity is pushed to the injection mold groove, and on the other hand, the injection mold groove and the injection cavity are matched without gap. The seal formed by each injection mold groove is an independent individual. After the mold is opened, the movable mold sleeve is separated from the fixed mold sleeve outward, and the fixed mold sleeve is driven to flip downward toward the blanking port, so that collective demolding is achieved under the action of gravity.

Description

Technical Field

[0001] The invention relates to the technical field of rubber seal production, and more specifically to a molding die for processing rubber seals. Background Art

[0002] Seals are materials or parts that prevent fluids or solid particles from leaking from adjacent mating surfaces and prevent external impurities such as dust and moisture from invading the internal components of machinery and equipment. Rubber seals require the use of molding molds in the production process. Molding molds are the main molding equipment for making thermoplastic plastics or thermosetting pellets into annular rubber seals.

[0003] In order to improve the injection molding efficiency, traditional seal injection molds usually have multiple injection mold grooves arranged inside. The multiple injection mold grooves are interconnected through injection holes. Therefore, after injection molding, all the seals are connected together through injection connection branches formed by connecting the injection holes. It is necessary to use cutting tools to disconnect the connection branches from the seals, which reduces the production efficiency of the seals. In addition, for sealing rings with corrugated or threaded protrusions on the side walls, the rubber seal fits tightly with the mold, and the demolding process is more difficult. It is necessary to manually apply force to deform the sealing ring and make it fall off from the middle mold. The operation is inconvenient and affects the quality of the seal after demolding.

[0004] Therefore, we propose a molding die for processing rubber seals in view of the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the existing practical problems. Compared with the existing technology, a molding mold for rubber seal processing is provided, which is through arranging a hollow mold sleeve and a mold core that are nested inside and outside and can move up and down. During injection molding, a plurality of mutually unconnected injection mold grooves are formed between the mold core and multiple pairs of injection cavities in the hollow mold sleeve. Rubber materials are simultaneously injected into multiple injection mold grooves through multiple groups of injection pipes and injection cavity matching structures. After the injection work is completed, the electromagnetic ring at the limit sleeve is started, and the pusher cone moves toward one side of the limit sleeve and fits closely with it. On the one hand, the excess rubber material in the injection cavity is pushed to the injection mold groove, and on the other hand, the injection mold groove and the injection cavity are matched without gap. The seal formed by each injection mold groove is an independent individual. After the mold is opened, the movable mold sleeve separates from the fixed mold sleeve outward, drives the fixed mold sleeve to flip downward toward the blanking port, and realizes collective demolding under the action of gravity.

[0006] The object of the present invention can be achieved by the following technical scheme: a forming mold for processing rubber seals, comprising an upper mold, a middle mold and a lower mold, the upper mold and the lower mold move up and down relative to the fixedly installed middle mold, the end wall of the middle mold is provided with a plurality of groups of mold-matching grooves distributed in an array and penetrating up and down, the left and right ends of the lower mold are fixedly connected with lifting plates, a plurality of rotating columns are rotatably installed between the relative end walls of the lifting plates, a plurality of hollow mold sleeves matching the mold-matching grooves are installed on each rotating column, the hollow mold sleeve comprises a fixed mold sleeve and a movable mold sleeve symmetrically distributed front and back, a plurality of injection cavities distributed up and down are provided on the inner hole walls of the fixed mold sleeve and the movable mold sleeve, the fixed mold sleeve is fixed on the rotating column, a plurality of groups of movable mold sleeves distributed front and back are installed on the front end of the fixed mold sleeve by horizontal driving of a pushing structure, and a plurality of blanking openings are provided on the lower mold below the movable mold sleeve;

[0007] The upper mold is penetrated by a plurality of mold cores corresponding to the positions of the hollow mold sleeves, and a plurality of injection cavities connected one by one with the injection cavities are opened upward in a spiral direction on the end wall of the mold core, and a plurality of injection tubes connected one by one with the top of the injection cavity are annularly embedded inside the mold core, and each of the injection cavities is embedded with a pushing structure.

[0008] Furthermore, support plates are fixed on both sides of the bottom end of the middle mold, and both sides of the upper end of the support plate are fixedly connected to the upper mold through electric push cylinders. The left and right end walls of the support plate are embedded with electric guide rails for driving the lifting plate to lift and lower, so that the upper and lower molds can move up and down in the vertical direction relative to the upper mold to complete the mold closing and opening operations.

[0009] Furthermore, sliders are fixedly connected to the left and right bottom end walls of the movable mold sleeve, and a slideway is provided on the upper end wall of the lower mold, which is connected to the bottom end of the fixed mold sleeve and extends outward, and the bottom end of the slider is slidably installed on the slideway.

[0010] Furthermore, the pushing structure includes an arm extending through and fixedly connected between a plurality of sliding blocks arranged in the front-to-rear direction, the front ends of the plurality of arm rods are commonly fixedly connected with a pushing rod, and both sides of the upper end of the lower mold are fixedly connected with electric push rods whose telescopic ends are connected to the end walls of the pushing rods. The driving structure drives the plurality of movable mold sleeves to slide in the horizontal direction, thereby realizing the closing and opening of the molds between the fixed mold sleeve and the movable mold sleeve.

[0011] Furthermore, an electromagnetic sheet is embedded and installed on the inner end wall of the fixed mold sleeve close to the movable mold sleeve, and a magnetic attraction layer that is magnetically attracted to the electromagnetic sheet is embedded and installed on the inner end wall of the movable mold sleeve. Adding the electromagnetic sheet and the magnetic attraction layer is beneficial to improving the stability of the connection between the fixed mold sleeve and the movable mold sleeve after the mold is joined.

[0012] Furthermore, the outer diameter of the mold core is consistent with the inner diameter of the hollow mold sleeve, and a pair of injection cavities are connected to form an injection mold groove with the mold core.

[0013] Furthermore, after the hollow mold sleeve is embedded in the mold groove, a docking space is reserved between its top and the top of the mold groove, and a sealing gasket matching the docking space is fixedly sleeved on the outer end wall of the mold core.

[0014] Furthermore, the pushing structure includes a limiting sleeve embedded and installed at the outer end of the injection cavity, and a pushing cone slidably installed inside the injection cavity.

[0015] Optionally, a conical cavity which is narrow inside and wide outside is formed inside the limiting sleeve, and a conical docking portion matching the conical cavity is formed at the outer end of the pushing cone. The outer ends of the limiting sleeve and the conical docking portion are both flush with the outer end wall of the mold core.

[0016] Optionally, electromagnetic rings are embedded and installed in the inner end wall of the injection cavity and the inside of the limit sleeve. The push cone is initially located at the injection cavity inside the injection tube. During the injection operation, the electromagnetic ring at the inner end wall of the injection cavity is started, and the push cone is limited to the inside of the injection cavity. The flowing rubber material is injected into the injection cavity through the injection tube and the injection cavity. After the injection work is completed, the electromagnetic ring at the limit sleeve is started, and the electromagnetic ring on the inner end wall of the injection cavity is closed. The push cone moves toward the side of the limit sleeve until its conical docking portion is tightly fitted with the limit sleeve, thereby pushing the excess flowing rubber material in the injection cavity into the injection cavity.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) This scheme is to set up a hollow mold sleeve and a mold core that are nested inside and outside each other and can move up and down. Multiple injection mold grooves are formed between the mold core and multiple pairs of injection cavities. Multiple injection cavities that are connected to each other are opened on the end wall of the mold core along the spiral direction. The adjacent injection cavities are staggered up and down and left and right. Through multiple groups of injection pipes and injection cavity matching structures, the flowing rubber material is simultaneously injected into the multiple injection mold grooves. After the injection work is completed, the electromagnetic ring at the limit sleeve is started, and the push cone moves toward one side of the limit sleeve and fits tightly with it. On the one hand, the excess flowing rubber material in the injection cavity is pushed into the injection cavity. On the other hand, the injection mold groove and the injection cavity are free of gaps. After the injection work is completed, the seal formed in each injection mold groove is an independent individual without branches.

[0019] (2) The hollow mold sleeve in this scheme is composed of a fixed mold sleeve and a movable mold sleeve that are symmetrically arranged front and back. The two molds are closed and opened by a pushing structure. During the injection molding process, the closed hollow mold sleeve is pushed into the mold groove, and then the mold core is pressed down into the hollow mold sleeve to perform the injection molding process. After the injection molding process is completed, an independent individual non-branched seal is formed in each injection mold groove. At this time, the hollow mold sleeve is driven downward, and then the pushing structure is used to push multiple groups of movable mold sleeves outward, so that half of the seals in the injection mold groove are exposed, and then the rotating column is driven to rotate the fixed mold sleeve 90 degrees. Multiple seals are flipped to one side of the blanking port and collectively demolded under the action of gravity. No manual demolding is required, no damage is caused to the seals, and the demolding efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention before mold closing;

[0021] Figure 2 It is a structural schematic diagram of the joint between the lower mold and multiple sets of hollow mold sleeves of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the movable mold sleeve and the fixed mold sleeve on the hollow mold sleeve of the present invention when they are separated;

[0023] Figure 4 It is a structural schematic diagram of the lower mold of the present invention;

[0024] Figure 5 The structure of the present invention after the lower mold and the middle mold are molded together Figure 1 ;

[0025] Figure 6 The structure of the present invention after the lower mold and the middle mold are molded together Figure 2 ;

[0026] Figure 7 It is a partial cross-sectional view of the present invention after overall mold closing;

[0027] Figure 8 It is a structural schematic diagram of the mold core of the present invention;

[0028] Fig. 9 It is a partial cross-sectional view of the joint between the mold core and the hollow mold sleeve of the present invention;

[0029] Fig.10 It is an overall cross-sectional view of the joint between the mold core and the hollow mold sleeve of the present invention;

[0030] Fig.11 It is an overall cross-sectional view of the joint between the mold core and the hollow mold sleeve when the push cone is pushed toward one side of the limiting sleeve of the present invention;

[0031] Fig.12 It is a schematic diagram of the overall structure of the present invention when the seal body is demoulded;

[0032] Fig.13 It is a schematic structural diagram of the lower mold of the present invention when the movable mold sleeve is pushed outward to expose the sealing body;

[0033] Fig.14 It is a schematic structural diagram of the lower mold when the fixed mold sleeve is turned downward for demoulding according to the present invention;

[0034] Fig.15 It is a top view of the lower mold when the fixed mold sleeve is turned downward for demoulding.

[0035] Description of the numbers in the figure:

[0036] 1. Upper mold; 2. Middle mold; 201. Clamping groove; 3. Lower mold; 301. Blanking port; 302. Slide; 4. Lifting plate; 5. Hollow mold sleeve; 51. Fixed mold sleeve; 52. Moving mold sleeve; 53. Injection cavity; 54. Slider; 6. Rotating column; 7. Mold core; 701. Limit sleeve; 702. Injection cavity; 8. Armature rod; 9. Push rod; 10. Electric push rod; 11. Injection tube; 12. Heating sleeve; 13. Push cone; 14. Sealing pad; 15. Sealing element. DETAILED DESCRIPTION

[0037] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0038] Example 1: The present invention discloses a molding die for processing a rubber seal. Figure 1 , including an upper mold 1, a middle mold 2 and a lower mold 3. The upper mold 1 and the lower mold 3 move up and down relative to the fixed middle mold 2. The end wall of the middle mold 2 is provided with multiple groups of mold closing grooves 201 distributed in an array and penetrating up and down. The left and right ends of the lower mold 3 are fixedly connected with lifting plates 4. Both sides of the bottom of the middle mold 2 are fixed with support plates. Both sides of the upper end of the support plate are fixedly connected to the upper mold 1 through electric push cylinders. The left and right end walls of the support plate are embedded with electric guide rails for lifting and lowering the lifting plate 4, so that the upper mold 1 and the lower mold 3 can move up and down in the vertical direction relative to the upper mold 1 to complete the mold closing and opening operations.

[0039] See also Figure 2A plurality of rotating columns 6 are rotatably installed between the opposite end walls of the lifting plate 4, and a plurality of hollow mold sleeves 5 matching the mold groove 201 are installed on each rotating column 6. The hollow mold sleeve 5 includes a fixed mold sleeve 51 and a movable mold sleeve 52 symmetrically distributed front and back. A plurality of injection cavities 53 distributed up and down are opened on the inner hole walls of the fixed mold sleeve 51 and the movable mold sleeve 52.

[0040] See also Figure 5-Figure 10 , a plurality of sets of mold cores 7 corresponding to the positions of the mold grooves 201 are inserted through the end wall of the upper mold 1. After the fixed mold sleeve 51 and the movable mold sleeve 52 are molded, the hollow mold sleeve 5 is upwardly embedded in the mold groove 201, and a docking space is reserved between its top and the top of the mold groove 201. The bottom end of the mold core 7 is inserted in the hollow mold sleeve 5, and a sealing gasket 14 matching the docking space is fixedly sleeved on the outer end wall of the mold core 7. The outer diameter of the mold core 7 is consistent with the inner hole diameter of the hollow mold sleeve 5. After a pair of injection cavities 53 are docked, they form an injection mold groove with the mold core 7;

[0041] A plurality of injection cavities 702 corresponding to the positions of the injection cavities 53 are opened on the end wall of the mold core 7 along the spiral direction upward, and the plurality of injection cavities 702 are connected one by one with the plurality of injection cavities 53. A plurality of injection tubes 11 connected one by one with the top ends of the injection cavities 702 are annularly embedded inside the mold core 7. A heating sleeve 12 sleeved on the outside of the injection tube 11 is also installed inside the mold core 7. The plurality of injection cavities 702 connected with the plurality of 501 are opened on the end wall of the mold core 7 along the spiral direction, and the adjacent injection cavities 702 are staggered up and down and left and right, and the plurality of upper and lower injection mold grooves are not connected to each other. The flowing rubber material is synchronously injected into the plurality of injection mold grooves through the matching structures of the plurality of injection tubes 11 and the injection cavities 702.

[0042] See also Figure 9-11 Each injection cavity 702 is embedded with a pusher structure, which includes a limit sleeve 701 embedded at the outer end of the injection cavity 702 and a pusher cone 13 slidably installed inside the injection cavity 702. A conical cavity with a narrow inner side and a wide outer side is provided inside the limit sleeve 701. A conical docking portion matching the conical cavity is provided at the outer end of the pusher cone 13. The outer ends of the limit sleeve 701 and the conical docking portion are both flush with the outer end wall of the mold core 7.

[0043] Electromagnetic rings are embedded and installed on the inner end wall of the injection cavity 702 and the inside of the limiting sleeve 701. The push cone 13 is initially located at the injection cavity 702 inside the injection tube 11. During the injection operation, the electromagnetic ring at the inner end wall of the injection cavity 702 is started, and the push cone 13 is limited to the inside of the injection cavity 702, and the flowing rubber material is injected into the injection cavity 53 through the injection tube 11 and the injection cavity 702. After the injection operation is completed, the electromagnetic ring at the limiting sleeve 701 is started, and the electromagnetic ring at the inner end wall of the injection cavity 702 is closed. The push cone 13 moves toward the side of the limiting sleeve 701 until its conical docking portion is tightly fitted with the limiting sleeve 701. On the one hand, the excess flowing rubber material in the injection cavity 702 is pushed into the injection cavity 53. On the other hand, the conical docking portions of multiple push cones 13 form a whole with the outer end wall of the mold core 7, so that the upper and lower multiple injection mold grooves are isolated from each other and there is no gap with the injection cavity 702.

[0044] After the injection molding work is completed, please refer to Fig.12 The seal 15 formed in each injection mold groove is an independent individual without branches, and can be demolded directly after molding. It should be added that the addition of a heating sleeve 12 is beneficial to heating and insulating the rubber material flowing through the injection pipe 11. In addition, a cooling pipe can be added to the outside of the mold groove. During the molding process, the cooling pipe is used to cool the molded seal 15 in the hollow mold sleeve 5.

[0045] Embodiment 2: Based on Embodiment 1, this embodiment further optimizes the structure of the hollow mold sleeve 5 to facilitate subsequent quick demoulding, specifically:

[0046] See also Figure 2-Figure 4 , multiple groups of fixed die sleeves 51 distributed front and back are respectively fixed on multiple rotating columns 6, and multiple groups of movable die sleeves 52 distributed front and back are installed on the front end of the fixed die sleeve 51 through the horizontal driving of the pushing structure. A plurality of blanking openings 301 located below the movable die sleeve 52 are also opened on the end wall of the lower die 3, and a material receiving box is arranged below the lower die 3;

[0047] Slide blocks 54 are fixedly connected to the bottom end walls on both sides of the movable mold sleeve 52, and a slideway 302 is provided on the upper end wall of the lower mold 3, which is connected to the bottom end of the fixed mold sleeve 51 and extends outward. The bottom end of the slide block 54 is slidably installed on the slideway 302, and the pushing structure includes an arm 8 that passes through and is fixedly connected to multiple slide blocks 54 arranged in the front and rear directions. The front ends of the multiple arm 8 are commonly fixedly connected to a pushing rod 9, and both sides of the upper end of the lower mold 3 are fixedly connected to electric push rods 10 whose telescopic ends are connected to the ends of the pushing rods 9. The driving structure drives multiple groups of movable mold sleeves 52 to slide in the horizontal direction, thereby realizing the mold closing and mold opening between the fixed mold sleeve 51 and the movable mold sleeve 52.

[0048] After the injection molding work is completed, please refer to Figure 12-Figure 15An independent and branchless seal 15 is formed in each injection mold groove. At this time, the hollow mold sleeve 5 is driven downward, and the pushing structure is used to push multiple groups of movable mold sleeves 52 outward, so that half of the seal 15 formed in the injection mold groove is exposed, and then the rotating column 6 is driven to rotate the fixed mold sleeve 51 by ninety degrees. Multiple seals 15 are flipped to the side of the blanking port 301 and are collectively demolded into the receiving box under the action of gravity. There is no need for manual demolding, which does not cause damage to the seal 15 and improves the demolding efficiency.

[0049] Furthermore, it should be supplemented that an electromagnetic sheet is embedded and installed on the inner end wall of the fixed mold sleeve 51 close to the movable mold sleeve 52, and a magnetic attraction layer that is magnetically attracted to the electromagnetic sheet is embedded and installed on the inner end wall of the movable mold sleeve 52. Adding the electromagnetic sheet and the magnetic attraction layer is beneficial to improving the stability of the connection between the fixed mold sleeve 51 and the movable mold sleeve 52 after the mold is engaged.

[0050] In summary, the present invention is to provide a hollow mold sleeve 5 and a mold core 7 which are mutually nested and can both move up and down. The hollow mold sleeve 5 is composed of a fixed mold sleeve 51 and a movable mold sleeve 52 which are symmetrically arranged front and back. The two molds are closed by a pushing structure. During the injection molding, the closed hollow mold sleeve 5 is pushed into the mold closing groove 201, and then the mold core 7 is pressed down into the hollow mold sleeve 5. Multiple injection mold grooves are formed between the mold core 7 and multiple pairs of injection cavities 53. The flowing rubber material is synchronously injected into the multiple injection cavities 53 through the cooperation structure of multiple groups of injection pipes 11 and injection cavities 702.

[0051] After the injection work is completed, the electromagnetic ring at the limit sleeve 701 is started, and the push cone 13 moves toward the side of the limit sleeve 701 and fits closely with it, pushing the excess flowing rubber material in the injection cavity 702 into the injection cavity 53. The upper and lower multiple injection mold grooves are isolated from each other and have no gap with the injection cavity 702. After the injection work is completed, the seal 15 formed in each injection mold groove is an independent individual without branches;

[0052] After molding and cooling, the mold core 7 and the hollow mold sleeve 5 are driven up and down to separate from each other, and then the pushing structure is used to push multiple groups of movable mold sleeves 52 outward, so that half of the seal 15 formed in the injection mold groove is exposed, and then the rotating column 6 is driven to rotate the fixed mold sleeve 51 ninety degrees, and multiple seals 15 are flipped to the side of the blanking port 301 and collectively demolded under the action of gravity.

[0053] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A molding die for processing a rubber seal, comprising an upper die (1), a middle die (2) and a lower die (3), wherein the upper die (1) and the lower die (3) move up and down relative to the middle die (2) which is fixedly installed, and characterized in that: The end wall of the middle mold (2) is provided with a plurality of array-distributed and vertically penetrating mold grooves (201); the left and right ends of the lower mold (3) are fixedly connected with lifting plates (4); a plurality of rotating columns (6) are rotatably mounted between the relative end walls of the lifting plates (4); each rotating column (6) is provided with a plurality of hollow mold sleeves (5) matching the mold grooves (201); the hollow mold sleeves (5) include a fixed mold sleeve (51) and a movable mold sleeve (52) symmetrically distributed front and back; the inner hole walls of the fixed mold sleeve (51) and the movable mold sleeve (52) are provided with a plurality of injection cavities (53) distributed up and down; the fixed mold sleeve (51) is fixed on the rotating columns (6); the plurality of movable mold sleeves (52) distributed front and back are installed on the front end of the fixed mold sleeve (51) by horizontal driving of a pushing structure; the lower mold (3) is provided with a plurality of blanking openings (301) located below the movable mold sleeve (52); The upper mold (1) is penetrated by a plurality of mold cores (7) corresponding to the positions of the hollow mold sleeve (5); the end wall of the mold core (7) is provided with a plurality of injection cavities (702) connected one by one with the injection cavities (53) in a spiral direction upward; a plurality of injection tubes (11) connected one by one with the top ends of the injection cavities (702) are annularly embedded inside the mold core (7); each of the injection cavities (702) is embedded with a pusher structure; The pushing structure comprises a limiting sleeve (701) embedded and installed at the outer end of the injection cavity (702), and a pushing cone (13) slidably installed inside the injection cavity (702); a conical cavity with a narrow inner side and a wide outer side is provided inside the limiting sleeve (701); a conical docking portion matching the conical cavity is provided at the outer end of the pushing cone (13); the outer ends of the limiting sleeve (701) and the conical docking portion are both arranged flush with the outer end wall of the mold core (7); an electromagnetic ring is embedded and installed on the inner end wall of the injection cavity (702) and inside the limiting sleeve (701); and the pushing cone (13) is located at the injection cavity (702) on the inner side of the injection tube (11) in an initial state.

2. The rubber seal processing molding die according to claim 1, characterized in that: Support plates are fixed on both sides of the bottom end of the middle mold (2), and both sides of the upper end of the support plate are fixedly connected to the upper mold (1) through electric push cylinders. The left and right end walls of the support plate are embedded with electric guide rails for driving the lifting plate (4) to rise and fall.

3. The rubber seal processing molding die according to claim 1, characterized in that: Slide blocks (54) are fixedly connected to the bottom end walls on both sides of the movable mold sleeve (52), and a slideway (302) is provided on the upper end wall of the lower mold (3) and is connected to the bottom end of the fixed mold sleeve (51) and extends outward. The bottom end of the slide block (54) is slidably mounted on the slideway (302).

4. The rubber seal processing molding die according to claim 3, characterized in that: The pushing structure comprises an arm (8) which passes through and is fixedly connected to a plurality of slide blocks (54) arranged in the front-rear direction, the front ends of the plurality of arm (8) being fixedly connected to a pushing rod (9), and both sides of the upper end of the lower mold (3) being fixedly connected to electric push rods (10) whose telescopic ends are connected to the end walls of the pushing rods (9).

5. The rubber seal processing molding die according to claim 4, characterized in that: An electromagnetic sheet is embedded and installed on the inner end wall of the fixed mold sleeve (51) close to the movable mold sleeve (52), and a magnetic attraction layer that is magnetically attracted to the electromagnetic sheet is embedded and installed on the inner end wall of the movable mold sleeve (52).

6. The rubber seal processing molding die according to claim 1, characterized in that: The outer diameter of the mold core (7) is consistent with the inner diameter of the hollow mold sleeve (5), and a pair of injection cavities (53) are connected to form an injection mold groove with the mold core (7).

7. The rubber seal processing molding die according to claim 1, characterized in that: After the hollow mold sleeve (5) is embedded in the mold groove (201), a docking space is reserved between its top end and the top of the mold groove (201), and a sealing gasket (14) matching the docking space is fixedly sleeved on the outer end wall of the mold core (7).

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