Forming mold for producing ethylene propylene diene monomer

Abstract

The invention discloses a forming die for ethylene propylene diene monomer production, and relates to the technical field of ethylene propylene diene monomer production, the forming die comprises a bottom die, the top surface of the bottom die is fixedly connected with a female die, the top surface of the female die is provided with a cavity and a guide groove, a first piston rod is slidably sleeved in the guide groove, the top surface of the first piston rod is fixedly connected with a male die, and the male die is fixedly connected with a second piston rod. The injection mold has the advantages that mold closing self-inspection can be achieved, injection molding during incomplete mold closing is avoided, splashing of molten materials is prevented, the risk of personnel injury is reduced, raw material waste is avoided, cost loss is greatly reduced, meanwhile, an injection molding runner can be automatically closed, and the service life of the injection mold is prolonged. Natural connection of all steps of the mold can be completed without participation of control elements, the use environment of the mold is compounded, meanwhile, the probability of mold damage is reduced, the injection molding ring can be heated, temperature reduction of the injection molding ring during mold opening is avoided, the injection molding ring is not prone to being blocked, influence on work of an injection molding machine is avoided, and then material returning and mold dredging are avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of production of ethylene-propylene-diene rubber, and particularly relates to a forming die for production of ethylene-propylene-diene rubber. BACKGROUND

[0002] The production forming process of the ethylene-propylene-diene rubber mainly comprises stages of plasticizing, mixing, extruding and vulcanizing, the plasticizing is a process of making the rubber macromolecule undergo chain breaking and oxidative cleavage through mechanical action, so that the raw rubber is converted from a tough elastic state to a soft and plastic state, the mixing is an important process in production of the ethylene-propylene-diene rubber product, which makes various mixing agents completely and uniformly dispersed in the raw rubber, and directly affects the product quality, the extruding is to extrude the mixed rubber through an extruder and form ethylene-propylene-diene rubber particles, and the forming of the ethylene-propylene-diene rubber is generally completed by an injection molding machine.

[0003] The production forming process of the ethylene-propylene-diene rubber is complex and has a high cost, and therefore the loss of raw materials needs to be specially considered in the production forming process.

[0004] According to the search, the Chinese patent application CN219819952U discloses a processing die for ethylene-propylene-diene rubber sealing gaskets, which has the advantages of being capable of being replaced according to production requirements, having good damping effect and high production efficiency, but the injection flow channel cannot be automatically closed when the die is opened, and the die does not have a self-checking mechanism for whether the die is completely closed, if the die is not completely closed and injection is performed, not only is there a risk of splashing of molten material, but also a large amount of raw materials is wasted, the cost loss is greatly increased, and meanwhile, the injection ring of the injection die is easy to be blocked, the blocking reason is mainly that the material in the injection ring is cooled, and therefore the temperature of the injection ring needs to be maintained during injection molding. SUMMARY

[0005] The application aims to provide a forming die for production of ethylene-propylene-diene rubber.

[0006] In order to solve the problems in the background, the application provides the following technical scheme: a forming die for production of ethylene-propylene-diene rubber, comprising a bottom die, a female die is fixedly connected to the top surface of the bottom die, a cavity and a guide groove are formed in the top surface of the female die, a first piston rod is slidably sleeved in the guide groove, a male die is fixedly connected to the top surface of the first piston rod, a top die is fixedly connected to the top surface of the male die, an injection flow channel is formed through the central axes of the top die and the male die, an embedding groove is formed in the inner surface of the injection flow channel, a closed ring groove is formed in the bottom wall of the embedding groove, a first closed cavity is formed in the side wall of the embedding groove, one end of a first gas guide pipe is communicated with the bottom surface of the closed ring groove, and the other end of the first gas guide pipe penetrates the bottom surface of the first piston rod. The closed ring groove is sleeved with a ring-shaped piston, the top surface of the ring-shaped piston is fixedly connected with a top ring, one end of a branch pipe communicated with the outer surface of the first air duct, the other end of the branch pipe is communicated with a fixed cylinder, one end of a second piston rod is sleeved in the fixed cylinder, the other end of the second piston rod is fixedly connected with a sliding block, the end of the fixed cylinder and the bottom end of the closed ring groove are communicated with a connecting pipe, one end of a pull rope is fixedly connected with the side wall of the sliding block, the other end of the pull rope is fixedly connected with a rectangular piston, the outer surface of the pull rope is slidably connected with a guide wheel, the side wall of the rectangular piston is fixedly connected with a baffle, and a sliding groove is arranged in the male die.

[0007] As a further scheme of the present application: the guide groove and the first piston rod are provided with four, and the four guide grooves and the four first piston rods are respectively located at the four corners of the female die, and the guide groove and the first piston rod are one-to-one corresponding.

[0008] As a further scheme of the present application: the closed ring groove is communicated with the embedding groove, the first closed cavity is communicated with the embedding groove, the first air duct is one-to-one corresponding with the first piston rod, and a plurality of first air ducts are uniformly distributed about the central axis of the closed ring groove.

[0009] As a further scheme of the present application: the top ring extends into the embedding groove, the rectangular piston is sleeved with the first closed cavity, the baffle is embeddedly sleeved with the embedding groove, and the inner surface of the top ring is tightly attached to the inner surface of the closed ring groove.

[0010] As a further scheme of the present application: the guide wheel is rotatably sleeved with the male die, the sliding block is slidably sleeved with the sliding groove, a one-way valve is arranged between the connecting pipe and the fixed cylinder, the second piston rod drives the rectangular piston and the baffle to move through the sliding block and the pull rope, and the branch pipe is fixedly sleeved with the male die.

[0011] As a further scheme of the present application: a second closed cavity is arranged in the top die, a pressure rod is slidably sleeved with the top wall of the second closed cavity, a circular piston is fixedly connected with the bottom surface of the pressure rod, one end of a second air duct is communicated with the bottom surface of the second closed cavity, the other end of the second air duct is communicated with the end of the first closed cavity, a heating block is installed in the baffle, a first contact head is fixedly connected with the input end of the heating block, a second contact head is connected with the top surface of the first contact head, a wire is fixedly connected with the top surface of the second contact head, an injection molding ring is sleeved with the top end of the injection molding flow channel, a clamping block is clamped with the outer surface of the injection molding ring, and a return spring is fixedly connected between the end surface of the clamping block and the top die.

[0012] As a further scheme of the present application: the bottom end of the second air duct is close to the sliding block, the top surface of the pressure rod is in contact with the end surface of the injection molding ring, and the clamping block is slidably sleeved with the top die.

[0013] As a further scheme of the present application: the first contact head extends to the top surface of the baffle, the second contact head is fixedly sleeved with the side wall of the embedding groove, and the wire extends to the top die.

[0014] By adopting the technical scheme, compared with the prior art, the present application has the beneficial effects that: 1、The first piston rod end face gradually compresses the air in the guide groove, so that the compressed air flows into the closed ring groove through the first air guide pipe on the first piston rod, the air pressure at the bottom end of the closed ring groove rises, the annular piston in the closed ring groove rises, the top ring on the annular piston rises, and the top ring gradually seals the embedding groove, and further, as the compressed air flows into the first air guide pipe, the branch pipe on the first air guide pipe guides part of the compressed air into the fixed cylinder, the air pressure in the fixed cylinder rises and pushes the second piston rod to translate, the slider on the second piston rod pulls one end of the pull rope, the pull rope pulls the rectangular piston and the baffle downward under the guidance of the guide wheel, the baffle gradually shrinks into the first closed cavity, and the purpose of opening the injection flow channel is achieved, when the concave die and the convex die are completely closed, the first piston rod completely enters the guide groove, the injection flow channel can be completely opened, at the same time, the top ring completely seals the embedding groove, if the above conditions are not met, the baffle cannot be completely shrunk, the injection flow channel cannot be smooth, and the injection of the ethylene propylene diene rubber cannot be carried out, the purpose of mold closing self-checking is achieved, the injection when the mold is not completely closed is avoided, not only the spatter of the molten material is prevented, the risk of personnel injury is reduced, but also the waste of raw materials is avoided, and the cost loss is greatly reduced.

[0015] 2、The first piston rod on the convex die gradually separates from the guide groove, so that the air pressure in the guide groove decreases, thereby the guide groove absorbs the air in the closed ring groove and the fixed cylinder through the first air guide pipe and the branch pipe, the above process is repeated in reverse, the top ring and the second piston rod are reset, at this time, the restraint of the rectangular piston by the pull rope is released, and the translation of the rectangular piston in the initial stage will compress the air in the first closed cavity, so that the rectangular piston is always extruded by the compressed air, at this time, the rectangular piston released from the restraint will reset under the rebound of the compressed air, so that the baffle on the rectangular piston reseals the injection flow channel, the purpose of automatically closing the injection flow channel is achieved, the mold can naturally connect each step without the participation of control elements, the use environment of the composite mold is achieved, and the probability of mold damage is reduced.

[0016] 3、The application compresses the air in the second closed cavity through the circular piston, so that the compressed cavity enters the first closed cavity through the second air guide pipe, the air pressure in the first closed cavity is increased, the rectangular piston is continuously extruded, the sealing property of the baffle is ensured, the position of the baffle can be kept stable all the time when the sealing property of the baffle is kept, the first contact head and the second contact head on the baffle keep stable connection, the lead wire in the male die forms stable passage with the heating block, the heating block stably heats the injection molding ring, the temperature of the injection molding ring is prevented from dropping when the mold is opened, the injection molding ring is prevented from being easily blocked, the work of the injection molding machine is prevented from being affected, and then the material is prevented from being returned and the mold is prevented from being dredged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the three- component ethylene propylene rubber production forming die of the application; Figure 2 It is a half-section schematic diagram of the male die structure in the embodiment of the application; Figure 3 It is a half-section schematic diagram of the male die structure in the embodiment of the application; Figure 2 It is an enlarged view of the structure of part A; Figure 4 It is a schematic diagram of the structure of the first air guide pipe in the embodiment of the application; Figure 5 It is a half-section schematic diagram of the male die structure in the embodiment of the application; Figure 4 It is an enlarged view of the structure of part B; Figure 6 It is a half-section schematic diagram of the closed ring groove structure in the embodiment of the application; Figure 7 It is a schematic diagram of the structure of the clamping block in the embodiment of the application; Figure 8 It is a sectional view of the fixed cylinder structure in the embodiment of the application; Figure 9 It is a sectional view of the baffle structure in the embodiment of the application.

[0018] In the figure: 1, bottom die; 2, female die; 3, cavity; 4, guide groove; 5, first piston rod; 6, male die; 7, top die; 8, injection molding runner; 9, embedding groove; 10, closed ring groove; 11, first closed cavity; 12, first air guide pipe; 13, annular piston; 14, top ring; 15, branch pipe; 16, fixed cylinder; 17, second piston rod; 18, sliding block; 19, connecting pipe; 20, pull rope; 21, guide wheel; 22, rectangular piston; 23, baffle; 24, second closed cavity; 25, pressing rod; 26, circular piston; 27, second air guide pipe; 28, injection molding ring; 29, sliding groove; 30, clamping block; 31, return spring; 32, heating block; 33, first contact head; 34, second contact head; 35, lead wire. DETAILED DESCRIPTION

[0019] The specific embodiments of the present application will be further described with reference to the drawings. It should be noted that the description of these embodiments is intended for the purpose of helping understand the present application, and is not intended to limit the present application. Furthermore, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0020] Embodiment 1 Please refer to Figures 2-6 and Figure 8 , the present application provides a technical solution: a forming mold for production of ethylene-propylene-diene rubber, the closed annular groove 10 is slidingly sleeved with an annular piston 13, the top surface of the annular piston 13 is fixedly connected with a top ring 14, one end of the branch pipe 15 is communicated with the outer surface of the first gas guide pipe 12, the other end of the branch pipe 15 is communicated with a fixed cylinder 16, one end of the second piston rod 17 is slidingly sleeved in the fixed cylinder 16, the other end of the second piston rod 17 is fixedly connected with a sliding block 18, the end of the fixed cylinder 16 is communicated with the bottom end of the closed annular groove 10 through a connecting pipe 19, one end of the pull rope 20 is fixedly connected on the side wall of the sliding block 18, the other end of the pull rope 20 is fixedly connected with a rectangular piston 22, and the outer surface of the pull rope 20 is slidingly connected with a guide wheel 21, the side wall of the rectangular piston 22 is fixedly connected with a baffle 23, and the slide groove 29 is arranged in the male die 6.

[0021] Please refer to Figure 3 and Figure 6 , the top ring 14 extends into the embedding groove 9, the rectangular piston 22 is slidingly sleeved with the first closed cavity 11, the baffle 23 is embeddedly sleeved with the embedding groove 9, and the inner surface of the top ring 14 is tightly attached to the inner surface of the closed annular groove 10.

[0022] Please refer to Figure 3 and Figure 5 , the guide wheel 21 is rotatably sleeved with the male die 6, the sliding block 18 is slidingly sleeved with the slide groove 29, the connecting pipe 19 is provided with a one-way valve between the fixed cylinder 16, the second piston rod 17 drives the rectangular piston 22 and the baffle 23 to move through the sliding block 18 and the pull rope 20, and the branch pipe 15 is fixedly sleeved with the male die 6.

[0023] Specifically, in the process of forming the ethylene-propylene-diene rubber, the mixed ethylene-propylene-diene rubber particles are put into an injection molding machine, and the bottom die 1 and the concave die 2 are moved, so that the guide groove 4 on the concave die 2 is matched with the first piston rod 5 on the convex die 6, and the first piston rod 5 is gradually inserted into the guide groove 4. During this process, as the first piston rod 5 moves, the end face of the first piston rod 5 gradually compresses the air in the guide groove 4, so that the compressed air flows into the closed annular groove 10 through the first air pipe 12 on the first piston rod 5, so that the air pressure at the bottom end of the closed annular groove 10 rises, thereby causing the annular piston 13 in the closed annular groove 10 to rise, causing the top ring 14 on the annular piston 13 to rise, and further causing the top ring 14 to gradually close the embedded groove 9. It needs to be further explained that as the compressed air flows into the first air pipe 12, the branch pipe 15 on the first air pipe 12 will guide a part of the compressed air into the fixed cylinder 16, so that the air pressure in the fixed cylinder 16 rises and pushes the second piston rod 17 to translate, so that the sliding block 18 on the second piston rod 17 pulls one end of the pull rope 20, causing the pull rope 20 to pull the rectangular piston 22 and the baffle 23 in the direction of the guide wheel 21, causing the baffle 23 to gradually shrink into the first closed cavity 11, achieving the purpose of opening the injection runner 8. When the concave die 2 and the convex die 6 are completely closed, the first piston rod 5 completely enters the guide groove 4, and the injection runner 8 can be completely opened. At the same time, the top ring 14 completely seals the embedded groove 9. If the above conditions are not met, the baffle 23 cannot be completely retracted, and the injection runner 8 cannot be unobstructed, so that the injection molding of the ethylene-propylene-diene rubber cannot be carried out, achieving the purpose of mold self-checking, avoiding injection molding when the mold is not completely closed, not only preventing the splashing of molten material and reducing the risk of personnel injury, but also avoiding the waste of raw materials and greatly reducing the loss of cost.

[0024] Example 2 Please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 6 , the present application provides a technical solution: a forming mold for ethylene-propylene-diene rubber production, comprising a bottom die 1, the top surface of the bottom die 1 is fixedly connected with a concave die 2, the top surface of the concave die 2 is provided with a cavity 3 and a guide groove 4, the first piston rod 5 is slidably connected in the guide groove 4, the top surface of the first piston rod 5 is fixedly connected with a convex die 6, the top surface of the convex die 6 is fixedly connected with a top die 7, the center axis of the top die 7 and the convex die 6 is provided with an injection runner 8, the inner surface of the injection runner 8 is provided with an embedded groove 9, the bottom wall of the embedded groove 9 is provided with a closed annular groove 10, and the side wall of the embedded groove 9 is provided with a first closed cavity 11, one end of the closed annular groove 10 is communicated with the first air pipe 12, and the other end of the first air pipe 12 penetrates the bottom surface of the first piston rod 5.

[0025] Please refer to Figure 1 and Figure 2The four guide grooves 4 and the four first piston rods 5 are located at the four corners of the female die 2 and correspond to each other.

[0026] Please refer to Figure 4 and Figure 6 The closed ring groove 10 is communicated with the embedding groove 9, the first closed cavity 11 is communicated with the embedding groove 9, the first air guide pipe 12 corresponds to the first piston rod 5, and a plurality of first air guide pipes 12 are uniformly distributed about the central axis of the closed ring groove 10.

[0027] Specifically, in the process of opening the female die 2 and the male die 6, the first piston rod 5 on the male die 6 gradually separates from the guide groove 4, so that the air pressure in the guide groove 4 decreases, thereby causing the guide groove 4 to absorb the air in the closed ring groove 10 and the fixed cylinder 16 through the first air guide pipe 12 and the branch pipe 15, and the reverse repeating of the above process causes the top ring 14 and the second piston rod 17 to reset. At this time, the restraint of the rectangular piston 22 by the pull rope 20 is released, and the initial translation of the rectangular piston 22 will compress the air in the first closed cavity 11, so that the rectangular piston 22 is always extruded by the compressed air. At this time, the rectangular piston 22 released from the restraint will reset under the rebound of the compressed air, so that the baffle 23 on the rectangular piston 22 reseals the injection molding flow channel 8, achieving the purpose of automatically closing the injection molding flow channel 8, so that the mold can naturally connect each step without the participation of control elements, the use environment of the composite mold is reduced, and the probability of mold damage is reduced.

[0028] Embodiment 3 Please refer to Figure 3 , Figure 6 , Figure 7 and Figure 9 The present application provides a technical solution: a forming mold for producing ethylene propylene diene rubber, a second closed cavity 24 is formed in the top die 7, a pressure rod 25 is slidably connected to the top wall of the second closed cavity 24, a circular piston 26 is fixedly connected to the bottom surface of the pressure rod 25, one end of a second air guide pipe 27 is communicated with the bottom surface of the second closed cavity 24, the other end of the second air guide pipe 27 is communicated with the end of the first closed cavity 11, a heating block 32 is installed in the baffle 23, a first contact head 33 is fixedly connected to the input end of the heating block 32, a second contact head 34 is connected to the top surface of the first contact head 33, a wire 35 is fixedly connected to the top surface of the second contact head 34, an injection molding ring 28 is sleeved on the top end of the injection molding flow channel 8, a clamping block 30 is clamped on the outer surface of the injection molding ring 28, and a reset spring 31 is fixedly connected between the end surface of the clamping block 30 and the top die 7.

[0029] Please refer to Figure 3 and Figure 6 The bottom end of the second air guide pipe 27 is close to the sliding block 18, the top surface of the pressure rod 25 is in contact with the end surface of the injection molding ring 28, and the clamping block 30 is slidably connected with the top die 7.

[0030] Referring to Figure 9 , the first contact head 33 extends out of the top surface of the baffle 23, the second contact head 34 is fixedly sleeved with the side wall of the embedding groove 9, and the lead wire 35 extends out of the top die 7.

[0031] Specifically, in the process of installing the injection molding ring 28, the injection molding ring 28 is placed at the top end of the injection molding flow channel 8, and the injection molding ring 28 is pressed downward at the top end of the pressing rod 25, so that the pressing rod 25 pushes the circular piston 26 to descend, so that the circular piston 26 compresses the air in the second closed cavity 24, so that the compressed cavity enters the first closed cavity 11 through the second air guide pipe 27, so that the air pressure in the first closed cavity 11 is increased, thereby continuously extruding the rectangular piston 22, ensuring the sealing property of the baffle 23, and when the sealing property of the baffle 23 is maintained, the position of the baffle 23 can always be kept stable, so that the first contact head 33 and the second contact head 34 on the baffle 23 are kept stable connection, so that the lead wire 35 in the male die 6 forms a stable passage with the heating block 32, thereby making the heating block 32 stably heat the injection molding ring 28, avoiding the temperature drop of the injection molding ring 28 when the mold is opened, so that the injection molding ring 28 is not easy to be blocked, avoiding affecting the work of the injection molding machine, thereby avoiding material return and dredging the mold.

[0032] The working principle and use process of the present application: when the ethylene propylene rubber needs to be formed, the mixed ethylene propylene rubber particles are put into the injection molding machine, and the bottom die 1 and the concave die 2 are moved, so that the guide groove 4 on the concave die 2 is matched with the first piston rod 5 on the convex die 6, and the first piston rod 5 is gradually inserted into the guide groove 4. During this process, as the first piston rod 5 moves, the end face of the first piston rod 5 gradually compresses the air in the guide groove 4, so that the compressed air flows into the closed ring groove 10 through the first air pipe 12 on the first piston rod 5, so that the air pressure at the bottom end of the closed ring groove 10 rises, thereby making the annular piston 13 in the closed ring groove 10 rise, making the top ring 14 on the annular piston 13 rise, and then making the top ring 14 gradually close the embedded groove 9. It needs to be further explained that as the compressed air flows into the first air pipe 12, the branch pipe 15 on the first air pipe 12 will guide a part of the compressed air into the fixed cylinder 16, so that the air pressure in the fixed cylinder 16 rises and pushes the second piston rod 17 to translate, so that the slider 18 on the second piston rod 17 pulls one end of the pull rope 20, so that the pull rope 20 pulls the rectangular piston 22 and the baffle 23 to translate under the guidance of the guide wheel 21, so that the baffle 23 gradually shrinks into the first closed cavity 11, achieving the purpose of opening the injection flow channel 8. When the concave die 2 and the convex die 6 are completely closed, the first piston rod 5 completely enters the guide groove 4, and the injection flow channel 8 can be completely opened. At the same time, the top ring 14 completely seals the embedded groove 9. If the above conditions are not met, the baffle 23 cannot be completely shrunk, and the injection flow channel 8 cannot be smooth, so that the injection molding of the ethylene propylene rubber cannot be carried out, achieving the purpose of mold closing self-checking, avoiding injection molding when the mold is not completely closed, not only preventing the splashing of molten material and reducing the risk of personnel injury, but also avoiding the waste of raw materials and greatly reducing the loss of cost; When the ethylene propylene rubber injection molding is completed and cooled, the concave die 2 and the convex die 6 are controlled to be opened, so that the first piston rod 5 on the convex die 6 gradually separates from the guide groove 4, so that the air pressure in the guide groove 4 decreases, thereby making the guide groove 4 absorb the air in the closed ring groove 10 and the fixed cylinder 16 through the first air pipe 12 and the branch pipe 15, repeating the above process in reverse, so that the top ring 14 and the second piston rod 17 reset. At this time, the restraint of the pull rope 20 on the rectangular piston 22 is removed, and the initial translation of the rectangular piston 22 will compress the air in the first closed cavity 11, so that the rectangular piston 22 is always extruded by the compressed air. At this time, the rectangular piston 22 that is released from restraint will reset under the rebound of the compressed air, so that the baffle 23 on the rectangular piston 22 reseals the injection flow channel 8, achieving the purpose of automatically closing the injection flow channel 8, so that the mold can complete the natural connection of each step without the participation of control elements, the use environment of the composite mold, and the probability of mold damage is reduced; It needs to be further explained that in the process of installing the injection ring 28, the injection ring 28 is put into the top end of the injection flow channel 8, and the injection ring 28 is pressed down to the top end of the pressure rod 25, so that the pressure rod 25 pushes the circular piston 26 to descend, so that the circular piston 26 compresses the air in the second closed cavity 24, so that the compressed cavity enters the first closed cavity 11 through the second air guide pipe 27, so that the air pressure in the first closed cavity 11 is increased, thereby continuously extruding the rectangular piston 22, ensuring the sealing of the baffle 23; And when the above-mentioned baffle 23 maintains the sealing property, the position of the baffle 23 can always remain stable, so that the first contact head 33 and the second contact head 34 on the baffle 23 remain stable connection, so that the lead wire 35 in the male die 6 forms a stable passage with the heating block 32, and then the heating block 32 stably heats the injection ring 28, avoids the temperature drop of the injection ring 28 when the mold is opened, so that the injection ring 28 is not easy to block, avoids affecting the work of the injection molding machine, and then avoids the material return and the dredging of the mold, and completes the operation.

[0033] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A forming mold for production of a ternary ethylene-propylene rubber, characterized by, The system includes a bottom mold (1), a concave mold (2) fixedly connected to the top surface of the bottom mold (1), a cavity (3) and a guide groove (4) opened on the top surface of the concave mold (2), a first piston rod (5) slidably sleeved in the guide groove (4), a punch (6) fixedly connected to the top surface of the first piston rod (5), a top mold (7) fixedly connected to the top surface of the punch (6), an injection runner (8) passing through the central axis of the top mold (7) and the punch (6), a groove (9) opened on the inner surface of the injection runner (8), a sealed annular groove (10) opened in the bottom wall of the groove (9), and a first sealed cavity (11) opened on the side wall of the groove (9), and a first air guide pipe (12) connected to the bottom surface of the sealed annular groove (10), and the other end of the first air guide pipe (12) passing through the bottom surface of the first piston rod (5); An annular piston (13) is slidably sleeved in the sealed annular groove (10). A top ring (14) is fixedly connected to the top surface of the annular piston (13). One end of a branch pipe (15) is connected to the outer surface of the first air guide pipe (12). The other end of the branch pipe (15) is connected to a fixed cylinder (16). One end of a second piston rod (17) is slidably sleeved in the fixed cylinder (16). A slider (18) is fixedly connected to the other end of the second piston rod (17). A connecting pipe (19) is connected between the end of the fixed cylinder (16) and the bottom end of the sealed annular groove (10). One end of a pull rope (20) is fixedly connected to the side wall of the slider (18). A rectangular piston (22) is fixedly connected to the other end of the pull rope (20). A guide wheel (21) is slidably connected to the outer surface of the pull rope (20). A baffle (23) is fixedly connected to the side wall of the rectangular piston (22). A sliding groove (29) is opened in the punch (6).

2. The shaped mold for producing an ethylene-propylene-diene rubber according to claim 1, characterized by: The guide groove (4) and the first piston rod (5) are each provided with four, and the four guide grooves (4) and the four first piston rods (5) are respectively located at the four corners of the die (2), and the guide grooves (4) and the first piston rods (5) correspond one-to-one.

3. The shaped mold for producing an ethylene-propylene-diene rubber according to claim 1, characterized in that: The sealed annular groove (10) is connected to the groove (9), the first sealed cavity (11) is connected to the groove (9), the first air guide tube (12) corresponds to the first piston rod (5) one by one, and the multiple first air guide tubes (12) are evenly distributed about the central axis of the sealed annular groove (10).

4. The shaped mold for producing an ethylene-propylene-diene rubber according to claim 1, characterized by: The top ring (14) extends into the groove (9), the rectangular piston (22) is slidably sleeved with the first sealed cavity (11), the baffle (23) is fitted into the groove (9), and the inner surface of the top ring (14) is in close contact with the inner surface of the sealed ring groove (10).

5. The shaped mold for producing an ethylene-propylene-diene rubber according to claim 1, characterized by: The guide wheel (21) is rotatably sleeved with the punch (6), the slider (18) is slidably sleeved with the groove (29), a one-way valve is provided between the connecting pipe (19) and the fixed cylinder (16), the second piston rod (17) drives the rectangular piston (22) and the baffle (23) to move through the slider (18) and the pull rope (20), and the branch pipe (15) is fixedly sleeved with the punch (6).

6. The shaped mold for producing an ethylene-propylene-diene rubber according to claim 1, characterized by: The top die (7) is internally provided with a second closed cavity (24), a pressure rod (25) is slidably sleeved on the top wall of the second closed cavity (24), a circular piston (26) is fixedly connected to the bottom surface of the pressure rod (25), one end of a second gas guide pipe (27) is communicated with the bottom surface of the second closed cavity (24), the other end of the second gas guide pipe (27) is communicated with the end portion of the first closed cavity (11), a heating block (32) is installed in the baffle (23), a first contact head (33) is fixedly connected to the input end of the heating block (32), a second contact head (34) is connected to the top surface of the first contact head (33), a wire (35) is fixedly connected to the top surface of the second contact head (34), an injection molding ring (28) is sleeved on the top end of the injection molding flow channel (8), a clamping block (30) is clamped on the outer surface of the injection molding ring (28), and a reset spring (31) is fixedly connected between the end surface of the clamping block (30) and the top die (7).

7. The shaped mold for producing an ethylene-propylene-diene rubber according to claim 6, characterized in that: The bottom end of the second gas guide pipe (27) is close to the sliding block (18), the top surface of the pressure rod (25) is in contact connection with the end surface of the injection molding ring (28), and the clamping block (30) is slidably sleeved with the top die (7).

8. The shaped mold for producing an ethylene-propylene-diene rubber according to claim 6, characterized by: The first contact head (33) extends out of the top surface of the baffle (23), the second contact head (34) is fixedly sleeved with the side wall of the embedded groove (9), and the wire (35) extends out of the top die (7).

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