A molding die for the production of automotive rubber parts

Abstract

The invention discloses a molding die for producing automobile rubber parts, and relates to the technical field of molding dies. The molding die comprises an extrusion tube, wherein a molding mechanism is arranged inside the extrusion tube. By arranging the molding mechanism, a connecting sleeve and a sliding sleeve are pushed out due to the high pressure during high-pressure extrusion inside the extrusion tube. After the connecting sleeve and the sliding sleeve are pushed out, the melted rubber first passes through the inner wall of the extrusion tube, then enters the connecting sleeve, and finally is extruded through one end of the sliding sleeve, thereby extending the transmission stroke of the rubber, and then increasing the cooling efficiency of the rubber, thereby avoiding the problem that the temperature of the rubber strip is not reduced to a suitable temperature due to a short residence time in the connecting sleeve and the sliding sleeve under high-efficiency extrusion work, and the problem of softening and easy deformation after being extruded from the sliding sleeve is avoided. The sliding sleeve is automatically extended to different degrees according to different pressure levels, thereby adaptively completing the cooling effect of the rubber under different pressure levels.

Description

Technical Field

[0001] The invention relates to the technical field of molding dies, in particular to a molding die for producing automobile rubber accessories. Background Art

[0002] Extrusion molding is also called extrusion molding in plastic processing. It is a processing method in which the material passes through the action between the barrel and the screw of the extruder, is heated and plasticized, and is pushed forward by the screw, and continuously passes through the die to form various cross-section products or semi-finished products;

[0003] A rubber extrusion die mouth template described in the patent application with publication number CN105856527A is composed of an upper mouth template and a lower mouth template; a guide cone angle from outside to inside along the extrusion direction is provided at the inlet of the mouth template; a glue storage chamber is provided downstream of the guide cone angle; a die forming cavity is provided downstream of the glue storage chamber, and the end face of the die forming cavity is adapted to the shape of the extruded part. The guide cone angle is composed of semi-conical surfaces at the inlet of the upper mouth template and the lower mouth template. The guide cone angle is larger than the inlet cone angle of the rubber-coated steel cord template. The glue storage chamber is arc-shaped, and is composed of curved surfaces provided on the upper mouth template and the lower mouth template;

[0004] At present, in the production of rubber for automobiles, when the rubber raw materials are hot-melted and then pushed out, under high-load and relatively fast hot-melt extrusion work, the extrusion speed of the re-plasticized rubber after hot-melting increases, and the hot-melt rubber stays in the extrusion tube for a shorter time, while the extruded rubber still has a relatively high temperature. After leaving the extrusion die, it is easy to deform and soften due to the high temperature. In addition, when it is subsequently clamped and transported by the conveyor rollers, the round rubber strip will be slightly flattened and deformed, which is not conducive to the subsequent processing and use of the rubber strip. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a molding die for producing automotive rubber accessories, which achieves the purpose of solving the above-mentioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A molding die for producing automotive rubber parts, comprising an extrusion tube, wherein a molding mechanism is arranged inside the extrusion tube;

[0007] The forming mechanism comprises:

[0008] A sliding sleeve, the sliding sleeve is a hollow columnar structure, one side of the sliding sleeve is fixedly connected with a connecting sleeve, the connecting sleeve is a hollow columnar structure, the hollow diameter of the connecting sleeve is equal to that of the inner wall of the sliding sleeve, and the sliding sleeve is used for the connecting sleeve to be pushed to play a role of horizontal sliding on the inner wall of the extrusion tube;

[0009] A heat sink, wherein the outer wall of the heat sink is fixedly connected to the outer wall of the sliding sleeve, one end of the sliding sleeve is fixedly connected to a rotating disk, one side of the rotating disk is fixedly connected to a spring, one end of the spring is fixedly connected to one side of the extrusion tube, and the heat sink is used to absorb heat from the sliding sleeve and dissipate heat externally;

[0010] When producing rubber for automobiles, the raw materials are put into the rubber extruder, heated and melted at high temperature, pushed into the extrusion tube through the threads inside the extruder, and enter the connecting sleeve and sliding sleeve inside the extrusion tube to be shaped and extruded. While being extruded through the connecting sleeve and sliding sleeve inside the extrusion tube, the raw materials gradually cool down, completing the process of melting, plasticizing and extruding the rubber.

[0011] Preferably, a hollow telescopic rod is fixedly connected to one side of the turntable, and one end of the hollow telescopic rod is fixedly connected to one side of the outer wall of the extrusion tube.

[0012] Preferably, one side of the sliding sleeve is rotatably connected to a threaded rotating block via a bearing, and the threaded rotating block is meshed with a rotating sleeve.

[0013] Preferably, a bearing ring is rotatably connected to the outer wall of the rotating sleeve, a fixing rod is fixedly connected to one side of the bearing ring, and one end of the fixing rod is fixedly connected to one side of the rotating disk.

[0014] Preferably, the outer wall of the rotating sleeve is fixedly connected with fan blades, and the outer wall of the turntable is provided with a fastening mechanism.

[0015] Preferably, the fastening mechanism comprises a circular hole, the circular hole is opened inside the turntable, and the inside of the circular hole is connected to the inside of the hollow telescopic rod.

[0016] Preferably, a connecting pipe is fixedly connected to one side of the turntable, the interior of the circular hole is connected to the interior of the connecting pipe, the outer wall of the rotating sleeve is rotatably connected to a rotating ring, a through hole is opened on the inner wall of the rotating ring, and the interior of the connecting pipe is connected to the interior of the through hole.

[0017] Preferably, an annular air groove is provided on the outer wall of the rotating sleeve, a vertical groove is provided inside the rotating sleeve, the inside of the vertical groove is communicated with the inside of the annular air groove, and the inside of the annular air groove is communicated with the inside of the through hole.

[0018] The present invention provides a molding die for producing automobile rubber parts. It has the following beneficial effects:

[0019] 1. The present invention sets a molding mechanism. Due to the high pressure during high-pressure extrusion inside the extrusion tube, the connecting sleeve and the sliding sleeve are pushed out. After the connecting sleeve and the sliding sleeve are pushed out, the melted rubber first passes through the inner wall of the extrusion tube, then enters the connecting sleeve, and finally is extruded through one end of the sliding sleeve, thereby extending the transmission stroke of the rubber, and then increasing the cooling efficiency of the rubber, avoiding the problem that the temperature of the rubber strip is not reduced to a suitable temperature due to a short residence time in the connecting sleeve and the sliding sleeve under high-efficiency extrusion work, and the softening and easy deformation after being extruded from the sliding sleeve occurs. According to different pressure levels, the sliding sleeve is automatically extended to different degrees, thereby adaptively completing the cooling effect of the rubber under different pressure levels.

[0020] 2. The present invention sets a molding mechanism, so that when the pressure is high and the rubber pushing speed is fast, the sliding sleeve is pushed out farther and the contact area between the heat sink and the air is larger to improve the heat dissipation effect. When the pressure is low and the rubber pushing speed is slow, the sliding sleeve is pushed out a shorter distance and the smaller contact area of ​​the heat sink is used to achieve limited heat dissipation, so as to ensure that even under different pressures, the temperature of the rubber extruded from one end of the sliding sleeve can be kept as stable as possible, reduce the problem of excessively high or too low temperature after rubber extrusion, maintain the stability of rubber extrusion, and avoid the problem of quality affected by different rubber extrusion temperatures.

[0021] 3. The present invention sets a molding mechanism. When the threaded rotating block rotates, the thread on the threaded rotating block will mesh with the rotating sleeve, and drive the rotating sleeve to rotate slowly. Therefore, when the rubber strip passes through the inflatable airbag on the inner wall of the rotating sleeve, the rotating sleeve drives the inflatable airbag to rotate synchronously and slowly, so that the rubber strip can be more evenly contacted and rounded, and the problem of high temperature, softness, and deformation of the rubber strip after it comes out of the sliding sleeve can be more effectively avoided.

[0022] 4. The present invention sets a forming mechanism, and when the rotating sleeve rotates, it will drive the fan blades on the outer wall of the rotating sleeve to rotate synchronously, so that the fan blades move the air to generate air flow, and the blowing direction is the position of the heat sink on the sliding sleeve, so as to blow away the hot air outside the heat sink, thereby reducing the problem of high ambient air temperature affecting the heat dissipation of the heat sink.

[0023] 5. The present invention sets a fastening mechanism to reduce the volume of the inflatable airbag when the extrusion speed is faster and the temperature of the rubber strip is higher, thereby reducing the wrapping and squeezing of the rubber strip by the inflatable airbag, so as to avoid the problem that when the temperature of the rubber strip is high and the transmission speed is fast, the force of horizontal penetration is less than the blocking force of the inflatable airbag wrapping the rubber strip when passing through the inflatable airbag, causing the rubber strip to be radially deformed, squeezed and bent and unable to pass through the inflatable airbag normally. Then, under normal working conditions, the inflatable airbag wraps the rubber strip and rotates and rubs it, thereby increasing the quality of the rubber strip when it is extruded. At the same time, it can also adaptively reduce the possibility of accidental deformation of the rubber strip under high load, high temperature and rapid extrusion, thereby ensuring the stability of the quality of the rubber strip during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 The structure of the forming mechanism of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 3 It is a schematic cross-sectional structure diagram of the forming mechanism of the present invention;

[0027] Figure 4 It is a schematic cross-sectional structure diagram of the forming mechanism of the present invention;

[0028] Figure 5 The disassembled structure of the molding mechanism of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 6 The disassembled structure of the molding mechanism of the present invention is shown in FIG. Figure 2 ;

[0030] Figure 7 The structure of the forming mechanism of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 8 The structure of the forming mechanism of the present invention is shown in FIG. Figure 3 ;

[0032] Fig. 9 It is a schematic diagram of the disassembled structure of the forming mechanism of the present invention;

[0033] Fig.10 For the present invention Figure 2 A magnified image of point A;

[0034] Fig.11 The motion state of the forming mechanism of the present invention is shown in FIG. Figure 1 ;

[0035] Fig.12The motion state of the forming mechanism of the present invention is shown in FIG. Figure 2 ;

[0036] Fig.13 It is a structural schematic diagram of the annular air groove of the present invention;

[0037] Fig.14 For the present invention Figure 4 The enlarged view of point B;

[0038] Fig.15 It is a motion state diagram of the inflatable airbag of the present invention.

[0039] In the figure: 2 extrusion tube, 3 molding mechanism, 301 sliding sleeve, 302 connecting sleeve, 303 heat sink, 304 turntable, 305 spring, 306 hollow telescopic rod, 307 threaded rotating block, 309 fixing rod, 310 bearing ring, 311 rotating sleeve, 312 fan blade, 313 inflatable airbag, 4 fastening mechanism, 401 circular hole, 402 connecting tube, 403 rotating ring, 404 through hole, 405 annular air groove, 406 vertical groove. DETAILED DESCRIPTION

[0040] Example 1: Please refer to Figure 1-4 , the present invention provides a technical solution: a molding die for producing automotive rubber accessories, comprising an extrusion tube 2, wherein a molding mechanism 3 is arranged inside the extrusion tube 2;

[0041] The forming mechanism 3 comprises:

[0042] The sliding sleeve 301 is a hollow columnar structure. A connecting sleeve 302 is fixedly connected to one side of the sliding sleeve 301. The connecting sleeve 302 is a hollow columnar structure. The hollow diameters of the connecting sleeve 302 and the inner wall of the sliding sleeve 301 are equal. The sliding sleeve 301 is used for the connecting sleeve 302 to be pushed to slide horizontally on the inner wall of the extrusion tube 2.

[0043] The heat sink 303, the outer wall of the heat sink 303 is fixedly connected to the outer wall of the sliding sleeve 301, one end of the sliding sleeve 301 is fixedly connected to a rotating disk 304, one side of the rotating disk 304 is fixedly connected to a spring 305, one end of the spring 305 is fixedly connected to one side of the extrusion tube 2, and the heat sink 303 is used to absorb heat from the sliding sleeve 301 and dissipate heat externally;

[0044] When producing rubber for automobiles, the raw material is put into the rubber extruder, and then after being heated and melted at high temperature, it is pushed into the extrusion tube 2 through the threads inside the extruder, and enters the connecting sleeve 302 and the sliding sleeve 301 inside the extrusion tube 2 to be shaped and extruded, and gradually cools down while being extruded through the connecting sleeve 302 and the sliding sleeve 301 inside the extrusion tube 2, completing the working process of melting, plasticizing and extruding the rubber;

[0045] Example 2: Please refer to Figure 1-12On the basis of the first embodiment, the present invention provides a technical solution: a hollow telescopic rod 306 is fixedly connected to one side of the turntable 304 , and one end of the hollow telescopic rod 306 is fixedly connected to one side of the outer wall of the extrusion tube 2 .

[0046] One side of the sliding sleeve 301 is rotatably connected to a threaded rotating block 307 via a bearing, and the threaded rotating block 307 is meshed with a rotating sleeve 311 .

[0047] The outer wall of the rotating sleeve 311 is rotatably connected to a bearing ring 310 , one side of the bearing ring 310 is fixedly connected to a fixing rod 309 , and one end of the fixing rod 309 is fixedly connected to one side of the rotating disk 304 .

[0048] The outer wall of the rotating sleeve 311 is fixedly connected with a fan blade 312, and the outer wall of the rotating disk 304 is provided with a fastening mechanism 4;

[0049] When the extruder is working under high load and high speed, the screw thread in the extruder rotates quickly to push the rubber through the extrusion tube 2. The pressure on the rubber inside the extrusion tube 2 increases, so that the pressure on the inner wall of the extrusion tube 2 increases. The connecting sleeve 302 is located in the inner wall of the extrusion tube 2. The cross section on one side of the connecting sleeve 302 is subjected to horizontal pressure. Under high pressure, the pressure is greater than the elastic force of the spring 305, so the connecting sleeve 302 and the sliding sleeve 301 are pushed outward from the extrusion tube 2, and the spring 305 is pulled through the turntable 304 to stretch and deform. Different degrees of pressure increase represent different speeds of rubber extrusion. Under high pressure, it means that the rubber is extruded faster, so the cooling residence time of the rubber in the extrusion tube 2 is longer. The temperature is high, and at this time, the connection sleeve 302 and the sliding sleeve 301 will be pushed out due to the high pressure. After the connection sleeve 302 and the sliding sleeve 301 are pushed out, the melted rubber will first pass through the inner wall of the extrusion tube 2, then enter the connection sleeve 302, and finally be extruded through one end of the sliding sleeve 301, thereby extending the transmission stroke of the rubber, and then increasing the cooling efficiency of the rubber, avoiding the problem that the temperature of the rubber strip is not reduced to a suitable temperature due to the short residence time in the connection sleeve 302 and the sliding sleeve 301 under high-efficiency extrusion work, and the softening and easy deformation after being extruded from the sliding sleeve 301. The sliding sleeve 301 is automatically extended to different degrees according to different pressure levels, thereby adaptively completing the cooling effect of the rubber under different pressure levels;

[0050] Example 3: Please refer to Figure 1-15 On the basis of the first and second embodiments, the present invention provides a technical solution: the fastening mechanism 4 includes a circular hole 401 , the circular hole 401 is opened inside the rotating disk 304 , and the inside of the circular hole 401 is connected to the inside of the hollow telescopic rod 306 .

[0051] A connecting pipe 402 is fixedly connected to one side of the rotating disk 304, the inside of the circular hole 401 is connected to the inside of the connecting pipe 402, the outer wall of the rotating sleeve 311 is rotatably connected to a rotating ring 403, the inner wall of the rotating ring 403 is provided with a through hole 404, and the inside of the connecting pipe 402 is connected to the inside of the through hole 404;

[0052] The outer wall of the rotating sleeve 311 is provided with an annular air groove 405, and the interior of the rotating sleeve 311 is provided with a vertical groove 406, the interior of the vertical groove 406 is connected with the interior of the annular air groove 405, and the interior of the annular air groove 405 is connected with the interior of the through hole 404;

[0053] After the sliding sleeve 301 is pushed out, a part of the rubber will contact the inner wall of the extrusion tube 2 until the pressure of the cross section of one side of the connecting sleeve 302 is equal to the elastic force of the spring 305 after stretching. Then the sliding sleeve 301 will not continue to push outward. At this time, the rubber will enter the connecting sleeve 302 and the sliding sleeve 301, extending the pushing stroke of the rubber. At the same time, after the sliding sleeve 301 is pushed out of the extrusion tube 2 for a distance, the heat exchange with the outside air is quickly realized through the large contact area between the heat sink 303 on the outer wall of the sliding sleeve 301 and the outside air, and the temperature of the sliding sleeve 301 and the connecting sleeve 302 that is heat-conducted by the rubber is quickly dissipated outward, and the sliding sleeve 301 is pushed out of the extrusion tube 2 for a distance. The distance between the sliding sleeve 301 and the heat sink 303 will correspond to different heat dissipation effects from small to large, so that when the pressure is high and the rubber is pushed at a fast speed, the sliding sleeve 301 is pushed far away, and the heat sink 303 has a larger contact area with the air to improve the heat dissipation effect. When the pressure is low and the rubber is pushed at a slow speed, the sliding sleeve 301 is pushed short, and the heat sink 303 has a smaller contact area to achieve limited heat dissipation, so as to ensure that even under different pressures, the temperature of the rubber extruded from one end of the sliding sleeve 301 can be kept as stable as possible, reduce the problem of excessively high or too low temperature after rubber extrusion, maintain the stability of rubber extrusion, and avoid the problem of quality affected by different rubber extrusion temperatures;

[0054] When the rubber is squeezed out from the inside of the sliding sleeve 301, due to the elastic force of the rubber, it is in a squeezed state in the sliding sleeve 301. After being squeezed out from the sliding sleeve 301, the elastic force is released, and the rubber strip itself expands and increases in diameter, so that it will contact and abut against the threaded rotating block 307 close to the outlet end of the sliding sleeve 301 at this time. Therefore, through the static friction force when abutting against the four surrounding threaded rotating blocks 307, as the rubber strip is continuously pushed out, the threaded rotating block 307 is driven to rotate and roll, thereby limiting the rubber strip just out of the sliding sleeve 301, and preventing the rubber strip from bending due to natural falling due to gravity.

[0055] The rubber strip is introduced into the rotating sleeve 311 in front of it, and the rubber strip is wrapped by the inflatable airbag 313 in the rotating sleeve 311. When the inflatable airbag 313 wraps the rubber strip, it will exert pressure toward the center of the rubber strip to press the rubber strip to make it more round and tight, thereby preventing the rubber strip that has just come out of the sliding sleeve 301 from being pressed and deformed when it is pressed against by the threaded rotating block 307 used for transmission limit when it has a certain temperature and is relatively soft;

[0056] When the threaded rotating block 307 rotates, the thread on the threaded rotating block 307 meshes with the rotating sleeve 311, and drives the rotating sleeve 311 to rotate slowly, so that when the rubber strip passes through the inflatable airbag 313 on the inner wall of the rotating sleeve 311, the rotating sleeve 311 drives the inflatable airbag 313 to rotate synchronously and slowly, so that the rubber strip can be more evenly contacted and rounded, and the problem of high temperature, softness, and deformation of the rubber strip after it comes out of the sliding sleeve 301 can be more effectively avoided;

[0057] When the rotating sleeve 311 rotates, the fan blades 312 on the outer wall of the rotating sleeve 311 will be driven to rotate synchronously, so that the fan blades 312 move the air to generate air flow, and the blowing direction is the heat sink 303 on the sliding sleeve 301, so as to blow away the hot air outside the heat sink 303, thereby reducing the problem that the surrounding air temperature is high and affects the heat dissipation of the heat sink 303;

[0058] After the sliding sleeve 301 and the rotating disk 304 are pushed out, the hollow telescopic rod 306 will be stretched, and negative pressure will be formed inside the hollow telescopic rod 306. The hollow telescopic rod 306 is connected to the connecting pipe 402 through the rotating disk 304. The connecting pipe 402 is connected to the through hole 404 inside the rotating ring 403, and the through hole 404 is connected to the annular annular air groove 405 provided on the rotating sleeve 311. The annular annular air groove 405 is connected to the inside of the inflatable airbag 313 through the vertical groove 406. Therefore, even if the rotating sleeve 311 is rotating and the rotating ring 403 and the rotating sleeve 311 are rotating relatively, the through hole 404 can always be connected to the inside of the inflatable airbag 313 through the annular air groove 405 and the vertical groove 406. Therefore, after the sliding sleeve 301 and the rotating disk 304 are pushed out, when the hollow telescopic rod 306 is stretched to form negative pressure, the inflatable airbag 313 will be filled with air. The air inside the airbag 313 is drawn into the hollow telescopic rod 306, so that when the extrusion speed is faster and the temperature of the rubber strip is higher, the volume of the inflatable airbag 313 is reduced, thereby reducing the wrapping and squeezing of the rubber strip by the inflatable airbag 313, so as to avoid the problem that when the temperature of the rubber strip is high and the transmission speed is fast, the force of horizontal penetration is less than the force blocked by the inflatable airbag 313 wrapping the rubber strip when passing through the inflatable airbag 313, causing the rubber strip to be radially deformed, squeezed and bent and unable to pass through the inflatable airbag 313 normally. Then, under normal working conditions, the inflatable airbag 313 wraps the rubber strip and rotates and rubs it, thereby increasing the quality of the rubber strip during extrusion. At the same time, it can also adaptively reduce the possibility of accidental deformation of the rubber strip under high load, high temperature and rapid extrusion, thereby ensuring the stability of the quality of the rubber strip during processing.

[0059] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A molding die for the production of automotive rubber parts, characterized in that: It comprises an extrusion tube (2), wherein a forming mechanism (3) is arranged inside the extrusion tube (2); The forming mechanism (3) comprises: A sliding sleeve (301), the sliding sleeve (301) being a hollow columnar structure, a connecting sleeve (302) being fixedly connected to one side of the sliding sleeve (301), the connecting sleeve (302) being a hollow columnar structure, the hollow diameters of the connecting sleeve (302) and the inner wall of the sliding sleeve (301) being equal, and the sliding sleeve (301) being used for the connecting sleeve (302) to be pushed so as to slide horizontally on the inner wall of the extrusion tube (2); a heat sink (303), wherein the outer wall of the heat sink (303) is fixedly connected to the outer wall of the sliding sleeve (301), one end of the sliding sleeve (301) is fixedly connected to a rotating disk (304), one side of the rotating disk (304) is fixedly connected to a spring (305), one end of the spring (305) is fixedly connected to one side of the extrusion tube (2), and the heat sink (303) is used to absorb heat from the sliding sleeve (301) and dissipate heat externally; A hollow telescopic rod (306) is fixedly connected to one side of the rotating disk (304), and one end of the hollow telescopic rod (306) is fixedly connected to one side of the outer wall of the extrusion tube (2); The outer wall of the rotating disk (304) is provided with a fastening mechanism (4); The fastening mechanism (4) comprises a circular hole (401), the circular hole (401) is opened inside the rotating disk (304), and the inside of the circular hole (401) is connected to the inside of the hollow telescopic rod (306); A connecting tube (402) is fixedly connected to one side of the rotating disk (304); the interior of the circular hole (401) is in communication with the interior of the connecting tube (402); a rotating ring (403) is rotatably connected to the outer wall of the rotating sleeve (311); a through hole (404) is formed on the inner wall of the rotating ring (403); and the interior of the connecting tube (402) is in communication with the interior of the through hole (404); An annular air groove (405) is provided on the outer wall of the rotating sleeve (311), and a vertical groove (406) is provided inside the rotating sleeve (311). The interior of the vertical groove (406) is communicated with the interior of the annular air groove (405), and the interior of the annular air groove (405) is communicated with the interior of the through hole (404). The annular air groove (405) is communicated with the interior of the inflatable air bag (313) in the rotating sleeve (311) through the vertical groove (406).

2. The molding die for producing automotive rubber parts according to claim 1, characterized in that: One side of the sliding sleeve (301) is rotatably connected to a threaded rotating block (307) via a bearing, and the threaded rotating block (307) is meshed with a rotating sleeve (311).

3. The molding die for producing automotive rubber parts according to claim 2, characterized in that: The outer wall of the rotating sleeve (311) is rotatably connected to a bearing ring (310), one side of the bearing ring (310) is fixedly connected to a fixing rod (309), and one end of the fixing rod (309) is fixedly connected to one side of the rotating disk (304).

4. The molding die for producing automotive rubber parts according to claim 3, characterized in that: The outer wall of the rotating sleeve (311) is fixedly connected with a fan blade (312).

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