A manufacturing process for an electric vehicle tire containing complex tread patterns

Abstract

The application discloses a kind of complex tread patterns containing electric vehicle tire manufacturing process, including rubber mixing, the structural member of tire and after the step of forming process in tire mold is carried out again into vulcanization equipment to carry out vulcanization process after the product of forming, the outside of tire mold is provided with jet mechanism, jet mechanism includes several push block, several air cylinders, ring pipe and multiple bridging blocks.In the application, by setting the jet mechanism, the compressed air can be sprayed to the pattern surface and sidewall of the slider through the jet groove and nozzle by introducing compressed air into the jet mechanism, so that the rubber scraps adhered to the slider can be blown away under the airflow, preventing the rubber scraps remaining on the slider from affecting the tread forming of the rubber tire.

Description

Technical Field

[0001] This invention belongs to the field of tire manufacturing technology, specifically a manufacturing process for electric vehicle tires with complex tread patterns. Background Technology

[0002] The tread pattern design of a tire directly affects its dynamic performance, such as rolling resistance, wet skid resistance, contact stress, and noise. Due to the significant differences between electric vehicles and their components and traditional vehicles, and the fact that the tire is the only part in contact with the road surface, the design of tires specifically for electric vehicles differs from that of traditional vehicle tires in many aspects. Electric vehicle tires often have performance requirements such as lower rolling resistance, stronger load capacity, better wet skid resistance, better grip, lower noise, and higher inflation pressure. Therefore, it is necessary to design and develop green tires for electric vehicles with complex tread patterns.

[0003] Patent CN110815888A discloses a tire processing and molding method, including sequential steps such as blank preforming, mold forming, and vulcanization molding. The method pre-processes a rubber blank that has not undergone mold forming to create several pre-forming grooves and protrusions, so that they correspond and adapt to the various structures within the mold cavity, thereby processing the corresponding tread grooves and tread strips. In particular, the blank preforming process can guide the rubber material in an orderly manner and distribute it evenly, effectively avoiding rubber flow and the formation of rubber slicks at the edges of the tread strips that may occur during subsequent mold forming and related molding processes. This invention addresses issues such as material accumulation and avoids localized rubber bulges in the tread pattern, effectively optimizing the rubber distribution structure in the tread pattern area of ​​the finished tire. This significantly improves tire performance and lifespan, and correspondingly optimizes overall vehicle performance. Patent CN1792599A discloses a radial tire tread pore-free mold with tread pattern blocks for molding the tread pattern. Each tread pattern block consists of a connecting sleeve and several fan-shaped blocks arranged circumferentially within the connecting sleeve. Gaps are provided between adjacent fan-shaped blocks, and the inner wall of each fan-shaped block has a contour for molding the tread pattern. This invention utilizes the tiny gaps between the fan-shaped blocks to replace the vents of traditional molds, expelling air between the tire blank and the mold tread. Due to the small gaps, the finished tire tread only shows traces of the block gaps without rubber strips, resulting in a smooth and aesthetically pleasing tire appearance. It also saves tire rubber, reduces trimming costs, and lowers tire manufacturing costs.

[0004] The aforementioned patent enables the use of molds to form tire tread patterns. However, when using molds to manufacture electric vehicle tires with complex tread patterns, some rubber debris adheres to the surface of the mold pattern during the mold splitting and closing process. As a result, when the tire is squeezed and formed, the rubber is squeezed by the debris, which leads to incomplete formation of the complex tread pattern on the tire surface and affects the quality of the finished tire.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a manufacturing process for electric vehicle tires with complex tread patterns, so as to solve the above-mentioned problems in the prior art.

[0007] To achieve the above objectives, the present invention provides a manufacturing process for electric vehicle tires with complex tread patterns, comprising the following steps:

[0008] S1. Carbon black, natural or synthetic rubber, oil, additives and accelerators and other raw materials are mixed and added into an internal mixer to carry out the internal mixing of rubber to produce internally mixed rubber.

[0009] S2. The obtained nitrified rubber is extruded into tread rubber, triangular rubber strips, sidewall rubber and bead rubber using different extrusion machines, and structural components such as cord fabric and tire bead are made for tires.

[0010] S3. After the semi-finished product is assembled into a green tire on the molding machine, it is put into the tire mold for molding. Then the molded product is put into the vulcanizing equipment for vulcanization, so that the green tire is made into a rubber tire with complex tread pattern.

[0011] S4. After the green tire is extruded and formed by the tire mold, the tire mold performs a mold-separating action, causing each slider of the tire mold to unfold outward. At this time, the formed rubber tire can be taken out of the tire mold.

[0012] S5. After the rubber tire is removed from the tire mold, compressed air is introduced into the end of each cylinder on the jetting mechanism, causing the piston rod of the cylinder to push the push block toward the inside of the mold sleeve, so that the head of the push block can pass between two adjacent sliders.

[0013] S5. Compressed air is introduced into the ring pipe from the input pipe, so that the compressed air enters the bridge block through the connecting pipe, and the compressed air can enter the push block through the hose connected to the bottom of the bridge block. At this time, the push block is filled with compressed air.

[0014] S6. After the compressed air enters the push block, it will be sprayed out from the nozzle and the spray groove respectively, so that the compressed air is sprayed onto the side wall of the slider through the nozzle, and the air sprayed from the spray groove is sprayed onto the patterned surface of the slider, so that the surface of the slider is cleaned and rubber debris is prevented from adhering to the surface of the slider.

[0015] S7. After the slider is cleaned by compressed air, the airflow into the input pipe is cut off and compressed air is introduced into the head of the cylinder, causing the piston rod in the cylinder to pull the push block outward, so that the head of the push block is retracted into the inner wall of the mold sleeve. At this time, the next tire manufacturing process can be carried out in the tire mold.

[0016] The tread pattern of the rubber tire is formed in a tire mold. The tire mold includes a mold sleeve, a plurality of sliders disposed in the mold sleeve, a base plate disposed below the mold sleeve, and a top cover installed on the top of the mold sleeve. A sliding core is installed on the slider, and the inner surface of the sliding core is provided with a tread pattern for imprinting the rubber tire.

[0017] The outer side of the tire mold is provided with an air jet mechanism for removing rubber debris between the sliders.

[0018] In the technical solution of the present invention, the jetting mechanism includes a plurality of push blocks that extend laterally through the mold sleeve, a plurality of cylinders respectively connected to the tail of the plurality of push blocks, an annular tube surrounding the periphery of the mold sleeve, and a plurality of bridging blocks fixed on the top periphery surface of the mold sleeve. The number of push blocks, cylinders and bridging blocks are equal and their positions correspond one-to-one.

[0019] In the technical solution of the present invention, the push block is slidably connected to the mold sleeve, a protruding post is provided at the first end of the mold sleeve, an end block is provided at the first end of the protruding post, the cross-sectional dimensions of the end block are the same as the cross-sectional dimensions of the push block, a rubber ring is embedded on the outer surface of the push block, a tail seat is installed at the tail end of the push block, and the end of the piston rod of the cylinder is fixedly connected to the tail seat.

[0020] In the technical solution of the present invention, the tail end of the push block is protruding and inserted into the tail seat. A countersunk hole is formed on the tail end face of the push block, and the countersunk hole extends into the interior of the protruding post. A plurality of nozzles are formed on the outer surface of the protruding post, and a plurality of spray grooves are formed on the outer surface at the head end of the protruding post. The groove wall of the spray groove is inclined. When the slider slides out from the mold sleeve, the push block can extend between two adjacent sliders, so that the nozzles face the side surface of the slider and the spray grooves face the patterned surface of the slider.

[0021] In the technical solution of the present invention, a through cavity is provided on the first end face of the tailstock, the through cavity is in communication with the countersunk hole, and a first air pipe connector is provided at the top of the tailstock, the first air pipe connector is in communication with the through cavity.

[0022] In the technical solution of the present invention, the first end of the cylinder is fixed to the tail end face of the support seat by bolts, the support seat is fixed to the outer surface of the tire mold by bolts, and the tail end of the push block is sleeved inside the support seat and can move inside the support seat.

[0023] In the technical solution of the present invention, the ring pipe has an annular tubular structure, and a plurality of connecting pipes are connected to the ring pipe. The end of the connecting pipe is connected to the bridging block. The ring pipe is also provided with an input pipe for connecting to an external air source.

[0024] In the technical solution of the present invention, the top and bottom ends of the bridging block are threaded with second air pipe connectors, the two second air pipe connectors are connected to each other, the second air pipe connector at the bottom is connected to the push block through a hose, and a slot is opened on the end surface of the bridging block, and the ring tube is sleeved in the slot.

[0025] In the technical solution of the present invention, a mold cavity is provided inside the mold sleeve, and a protruding sleeve is embedded on the inner wall of the mold cavity between two adjacent sliders. The first end of the protruding sleeve protrudes from the inner wall of the mold cavity, and the push block passes through the protruding sleeve and is slidably connected to the protruding sleeve.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In this invention, by using an air jet mechanism installed on the tire mold, after the rubber tire is formed and removed from the tire mold, compressed air is introduced into the air jet mechanism so that the compressed air can be sprayed onto the tread surface of the slider through the spray groove on the protrusion. This allows the rubber debris adhering to the slider surface during the rubber tire forming process to be blown away by the airflow, preventing the residual rubber debris on the slider from affecting the tread forming of the rubber tire.

[0028] 2. In this invention, by providing multiple nozzles on the protruding post, after the push block is supplied with compressed air, the compressed air can be sprayed onto the side wall of the slider through the nozzles, so that the debris adhering to the side end face of the slider can be blown away. This allows the two adjacent sliders to fit tightly together when the tire mold is closed, preventing gaps from appearing due to the debris trapped between the two adjacent sliders during mold closing, which would cause the tread pattern of the rubber tire to be uneven. Attached Figure Description

[0029] Figure 1This is a simplified schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is an exploded view of the overall structure of the present invention;

[0031] Figure 3 This is a structural diagram of the mold in this invention;

[0032] Figure 4 This is a schematic diagram of the installation of the jet mechanism in this invention;

[0033] Figure 5 This is a structural diagram of the jet mechanism in this invention;

[0034] Figure 6 This is an exploded view of the pusher block in this invention;

[0035] Figure 7 This is a partial structural cross-sectional view of the pusher block in this invention;

[0036] Figure 8 This is a structural diagram of the cylinder in this invention;

[0037] Figure 9 This is a schematic diagram showing the state of the pusher block when it is being pushed in this invention;

[0038] Figure 10 This is a structural diagram of the ring tube in this invention;

[0039] Figure 11 This is a structural diagram of the bridging block in this invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1-Tire mold; 11-Mold sleeve; 111-Mold cavity; 112-Convex sleeve; 12-Slider; 13-Base plate; 14-Top cover;

[0042] 2- Rubber tires;

[0043] 3-Jet mechanism; 31-Push block; 311-Counterhead; 312-Protruding post; 3121-Nozzle; 3122-Spray groove; 313-End block; 3131-Rubber ring; 314-Tail seat; 3141-Through cavity; 3142-First air pipe connector; 32-Cylinder; 321-Support seat; 33-Ring pipe; 331-Connecting pipe; 332-Input pipe; 34-Bridging block; 341-Hose; 342-Slot; 343-Second air pipe connector. Detailed Implementation

[0044] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0045] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0046] Reference Figures 1-11 The manufacturing process of electric vehicle tires with complex tread patterns of the present invention includes the following steps:

[0047] S1. Carbon black, natural or synthetic rubber, oil, additives and accelerators and other raw materials are mixed and added into an internal mixer to carry out the internal mixing of rubber to produce internally mixed rubber.

[0048] S2. The obtained nitrified rubber is extruded into tread rubber, triangular rubber strips, sidewall rubber and bead rubber using different extrusion machines, and structural components such as cord fabric and tire bead are made for tires.

[0049] S3. After the semi-finished product is assembled into a green tire on the molding machine, it is put into the tire mold 1 for molding. Then the molded product is put into the vulcanizing equipment for vulcanization, so that the green tire is made into a rubber tire 2 with complex tread pattern.

[0050] S4. After the green tire is extruded and formed by the tire mold 1, the tire mold 1 performs a mold separation action, causing each slider 12 of the tire mold 1 to unfold outward. At this time, the formed rubber tire 2 can be taken out from the tire mold 1.

[0051] S5. After the rubber tire 2 is removed from the tire mold 1, compressed air is introduced into the end of each cylinder 32 on the jetting mechanism 3, causing the piston rod of the cylinder 32 to push the push block 31 toward the inside of the mold sleeve 11, so that the head end of the push block 31 can pass between two adjacent sliders 12.

[0052] S5. Compressed air is introduced into the ring pipe 33 from the input pipe 332, so that the compressed air enters the bridge block 34 through the connecting pipe 331, and the compressed air can enter the push block 31 through the hose 341 connected to the bottom of the bridge block 34. At this time, the push block 31 is filled with compressed air.

[0053] S6. After the compressed air enters the push block 31, it will be sprayed out from the nozzle 3121 and the spray groove 3122 respectively, so that the compressed air is sprayed onto the side wall of the slider 12 through the nozzle 3121, and the air sprayed from the spray groove 3122 is sprayed onto the patterned surface of the slider 12, so that the surface of the slider 12 is cleaned and rubber debris is prevented from adhering to the surface of the slider 12.

[0054] S7. After the slider 12 is cleaned by compressed air, the airflow into the input pipe 332 is disconnected and compressed air is introduced into the head of the cylinder 32, causing the piston rod in the cylinder 32 to pull the push block 31 outward, so that the head of the push block 31 is retracted into the inner wall of the mold sleeve 11. At this time, the next tire manufacturing process can be carried out in the tire mold 1.

[0055] In this invention, the tread pattern of the rubber tire 2 is formed in a tire mold 1. The tire mold 1 includes a mold sleeve 11, a plurality of sliders 12 disposed within the mold sleeve 11, a base plate 13 disposed below the mold sleeve 11, and a top cover 14 mounted on the top of the mold sleeve 11. The outer surface of the sliders 12 is inclined, and a sliding core is mounted on the sliders 12. The inner surface of the sliding core is provided with a tread pattern for imprinting the rubber tire 2. A mold cavity 111 is formed inside the mold sleeve 11, and the sliders 12 are confined within the mold cavity 111 and can move along the surface of the mold cavity 111. When the tire mold 1 is closed, the mold sleeve 11, the base plate 13 and the top cover 14 are closed together, so that the two adjacent sliders 12 are pressed together by the mold sleeve 11, so that the green tire placed in the tire mold 1 can be extruded and formed by the extrusion of the sliders 12. When the tire mold 1 is separated, the sliders 12 slide obliquely downward along the inner wall of the mold cavity 111, so that the two adjacent sliders 12 are separated from each other, so that the finished rubber tire 2 can be smoothly taken out from the mold cavity 111.

[0056] Specifically, the outer side of the tire mold 1 is provided with an air jet mechanism 3 for removing rubber debris between the various sliders 12. The air jet mechanism 3 includes several push blocks 31 that extend laterally through the mold sleeve 11, several cylinders 32 that are respectively connected to the tail of the push blocks 31, an annular pipe 33 that surrounds the outer periphery of the mold sleeve 11, and several bridging blocks 34 that are fixed on the top outer surface of the mold sleeve 11. The number of push blocks 31, cylinders 32 and bridging blocks 34 are equal and their positions correspond one to one. The annular pipe 33 has an annular tubular structure. The annular pipe 33 is also provided with an input pipe 332 for connecting to an external air source. Compressed air can be introduced into the interior of the annular pipe 33 by introducing compressed air into the input pipe 332.

[0057] Furthermore, the push block 31 is slidably connected to the mold sleeve 11. A protrusion 312 is provided at the first end of the mold sleeve 11, and a tail seat 314 is installed at the tail end of the push block 31. The piston rod end of the cylinder 32 is fixedly connected to the tail seat 314, so that when compressed air is introduced into the cylinder 32, the movement of the piston in the cylinder 32 will drive the push block 31 to move together through the piston rod, thereby controlling the extension and retraction of the push block 31 by the cylinder 32.

[0058] In addition, the front end of the cylinder 32 is fixed to the rear end face of the support base 321 by bolts. The support base 321 is fixed to the outer surface of the tire mold 1 by bolts. The rear end of the push block 31 is sleeved inside the support base 321 and can move within the support base 321. The range of motion of the cylinder 32 driving the push block 31 is limited by the support base 321 to avoid excessive movement.

[0059] In the above scheme, the tail end of the push block 31 is protruding and inserted into the tail seat 314. A countersunk hole 311 is provided on the tail end face of the push block 31, which extends into the interior of the protruding post 312. A through cavity 3141 is provided on the head end face of the tail seat 314, which is connected to the countersunk hole 311. A first air pipe connector 3142 is provided at the top of the tail seat 314, which is connected to the through cavity 3141.

[0060] Specifically, several connecting pipes 331 are connected to the ring pipe 33, and the ends of the connecting pipes 331 are connected to the bridging block 34. The top and bottom ends of the bridging block 34 are threaded with second air pipe connectors 343, and the two second air pipe connectors 343 are connected. The ends of the connecting pipes 331 are sleeved on the second air pipe connectors 343 located at the top, and the second air pipe connectors 343 located at the bottom are connected to the first air pipe connectors 3142 on the push block 31 through hoses 341, so that the interiors of the ring pipe 33, the bridging block 34, and the push block 31 are connected. When compressed air is injected into the ring pipe 33 through the input pipe 332, the compressed air will sequentially enter the interior of the push block 31 along the ring pipe 33 and the bridging block 34, so that the countersunk hole 311 is filled with compressed air.

[0061] Furthermore, a slot 342 is provided on the end surface of the bridging block 34, and the ring tube 33 is sleeved in the slot 342, so that the ring tube 33 is restricted to the outer end of the multiple bridging blocks 34 to prevent the ring tube 33 from falling off.

[0062] Furthermore, several nozzles 3121 are formed on the outer surface of the protrusion 312, and several spray grooves 3122 are formed on the outer surface at the head end of the protrusion 312. The groove wall of the spray groove 3122 is inclined. When the slider 12 slides out from the mold sleeve 11, the push block 31 can extend between two adjacent sliders 12, so that the nozzles 3121 face the side surface of the slider 12 and the spray grooves 3122 face the textured surface of the slider 12. This allows the compressed air in the countersunk hole 311 to be ejected outward through the spray grooves 3122 and the nozzles 3121, so that the compressed air is sprayed onto the slider 12 through the spray grooves 3122. On the tread surface of 2, the rubber debris adhering to the surface of the slider 12 during the molding of the rubber tire 2 can be blown away by the airflow, preventing the residual rubber debris on the slider 12 from affecting the tread molding of the rubber tire 2. Compressed air is sprayed onto the side wall of the slider 12 through the nozzle 3121, so that the debris adhering to the side end face of the slider 12 can be blown away, so that the two adjacent sliders 12 can fit tightly together when the tire mold 1 is closed, preventing the gap caused by the debris trapped between the two adjacent sliders 12 during the mold closing, which would result in uneven splicing of the tread pattern of the rubber tire 2.

[0063] It is worth noting that a convex sleeve 112 is embedded on the inner wall of the mold cavity 111 between two adjacent sliders 12. The push block 31 passes through the convex sleeve 112 and is slidably connected to the convex sleeve 112, so that when the push block 31 is driven by the cylinder 32 to move, it is restricted inside the convex sleeve 112.

[0064] The protruding end of the bushing 112 protrudes from the inner wall of the mold cavity 111, which can prevent dirt generated when the slider 12 slides on the mold cavity 111 from entering the bushing 112 and adhering to the opening of the nozzle 3121 and the spray groove 3122. This prevents the airflow ejected from the nozzle 3121 and the spray groove 3122 from blowing dirt onto the surface of the slider 12, causing dirt to adhere to the patterned surface of the slider 12.

[0065] It is worth noting that the first end of the protruding post 312 is provided with an end block 313. The cross-sectional dimensions of the end block 313 are the same as those of the push block 31. A rubber ring 3131 is embedded on the outer surface of the push block 31. When the push block 31 is retracted into the inner wall of the mold sleeve 11, the end block 313 will retract into the interior of the protruding sleeve 112. At this time, under the action of the rubber ring 3131, the gap between the protruding sleeve 112 and the end block 313 is filled by the rubber ring 3131, which can further prevent dirt from entering the protruding sleeve 112 and adhering to the opening of the nozzle 3121 and the spray groove 3122.

[0066] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A manufacturing process for electric vehicle tires with complex tread patterns, characterized in that: Includes the following steps: S1. Carbon black, natural or synthetic rubber, oil, additives and accelerators are mixed and added into an internal mixer to perform internal mixing of the rubber, producing internally mixed rubber. S2. The obtained internally mixed rubber is extruded into tread rubber, triangular rubber strips, sidewall rubber and bead rubber using different extrusion machines, and the cord fabric and bead structure required for tires are made. S3. After the semi-finished product is assembled into a green tire on the molding machine, it is put into the tire mold (1) for molding process. Then the molded product is put into the vulcanizing equipment for vulcanizing process, so that the green tire is made into a rubber tire (2) with complex tread pattern. S4. After the green tire is extruded and formed by the tire mold (1), the tire mold (1) performs a mold separation action, causing each slider (12) of the tire mold (1) to unfold outward. At this time, the formed rubber tire (2) can be taken out from the tire mold (1). S5. After the rubber tire (2) is removed from the tire mold (1), compressed air is introduced into the end of each cylinder (32) on the jetting mechanism (3), causing the piston rod of the cylinder (32) to push the push block (31) toward the inside of the mold sleeve (11), so that the head end of the push block (31) can pass between two adjacent sliders (12). S5. Compressed air is introduced into the ring pipe (33) from the input pipe (332), so that the compressed air enters the bridge block (34) through the connecting pipe (331), and the compressed air can be introduced into the push block (31) through the hose (341) connected to the bottom of the bridge block (34), at which time the push block (31) is filled with compressed air. S6. After the compressed air enters the push block (31), it will be sprayed out from the nozzle (3121) and the spray groove (3122) respectively, so that the compressed air is sprayed through the nozzle (3121) onto the side wall of the slider (12), and the air sprayed from the spray groove (3122) is sprayed onto the patterned surface of the slider (12), so that the surface of the slider (12) is cleaned and rubber debris is prevented from adhering to the surface of the slider (12). S7. After the slider (12) is cleaned by compressed air, the airflow into the input pipe (332) is disconnected and compressed air is introduced into the head of the cylinder (32), causing the piston rod in the cylinder (32) to pull the push block (31) outward, so that the head of the push block (31) is retracted into the inner wall of the mold sleeve (11). At this time, the next tire manufacturing process can be carried out in the tire mold (1). The tread pattern of the rubber tire (2) is formed in the tire mold (1). The tire mold (1) includes a mold sleeve (11), a plurality of sliders (12) disposed in the mold sleeve (11), a base plate (13) disposed below the mold sleeve (11), and an upper cover (14) installed on the top of the mold sleeve (11). A sliding core is installed on the slider (12), and the inner surface of the sliding core is provided with a pattern for imprinting the rubber tire (2). The outer side of the tire mold (1) is provided with an air jet mechanism (3) for removing rubber debris between each of the sliders (12). The jetting mechanism (3) includes several push blocks (31) that extend laterally through the mold sleeve (11), several cylinders (32) that are respectively connected to the tail of the push blocks (31), an annular pipe (33) that surrounds the outer periphery of the mold sleeve (11), and several bridging blocks (34) that are fixed on the top outer periphery surface of the mold sleeve (11). The number of push blocks (31), cylinders (32) and bridging blocks (34) are equal and their positions correspond one-to-one. The push block (31) is slidably connected to the mold sleeve (11). The push block (31) has a protruding post (312) at its first end. The protruding post (312) has an end block (313) at its first end. The cross-sectional dimensions of the end block (313) are the same as those of the push block (31). A rubber ring (3131) is embedded on the outer surface of the end block (313). The tail end of the push block (31) is fitted with a tail seat (314). The piston rod end of the cylinder (32) is fixedly connected to the tail seat (314). The push block (31) has a protruding tail end that is inserted into the tail seat (314). A countersunk hole (311) is provided on the tail end face of the push block (31). The countersunk hole (311) extends into the interior of the protruding post (312). A plurality of nozzles (3121) are provided on the outer surface of the protruding post (312). A plurality of spray grooves (3122) are provided on the outer surface of the protruding post (312). The groove wall of the spray groove (3122) is inclined. When the slider (12) slides out from the mold sleeve (11), the push block (31) can extend between two adjacent sliders (12), so that the nozzles (3121) face the side surface of the slider (12) and the spray grooves (3122) face the patterned surface of the slider (12). The bridging block (34) has a second air pipe connector (343) threaded to both its top and bottom ends. The two second air pipe connectors (343) are connected to each other. The second air pipe connector (343) at the bottom is connected to the push block (31) through a hose (341). A slot (342) is provided on the end surface of the bridging block (34), and the ring pipe (33) is sleeved in the slot (342). The mold sleeve (11) has a mold cavity (111) inside. A protruding sleeve (112) is embedded on the inner wall of the mold cavity (111) between two adjacent sliders (12). The first end of the protruding sleeve (112) protrudes out of the inner wall of the mold cavity (111). The push block (31) passes through the protruding sleeve (112) and is slidably connected to the protruding sleeve (112).

2. The manufacturing process for electric vehicle tires with complex tread patterns as described in claim 1, characterized in that: The tailstock (314) has a through cavity (3141) on its first end face, which is connected to the countersunk hole (311). The tailstock (314) has a first air pipe connector (3142) at its top end, which is connected to the through cavity (3141).

3. The manufacturing process for electric vehicle tires with complex tread patterns as described in claim 1, characterized in that: The front end of the cylinder (32) is fixed to the rear end face of the support seat (321) by bolts. The support seat (321) is fixed to the outer surface of the tire mold (1) by bolts. The rear end of the push block (31) is sleeved inside the support seat (321) and can move inside the support seat (321).

4. The manufacturing process for electric vehicle tires with complex tread patterns as described in claim 1, characterized in that: The ring pipe (33) has a ring-shaped tubular structure. Several connecting pipes (331) are connected to the ring pipe (33). The end of the connecting pipe (331) is connected to the bridging block (34). The ring pipe (33) is also provided with an input pipe (332) for connecting to an external air source.

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