A tire molding injection mold

Abstract

The present invention relates to the field of mold technology, and discloses a tire molding injection mold, comprising an upper mold plate and a lower mold plate, wherein the upper mold plate and the lower mold plate are arranged inside an injection molding machine, and the lower mold plate is fixedly installed with four T-shaped slide rails at equal intervals in the circumferential direction of the outer surface of one side of the upper mold plate. The present invention causes the lower wedge block to abut against the inclined surface of the lower wedge block, so that the lower wedge block drives the slide block to move closer to each other, and the slide block drives four tire outer mold shells to move closer to each other, thereby synthesizing an integral tire shape. Through this arrangement, the tire outer mold shell is divided into four parts, and when the tire outer mold shell is subsequently worn, it does not need to be replaced as a whole, which greatly reduces the replacement cost of the mold.

Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to a tire molding injection mold. Background Art

[0002] Tires are circular elastic rubber products that roll on the ground and are installed on various vehicles or machines. Tires are often used under complex and harsh conditions. They are subjected to various deformations, loads, forces, and high and low temperature effects during driving, so they must have high load-bearing performance, traction performance, and buffering performance. At the same time, they are also required to have high wear resistance and flex resistance, as well as low rolling resistance and heat generation.

[0003] An existing tire molding injection mold (Announcement No.: CN116353000B) has at least the following disadvantages:

[0004] When the above patent is in use, the deformation center mold part rotates in the middle of the sliding base mold part. When the rubber liquid is injected into the fixed injection mold part, due to the centripetal force, it will first be injected into the outer ring of the tire molding, so that the texture of the entire tire is annularly layered. The tire in the above patent determines the shape of the tire through the tire outer mold cover. Since the tire outer mold cover is an integral structure, when the tire outer mold cover is worn, it needs to be replaced as a whole, which greatly increases the replacement cost. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a tire molding injection mold.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A tire molding injection mold, comprising an upper template and a lower template, wherein the upper template and the lower template are arranged inside an injection molding machine, and the lower template is fixedly installed with four T-shaped slide rails equidistantly in the circumferential direction of the outer surface of one side of the upper template, and the outer surfaces of the four T-shaped slide rails are slidably installed with sliders, and the lower surface of the slider is provided with a T-shaped slide groove matching the T-shaped slide rail, and the T-shaped slide rail is slidably installed with the inner wall of the T-shaped slide groove, and the ends of the four sliders close to each other are fixedly installed with a tire outer mold shell, and the outer surface of the lower template close to the other end of the slider is fixedly installed with four stoppers, and the other end of the slider is abutted against the stopper, and two springs are symmetrically arranged on both sides of the T-shaped slide rail, one end of the two springs is fixedly installed with one end of the T-shaped slide rail, and the other ends of the two springs are fixedly installed with the outer surface of the slider, and the upper surfaces of the four sliders are fixedly installed with lower wedge blocks, and the outer surface of the upper template close to the lower template is provided with a groove, and the bottom wall of the groove is fixedly installed with four upper wedge blocks matching the lower wedge blocks.

[0008] As a further solution of the present invention, an upper cover plate is fixedly installed on the bottom wall of the groove near the middle position, a lower cover plate is fixedly installed on the outer surface of the lower template near the middle position, the lower cover plate is arranged between four tire outer mold shells, an injection port is opened through the outer surface of the middle position of the upper cover plate, an injection channel is opened on the outer surface of the upper cover plate near the lower cover plate, and the injection port is connected to the injection channel.

[0009] As a further solution of the present invention, a circular hole is penetrated through the outer surface in the middle of the lower cover plate, a push rod is slidably inserted into the circular hole, a mold core is fixedly installed through the circular hole at one end of the push rod close to the lower cover plate, and the circumferential outer surface of the mold core is sleeved with a tire body.

[0010] As a further solution of the present invention, a bearing is fixedly installed on the outer surface of the other side of the lower template, a limiting sleeve is fixedly installed on the inner ring of the bearing, the other end of the push rod passes through the limiting sleeve and is slidably installed on the inner wall of the limiting sleeve, a plurality of limiting blocks are fixedly installed at equal distances on the inner wall of the limiting sleeve, a limiting groove matching the limiting block is opened on the circumferential outer surface of the push rod, and the limiting block is slidably installed on the inner wall of the limiting groove.

[0011] As a further solution of the present invention, a shell is fixedly installed on the outer surface of the other side of the lower template, and a cylinder is fixedly installed on the outer surface of one side of the shell. The telescopic end of the cylinder passes through the outer surface of the shell and is rotatably installed on the end face of the push rod.

[0012] As a further solution of the present invention, a first bevel gear is fixedly installed on one end of the limit sleeve close to the cylinder, a drive motor is fixedly installed on the outer surface of one end of the shell, and a second bevel gear is fixedly installed on the output end of the drive motor passing through the outer surface of the shell, and the second bevel gear is meshed with the first bevel gear.

[0013] As a further solution of the present invention, guide pillars are fixedly installed at four corner positions of the outer surface of the lower template close to the tire outer mold shell, and guide holes are opened through the four corner positions of the outer surface of the upper template, and the guide holes are matched with the guide pillars.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The upper wedge block and the lower wedge block are inclined against each other, so that the lower wedge block drives the slider to move closer to each other, and the slider drives the four tire outer mold shells to move closer to each other, thereby synthesizing an integral tire shape. Through this arrangement, the tire outer mold shell is divided into four parts. When the tire outer mold shell is subsequently worn, it does not need to be replaced as a whole, which greatly reduces the replacement cost of the mold;

[0016] 2. The second bevel gear is driven to rotate by a driving motor, so that the second bevel gear drives the first bevel gear to rotate, and the first bevel gear drives the limit sleeve to rotate. The limit sleeve transmits torque through the limit block and the limit groove to drive the push rod to rotate, and the push rod drives the mold core to reciprocate forward and reverse motion. The reciprocating forward and reverse motion of the mold core allows the PVC material flowing into the space between the tire outer mold shell and the mold core to be stirred, so that it can be evenly filled into the tire outer mold shell and the mold core, ensuring that there are no pores on the surface of the injection-molded tire body, thereby improving the quality of the tire body injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a tire molding injection mold proposed by the present invention;

[0018] Figure 2 This is a front structural schematic diagram of a tire molding injection mold proposed by the present invention;

[0019] Figure 3 A rear view structural schematic diagram of a tire molding injection mold proposed by the present invention;

[0020] Figure 4 A schematic diagram of a tire outer mold shell of a tire molding injection mold proposed by the present invention is closed;

[0021] Figure 5 A schematic diagram of opening the tire outer mold shell of a tire molding injection mold proposed by the present invention;

[0022] Figure 6 A schematic diagram of a core lifting of a tire molding injection mold proposed by the present invention;

[0023] Figure 7 A schematic diagram of a mold core of a tire molding injection mold proposed by the present invention;

[0024] Figure 8 A schematic diagram of an upper mold plate of a tire molding injection mold proposed by the present invention;

[0025] Fig. 9 A schematic diagram of a lower mold plate of a tire molding injection mold proposed by the present invention;

[0026] Fig.10 This is a schematic diagram of the back side of an upper mold plate of a tire molding injection mold proposed by the present invention;

[0027] Fig.11 This is a schematic overall cross-sectional view of a tire molding injection mold proposed by the present invention;

[0028] Fig.12 A schematic diagram of a T-shaped slide rail of a tire molding injection mold proposed by the present invention;

[0029] Fig.13 A schematic diagram of a limiting sleeve of a tire molding injection mold proposed by the present invention;

[0030] Fig.14 The present invention is a schematic diagram of a push rod of a tire molding injection mold.

[0031] In the figure: 1. upper template; 2. lower template; 3. shell; 4. cylinder; 5. drive motor; 6. first bevel gear; 7. second bevel gear; 8. injection port; 9. guide column; 10. guide hole; 11. tire body; 12. groove; 13. upper cover plate; 14. injection runner; 15. T-type slide rail; 16. slider; 17. stopper; 18. lower wedge block; 19. tire outer mold shell; 20. upper wedge block; 21. mold core; 22. push rod; 23. limit groove; 24. spring; 25. lower cover plate; 26. bearing; 27. limit block; 28. limit sleeve. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Reference Figure 1-Figure 14A tire molding injection mold comprises an upper mold plate 1 and a lower mold plate 2. The upper mold plate 1 and the lower mold plate 2 are arranged inside an injection molding machine. Four T-shaped slide rails 15 are fixedly installed at equal intervals in the circumferential direction of the outer surface of one side of the lower mold plate 2 close to the upper mold plate 1. Slide blocks 16 are slidably installed on the outer surfaces of the four T-shaped slide rails 15. T-shaped slide grooves matching the T-shaped slide rails 15 are opened on the lower surfaces of the slide blocks 16. The T-shaped slide rails 15 are slidably installed on the inner walls of the T-shaped slide grooves. The ends of the four slide blocks 16 close to each other are fixedly installed with tire outer mold shells 19. The lower mold plate 2 close to the slide blocks Four stoppers 17 are fixedly mounted on the outer surface of the other end of the slider 16, and the other end of the slider 16 abuts against the stopper 17. Two springs 24 are symmetrically arranged on both sides of the T-shaped slide rail 15, one end of the two springs 24 is fixedly mounted on one end of the T-shaped slide rail 15, and the other ends of the two springs 24 are fixedly mounted on the outer surface of the slider 16. Lower wedge blocks 18 are fixedly mounted on the upper surfaces of the four sliders 16, and a groove 12 is provided on the outer surface of the upper template 1 close to the lower template 2, and four upper wedge blocks 20 matching the lower wedge blocks 18 are fixedly mounted on the bottom wall of the groove 12.

[0036] When the upper mold plate 1 moves close to the lower mold plate 2, the upper wedge block 20 will abut against the inclined surface of the lower wedge block 18, so that the lower wedge block 18 drives the slider 16 to move close to each other, and the slider 16 drives the four tire outer mold shells 19 to move close to each other, thereby synthesizing an integral tire shape. After the upper mold plate 1 is completely closed close to the lower mold plate 2, the injection molding machine injects PVC material between the tire outer mold shell 19 and the mold core 21 through the injection port 8 and the injection runner 14. This device facilitates the overall injection molding of the PVC tire.

[0037] In this embodiment, an upper cover plate 13 is fixedly installed on the bottom wall of the groove 12 near the middle position, and a lower cover plate 25 is fixedly installed on the outer surface of the lower template 2 near the middle position. The lower cover plate 25 is arranged between four tire outer mold shells 19. An injection port 8 is opened through the outer surface of the middle position of the upper cover plate 13, and an injection channel 14 is opened on the outer surface of the upper cover plate 13 near the lower cover plate 25. The injection port 8 is connected to the injection channel 14.

[0038] The outer shape of the tire body 11 is formed by the lower cover plate 25, the upper cover plate 13, the mold core 21 and four tire outer mold shells 19. The inner wall of the tire outer mold shell 19 is provided with a tread pattern.

[0039] In this embodiment, a circular hole is formed on the outer surface of the middle position of the lower cover plate 25, and a push rod 22 is slidably inserted into the inner part of the circular hole. A mold core 21 is fixedly installed on one end of the push rod 22 close to the lower cover plate 25 through the circular hole, and a tire body 11 is sleeved on the circumferential outer surface of the mold core 21. A bearing 26 is fixedly installed on the outer surface of the other side of the lower template 2, and a limiting sleeve 28 is fixedly installed on the inner ring of the bearing 26. The other end of the push rod 22 passes through the limiting sleeve 28 and is slidably installed on its inner wall. A plurality of limiting blocks 27 are fixedly installed on the inner wall of the limiting sleeve 28 at equal intervals. A limiting groove 23 matching the limiting block 27 is formed on the circumferential outer surface of the push rod 22, and the limiting block 27 is slidably installed on the inner wall of the limiting groove 23. A first bevel gear 6 is fixedly installed on one end of the limiting sleeve 28 close to the cylinder 4, and a driving motor 5 is fixedly installed on the outer surface of one end of the housing 3. A second bevel gear 7 is fixedly installed on the output end of the driving motor 5 through the outer surface of the housing 3, and the second bevel gear 7 is meshed with the first bevel gear 6.

[0040] The second bevel gear 7 is driven to rotate by the driving motor 5, so that the second bevel gear 7 drives the first bevel gear 6 to rotate, and the first bevel gear 6 drives the limit sleeve 28 to rotate. The limit sleeve 28 transmits torque through the limit block 27 and the limit groove 23 to drive the push rod 22 to rotate, and the push rod 22 drives the mold core 21 to reciprocate forward and reverse motion. The reciprocating forward and reverse motion of the mold core 21 allows the PVC material flowing into the space between the tire outer mold shell 19 and the mold core 21 to be stirred, so that it can be evenly filled into the tire outer mold shell 19 and the mold core 21, ensuring that there are no pores on the surface of the injection-molded tire body 11, thereby improving the injection molding quality of the tire body 11.

[0041] In this embodiment, a shell 3 is fixedly installed on the outer surface of the other side of the lower template 2, and a cylinder 4 is fixedly installed on the outer surface of one side of the shell 3. The telescopic end of the cylinder 4 penetrates the outer surface of the shell 3 and the end surface of the push rod 22 for rotational installation.

[0042] After the tire outer mold shell 19 is opened, the push rod 22 drives the mold core 21 to extend out from between the tire outer mold shells 19 through the extension movement of the telescopic end of the cylinder 4, thereby driving the tire body 11 to extend out of the tire outer mold shell 19. Through this device, after the subsequent tire body 11 is injection molded, it is convenient for the operator to take it out.

[0043] In this embodiment, guide pillars 9 are fixedly installed at the four corner positions of the outer surface of the lower template 2 close to the tire outer mold shell 19, and guide holes 10 are opened through the four corner positions of the outer surface of the upper template 1, and the guide holes 10 are matched with the guide pillars 9.

[0044] The guide pins 9 and the guide holes 10 ensure that the upper mold plate 1 and the lower mold plate 2 can be completely closed, thereby ensuring the position accuracy of the two.

[0045] It should be noted that when the present invention is in use, the operator installs the upper template 1 and the lower template 2 on the injection molding machine body respectively. It should be noted that the lower template 2 is in a stationary state after installation, and the upper template 1 is driven to move close to the lower template 2 through the motion mechanism on the injection molding machine. The guide pillars 9 and the guide holes 10 ensure that the upper template 1 and the lower template 2 can be completely closed. When the upper template 1 moves close to the lower template 2, the upper wedge block 20 will abut against the inclined surface of the lower wedge block 18, so that the lower wedge block 18 drives the slider 16 to move close to each other, and the slider 16 drives the four tire outer mold shells 19 to move close to each other. Thus, an integral tire shape is synthesized. After the upper mold plate 1 is completely closed close to the lower mold plate 2, the injection molding machine injects the PVC material into the space between the tire outer mold shell 19 and the mold core 21 through the injection port 8 and the injection flow channel 14. The device is convenient for integral injection molding of the PVC tire. When the PVC material is injected, the second bevel gear 7 is driven to rotate by the driving motor 5, so that the second bevel gear 7 drives the first bevel gear 6 to rotate, and the first bevel gear 6 drives the limiting sleeve 28 to rotate. The limiting sleeve 28 transmits torque through the limiting block 27 and the limiting groove 23, thereby driving the push rod 22 to rotate, and the push rod 22 drives the mold core The mold core 21 reciprocates forward and reverse motions, and the PVC material flowing into the space between the tire outer mold shell 19 and the mold core 21 can be stirred by the reciprocating forward and reverse motions of the mold core 21, so that it can be evenly filled into the tire outer mold shell 19 and the mold core 21, ensuring that there are no pores on the surface of the injection-molded tire body 11, thereby improving the injection molding quality of the tire body 11; when the injection molding is completed, the upper mold plate 1 and the lower mold plate 2 are separated, at this time the lower wedge block 18 and the upper wedge block 20 are separated, and the slider 16 is separated from each other by the force of the spring 24, thereby driving the tire outer mold shell 19 to separate, and because the tire body 1 1. During the injection molding, tread patterns will be generated on the surface. When the tire outer mold shell 19 is separated, it is convenient for the subsequent removal of the tire. Through this arrangement, the tire outer mold shell 19 is divided into four parts. When the subsequent tire outer mold shell 19 is worn, it does not need to be replaced as a whole, which greatly reduces the replacement cost of the mold. After the tire outer mold shell 19 is opened, the push rod 22 drives the mold core 21 to extend out of the tire outer mold shell 19 through the extension movement of the telescopic end of the cylinder 4, thereby driving the tire body 11 to extend out of the tire outer mold shell 19. Through this device, after the subsequent tire body 11 is injected, it is convenient for the operator to take it out.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tire molding injection mold, comprising an upper mold plate (1) and a lower mold plate (2), wherein the upper mold plate (1) and the lower mold plate (2) are arranged inside an injection molding machine, characterized in that: Four T-shaped slide rails (15) are fixedly installed at equal intervals in the circumferential direction of the outer surface of one side of the lower template (2) close to the upper template (1), and sliders (16) are slidably installed on the outer surfaces of the four T-shaped slide rails (15). The lower surface of the slider (16) is provided with a T-shaped slide groove matching the T-shaped slide rail (15), and the T-shaped slide rail (15) is slidably installed on the inner wall of the T-shaped slide groove. The ends of the four sliders (16) close to each other are fixedly installed with a tire outer mold shell (19), and the outer surface of the lower template (2) close to the other end of the slider (16) is fixedly installed with four stoppers (17), and the other end of the slider (16) is against the stopper (17). Two springs (24) are symmetrically arranged on both sides of the T-shaped slide rail (15). The two springs (24) are symmetrically arranged on both sides of the T-shaped slide rail (15). One end of the spring (24) is fixedly mounted on one end of the T-shaped slide rail (15), and the other ends of the two springs (24) are fixedly mounted on the outer surface of the slider (16). The upper surfaces of the four sliders (16) are fixedly mounted with lower wedge blocks (18). The outer surface of the upper template (1) close to the lower template (2) is provided with a groove (12). The bottom wall of the groove (12) is fixedly mounted with four upper wedge blocks (20) matching the lower wedge blocks (18). The bottom wall of the groove (12) close to the middle position is fixedly mounted with an upper cover plate (13). The outer surface of the lower template (2) close to the middle position is fixedly mounted with a lower cover plate (25). The lower cover plate (25) is arranged between the four tire outer mold shells (19). The upper cover plate (13) is fixedly mounted on the bottom wall of the groove (12) close to the middle position. ) is provided with an injection port (8) through the outer surface at the middle position of the upper cover plate (13), an injection channel (14) is provided on the outer surface of the side close to the lower cover plate (25), the injection port (8) is communicated with the injection channel (14), a circular hole is provided through the outer surface at the middle position of the lower cover plate (25), a push rod (22) is slidably inserted into the inside of the circular hole, a mold core (21) is fixedly installed on one end of the push rod (22) close to the lower cover plate (25) through the circular hole, a tire body (11) is sleeved on the circumferential outer surface of the mold core (21), a bearing (26) is fixedly installed on the outer surface of the other side of the lower template (2), a limit sleeve (28) is fixedly installed on the inner ring of the bearing (26), and the other end of the push rod (22) is penetrated by the limit sleeve (28). The positioning sleeve (28) is slidably mounted on the inner wall thereof, a plurality of limit blocks (27) are fixedly mounted on the inner wall of the limit sleeve (28) at equal intervals, a limit groove (23) matching the limit block (27) is provided on the circumferential outer surface of the push rod (22), the limit block (27) is slidably mounted on the inner wall of the limit groove (23), a housing (3) is fixedly mounted on the outer surface of the other side of the lower template (2), a cylinder (4) is fixedly mounted on the outer surface of one side of the housing (3), the telescopic end of the cylinder (4) passes through the outer surface of the housing (3) and is rotatably mounted on the end surface of the push rod (22), a first bevel gear (6) is fixedly mounted on one end of the limit sleeve (28) close to the cylinder (4), and a drive motor (5) is fixedly mounted on the outer surface of one end of the housing (3),The output end of the driving motor (5) passes through the outer surface of the housing (3) and is fixedly mounted with a second bevel gear (7), and the second bevel gear (7) is meshed with the first bevel gear (6).

2. A tire molding injection mold according to claim 1, characterized in that: Guide pillars (9) are fixedly mounted at four corner positions of the outer surface of the lower template (2) on one side close to the tire outer mold shell (19), and guide holes (10) are penetrated through the four corner positions of the outer surface of the upper template (1), and the guide holes (10) are matched with the guide pillars (9).

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