Tread winding device shared by bias tire and radial tire

Abstract

The invention discloses a bias tire and radial tire shared tread winding device which comprises a shaft body assembly, the periphery of the shaft body assembly is sleeved with a connecting assembly, the shaft body assembly is connected to a winding drum assembly through the connecting assembly, and the shaft body assembly stretches out and draws back in the axial direction to drive the winding drum assembly to expand and shrink to achieve tread winding production; by arranging the connecting assembly, different winding drums can be replaced to be connected to the shaft body assembly, the winding drums are driven by rotating the shaft body assembly to achieve tread winding, the connecting assembly can be matched with different winding drums, and therefore different types of tire tread winding equipment can be shared, the requirements of the production process are met, and the utilization rate of the winding equipment is increased; and the cost of tread winding equipment is saved.

Description

Technical Field

[0001] The invention relates to the technical field of tire production, and in particular to a tread winding device shared by a bias tire and a radial tire. Background Art

[0002] In the current production process of radial tires and bias engineering tires, after various semi-finished products are formed into tire tubes through the molding process, they need to be wound through different types of shaping and winding machines to form tire blanks, and then transferred to the vulcanization workshop to be vulcanized into tires.

[0003] Due to the wide variety of tires currently available, the winding and forming machines for bias tires, radial tires, engineering tires, jumbo tires, etc. are independent structures, and the market demand for radial tires and bias engineering tires is seasonal. The utilization rate of the winding and forming equipment for the two types of tires is low, which indirectly increases the production cost. Summary of the invention

[0004] In view of the shortcomings of the prior art, a tread winding device shared by bias tires and radial tires is proposed, which solves the problem that the market demand for radial tires and bias engineering tires in the above background technology is seasonal, the utilization rate of winding molding equipment for the two types of tires is low, which indirectly increases the production cost.

[0005] To achieve the above objectives, the present invention proposes the following technologies to achieve the above objectives: A tread winding device for bias tires and radial tires includes an axle assembly, the outer sleeve of the axle assembly is provided with a connecting assembly, and the axle assembly is connected to a winding drum assembly through the connecting assembly. The axle assembly expands and contracts along the axial direction to drive the winding drum assembly to expand and contract to achieve tread winding production.

[0006] Furthermore, the shaft assembly includes an inner shaft and an outer shaft sleeved on the outer periphery of the inner shaft, the inner shaft and the outer shaft are respectively connected to the winding drum assembly through connecting assemblies, and the inner shaft and the outer shaft slide relative to each other to drive the winding drum assembly to expand and contract to realize tread winding production.

[0007] Furthermore, the connecting assembly includes a first connecting assembly detachably connected to the inner shaft, and a second connecting assembly detachably connected to the outer shaft. The inner shaft expands and contracts within the outer shaft to adjust the distance between the first connecting assembly and the second connecting assembly, and drives the winding drum assembly to expand and contract.

[0008] Furthermore, the first connecting assembly includes a first connecting disk, the first connecting disk is sleeved on the end of the inner shaft, and one end of the winding drum assembly is connected to the outer circumferential surface of the first connecting disk.

[0009] Furthermore, the second connecting assembly includes a second connecting disk located at the end of the outer shaft, the second connecting disk is sleeved on the periphery of the inner shaft and is slidably connected to the inner shaft, and the other end of the winding drum assembly is connected to the outer circumferential surface of the second connecting disk.

[0010] Furthermore, a mounting seat is arranged at one end of the second connecting plate close to the outer shaft, a first connecting seat is arranged between the mounting seat and the outer shaft, and inner and outer sides of the first connecting seat are detachably connected to the outer shaft and the mounting seat respectively.

[0011] Furthermore, the winding drum assembly includes a first connecting seat fixedly connected to the first connecting disk via a first connecting surface, and a second connecting seat fixedly connected to the second connecting disk via a second connecting surface, and the first connecting surface and the second connecting surface are equidistant from the outer surface of the inner shaft.

[0012] Furthermore, the winding drum assembly also includes a connecting rod with one end hinged to the first connecting seat or the second connecting seat, and the other end of the connecting rod is rotatably connected to the finger-type tile. The inner shaft and the outer shaft slide relative to each other to adjust the distance between the first connecting seat and the second connecting seat, thereby driving the connecting rod to rotate to achieve the opening or contraction of the finger-type tile.

[0013] Furthermore, an outer side of the first connecting seat is detachably connected to an outer chuck, an end of the inner shaft is detachably connected to a second connecting seat, and an inner chuck is arranged on the outer side of the second connecting seat.

[0014] Furthermore, a tire blank is clamped between the inner chuck and the outer chuck, a winding tread is arranged on the outside of the tire blank, and the shaft assembly rotates and drives the tire blank to rotate through the connecting assembly to realize radial tire tread winding.

[0015] Compared with the prior art, the comprehensive effects brought by the present invention include: By setting up a connecting component, different winding drums can be replaced and connected to the shaft component, and the winding drum can be driven by rotating the shaft component to achieve tread winding. The connecting component can cooperate with different winding drums respectively, so as to meet the common use of tread winding equipment for different types of tires, meet the production process requirements, improve the utilization rate of the winding equipment, and save the cost of the tread winding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation structure of the bias tire winding drum according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the local structure; Figure 3 This is a schematic cross-sectional structural diagram of a first connection disk according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the front view structure of the first connection disk according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the side structure of the first connection disk according to an embodiment of the present invention; Figure 6 This is a schematic cross-sectional structural diagram of a second connection disk according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the front view structure of the second connection disk according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the side structure of the second connection disk according to an embodiment of the present invention; Fig. 9 It is a schematic diagram of the opening structure of the bias tire winding drum according to an embodiment of the present invention; Fig.10 It is a schematic diagram of the contraction structure of the bias tire winding drum according to an embodiment of the present invention; Fig.11 This is a schematic cross-sectional structural diagram of a first connecting socket according to an embodiment of the present invention; Fig.12 This is a schematic diagram of a cross-sectional structure of a support plate according to an embodiment of the present invention; Fig.13 This is a schematic diagram of the side view structure of a support plate according to an embodiment of the present invention; Fig.14 This is a front view structural diagram of a drum plate according to an embodiment of the present invention; Fig.15 This is a schematic diagram of the side structure of a drum plate according to an embodiment of the present invention; Fig.16 This is a schematic diagram of the top view of the drum plate according to an embodiment of the present invention; Fig.17 This is a schematic diagram of the drum plate engagement structure of an embodiment of the present invention; Fig.18 It is a schematic diagram of the installation structure of the radial tire winding mechanism according to an embodiment of the present invention.

[0017] Legend: 1. Inner shaft; 2. Outer shaft; 3. First connecting plate; 4. Connecting ring; 5. Threaded connecting hole; 6. Second connecting plate; 7. Mounting seat; 8. First connecting seat; 9. Avoidance groove; 10. Clamping groove; 11. Copper sleeve; 12. First connecting surface; 13. First connecting seat; 14. Second connecting surface; 15. Second connecting seat; 16. Spacer block; 17. Limiting step; 18. Limiting groove; 19. Calibration threaded hole; 20. Connecting rod; 21. Limiting block; 22. Support plate; 23. Drum plate; 24. Outer chuck; 25. Second connecting seat; 26. Inner chuck; 27. Chuck mounting hole; 28. Bending portion; 29. ​​First sealing groove; 30. Second sealing groove; 31. Third sealing groove; 32. Fourth sealing groove; 33. Fifth sealing groove. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present invention.

[0019] In this document, terms such as "upper", "lower", "left", "right", "top", etc. that indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] like Figures 1 to 18 As shown, a tread winding device shared by bias tires and radial tires includes an axle assembly, the outer sleeve of the axle assembly is provided with a connecting assembly, and is connected to a winding drum assembly through the connecting assembly. The axle assembly expands and contracts along the axial direction to drive the winding drum assembly to expand and contract to achieve tread winding production.

[0021] By setting up a connecting component, different winding drums can be replaced and connected to the shaft component, and the winding drum can be driven by rotating the shaft component to achieve tread winding. The connecting component can cooperate with different winding drums respectively, so as to meet the common use of tread winding equipment for different types of tires, meet the production process requirements, improve the utilization rate of the winding equipment, and save the cost of the tread winding equipment.

[0022] Specifically, the existing radial tire blank structure is close to the tire shape, and the winding drum uses a set of left and right chucks similar to the tire rim to support the tire mouth structure, and the internal inflated support, and then the blank is rotated for tread winding; the bias tire blank is usually in a straight cylinder form, and the drum plate is expanded during winding to achieve support for tread winding. This embodiment designs a winding drum based on the radial tire winding machine. By replacing the winding drum, the radial tire and bias tire tread winding common equipment can be met to meet the production process requirements.

[0023] In the tread winding device shared by bias tires and radial tires of this embodiment, the shaft assembly includes an inner shaft 1 and an outer shaft 2 sleeved on the outer periphery of the inner shaft 1, the inner shaft 1 and the outer shaft 2 are respectively connected to the winding drum assembly through a connecting assembly, and the inner shaft 1 and the outer shaft 2 slide relative to each other to drive the winding drum assembly to expand and contract to realize tread winding production.

[0024] Specifically, the inner shaft 1 and the outer shaft 2 act as driving shafts to drive the connecting assembly and the winding drum assembly to rotate to realize the winding production of the tread on the winding drum. The inner shaft 1 and the outer shaft 2 extend and retract axially to drive the connecting assembly closer or farther away, thereby driving the winding drum assembly to deform.

[0025] In the tread winding device shared by the bias tire and the radial tire of this embodiment, the connecting assembly includes a first connecting assembly detachably connected to the inner shaft 1, and a second connecting assembly detachably connected to the outer shaft 2. The inner shaft 1 is telescoped inside the outer shaft 2 to adjust the distance between the first connecting assembly and the second connecting assembly, and drives the winding drum assembly to expand and contract.

[0026] The first connecting assembly and the second connecting assembly are respectively matched with the inner shaft 1 and the outer shaft 2 to realize the connection between the winding drum assembly and the shaft assembly, so as to facilitate the movement of the shaft assembly to drive the winding drum to expand and contract to achieve the desired shape for winding production.

[0027] In the tread winding device shared by the bias tire and the radial tire of this embodiment, the first connecting assembly includes a first connecting disk 3, which is sleeved on the end of the inner shaft 1, and one end of the winding drum assembly is connected to the outer circumferential surface of the first connecting disk 3.

[0028] Specifically, a connecting ring 4 is provided at the end of the first connecting disk 3, and the inner side of the connecting ring 4 is abutted against the end face of the inner shaft 1. The connecting ring 4 is provided with evenly distributed connecting holes on the circumference, and a corresponding threaded connecting hole 5 is provided on the end face of the inner shaft 1. The first connecting disk 3 is fixedly connected to the end of the inner shaft 1 through the connecting ring 4 and screws. The axial connection between the first connecting disk 3 and the inner shaft 1 is realized through the above-mentioned arrangement, thereby reducing the influence on the surface flatness of the shaft body.

[0029] In the tread winding device shared by the bias tire and the radial tire of this embodiment, the second connecting assembly includes a second connecting plate 6 located at the end of the outer shaft 2, the second connecting plate 6 is sleeved on the outer periphery of the inner shaft 1 and is slidably connected to the inner shaft 1, and the other end of the winding drum assembly is connected to the outer circumferential surface of the second connecting plate 6.

[0030] Specifically, a mounting seat 7 is provided at one end of the second connecting plate 6 close to the outer shaft 2, a first connecting seat 8 is provided between the mounting seat 7 and the outer shaft 2, and the inner and outer sides of the first connecting seat 8 are detachably connected to the outer shaft 2 and the mounting seat 7 respectively.

[0031] The second connecting disk 6 is fixed to one end of the outer shaft 2 and is sleeved on the outside of the inner shaft 1. A avoidance groove 9 is provided on the side of the second connecting disk 6 close to the outer shaft 2. The mounting seat 7 is located on the periphery of the second connecting disk 6 and has an outer diameter larger than the outer diameter of the second connecting disk 6. The first connecting seat 8 is annularly sleeved on the outside of the outer shaft 2, and a step is provided on the side close to the outer shaft 2. The first connecting seat 8 is clamped on the end of the outer shaft 2 through the step. Two groups of concentric connecting holes are provided on the first connecting seat 8. The inner connecting hole is used to connect to the end face of the outer shaft 2 through screws, and the outer connecting hole is for connection with the mounting seat 7. The connection between the outer shaft 2 and the second connecting disk 6 is realized through the above structure.

[0032] Specifically, the avoidance groove 9 is used to accommodate the end of the connecting bolt protruding from the first connecting seat 8, so as to facilitate the stable connection between the first connecting seat 8 and the outer shaft 2, and avoid interference between the mounting seat 7 and the first connecting seat 8; the connecting bolt is connected to the end of the outer shaft 2 axially to reduce the wear on the surface of the shaft body and avoid affecting the strength of the shaft body, and at the same time facilitate the connection when replacing the radial tire winding structure, which is conducive to achieving the purpose of sharing the winding device.

[0033] Preferably, since the second connecting disk 6 is sleeved on the outer periphery of the inner shaft 1 and slides and retracts outside the inner shaft 1 following the outer shaft 2, in order to reduce the friction between the second connecting disk 6 and the inner shaft 1, a clamping groove 10 is respectively opened at both ends of the inner diameter of the second connecting disk 6, and a copper sleeve 11 is clamped in the clamping groove 10. The copper sleeve 11 is annular and has an inner diameter smaller than the inner diameter of the second connecting disk 6. Through the above-mentioned setting, the second connecting disk 6 is in direct contact with the inner shaft 1 through the copper sleeve 11, thereby reducing the wear on the inner shaft 1. At the same time, the copper sleeve 11 is arranged on both sides of the second connecting disk 6, which can also play a role in guiding the sliding of the second connecting disk 6 along the outer periphery of the inner shaft 1, thereby improving the movement stability of the second connecting disk 6.

[0034] Specifically, the snap-in groove 10 is connected with the avoidance groove 9 , and the diameter of the avoidance groove 9 is larger than the diameter of the snap-in groove 10 . The snap-in groove 10 is connected with the avoidance groove 9 , which is convenient for processing the snap-in groove 10 and installing the copper sleeve 11 inside the snap-in groove 10 .

[0035] In the tread winding device for bias tires and radial tires of this embodiment, the winding drum assembly includes a first connecting seat 13 fixedly connected to the first connecting plate 3 via a first connecting surface 12, and a second connecting seat 15 fixedly connected to the second connecting plate 6 via a second connecting surface 14, and the first connecting surface 12 and the second connecting surface 14 are at equal distances from the outer surface of the inner shaft 1.

[0036] Specifically, there are multiple first connecting seats 13 and first connecting surfaces 12 corresponding to each other evenly distributed along the circumference of the first connecting disk 3, a connecting hole for connecting the first connecting seat 13 is opened in the middle of the first connecting surface 12, and a spacer block 16 is provided at the junction of two adjacent first connecting surfaces 12. The first connecting seat 13 is installed between two adjacent spacer blocks 16, and the spacer block 16 fills the gap between the two adjacent first connecting seats 13, thereby limiting the movement tendency of the first connecting seat 13 in the circumferential direction and improving the connection stability.

[0037] Preferably, a limiting step 17 is provided at one end of the first connecting disk 3 close to the second connecting disk 6, and the first connecting surface 12 is the bottom surface of the limiting step 17. The side surface of the limiting step 17 abuts against the side end surface of the first connecting seat 13 to limit the first connecting seat 13, and cooperates with the bolt connection between the first connecting seat 13 and the first connecting surface 12 to realize a stable connection between the first connecting seat 13 and the first connecting disk 3.

[0038] Further preferably, two groups of first connecting seats 13 are arranged on the first connecting disk 3, and two groups of corresponding first connecting surfaces 12 are arranged. A limiting groove 18 is provided on the surface of one side of the first connecting disk 3 away from the second connecting disk 6, and the other group of first connecting surfaces 12 is the bottom surface of the limiting groove 18. The two side surfaces of the limiting groove 18 abut against the two sides of the first connecting seat 13 to achieve limiting, thereby enhancing the connection strength between the first connecting seat 13 and the first connecting disk 3.

[0039] Since the first connecting disk 3 is connected to the inner shaft 1 only through the connecting ring 4 at the end, when the first connecting disk 3 is sleeved on the outside of the inner shaft 1, it may deviate from the axis of the inner shaft 1. At this time, the first connecting surfaces 12 on both sides of the surface of the first connecting disk 3 will not be on the same plane, thereby affecting the installation and normal expansion and contraction of the first connecting seat 13 and the winding drum assembly. Therefore, a calibration threaded hole 19 is opened on the raised part between the limiting groove 18 and the limiting step 17. The calibration threaded hole 19 is threadedly connected with a calibration bolt, and the end of the calibration bolt is abutted against the surface of the inner shaft 1. By rotating the calibration bolt, the length of the calibration bolt extending out of the first connecting disk 3 is adjusted, thereby changing the distance between the first connecting disk 3 and the inner shaft 1, so that the axis of the first connecting disk 3 and the inner shaft 1 are in a straight line, and the first connecting surface 12 is in the same plane. At the same time, the calibration bolt is tightened against the inner shaft 1, which can also enhance the connection strength between the first connecting disk 3 and the inner shaft 1, and ensure that the first connecting disk 3 and the first connecting seat 13 synchronously follow the movement of the inner shaft 1.

[0040] Specifically, a limiting step 17 and a limiting groove 18 are also provided on the second connecting disk 6 to form a second connecting surface 14, and evenly distributed spacer blocks 16 are provided on the limiting step 17 and the limiting groove 18. The limiting step 17 on the second connecting disk 6 is provided at one end close to the first connecting disk 3, and the limiting groove 18 on the second connecting disk 6 is provided at a side close to the outer shaft 2.

[0041] In the tread winding device shared by the bias tire and the radial tire of the present embodiment, the winding drum assembly also includes a connecting rod 20 hinged to the first connecting seat 13 or the second connecting seat 15 at one end. By setting the first connecting surface 12 and the second connecting surface 14 to be at equal distances from the outer surface of the inner shaft 1, the first connecting seat 13 and the second connecting seat 15 are made to be on the same plane, and then the connecting rod 20 is symmetrical about the midpoint between the first connecting disk 3 and the second connecting disk 6, so that the relative sliding of the inner shaft 1 and the outer shaft 2 drives the connecting rod 20 to perform symmetrical deformation, and the winding drum assembly performs uniform expansion and contraction, thereby ensuring the uniformity of the tread winding and improving the winding production quality.

[0042] In order to prevent the first connecting disk 3 and the second connecting disk 6 from colliding with each other due to the close proximity of the first connecting disk 3 and the second connecting disk 6 when they are outside the inner shaft 1, a limiting block 21 is provided on an end face of the first connecting disk 3 close to the second connecting disk 6, and a limiting block 21 is provided on an end face of the second connecting disk 6 that is clamped with the first connecting disk 3. Preferably, the limiting blocks 21 on the first connecting disk 3 and the second connecting disk 6 are arranged relative to each other, and countersunk holes are provided in the axial direction on the limiting blocks 21 to accommodate countersunk bolts for fixing the connection disks. By providing the limiting blocks 21, the first connecting disk 3 and the second connecting disk 6 are prevented from colliding and causing wear. At the same time, since the distance between the connecting disks is limited, the angle between the connecting rods 20 on the two connecting disks will not be too small, thereby avoiding interference between the connecting rods 20 and ensuring that the connecting rods 20 can rotate freely around the connecting seat.

[0043] Specifically, the other end of the connecting rod 20 is rotatably connected to the finger-shaped tile, and the inner shaft 1 and the outer shaft 2 slide relative to each other to adjust the distance between the first connecting seat 13 and the second connecting seat 15, thereby driving the connecting rod 20 to rotate to realize the opening or contraction of the finger-shaped tile.

[0044] The connecting rod 20 connecting the first connecting plate 3 and the second connecting plate 6 are of equal length. Through the above-mentioned setting, an isosceles trapezoid is formed between the finger-shaped tiles, the inner shaft 1 and the connecting rod 20. The above-mentioned structure makes the finger-shaped tiles parallel to the inner shaft 1. By rotating the two ends of the connecting rod 20 and the finger-shaped tiles and the connecting seat respectively, the distance between the finger-shaped tiles and the inner shaft 1 is adjusted, thereby changing the diameter of the winding drum, which is convenient for retracting the finger-shaped tiles after the winding is completed to disassemble the bias tread.

[0045] Specifically, corresponding to the first connecting seat 13 and the second connecting seat 15, several groups of connecting rods 20 are evenly arranged along the circumference of the inner shaft 1, and multiple groups of finger-shaped tiles are arranged. Through the connection of the connecting rods 20, multiple finger-shaped tiles are distributed on the outer side of the inner shaft 1 in a trajectory close to a circle. Through the above-mentioned arrangement, the finger-shaped tiles are made as close to a circular contour as possible, thereby being close to the shape of the tire, improving the tread winding efficiency, and improving the tire production quality.

[0046] Preferably, the finger-type tile includes a support plate 22 and a drum plate 23, the support plate 22 is located on the side of the drum plate 23 close to the connecting rod 20, and is located in the middle of the drum plate 23. The longitudinal section of the support plate 22 is an inverted U-shape, and its top plane is in contact with the bottom surface of the drum plate 23. The connecting rod 20 is hinged in the U-shaped groove through the mounting holes relatively opened on its side walls and the rotating shaft; the longitudinal section of the drum plate 23 is fan-shaped, and its outer surface has an arc, so that the shape surrounded by multiple drum plates 23 is closer to a circle, thereby improving the tread winding quality.

[0047] Further preferably, a groove is provided on the bottom surface of the drum plate 23, and the support plate 22 is installed in the groove. The groove is provided to cooperate with the support plate 22 to limit the support plate 22 and at the same time enhance the connection strength between the support plate 22 and the drum plate 23, thereby ensuring that the connecting rod 20 can smoothly drive the support plate 22 and the drum plate 23 to move synchronously.

[0048] In order to avoid the drum plate 23 from forming a larger circle when it shrinks, which results in the drum plate 23 being unable to meet the winding requirements of a small tire blank, the adjacent edges between the drum plates 23 are set to be toothed, and two adjacent drum plates 23 can mesh with each other. Through the above settings, when winding a bias tire with a smaller diameter, the angle between the connecting rods 20 on both sides can be increased to make the drum plate 23 close to the inner shaft 1, and then the drum plates 23 can mesh with each other, thereby reducing the diameter of the winding drum as much as possible to meet production requirements and expand the adaptability of the winding drum. At the same time, the above structural setting can also reduce the weight of the drum plate 23, achieve lightweight winding drum, reduce the force on the connecting rod 20, and increase service life.

[0049] In the tread winding device for bias tires and radial tires of this embodiment, an outer side of the first connecting seat 8 is detachably connected to an outer chuck 24, and an end of the inner shaft 1 is detachably connected to a second connecting seat 25, and an inner chuck 26 is arranged on the outer side of the second connecting seat 25.

[0050] Specifically, a tire blank is clamped between the inner chuck 26 and the outer chuck 24, and a winding tread is arranged outside the tire blank. The shaft assembly rotates and drives the tire blank to rotate through the connecting assembly to realize radial tire tread winding.

[0051] When it is necessary to wrap the radial tire, under the above-mentioned structural setting, loosen the bolts connecting the connecting ring 4 and the end of the inner shaft 1, remove the calibration bolts, remove the first connecting plate 3, loosen the bolts on the outside of the first connecting seat 8, remove the second connecting plate 6, and then install the outer chuck 24 on the first connecting seat 8 through the connecting hole on the outside of the first connecting seat 8, thereby realizing the connection with the outer shaft 2, and then connect the second connecting seat 25 to the inner shaft 1 through the mounting hole of the connecting ring 4 at the end of the inner shaft 1, and install the inner chuck 26 matching the inner shaft 1 through the second connecting seat 25. Since the radial tire embryo structure is close to the tire shape, adjust the relative sliding of the inner shaft 1 and the outer shaft 2, and adjust the distance between the outer chuck 24 and the inner chuck 26 to match the width of the radial tire, similar to the tire rim supporting the tire mouth structure, install the tire embryo between the outer chuck 24 and the inner chuck 26, and the shaft assembly drives the inner and outer chucks and the tire embryo to rotate to realize the tread winding of the radial tire.

[0052] Preferably, the second connection seat 25 has the same shape as the first connection seat 8, is annular, and has an L-shaped cross section. A step is provided on the side close to the inner shaft 1, and the end of the inner shaft 1 is clamped in the step. The ends are respectively provided with connection holes matching the inner shaft threaded connection hole 5 and a chuck mounting hole 27 located on the periphery of the connection hole. The end of the inner chuck 26 connected to the second connection seat 25 is provided with a bending portion 28, and the bending portion 28 is sleeved on the outer periphery of the second connection seat 25 to wrap the second connection seat 25. The end surface of the main part of the inner chuck 26 is connected to the second connection seat 25. The inner end surface of 25 is flush, and the above-mentioned arrangement ensures the tight connection between the inner chuck 26 and the second connecting seat 25; the outer chuck 24 connected to the outer shaft 2 is connected to the first connecting seat 8 at one end thereof and is provided with a clamping step which matches and clamps with the end of the first connecting seat 8, and the vertical side wall of the clamping step is provided with a mounting hole which is the same as that on the mounting seat 7 of the second connecting disk 6, which is aligned with the outer connecting hole on the first connecting seat 8 and matched with the bolts to realize the tight connection between the outer chuck 24 and the first connecting seat 8, thereby ensuring that the outer shaft 2 drives the outer chuck 24 to move stably through the first connecting seat 8.

[0053] Specifically, since the radial tire embryo needs to be inflated internally to provide support for the wrapped tread, it is required that the inner chuck 26 and the outer chuck 24 have good sealing properties with the connecting seat. In order to ensure the above-mentioned sealing effect, a first sealing groove 29 is opened on the connecting surface where the first connecting seat 8 and the outer side surface of the outer shaft 2 are in contact, and a first sealing ring is arranged in the first sealing groove 29. The first sealing ring is arranged around the outer shaft 2 to seal the connecting surface between the first connecting seat 8 and the outer shaft 2. A second sealing groove 30 is arranged on the periphery of the first sealing groove 29. The second sealing groove 30 is also opened on the first connecting seat 8. A second sealing ring is arranged in the second sealing groove 30. The second sealing ring is arranged around the first connecting seat 8 and is clamped between the first connecting seat 8 and the outer chuck 24 to seal. The outer circumferential surface of the first connecting seat 8 is sealed with the outer chuck 24; similarly, a third sealing groove 31 for installing a third sealing ring inside is provided on the connecting surface where the second connecting seat 25 is clamped with the outer side surface of the inner shaft 1, so as to seal between the surface of the inner shaft 1 and the second connecting seat 25. A fourth sealing groove 32 is provided on the outermost surface of the second connecting seat 25, and a fourth sealing ring is installed through the fourth sealing groove 32 to seal the connecting surface between the second connecting seat 25 and the inner chuck 26. Through the arrangement of the above-mentioned sealing grooves and sealing rings, the sealing between the inner chuck 26 and the outer chuck 24 and the tire blank is guaranteed, thereby ensuring the sealing of the gas filled into the tire blank from the hole on the surface of the inner shaft 1, avoiding air leakage, and ensuring that the tire blank has a certain shape, thereby improving the tread winding quality.

[0054] Preferably, a fifth sealing groove 33 is opened on the inner side surface where the end of the outer shaft 2 cooperates with the inner shaft 1 to install a sealing ring, so as to seal the inner shaft 1 and the outer shaft 2 to prevent the gas in the tire from leaking from the gap between the inner shaft 1 and the outer shaft 2, thereby further improving the air tightness of the radial tire winding molding structure and ensuring the quality of the radial tire tread winding.

[0055] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "rotation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0056] Although the embodiments of the present invention have been shown and described in detail, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tread winding device for bias tires and radial tires, characterized in that: The invention comprises an axle assembly, the outer sleeve of which is provided with a connecting assembly, and the axle assembly is connected to a winding drum assembly through the connecting assembly. The axle assembly expands and contracts along the axial direction to drive the winding drum assembly to expand and contract to realize tread winding production.

2. The tread winding device for bias tires and radial tires according to claim 1, characterized in that: The shaft assembly includes an inner shaft and an outer shaft sleeved on the outer periphery of the inner shaft. The inner shaft and the outer shaft are respectively connected to the winding drum assembly through connecting assemblies. The inner shaft and the outer shaft slide relative to each other to drive the winding drum assembly to expand and contract to realize tread winding production.

3. The tread winding device for bias tires and radial tires according to claim 2, characterized in that: The connecting assembly includes a first connecting assembly detachably connected to the inner shaft, and a second connecting assembly detachably connected to the outer shaft. The inner shaft expands and contracts in the outer shaft to adjust the distance between the first connecting assembly and the second connecting assembly, and drives the winding drum assembly to expand and contract.

4. The tread winding device for bias tires and radial tires according to claim 3, characterized in that: The first connecting assembly comprises a first connecting disk, the first connecting disk is sleeved on the end of the inner shaft, and one end of the winding drum assembly is connected to the outer circumferential surface of the first connecting disk.

5. The tread winding device for bias tires and radial tires according to claim 4, characterized in that: The second connecting assembly includes a second connecting disk located at the end of the outer shaft, the second connecting disk is sleeved on the periphery of the inner shaft and is slidably connected to the inner shaft, and the other end of the winding drum assembly is connected to the outer circumferential surface of the second connecting disk.

6. The tread winding device for bias tires and radial tires according to claim 5, characterized in that: A mounting seat is arranged at one end of the second connecting plate close to the outer shaft, a first connecting seat is arranged between the mounting seat and the outer shaft, and inner and outer sides of the first connecting seat are detachably connected to the outer shaft and the mounting seat respectively.

7. The tread winding device for bias tires and radial tires according to claim 5, characterized in that: The winding drum assembly includes a first connecting seat fixedly connected to the first connecting disk via a first connecting surface, and a second connecting seat fixedly connected to the second connecting disk via a second connecting surface. The first connecting surface and the second connecting surface are equidistant from the outer surface of the inner shaft.

8. The tread winding device for bias tires and radial tires according to claim 7, characterized in that: The winding drum assembly also includes a connecting rod with one end hinged to the first connecting seat or the second connecting seat, and the other end of the connecting rod is rotatably connected to the finger-type tile. The inner shaft and the outer shaft slide relative to each other to adjust the distance between the first connecting seat and the second connecting seat, thereby driving the connecting rod to rotate to achieve the opening or contraction of the finger-type tile.

9. The tread winding device for bias tires and radial tires according to claim 6, characterized in that: The outer side of the first connecting seat is detachably connected with an outer chuck, the end of the inner shaft is detachably connected with a second connecting seat, and the outer side of the second connecting seat is provided with an inner chuck.

10. The tread winding device for bias tires and radial tires according to claim 9, characterized in that: A tire blank is clamped between the inner chuck and the outer chuck, and a winding tread is arranged on the outside of the tire blank. The shaft assembly rotates and drives the tire blank to rotate through the connecting assembly to realize radial tire tread winding.

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