Tire tread cloth liner fitting structure

Abstract

A tire tread cloth liner fitting structure relates to the technical field of tire production and comprises a workbench, supporting plates are symmetrically arranged on the two sides of the upper end of the workbench, a driving rod is rotatably connected between the two supporting plates, and an expansion plate is movably connected to the driving rod; a tensioning assembly is arranged between the two supporting plates and comprises a winding part and a tensioning part, the winding part is used for winding and storing the cloth liner, and the tensioning part is used for adjusting the tension of the cloth liner; by arranging the tensioning assembly, in the cloth liner attaching process, the tensioning roller can be tightly attached to the surface of the cloth liner under the action of the supporting rod and the gravity of the tensioning roller, so that proper pressure is applied to the cloth liner through the tensioning roller, and when the length of the cloth liner changes, the tension of the cloth liner is always kept within a proper range; the probability of wrinkling and hollowing of the cloth liner in the laminating process is reduced, and the laminating effect of the cloth liner is improved, so that the tire processing quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of tire production, and in particular to a tire tread pad bonding structure. Background Art

[0002] Tires are an important part of cars and are usually composed of three parts: tread, carcass and sidewall. The tread is the part of the tire that contacts the ground, and the carcass is the main structure of the tire, which can bear the weight of the car and support the body. When processing the tread, the pad material needs to be precisely bonded to the other components of the tire.

[0003] In the prior art, when performing tire tread pad cloth bonding processing, the pad cloth is heated and increased in temperature by a bonding roller, and the flexibility of the pad cloth is improved to improve the tightness of the pad cloth bonding. By modifying the internal structure of the bonding roller and heating the pad cloth with hot water, the degree of bonding between the pad cloth and the tread can be significantly improved, reducing the problem of tread non-stickiness caused by poor bonding.

[0004] Although the existing tread cloth bonding device can achieve the bonding effect of the cloth to a certain extent, in actual operation, the softness of the cloth can be improved to a certain extent by preheating the cloth, but at the same time, the cloth will also expand and contract after being heated, resulting in a certain degree of extension and stretching of the length of the cloth. When the length of the cloth changes, the cloth will appear wrinkled and hollow during the bonding process. The existing bonding device cannot flexibly adjust the tension of the cloth according to the change in the length of the cloth during the processing. Therefore, the wrinkles and hollows formed on the cloth will affect the fitting tightness between the cloth and the rubber ring, thereby greatly reducing the tire processing quality. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a tire tread pad cloth bonding structure, which can solve the technical problem that the existing bonding device cannot flexibly adjust the tension of the pad cloth according to the change of the length of the pad cloth during the processing, so the wrinkles and hollows formed on the pad cloth will affect the fitting tightness between the pad cloth and the rubber ring, which will greatly reduce the quality of tire processing and molding.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A tire tread padding structure comprises a workbench, support plates are symmetrically fixedly connected to both sides of the upper end of the workbench, a driving rod is rotatably connected between two groups of the support plates, an expansion plate is movably connected to the driving rod, and a rubber ring is sleeved on the outer surface of the expansion plate; A tensioning assembly is arranged between the two groups of support plates, the tensioning assembly comprises a winding portion and a tensioning portion, the winding portion comprises a rotating shaft fixedly connected to the support plate, a winding roller is rotatably connected to the outer surface of the rotating shaft, a pad cloth is wound on the outer surface of the winding roller, and the winding portion is used to roll up and store the pad cloth; The tensioning part includes a swing rod rotatably connected to the rotating shaft, and the swing rod is fixedly connected to a support rod at one end away from the rotating shaft. The outer surface of the support rod is rotatably connected to a tensioning roller, and the tensioning roller is in close contact with the outer surface of the pad cloth. The tensioning part is used to adjust the tension of the pad cloth.

[0007] Furthermore, a motor is fixedly connected to the outer surface of the support plate on the right side, and the left end of the motor output shaft is fixedly connected to the driving rod. An expansion component is provided on the outer side of the driving rod, and the driving rod is movably connected to the expansion plate through the expansion component. The number of the swing rods is two groups and they are distributed in parallel, and baffles are fixedly connected to the left and right ends of the outer surface of the winding roller.

[0008] Furthermore, the expansion assembly includes a fixed seat fixedly connected to the outer surface of the driving rod, the outer surface of the driving rod is slidably connected to a movable seat, the outer surfaces of the fixed seat and the movable seat are both fixedly connected to a first ear seat, the first ear seat is fixedly connected to a first pin shaft, and the outer surface of the first pin shaft is rotatably connected to a movable rod.

[0009] Furthermore, the movable rod is rotatably connected to a second pin at one end away from the first pin, a second ear seat is fixedly connected to the outer surface of the second pin, and the second ear seat is fixedly connected to the expansion plate. The number of the expansion plates and the movable rods are several groups and distributed in a circular array.

[0010] Furthermore, the expansion plate is in an arc shape, a spiral groove is provided on the outer surface of the driving rod, the driving rod is connected to a locking sleeve through a spiral transmission of the spiral groove, and the locking sleeve is in rotational contact with the outer surface of the movable seat.

[0011] Furthermore, a pressing assembly is provided on the upper side of the expansion plate, and the pressing assembly includes a slide groove opened on the outer surface of the support plate, a slide rod is slidably connected to the inner side of the slide groove, a pressure roller is rotatably connected to the outer surface of the slide rod, and the outer surface of the pressure roller is in contact with the pad cloth.

[0012] Furthermore, the outer surface of the pressure roller is provided with anti-skid grooves, which are distributed in a circular array and are semi-cylindrical. A cavity is embedded in the inner side of the pressure roller, and the cavity is filled with high-temperature liquid. A control valve is provided on the outer surface of the pressure roller.

[0013] Furthermore, a compensation component is provided on the outer surface of the expansion plate, and the compensation component includes a slot opened on the surface of the expansion plate, a movable pin is fixedly connected to the inner surface of the slot, and a bonding plate is rotatably connected to the outer surface of the movable pin, and the bonding plate is arc-shaped and symmetrically distributed on both sides of the expansion plate.

[0014] Furthermore, the outer surface of the driving rod is fixedly connected to a mounting seat, and a guide groove is opened on the outer surface of the mounting seat. The number of the guide grooves is several groups and distributed in a ring array. A slider is slidably connected to the inner side of the guide groove. The slider is a U-shaped structure, and a second positioning pin is embedded and fixedly connected to the inner side of the slider. The outer surface of the slider is fixedly connected to an elastic pull strip, and the elastic pull strip is fixedly connected to the inner surface of the guide groove at one end away from the slider.

[0015] Furthermore, a connecting plate is fixedly connected to a side of the outer surface of the bonding plate close to the driving rod, an elastic plate is fixedly connected to the outer surface of the connecting plate, a traction rod is rotatably connected to the outer surface of the second positioning pin, an end of the traction rod away from the second positioning pin penetrates to the outside of the elastic plate and is movably connected to the elastic plate, an end of the traction rod away from the second positioning pin is fixedly connected to the first positioning pin, and the number of the traction rods is several groups and is distributed corresponding to the elastic plates.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) This solution sets a tensioning assembly so that during the mat lamination process, the tensioning roller is in close contact with the surface of the mat, thereby applying appropriate pressure to the mat through the tensioning roller. When the length of the mat changes, the tension of the mat is always maintained within an appropriate range, thereby reducing the probability of wrinkles and hollows in the mat during the lamination process, improving the mat lamination effect and ensuring the tire processing quality. (2) This scheme can heat the pad cloth and the rubber ring by setting a pressing component, thereby improving the flexibility of the pad cloth and the rubber ring, so that the pad cloth and the rubber ring can fit more closely and reduce the phenomenon of air bubbles and hollowing between the pad cloth and the rubber ring. At the same time, the warm liquid can increase the weight of the pressure roller, thereby increasing the squeezing force between the pressure roller and the rubber ring, thereby ensuring the quality of the pad cloth laminating process; (3) This solution provides an expansion assembly to expand the rubber ring through an expansion plate, so that the rubber ring can remain in an expanded state while maintaining appropriate tension. By moving the expansion plate to different distances, the expansion plate can be combined into rings of different diameters, so that rubber rings of different sizes can be tightened and fixed, thereby effectively improving the application range of the tread pad fitting structure and meeting the pad processing needs of tires of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a top view of the overall structure of the present invention; Figure 4 For the present invention Figure 3 Middle AA section view; Figure 5 For the present invention Figure 3 Middle BB section view; Figure 6 For the present invention Figure 1 The enlarged schematic diagram at C in the middle; Figure 7 For the present invention Figure 4 The enlarged schematic diagram at D in the middle; Figure 8 For the present invention Figure 5 The enlarged schematic diagram at E in the middle; Fig. 9 For the present invention Figure 5 Enlarged schematic diagram at F in the middle.

[0019] Description of reference numerals: 11. Workbench; 12. Support plate; 13. Motor; 14. Driving rod; 15. Expansion plate; 16. Rubber ring; Tensioning assembly; 21, rotating shaft; 22, baffle plate; 23, swing rod; 24, support rod; 25, tensioning roller; 26, winding roller; Expansion assembly; 31, fixed seat; 32, movable seat; 33, first ear seat; 34, first pin shaft; 35, movable rod; 36, locking sleeve; 37, second pin shaft; 38, spiral groove; 39, second ear seat; Pressing assembly; 41, pad; 42, slide groove; 43, slide rod; 44, anti-slip groove; 45, cavity; 46, pressing roller; Compensation assembly; 51, notch; 52, movable pin; 53, fitting plate; 54, connecting plate; 55, elastic plate; 56, traction rod; 57, first positioning pin; 58, mounting seat; 581, guide groove; 59, slider; 591, second positioning pin; 592, elastic pull strip. DETAILED DESCRIPTION

[0020] The following is a detailed description of the invention by way of examples in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all of the embodiments. Example

[0021] See also Figures 1 to 9 A tire tread padding structure comprises a workbench 11, support plates 12 are symmetrically fixedly connected to the upper ends of the workbench 11 on both sides, a driving rod 14 is rotatably connected between two groups of the support plates 12, an expansion plate 15 is movably connected to the driving rod 14, and a rubber ring 16 is sleeved on the outer surface of the expansion plate 15; A tensioning assembly is provided between the two groups of support plates 12, and the tensioning assembly includes a winding portion and a tensioning portion, the winding portion includes a rotating shaft 21 fixedly connected to the support plate 12, a winding roller 26 is rotatably connected to the outer surface of the rotating shaft 21, a pad cloth 41 is wound on the outer surface of the winding roller 26, and the winding portion is used to roll up and store the pad cloth 41; The tensioning part includes a swing rod 23 rotatably connected to the rotating shaft 21, and the end of the swing rod 23 away from the rotating shaft 21 is fixedly connected to a support rod 24, and the outer surface of the support rod 24 is rotatably connected to a tensioning roller 25, and the tensioning roller 25 is in contact with the outer surface of the pad cloth 41. The tensioning part is used to adjust the tension of the pad cloth 41.

[0022] By adopting the above technical solution, when the tire tread pad 41 is bonded, the processed semi-finished rubber ring 16 is firstly sleeved on the outside of the expansion plate 15, and the driving rod 14 drives the expansion plate 15 to make a circular motion, thereby driving the rubber ring 16 to rotate through the expansion plate 15, and the winding part winds the pad 41 and stores it on the surface of the winding roller 26, and the rotating shaft 21 supports the winding roller 26 for rotation, and then one end of the pad 41 is bonded to the surface of the rubber ring 16, and as the rubber ring 16 rotates, the pad 41 will gradually cover the outside of the rubber ring 16, and at the same time, as the pad 41 is pulled, the winding roller 26 can be driven to rotate, thereby releasing the pad 41 on the surface of the winding roller 26, and the pad 41 is released. After being attached to the surface of the rubber ring 16, the tensioning part rotates and contacts with the surface of the padding cloth 41 through the tensioning roller 25, the support rod 24 rotationally supports the tensioning roller 25, and the two sets of swinging rods 23 can rotate around the rotating shaft 21 and lift and support the support rod 24. During the process of attaching the padding cloth 41, the tensioning roller 25 will keep in close contact with the surface of the padding cloth 41 under the action of the support rod 24 and its own gravity, so that appropriate pressure is applied to the padding cloth 41 through the tensioning roller 25. During the process of attaching the tire padding cloth 41, the tension of the padding cloth 41 is always maintained within an appropriate range, thereby reducing the probability of wrinkles and hollows in the padding cloth 41 during the attaching process, improving the attaching effect of the padding cloth 41 and ensuring the tire processing quality.

[0023] like Figures 1 to 3 As shown, a motor 13 is fixedly connected to the outer surface of the support plate 12 on the right side, and the left end of the output shaft of the motor 13 is fixedly connected to the driving rod 14. An expansion component is arranged on the outer side of the driving rod 14, and the driving rod 14 is movably connected to the expansion plate 15 through the expansion component. The number of the swing rods 23 is two groups and they are distributed in parallel, and the baffle plates 22 are fixedly connected to the left and right ends of the outer surface of the winding roller 26.

[0024] By adopting the above technical scheme, when the tire pad 41 is fitted, the workbench 11 is first fixed in an appropriate position, and the two groups of support plates 12 are fixedly supported by the workbench 11, and the support plates 12 are installed and fixed to the motor 13. When working, the motor 13 is started and operated, and the driving rod 14 is driven by the motor 13 to rotate synchronously, and the driving rod 14 drives the expansion plate 15 to rotate through the expansion component. The expansion component can expand the annular expansion plates 15 synchronously, so that the rubber ring 16 sleeved on the outside of the expansion plate 15 is kept in a taut state, which can effectively reduce the probability of the rubber ring 16 loosening or falling off during the processing of the tire pad 41, thereby improving the processing accuracy and stability of the tire tread, and the baffles 22 on both sides of the winding roller 26 can block and limit the pad 41 on the outer surface of the winding roller 26, thereby effectively controlling the position of the pad 41, and can also reduce the probability of offset and dislocation during the fitting process of the pad 41, thereby further improving the tread processing quality.

[0025] like Figure 1 , Figure 5 and Figure 8 As shown, the expansion assembly includes a fixed seat 31 fixedly connected to the outer surface of the driving rod 14, and the outer surface of the driving rod 14 is slidably connected to a movable seat 32. The outer surfaces of the fixed seat 31 and the movable seat 32 are both fixedly connected to a first ear seat 33, and the first ear seat 33 is fixedly connected to a first pin shaft 34, and the outer surface of the first pin shaft 34 is rotatably connected to a movable rod 35.

[0026] The movable rod 35 is rotatably connected to the second pin 37 at one end away from the first pin 34, and the outer surface of the second pin 37 is fixedly connected to the second ear seat 39, and the second ear seat 39 is fixedly connected to the expansion plate 15. The expansion plates 15 and the movable rods 35 are both in several groups and distributed in a ring array.

[0027] The expansion plate 15 is in an arc shape. A spiral groove 38 is formed on the outer surface of the driving rod 14 . The driving rod 14 is spirally connected to a locking sleeve 36 through the spiral groove 38 . The locking sleeve 36 is in rotational contact with the outer surface of the movable seat 32 .

[0028] By adopting the above technical solution, before processing the tire pad 41, first keep the motor 13 in a closed state, and keep the expansion plate 15 in a gathered state through the expansion component, then put the rubber ring 16 on the outside of the expansion plate 15, and then start the expansion component. At this time, the operator rotates the locking sleeve 36 on the outer surface of the drive rod 14, and the locking sleeve 36 is connected to the drive rod 14 through the spiral groove 38. During the rotation, it moves synchronously along the surface of the drive rod 14. During the movement of the locking sleeve 36, it will contact the surface of the movable seat 32 and drive the movable seat 32 to move synchronously. When the movable seat 32 moves to the side of the fixed seat 31, the movable seat 32 will drive the first ear seat 33 and the first pin shaft 34 on its surface to move synchronously during the movement. As the spacing between the movable seat 32 and the fixed seat 31 increases, the movable seat 32 moves synchronously. As the turning angle of the movable rod 35 gradually increases, the plurality of expansion plates 15 will synchronously move toward the side away from the driving rod 14, thereby expanding the rubber ring 16 through the expansion plates 15, so that the rubber ring 16 can maintain an expanded state while maintaining appropriate tension. By adjusting the turning angle of the movable rod 35, the expansion plates 15 can be moved to different distances, so that the expansion plates 15 can be combined into circular rings of different diameters, so that rubber rings 16 of different sizes can be tightened and fixed, thereby effectively improving the application range of the tread cloth bonding structure and meeting the cloth bonding processing needs of tires of different sizes.

[0029] like Figure 2 and Figure 4 As shown, a pressing assembly is provided on the upper side of the expansion plate 15, and the pressing assembly includes a slide groove 42 opened on the outer surface of the support plate 12, a slide rod 43 is slidably connected to the inner side of the slide groove 42, and a pressure roller 46 is rotatably connected to the outer surface of the slide rod 43, and the outer surface of the pressure roller 46 is in contact with the pad cloth 41.

[0030] The outer surface of the pressure roller 46 is provided with anti-skid grooves 44, which are distributed in a circular array and are semi-cylindrical. A cavity 45 is embedded inside the pressure roller 46, and the cavity 45 is filled with high-temperature liquid. A control valve is provided on the outer surface of the pressure roller 46.

[0031] By adopting the above technical solution, during the pressing process of the tread pad 41, a proper amount of warm liquid is filled into the cavity 45 inside the pressing roller 46 through the control valve, and the pressing roller 46 is heated by the warm liquid. The slide bar 43 supports the pressing roller 46 for rotation, and the slide groove 42 guides and supports the slide bar 43. The pressing roller 46 will be tightly attached to the surface of the pad 41 under the action of the slide bar 43 and its own gravity. Under the squeezing action of the pressure roller 46, the pad 41 will be more tightly attached to the surface of the rubber ring 16, and the warm liquid inside the cavity 45 can both heat the pad 41 and the rubber ring 1 6 is heated to increase the temperature, thereby improving the flexibility of the pad cloth 41 and the rubber ring 16, so that the pad cloth 41 and the rubber ring 16 can be more closely fitted, and the phenomenon of air bubbles and hollowing between the pad cloth 41 and the rubber ring 16 can be reduced. At the same time, the warm liquid can increase the weight of the pressure roller 46, thereby increasing the squeezing force between the pressure roller 46 and the rubber ring 16, and thus ensuring the quality of the pad cloth 41. The anti-skid groove 44 on the surface of the pressure roller 46 can increase the friction between the pressure roller 46 and the pad cloth 41 to a certain extent, and thus can further improve the pressing quality of the pad cloth 41.

[0032] like Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig. 9 As shown, a compensation component is provided on the outer surface of the expansion plate 15, and the compensation component includes a slot 51 opened on the surface of the expansion plate 15, and a movable pin 52 is fixedly connected to the inner surface of the slot 51, and a fitting plate 53 is rotatably connected to the outer surface of the movable pin 52, and the fitting plate 53 is arc-shaped and symmetrically distributed on both sides of the expansion plate 15.

[0033] The outer surface of the driving rod 14 is fixedly connected to a mounting seat 58, and a guide groove 581 is opened on the outer surface of the mounting seat 58. The number of the guide grooves 581 is several groups and distributed in a ring array. A slider 59 is slidably connected to the inner side of the guide groove 581. The slider 59 is a U-shaped structure. A second positioning pin 591 is embedded and fixedly connected to the inner side of the slider 59. An elastic pull strip 592 is fixedly connected to the outer surface of the slider 59. The elastic pull strip 592 is fixedly connected to the inner surface of the guide groove 581 at one end away from the slider 59.

[0034] The outer surface of the bonding plate 53 is fixedly connected to a connecting plate 54 near the driving rod 14, and the outer surface of the connecting plate 54 is fixedly connected to an elastic plate 55. The outer surface of the second positioning pin 591 is rotatably connected to a traction rod 56. The end of the traction rod 56 away from the second positioning pin 591 penetrates to the outside of the elastic plate 55 and is movably connected to the elastic plate 55. The end of the traction rod 56 away from the second positioning pin 591 is fixedly connected to the first positioning pin 57. The number of the traction rods 56 is several groups and is distributed corresponding to the elastic plates 55.

[0035] By adopting the above technical solution, when the expansion assembly drives the expansion plate 15 to expand outward, the spacing between each group of expansion plates 15 will also increase accordingly. If the spacing between the expansion plates 15 is too large, the rubber ring 16 on its surface will be wrinkled and uneven, which will affect the tire processing quality. For this reason, a compensation assembly is provided. When the expansion plate 15 is in a gathered state, the elastic plate 55 bends toward one side of the expansion plate 15. Under the elastic force of the elastic plate 55, the bonding plate 53 flips to the maximum angle. At this time, the bonding plate 53 and the expansion plate 15 are nearly vertical. Notches 51 are provided on both sides of the expansion plate 15. The notches 51 are used to The movable pin 52 is used for storage support, and the bonding plate 53 can rotate around the movable pin 52. When the expansion plate 15 gradually moves away from the driving rod 14, the expansion plate 15 drives the bonding plate 53 to move synchronously through the movable pin 52, and the bonding plate 53 drives the elastic plate 55 to move synchronously through the connecting plate 54. When the distance between the expansion plate 15 and the mounting seat 58 gradually increases, the elastic plate 55 movably supports the traction rod 56 through the first positioning pin 57. Driven by the elastic plate 55, the traction rod 56 will drive the slider 59 to slide along the inner side of the guide groove 581 through the second positioning pin 591. The slider 59 moves In the process, the elastic pull strip 592 will be stretched. After the slider 59 moves a certain distance, the guide groove 581 will prevent the slider 59 from sliding further. At this time, as the expansion plate 15 continues to move, the traction rod 56 stretches the elastic plate 55 through the first positioning pin 57, so that the elastic plate 55 gradually expands outward from the bent U-shaped state to a straight line. As the shape of the elastic plate 55 changes, the distance between the two ends of the elastic plate 55 will also increase. Under the action of the elastic plate 55, the connecting plate 54 will drive the bonding plate 53 to flip around the movable pin 52, so that the angle between the bonding plate 53 and the expansion plate 15 gradually becomes smaller. By flipping the bonding plate 53 into the gap between the expansion plates 15 and filling the gap between the expansion plates 15 with the bonding plate 53, the gap between the expansion plates 15 can be greatly reduced, making the circular ring formed by the expansion plate 15 and the bonding plate 53 tighter and firmer, thereby reducing the probability of wrinkles on the rubber ring 16 on the surface of the expansion plate 15, thereby effectively ensuring the bonding quality of the tread pad 41. After the work is completed, when the expansion plate 15 is folded, the slider 59 moves in the opposite direction and resets under the elastic force of the elastic pull strip 592, thereby driving the traction rod 56 to flip and reset through the movement of the slider 59.

[0036] Instructions for use: When performing the tire tread pad 41 bonding process, first keep the expansion plate 15 in a gathered state, and then put the rubber ring 16 on the outside of the expansion plate 15, and then the expansion assembly drives the expansion plate 15 to move synchronously to the side away from the drive rod 14, so that the rubber ring 16 is expanded by the expansion plate 15, so that the rubber ring 16 can be kept in an expanded state while maintaining appropriate tension, and then the motor 13 drives the drive rod 14 to rotate synchronously, and the drive rod 14 drives the expansion plate 15 to rotate. When the distance between the expansion plate 15 and the mounting seat 58 gradually increases, the connecting plate 54 will drive the bonding plate 53 to flip around the movable pin 52 under the action of the elastic plate 55, so that the bonding plate 53 is flipped to between the expansion plates 15. In the gap, the spacing between the expansion plates 15 is filled by the laminating plate 53, and then one end of the pad cloth 41 is laminated to the surface of the rubber ring 16. As the rubber ring 16 rotates, the pad cloth 41 will gradually wrap around the outside of the rubber ring 16. The tensioning roller 25 will keep in close contact with the surface of the pad cloth 41 under the action of the support rod 24 and its own gravity, so that appropriate pressure is applied to the pad cloth 41 through the tensioning roller 25. During the laminating process of the tire pad cloth 41, the tension of the pad cloth 41 is always maintained within an appropriate range. The pressure roller 46 will be tightly fitted to the surface of the pad cloth 41 under the action of the slide bar 43 and its own gravity. Under the squeezing action of the pressure roller 46, the pad cloth 41 will fit more closely to the surface of the rubber ring 16, thereby further improving the laminating quality of the pad cloth 41.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and application concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tire tread pad bonding structure, comprising a workbench (11), characterized in that: Support plates (12) are symmetrically fixedly connected to both sides of the upper end of the workbench (11); a driving rod (14) is rotatably connected between the two groups of the support plates (12); an expansion plate (15) is movably connected to the driving rod (14); and a rubber ring (16) is sleeved on the outer surface of the expansion plate (15); A tensioning assembly is provided between the two groups of support plates (12), the tensioning assembly comprising a winding portion and a tensioning portion, the winding portion comprising a rotating shaft (21) fixedly connected to the support plate (12), a winding roller (26) being rotatably connected to the outer surface of the rotating shaft (21), a pad cloth (41) being wound around the outer surface of the winding roller (26), and the winding portion being used to roll up and store the pad cloth (41); The tensioning portion comprises a swinging rod (23) rotatably connected to the rotating shaft (21); one end of the swinging rod (23) away from the rotating shaft (21) is fixedly connected to a support rod (24); the outer surface of the support rod (24) is rotatably connected to a tensioning roller (25); the tensioning roller (25) is in close contact with the outer surface of the pad cloth (41); and the tensioning portion is used to adjust the tension of the pad cloth (41).

2. A tire tread pad bonding structure as claimed in claim 1, characterized in that: A motor (13) is fixedly connected to the outer surface of the right support plate (12); the left end of the output shaft of the motor (13) is fixedly connected to the drive rod (14); an expansion assembly is arranged on the outer side of the drive rod (14); the drive rod (14) is movably connected to the expansion plate (15) via the expansion assembly; the swing rods (23) are provided in two groups and are distributed in parallel; and baffle plates (22) are fixedly connected to the left and right ends of the outer surface of the winding roller (26).

3. A tire tread pad bonding structure as claimed in claim 2, characterized in that: The expansion assembly comprises a fixed seat (31) fixedly connected to the outer surface of the driving rod (14); the outer surface of the driving rod (14) is slidably connected to a movable seat (32); the outer surfaces of the fixed seat (31) and the movable seat (32) are both fixedly connected to a first ear seat (33); the first ear seat (33) is fixedly connected to a first pin shaft (34); and the outer surface of the first pin shaft (34) is rotatably connected to a movable rod (35).

4. A tire tread pad bonding structure as claimed in claim 3, characterized in that: The movable rod (35) is rotatably connected to a second pin shaft (37) at one end away from the first pin shaft (34); a second ear seat (39) is fixedly connected to the outer surface of the second pin shaft (37); the second ear seat (39) is fixedly connected to the expansion plate (15); and the expansion plates (15) and the movable rods (35) are provided in a plurality of groups and are distributed in a ring array.

5. A tire tread pad bonding structure as claimed in claim 3, characterized in that: The expansion plate (15) is in an arc shape, a spiral groove (38) is formed on the outer surface of the driving rod (14), the driving rod (14) is spirally connected to a locking sleeve (36) via the spiral groove (38), and the locking sleeve (36) is in rotational contact with the outer surface of the movable seat (32).

6. A tire tread padding structure as claimed in claim 1, characterized in that: A pressing assembly is arranged on the upper side of the expansion plate (15), and the pressing assembly comprises a slide groove (42) opened on the outer surface of the support plate (12), a slide rod (43) is slidably connected to the inner side of the slide groove (42), and a pressure roller (46) is rotatably connected to the outer surface of the slide rod (43), and the outer surface of the pressure roller (46) is in close contact with the pad cloth (41).

7. A tire tread pad bonding structure as claimed in claim 6, characterized in that: The outer surface of the pressing roller (46) is provided with anti-skid grooves (44), the anti-skid grooves (44) are distributed in a circular array, the anti-skid grooves (44) are semi-cylindrical, a cavity (45) is embedded inside the pressing roller (46), the cavity (45) is filled with high-temperature liquid, and a control valve is provided on the outer surface of the pressing roller (46).

8. The tire tread pad bonding structure according to claim 1, characterized in that: The outer surface of the expansion plate (15) is provided with a compensation component, the compensation component comprising a notch (51) opened on the surface of the expansion plate (15), a movable pin (52) being fixedly connected to the inner surface of the notch (51), a bonding plate (53) being rotatably connected to the outer surface of the movable pin (52), the bonding plates (53) being arc-shaped and symmetrically distributed on both sides of the expansion plate (15).

9. A tire tread pad bonding structure as claimed in claim 8, characterized in that: The outer surface of the driving rod (14) is fixedly connected to a mounting seat (58), and the outer surface of the mounting seat (58) is provided with guide grooves (581). The number of the guide grooves (581) is a plurality of groups and they are distributed in a ring array. A slider (59) is slidably connected to the inner side of the guide groove (581), and the slider (59) is in a U-shaped structure. A second positioning pin (591) is embedded and fixedly connected to the inner side of the slider (59). An elastic pull strip (592) is fixedly connected to the outer surface of the slider (59), and the end of the elastic pull strip (592) away from the slider (59) is fixedly connected to the inner surface of the guide groove (581).

10. A tire tread pad bonding structure as claimed in claim 9, characterized in that: A connecting plate (54) is fixedly connected to a side of the outer surface of the bonding plate (53) close to the driving rod (14), an elastic plate (55) is fixedly connected to the outer surface of the connecting plate (54), a traction rod (56) is rotatably connected to the outer surface of the second positioning pin (591), an end of the traction rod (56) away from the second positioning pin (591) penetrates to the outside of the elastic plate (55) and is movably connected to the elastic plate (55), an end of the traction rod (56) away from the second positioning pin (591) is fixedly connected to the first positioning pin (57), and the number of the traction rods (56) is a plurality of groups and is distributed corresponding to the elastic plates (55).

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