A device for trimming rubber edge on the surface of a molded tire

Abstract

A device for trimming the rubber edge of a molded tire surface relates to the technical field of post-treatment of trimming of molded tires, comprising a horizontally arranged square middle seat, two lateral outer end faces of the square middle seat are respectively fixedly connected with a symmetrical first side extension plate and a second side extension plate, the square middle seat is respectively provided with a lifting and loading and unloading assembly, a rotating clamping assembly and a rubber edge cutting assembly, and a grinding and trimming assembly is provided between the first side extension plate and the second side extension plate. The present invention solves the problems of inconvenient processing and clamping, poor adaptability to the trimming of tires of different models, and a single trimming method, which affects the trimming effect, when the equipment in the traditional technology is used for trimming the rubber edge of a molded tire surface.

Description

Technical Field

[0001] The invention relates to the technical field of post-treatment of trimming of a molded tire, and in particular to a device for trimming the rubber edge on the surface of a molded tire. Background Art

[0002] Tires are circular elastic rubber products that roll on the ground and are installed on various vehicles or machines. They are usually installed on metal rims, can support the vehicle body, buffer external impacts, achieve contact with the road surface and ensure the driving performance of the vehicle.

[0003] The production of automobile tires consists of a series of technological processes, the main processes of which are: raw material processing, batching, raw rubber plasticizing, rubber mixing, cord canvas calendering, tread extrusion, tire component manufacturing, tire molding, green tire shaping and vulcanization.

[0004] Among them, tire vulcanization refers to placing the molded tire in a mold and achieving the optimal vulcanization degree by controlling the three related factors of temperature, pressure and time, so that the molded tire obtains the expected physical and mechanical properties.

[0005] From the process flow, the vulcanization process includes robot gripping the tire, mold installation, primary shaping, secondary shaping, mold closing and vulcanization, demolding, and finished product trimming. During the mold closing and vulcanization process, the tire tread needs to be pressed out with a pattern by heating and pressurizing. Due to the increase in temperature, the rubber will flow and deform, resulting in surface defects such as rubber edges and rubber columns remaining on the outer surface of the molded tire after demolding. The presence of these surface defects will destroy the uniformity of stress distribution inside the tire and reduce the physical and mechanical properties of the tire. Therefore, shearing and trimming the rubber edges on the surface of the molded tire is a necessary process in the tire vulcanization process.

[0006] Due to the special shape of the molded tire, the following problems often occur when the surface rubber edge is processed manually or with existing equipment:

[0007] 1. The tire processing clamping is inconvenient and the selection of clamping position is unreasonable, which leads to the deformation of the tire carcass during the clamping process and affects the trimming accuracy.

[0008] 2. The shapes of the rubber edges are different and the distribution is irregular, which increases the difficulty of trimming.

[0009] 3. The adaptability of tire repair for different models is poor.

[0010] 4. The trimming method is single, which affects the trimming effect.

[0011] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0012] In view of the defects in the prior art, the present invention provides a device for trimming the surface rubber edge of a molded tire, which is used to solve the problems of inconvenient processing and clamping, poor adaptability to trimming of tires of different models, and a single trimming method that affects the trimming effect when the equipment in the traditional technology is used for trimming the surface rubber edge of a molded tire.

[0013] To achieve the above object, the present invention provides the following technical solutions:

[0014] A device for trimming rubber edges on the surface of a molded tire comprises a horizontally arranged square middle seat, on two lateral outer end faces of which are respectively fixedly connected symmetrical first and second side extension plates, a lifting and loading and unloading assembly, a rotating clamping assembly and a rubber edge cutting assembly are respectively provided on the square middle seat, and a grinding and trimming assembly is provided between the first and second side extension plates.

[0015] As an optimized solution, a first limiting opening extending transversely is provided on one side of the upper surface of the first side extension plate, and a second limiting opening extending longitudinally is provided in the middle of the upper surface of the second side extension plate.

[0016] As an optimized solution, the grinding and trimming assembly includes a first sliding motor, which is fixed to the transverse outer wall of the first side extension plate. The end of the output shaft of the first sliding motor passes through the first side extension plate and is fixed to a transverse threaded rod, and the end of the transverse threaded rod is rotatably supported on the transverse inner wall of the first limit opening.

[0017] As an optimized solution, a first sliding seat is slidably mounted in the first limiting opening, the first sliding seat is arranged close to the longitudinal inner wall of the first limiting opening, and the transverse threaded rod passes through and is threadedly connected to the first sliding seat.

[0018] As an optimized solution, a transverse mounting frame is fixedly connected to the upper surface of the first sliding seat, and the transverse mounting frame is a U-shaped frame with a side opening. A first roller is rotatably provided inside the transverse mounting frame, and a first rotating motor is fixedly connected to the upper surface of the transverse mounting frame. The output shaft end of the first rotating motor passes downward through the transverse mounting frame and is fixedly connected to the center of the upper end surface of the first roller.

[0019] As an optimized solution, the grinding and trimming assembly also includes a second sliding motor, which is fixed to the longitudinal outer wall of the second side extension plate. The end of the output shaft of the second sliding motor passes through the second side extension plate and is fixed to a longitudinal threaded rod, and the end of the longitudinal threaded rod is rotatably supported on the longitudinal inner wall of the second limit opening.

[0020] As an optimized solution, a second sliding seat is slidably mounted in the second limiting opening, the second sliding seat is arranged closely against the transverse inner wall of the second limiting opening, and the longitudinal threaded rod passes through and is threadedly connected to the second sliding seat.

[0021] As an optimized solution, a longitudinal mounting frame is fixedly connected to the upper surface of the second sliding seat, and the longitudinal mounting frame is a U-shaped frame with a side opening. A second roller is rotatably provided inside the longitudinal mounting frame, and a second rotating motor is fixedly connected to the upper surface of the longitudinal mounting frame. The output shaft end of the second rotating motor passes downward through the longitudinal mounting frame and is fixedly connected to the center of the upper end surface of the second roller.

[0022] As an optimized solution, a rolling grinding belt is sleeved between the first roller and the second roller.

[0023] As an optimized solution, a circular groove is provided at the center of the upper surface of the square middle seat.

[0024] As an optimized solution, the lifting and loading and unloading assembly includes a horizontally arranged annular support plate, and four centrally symmetrical lifting and telescopic cylinders are fixedly connected to the inner bottom surface of the circular groove, and the upper telescopic end of each lifting and telescopic cylinder is respectively fixed to the lower surface of the annular support plate.

[0025] As an optimized solution, the rotating clamping assembly includes a motor mounting seat, which is a U-shaped seat with an opening facing downward, and the lower end of the motor mounting seat is fixedly connected to the middle part of the inner bottom surface of the circular groove.

[0026] As an optimized solution, a rotary drive motor is fixedly connected to the middle of the lower surface of the motor mounting seat, and the output shaft end of the rotary drive motor passes upward through the motor mounting seat and is fixedly connected to a cylindrical clamping seat.

[0027] As an optimized solution, a horizontal clamping telescopic cylinder is fixedly connected to each side end face of the cylindrical clamping seat, and a clamping block is fixedly connected to the telescopic end of the clamping telescopic cylinder.

[0028] As an optimized solution, two symmetrical motor mounting grooves are provided on one side of the lower surface of the square intermediate seat in the transverse direction.

[0029] As an optimized solution, the rubber edge cutting assembly includes two symmetrically arranged steering drive motors, which are fixedly connected to the inner top surface of the motor mounting groove. The output shaft end of each steering drive motor passes upward through the square middle seat and is fixedly connected to a steering knife seat. The steering knife seat is a vertically arranged U-shaped seat, and a rubber edge cutting knife is fixedly connected to each steering knife seat.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The lifting and loading and unloading assembly provided in the present invention can drive the annular support plate to lift up and down by controlling the extension and contraction of the lifting and telescopic cylinder, thereby driving the molded tire to be continuously transferred between different processing stations, thereby realizing an automated loading and unloading process.

[0032] The rotating clamping assembly provided in the present invention can clamp and position the tire from the inside after the molded tire is loaded, so as to avoid the clamping mechanism from hindering the subsequent tire surface finishing. Specifically, the rotating clamping assembly includes a cylindrical clamping seat, and each side end face of the cylindrical clamping seat is respectively fixed with a clamping telescopic cylinder, and the molded tire is supported and clamped from the inside by a clamping block provided at the end of the clamping telescopic cylinder to prevent deformation of the tire during the finishing process, so as to ensure the finishing accuracy. In addition, the rotating drive motor can drive the cylindrical clamping seat to rotate, thereby driving the molded tire in the clamping to rotate around the axis, so as to change the rubber edge finishing position in real time, so as to ensure the comprehensiveness of the finishing coverage.

[0033] The present invention provides two finishing methods, namely shearing and grinding, and the diversity of finishing is increased by cooperating the two methods to adapt to different finishing conditions.

[0034] The rubber edge cutting assembly provided in the present invention can realize adaptive grinding for tires of different models. Specifically, the rubber edge cutting assembly includes two sets of symmetrically arranged steering knife seats, on which rubber edge cutting knives are fixedly connected, and each steering knife seat can rotate around an axis under the control of a steering drive motor, so as to adjust the cutting angle of the rubber edge cutting knives to adapt to the outer surface shearing of tires of different diameters.

[0035] The grinding and finishing assembly provided in the present invention can perform secondary surface grinding on the sheared tire. Specifically, the grinding and finishing assembly includes a rolling grinding belt, the two ends of which are respectively sleeved on a first rotating roller and a second rotating roller, and the first rotating roller and the second rotating roller are respectively rotatably mounted on a transverse mounting frame and a longitudinal mounting frame, wherein the transverse mounting frame can slide along the first limit opening under the drive of a first sliding motor and a transverse threaded rod, and the longitudinal mounting frame can slide along the second limit opening under the drive of a second sliding motor and a longitudinal threaded rod, so as to change the position and use state of the rolling grinding belt, make it close to the outer surface of the molded tire, and increase the contact area between the rolling grinding belt and the molded tire, thereby improving the efficiency of grinding and finishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0037] Figure 1 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the main viewing direction;

[0038] Figure 2 A half-section schematic diagram of the internal structure of each component in the present invention in a top view;

[0039] Figure 3 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the side view direction;

[0040] Figure 4 It is a schematic diagram of the external overall structure of the present invention in the main viewing direction;

[0041] Figure 5 It is a schematic diagram of the external overall structure of the present invention in a top view;

[0042] Figure 6 It is a schematic diagram of the external overall structure of the present invention when viewed from the side.

[0043] In the figure: 1-square middle seat, 2-first side extension plate, 3-second side extension plate, 4-circular groove, 5-annular support plate, 6-lifting telescopic cylinder, 7-motor mounting seat, 8-rotation drive motor, 9-column clamping seat, 10-clamping telescopic cylinder, 11-clamping block, 12-motor mounting groove, 13-steering drive motor, 14-steering knife seat, 15-rubber edge cutter, 16-first limit opening, 17-second limit opening, 18-first sliding motor, 19-transverse threaded rod, 20-first sliding seat, 21-transverse mounting frame, 22-first roller, 23-first rotating motor, 24-second sliding motor, 25-longitudinal threaded rod, 26-second sliding seat, 27-longitudinal mounting frame, 28-second roller, 29-second rotating motor, 30-rolling grinding belt. DETAILED DESCRIPTION

[0044] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0045] like Figures 1 to 6 As shown, a device for trimming the rubber edge on the surface of a molded tire comprises a horizontally arranged square middle seat 1, on the two lateral outer end faces of which are respectively fixedly connected symmetrical first side extension plates 2 and second side extension plates 3, a lifting and loading and unloading assembly, a rotating clamping assembly and a rubber edge cutting assembly are respectively provided on the square middle seat 1, and a grinding and trimming assembly is provided between the first side extension plate 2 and the second side extension plate 3.

[0046] A circular groove 4 is opened at the center of the upper surface of the square middle seat 1. The lifting and loading and unloading components include a horizontally arranged annular support plate 5. Four centrally symmetrical lifting and telescopic cylinders 6 are fixedly connected to the inner bottom surface of the circular groove 4. The upper telescopic end of each lifting and telescopic cylinder 6 is respectively fixedly connected to the lower surface of the annular support plate 5.

[0047] The rotating clamping assembly comprises a motor mounting seat 7 , which is a U-shaped seat with an opening facing downwards, and the lower end of the motor mounting seat 7 is fixedly connected to the middle part of the inner bottom surface of the circular groove 4 .

[0048] A rotating drive motor 8 is fixedly connected to the middle part of the lower surface of the motor mounting seat 7. The end of the output shaft of the rotating drive motor 8 passes upward through the motor mounting seat 7 and is fixedly connected to a cylindrical clamping seat 9. A horizontal clamping telescopic cylinder 10 is fixedly connected to each side end face of the cylindrical clamping seat 9. A clamping block 11 is fixedly connected to the telescopic end of the clamping telescopic cylinder 10.

[0049] Two symmetrical motor mounting grooves 12 are horizontally opened on one side of the lower surface of the square middle seat 1. The rubber edge cutting assembly includes two symmetrically arranged steering drive motors 13. The steering drive motors 13 are fixedly connected to the inner top surface of the motor mounting groove 12. The output shaft ends of each steering drive motor 13 respectively pass upward through the square middle seat 1 and are fixedly connected to a steering knife seat 14. The steering knife seat 14 is a vertically arranged U-shaped seat. A rubber edge cutting knife 15 is fixedly connected to each steering knife seat 14.

[0050] A first limiting opening 16 extending transversely is formed on one side of the upper surface of the first side extension plate 2 , and a second limiting opening 17 extending longitudinally is formed in the middle of the upper surface of the second side extension plate 3 .

[0051] The grinding and trimming assembly includes a first sliding motor 18, which is fixedly connected to the transverse outer wall of the first side extension plate 2. The end of the output shaft of the first sliding motor 18 passes through the first side extension plate 2 and is fixedly connected to a transverse threaded rod 19. The end of the transverse threaded rod 19 is rotatably supported on the transverse inner wall of the first limit opening 16.

[0052] A first sliding seat 20 is slidably mounted in the first limiting opening 16 . The first sliding seat 20 is arranged close to the longitudinal inner wall of the first limiting opening 16 . The transverse threaded rod 19 passes through and is threadedly connected to the first sliding seat 20 .

[0053] A transverse mounting frame 21 is fixedly connected to the upper surface of the first sliding seat 20. The transverse mounting frame 21 is a U-shaped frame with a side opening. A first roller 22 is rotatably provided inside the transverse mounting frame 21. A first rotating motor 23 is fixedly connected to the upper surface of the transverse mounting frame 21. The output shaft end of the first rotating motor 23 passes downward through the transverse mounting frame 21 and is fixedly connected to the center of the upper end surface of the first roller 22.

[0054] The grinding and trimming assembly also includes a second sliding motor 24, which is fixedly connected to the longitudinal outer wall of the second side extension plate 3. The end of the output shaft of the second sliding motor 24 passes through the second side extension plate 3 and is fixedly connected to a longitudinal threaded rod 25. The end of the longitudinal threaded rod 25 is rotatably supported on the longitudinal inner wall of the second limit opening 17.

[0055] A second sliding seat 26 is slidably mounted in the second limiting opening 17 . The second sliding seat 26 is arranged close to the transverse inner wall of the second limiting opening 17 . The longitudinal threaded rod 25 passes through and is threadedly connected to the second sliding seat 26 .

[0056] A longitudinal mounting frame 27 is fixedly connected to the upper surface of the second sliding seat 26. The longitudinal mounting frame 27 is a U-shaped frame with a side opening. A second roller 28 is rotatably provided inside the longitudinal mounting frame 27. A second rotating motor 29 is fixedly connected to the upper surface of the longitudinal mounting frame 27. The output shaft end of the second rotating motor 29 passes downward through the longitudinal mounting frame 27 and is fixedly connected to the center of the upper end surface of the second roller 28.

[0057] A rolling grinding belt 30 is sleeved between the first roller 22 and the second roller 28 .

[0058] When the present invention is in use: first, the lifting and telescopic cylinder 6 is controlled to extend to drive the annular support plate 5 to rise as a whole, and then the molded tire to be polished is placed flat on the annular support plate 5; the clamping and telescopic cylinder 10 is controlled to extend, and the clamping block 11 is used to support and clamp the molded tire from the inside; the lifting and telescopic cylinder 6 is controlled to shorten to drive the annular support plate 5 to descend as a whole; the rotating drive motor 8 is started, and the rotating drive motor 8 drives the columnar clamping seat 9 to rotate, thereby driving the molded tire being clamped to rotate around the axis as a whole; the two steering drive motors 13 are started respectively, and the steering drive motor 13 drives the steering knife seat 14 to rotate, and the angle is adjusted by rotation so that the end of the rubber edge cutting knife 15 is close to the rotating molded tire to remove excess rubber edges. Rotational cutting; respectively start the first rotating motor 23 and the second rotating motor 29, the first rotating motor 23 drives the first rotating roller 22 to rotate, and the second rotating motor 29 drives the second rotating roller 28 to drive, thereby driving the rolling grinding belt 30 to roll in a circle; start the first sliding motor 18, the first sliding motor 18 drives the transverse threaded rod 19 to rotate, and drives the first sliding seat 20 to slide transversely along the first limit opening 16, start the second sliding motor 24, the second sliding motor 24 drives the longitudinal threaded rod 25 to rotate, and drives the second sliding seat 26 to slide longitudinally along the second limit opening 17, so that the rolling grinding belt 30 slides close to the circumferential outer surface of the molded tire, and performs a finishing and grinding process on it after the rubber edge is cut off.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A device for trimming rubber edges on the surface of a molded tire, characterized in that: It comprises a horizontally arranged square middle seat (1), wherein two lateral outer end surfaces of the square middle seat (1) are respectively fixedly connected with a symmetrical first side extension plate (2) and a second side extension plate (3), wherein the square middle seat (1) is respectively provided with a lifting and loading and unloading assembly, a rotating clamping assembly and a rubber edge cutting assembly, and a grinding and finishing assembly is provided between the first side extension plate (2) and the second side extension plate (3); A first limiting opening (16) extending transversely is provided on one side of the upper surface of the first side extension plate (2), and a second limiting opening (17) extending longitudinally is provided in the middle of the upper surface of the second side extension plate (3); The grinding and finishing assembly comprises a first sliding motor (18), the first sliding motor (18) is fixedly connected to the transverse outer wall of the first side extension plate (2), the end of the output shaft of the first sliding motor (18) passes through the first side extension plate (2) and is fixedly connected to a transverse threaded rod (19), and the end of the transverse threaded rod (19) is rotatably supported on the transverse inner wall of the first limit opening (16); A first sliding seat (20) is slidably mounted in the first limiting opening (16), the first sliding seat (20) being arranged closely against the longitudinal inner wall of the first limiting opening (16), and the transverse threaded rod (19) passing through and being threadedly connected to the first sliding seat (20); A transverse mounting frame (21) is fixedly connected to the upper surface of the first sliding seat (20), the transverse mounting frame (21) is a U-shaped frame with a side opening, a first rotating roller (22) is rotatably arranged in the transverse mounting frame (21), a first rotating motor (23) is fixedly connected to the upper surface of the transverse mounting frame (21), and a terminal end of an output shaft of the first rotating motor (23) passes downward through the transverse mounting frame (21) and is fixedly connected to the center of the upper end surface of the first rotating roller (22); The grinding and finishing assembly further comprises a second sliding motor (24), the second sliding motor (24) being fixedly connected to the longitudinal outer wall of the second side extension plate (3), the end of the output shaft of the second sliding motor (24) passing through the second side extension plate (3) and being fixedly connected to a longitudinal threaded rod (25), the end of the longitudinal threaded rod (25) being rotatably supported on the longitudinal inner wall of the second limiting opening (17); A second sliding seat (26) is slidably mounted in the second limiting opening (17), the second sliding seat (26) being arranged closely against the transverse inner wall of the second limiting opening (17), and the longitudinal threaded rod (25) passes through and is threadedly connected to the second sliding seat (26); A longitudinal mounting frame (27) is fixedly connected to the upper surface of the second sliding seat (26); the longitudinal mounting frame (27) is a U-shaped frame with a side opening; a second rotating roller (28) is rotatably arranged in the longitudinal mounting frame (27); a second rotating motor (29) is fixedly connected to the upper surface of the longitudinal mounting frame (27); a terminal end of an output shaft of the second rotating motor (29) passes downward through the longitudinal mounting frame (27) and is fixedly connected to the center of the upper end surface of the second rotating roller (28); A rolling grinding belt (30) is sleeved between the first rotating roller (22) and the second rotating roller (28).

2. The device for trimming rubber edges on the surface of a molded tire according to claim 1, characterized in that: A circular groove (4) is provided at the centre of the upper surface of the square middle seat (1).

3. The device for trimming rubber edges on the surface of a molded tire according to claim 2, characterized in that: The lifting and loading and unloading assembly comprises a horizontally arranged annular support plate (5), and four centrally symmetrical lifting and telescopic cylinders (6) are fixedly connected to the inner bottom surface of the circular groove (4), and the upper telescopic end of each lifting and telescopic cylinder (6) is respectively fixedly connected to the lower surface of the annular support plate (5).

4. The device for trimming rubber edges on the surface of a molded tire according to claim 2, characterized in that: The rotating clamping assembly comprises a motor mounting seat (7), the motor mounting seat (7) being a U-shaped seat with an opening facing downward, and the lower end of the motor mounting seat (7) being fixedly connected to the middle part of the inner bottom surface of the circular groove (4).

5. The device for trimming rubber edges on the surface of a molded tire according to claim 4, characterized in that: A rotary drive motor (8) is fixedly connected to the middle of the lower surface of the motor mounting seat (7), and the output shaft end of the rotary drive motor (8) passes through the motor mounting seat (7) upwards and is fixedly connected to a columnar clamping seat (9).

6. The device for trimming rubber edges on the surface of a molded tire according to claim 5, characterized in that: A horizontal clamping telescopic cylinder (10) is fixedly connected to each side end surface of the columnar clamping seat (9), and a clamping block (11) is fixedly connected to the telescopic end of the clamping telescopic cylinder (10).

7. The device for trimming rubber edges on the surface of a molded tire according to claim 1, characterized in that: Two symmetrical motor mounting grooves (12) are provided in a transverse direction on one side of the lower surface of the square middle seat (1).

8. The device for trimming rubber edges on the surface of a molded tire according to claim 7, characterized in that: The rubber edge cutting assembly comprises two symmetrically arranged steering drive motors (13), the steering drive motors (13) being fixedly connected to the inner top surface of the motor mounting slot (12), the output shaft end of each steering drive motor (13) passing upward through the square middle seat (1) and being fixedly connected to a steering knife seat (14), the steering knife seat (14) being a vertically arranged U-shaped seat, and a rubber edge cutting knife (15) being fixedly connected to each steering knife seat (14).

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