Tire centering clamp

Abstract

The application relates to a tire centering clamping device which comprises a base, a driving mechanism and four clamping arms. The top of the base is provided with at least one first guide rail and at least one second guide rail in parallel, and the base is provided with an accommodating gap in a hollow manner between the first guide rail and the second guide rail. The clamping arms are all perpendicular to the base, and one pair of the clamping arms can slide along the first guide rail, and the other pair of the clamping arms can slide along the second guide rail. The driving mechanism comprises at least one driving piece which is arranged on the side of the base far from the accommodating gap and is in transmission connection with at least one clamping arm. The driving piece is used for sliding the clamping arms along the first guide rail or the second guide rail, clamping and centering the tire between the clamping arms without invading the accommodating gap, and completely protecting the up-down and left-right spaces where the centering position of the tire is located, so that a jacking device, an appearance defect detection device or a code scanning device is arranged in the tire centering area to perform subsequent processing on the centered tire.

Description

Technical Field

[0001] This application belongs to the technical field of tire centering equipment, and specifically relates to a tire centering clamping device. Background Technology

[0002] As the only component in contact with the ground in vehicles such as motor vehicles and airplanes, tires play a crucial role in providing support, transmitting power and braking force, cushioning and filtering road vibrations, and ensuring driving safety and comfort. The structural integrity of the tire is key to ensuring these functions, and the purpose of visual inspections after tire manufacturing and repair is to maintain or extend this structural integrity. For example, visual inspection technology is used to detect tire defects. This technology involves transporting tires at fixed points using a conveyor system, with industrial cameras or X-ray machines positioned along the transport path to capture images of tire defects. However, the detection range of these visual inspection devices is usually limited, requiring the tire to accurately reach a preset position during transport, such as the center of the conveyor surface. Similarly, equipment used for repairing tire treads, trimming sidewall seams, and printing markings on the sidewall all involve centering during tire transport.

[0003] In existing technologies, common centering devices employ a parallel conveying mechanism in conjunction with the centering mechanism. A gear-driven rotating shaft drives the centering arm and centering wheel to swing, or a linkage and drive cylinder are used to bring the centering wheel together diagonally, pushing the tire to the conveying center. While this structure can achieve centering under ideal conditions, it has significant drawbacks in practical applications: as multiple clamping arms move towards the centering position to clamp the tire, the movement trajectory of the drive cylinder and linkage mechanism used to drive the clamping arms encroaches on the vertical and horizontal space of the tire's centering position. This severely limits the design and installation of auxiliary devices for tire appearance defect detection, such as inspection, trimming, or lifting equipment, at the centering position. Utility Model Content

[0004] Based on the aforementioned background technical needs, this application provides a tire centering clamping device to solve the problem that in the prior art, the clamping arm or the driving mechanism of the driving clamping arm easily occupies the vertical and horizontal space of the conveying path and the working space, which greatly limits the design and installation of tire appearance inspection or trimming equipment integrated at the centering position.

[0005] To achieve the above objectives, the technical solution of this application is as follows: A tire centering clamping device includes a base, a drive mechanism, and four clamping arms. At least one first guide rail and at least one second guide rail are arranged parallel to each other on the top of the base, and a receiving gap is provided between the first and second guide rails. Each clamping arm is perpendicular to the top of the base, with one pair of clamping arms capable of sliding along the first guide rail and another pair capable of sliding along the second guide rail. The drive mechanism includes at least one drive member, which is disposed on the side of the base away from the receiving gap and is drively connected to at least one of the four clamping arms. The drive member drives the clamping arms to slide along the first or second guide rail, clamping and centering the tire between the clamping arms.

[0006] Preferably, there are two second guide rails, which are spaced apart on one side of the first guide rail. The lower end of the clamping arm is provided with a sliding seat, one pair of which slides with the first guide rail, and the other pair slides with the two second guide rails. The driving mechanism further includes a transmission belt, at least four first guide wheels, at least four second guide wheels, and two third guide wheels. The third guide wheels are located at opposite ends of the second guide rails and are rotatably connected to the base. The first guide wheels are correspondingly located at both ends of the first guide rail and at the opposite ends of the second guide rails, and are rotatably connected to the base. The second guide wheels are symmetrically distributed circumferentially around the accommodating gap between the first and second guide rails and are rotatably connected to the base. Both ends of the transmission belt are respectively sleeved with the third guide wheels, and the sides of the first guide wheels are in contact with the inner side of the transmission belt. The sides of the second guide wheels are in contact with the outer side of the transmission belt. At least one side of each sliding seat is fixedly connected to the transmission belt. The output end of the driving component is fixedly connected to any one of the sliding seats.

[0007] Preferably, the drive mechanism further includes a tension adjustment section, at least a portion of which is in transmission cooperation with at least one of the first guide wheel, the second guide wheel, the third guide wheel, or the transmission belt, for driving at least a portion of the transmission belt to undergo elastic deformation in the horizontal direction to adjust the tension of the transmission belt.

[0008] Preferably, the first guide wheel includes a rotating shaft and a roller. One end of the rotating shaft is slidably engaged with the base, and the roller is rotatably engaged with the other end of the rotating shaft. A screw hole is provided on the side of the base. The tension adjustment part is an adjustment screw. One end of the adjustment screw passes through the screw hole and is rotatably connected to the rotating shaft. The thread on the side of the adjustment screw is threadedly engaged with the screw hole. Rotating the adjustment screw can drive the first guide wheel to move relative to the base so that at least a portion of the transmission belt can elastically deform in the horizontal direction.

[0009] Preferably, the driving component is selected from any one of a driving cylinder, an electric telescopic cylinder, and a servo electric cylinder, and the output end of the driving component is connected to any one of the clamping arms for transmission.

[0010] Preferably, the clamping force of the clamping arm can be adjusted.

[0011] Preferably, the moving speed of the clamping arm can be adjusted.

[0012] Preferably, the base is provided with a plurality of guide seats at intervals along one side of the first guide rail, and each guide seat is provided with a guide hole through it. The axis of the guide hole is parallel to the first guide rail, and the output end of the drive unit passes through the guide hole and is slidably connected to the guide hole.

[0013] Preferably, the clamping arm includes a support shaft and a centering roller. The lower end of the support shaft is slidably engaged with the first guide rail or the second guide rail, and the centering roller is disposed at the upper end of the support shaft and rotatably engaged with the support shaft.

[0014] By adopting the above technical solution, compared with the prior art, this application has at least the following beneficial effects: Sufficient clearance is provided between the moving trajectories of the clamping arms, which facilitates the installation of other devices such as lifting equipment, tire appearance defect detection equipment, and barcode scanning equipment at the top, bottom, left, and right of the tire's centering position on the roller conveyor for processing the centered tire. Furthermore, the drive unit, located outside the clearance, will not occupy or intrude into the space of the clearance during the clamping and centering process of each clamping arm, thus completely protecting the space above, below, left, and right of the tire's centering position, so as to facilitate subsequent processing of the centered tire by the aforementioned lifting equipment, tire appearance defect detection equipment, barcode scanning equipment, and other devices. Attached Figure Description

[0015] Figure 1 This is a partial isometric view of the tire centering clamping device in the embodiment.

[0016] Figure 2 This is a partially enlarged schematic diagram (A) of the tire centering clamping device in the embodiment.

[0017] Figure 3 This is a partial top view of the tire centering clamping device in the embodiment.

[0018] Figure 4 This is a partial sectional view EE of the tire centering clamping device in the embodiment (from the attached drawing). Figure 3 ).

[0019] Figure 5This is a schematic diagram of the assembly of the tire centering clamping device in the embodiment.

[0020] In the figure: base 10, first guide rail 11, second guide rail 12, sliding seat 13, limit clip 131, limit groove 14, screw hole 15, guide seat 16, guide hole 161, drive mechanism 20, drive component 21, connecting rod 211, pressure regulating valve 212, throttle valve 213, transmission belt 22, first guide wheel 23, rotating shaft 231, roller 232, second guide wheel 24, third guide wheel 25, adjusting screw 26, clamping arm 30, support shaft 31, centering roller 32, roller conveyor 40, conveying roller 41, lifting device 50. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of this application will be further described below with reference to the accompanying drawings of the embodiments, and this application is not limited to the following specific implementation methods.

[0022] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "inner," "outer," "left," "right," "front," "rear," "top," and "bottom" indicate directions or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] The following is in conjunction with the appendix Figure 1 To be continued Figure 5 The present application will be further described in detail with reference to specific embodiments.

[0024] This application discloses a tire centering clamping device (hereinafter referred to as "clamping device"), which can center the tires conveyed on the roller conveyor 40 and fix the tires at the axis of symmetry of the roller conveyor 40 for a period of time, so as to cooperate with other equipment set on the roller conveyor 40 to perform operations such as scanning, defect detection, tire lifting, sidewall trimming, and marking printing on the tires. The clamping device includes a base 10, a drive mechanism 20, and four clamping arms 30. The base 10 is disposed below the conveyor rollers 41 of the roller conveyor 40. At least one first guide rail 11 and at least one second guide rail 12 are arranged parallel to each other on the top of the base 10, corresponding to the gap between two adjacent conveyor rollers 41. The first guide rail 11 and the second guide rail 12 are parallel to each other. The base 10 has a hollowed-out accommodating gap between the first guide rail 11 and the second guide rail 12. In this embodiment, the accommodating gap can be used to set up a lifting device 50 that can lift the tire from above the roller conveyor 40, so that after the clamping device lifts the tire from above the roller conveyor 40, it can still ensure that the tire is in the center of the centering area, so as to facilitate the appearance inspection, tire hair trimming, and other operations of the tire in the limited state. In one embodiment, the four clamping arms 30 are all perpendicular to the top of the base 10, and one pair of clamping arms 30 can slide along the first guide rail 11, and the other pair of clamping arms 30 can slide along the second guide rail 12. Specifically, the lower end of the clamping arm 30 is provided with a sliding seat 13. One pair of sliding seats 13 is slidably disposed on the first guide rail 11, and another pair of sliding seats 13 is slidably disposed on the second guide rail 12. The sliding seats 13 can slide along the first guide rail 11 and the second guide rail 12 respectively.

[0025] In one embodiment, the drive mechanism 20 includes at least one drive element 21, which is one of a drive device capable of outputting power in a straight line, such as a drive cylinder, an electric telescopic cylinder, or an electric push rod. Specifically, the drive element 21 is disposed on the side of the base 10 away from the receiving gap. The sliding seat 13 is connected to the output end of the drive element 21 in a transmission engagement. The drive element 21 can drive the sliding seat 13 on the first guide rail 11 and the second guide rail 12 to converge towards the central axis of the roller conveyor 40, so that the four clamping arms 30 can center the tire. In the above embodiment, the number of drive elements 21 can be one, two, or four. When there is one or two drive elements 21, the drive element 21 needs to achieve synchronous transmission engagement with the four clamping arms 30 through a transmission mechanism to achieve synchronous movement of the clamping arms 30. When there are four drive elements 21, the four drive elements 21 can drive each clamping arm 30 to move towards the tire centering position.

[0026] In the above embodiments, to create a hollow effect in the middle of the base 10 to leave a accommodating gap, the base 10 is a hollow frame or spaced-apart base plates. In one embodiment, the base 10 includes at least two spaced base plates, which are arranged across the roller conveyor 40 along the axial direction of the conveyor roller 41 on a crossbeam below the roller conveyor 40. The first guide rail 11 and the second guide rail 12 are respectively arranged on the top of each base plate, and the gap between the two base plates is the accommodating gap. A tire lifting device can be installed in the accommodating gap (in a foreseeable embodiment, the lifting device includes a frame, a drive cylinder, and several rollers. The rollers are arranged on the frame and between the conveyor rollers 41 of the roller conveyor. The drive cylinder is located at the bottom of the frame, and at least a part of the drive cylinder can pass through the accommodating gap and drive the frame up and down, lifting the tires that reach the rollers above the rollers for inspection or trimming. Its specific structure can be improved according to the structure of the roller conveyor 40. This application only provides symbolic reference examples and does not elaborate on the specific structure of the tire lifting device).

[0027] Using this tire centering clamp device provides at least the following benefits: Sufficient clearance is provided between the moving trajectories of the clamping arms 30, which facilitates the installation of other devices such as lifting equipment, tire appearance defect detection equipment, and barcode scanning equipment on the roller conveyor 40 above, below, left, and right of the tire's centering position to process the centered tire. Furthermore, the drive unit 21, located outside the clearance, will not occupy or intrude into the space of the clearance during the process of driving each clamping arm 30 to clamp and center the tire, thus completely protecting the space above, below, left, and right of the tire's centering position, so as to facilitate subsequent processing of the centered tire by the aforementioned lifting equipment, tire appearance defect detection equipment, barcode scanning equipment, and other devices.

[0028] Based on the above embodiments, this application also provides some specific implementation methods to improve the above solutions.

[0029] For tire centering operations, all four clamping arms 30 need to move synchronously to the centering position to ensure accurate tire centering. However, a larger number of drive components means a more complex transmission mechanism or a more precise control system is required to control the synchronous movement of each drive component. This necessitates installing more equipment on the base to meet the requirements, making it difficult to ensure that the space for the accommodating clearance is not occupied or encroached upon. To facilitate a more sufficient accommodating clearance between the first guide rail 11 and the second guide rail 12, in one embodiment, see Appendix Figure 3The aforementioned second guide rail 12 consists of two sections, each with a length not exceeding half the length of the first guide rail 11. The two second guide rails 12 are spaced apart on one side of the first guide rail 11 and symmetrically distributed relative to the central axis of the roller conveyor 40. In this embodiment, the roller conveyor 40 employs segmented rollers to accommodate the gaps between the rollers for the lifting device 50. The aforementioned base 10 includes three spaced base plates, two of which are shorter and symmetrically distributed relative to the central axis of the roller conveyor 40. The longer base plate is fixed below the roller conveyor 40 parallel to the shorter base plates. The two second guide rails 12 are respectively positioned on the top of the two shorter base plates, and the first guide rail 11 is positioned on the top of the longer base plate. Four sliding seats 13 are located at the lower ends of the four clamping arms 30, with one pair of sliding seats 13 slidably connected to two of the second guide rails 12 and the other pair slidably connected to the first guide rail 11.

[0030] In addition, the aforementioned drive mechanism also includes a transmission belt 22, at least four first guide wheels 23, at least four second guide wheels 24, and two third guide wheels 25. In this embodiment, the number of first guide wheels 23 and second guide wheels 24 is preferably four each. The two third guide wheels 25 are respectively located at opposite ends of the two second guide rails 12 and are rotatably connected to the base 10. The two first guide wheels 23 are respectively located at both ends of the first guide rail 11 and are rotatably connected to the base 10. The other two first guide wheels 23 are distributed at opposite ends of the two second guide rails 12 and are rotatably connected to the base 10. The four second guide wheels 24 are symmetrically distributed circumferentially around the accommodating gap between opposite sides of the first guide rails 11 and the second guide rails 12 and are rotatably connected to the base 10. The rectangle formed by the line connecting the four second guide wheels 24 is located within the rectangle formed by the line connecting the four first guide wheels 23. The transmission belt 22 is ring-shaped. Both ends of the transmission belt 22 are respectively connected to the third guide wheel 25, and the side of the first guide wheel 23 is in frictional contact with the inner surface of the transmission belt 22; the side of the second guide wheel 24 is in frictional contact with the outer surface of the transmission belt 22, so that the transmission belt 22 is subjected to tension at the first guide wheel 23, the second guide wheel 24 and the third guide wheel 25.

[0031] Furthermore, the two pairs of sliding seats 13 on the first guide rail 11 are respectively fixedly connected to the transmission belt 22 on opposite sides; the other pair of sliding seats 13 on the second guide rail 12 are respectively fixedly connected to the transmission belt 22 on opposite sides; the output end of the drive member 21 is fixedly connected to any one of the sliding seats 13. In this embodiment, see the attached drawing. Figure 3On the first guide rail 11, a limiting clip 131 is fixed to the lower side of the left sliding seat 13. The limiting clip 131 can clamp the portion of the transmission belt 22 near the lower side of the first guide rail 11. A limiting clip 131 is fixed to the upper side of the right sliding seat 13. The limiting clip 131 can clamp the portion of the transmission belt 22 near the upper side of the first guide rail 11. In addition, on the second guide rail 12, a limiting clip 131 is fixed to the lower side of the left sliding seat 13. The limiting clip 131 can clamp the portion of the transmission belt 22 near the lower side of the second guide rail 12. A limiting clip 131 is fixed to the upper side of the right sliding seat 13. The limiting clip 131 can clamp the portion of the transmission belt 22 near the upper side of the second guide rail 12, thereby fixing the transmission belt 22 to each sliding seat 13. The aforementioned driving component 21 is an electric telescopic cylinder or a pneumatic cylinder. The driving component 21 is parallel to the first guide rail 11 and is distributed on the side of the first guide rail 11 away from the receiving gap. One end of the output shaft of the driving component 21 is fixedly connected to the sliding seat 13 on the left side of the first guide rail 11 through the connecting rod 211.

[0032] When using the clamping device of this embodiment, the initial position of the sliding seat 13 is located at both ends of the first guide rail 11 and the end of the second guide rail 12 that is separate from it. The initial state of the output shaft of the drive member 21 is the extended state. When the output shaft of the drive member 21 retracts, it drives the sliding seat 13 on the left side of the first guide rail 11 to move to the right. The sliding seat 13 causes the portion of the transmission belt 22 near the lower side of the first guide rail 11 to move to the right. Under the guidance of the first guide wheel 23, the portion of the transmission belt 22 near the upper side of the first guide rail 11 moves to the left, thereby driving the sliding seat 13 on the right side of the first guide rail 11 to move to the left. At the same time, the portion of the transmission belt 22 near the lower side of the second guide rail 12 moves to the right under the guidance of the third guide wheel 25, thereby driving the sliding seat 13 on the left side of the second guide rail 12 to move to the right. Similarly, the portion of the transmission belt 22 near the upper side of the right side of the second guide rail 12 moves to the left under the guidance of the third guide wheel 25 and the second guide wheel 24, thereby driving the sliding seat 13 on the right side of the second guide rail 12 to move to the left. This causes the two clamping arms 30 on the left and the two clamping arms 30 on the right of the central axis of the roller conveyor 40 to converge synchronously towards the central axis of the roller conveyor 40; and the aforementioned transmission belt 22 drives each sliding seat to move around the receiving gap under the guidance of each guide wheel, without immersing itself in the receiving gap during the entire process, so that there is enough space in the receiving gap to set up other equipment.

[0033] Based on the above embodiments, to ensure that the tension of the transmission belt 22 can continuously maintain the effect of synchronous transmission, the drive mechanism 20 further includes a tension adjustment unit. At least a portion of the tension adjustment unit is in transmission cooperation with at least one of the first guide pulley 23, the second guide pulley 24, the third guide pulley 25, or the transmission belt 22. The tension adjustment unit can drive at least a portion of the transmission belt 22 to undergo elastic deformation in the horizontal direction, thereby adjusting the tension of the transmission belt 22 so that it can always meet the requirement of driving the four clamping arms 30 to move synchronously.

[0034] In one embodiment, see Appendix Figure 4 The tension adjustment part is preferably an adjusting screw 26. The first guide wheel 23 includes a rotating shaft 231 and a roller 232. The side of the roller 232 is provided with a groove for fitting the transmission belt 22. The inner ring of the roller 232 is sleeved with the upper end of the rotating shaft 231 through a bearing to achieve rotational engagement. A limiting groove 14 is provided on the top of the base 10. The limiting groove 14 extends away from the central axis of the roller conveyor 40. The lower end of the rotating shaft 231 is slidably engaged with the limiting groove 14. A screw hole 15 is provided through the limiting groove 14 on the side of the base 10. One end of the screw hole 15 is connected to the limiting groove 14. A limiting hole is provided on the side of the rotating shaft 231 located in the limiting groove 14. One end of the adjusting screw 26 passes through the screw hole 15 and is rotatably engaged with the limiting hole of the rotating shaft 231. The limiting hole only supports the adjusting screw 26 to rotate relative to the limiting hole and cannot move horizontally. The side of the adjusting screw 26 is provided with a thread, which is threadedly engaged with the screw hole 15. When it is necessary to adjust the tension of the transmission belt 22 to meet the requirement of synchronous movement of the clamping arm 30, the adjusting screw 26 can be rotated to move it along the axial direction of the screw hole 15, thereby pulling the rotating shaft 231 to move along the limiting groove 14, causing the roller 232 of the first guide wheel 23 to move, so as to adjust the tension of the transmission belt 22.

[0035] In some embodiments, the adjusting screws 26 can be arranged in pairs. For example, if adjusting screws 26 are provided on opposite sides of the second guide rail 12, when adjusting the tension, the adjusting screws 26 on both sides of the second guide rail 12 are adjusted in opposite directions so that the distance between the first guide wheel 23 on the same straight line and the central axis of the roller conveyor 40 is equal.

[0036] Furthermore, the aforementioned drive component 21 is preferably selected from any one of a drive cylinder, an electric telescopic cylinder, and a servo electric cylinder. For example, for a drive cylinder, see Appendix Figure 2In one embodiment, the drive cylinder is parallel to the first guide rail 11 and is located on the side of the first guide rail 11 away from the receiving gap, and its output shaft is fixedly connected to any sliding seat 13 on the first guide rail 11 via a connecting rod 211; in another embodiment, the drive cylinder is located on the side of any second guide rail 12 away from the receiving gap, and its output shaft is fixedly connected to any sliding seat 13 on the second guide rail 12 via a connecting rod 211.

[0037] Furthermore, when centering tires of different sizes or materials is required, the clamping force of the clamping arm 30 can be adjusted to prevent excessive clamping force from damaging the tire or insufficient clamping force from causing centering failure. In one embodiment, a pressure regulating valve 212 is provided in the air intake (port A) of the drive cylinder. When it is necessary to adjust the clamping force according to different tires, the pressure of the drive cylinder pushing the piston inward is adjusted by the pressure regulating valve 212, so that the output force applied by the drive cylinder to the clamping arm 30 is more appropriate, which is conducive to stabilizing the tire and centering the tire, while preventing damage to the tire tread due to excessive pressure.

[0038] Furthermore, to precisely control the moving speed of the clamping arms 30 and ensure that each clamping arm 30 contacts the tire synchronously, in one embodiment, throttle valves 213 are respectively installed in the air intake (port A) and exhaust (port B) passages of the aforementioned drive cylinder. When it is necessary to adjust the clamping speed according to different tires, the throttle valve 213 in the air intake passage is adjusted to close the throttle orifice, thereby slowing down the retraction speed of the clamping arms 30, effectively limiting the speed at which the clamping arms 30 contact the tire, allowing the clamping arms 30 to contact the tire smoothly and gently, preventing the tire from being knocked out; the throttle valve 213 in the exhaust passage is adjusted to enlarge the throttle orifice, allowing the clamping arms 30 to open faster, thereby increasing the speed at which the clamping arms 30 return to their initial position, making the clamping and centering efficiency higher.

[0039] Furthermore, to ensure the output shaft of the aforementioned drive cylinder always moves in a straight line and to guarantee the stability of the driven sliding seat 13, the base 10 is provided with a plurality of guide seats 16 spaced apart along the side of the first guide rail 11 opposite to the second guide rail 12. Each guide seat 16 has a guide hole 161 extending through it, with the axial direction of the guide holes 161 parallel to the first guide rail 11. The output shaft of the drive cylinder passes through the guide holes 161 and is slidably connected to them. The guide seats 16 restrict and guide the movement of the output shaft, effectively preventing deformation or bending of the output shaft due to the reaction force of the sliding seat 13 on one side during frequent extension and retraction, thus ensuring that the sliding seat 13 can be stably pushed by the drive cylinder and extending the service life of each moving component.

[0040] To reduce tire tread wear caused by relative sliding between the tire and the clamping arm 30 during tire clamping, in one embodiment, the clamping arm 30 includes a support shaft 31 and a centering roller 32. The lower end of the support shaft 31 is fixedly connected to the sliding seat 13, and the centering roller 32 is sleeved on the support shaft 31 and rotatably engages with it. During the contact between the clamping arm 30 and the tire, the rotatable centering roller 32 not only reduces the probability of frictional damage to the tire tread but also dynamically guides the tire that is slightly off-center from the roller conveyor 40.

[0041] Based on the above-mentioned tire centering clamping device, the following effects can be basically achieved: the two pairs of clamping arms 30 are driven by a driving cylinder to stably and gently clamp the tire, thereby achieving effective tire centering; the moving parts of the driving cylinder, sliding seat 13 and driving mechanism 20 do not intrude into the accommodation gap between the moving paths of the clamping arms 30 during the movement process, so that there is sufficient space between the clamping arms 30 to install tire lifting equipment or other detection equipment. The tire centering clamping device has a reasonable layout and is suitable for converting the roller conveyor 40 into an automated tire inspection and trimming production line, which helps to promote the development of technologies such as automatic tire inspection and automatic trimming.

[0042] Obviously, the above embodiments of this application are merely examples for clearly illustrating this application, and are not intended to limit the implementation of this application. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tire centering clamping device for clamping and centering a tire, characterized in that, The device includes a base, a drive mechanism, and four clamping arms. At least one first guide rail and at least one second guide rail are arranged parallel to each other on the top of the base, with a receiving gap formed between the first and second guide rails. Each clamping arm is perpendicular to the top of the base, and one pair of clamping arms can slide along the first guide rail, while the other pair can slide along the second guide rail. The drive mechanism includes at least one drive member, which is located on the side of the base away from the receiving gap and is connected to at least one of the four clamping arms. The drive member drives the clamping arms to slide along the first or second guide rail, clamping and centering the tire between the clamping arms.

2. The tire centering clamping device according to claim 1, characterized in that, The second guide rail has two sections, spaced apart on one side of the first guide rail. The lower end of the clamping arm is provided with a sliding seat, one pair of which slides with the first guide rail, and the other pair slides with the two second guide rails. The driving mechanism further includes a transmission belt, at least four first guide wheels, at least four second guide wheels, and two third guide wheels. The third guide wheels are located at opposite ends of the second guide rails and are rotatably connected to the base. The first guide wheels are correspondingly located at both ends of the first guide rail and at the opposite ends of the second guide rails, and are rotatably connected to the base. The second guide wheels are symmetrically distributed circumferentially around the accommodating gap between the first and second guide rails and are rotatably connected to the base. Both ends of the transmission belt are respectively sleeved with the third guide wheels, and the sides of the first guide wheels are in contact with the inner side of the transmission belt. The sides of the second guide wheels are in contact with the outer side of the transmission belt. At least one side of each sliding seat is fixedly connected to the transmission belt. The output end of the driving component is fixedly connected to any one of the sliding seats.

3. The tire centering clamping device according to claim 2, characterized in that, The drive mechanism further includes a tension adjustment unit, at least a portion of which is in transmission cooperation with at least one of the first guide wheel, the second guide wheel, the third guide wheel, or the transmission belt, for driving at least a portion of the transmission belt to undergo elastic deformation in the horizontal direction to adjust the tension of the transmission belt.

4. The tire centering clamping device according to claim 3, characterized in that, The first guide wheel includes a rotating shaft and a roller. One end of the rotating shaft is slidably engaged with the base, and the roller is rotatably engaged with the other end of the rotating shaft. A screw hole is provided on the side of the base. The tension adjustment part is an adjustment screw. One end of the adjustment screw passes through the screw hole and is rotatably connected to the rotating shaft. The thread on the side of the adjustment screw is threadedly engaged with the screw hole. Rotating the adjustment screw can drive the first guide wheel to move relative to the base so that at least a portion of the transmission belt can elastically deform in the horizontal direction.

5. The tire centering clamping device according to claim 1, characterized in that, The driving component is selected from any one of a driving cylinder, an electric telescopic cylinder, and a servo electric cylinder, and the output end of the driving component is connected to any one of the clamping arms.

6. The tire centering clamping device according to claim 5, characterized in that, The clamping force of the clamping arm can be adjusted.

7. The tire centering clamping device according to claim 5, characterized in that, The movement speed of the clamping arm can be adjusted.

8. The tire centering clamping device according to claim 5, characterized in that, The base is provided with a plurality of guide seats at intervals along one side of the first guide rail. Each guide seat is provided with a guide hole through it. The axis of the guide hole is parallel to the first guide rail. The output end of the drive unit passes through the guide hole and is slidably connected to the guide hole.

9. The tire centering clamping device according to claim 1, characterized in that, The clamping arm includes a support shaft and a centering roller. The lower end of the support shaft is slidably engaged with the first guide rail or the second guide rail, and the centering roller is disposed at the upper end of the support shaft and rotatably engaged with the support shaft.

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