A tire uniformity testing machine

Abstract

This utility model discloses a tire uniformity testing machine. A conveyor belt lifting mechanism is mounted on the equipment frame, and a conveyor belt is mounted on the lifting mechanism. Testing stations and pre-processing stations are located on both sides of the equipment frame. A uniformity testing platform is mounted on one side, and a load-loading mechanism is installed next to the platform. A clamp is installed on the platform. An upper rim lifting mechanism is installed above the testing station and is side-mounted on the equipment frame. A tire unloading mechanism is located at the bottom, and an upper clamp is mounted on top of it. The upper and lower clamps cooperate for floating clamping, simultaneously achieving horizontal movement, centering, anti-collision, anti-fall, and clutch functions. A tire centering mechanism, a tire lubrication mechanism, and an inflation system are installed at the pre-processing station. This utility model uses a clamp with a higher rigidity structure, and the external uniformity testing platform and side-mounted upper clamp layout effectively improve the balance of both sides of the equipment, reduce the failure rate of multi-station linkage, and make the equipment operation more reliable.

Description

Technical Field

[0001] This utility model relates to the field of uniformity detection technology, and specifically to a tire uniformity detection machine. Background Technology

[0002] With the advancement of the automotive industry, both large transport vehicles, including trucks, and smaller vehicles like cars, have higher requirements for ride comfort and safety. Tire uniformity and evenness directly affect phenomena such as vibration and sway during vehicle operation; therefore, the requirements for tire uniformity and evenness are constantly increasing. These higher performance requirements necessitate more precise testing equipment.

[0003] Currently, there are no mature online tire uniformity testing machines in China. Tire manufacturers still rely on imported equipment for uniformity testing, and the imported equipment currently in use has the following problems: 1. Fixture accuracy depends on high-precision machining, resulting in high manufacturing costs; 2. The core testing station of the equipment is surrounded by a frame, which makes it difficult to maintain. Maintenance personnel need to crawl into the narrow space to perform maintenance work, which is quite dangerous. 3. Imported equipment consists of multiple independent workstations, resulting in poor integration and a large footprint; 4. Because the workstations are independent, the equipment relocation process is cumbersome; 5. The use of hydraulic cylinders to resist the reaction force of tire inflation makes the equipment prone to hydraulic oil leakage; 6. The hydraulic system needs to be in continuous operation, resulting in high energy consumption. Utility Model Content

[0004] In order to solve the problems existing in the background art, the present invention provides a tire uniformity testing machine.

[0005] This utility model is a tire uniformity testing machine with a new architecture, which aims to fill the gap in domestic equipment. At the same time, it adopts a more rigid clamp, an innovative equipment architecture, and a highly integrated equipment layout to solve the shortcomings of current imported equipment.

[0006] The technical solution adopted in this utility model is: It includes an equipment frame, a conveyor line, a testing station, and a pre-processing station; the line lifting mechanism is installed in the middle of the equipment frame, and a conveyor line for transporting test tires is installed on the line lifting mechanism.

[0007] A test station is arranged on one side of the equipment frame. The test station is equipped with a tire removal mechanism, an upper rim lifting mechanism, a uniformity test platform, an upper clamp, and a lower clamp. A uniformity test platform is located below the test station and is mounted on one side of the equipment frame. A main shaft is located inside the uniformity test platform, and a lower clamp for connecting the lower end of the test tire is mounted on the platform. An upper rim lifting mechanism is located above the test station and is side-mounted on the equipment frame on the same side as the uniformity test platform. A tire removal mechanism is located at the bottom of the upper rim lifting mechanism, and an upper clamp for connecting the upper end of the test tire is mounted on the upper rim lifting mechanism. The upper and lower clamps are connected to form a tire testing clamp. This tire testing clamp is used for floating clamping and simultaneously provides horizontal movement, centering, anti-collision, anti-fall, and clutch functions.

[0008] A pre-processing station is arranged at the bottom of the other side of the equipment frame. A tire centering mechanism, a tire lubrication mechanism, and an inflation system are installed at the pre-processing station. The tire lubrication mechanism is arranged on the conveyor line, and a tire centering mechanism is arranged to the side of the tire lubrication mechanism. An inflation system for inflating the test tires is installed on the equipment frame above the pre-processing station.

[0009] The load loading mechanism includes a load loading frame, load wheels, and force sensors. The load loading frame is installed on one side of the uniformity test bench and is slidably connected to the uniformity test bench relative to or away from it via a high-rigidity linear slide rail and a lead screw. The lead screw is driven by a drive motor to move the load loading frame back and forth on the uniformity test bench. The load loading frame is equipped with load wheels, which are used to contact the test tire on the uniformity test bench. The load wheels are connected to the load loading frame via a force sensor at the top and bottom.

[0010] The force sensor is a two-dimensional force sensor that can simultaneously measure forces in both horizontal and vertical directions. The load wheel is equipped with a bearing that allows it to rotate freely.

[0011] The uniformity test platform is fixed to the base plate of the equipment frame. The lower clamp is installed on the front side of the test platform and is driven to rotate by a motor also fixed to the side of the test platform. The load loading frame is installed on the uniformity test platform and connected to the platform via a high-rigidity linear slide rail and a lead screw. The lead screw can be driven by a drive motor to move the load loading frame back and forth on the uniformity test platform. The load wheel is connected to the load loading frame via a force sensor at the top and bottom. This force sensor is a two-dimensional force sensor that can simultaneously measure forces in both horizontal and vertical directions. The load wheel has a bearing installed inside, allowing it to rotate freely. The upper rim lifting mechanism is installed on the upper side of the equipment frame via a guide rail and can move up and down via a motor driven by the upper rim lifting mechanism to move the upper clamp to a specified coordinate.

[0012] The lifting mechanism includes a lifting component, an adjusting component, and a conveyor mounting base. The lifting component is mounted on the equipment frame, the adjusting component is mounted on the upper part of the lifting component, the conveyor mounting base is mounted on the adjusting component, and two conveyor lines are mounted on the conveyor mounting base. The lifting component drives the adjusting component, the conveyor mounting base, and the conveyor lines to move up and down together. The adjusting component drives the two conveyor lines on the conveyor mounting base to move horizontally closer to each other or further apart.

[0013] A camera is installed on the equipment frame directly above the tire lubrication mechanism, and tire centering mechanisms are installed on the equipment frames on both sides above the tire lubrication mechanism. The tire centering mechanism includes a cylinder, a long connecting rod, a short connecting rod, a bearing seat, and two centering modules. The two centering modules are respectively installed on the equipment frames on both sides above the tire lubrication mechanism. Each centering module includes two gear arm assemblies. Each gear arm assembly is mainly composed of an arm and a gear at one end of the arm, which are fixedly connected. The gears of the two gear arm assemblies in the same centering module mesh with each other. The cylinder is installed on the equipment frame. The piston rod of the cylinder is connected to the gear of one gear arm assembly in one of the centering modules. An L-shaped bearing seat is hinged to the gear of one gear arm assembly in the other centering module. The gear of the other gear arm assembly in one of the centering modules is connected to the bearing seat synchronously via the long connecting rod. The bearing seat is connected to the gear of the other gear arm assembly in the other centering module synchronously via the short connecting rod.

[0014] The tire removal mechanism includes a tire removal pressure plate, a tire removal claw width adjustment assembly, tire removal claws, and a lifting cylinder. The lifting cylinder is fixed on the upper rim lifting mechanism. The piston rod of the lifting cylinder is fixedly connected to the tire removal pressure plate. The tire removal claw width adjustment assembly and the two tire removal claws are both installed on the tire removal pressure plate. The tire removal claw width adjustment assembly is connected to the two tire removal claws respectively.

[0015] The upper rim lifting mechanism is a device mechanism equipped with a motor and controlled by the motor to move up and down along the direction of gravity. The lower clamp includes a lower rim coaxially fixedly mounted outside the main shaft. During the uniformity test, the test tire is clamped between the upper rim and the lower rim of the upper clamp.

[0016] The upper clamp includes an upper clamp mounting plate, a positioning adjustment plate, a collision buffer plate, a horizontal adjustment seat, a center adjustment seat, a collision buffer spring, a clamp unlocking cylinder, a parallel gripper, an upper clamp clutch ring, an upper clamp mandrel, an upper wheel rim, a clamp lock, an unlocking pressure head, a locking button, and a drive shaft. The upper clamp mounting plate is fixedly mounted on the upper wheel rim lifting mechanism. The upper clamp mounting plate, the positioning adjustment plate, and the collision buffer plate are arranged sequentially from bottom to top at intervals, and are equipped with horizontal adjustment seats, center adjustment seats, and collision buffer springs for leveling, centering, and fall prevention. The bottom surface of the positioning adjustment plate can be horizontally moved relative to the upper clamp mounting plate via the horizontal adjustment seats at each corner. The horizontal adjustment seats are used to adjust the horizontal posture of the positioning adjustment plate relative to the upper clamp mounting plate, so that the positioning adjustment plate is horizontally parallel to the lower clamp and the test tire. Each corner of the top surface of the positioning adjustment plate is equipped with a center adjustment seat and bolts. The center adjustment seats are used to adjust the horizontal movement of the positioning adjustment plate relative to the upper clamp mounting plate, so that the center of the positioning adjustment plate is aligned with the lower clamp and the test tire below. The collision buffer plate is elastically mounted on the positioning adjustment plate by collision buffer springs at each corner. The floating interval distance of the collision buffer plate relative to the upper clamp mounting plate is adjusted by the collision buffer springs when the upper wheel rim lifting mechanism is working. A parallel gripper is fixedly installed at the lower end of the collision buffer plate. After the lower end of the parallel gripper passes downward through the upper clamp mounting plate, an upper clamp clutch ring is installed. The upper clamp clutch ring is used to clamp the upper clamp spindle. At the same time, an upper clamp anti-fall ring is fixedly installed at the lower end of the parallel gripper. The top end of the upper clamp spindle is arranged on the step formed by the anti-fall ring and is restricted from moving downward. The support ring is installed on the lower side of the upper clamp mounting plate. The support ring and the upper clamp spindle are circumferentially connected by a bearing clearance fit. The clamp unlocking cylinder is fixedly installed on the collision buffer plate. The lower end of the piston rod of the clamp unlocking cylinder passes through the collision buffer plate downwards and is then fixedly connected to the upper end of the unlocking pressure head in the central through hole inside the parallel gripper. The clamp unlocking cylinder drives the unlocking pressure head to move up and down in the central through hole inside the parallel gripper. The upper clamp spindle has a central through hole, in which a drive shaft is installed. The upper wheel rim is coaxially fixedly fitted outside the upper clamp spindle. The upper end of the drive shaft extends out of the central through hole of the upper clamp spindle and is fixedly installed with a locking button. The locking button is used to make pressure contact with the unlocking pressure head. The middle part of the drive shaft is connected to the central through hole of the upper clamp spindle through a locking spring. The lower end of the drive shaft passes through the central through hole of the upper clamp spindle and is installed with a clamp lock. The lower ends of the upper clamp spindle and the drive shaft pass through the lower wheel rim of the lower clamp and extend into the central through hole of the main shaft. They are fixedly connected by locking spring and clamp lock.

[0017] A non-through groove is provided on the top surface of the upper clamp mounting plate. A horizontal adjustment seat is embedded in the groove. The horizontal adjustment seat is mainly composed of two ring blocks that are connected by a threaded rotation. The lower ring block is embedded in the groove, and the top surface of the upper ring block is connected to the bottom surface of the positioning adjustment plate.

[0018] A non-through blind hole is provided on the top surface of the positioning adjustment plate. A center adjustment seat is embedded in the blind hole. The lower end of the center adjustment seat is provided with a boss. The boss is rotatably embedded in the blind hole, so that the center adjustment seat can rotate around its own central axis in the blind hole. A waist-shaped groove is provided in the middle of the center adjustment seat, which is vertically through. The bolt passes downward through the waist-shaped groove and then passes through the positioning adjustment plate, the horizontal adjustment seat, and the upper clamp mounting plate in sequence before being threaded onto the upper rim lifting mechanism.

[0019] The collision buffer spring is fitted over the spring bolt and located on the collision buffer plate. The spring bolt passes downward through the collision buffer spring and then moves through the collision buffer plate before being threaded into the threaded hole on the positioning adjustment plate. A collision detection sensor is installed between the collision buffer plate and the positioning adjustment plate. The collision detection sensor detects the distance between the collision buffer plate and the positioning adjustment plate in real time. When the distance detected by the collision detection sensor in real time is greater than a preset distance threshold, the collision detection sensor generates a signal to control the motor in the upper rim lifting mechanism to stop working, that is, to drive the upper rim lifting mechanism to stop descending.

[0020] A parallel pneumatic gripper is fixedly installed at the lower end of the collision buffer plate. The parallel pneumatic gripper passes downward through the upper clamp mounting plate. The lower edge of the parallel pneumatic gripper is connected to the upper clamp clutch ring, which is composed of multiple clutch blocks. The parallel pneumatic gripper is used to drive the multiple clutch blocks to move closer to or away from the center. The upper clamp clutch ring is used to clamp the upper end of the upper clamp spindle. At the same time, an upper clamp anti-fall ring composed of multiple anti-fall blocks is set in the middle of the lower end of the parallel pneumatic gripper. The upper end of the upper clamp spindle is provided with an outer flange with a larger diameter. Each anti-fall block is provided with a horizontal flange at its lower end. The horizontal flange extends towards the center and supports the lower step surface of the outer flange at the top of the upper clamp spindle, so that the downward movement of the upper clamp spindle is limited.

[0021] This utility model provides a tire testing fixture formed by the cooperation of the upper and lower clamps. It has functions such as leveling, centering, anti-collision, anti-fall, and clutch, and can also control and adjust the cooperation.

[0022] A locking spring is fitted on the top of the drive shaft connected to the bottom of the locking button. The central through hole of the upper clamp spindle is a stepped hole that is larger at the top and smaller at the bottom. The upper and lower ends of the locking spring are elastically connected to the stepped surface between the locking button and the drive shaft, and the stepped surface of the stepped hole of the upper clamp spindle, respectively. At the same time, the lower ends of the upper clamp spindle and the drive shaft are used to pass through the lower rim of the lower clamp and extend into the central through hole of the main shaft. The wall of the central through hole of the main shaft is provided with a toothed groove structure. The lower end of the drive shaft is set as a conical pendant that is smaller at the top and larger at the bottom. The bottom of the central through hole of the upper clamp spindle is opened into a conical cavity that matches the shape of the pendant. The conical pendant is embedded in the conical cavity. The wall of the central through hole of the upper clamp spindle outside the conical cavity is opened into a horizontally penetrating radial channel. The clamp lock is installed in the radial channel. The clamp lock can move horizontally in the radial channel. The inner end of the clamp lock is set as a conical surface for contacting the conical pendant. The outer end of the clamp lock is provided with a toothed groove structure that matches the sawtooth structure of the wall of the central through hole of the main shaft. Furthermore, the toothed structure of the central through hole wall of the main shaft is set as a multi-level toothed structure with different heights along the vertical axis. By adjusting the locking button and the different axial positions of the transmission shaft extending into the central through hole of the main shaft, the clamp lock is engaged in the toothed structure at different heights, thereby adjusting the distance between the upper clamp and the lower clamp, so as to achieve different clamping forces and clamping of test tires of different sizes.

[0023] The beneficial effects of this utility model are: 1. Use a fixture with higher rigidity: The fixture has high rigidity and high strength, which can make the test results more repeatable and accurate.

[0024] 2. Innovative equipment architecture: The equipment of this utility model adopts an external test bench and a side-mounted upper clamp (15) layout, which effectively improves the ease of maintenance and safety of the equipment.

[0025] 3. Highly integrated equipment layout: This utility model adopts a highly integrated innovative structure, integrating the test bench, lubrication station, centering station, etc. together, effectively reducing the equipment footprint, reducing the failure rate of multi-station linkage, reducing production costs, making the equipment operation more reliable, and facilitating equipment handling and transportation.

[0026] 4. Replacing the hydraulic system with a mechanical lock avoids a series of disadvantages associated with hydraulic systems, such as oil leaks, environmental pollution, difficult maintenance, high energy consumption, and high cost. 5. The upper support ring structure provides greater rigidity and better testing stability compared to the lateral force applied by hydraulic rods. Attached Figure Description

[0027] Figure 1 This is a 3D view of the equipment.

[0028] Figure 2 This is the main view of the device.

[0029] Figure 3 This is a three-dimensional view of the uniformity test platform.

[0030] Figure 4 This is a detailed structural drawing of the lifting section of the upper clamp.

[0031] Figure 5 Detailed drawing of the fixture above.

[0032] Figure 6 for Figure 5 CC section view.

[0033] Figure 7 Detailed drawing of the upper and lower clamps for mold assembly.

[0034] Figure 8 This is a diagram of the lifting mechanism for the linear body.

[0035] Figure 9 This is a top view of the tire centering mechanism.

[0036] Figure 10 This is a diagram of the tire unloading mechanism.

[0037] Figure 11 This is one of the diagrams showing the fit and arrangement of the upper and lower furniture in this utility model.

[0038] Figure 12 This is the second diagram showing the arrangement of the upper and lower furniture in this utility model.

[0039] Figure 13 for Figure 12 A magnified view of a portion of the image.

[0040] In the figure: uniformity test bench (1), upper rim lifting mechanism (2), equipment frame (3), line lifting mechanism (4), tire centering mechanism (5), electrical control cabinet (6), tire lubrication mechanism (7), inflation system (8), tire unloading mechanism (9), conveyor line (10), test tire (11), upper clamp (12), lower clamp (13); Load loading frame (14), load wheel (15), force sensor (16); Lifting assembly (401), pitch adjustment assembly (402), conveyor line mounting base (403); Gear (501), cylinder (502), long connecting rod (503), short connecting rod (504), bearing housing (505), and retaining arm (506); Tire removal pressure plate (901), tire removal claw width adjustment assembly (902), tire removal claw (903), lifting cylinder (904). Upper clamp mounting plate (1201), positioning adjustment plate (1202), collision buffer plate (1203), horizontal adjustment seat (1204), center adjustment seat (1205), collision buffer spring (1206), clamp unlocking cylinder (1207), parallel gripper (1208), upper clamp clutch ring (1209), upper clamp anti-fall ring (1210), upper clamp spindle (1211), upper wheel rim (1212), clamp lock (1213), unlocking pressure head (1214), locking button (1215), lock extension spring (1216), drive shaft (1217), support ring (15161218); Lower rim (1301). Detailed Implementation

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] This utility model describes a novel tire uniformity testing machine, which includes a machine frame 3, a conveyor line 10, a testing station, and a pre-processing station; more specifically as follows: Figure 1 and Figure 2 As shown, it includes a uniformity test bench 1, an upper rim lifting mechanism 2, an equipment frame 3, a line lifting mechanism 4, a tire centering mechanism 5, a tire lubrication mechanism 7, an inflation system 8, a tire unloading mechanism 9, a conveyor line 10, an upper clamp 12, and a lower clamp 13.

[0043] like Figure 1 and Figure 2 As shown, the equipment frame 3 is fixed to the ground, and the line lifting mechanism 4 is installed in the middle of the equipment frame 3. The line lifting mechanism 4 is equipped with a conveyor line 10 for conveying the test tire 11. The conveyor line 10 is installed through the line lifting mechanism 4. like Figure 1 and Figure 2 As shown, a test station is arranged on one side of the equipment frame 3 and the conveyor line 10. The test station is equipped with a tire unloading mechanism 9, an upper rim lifting mechanism 2, a uniformity test bench 1, an upper clamp 12, and a lower clamp 13. The uniformity test bench 1 is located below the test station, mounted on one side of the equipment frame 3 and extending upwards through the conveyor line 10. A main shaft 102 is located inside the uniformity test bench 1. A load loading mechanism is located beside the uniformity test bench 1. A lower clamp 13 is installed on the uniformity test bench 1 to connect the lower end of the test tire 11. The upper rim lifting mechanism 2 is located above the test station, mounted sideways on the equipment frame 3 on the same side as the uniformity test bench 1. Figure 4As shown, the bottom of the upper rim lifting mechanism 2 is provided with a tire removal mechanism 9 for removing the test tire 11 from the uniformity test platform 1. The bottom of the upper rim lifting mechanism 2 is equipped with an upper clamp 12 for connecting the upper end of the test tire 11. The upper clamp 12 and the lower clamp 13 are connected to form a tire test clamp. The tire test clamp is used for floating clamping and simultaneously realizes the functions of horizontal movement, centering, anti-collision, anti-fall and clutch. A pre-processing station is arranged at the bottom of the other side of the equipment frame 3 and the conveyor line 10. A tire centering mechanism 5, a tire lubrication mechanism 7 and an inflation system 8 are set at the pre-processing station. The tire lubrication mechanism 7 is arranged on the conveyor line 10. The tire centering mechanism 5 is arranged on both sides of the tire lubrication mechanism 7. The tire centering mechanism 5 and the tire lubrication mechanism 7 are also fixedly installed on the equipment frame 3. An inflation system 8 for inflating the test tire 11 is installed on the equipment frame 3 above the pre-processing station. The inflation system 8 is connected to the inner cavity of the test tire 11.

[0044] The equipment frame 3 serves as the basic carrier of the equipment, consisting of a large base plate and a main frame. All other components are mounted on the equipment frame 3. The conveyor line 10 passes through the center of the main frame. While the main frame serves as the foundation for component installation, its frame-like structure provides high-strength support for the movement of side-mounted movable parts, thus enhancing the structural stability of the equipment. The layout of the large base plate improves the integration of the equipment, avoids the difficulties in transportation associated with a split-structure design, and also avoids the decrease in accuracy caused by transportation or equipment handling.

[0045] Meanwhile, the side of the equipment frame 3 experiences a large overturning force, requiring an additional counterweight on the other side to prevent the equipment frame 3 from tipping over. This invention installs the tire centering mechanism 5, tire lubrication mechanism 7, and inflation system 8 of the pre-processing station on the other side of the upper rim lifting mechanism 2 and upper clamp 12 of the equipment frame 3. This solves the problem of easy overturning force on the side of the balance testing machine while simultaneously installing and connecting the conveyor line 10, without requiring additional configuration, reducing costs, and improving the compactness of the equipment.

[0046] The load loading mechanism includes a load loading frame 14, a load wheel 15, and a force sensor 16. The load loading frame 14 is installed on one side of the uniformity test bench 1 and is slidably connected to the uniformity test bench 1 by a high-rigidity linear slide rail and a lead screw. The lead screw is driven by a drive motor to move the load loading frame 14 back and forth on the uniformity test bench 1. The load loading frame 14 is equipped with a load wheel 15, which is used to contact the test tire 11 on the uniformity test bench 1. The load wheel 15 is connected to the load loading frame 14 by a force sensor 16 at the top and bottom.

[0047] Force sensor 16 is a two-dimensional force sensor that can simultaneously measure forces in both horizontal and vertical directions. Bearings are installed inside load wheel 15, allowing it to rotate freely.

[0048] The uniformity test bench 1 is fixed to the base plate of the equipment frame 3. The lower clamp 13 is installed on the front side of the test bench and is driven to rotate by a motor also fixed to the side of the test bench. The load loading frame 14 is installed on the uniformity test bench 1 and is connected to the uniformity test bench 1 through a high-rigidity linear slide rail and a lead screw. The lead screw can be driven by the drive motor to make the load loading frame 14 slide back and forth on the uniformity test bench 1. The load wheel 15 is connected to the load loading frame 14 through a force sensor 16 at the top and bottom. The force sensor 16 is a two-dimensional force sensor that can simultaneously measure the force in both horizontal and vertical directions. The load wheel 15 has a bearing installed inside and can rotate freely. The upper rim lifting mechanism 2 is installed on the upper side of the equipment frame 3 through a guide rail and can be driven up and down by the motor of the upper rim lifting mechanism 2 to move the upper clamp 12 to a specified coordinate.

[0049] like Figure 8 As shown, the line lifting mechanism 4 includes a lifting component 401, an adjusting component 402, and a conveyor mounting base 403. The lifting component 401 is mounted on the lower part of the equipment frame 3. The adjusting component 402 is mounted on the upper part of the lifting component 401. The conveyor mounting base 403 is mounted on the adjusting component 402. Two conveyor lines 10 are mounted on the conveyor mounting base 403. The lifting component 401 drives the adjusting component 402, the conveyor mounting base 403, and the conveyor lines 10 to move up and down together. The adjusting component 402 drives the two conveyor lines 10 on the conveyor mounting base 403 to move horizontally closer to each other or further apart.

[0050] The conveyor line lifting mechanism 4 is fixed to the lower side of the equipment frame 3 and can be driven up and down by the lifting motor of the conveyor line lifting mechanism 4. The lifting component 401 is used to lift the conveyor line 10, and the spacing adjustment component 402 is used to adjust the spacing between the conveyor lines 10 to accommodate different tire sizes. This structure avoids problems such as flaring and slant caused by asynchronous adjustment during the width adjustment of long conveyor lines, avoids problems such as tire misalignment caused by conveyor line width adjustment, and further avoids mold closing collisions caused by tire misalignment. Of course, the spacing adjustment component can be manually adjusted using a handwheel or automatically adjusted using a motor or other programmed control.

[0051] Two conveyor lines 10 are installed on the screw guide rail assembly. The conveyor lines 10 are driven by the line drive motor installed on them to rotate the conveyor belt. The conveying direction of the conveyor line can be switched by controlling the rotation direction of the motors respectively. Alternatively, the tires on the conveyor line can be rotated in place by changing the rotation direction of one of the motors. Compared with a single motor driven conveyor line, this implementation method provides a great degree of freedom for the realization of the equipment function.

[0052] like Figure 9 As shown, the tire centering mechanism 5 is installed on the inner crossbeam of the main frame, and the tire centering mechanism 5 is driven by a cylinder 502 and a connecting rod.

[0053] A camera is installed on the equipment frame 3 directly above the tire lubrication mechanism 7, and tire centering mechanisms 5 are installed on the equipment frames 3 on both sides above the tire lubrication mechanism 7. More specifically, the tire centering mechanism 5 includes a cylinder 502, a long connecting rod 503, a short connecting rod 504, a bearing housing 505, and two centering modules. The two centering modules are respectively installed on the equipment frame 3 on both sides above the tire lubrication mechanism 7. Each centering module includes two gear arm assemblies. Each gear arm assembly is mainly composed of a clamp arm 506 and a gear 501 at one end of the clamp arm 506. Both the clamp arm 506 and the gear 501 at one end of the clamp arm 506 can be hingedly installed on the equipment frame 3. The gears 501 of the two gear arm assemblies in the same centering module mesh. Cylinder 502 is installed on one side of the equipment frame 3. The piston rod of cylinder 502 is connected to gear 501 of a gear arm assembly in one of the centering modules on one side. Specifically, the piston rod of cylinder 502 is hinged to one end of a connecting rod, and the other end of the connecting rod is fixedly connected to gear 501.

[0054] On the other side, an L-shaped bearing seat 505 is hinged to the gear 501 of a gear arm assembly in the centering module. The gear 501 of another gear arm assembly in the centering module is connected to the bearing seat 505 synchronously via a long connecting rod 503. Specifically, the gear 501 is fixedly connected to one end of a connecting rod, the other end of the connecting rod is hinged to one end of the long connecting rod 503, the other end of the long connecting rod 503 is hinged to one end of the L-shaped bearing seat 505, and the middle of the L-shaped bearing seat 505 is hinged to the gear 501.

[0055] The bearing housing 505 is synchronously connected to the gear 501 of another gear arm assembly in the centering module on the other side via a short connecting rod 504. Specifically, the other end of the L-shaped bearing housing 505 is hinged to one end of the short connecting rod 504, the other end of the short connecting rod 504 is hinged to one end of a connecting rod, and the other end of the connecting rod is fixedly connected to the gear 501.

[0056] The bearing housing 505 is centrally hinged to the gear 501 below. This joint transmits the torque of the long connecting rod 503 to the short connecting rod 504, while preventing the torque of the long connecting rod 503 from being transmitted to the gear below the bearing housing 505. The centering mechanism is driven by the extension and retraction of the piston rod of the cylinder 502. This structure has two sets arranged on both sides, and the combination of two-stage connecting rods avoids interference with the camera mounted at the center of the equipment due to the connecting rod directly passing through the equipment's center. The drive mechanism drives the four clamping arms to open and close, thus completing the tire centering function.

[0057] Specifically, the retraction of cylinder 502 causes gear 501 and arm 506 of one gear arm assembly in the centering module on one side to rotate towards the center. The meshing relationship between two gear arm assemblies in the same centering module also causes the other gear arm assembly to rotate towards the center. Due to the action of the long connecting rod 503, the bearing seat 505 in the centering module on the other side rotates synchronously. Since the bearing seat 505 is hinged to gear 501, gear 501 of one gear arm assembly in the centering module on the other side, which is hinged to the bearing seat 505, does not rotate. Instead, it causes gear 501 of another gear arm assembly in the centering module on the other side, connected to the other end of the bearing seat 505, to rotate towards the center. The meshing relationship between the two gear arm assemblies in the centering module on the other side also causes the other gear arm assembly to rotate towards the center. This achieves the rotation of all four gear arm assemblies towards the center, thereby clamping the test tire 11 and achieving centering.

[0058] Conversely, cylinder 502 extends, causing the four gear-arm assemblies to rotate away from the center, thereby loosening and clamping the test tire 11.

[0059] like Figure 1 As shown, the tire removal mechanism 9 is mounted on the upper rim lifting mechanism 2. The tire removal mechanism 9 is used to remove the test tire 11 from the upper and lower clamps after the test tire 11 has been tested.

[0060] like Figure 10As shown, the tire removal mechanism 9 includes a tire removal pressure plate 901, a tire removal claw width adjustment assembly 902, tire removal claws 903, and a lifting cylinder 904. The lifting cylinder 904 is fixed on the upper rim lifting mechanism 2. The piston rod of the lifting cylinder 904 is fixedly connected to the tire removal pressure plate 901, and the tire removal pressure plate 901 moves up and down with the piston rod of the lifting cylinder 904. The tire removal claw width adjustment assembly 902 and the two tire removal claws 903 are both installed on the tire removal pressure plate 901. The tire removal claw width adjustment assembly 902 is connected to the two tire removal claws 903 respectively. The opening and closing angle of the two tire removal claws 903 is adjusted by the tire removal claw width adjustment assembly 902. The lifting cylinder 904 drives the tire removal claws 903 and the tire removal claw width adjustment assembly 902 to move up and down as a whole. The tire removal claw width adjustment assembly 902 drives the two tire removal claws 903 to move separately, thereby adapting to tire rims of different sizes.

[0061] When the lifting cylinder 904 retracts, the tire release claw 903 disengages from the tire; when the lifting cylinder 904 extends, the tire release claw 903 presses down on the tire and causes the tire to disengage from the upper clamp.

[0062] Two tire removal claws 903 are used to move the inner edge of the test tire 11 to remove the test tire 11 clamped between the upper clamp 12 and the lower clamp 13. The tire removal claw width adjustment component 902 can use a screw and nut sliding pair to drive the two tire removal claws 903 to move.

[0063] The tire lubrication mechanism 7 is mounted on the middle crossbeam of the main frame of the equipment frame 3. This mechanism can drive the brush to move back and forth and up and down to lubricate the inner edge of the bead of the test tire 11. Specifically, the tire lubrication mechanism 7 is equipped with a ball bearing platform, and brushes for scraping are arranged around the upper side of the ball bearing platform.

[0064] The inflation system 8 is installed on the top beam of the main frame of the equipment frame 3. It consists of an air tank and an air control circuit, which can control the output air pressure and flow rate, and is used to inflate the tire 11 during the testing process.

[0065] like Figure 1 As shown, the specific implementation also includes an electrical control cabinet 6, which is installed on the side of the equipment frame 3 to provide power and control for the equipment. The electrical control cabinet 6 is connected to the electrical components in the uniformity test bench 1, the upper rim lifting mechanism 2, the line lifting mechanism 4, the tire centering mechanism 5, the inflation system 8, the tire unloading mechanism 9, and the conveyor line 10.

[0066] The upper rim lifting mechanism 2 is a device mechanism equipped with a motor and driven by the motor to move up and down along the direction of gravity; in specific implementation, a gear and rack transmission pair can be used.

[0067] The upper rim lifting mechanism 2 is installed on the upper side of the equipment frame 3 via a guide rail. It can move up and down by the motor of the upper rim lifting mechanism 2, thereby moving the upper clamp 12 to the designated coordinate.

[0068] The lower clamp 13 includes a lower rim 1301 coaxially fixedly mounted outside the main shaft 102 and a locking ring mechanism for locking the upper clamp. During the uniformity test, the test tire 11 is clamped between the upper rim 1212 and the lower rim 1301 of the upper clamp 12.

[0069] like Figure 5 and Figure 7 As shown, the upper clamp 12 is installed on the upper rim lifting mechanism 2 and is driven to move up and down by the upper rim lifting mechanism 2. The upper clamp mounting plate 1201 serves as the base of the upper clamp assembly and is fixed to the upper rim lifting mechanism 2, thus completing the installation of the upper clamp assembly.

[0070] More specifically, the upper clamp 12 includes an upper clamp mounting plate 1201, a positioning adjustment plate 1202, a collision buffer plate 1203, a horizontal adjustment seat 1204, a center adjustment seat 1205, a collision buffer spring 1206, a clamp unlocking cylinder 1207, a parallel gripper 1208, an upper clamp clutch ring 1209, an upper clamp anti-fall ring 1210, an upper clamp spindle 1211, an upper wheel rim 1212, a clamp lock 1213, an unlocking pressure head 1214, a locking button 1215, and a drive shaft 1217.

[0071] The upper clamp mounting plate 1201 is fixedly mounted on the upper wheel rim lifting mechanism 2. The upper clamp mounting plate 1201, the positioning adjustment plate 1202, and the collision buffer plate 1203 are arranged sequentially from bottom to top at intervals, and are also provided with leveling seats 1204, center adjustment seats 1205, and collision buffer springs 1206 for leveling, centering, and preventing falls. The bottom surface of the positioning adjustment plate 1202 can be horizontally mounted on the upper clamp mounting plate 1201 via the horizontal adjustment seats 1204 at each corner. The horizontal attitude of the positioning adjustment plate 1202 relative to the upper clamp mounting plate 1201 is adjusted by the horizontal adjustment seats 1204, so that the positioning adjustment plate 1202 is horizontally parallel to the lower clamp 13 and the test tire 11.

[0072] Each corner of the top surface of the positioning adjustment plate 1202 is equipped with a center adjustment seat 1205 and bolts. The center adjustment seat 1205 adjusts the horizontal movement of the positioning adjustment plate 1202 relative to the upper clamp mounting plate 1201, so that the cylinder, clamp unlocking cylinder 1207, upper clamp spindle 1211, etc. in the center of the positioning adjustment plate 1202 and the lower clamp 13 and test tire 11 below are kept aligned.

[0073] The collision buffer plate 1203 is elastically mounted on the positioning adjustment plate 1202 by the collision buffer springs 1206 at each corner. The floating interval distance of the collision buffer plate 1203 relative to the upper clamp mounting plate 1201 is adjusted by the collision buffer springs 1206 when the upper wheel rim lifting mechanism 2 is working.

[0074] The positioning adjustment plate 1202 is mounted on the upper clamp mounting plate 1201, and three triangular horizontal adjustment seats 1204 are installed between the two. The height of the horizontal adjustment seats 1204 is changed by threads, thereby adjusting the levelness of the positioning adjustment plate 1202.

[0075] More specifically, a non-through groove is provided on the top surface of the corner of the upper clamp mounting plate 1201. The horizontal adjustment seat 1204 of the block is embedded in the groove. The horizontal adjustment seat 1204 is mainly composed of two ring blocks connected by threads. The upper and lower ring blocks are connected by threads, so that the upper and lower ring blocks can rotate and thus adjust the vertical axial distance between the upper and lower ring blocks. The lower ring block is embedded in the groove, and the top surface of the upper ring block is connected to the bottom surface of the corner of the positioning adjustment plate 1202.

[0076] Both the upper and lower ring blocks are provided with slots. The slot of the lower ring block is used to engage with the protrusion in the groove to form a non-rotatable fitting. The slot of the upper ring block is used to rotate by an external crescent wrench. By rotating the upper ring block, the vertical axial distance between the upper and lower ring blocks is adjusted, thereby adjusting the distance between the top surface of the upper clamp mounting plate 1201 and the bottom surface of the positioning adjustment plate 1202. The horizontal adjustment seats 1204 between the triangles of the upper clamp mounting plate 1201 and the positioning adjustment plate 1202 are adjusted to adjust the horizontal posture of the positioning adjustment plate 1202 relative to the upper clamp mounting plate 1201.

[0077] Since the upper clamp mounting plate 1201 is fixed on the upper rim lifting mechanism 2, the upper rim lifting mechanism 2 may not be horizontal but tilted. In this way, the positioning adjustment plate 1202 can be adjusted to maintain a horizontal posture when the upper clamp mounting plate 1201 is tilted by the structure of the horizontal adjustment seat 1204.

[0078] A center adjustment seat 1205 is installed above the positioning adjustment plate 1202 at a position corresponding to the horizontal adjustment seat 1204. More specifically, a non-through circular blind hole is opened on the top surface of the corner of the positioning adjustment plate 1202. The center adjustment seat 1205 of the block is embedded in the blind hole. The lower end of the center adjustment seat 1205 is provided with a circular boss. The boss is rotatably embedded in the circular blind hole, so that the center adjustment seat 1205 can rotate around its own central axis in the blind hole. A waist-shaped groove is opened in the middle of the center adjustment seat 1205, which is vertically through. The bolt passes downward through the waist-shaped groove and then passes through the positioning adjustment plate 1202, the horizontal adjustment seat 1204, and the upper clamp mounting plate 1201 in sequence before being threaded onto the upper rim lifting mechanism 2.

[0079] When the bolt is loosened, the rotating center adjustment seat 1205 causes the length direction of the waist-shaped groove to move horizontally along the required direction of the positioning adjustment plate 1202. This causes the center adjustment seat 1205 and the positioning adjustment plate 1202 to move horizontally along the length direction of the waist-shaped groove together. The bolt moves in the waist-shaped groove, which in turn causes the positioning adjustment plate 1202 to move horizontally relative to the upper clamp mounting plate 1201.

[0080] The center adjustment seat 1205 of the triangular positioning adjustment plate 1202 is used to drive the center adjustment seat 1205 to move horizontally and by moving a distance relative to the upper clamp mounting plate 1201.

[0081] When the locking screw of the center adjusting seat 1205 is loosened, the positioning adjusting plate 1202 can move freely on the plane formed by the three triangular horizontal adjusting seats 1204. When the locking screw of the center adjusting seat 1205 is tightened, the position of the positioning adjusting plate 1202 is locked and cannot be moved. Through the above mechanism, the upper clamp has the functions of horizontal adjustment and center adjustment. This ensures that the upper and lower clamps are concentric and coaxial, avoiding malfunctions caused by misalignment of the upper and lower clamps.

[0082] The three center adjustment seats 1205 can determine a unique adjustment direction. This structure avoids the random offset problem caused by centering with a large hole, and also has the function of centering in any direction.

[0083] The collision buffer spring 1206 is fitted outside the spring bolt and located on the collision buffer plate 1203. The spring bolt passes downward through the collision buffer spring 1206 and then moves through the collision buffer plate 1203 before being threaded into the threaded hole on the corner of the positioning adjustment plate 1202.

[0084] A collision detection sensor is installed between the collision buffer plate 1203 and the positioning adjustment plate 1202 to detect whether there is a collision during the mold closing process of the upper and lower clamps. The collision detection sensor detects the distance between the collision buffer plate 1203 and the positioning adjustment plate 1202 in real time. When the distance detected by the collision detection sensor in real time is greater than the preset distance threshold, the collision detection sensor generates a signal, which controls the motor in the upper rim lifting mechanism 2 to stop working through the controller in the electrical control cabinet 6, that is, drives the upper rim lifting mechanism 2 to stop descending and moving, so as to play the anti-collision function.

[0085] The collision buffer plate 1203 is mounted on the positioning adjustment plate 1202, and the two are connected by guide posts with spring bolts. Its horizontal position is relatively fixed, while it can move freely in the vertical direction. A collision buffer spring 1206 is installed on the guide post to restrict the vertical movement of the collision buffer plate 1203. However, when the upper clamp 12 collides with the lower clamp 12, initially, the collision buffer plate 1203 moves upward against the collision buffer spring 1206 due to the collision force. When the collision buffer plate 1203 disengages from the positioning adjustment plate 1202, the collision detection sensor is triggered, issuing an alarm and a post-collision processing procedure, thus resolving the collision state and preventing equipment damage.

[0086] A parallel gripper 1208 is fixedly installed at the lower end of the collision buffer plate 1203. The lower end of the parallel gripper 1208 passes downward through the upper clamp mounting plate 1201 and is then installed with an upper clamp clutch ring 1209. The upper clamp clutch ring 1209 is used to clamp the upper clamp spindle 1211. At the same time, an upper clamp anti-fall ring 1210 is fixedly installed at the lower end of the parallel gripper 1208. The top end of the upper clamp spindle 1211 is arranged on the step formed by the anti-fall ring 1210 and is restricted from moving downward. A parallel gripper 1208 is fixedly installed at the lower end of the collision buffer plate 1203. The parallel gripper 1208 passes downward through the upper clamp mounting plate 1201. The lower edge of the parallel gripper 1208 is connected to the upper clamp clutch ring 1209, which is composed of multiple clutch blocks. The parallel gripper 1208 may have a built-in motor to drive the multiple clutch blocks to move closer to or away from the center. The upper end of the upper clamp clutch ring 1209 is fixedly connected to the lower end of the parallel gripper 1208. The upper clamp clutch ring 1209 is used to clamp the upper end of the upper clamp spindle 1211. The multiple clutch blocks of the upper clamp clutch ring 1209 move closer to clamp the upper end of the upper clamp spindle 1211, so that the upper clamp spindle 1211, the parallel gripper 1208, and the collision buffer plate 1203 rotate synchronously.

[0087] Meanwhile, a fall arresting ring 1210, composed of multiple fall arresting blocks, is provided in the middle of the lower end of the parallel gripper 1208. The relative positions of the multiple fall arresting blocks are always fixed. The top surface of the fall arresting ring 1210 is fixed to the bottom surface of the parallel gripper 1208. The upper end of the upper gripper spindle 1211 is provided with an outer flange of a larger diameter, and the lower end of each fall arresting block is provided with a horizontal flange. The horizontal flange extends towards the center and supports the lower stepped surface of the outer flange at the top of the upper gripper spindle 1211, thereby limiting the downward movement of the upper gripper spindle 1211 and providing a fall prevention function. That is, the inner diameter of the bottom end of the multiple fall arresting blocks is smaller than the outer diameter of the outer flange at the top of the upper gripper spindle 1211.

[0088] In specific implementation, such as Figure 6As shown, the multiple clutch blocks of the upper clamp clutch ring 1209 and the multiple anti-fall blocks of the upper clamp anti-fall ring 1210 are arranged alternately and circumferentially. Typically, three of each are used, with the three clutch blocks and three anti-fall blocks arranged alternately and circumferentially, staggered to avoid interference in position, while simultaneously achieving clamping and anti-fall support for the upper clamp spindle 1211. The support ring 1218 is installed on the lower side of the upper clamp mounting plate 1201, and the support ring 1218 and the upper clamp spindle 1211 are circumferentially connected by a bearing clearance fit.

[0089] During equipment testing, when the tire under test is subjected to pressure from the load wheel, the support ring 1218 and the test bench simultaneously provide two force fulcrums. The advantage of this design is that it changes the stress state of the tire under test from a cantilever beam with single-end force to a simply supported beam with forces at both ends. Simultaneously, since the bearings do not restrict axial displacement, the fixture will not deform or jam. Even better, because the support ring 1218 is integrated into the upper fixture and can move with it, the upper fulcrum of the tire always maintains a relatively short lever arm with the tire. This stress state maximizes the rigidity of the equipment during uniformity testing, avoiding changes in the force arm due to tire width variations, which in turn alters the equipment's rigidity. Compared to hydraulically driven structures, the advantages of a shorter lever arm and greater equipment rigidity are significant.

[0090] When the upper clamping clutch rings 1209 are in the closed state, they firmly hold the upper clamping spindle 1211, preventing the spindle from moving. When the upper clamping clutch rings 1209 are in the open state, the upper clamping spindle 1211 can move freely. The upper clamping anti-fall ring 1210 is installed below the parallel gripper 1208, offset from the upper clamping clutch rings 1209, and surrounds the upper clamping spindle 1211, with a certain gap in the circumferential direction between it and the spindle. The spindle can rotate or move upward, but cannot fall.

[0091] The clamp unlocking cylinder 1207 is installed on the collision buffer plate 1203 and can drive the unlocking pressure head 1214 to move up and down. The parallel gripper 1208 is installed below the collision buffer plate 1203 and drives the upper clamp clutch ring 1209 to open and close.

[0092] The clamp unlocking cylinder 1207 is fixedly mounted on the collision buffer plate 1203. The lower end of the piston rod of the clamp unlocking cylinder 1207 passes through the collision buffer plate 1203 downwards and is then fixedly connected to the upper end of the unlocking pressure head 1214 in the central through hole inside the parallel gripper 1208. The unlocking pressure head 1214 is actually a vertical shaft, which is driven by the clamp unlocking cylinder 1207 to move up and down in the central through hole inside the parallel gripper 1208. The upper clamp spindle 1211 has a central through hole, in which a transmission device is installed. Shaft 1217 and upper wheel rim 1212 are coaxially fixedly mounted on the outside of upper clamp spindle 1211. After the upper end of the drive shaft 1217 extends out of the central through hole of the upper clamp spindle 1211, a locking button 1215 is fixedly installed. The locking button 1215 is used to make pressure contact with the bottom surface of the unlocking pressure head 1214. The middle part of the drive shaft 1217 is connected to the central through hole of the upper clamp spindle 1211 through a locking spring 1216. After the lower end of the drive shaft 1217 passes through the central through hole of the upper clamp spindle 1211, a clamp lock 1213 is installed.

[0093] The lower ends of the upper clamp spindle 1211 and the drive shaft 1217 pass through the lower rim 1301 of the lower clamp 13 and extend into the central through hole of the main shaft 102. They are fixedly connected by the locking spring 1216 and the clamp lock 1213, so as to achieve coaxial fixation of the upper clamp spindle 1211, the main shaft 102 and the lower clamp 13, and thus achieve coaxial fixed rotation between the upper clamp 12, the lower clamp 13 and the main shaft 102.

[0094] In specific implementation, a locking spring 1216 is fitted on the top of the drive shaft 1217 connected to the bottom of the locking button 1215. The center of the central through hole of the upper clamp spindle 1211 is set as a stepped hole with a larger top and a smaller bottom. The diameter of the locking button 1215 is larger than the diameter of the drive shaft 1217. The upper and lower ends of the locking spring 1216 are elastically connected to the stepped surface between the locking button 1215 and the drive shaft 1217 and the stepped surface of the stepped hole of the upper clamp spindle 1211, respectively.

[0095] Meanwhile, the lower ends of the upper clamping mandrel 1211 and the transmission shaft 1217 are used together to pass through the lower rim 1301 of the lower clamping 13 and extend into the central through hole of the main shaft 102. The central through hole of the main shaft 102 has a toothed groove structure on its wall. The lower end of the transmission shaft 1217 is set as a tapered pendant with a smaller upper end and a larger lower end. The bottom of the central through hole of the upper clamping mandrel 1211 is opened into a tapered cavity that matches the shape of the pendant. The tapered pendant is embedded in the tapered cavity. The central through hole wall of the upper clamping mandrel 1211 outside the tapered cavity has a horizontally penetrating radial channel. The clamping latch 1213 is installed in the radial channel. The clamping latch 1213 can move horizontally in the radial channel. The latch and the transmission shaft are fitted with a T-groove, which can extend and retract, so that the clamping latch 1213 can be horizontally reset in the radial channel. The inner end of the clamp lock 1213 is configured as a partial conical surface for contact with the conical surface of the conical plumb bob, and the outer end of the clamp lock 1213 is provided with a toothed groove structure that cooperates with the sawtooth structure of the central through hole wall of the main shaft 102. The top surface of the conical plumb bob and the top surface of the conical inner cavity are connected by a conical surface contact.

[0096] like Figure 11 As shown, when the upper clamp spindle 1211 is clamped and restricted by the upper clamp clutch ring 1209 and cannot rotate or move axially up and down, the piston rod of the clamp unlocking cylinder 1207 moves downward, causing the unlocking pressure head 1214 to also move downward, pushing the locking button 1215 and the transmission shaft 1217 to overcome the force of the latch extension spring 1216 and move downward relative to the upper clamp spindle 1211. This causes the top surface of the conical pendant of the transmission shaft 1217 to separate from the top surface of the conical inner cavity of the bottom surface of the upper clamp spindle 1211, creating a gap. The clamp latch 1213 moves radially inward in the radial channel and comes into contact with the conical pendant surface of the transmission shaft 1217, thereby causing the outer end of the clamp latch 1213 to disengage from the sawtooth structure of the central through hole of the main shaft 102. Figure 13 As shown, the upper clamp spindle 1211 can be controlled to move freely up and down relative to the main spindle 102, thereby achieving the coaxial disengagement of the upper clamp spindle 1211 from the main spindle 102 and the lower clamp 13, and thus achieving the coaxial disconnection between the upper clamp 12, the lower clamp 13, and the main spindle 102, so that the upper clamp 12 can move freely up and down.

[0097] like Figure 12As shown, the piston rod of the clamp unlocking cylinder 1207 moves upward, causing the unlocking pressure head 1214 to also move upward. Under the force of the latch extension spring 1216, the locking button 1215 and the drive shaft 1217 move upward relative to the upper clamp spindle 1211, so that the top surface of the conical sag of the drive shaft 1217 and the top surface of the conical inner cavity of the bottom surface of the upper clamp spindle 1211 are in close contact, pushing the clamp latch 1213 to move radially outward in the radial channel, thereby making the outer end of the clamp latch 1213 mesh with the sharp-angle serrated structure of the central through hole of the main shaft 102, thus realizing the coaxial fixed connection between the upper clamp 12 and its upper clamp spindle 1211, the main shaft 102, and the lower clamp 13, so that the main shaft 102 and the lower clamp 13 rotate simultaneously, driving the upper clamp 12 and its upper clamp spindle 1211 and the drive shaft 1217 to rotate synchronously.

[0098] Furthermore, the toothed structure of the central through hole wall of the main shaft 102 is set as a multi-level toothed structure with different heights along the vertical axis. By adjusting the locking button 1215 and the transmission shaft 1217 into different axial positions in the central through hole of the main shaft 102, the clamp lock 1213 is engaged in the toothed structure at different heights, thereby adjusting the distance between the upper rim 1212 of the upper clamp 12 and the lower rim 1301 of the lower clamp 13, thereby achieving different clamping forces and clamping of test tires 11 of different sizes.

[0099] This design not only provides an adjustable coaxial fixed connection between the upper clamp 12 and the lower clamp 13, but also cleverly creates an adjustable axial height, thereby enabling the clamping of the test tire 11 and the adjustment of the clamping force.

[0100] The clamp latch 1213 is installed on the mandrel, and the top of the mandrel is designed with a locking button 1215: when the locking button 1215 is pushed down by the unlocking head 1214, the clamp latch 1213 retracts into the mandrel; when the locking button 1215 is not pushed up by the unlocking head 1214 and pops up, the clamp latch 1213 extends out of the mandrel and cooperates with the lower clamp 13 to form a mold closing state.

[0101] The upper rim 1212 is mounted on the spindle 1211. The mounting interface of the upper rim 1212 adopts a special tapered fit, which allows for easy replacement of the rim according to production needs and ensures that the fixture accuracy meets production requirements. During the testing process, whether the rim and the tire fit precisely is a key factor in the accuracy of the test results.

[0102] The lower clamp 13 is installed at the center of the uniformity test bench 1 and is driven to rotate by the main shaft 102 inside the uniformity test bench 1. The lower clamp 13 is equipped with a lower rim 1301.

[0103] During the mold closing process, the upper rim lifting mechanism 2 drives the upper clamp 12 to move downwards, and the upper clamp spindle 1211 and transmission shaft 1217 are inserted into the center through hole of the lower clamp 12 and the main shaft 102. If the upper and lower clamps become misaligned or obstructed during the descent, a collision alarm will be triggered, and timely measures such as stopping the machine, terminating mold closing, and retraction will be taken to avoid major accidents such as equipment damage and personal injury. If the status is normal, the movement will reach the specified coordinate, the clamp unlocking cylinder 1207 will retract, which will drive the unlocking pressure head 1214 to retract, and the locking button 1215 will pop out under the action of the spring, which will drive the clamp lock 1213 to extend and hook the lower clamp inner groove. The lower clamp centering mechanism holds the upper clamp spindle 1211, and the upper clamp clutch ring 1209 releases, completing the mold closing action. At this time, the upper and lower clamps can rotate synchronously for testing. The mold opening process is the reverse of the steps. During rotation, the clutch ring serves as the boundary. The part below the clutch ring rotates with the lower clamp after the mold is closed, while the part above the clutch ring remains fixed.

[0104] The upper clamp offers enhanced safety and stability.

[0105] The operation process of this utility model is as follows: 1. The test tire 11 is conveyed from the production line to the front end of the equipment, and then transported by the conveyor line 10 to the platform above the tire lubrication mechanism 7. The line lifting mechanism 4 then drives the conveyor line 10 to descend, and the test tire 11 is lowered onto the tire lubrication mechanism 7. 2. The tire centering mechanism 5 performs the centering action to position the test tire 11 to the center of the tire lubrication mechanism 7. The line connecting the center of the tire lubrication mechanism 7 and the center of the testing station is parallel to the conveying direction of the conveyor line 10. 3. The brush of the tire lubrication station in the tire lubrication mechanism 7 is driven by the cylinder to come into contact with the inner edge of the bead of the test tire 11. Then the tire centering mechanism 5 clamps the test tire 11 and drives the test tire 11 to rotate on the lubrication platform. The lubricant on the brush is evenly applied to the inner edge of the bead of the test tire 11 for lubrication. 5. After lubrication is completed, the line lifting mechanism 4 drives the conveyor line 10 to lift the test tire 11 from the tire lubrication mechanism 7. Then the conveyor line 10 moves and transports the test tire 11 along the conveying direction to the test station on the uniformity test bench 1 at the rear end. 6. The line lifting mechanism 4 then lowers the line to place the test tire 11 on the lower rim 1301, and the conveyor line 10 is then removed from the test tire 11. 7. Then the upper rim lifting mechanism 2 drives the upper clamp 12 to descend to the designated position, so that the upper rim 1212 is close to the test tire 11; 8. The upper rim lifting mechanism 2 drives the upper clamp 12 to continue to descend until the upper rim 1212 contacts and presses down on the test tire 11, so that the upper clamp 12 and the lower clamp 13 perform a mold closing and locking action, clamping the test tire 11 between the upper and lower rims 1212 and 1301. 9. The inflation system 8 inflates the test tire 11 according to the set air pressure, so that the inner edge of the bead of the test tire 11 is tightly sealed with the upper and lower rims 1212 and 1301, achieving the internal sealing test state. 10. The test bench drives the test tire 11 to rotate, and at the same time the load loading frame 14 drives the load wheel 15 to come close to the test tire 11 and applies a set load force to squeeze the test tire 11, and the test tire 11 drives the load wheel 15 to rotate.

[0106] 11. Force sensors 16 on the upper and lower sides of the load wheel 15 collect the horizontal and vertical reaction forces of the test tire 11 on the load wheel 15, and analyze the signals to calculate the data related to the uniformity of the test tire 11.

[0107] 12. After data acquisition is completed, the load loading frame 14 drives the load wheel 15 back to the origin.

[0108] 13. After the uniformity test is completed, the testing system will rotate the test tire 11 to a specified angle to prepare for the next station, and the inflation system 8 will depressurize and release the air pressure inside the test tire 11. 14. The upper rim lifting mechanism 2 drives the upper clamp 12 to rise, thereby unlocking the upper clamp 12 and the lower clamp 13. That is, the upper and lower clamps are unlocked, and the upper rim lifting mechanism 2 drives the upper clamp 12 to move up to the designated position. At the same time, the tire removal mechanism 9 moves to remove the test tire 11 from the upper rim 1212 of the upper clamp 12. 15. The line lifting mechanism 4 drives the conveyor line 10 to rise and lift the test tire 11 off the clamp 13, sending the test tire 11 out of the equipment. At the same time, another test tire 11 that has completed the lubrication process is transported to the uniformity test table 1 for testing.

[0109] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

[0110] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A tire uniformity testing machine, characterized in that: It includes an equipment frame (3), a conveyor line (10), a testing station and a pre-processing station; the line lifting mechanism (4) is installed in the middle of the equipment frame (3), and the line lifting mechanism (4) is equipped with a conveyor line (10) for conveying the test tire (11). A test station is arranged on one side of the equipment frame (3). The test station is equipped with a tire removal mechanism (9), an upper rim lifting mechanism (2), a uniformity test table (1), an upper clamp (12), and a lower clamp (13). A uniformity test table (1) is arranged on the lower side of the test station. The uniformity test table (1) is installed on one side of the equipment frame (3). A main shaft (102) is provided inside the uniformity test table (1). A lower clamp (13) for connecting the lower end of the test tire (11) is installed on the uniformity test table (1). An upper rim lifting mechanism is arranged on the upper side of the test station. The lifting mechanism (2) is mounted on the equipment frame (3) on the same side as the uniformity test bench (1). The upper rim lifting mechanism (2) is provided with a tire removal mechanism (9) at the bottom. The upper rim lifting mechanism (2) is equipped with an upper clamp (12) for connecting the upper end of the test tire (11). The upper clamp (12) and the lower clamp (13) are connected to form a tire test fitting fixture. The tire test fitting fixture is used for floating clamping and simultaneously realizes the functions of horizontal movement, centering, anti-collision, anti-fall and clutch. A pre-processing station is arranged at the bottom of the other side of the equipment frame (3). A tire centering mechanism (5), a tire lubrication mechanism (7) and an inflation system (8) are provided at the pre-processing station. The tire lubrication mechanism (7) is arranged on the conveyor line (10). The tire centering mechanism (5) is arranged on the side of the tire lubrication mechanism (7). An inflation system (8) for inflating the test tire (11) is installed on the equipment frame (3) above the pre-processing station.

2. The tire uniformity testing machine according to claim 1, characterized in that: The load loading mechanism includes a load loading frame (14), a load wheel (15), and a force sensor (16). The load loading frame (14) is installed on one side of the uniformity test bench (1) and is connected to the uniformity test bench (1) by a linear slide rail and a lead screw, which are relatively close to or far away from each other. The load loading frame (14) is equipped with a load wheel (15), which is used to contact the test tire (11) on the uniformity test bench (1). The load wheel (15) is connected to the load loading frame (14) by a force sensor (16) at the top and bottom.

3. The tire uniformity testing machine according to claim 1, characterized in that: The lifting mechanism (4) includes a lifting component (401), an adjusting component (402), and a conveyor mounting base (403). The lifting component (401) is mounted on the equipment frame (3). The adjusting component (402) is mounted on the upper part of the lifting component (401). The conveyor mounting base (403) is mounted on the adjusting component (402). Two conveyor lines (10) are mounted on the conveyor mounting base (403). The lifting component (401) drives the adjusting component (402), the conveyor mounting base (403), and the conveyor lines (10) to move up and down together. The adjusting component (402) drives the two conveyor lines (10) on the conveyor mounting base (403) to move horizontally closer to each other or further apart.

4. The tire uniformity testing machine according to claim 1, characterized in that: A camera is installed on the equipment frame (3) directly above the tire lubrication mechanism (7), and tire centering mechanisms (5) are installed on the equipment frames (3) on both sides above the tire lubrication mechanism (7). The tire centering mechanism (5) includes a cylinder (502), a long connecting rod (503), a short connecting rod (504), a bearing seat (505), and two centering modules. The two centering modules are respectively installed on the equipment frame (3) on both sides above the tire lubrication mechanism (7). Each centering module includes two gear arm assemblies. Each gear arm assembly is mainly composed of an arm (506) and a gear (501) at one end of the arm (506) fixedly connected. The gears (501) of the two gear arm assemblies in the same centering module mesh with each other. The cylinder (502) is installed on the equipment frame (3). On the cylinder (502), the piston rod is connected to the gear (501) of a gear arm assembly in one of the centering modules on one side. An L-shaped bearing seat (505) is hinged to the gear (501) of a gear arm assembly in one of the centering modules on the other side. The gear (501) of another gear arm assembly in one of the centering modules on one side is connected to the bearing seat (505) synchronously via a long connecting rod (503). The bearing seat (505) is connected to the gear (501) of another gear arm assembly in the centering module on the other side via a short connecting rod (504).

5. A tire uniformity testing machine according to claim 1, characterized in that: The tire removal mechanism (9) includes a tire removal pressure plate (901), a tire removal claw width adjustment assembly (902), a tire removal claw (903), and a lifting cylinder (904). The lifting cylinder (904) is fixed on the upper rim lifting mechanism (2). The piston rod of the lifting cylinder (904) is fixedly connected to the tire removal pressure plate (901). The tire removal claw width adjustment assembly (902) and the two tire removal claws (903) are both installed on the tire removal pressure plate (901). The tire removal claw width adjustment assembly (902) is connected to the two tire removal claws (903) respectively.

6. A tire uniformity testing machine according to claim 1, characterized in that: The upper rim lifting mechanism (2) is a device mechanism with a motor, which is controlled by the motor to move up and down along the direction of gravity. The lower clamp (13) includes a lower rim (1301) coaxially fixedly mounted outside the main shaft (102). During the uniformity test, the test tire (11) is clamped between the upper rim (1212) and the lower rim (1301) of the upper clamp (12).

7. A tire uniformity testing machine according to claim 1 or 6, characterized in that: The upper clamp (12) includes an upper clamp mounting plate (1201), a positioning adjustment plate (1202), a collision buffer plate (1203), a horizontal adjustment seat (1204), a center adjustment seat (1205), a collision buffer spring (1206), a clamp unlocking cylinder (1207), a parallel gripper (1208), an upper clamp clutch ring (1209), an upper clamp spindle (1211), an upper rim (1212), a clamp lock (1213), and an unlocking pressure head (1204). 214), locking button (1215) and drive shaft (1217); the upper clamp mounting plate (1201) is fixedly mounted on the upper rim lifting mechanism (2). The upper clamp mounting plate (1201), positioning adjustment plate (1202), and collision buffer plate (1203) are arranged alternately from bottom to top, and are equipped with leveling seats (1204), centering seats (1205), and collision buffer springs (1206) for leveling, centering, and anti-fall. The bottom surface of the positioning adjustment plate (1202) is mounted on the upper clamp mounting plate (1201) with relative horizontal movement via the horizontal adjustment seats (1204) at each corner. The horizontal attitude of the positioning adjustment plate (1202) relative to the upper clamp mounting plate (1201) is adjusted by the horizontal adjustment seats (1204) so ​​that the positioning adjustment plate (1202) is horizontally parallel to the lower clamp (13) and the test tire (11). Each corner of the top surface of the positioning adjustment plate (1202) is equipped with a center adjustment seat (1205) and bolts. The horizontal movement of the positioning adjustment plate (1202) relative to the upper clamp mounting plate (1201) is adjusted by the center adjustment seat (1205) so that the center of the positioning adjustment plate (1202) and the lower clamp (13) and the test tire (11) below it remain aligned. The collision buffer plate (1203) is elastically mounted on the positioning adjustment plate (1202) by the collision buffer springs (1206) at each corner. The floating interval distance of the collision buffer plate (1203) relative to the upper clamp mounting plate (1201) is adjusted by the collision buffer springs (1206) when the upper rim lifting mechanism (2) is working. The lower end of the collision buffer plate (1203) is fixedly installed with a parallel pneumatic gripper (1208). The lower end of the parallel pneumatic gripper (1208) passes downward through the upper clamp mounting plate (1201) and is then installed with an upper clamp clutch ring (1209). The upper clamp clutch ring (1209) is used to clamp the upper clamp spindle (1211). At the same time, the lower end of the parallel pneumatic gripper (1208) is fixedly installed with an upper clamp anti-fall ring (1210). The top end of the upper clamp spindle (1211) is arranged on the step formed by the anti-fall ring (1210) and is restricted from moving downward. The support ring (1218) is installed on the lower side of the upper clamp mounting plate (1201). The support ring (1218) and the upper clamp spindle (1211) are circumferentially connected by a bearing clearance fit. The clamp unlocking cylinder (1207) is fixedly installed on the collision buffer plate (1203). The lower end of the piston rod of the clamp unlocking cylinder (1207) passes through the collision buffer plate (1203) downward and is then fixedly connected to the upper end of the unlocking pressure head (1214) in the central through hole inside the parallel gripper (1208). The clamp unlocking cylinder (1207) drives the unlocking pressure head (1214) to move up and down in the central through hole inside the parallel gripper (1208). A central through hole is opened in the upper clamping mandrel (1211), and a drive shaft (1217) is installed in the central through hole. The upper rim (1212) is coaxially fixedly fitted outside the upper clamping mandrel (1211). The upper end of the drive shaft (1217) extends out of the upper clamping mandrel (1211). A locking button (1215) is fixedly installed behind the center through hole of 11). The locking button (1215) is used to cooperate with the unlocking pressure head (1214) for pressure contact. The middle part of the drive shaft (1217) is connected to the center through hole of the upper clamp spindle (1211) through the locking spring (1216). The lower end of the drive shaft (1217) is installed with a clamp lock (1213) after passing through the center through hole of the upper clamp spindle (1211). The lower ends of the upper clamp spindle (1211) and the drive shaft (1217) pass through the lower rim (1301) of the lower clamp (13) and extend into the center through hole of the main shaft (102). They are fixedly connected by the locking spring (1216) and the clamp lock (1213).

8. A tire uniformity testing machine according to claim 7, characterized in that: The upper clamp mounting plate (1201) has a non-through groove on its top surface. A horizontal adjustment seat (1204) is embedded in the groove. The horizontal adjustment seat (1204) is mainly composed of two ring blocks connected by a threaded rotation. The lower ring block is embedded in the groove, and the top surface of the upper ring block is connected to the bottom surface of the positioning adjustment plate (1202). The top surface of the positioning adjustment plate (1202) is provided with a non-through blind hole, in which a center adjustment seat (1205) is embedded. The lower end of the center adjustment seat (1205) is provided with a boss, which is rotatably embedded in the blind hole, so that the center adjustment seat (1205) can rotate around its own central axis in the blind hole. The center adjustment seat (1205) is provided with a waist-shaped groove that runs vertically through the middle. The bolt passes through the waist-shaped groove downwards and then passes through the positioning adjustment plate (1202), the horizontal adjustment seat (1204), and the upper clamp mounting plate (1201) in sequence before being threaded onto the upper rim lifting mechanism (2). The collision buffer spring (1206) is fitted over the spring bolt and located on the collision buffer plate (1203). The spring bolt passes downward through the collision buffer spring (1206) and then moves through the collision buffer plate (1203) before being threaded into the threaded hole on the positioning adjustment plate (1202). A collision detection sensor is provided between the collision buffer plate (1203) and the positioning adjustment plate (1202). The collision detection sensor detects the distance between the collision buffer plate (1203) and the positioning adjustment plate (1202) in real time. When the distance detected by the collision detection sensor in real time is greater than the preset distance threshold, the collision detection sensor generates a signal to control the motor in the upper rim lifting mechanism (2) to stop working, that is, to drive the upper rim lifting mechanism (2) to stop descending.

9. A tire uniformity testing machine according to claim 7, characterized in that: A parallel pneumatic gripper (1208) is fixedly installed at the lower end of the collision buffer plate (1203). The parallel pneumatic gripper (1208) is arranged downward through the upper clamp mounting plate (1201). The lower edge of the parallel pneumatic gripper (1208) is connected to the upper clamp clutch ring (1209) composed of multiple clutch blocks. The parallel pneumatic gripper (1208) is used to drive the multiple clutch blocks to move closer to or away from the center. The upper clamp clutch ring (1209) is used to clamp the upper clamp. The upper end of the mandrel (1211) and the middle of the lower end of the parallel gripper (1208) are provided with an upper clamp anti-fall ring (1210) composed of multiple anti-fall blocks. The upper end of the upper clamp mandrel (1211) is provided with an outer flange with a larger diameter. The lower end of each anti-fall block is provided with a horizontal flange. The horizontal flange extends towards the center and supports the lower step surface of the outer flange at the top of the upper clamp mandrel (1211), so that the downward movement of the upper clamp mandrel (1211) is limited.

10. A tire uniformity testing machine according to claim 7, characterized in that: A latch extension spring (1216) is fitted on the top of the drive shaft (1217) connected to the bottom of the locking button (1215). The central through hole of the upper clamp spindle (1211) is a stepped hole with a larger top and a smaller bottom. The upper and lower ends of the latch extension spring (1216) are elastically connected to the stepped surface between the locking button (1215) and the drive shaft (1217) and the stepped surface of the stepped hole of the upper clamp spindle (1211), respectively. Simultaneously, the lower ends of the upper clamp mandrel (1211) and the drive shaft (1217) are used together to pass through the lower rim (1301) of the lower clamp (13) and extend into the central through hole of the main shaft (102). The central through hole wall of the main shaft (102) is provided with a toothed groove structure. The lower end of the drive shaft (1217) is set as a conical pendant with a smaller upper end and a larger lower end. The bottom of the central through hole of the upper clamp mandrel (1211) is opened into a conical cavity that matches the shape of the pendant. The conical pendant is embedded in... In the conical cavity, a horizontally penetrating radial channel is opened in the central through hole wall of the upper clamping mandrel (1211) at the outlet of the conical cavity. The clamping latch (1213) is installed in the radial channel. The clamping latch (1213) can move horizontally in the radial channel. The inner end of the clamping latch (1213) is set as a conical surface for contact with the conical plumb body. The outer end of the clamping latch (1213) is provided with a toothed groove structure that cooperates with the sawtooth structure of the central through hole wall of the main shaft (102). Furthermore, the toothed structure of the central through hole wall of the main shaft (102) is set as a multi-level toothed structure with different heights along the vertical axis. By adjusting the locking button (1215) and the transmission shaft (1217) into different axial positions in the central through hole of the main shaft (102), the clamp lock (1213) is engaged in the toothed structure at different heights, thereby adjusting the distance between the upper clamp (12) and the lower clamp (13), thereby achieving different clamping forces and clamping of test tires (11) of different sizes.

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