Tire defect detection data calibration device and method

Abstract

The present invention relates to a tire defect detection data calibration device and method, comprising a tire, wherein an attachment mechanism is mounted on the tire, the attachment mechanism being provided with a hook and an elastic Velcro, the hook being an integrally formed structure, one end of the hook being provided with a rectangular frame for connecting to the elastic Velcro, the elastic Velcro being provided with a hook surface and a furry surface, wherein the furry surface is connected to the hook, and the hook surface is connected to a calibration block; the inconvenience of the current data calibration form of using adhesive tape and a single calibration block is solved, the tire and data image can be calibrated conveniently and quickly by means of this device, the device can quickly match tires of various sizes and types by means of several combinations, and the problems of irregular manually combined checkerboards and low calibration block accuracy are solved by means of the existing checkerboard arrangement layout.

Description

Technical Field

[0001] The present invention relates to the technical field of tire detection, and in particular to a tire defect detection data calibration device and method. Background Art

[0002] To improve the production quality and safe lifecycle of motor vehicle tires, a series of online inspections are required during the manufacturing process. For example, X-rays are used to inspect the inner layer of the tire for defects. The signal generated by the rays passing through the tire is fed back to the receiving device to image the tire. This allows the presence of internal defects such as faults, bubbles, and broken wires to be verified. The tires are then identified and graded based on the inspection results.

[0003] Existing tire defect detection devices and methods place the tire being inspected vertically on a conveyor line and drive an X-ray tube into the nozzle to capture X-ray images. Due to the heavy weight of tires, such as various types of engineering tires and truck tires, the tires placed on the conveyor line experience a certain degree of local deformation due to their own weight, which directly affects the accuracy of the test data. Calibration of tire inspection data was previously a tedious task, and the requirements for calibration have become even more stringent after the discovery of nonlinear tire imaging in X-ray machines. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a tire defect detection data calibration device and method.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a tire defect detection data calibration device, including a tire, on which an attachment mechanism is installed, the attachment mechanism is provided with a hook and an elastic Velcro, the hook is an integrally formed structure, one end of the hook is provided with a rectangular frame for connecting the elastic Velcro, the elastic Velcro is provided with a hook surface and a hairy surface, wherein the hairy surface is connected to the hook, and the hook surface is connected to the calibration block.

[0006] Preferably, the calibration block is a combined checkerboard structure, the calibration block is made of bearing steel, and the size of the calibration block is 25±0.01mm×25±0.01mm×3mm.

[0007] Preferably, the thickness of the hook is 3 mm.

[0008] Preferably, the hook is a structure suitable for an inner tube.

[0009] Preferably, the hook is a structure suitable for tubeless type.

[0010] A tire defect detection data calibration method includes a loading and unloading module and a data calibration module, wherein the loading and unloading module includes the following steps:

[0011] S101 selects the position of the tire that needs to be calibrated;

[0012] S102 selects a corresponding hook according to the tire size specification;

[0013] S103 hooks are placed on both sides of the inner edge of the tire and secured by tightening with elastic Velcro.

[0014] S104 pastes different combination calibration blocks according to the required measurement positions and the number of measurements;

[0015] S105 tires enter the X-ray machine for inspection;

[0016] After the test is completed, the calibration device is removed from the tire in step S106;

[0017] The data calibration module includes a new specification unit and a data calibration unit.

[0018] Preferably, the new specification unit includes the following steps:

[0019] S201: Attach several calibration blocks around the tire;

[0020] S202 puts the tire into an X-ray machine for photographing;

[0021] S203: identifying the sidewall area calibration block and the crown area calibration block;

[0022] S204 determines the conversion relationship according to the X-ray pixels and the calibration block size;

[0023] S205 records the current specifications and conversion relationship;

[0024] S206 The tire to be tested is measured using the above conversion relationship.

[0025] Preferably, the data calibration unit includes the following steps:

[0026] S301 affixes a data calibration block to the tire sidewall or tire crown;

[0027] S302 puts the tire into an X-ray machine for photographing;

[0028] S303 identifies the calibration block;

[0029] S304 determines the conversion relationship based on the X-ray pixels and the calibration block size;

[0030] S305 updates the current specification conversion relationship;

[0031] S306 The tire to be tested is measured using the above conversion relationship.

[0032] The present invention has the following beneficial effects:

[0033] (1) Solve the inconvenience of the current data calibration method of sticking tape and a single calibration block;

[0034] (2) Conveniently and quickly calibrate tires and data images;

[0035] (3) Various sizes of tires can be quickly matched through several combinations;

[0036] (4) Solve the irregularities of artificial chessboard combinations by using the existing chessboard arrangement layout;

[0037] (5) Solve the problem of low accuracy of calibration block. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a structural diagram of the present invention (1).

[0039] Figure 2 This is a structural schematic diagram of the present invention (2).

[0040] Figure 3 This is a structural schematic diagram of the present invention (3).

[0041] Figure 4 It is a structural schematic diagram of a hook suitable for an inner tube according to the present invention.

[0042] Figure 5 It is a schematic structural diagram of a tubeless hook according to the present invention.

[0043] Figure 6 It is a flow chart of the loading and unloading module of the present invention.

[0044] Figure 7 This is a flow chart of the data calibration module of the present invention.

[0045] In the figure: 1-tire; 2-hook; 3-attachment mechanism; 4-elastic Velcro; 5-calibration block. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] The embodiments of the present invention are as follows Figure 1-7 As shown, a tire defect detection data calibration device includes a tire 1, a hook 2, an attachment mechanism 3, an elastic Velcro 4 and a calibration block 5.

[0048] The hook 2 is formed by 3D printing in one piece according to the shape of the tire lip, and is designed according to the inner tube and tubeless forms. Figure 4 A hook 2 in the form of an inner tube, Figure 5 The hook 2 is a tubeless type and can perfectly fit various tire lip parts. The hook is made of plastic with a thickness of 3mm, which can reduce image fluctuations as much as possible while ensuring strength and toughness.

[0049] The attachment mechanism 3 is composed of a hook 2 and an elastic Velcro 4. The hairy surface of the elastic Velcro 4 is fixed to the hook 2, and the hook surface is fixed to the calibration block 5. The calibration block can be placed in any position or quantity. The elastic Velcro 4 uses a 100mm wide hairy surface for bearing, and the calibration blocks 5 are arranged in a checkerboard pattern. While ensuring matching accuracy, it is simple, convenient, and can be quickly disassembled. The bearing part adopts an elastic Velcro design. The hook surface is of fixed size and is used to connect and fix with the calibration block 5. The hairy surface is of elastic and variable size to adapt to tires of different sizes and can quickly hold the tire body, perfectly combining with the tire body. The hook surface is combined with the calibration block 5 and bonded to fix.

[0050] The elastic Velcro 4 is in an elastic form, the fleece surface is fixed to the hook 2, and the hook surface is fixed to the calibration block 5. The calibration block 5 can be placed at any position and any number of calibration blocks can be placed.

[0051] Calibration Block 5 utilizes a checkerboard design to quickly match various tire sizes. Made of bearing steel, Calibration Block 5 is rust-resistant and highly hard, and is not susceptible to thermal expansion or contraction due to temperature and other environmental factors. Calibration Block 5 utilizes a seven-level precision design, achieving the maximum precision currently available on grinders. Its dimensions are (25±0.01)×(25±0.01)×3. X-ray machines have a maximum accuracy of 0.3mm, and Calibration Block 5's accuracy is an order of magnitude higher, enabling precise matching of pixels to actual dimensions. To further enhance data calibration, arranging Calibration Block 5 in a checkerboard pattern facilitates algorithm optimization and precision adjustment, enabling coverage of all tire sizes.

[0052] The device uses elastic Velcro 4 and hook 2 to ensure close contact with the tire without affecting the penetration of X-rays into the tire. By sticking the calibration block 5 on the elastic Velcro 4, the calibration block 5 can be easily and quickly arranged around the tire in a checkerboard pattern. After processing, it can be scanned by an X-ray machine. The system automatically identifies the calibration block 5 and automatically matches the relationship between pixels and actual sizes according to the area.

[0053] A tire defect detection data calibration method includes a loading and unloading module and a data calibration module, wherein the loading and unloading module includes the following steps: first, selecting the position of the tire 1 to be calibrated, selecting the corresponding hook 2 according to the tire size specification, hanging the hook 2 on both sides of the inner edge of the tire and tightening and fixing it with elastic Velcro 4, and then pasting different combination calibration blocks 5 according to the position and number of measurements to be measured. Multiple calibration blocks can be pasted at the same time. After pasting, the blocks are placed in an X-ray machine and removed from the tire after the detection is completed for next use.

[0054] Data calibration module, the data calibration module includes a new specification unit and a data calibration unit.

[0055] The new specification unit includes the following steps:

[0056] S201: Attach several calibration blocks around the tire;

[0057] S202 puts the tire into an X-ray machine for photographing;

[0058] S203: identifying the sidewall area calibration block and the crown area calibration block;

[0059] S204 determines the conversion relationship according to the X-ray pixels and the calibration block size;

[0060] S205 records the current specifications and conversion relationship;

[0061] S206 The tire to be tested is measured using the above conversion relationship.

[0062] The data calibration unit includes the following steps:

[0063] S301 affixes a data calibration block to the tire sidewall or tire crown;

[0064] S302 puts the tire into an X-ray machine for photographing;

[0065] S303 identifies the calibration block;

[0066] S304 determines the conversion relationship based on the X-ray pixels and the calibration block size;

[0067] S305 updates the current specification conversion relationship;

[0068] S306 The tire to be tested is measured using the above conversion relationship.

[0069] This device and method is a set of tools for calibrating X-ray images to the actual tire size. The goal is to address the inconvenience of current data calibration methods, which rely on adhesive tape and individual calibration blocks. This device allows for quick and convenient calibration of tires and data images. The device can quickly match various tire sizes and types through several combinations. By utilizing an existing checkerboard layout, it addresses the issues of irregular checkerboard patterns and low calibration block accuracy caused by manual calibration.

[0070] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the guidance of the present invention, and any technical solutions that are the same or similar to those of the present invention, fall within the scope of protection of the present invention.

[0071] The technology, shape, and structure not described in detail in the present invention are all well-known technologies.

Claims

1. A tire defect detection data calibration device, characterized in that: The utility model comprises an attachment mechanism installed on the tire, which is provided with a hook and an elastic Velcro. The hook is an integrally formed structure, and a rectangular frame is provided at one end of the hook for connecting the elastic Velcro. The elastic Velcro has a hook surface and a hairy surface, wherein the hairy surface is connected to the hook, and the hook surface is connected to the calibration block. The calibration block is a combined checkerboard structure, and the calibration block is made of bearing steel. The size of the calibration block is (25±0.01) mm×(25±0.01) mm×3 mm. The thickness of the hook is 3 mm. The hook is suitable for a structure with an inner tube or a structure without an inner tube.

2. A tire defect detection data calibration method based on the tire defect detection data calibration device according to claim 1, characterized in that: It includes loading and unloading process and data calibration process, wherein the loading and unloading process includes the following steps: S101 selects the position of the tire that needs to be calibrated; S102 selects a corresponding hook according to the tire size specification; S103 hooks are placed on both sides of the inner edge of the tire and secured by tightening with elastic Velcro. S104 pastes different combination calibration blocks according to the required measurement positions and the number of measurements; S105 tires enter the X-ray machine for inspection; After the test is completed in step S106, the calibration device is removed from the tire; the data calibration process includes a new specification calibration process and a data calibration process; The new specification calibration process includes the following steps: S201: Attach several calibration blocks around the tire; S202 puts the tire into an X-ray machine for photographing; S203: identifying the sidewall area calibration block and the crown area calibration block; S204 determines the conversion relationship according to the X-ray pixels and the calibration block size; S205 records the current specifications and conversion relationship; S206 The tire to be tested is measured using the above conversion relationship.

3. The tire defect detection data calibration method according to claim 2, characterized in that: The data calibration process includes the following steps: S301 affixes a data calibration block to the tire sidewall or tire crown; S302 puts the tire into an X-ray machine for photographing; S303 identifies the calibration block; S304 determines the conversion relationship based on the X-ray pixels and the calibration block size; S305 updates the current specification conversion relationship; S306 The tire to be tested is measured using the above conversion relationship.

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