A detection device and a production line

Abstract

The present invention relates to the technical field of tire detection, and discloses a detection device and a production line. The detection device includes: a frame; a tire support assembly disposed on the frame, a tire to be tested can be sleeved on the tire support assembly, and the tire support assembly is configured to realize the expansion and rotation of the tire to be tested; a lifting detection assembly disposed on the frame; an ultrasonic detection assembly connected to the lifting detection assembly, the lifting detection assembly is configured to drive the ultrasonic detection assembly to reciprocate along the vertical direction and the central axis direction of the tire to be tested, and the ultrasonic detection assembly is configured to detect a cord layer region of a certain cross-section of the tire to be tested and the position of the cord layer region; a control assembly, the tire support assembly, the lifting detection assembly and the ultrasonic detection assembly are all electrically connected to the control assembly. The detection device is used to detect the position of the cord layer inside the tire, determine whether the cord layer deviates from the center of the tire, and whether the deviation amount is within the allowable range.

Description

Technical Field

[0001] The present invention relates to the technical field of tire detection, and particularly to a detection device and a production line. Background Art

[0002] The interior of a rubber tire contains multiple cord layers composed of non-conductive nylon materials. The depth of the cord layer is approximately 10 mm. Both the thickness of the rubber tire and the depth of the cord layer show irregular variations. For a qualified tire product, the overall cord layer area should deviate from the center line of the tire cross-section by no more than 10 mm.

[0003] For a tire with offset cords, uneven stress will occur during normal use, which will further exacerbate tire wear and affect the service life of the tire. Existing tire tests usually adopt non-destructive thickness detection methods, mainly including mechanical scanning method, electromagnetic induction method, laser measurement method, ultrasonic detection method, microwave detection method, ray detection method, etc.

[0004] Among them, the electromagnetic induction method of Michelin Company is the most widely used. In patent CN105393078B, the electromagnetic induction method is used to measure the tire thickness, and the qualification of the tire is judged by the detected thickness difference. This method measures the tire thickness through the electromagnetic induction effect between an external detection device and the conductive layer inside the tire. This method does not require disassembly of the tire, but requires a conductive layer inside the tire to be measured.

[0005] For other known measurement devices based on optical systems such as lasers and rays, their equipment is not only expensive, but also the reliability of the measurement is controversial because their measurement accuracy may be greatly disturbed by the presence of pollutants. In addition, existing measurement methods are all thickness detection methods, whose purpose is to detect whether the thickness of the tire meets the requirements. Whether the cord layer is offset and the amount of offset are not within the scope of their detection.

[0006] Currently, for the problem of cord offset in tires, manufacturers usually adopt the method of sampling and slicing for product detection, that is, several tires are selected as samples from a batch of tire products, and the tires are cut with processing tools. By observing the cross-section of the cut tires, it is judged whether the cord layer is offset and the specific offset situation, and then it is judged whether the tire product meets the standard requirements, and the qualified rate of this batch of tire products is calculated. However, using the method of sampling and slicing for product detection not only wastes products and increases the production cost of enterprises, but also the material of the tire after vulcanization and molding is relatively special, with large toughness, difficult to cut, and high processing cost.

[0007] Therefore, it is necessary to provide a detection device and a production line to solve the above problems. Summary of the Invention

[0008] The object of the present invention is to provide a detection device for detecting the position of the cord layer inside a tire, determining whether the cord layer is offset relative to the center of the tire, and whether the offset amount is within an allowable range.

[0009] Another object of the present invention is to provide a production line for realizing the full automation of tire detection.

[0010] To achieve this purpose, the present invention adopts the following technical solutions:

[0011] Provide a detection device, including:

[0012] A frame;

[0013] A tire support assembly is arranged on the frame, and the tire to be tested can be sleeved on the tire support assembly, and the tire support assembly is configured to realize the inflation and rotation of the tire to be tested;

[0014] A lifting detection assembly is arranged on the frame;

[0015] An ultrasonic detection assembly is connected to the lifting detection assembly. The lifting detection assembly is configured to drive the ultrasonic detection assembly to reciprocate in the vertical direction and along the central axis direction of the tire to be tested. The ultrasonic detection assembly is configured to detect the cord layer area of a certain cross-section of the tire to be tested and the position of the cord layer area;

[0016] A control assembly. The tire support assembly, the lifting detection assembly, and the ultrasonic detection assembly are all electrically connected to the control assembly.

[0017] Preferably, the tire support assembly includes:

[0018] A first driving member is arranged on the frame;

[0019] A rotating main shaft is arranged on the frame along the central axis direction of the tire to be tested, and the first driving member drives the rotating main shaft to rotate relative to the frame;

[0020] An expansion and contraction assembly is arranged at one end of the rotating main shaft and is suspended outside the frame. The tire to be tested can be sleeved on the expansion and contraction assembly, and the expansion and contraction assembly is configured to be able to inflate or release the tire to be tested.

[0021] Preferably, the expansion and contraction assembly includes:

[0022] Side plates are arranged on the rotating main shaft and can rotate synchronously with the rotating main shaft;

[0023] A second driving member and a gland push plate assembly, the second driving member being disposed on the side plate, the gland push plate assembly being sleeved on the rotating main shaft, and the second driving member driving the gland push plate assembly to reciprocate axially along the rotating main shaft;

[0024] A slide plate assembly, circumferentially and uniformly distributed along the rotating main shaft, the gland push plate assembly driving the slide plate assembly to reciprocate radially along the rotating main shaft for expanding or loosening the tire under test.

[0025] Preferably, the slide plate assembly includes:

[0026] Slide plates, which are circumferentially and uniformly distributed along the rotating main shaft;

[0027] Mounting shafts, disposed at one end of the slide plates away from the rotating main shaft, the mounting shafts being configured to support the tire under test.

[0028] Preferably, the detection device further includes a water tank, the water tank being disposed on the frame and located below the tire support assembly;

[0029] When detecting the tire under test, a part of the tire under test is immersed in water, and the ultrasonic detection assembly sends ultrasonic waves to the tire under test in the water.

[0030] Preferably, the detection device further includes a lifting assembly, the lifting assembly being disposed on the frame, the water tank being disposed on the lifting assembly, and the lifting assembly being capable of driving the water tank to lift vertically to adjust the depth of immersion of the tire under test in the water.

[0031] Preferably, the lifting assembly includes:

[0032] A third driving member, disposed on the frame and located below the first driving member;

[0033] A chain and sprocket assembly, the third driving member being driven by the chain and sprocket assembly to drive the water tank to reciprocate vertically.

[0034] Preferably, the lifting and detection assembly includes:

[0035] A slide table bracket, disposed on the water tank;

[0036] A first slide table and a second slide table, the first slide table being disposed on the slide table bracket, the second slide table being disposed on the first slide table, the ultrasonic detection assembly being disposed on the second slide table, and the first slide table and the second slide table being electrically connected to the control assembly;

[0037] The second sliding table drives the ultrasonic detection assembly to reciprocate vertically, and the first sliding table drives the second sliding table and the ultrasonic detection assembly to reciprocate along the central axis direction of the rotating main shaft.

[0038] Preferably, the ultrasonic detection assembly includes:

[0039] An arm, one end of which is arranged on the second sliding table;

[0040] An ultrasonic probe, which is arranged at the other end of the arm. The arm can drive the ultrasonic probe to immerse below the water surface of the water tank and be located below the tire to be tested that enters the water.

[0041] The present invention also provides a production line, including the detection device described above.

[0042] Beneficial effects of the present invention: In the present invention, the tire to be tested is supported by the tire support assembly. When detecting the tire to be tested, the tire to be tested is held by the tire support assembly, and the ultrasonic detection assembly detects the tire to be tested after installation. The ultrasonic detection assembly emits ultrasonic waves to the tire to be tested. At the same time, the lifting detection assembly can drive the ultrasonic detection assembly to reciprocate in the vertical direction and along the central axis direction of the tire to be tested, and can control the ultrasonic detection assembly to move along the outer circumference of a certain cross-section of the tire to be tested. The feedback signal obtained by emitting ultrasonic waves is transmitted to the control assembly, and the control assembly processes the obtained information and displays it. The cord layer area and the position of the cord layer area in a certain cross-section of the tire to be tested can be obtained. Then, the control assembly judges the size of the cord layer area deviating from the center line of this cross-section and determines whether it meets the product requirements, so as to realize the control of product quality.

[0043] In addition, the above-mentioned tire support assembly can drive the expanded tire to be tested to rotate, and can detect the cord layer areas and their positions at multiple cross-sections of the tire to be tested, thereby further ensuring the accuracy of the detection results of each tire to be tested. The above detection method adopts the ultrasonic principle, which has no requirements for the internal cord layer material, realizes the non-destructive detection of non-metallic material cords, and can change the ultrasonic penetration characteristics by adjusting the detection ultrasonic frequency to realize the resolution of different cord layers, with high detection accuracy and simple and easy-to-operate equipment. In the case where there is no conductive layer inside the tire to be tested, it can still realize the detection of the internal structure of the tire to be tested and determine whether the tire to be tested is qualified. At the same time, using ultrasonic waves for detection makes the detection head not need to contact the tire, will not cause wear to the detection head, and can detect the cord positions of various different-shaped tires without changing the equipment. In addition, introducing water as an intermediate medium reduces the influence of the tire surface topography on ultrasonic detection and improves the detection accuracy.

[0044] Meanwhile, during the detection process, it is not necessary to cut the tire to be tested, saving the test cost. Moreover, each tire to be tested can be detected to ensure the qualification rate of the tires to be tested. In addition, the above detection device also has the advantages of simple structure, low manufacturing cost, and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic diagram of a certain cross-section of the tire to be tested according to the present invention;

[0046] Figure 2 is a schematic structural diagram of the detection device according to the present invention;

[0047] Figures 3 - 4 is a schematic structural diagram of the detection device from different perspectives according to the present invention (excluding the machine case);

[0048] Figure 5 is a partial structural diagram of the tire support assembly according to the present invention (excluding the machine case and the display assembly);

[0049] Figure 6 is a partial structural diagram of the tire support assembly according to the present invention;

[0050] Figure 7 is a schematic structural diagram of the expansion and contraction assembly and the rotating main shaft according to the present invention;

[0051] Figure 8 is a schematic structural diagram of the lifting detection assembly, the water tank, and a part of the lifting assembly according to the present invention;

[0052] Figure 9 is a schematic structural diagram of the frame, the lifting assembly, and the lifting detection assembly according to the present invention.

[0053] In the figures:

[0054] 1. Frame; 10. Machine case;

[0055] 2. Tire support assembly; 21. First driving member; 22. Rotating main shaft;

[0056] 23. Expansion and contraction assembly; 231. Side plate; 2311. Inner side plate; 2312. Outer side plate; 232. Second driving member; 233. Pressing cover and pushing plate assembly; 2331. Pressing cover; 2332. Pushing plate; 234. Slide plate assembly; 2341. Slide plate; 23411. Guide groove; 2342. Mounting shaft; 2343. Spacer block; 2344. Protective sleeve; 2345. Baffle; 235. Rolling wheel;

[0057] 24. Bushing; 25. Guide sliding assembly; 26. Belt pulley assembly; 27. Support seat;

[0058] 3. Lifting detection component; 31. Slide table bracket; 32. First slide table; 33. Second slide table; 34. Slide table connecting plate;

[0059] 4. Tire to be measured;

[0060] 6. Ultrasonic detection component; 61. Arm; 62. Ultrasonic probe;

[0061] 7. Water tank; 8. Lifting component; 81. Third driving part; 82. Chain and sprocket assembly; 83. Support frame; 84. Chain fixing plate;

[0062] 90. Display component; 901. Mounting component; 9011. Connecting part; 9012. Adjusting part; 9013. L-shaped support part; 9014. Rotating part; 902. Display; Detailed implementation mode

[0063] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation modes.

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0065] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0066] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0067] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0068] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal level than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal level than the second feature.

[0070] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation on the present invention.

[0071] As Figure 1 shown, Figure 1 is a schematic cross-sectional view of the tire 4 to be measured. The area A formed by the white dots in the figure is the cord layer area inside the tire 4 to be measured, which is the area to be detected for the cord layer, and the position of the cord layer area and the offset distance from the central axis of the cross-section of the tire 4 where the cord layer area is located, that is Figure 1 at the center line position in

[0072] The starting point of the present invention is to detect the position of the cord layer area of the tire 4 to be measured through a dedicated device, and then determine whether the cord layer area is offset relative to the central axis of the cross-section where it is located, and whether the offset amount is within the allowable range, and finally determine whether the product meets the product requirements and achieve quality control of the product.

[0073] The above dedicated device is the detection device provided in this embodiment. As Figure 2 shown, the above detection device includes a frame 1, a tire support assembly 2, a lifting detection assembly 3, an ultrasonic detection assembly 6 and a control assembly. Among them, as Figure 2 shown, the frame 1 is a frame structure assembled by angle steel or square tubes, etc. The above tire support assembly 2, lifting detection assembly 3 and control assembly are all arranged on the frame 1. The above tire support assembly 2, lifting detection assembly 3 and ultrasonic detection assembly 6 are all electrically connected to the control assembly. The above tire support assembly 2, lifting detection assembly 3 and ultrasonic detection assembly 6 all belong to the mechanical part of the detection device, and mainly complete actions such as clamping, rotating the tire 4 to be measured, and testing the tire 4 to be measured with ultrasonic waves. The control assembly is the electrical part of the detection device, responsible for controlling and coordinating the actions of the detection platform, obtaining the test signals of the tire 4 to be measured, comparing them with the judgment criteria preset in the system internal program, determining whether the cord layer area inside the tire 4 to be measured meets the standard, and providing a visual result interface. The control assembly can display waveforms synchronously and automatically store test data and detection results.

[0074] During detection, the above tire 4 to be measured is sleeved on the tire support assembly 2, and the tire support assembly 2 can realize the expansion and holding of the tire 4 to be measured and drive the tire 4 to be measured to rotate. The lifting detection assembly 3 is arranged on the frame 1, the ultrasonic detection assembly 6 is arranged on the lifting detection assembly 3, the lifting detection assembly 3 is configured to drive the ultrasonic detection assembly 6 to reciprocate in the vertical direction and the central axis direction of the tire 4 to be measured, and the ultrasonic detection assembly 6 is used to detect the cord layer area and the position of the cord layer area of the cross-section of the tire 4 to be measured. The central axis direction of the above tire 4 to be measured refers to the direction of the central axis of the tire 4 to be measured in the state where the tire 4 to be measured is expanded and held on the tire support assembly 2.

[0075] In this embodiment, the test tire 4 is supported by the tire support assembly 2. When detecting the test tire 4, the tire support assembly 2 is used to expand and hold the test tire 4, and the ultrasonic detection assembly 6 detects the test tire 4 after installation. The ultrasonic detection assembly 6 emits ultrasonic waves to the test tire 4. At the same time, the lifting detection assembly 3 can drive the ultrasonic detection assembly 6 to reciprocate in the vertical direction and the central axis direction of the test tire 4, and can control the ultrasonic detection assembly 6 to move along the outer circumference of a certain cross-section of the test tire 4. The feedback signal obtained by emitting ultrasonic waves is transmitted to the control assembly. The control assembly processes the obtained information and displays it, and the cord layer area and the position of the cord layer area in a certain cross-section of the test tire 4 can be obtained. Then, the control assembly judges the size of the cord layer area deviating from the center line of this cross-section and determines whether it meets the product requirements, so as to realize the control of product quality. In addition, the above-mentioned tire support assembly 2 can drive the expanded test tire 4 to rotate, and can detect the cord layer areas and their positions at multiple cross-sections of the test tire 4, so as to further ensure the accuracy of the detection results of each test tire 4. The above detection method adopts the ultrasonic principle, which has no requirements for the internal cord layer material, can distinguish different cord layers, has high detection accuracy, and the equipment is simple and easy to operate. In the case that there is no conductive layer inside the test tire 4, it is still possible to detect the internal structure of the test tire 4 and determine whether the test tire 4 is qualified. At the same time, the test tire 4 does not need to be cut during the detection process, saving the test cost, and each test tire 4 can be detected to ensure the qualification rate of the test tire 4. In addition, the above detection device also has the advantages of simple structure, low manufacturing cost and convenient operation.

[0076] Continue to refer to Figure 2 As shown, an outer casing 10 is provided outside the above-mentioned frame 1. The tire support assembly 2 extends outside the outer casing 10 for supporting the test tire 4, and the lifting detection assembly 3 and the ultrasonic detection assembly 6 are located outside the outer casing 10.

[0077] As Figure 2 shown, the above-mentioned control assembly includes a display assembly 90. The display assembly 90 is arranged on the frame 1 and is used to display the detection results, perform human-machine interaction, and facilitate the operation of the detector. Specifically, for the convenience of the operator's standing operation and saving installation space, the display assembly 90 is arranged on one side of the outer casing 10.

[0078] Further specifically, in order to enable the display assembly 90 to be suitable for different operators during the operation process, the display assembly 90 needs to be able to adjust its own position and angle. The display assembly 90 includes a display 902 and a mounting assembly 901. The display 902 is mounted on the mounting assembly 901, and the mounting assembly 901 is mounted on the frame 1. The mounting assembly 901 is configured to adjust the position of the display 902 relative to the frame 1. The above-mentioned mounting assembly 901 is mounted on the outer casing 10 of the frame 1, as Figure 2 、3 and Figure 4 As shown in Figure 4 , the mounting assembly 901 includes a connecting member 9011, an adjusting member 9012, an L-shaped support member 9013, and a rotating member 9014. Among them, the connecting member 9011 is fixedly installed on the casing 10. The connecting member 9011 can rotate around its own axis arranged in the vertical direction, that is, rotate around the Y direction. The adjusting member 9012 is a tubular member. The two ends of the adjusting member 9012 are respectively inserted into the connecting member 9011 and the L-shaped support member 9013. By adjusting the size of the adjusting member 9012 entering the connecting member 9011 and the L-shaped support member 9013, the position of the display 902 relative to the casing 10 is adjusted, that is, the position in the X direction. A rotating member 9014 is provided at the upper end of the L-shaped support member 9013. The L-shaped support member 9013 is connected to the display 902 through the rotating member 9014, and the display 902 can rotate around the Y axis. Therefore, the positions of the display 902 in the X and Y directions are adjusted respectively through the connecting member 9011 and the adjusting member 9012. Through the L-shaped support member 9013 and the rotating member 9014, the display 902 can rotate and then adjust its angle with the casing 10. The above-mentioned rotating member 9014 is a bearing. In addition, an operating table is also provided on the display 902, which is convenient for placing other items during work.

[0079] Figure 4 and Figure 5 The positions of the tire support assembly 2 and the frame 1 are shown in Figure 5 . To enable the tire support assembly 2 to tightly support the tire under test 4 and drive the tire under test 4 to rotate during the detection of the tire under test 4, as Figure 6 shown, the above-mentioned tire support assembly 2 includes a first driving member 21, a rotating main shaft 22, and an expansion and contraction assembly 23. Among them, the first driving member 21 is arranged on the frame 1. Specifically, in this embodiment, the first driving member 21 is arranged on the top of the frame 1, and the first driving member 21 is a motor. The first driving member 21 drives the rotating main shaft 22 to rotate relative to the frame 1 through a belt and pulley assembly 26, that is, the rotating main shaft 22 rotates along the Z direction. Two support seats 27 arranged at intervals along the Z direction are also provided on the top of the frame 1 for supporting the rotation of the rotating main shaft 22. One end of the rotating main shaft 22 extends out of the casing 10, and the expansion and contraction assembly 23 is arranged at this end of the rotating main shaft 22. A counterweight is arranged at the other end of the rotating main shaft 22. When testing the tire under test 4, the tire under test 4 is sleeved on the expansion and contraction assembly 23, and the expansion and contraction assembly 23 is configured to expand and hold or release the tire under test 4. The counterweight is used to balance the expansion and contraction assembly 23 and the tire under test 4 on the rotating main shaft 22.

[0080] As Figure 7As shown in the figure, the above-mentioned expansion and contraction assembly 23 includes a side plate 231, a second driving member 232, a gland push plate assembly 233, and a slide plate assembly 234. Among them, the side plate 231 is arranged on the rotating main shaft 22 and rotates synchronously with the rotating main shaft 22. The second driving member 232 is arranged on the side plate 231. The gland push plate assembly 233 is sleeved on the rotating main shaft 22, and the second driving member 232 drives the gland push plate assembly 233 to slide reciprocally along the axial direction of the rotating main shaft 22. Specifically, in this embodiment, the side plate 231 includes an inner side plate 2311 and an outer side plate 2312. The inner side plate 2311 is sleeved on the rotating main shaft 22, and the outer side plate 2312 is detachably connected to the end of the rotating main shaft 22, and the two are axially spaced apart by a preset distance. The second driving member 232 is detachably connected to the inner side plate 2311, and the second driving member 232 is a cylinder. The second driving member 232 is at least one. In this embodiment, the second driving member 232 is two and is arranged at an interval of 180°.

[0081] The above-mentioned slide plate assembly 234 is connected to the gland push plate assembly 233. There are four groups of slide plate assemblies 234, which are evenly distributed along the circumferential direction of the rotating main shaft 22. During the process of the gland push plate assembly 233 sliding reciprocally along the central axis direction of the rotating main shaft 22, it drives the slide plate assembly 234 to move reciprocally along the radial direction of the rotating main shaft 22. Specifically, the tire 4 to be measured is sleeved on the slide plate assembly 234, and the slide plate assembly 234 expands or contracts radially, so as to realize tightening or loosening the tire 4 to be measured. Specifically, the above-mentioned gland push plate assembly 233 includes a gland 2331 and a push plate 2332. The gland 2331 is sleeved on the rotating main shaft 22, and a bushing 24 is arranged between the gland 2331 and the rotating main shaft 22 to provide guidance for the gland 2331 to move in the Z direction. At the same time, the bushing 24 is wear-resistant to ensure the smoothness of the gland 2331 sliding. The above-mentioned bushing 24 is an oil-free bushing 24. The push plate 2332 is detachably connected to the gland 2331, and the push plate 2332 is rolling-connected to the slide plate assembly 234. When the gland 2331 and the push plate 2332 slide synchronously along the Z axis, the slide plate assembly 234 is pushed to move reciprocally along the radial direction through the push plate 2332.

[0082] More specifically, the above-mentioned skateboard assembly 234 is located between the inner plate 2311 and the outer plate 2312. The skateboard assembly 234 includes a skateboard 2341, a spacer 2343, and a mounting shaft 2342. Among them, the skateboards 2341 are evenly distributed along the circumferential direction of the rotating main shaft 22, and the skateboards 2341 can slide reciprocally along the radial direction of the rotating main shaft 22. In this embodiment, there are four skateboards 2341. Rolling wheels 235 are arranged on the above-mentioned push plate 2332, and corresponding guide grooves 23411 are arranged on the skateboards 2341. When the push plate 2332 slides reciprocally along the Z direction, the skateboards 2341 are driven to move reciprocally along the radial direction of the rotating main shaft 22 through the rolling wheels 235 moving along the guide grooves 23411. Thus, the axial movement of the push plate 2332 is converted into the radial movement of the skateboards 2341. In this embodiment, since the second driving member 232 is arranged on the inner plate 2311, therefore, the guide grooves 23411 of the skateboards 2341 are inclined upward in the direction from the inner plate 2311 to the outer plate 2312.

[0083] To ensure the movement accuracy of the skateboards 2341 along the radial direction of the rotating main shaft 22, a guide sliding assembly 25 is arranged between each skateboard 2341 and the inner plate 2311 and the outer plate 2312. Preferably, the guide sliding assembly 25 is a slide rail and slider assembly. Further preferably, the skateboard assembly 234 further includes a spacer 2343 and a mounting shaft 2342. Among them, a spacer 2343 is arranged at one end of each skateboard 2341 away from the rotating main shaft 22. Mounting shafts 2342 are arranged at one ends of the spacers 2343 away from the rotating main shaft 22, and the mounting shafts 2342 are configured to support the tire 4 to be tested. The connection strength of the mounting shafts 2342 is enhanced through the spacers 2343, thereby increasing the strength of supporting the tire 4 to be tested. At the same time, by arranging the reinforcement structure, the production cost can also be reduced.

[0084] Further preferably, to protect the tire 4 to be tested from being damaged secondarily during the test, a protective sleeve 2344 is also arranged on the above-mentioned mounting shaft 2342. The material of the protective sleeve 2344 in this embodiment is nylon, which is easy to process and has a low cost. When testing the tire 4 to be tested, in order to axially position the tire 4 to be tested, a baffle 2345 is arranged at one end of the above-mentioned mounting shaft 2342 close to the inner plate 2311. The above-mentioned baffle 2345 is also made of a combination of nylon and rubber materials. When detecting the tire 4 to be tested, when the tire 4 to be tested is clamped, the inner diameter surface of the tire 4 to be tested is in direct contact with the protective sleeve 2344 made of nylon material, and the end surface of the tire 4 to be tested is in contact with the baffle 2345 made of nylon material. The nylon material can protect the contact surface of the tire 4 to be tested and avoid secondary damage to the tire 4 to be tested by the detection device.

[0085] In other embodiments, the above-mentioned second driving member 232 can also be arranged on the outer plate 2312 or other fixing members, as long as it can ensure that the push cover and push plate assembly 233 slides reciprocally along the Z direction.

[0086] After 4 sets of tires to be tested are sleeved on the tire support assembly 2, the first driving member 21 drives the tire support assembly 2 and the tires to be tested 4 to rotate together by rotating the main shaft 22 for testing.

[0087] The above ultrasonic detection device is transmitted with air as the medium. To further enhance the effect of ultrasonic detection, as Figures 2 - 4 and Figure 8 shown. The detection device in this embodiment further includes a water tank 7 arranged on the frame 1, Figures 2 - 4 The positional relationship between the water tank and other structures is shown in Figure 5 and Figure 8 The positional relationship between the lifting detection assembly 3 and the water tank is shown in. During detection, water is filled in the water tank 7, and part of the tire 4 to be tested is immersed in the water tank 7. Water is used as the conduction medium of ultrasonic waves, avoiding the influence of uneven surfaces on the propagation of ultrasonic waves and the formation of measurement blind areas. To prevent the water tank 7 from rusting and affecting water quality, it is preferred that the water tank 7 is a stainless steel water tank.

[0088] Specifically, the above water tank 7 is arranged below the tire support assembly 2. When detecting the tire 4 to be tested, a part of the lower half circle of the tire 4 to be tested can enter the water in the water tank 7. The lifting detection assembly 3 drives the ultrasonic detection assembly 6 to scan a certain underwater section of the tire 4 to be tested, and a complete and clear ultrasonic echo signal can be obtained to obtain a clearer cord layer area and its position inside the section.

[0089] To further accurately adjust the depth of the tire 4 to be tested immersed in the water of the water tank 7 and also adapt to the detection of tires 4 to be tested with different diameters. As Figure 5 shown, the above detection device further includes a lifting assembly 8. The lifting assembly 8 is arranged on the frame 1, the water tank 7 is connected to the lifting assembly 8, the lifting assembly 8 is arranged below the main shaft 22, and the lifting assembly 8 drives the water tank 7 to reciprocate in the vertical direction so that the depth of tires 4 to be tested with different diameters immersed in water is in a suitable position.

[0090] When detecting the tire 4 to be tested, after the position of the tire 4 to be tested in the water tank 7 is adjusted properly, to reduce the movement stroke of the ultrasonic detection assembly 6, the lifting detection assembly 3 is connected to the water tank 7. When the position of the water tank 7 is adjusted, the lifting detection assembly 3 and the ultrasonic detection assembly 6 move synchronously. Then, the lifting detection assembly 3 is used to drive the ultrasonic detection assembly 6 to adjust, and at the same time, drive the ultrasonic detection assembly 6 to move along the outer peripheral wall of a certain section of the tire 4 to be tested, so as to detect the cord layer area and its position inside the tire 4 to be tested.

[0091] Continue to refer to Figure 8As shown, the above-mentioned lifting detection component 3 includes a slide table bracket 31, a first slide table 32, and a second slide table 33. The first slide table 32 and the second slide table 33 are both electrically connected to the control component, and the control component controls the actions of the first slide table 32 and the second slide table 33. The slide table bracket 31 is connected to the water tank 7 and is used to support the first slide table 32 and the second slide table 33. Specifically, the second slide table 33 is arranged on the first slide table 32, and the ultrasonic detection component 6 is arranged on the second slide table 33. The second slide table 33 drives the ultrasonic detection component 6 to reciprocate vertically, and the first slide table 32 drives the second slide table 33 and the ultrasonic detection component 6 to reciprocate along the Z direction. The above-mentioned first slide table 32 and the second slide table 33 are both servo slide tables. Through the first slide table 32 and the second slide table 33, the ultrasonic detection component 6 can reciprocate relative to the water tank 7 along the Y direction and the Z direction.

[0092] Specifically, the above-mentioned lifting detection component 3 further includes a slide table connecting plate 34. The slide table connecting plate 34 is connected to the first slide table 32, and the second slide table 33 is arranged on the slide table connecting plate 34. The first slide table 32 drives the slide table connecting plate 34 to slide, thereby driving the second slide table 33 to move. The first slide table 32 and the second slide table 33 enable the ultrasonic detection component 6 to have two degrees of freedom, realizing that the ultrasonic detection component 6 can move along the complex cross-section of the tire 4 to be measured, ensuring the test accuracy. In addition, to ensure the movement stroke of the second slide table 33, that is, to ensure the stroke of the ultrasonic detection component 6 thereon, a displacement sensor is arranged on the slide table connecting plate 34.

[0093] The above ultrasonic detection assembly 6 includes a support arm 61 and an ultrasonic probe 62. One end of the support arm 61 is arranged on the second slide 33, and the ultrasonic probe 62 is arranged at the other end of the support arm 61. The ultrasonic probe 62 can be immersed in the water of the water tank 7. The above support arm 61 is made of stainless steel, and the ultrasonic probe 62 is an immersion ultrasonic probe. During detection, the lifting assembly 8 drives the lifting detection assembly 3, the ultrasonic detection assembly 6 and the water tank 7 to move up and down along the slide rail and slider assembly, adjusting the distance between the tire 4 to be measured and the water surface in the water tank. When the position where the bottom of the tire 4 to be measured enters the water is appropriate, drive the movement of the first slide 32 and the second slide 33 to make the ultrasonic probe 62 in a suitable position, that is, to obtain a complete and clear ultrasonic echo signal as the standard. After the position adjustment is completed, the ultrasonic probe 62 runs from one side of the cross-section of the tire 4 to be measured along the cross-sectional shape of the tire 4 to be measured to the other side, realizing the moving measurement along the cross-sectional shape of the tire 4 to be measured, so as to complete the entire scanning process of the tire 4 to be measured. In the present invention, ultrasonic waves are first applied to the detection of the position of tire cords, realizing the non-destructive detection of non-metallic material cords. By adjusting the frequency of the detected ultrasonic waves, the detection effect can be changed. For example, using low-frequency ultrasonic waves can detect the inner cords in multiple layers of cords. Water is introduced as an intermediate medium to reduce the influence of the tire surface topography on ultrasonic detection and improve the detection accuracy. When using ultrasonic waves for detection, the detection head does not need to contact the tire, which will not cause wear to the detection head. At the same time, the position of the cords of various different-shaped tires can be detected without changing the equipment.

[0094] As Figure 9 shown, the above lifting assembly 8 includes a third driving member 81, a chain and sprocket assembly 82 and a support frame 83. Among them, the third driving member 81 is arranged on the frame 1 and is located below the first driving member 21. In this embodiment, the third driving member 81 is a motor. Figure 8 The water tank 7 in

[0095] is arranged on the support frame 83. The third driving member 81 drives the support frame 83 and the water tank 7 to reciprocate in the vertical direction through the chain and sprocket assembly 82, so that the depth at which the tire 4 to be measured is immersed in water is at an appropriate depth. The above chain and sprocket assembly 82 is connected to the support frame 83 through a chain fixing plate 84, thereby driving the support frame 83, the water tank 7 and the lifting detection assembly 3 to move up and down in the vertical direction.

[0096] The working principle of the detection device in this embodiment is as follows:

[0097] During detection, the tire support assembly 2 expands to hold the tire 4 to be measured, and the lifting assembly 8 drives the water tank 7 and the ultrasonic detection assembly 6 to adjust the position in the vertical direction, so that the tire 4 to be measured is immersed in water to an appropriate depth. The lifting detection assembly 3 adjusts the position of the ultrasonic detection assembly 6 to immerse the ultrasonic probe 62 in water. After that, the position of the ultrasonic probe 62 is mechanically adjusted until a clear and complete ultrasonic echo is obtained. The mutual cooperation of the first slide 32 and the second slide 33 enables the ultrasonic probe 62 to move from one side of the tire 4 to be measured along the outer circumference of the tire 4 to the other side, completing the scanning of a certain cross-section of the tire 4 to be measured, and transmitting the echo signal to the control assembly. The information processed by the control assembly is displayed on the display 902 of the display assembly 90, so as to obtain the cord layer area in this cross-section and the size of its deviation from the center line of this cross-section, and determine whether the tire 4 to be measured is qualified. After detecting this cross-section, the tire support assembly 2 drives the tire 4 to be measured to rotate a predetermined angle, and then re-detects another cross-section. Each tire 4 to be measured is selected to detect at least 2 cross-sections according to actual needs.

[0098] In this embodiment, a production line is also provided, including the above detection device. This production line further includes a manipulator for automatically picking and placing the tire 4 to be measured. The production line using the above cord detection device for the tire 4 to be measured can realize the automatic detection of the tire 4 to be measured. At the same time, it is also beneficial to the realization of the complete automation of the detection of the tire 4 to be measured, improving production efficiency and reducing production costs.

[0099] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A detection device for detecting whether the tire cord layer is offset, characterized in that, Comprising: A frame (1); A tire support assembly (2) disposed on the frame (1), and a tire under test (4) can be sleeved on the tire support assembly (2), and the tire support assembly (2) is configured to achieve the expansion and rotation of the tire under test (4); A lifting detection assembly (3) disposed on the frame (1); An ultrasonic detection assembly (6) connected to the lifting detection assembly (3), the lifting detection assembly (3) is configured to drive the ultrasonic detection assembly (6) to reciprocate in the vertical direction and along the central axis direction of the tire under test (4), and the ultrasonic detection assembly (6) is configured to detect the cord layer area of a certain cross-section of the tire under test (4) and the position of the cord layer area; A control assembly, and the tire support assembly (2), the lifting detection assembly (3) and the ultrasonic detection assembly (6) are all electrically connected to the control assembly; The tire support assembly (2) includes: A first driving member (21) disposed on the frame (1); A rotating main shaft (22) disposed on the frame (1) along the central axis direction of the tire under test (4), and the first driving member (21) drives the rotating main shaft (22) to rotate relative to the frame (1); An expansion and contraction assembly (23) disposed at one end of the rotating main shaft (22) and suspended outside the frame (1), and the tire under test (4) can be sleeved on the expansion and contraction assembly (23), and the expansion and contraction assembly (23) is configured to be able to expand and hold or release the tire under test (4); The expansion and contraction assembly (23) includes: Side plates (231) disposed on the rotating main shaft (22) and capable of rotating synchronously with the rotating main shaft (22); A second driving member (232) and a gland push plate assembly (233), the second driving member (232) is disposed on the side plate (231), the gland push plate assembly (233) is sleeved on the rotating main shaft (22), and the second driving member (232) drives the gland push plate assembly (233) to reciprocate axially along the rotating main shaft (22); Skateboard assemblies (234) evenly distributed circumferentially along the rotating main shaft (22), and the gland push plate assembly (233) drives the skateboard assemblies (234) to reciprocate radially along the rotating main shaft (22) for expanding and holding or releasing the tire under test (4); The gland push plate assembly (233) includes a gland (2331) and a push plate (2332). The gland (2331) is sleeved on the rotating main shaft (22); the push plate (2332) is detachably connected to the gland (2331), and the push plate (2332) is in rolling connection with the slide plate assembly (234). The slide plate assembly (234) includes a slide plate (2341). A rolling wheel (235) is arranged on the push plate (2332), and a guide groove (23411) is correspondingly arranged on the slide plate (2341). When the gland (2331) and the push plate (2332) slide synchronously along the Z-axis, the rolling wheel (235) moves along the guide groove (23411) to push the slide plate assembly (234) to reciprocate radially.

2. The detection device according to claim 1, wherein the slide plates (2341) are evenly distributed along the circumferential direction of the rotating main shaft (22); the slide plate assembly (234) further includes a mounting shaft (2342) arranged at one end of the slide plate (2341) far from the rotating main shaft (22), and the mounting shaft (2342) is configured to support the tire under test (4).

3. The detection device according to claim 1, wherein The detection device further includes a water tank (7) arranged on the frame (1) and located below the tire support assembly (2); When detecting the tire under test (4), a part of the tire under test (4) is immersed in water, and the ultrasonic detection assembly (6) sends ultrasonic waves to the tire under test (4) in the water.

4. The detection device according to claim 3, characterized in that, The detection device further includes a lifting assembly (8) arranged on the frame (1), and the water tank (7) is arranged on the lifting assembly (8). The lifting assembly (8) can drive the water tank (7) to lift vertically to adjust the depth of the tire under test (4) immersed in water.

5. The detection device according to claim 4, wherein The lifting assembly (8) includes: A third driving member (81) arranged on the frame (1) and located below the first driving member (21); A chain and sprocket assembly (82), and the third driving member (81) is driven by the chain and sprocket assembly (82) to drive the water tank (7) to reciprocate vertically.

6. The detection device according to claim 3, wherein, The lifting and detection assembly (3) includes: A slide table bracket (31) arranged on the water tank (7); A first slide table (32) and a second slide table (33). The first slide table (32) is arranged on the slide table bracket (31), the second slide table (33) is arranged on the first slide table (32), and the ultrasonic detection assembly (6) is arranged on the second slide table (33). The first slide table (32) and the second slide table (33) are electrically connected to the control assembly; The second slide table (33) drives the ultrasonic detection assembly (6) to reciprocate vertically, and the first slide table (32) drives the second slide table (33) and the ultrasonic detection assembly (6) to reciprocate along the central axis direction of the rotating main shaft (22).

7. The detection device according to claim 6, wherein, The ultrasonic detection assembly (6) includes: The support arm (61), one end of which is arranged on the second sliding table (33); The ultrasonic probe (62) is arranged at the other end of the support arm (61), and the support arm (61) can drive the ultrasonic probe (62) to immerse below the water surface of the water tank (7) and below the to-be-tested tire (4) entering the water.

8. A production line, characterized in that, Comprising the detection device according to any one of claims 1-7.

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