Tire defect automatic detection system and method

Abstract

The invention relates to a tire defect automatic detection system and method. The system comprises a data acquisition module, a control module, a tire supporting module, an image acquisition module and a tire shifting module, wherein the data acquisition module acquires bar code data of a to-be-detected tire and sends the bar code data to the control module; the control module receives the bar code data, identifies the specification of the tire to be detected, generates a first control instruction, and controls the tire supporting module to adjust the tire clamping stroke and the tire supporting stroke based on the first control instruction; based on the adjusted tire clamping stroke and the adjusted tire supporting stroke, an image acquisition module acquires internal image data of the to-be-detected tire; and based on the internal image data, when the control module judges that the to-be-detected tire is a defective tire, a second control instruction is generated, and based on the second control instruction, the tire shifting module is controlled to shift away from the defective tire. Compared with the prior art, the method has the advantages of further improving the detection efficiency and the intelligent level of a production line and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial automation and quality inspection of tires, and in particular to a tire defect automatic inspection system and method. Background Art

[0002] With the continuous development of the tire industry, my country is in the stage of gradual transition from the traditional bias structure to the radial structure. This structural development aims to improve tire performance and extend service life, and also meets the new requirements of green, low-carbon, energy saving and consumption reduction. However, this development has brought about the complexity of tire manufacturing processes, and at the same time has posed higher challenges to product quality and safety. Major tire manufacturers must implement strict testing measures before delivering products to the market to ensure that the quality and safety of each tire meet the standards. The implementation of the tire defect detection system requires the completion of automatic collection of tire barcode information, tire weighing management, automatic identification of tire specifications, automatic tire support to enter the X-ray room for defect detection, and automatic removal of defective tires.

[0003] However, the above-mentioned links in the prior art still have a low degree of automation, which seriously affects the detection efficiency and the intelligence level of the production line. Due to the harsh environment of the factory workshop, such as strong vibration and dust, the high-precision grating equipment has been damaged to a certain extent, resulting in these devices being unable to work normally. In addition, the tire defect detection system in many workshops of the factory does not realize the function of automatically removing defective tires from the production line. Therefore, tire specification identification and automatic removal of defective tires still require manual operation by on-site workers. This not only leads to low detection efficiency and affects production speed, but also increases labor costs. At the same time, the existing tire defect detection system can only detect whether the tire meets the qualified standards, but cannot automatically save and reasonably use the large amount of data generated after the test, especially the tire defect type data. This problem cannot provide valuable feedback information for the improvement of the production process and quality control. Therefore, how to further improve the detection efficiency and the intelligence level of the production line has become a problem that needs to be solved in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a tire defect automatic detection system and method in order to overcome the defects of the above-mentioned prior art that tire specification identification and tire shifting functions require manual operation, resulting in low detection efficiency and high labor costs and failure to provide valuable feedback information.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] According to a first aspect of the present invention, there is provided an automatic tire defect detection system, comprising a data acquisition module, a control module, a tire support module, an image acquisition module and a tire removal module, wherein the data acquisition module acquires barcode data of a tire to be detected and sends it to the control module; the control module receives the barcode data, identifies the specification of the tire to be detected, generates a first control instruction, and based on the first control instruction, controls the tire support module to adjust a tire clamping stroke and a tire support stroke; based on the adjusted tire clamping stroke and tire support stroke, the image acquisition module acquires internal image data of the tire to be detected; based on the internal image data, when the control module determines that the tire to be detected is a defective tire, a second control instruction is generated, and based on the second control instruction, controls the tire removal module to remove the defective tire.

[0007] As a preferred technical solution, the control module includes a host computer and a PLC control unit. The host computer is used to generate the first control instruction and the second control instruction and store the received data. The PLC control unit is used to control the tire support module and the tire shifting module to respectively perform corresponding actions and store the received data.

[0008] As a preferred technical solution, the PLC control unit is provided with a timer.

[0009] As a preferred technical solution, the PLC control unit includes a first controller and a second controller, and the second controller is used to realize communication between the host computer and the first controller.

[0010] As a preferred technical solution, the tire shifting module includes a tire shifting circuit, which includes a relay, one end of the coil of the relay is connected to the output end of the second controller, and the other end is connected to zero potential, and a group of normally open contacts of the relay is connected in parallel with the control button.

[0011] As a preferred technical solution, the second controller is S7-1200PLC.

[0012] As a preferred technical solution, the control module receives the barcode data, identifies the specifications of the tire to be tested, generates a first control instruction, and based on the first control instruction, controls the tire support module to adjust the tire clamping stroke and the tire support stroke. The specific process includes: the host computer determines the model of the tire to be tested according to the barcode data, and based on a pre-built tire specification standard database, obtains the tire inner and outer diameter data corresponding to the model of the tire to be tested, generates and sends the first control instruction; the PLC control unit receives the first control instruction, and controls the tire support module to adjust the tire clamping stroke and the tire support stroke.

[0013] As a preferred technical solution, the data acquisition module is also used to acquire weight data of the tire to be tested and send it to the control module, and the control module receives the weight data.

[0014] As a preferred technical solution, the tire support module includes a tire clamp and a tire support, and the image acquisition module includes an X-ray machine room.

[0015] According to a second aspect of the present invention, there is provided a method for automatic tire defect detection, comprising the following steps: acquiring barcode data of a tire to be detected; based on the barcode data, identifying the specification of the tire to be detected, generating a first control instruction, and based on the first control instruction, controlling the adjustment of the tire clamping stroke and the tire support stroke; based on the adjusted tire clamping stroke and the tire support stroke, collecting internal image data of the tire to be detected; based on the internal image data, when the tire to be detected is determined to be a defective tire, generating a second control instruction, and based on the second control instruction, controlling the removal of the defective tire.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The tire defect automatic detection system and method provided by the present invention are designed for data collection automation based on the traditional tire defect detection system, mainly improving the tire support link and tire removal link, introducing a control module, and the system can automatically identify the specifications of the tire to be detected according to the barcode data and generate a first control instruction, so that the tire support module can automatically adjust the tire clamping stroke and the tire support stroke according to the first control instruction, and at the same time, it can determine whether the tire to be detected is a defective tire according to the internal image data of the detected tire. If so, a second control instruction is generated and the tire removal module is controlled to remove the defective tire, so as to realize the automatic removal of the defective tire, thereby realizing the automation of the entire process of the whole system and the automatic storage of the tire detection result data, which can improve the detection efficiency of tire defects and the intelligence level of the production line, and reduce labor costs;

[0018] 2. The present invention improves the tire shifting link by adding a relay to the tire shifting circuit. After the second controller receives the tire shifting instruction, the relay simulates the action of pressing and releasing the button to realize the automatic tire shifting function.

[0019] 3. The present invention realizes automatic data collection of the tire defect detection system through the design of the tire shifting circuit and the programming of the host computer and PLC, providing an effective data source for subsequent association rule analysis;

[0020] 4. The second controller in the present invention adopts S7-1200PLC, which has strong processing capability, supports multiple communication protocols and modular expansion, and fully meets system requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a tire defect automatic detection system provided in an embodiment of the present invention;

[0022] Figure 2 It is a flow chart of the S7-1200 PLC program in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0024] Example

[0025] like Figure 1 As shown, this embodiment provides an automatic tire defect detection system, which can realize automatic collection of tire barcode information, tire weighing management, automatic identification of tire specifications, automatic tire support to enter the X-ray machine room for defect detection, and automatic removal of defective tires, thereby improving detection efficiency and the intelligence level of the production line.

[0026] According to the requirements of the overall system functions and technical indicators, the main components of the system include a data acquisition module, a control module, a tire support module, an image acquisition module and a tire shifting module. In this embodiment:

[0027] The data acquisition module is implemented using a barcode scanning and weighing station, which includes a first conveyor roller, a barcode scanner, and a weighing platform. When the tire to be tested is conveyed to the bottom of the barcode scanner, the photoelectric sensor switch is triggered, and the barcode scanner starts to scan the barcode information on the tire to be tested and upload it to the host computer of the control module. At the same time, the weighing platform collects the weight data of the tire to be tested and uploads it, realizing the automatic collection of barcode information and automatic weighing functions.

[0028] The tire stretching module is realized by the tire stretching station, which consists of the second conveyor roller, tire clamp and tire stretcher. The tire clamp is responsible for the transfer of the tire to be tested into and out of the X-ray room, and the tire stretcher stretches the tire to be tested to ensure that the tire to be tested maintains a certain tension and shape, so that the X-ray machine can scan and detect clearly.

[0029] The image acquisition module is implemented in the X-ray room. After the tire to be tested enters the X-ray room, it rotates through the rotating mechanism. The X-ray machine emits rays to penetrate the tire to be tested, generates an image of the internal structure of the tire to be tested and uploads it to the host computer. The automatic defect detection software detects defects such as bubbles, inclusions and cracks inside the tire to be tested based on the image.

[0030] The tire shifting module is realized by the tire shifting station, which consists of a baffle and a third conveyor roller. After the tire to be inspected is inspected in the X-ray room, the tire supporter puts the tire to be inspected back on the third conveyor roller. According to the judgment result of the defect detection software, the controller automatically controls the lever switch to shift the defective tire out of the production line, realizing the diversion of normal tires and defective tires.

[0031] On this basis, the tire defect automatic monitoring system provided in this embodiment introduces a control module including a host computer and a PLC control unit, the purpose of which is to realize the automation of the entire process of the tire quality detection system, wherein the PLC control unit further includes a first controller (S7-300PLC is selected in this embodiment) and a second controller (S7-1200PLC is selected in this embodiment), and the second controller is a communication node between the host computer and the first controller. In the control module, the host computer controls the action of the tire support module and the tire shifting module respectively by sending control instructions of different stages to the PLC control unit, thereby realizing the improvement of the tire support link and the tire shifting link, specifically:

[0032] 1. Tire support

[0033] The tire clamp and tire spreader are executive elements, and their specific actions are controlled by the instructions of the host computer (i.e., the first control instruction). The host computer can automatically identify the specifications of the tire to be tested and read the size information such as the inner and outer diameters of the tire. The controller sends instructions to the automatic adjustment of the tire clamp and tire spreader executive elements based on the tire information read. The tire clamp and tire spreader automatically select the tire clamping position and tire spreader size suitable for the tire based on the instructions received, thereby realizing the automatic adjustment of the size of the tire clamp and tire spreader by the controller.

[0034] 2. Tire shifting

[0035] The tire defect detection software is used to detect the internal image of the tire and generate judgment information. The generated judgment information (i.e., the second control instruction) is transmitted from the upper computer to the lower controller. At the same time, the circuit of the tire switch is modified, and the output interface of the controller is connected to the circuit, so that the controller can automatically control the tire switch according to the judgment information, and realize the conversion of the digital information of the judgment result into the electrical signal output by the controller. The tire switch can respond to the judgment result generated by the detection software, thereby realizing the automatic removal of the defective tire.

[0036] The specific process of hardware design of the tire defect automatic detection system in this embodiment is as follows:

[0037] 1. PLC module selection

[0038] According to the overall system design, the host computer and the PLC control unit need to be able to communicate to achieve the transmission of tire size data and tire test result information. The factory currently uses the Siemens S7-300PLC controller model. Compared with the S7-300PLC, the S7-1200PLC provides more flexible and extensive modular expansion options, supports a wider range of newer communication protocols, and can meet the communication requirements with the host computer. Table 1 is a performance comparison table of the S7-300PLC and S7-1200PLC.

[0039] Table 1 S7-300PLC and S7-1200PLC parameter comparison

[0040] index S7-300PLC S7-1200PLC Processing speed Slow Faster Communication capabilities Support mainstream communication protocols Supports a wide range of newer communication protocols Memory capacity 192KB to 512KB 150KB to 4MB Data processing Limited processing of large data Powerful data processing and storage capabilities Software compatibility Older versions of SIMATIC STEP 7 New version of TIA Portal Energy consumption Standard energy consumption Energy saving User-Friendliness Traditional operation interface The interface is easier to program and maintain Scalability Highly modular Flexible and extensive modular expansion options

[0041] After comparison and selection, it was found that Siemens S7-1200PLC (model 1211C AC / DC / Rly) has strong processing capabilities, supports multiple communication protocols and modular expansion, and meets system requirements. Therefore, this embodiment selects S7-1200PLC as a communication node to achieve communication between the host computer and the controller.

[0042] 2. Communication settings

[0043] As an information communication node, after the S7-1200PLC communicates with the host computer and obtains the tire size information, it is also necessary to forward the tire size information to the S7-300PLC, so that the controller can recognize the tire type of the tire to be inspected, thereby adjusting the size of the tire clamp and the tire supporter, and transferring the tire to the X-ray machine room for automatic defect detection. Therefore, in addition to communicating with the host computer, the S7-1200PLC also needs to communicate with the S7-300PLC. The RS-485 communication protocol is a half-duplex serial communication protocol that is widely used in industrial environments. According to the overall design, at any time, there is only one information sender and one information receiver between the S7-1200PLC and the S7-300PLC, and the data flows alternately, which meets the characteristics of half-duplex communication. Therefore, this embodiment uses the RS-485 communication protocol for communication between PLCs.

[0044] Since the S7-1200PLC module does not have a serial communication port that supports the RS-485 protocol, an additional CM1241 module needs to be installed. The CM1241 module is a communication module for the S7-1200PLC series. By configuring with the S7-1200PLC, it can provide an external serial communication port for the S7-1200PLC. Using the CM1241 communication module, RS-485 communication between the S7-1200PLC and the host computer and S7-300PLC can be realized to ensure the stability and accuracy of data transmission.

[0045] 3. Tire shifting circuit modification

[0046] In order to realize the automatic tire shifting function, the original tire shifting circuit needs to be modified. When a defective tire is detected, the effect of automatically pressing the button can be achieved. A relay is added to the circuit, and one end of the relay coil is connected to the output port of the S7-1200PLC, and the other end is connected to zero potential; a group of normally open contacts are connected in parallel with the control button. When a defective tire is detected, the host computer sends an open lever instruction to the S7-1200PLC. After receiving the instruction, the PLC sets the output port to a high level, energizes the relay coil, attracts the armature, drives the normally open contact to move, and closes the lever circuit. At the same time, a timer is added to the PLC internal program, and the time is set to 0.5s. After 0.5s, the PLC sets the output port to a low level, the coil is de-energized, the armature is released, the contacts are disconnected, and the entire circuit returns to an open circuit state, thereby simulating a complete set of button pressing and releasing actions. In this way, the S7-1200PLC controls the tire shifting action and realizes the automatic tire shifting function, without affecting the use of the original production line buttons.

[0047] The specific contents of the software design of the tire defect automatic detection system are as follows:

[0048] 1. Host computer program design

[0049] The tire specification standard database is managed through SQL statements, and the python-snap7 library is used to realize the communication between the host computer and the S7-1200PLC to receive and send tire specification data and test results. Specifically:

[0050] Before the system starts working, the host computer accesses the database through SQL statements, performs operations such as adding, deleting, querying, and modifying the database, stores the tire model and size data in the database in advance, and builds a tire specification standard database. The tire specification standard database is shown in Table 2. When the barcode information is transmitted to the host computer, the host computer can determine the tire model and size information based on the barcode information in the first place.

[0051] Table 2 Tire specification standard database

[0052] id Specification Pattern Coding Outer diameter Tire width Diameter 1 7.50R16LT BS28 TP7.50R16-T01 800.0 210.0 403.2 2 7.50R16LT BY35 TP7.50R16-T03 805.0 210.0 403.2 3 8.25R16LT AL915 TP8.25R16-915 863.0 230.0 405.0 4 8.25R16LT BS28 TP8.25R16-T01 853.0 230.0 403.2 5 8.25R16LT BY35 TP8.25R16-35 859.0 230.0 403.2 6 8.25R16LT BY802 TP8.25R16-S802 861.0 236.0 402.5 7 8.25R20 BS28 TP8.25R20-28 962.0 230.0 508.0 8 8.25R20 BY35 TP8.25R20-35 965.0 230.0 508.0 9 8.25R20 BT-330 TP8.25R20-FT01 962.0 233.0 508.0 10 9.00R20 BS28 TP9.00R20-FT01 1018.0 260.0 508.0 11 9.00R20 BY506 TP9.00R20-FT01 1018.0 260.0 508.0 12 9.00R20 VTO01 TP9.00R20-FT01 1018.0 260.0 508.0 13 9.00R20 VR501 TP9.00R20-FT01 1018.0 260.0 508.0 14 9.00R20 BY35 TP9.00R20-FT03 1022.0 260.0 508.0 15 9.00R20 BT-142 TP9.00R20-FT03 1022.0 260.0 508.0 16 9.00R20 AL915 TP9.0OR20A-F915 1026.0 260.0 508.0 17 10.00R20 BYO6 TP10.00R20-F06 1052.0 282.0 508.0 18 10.00R20 SP909 TP10.00R20-F06 1052.0 282.0 508.0 19 10.00R20 BY35 TP10.00R20-F35 1053.0 276.0 508.0 20 10.00R20 BS28 TP10.00R20-F28 1049.0 280.0 508.0 21 10.00R20 BS18 TP10.00R20-F28 1049.0 280.0 508.0 22 10.00R20 BYT698C TP10.00R20-F28 1049.0 280.0 508.0 23 10.00R20 VTO01 TP10.00R20-F28 1049.0 280.0 508.0 24 10.00R20 VR501 TP10.00R20-F28 1049.0 280.0 508.0 25 10.00R20 SK928 TP10.00R20-S928 1049.0 276.0 508.0 26 10.00R20 SK938 TP10.00R20-S928 1049.0 276.0 508.0 27 10.00R20 AL505 TP10.00R20-F505 1050.0 276.0 508.0 28 10.00R20 AL915 TP10.00R20-F915 1057.0 276.0 508.0 29 10.00R20 BY919 TP10.00R20-S919 1052.0 276.0 508.0

[0053] After the host computer determines the tire data to be tested, the inner and outer diameter information of the corresponding tire specifications needs to be sent to the PLC control unit. To this end, the python-snap7 library is used to realize the communication between the host computer and the S7-1200PLC. The specific steps are as follows:

[0054] Step 11. Import the python-snap7 library and create a Client object;

[0055] Step 12: Use the connect method to connect to the PLC. The parameters include the IP address, rack number, and slot number of the PLC.

[0056] Step 13, use the read_area method to read the data of the M-bit storage area, the parameters include the storage area type, DB number, starting address and read length;

[0057] Step 14, use the write_area method to write the tire inner and outer diameter data into the M-bit storage area, and the parameters include the storage area type, DB number, start address, write length and write value;

[0058] Step 15: Use the disconnect method to disconnect from the PLC.

[0059] After the tire defect automatic detection software detects the tire, the host computer monitoring interface displays the tire information in real time, and an indicator light shows whether the tire is qualified. The green light indicates a qualified tire, and the red light indicates a defective tire. When a problem tire is detected, the host computer also sends a tire shifting indication signal (also known as the second control instruction) to the S7-1200PLC through the snap7 method. When the PLC detects the signal, it will execute the tire shifting action.

[0060] 2. S7-1200PLC Programming

[0061] The PCL control unit includes receiving and sending tire specification data, monitoring and judging instructions, controlling tire shifting actions, etc., to achieve full process automation. Specifically:

[0062] After the S7-1200PLC receives the tire inner and outer diameter data information and stores it in the data block, it monitors the data information from the S7-300PLC at the same time. When the detection process reaches the tire support process, the S7-300PLC sends an inquiry instruction 72H to the S7-1200PLC, requesting the tire inner and outer diameter data information to adjust the size of the tire clamp and tire support. The specific implementation steps are as follows:

[0063] Step 21, call the Receive_P2P instruction block, set the communication port to the CM1241 module, specify the data block where the data is stored, and implement the monitoring function of the S7-1200PLC;

[0064] Step 22, after receiving the information, the comparison command block is called to determine whether the received data in the received data block is 72H. If it is 72H, it means that the S7-300PLC has sent an inquiry command, then the S7-1200PLC immediately sets the send flag to 1, triggers the data sending program, and sends the tire size information in the data block to the S7-300PLC;

[0065] Step 23: After the transmission is completed, the received data block is refreshed, the flag is set to 0, and the process is repeated after the next inquiry command is received.

[0066] Tables 3 and 4 show the results of the tire specifications in the actual production process. Taking the tire No. 7 of the tire factory as an example, Table 3 shows the standard data of the tire No. 7 stored in the S7-300PLC database, and Table 4 shows the tire specification data received by the S7-300PLC from the host computer and the result of accurately identifying the tire No. 7 based on the data.

[0067] Table 3 Standard data of tire No. 7 stored in the S7-300PLC database

[0068]

[0069] Table 4 Data received by S7-300 PLC from the host computer and the result of identifying tire No. 7

[0070] Data received by S7-300PLC Results after identifying the data 0_Tire_ID:=#OUT14 7 0_Inner_Diameter:=#OUT15 600 0_Outer_Diameter:=#OUT16 1075 0_Tire_Width:=#OUT17 315

[0071] When the defect detection software detects a defective tire, the host computer immediately sends the detection result to the S7-1200PLC through snap7 communication. The agreed flag information 0Xff indicates that a defective tire is detected. After receiving the flag information, the S7-1200PLC sets the output port connected to the relay circuit to a high level and energizes the relay coil, so that the relay attracts the armature and connects the entire tire push button circuit. After that, a timer is set in the PLC program, and the flag is reset after 0.5s, the low level is restored, the circuit is disconnected, and the effect of pressing and releasing the lever button is simulated to achieve a tire push action. In summary, the complete process of the S7-1200PLC program includes receiving size information, sending size information, judging the received instruction, and performing tire push. Figure 2 This is the S7-1200PLC program flow chart.

[0072] Combined with the above system design, when performing data collection and defect detection, the operation steps of the entire tire defect automatic detection system are as follows:

[0073] Step 31, scan the barcode for weighing. The tire is transferred to the weighing platform, triggering the photoelectric switch. The barcode scanner scans the tire barcode, and the weighing platform completes the tire weight information collection. The weighing platform and the barcode scanner send the tire weight and barcode information to the host computer respectively. The host computer compares the received barcode information with the standard database, confirms the tire specifications and other information, and gives the test results through the automatic weighing software.

[0074] Step 32, tire specification identification, the host computer determines the tire model to be tested based on the barcode information, queries the standard database to obtain the inner and outer diameter data of the tire model, and sends it to the controller. The controller automatically adjusts the size of the tire clamp and tire supporter based on the data, and grabs the tire into the X-ray machine inspection room.

[0075] Step 33, defect detection, after the tire enters the X-ray machine inspection room, the X-ray machine performs a penetration scan on the tire, generates an image and uploads it to the host computer. The defect detection software automatically detects defects inside the tire based on the image and displays the detection results.

[0076] Step 34, defect processing, after the detection software determines that the defective tire is present, the host computer sends a signal to the controller, and after receiving the signal, the controller triggers the lever control program to automatically remove the defective tire from the production line.

[0077] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A tire defect automatic detection system, characterized in that: It includes a data acquisition module, a control module, a tire support module, an image acquisition module and a tire shifting module, wherein: The data acquisition module acquires the barcode data of the tire to be detected and sends it to the control module; The control module receives the barcode data, identifies the specification of the tire to be inspected, generates a first control instruction, and controls the tire support module to adjust the tire clamping stroke and the tire support stroke based on the first control instruction; Based on the adjusted tire clamping stroke and tire supporting stroke, the image acquisition module acquires internal image data of the tire to be inspected; Based on the internal image data, when the control module determines that the tire to be detected is a defective tire, a second control instruction is generated, and based on the second control instruction, the tire removal module is controlled to remove the defective tire.

2. The tire defect automatic detection system according to claim 1, characterized in that: The control module includes a host computer and a PLC control unit. The host computer is used to generate the first control instruction and the second control instruction and store the received data. The PLC control unit is used to control the tire support module and the tire shifting module to respectively perform corresponding actions and store the received data.

3. The tire defect automatic detection system according to claim 2, characterized in that: The PLC control unit is provided with a timer.

4. The tire defect automatic detection system according to claim 2, characterized in that: The PLC control unit includes a first controller and a second controller, and the second controller is used to realize communication between the host computer and the first controller.

5. The tire defect automatic detection system according to claim 4, characterized in that: The tire shifting module includes a tire shifting circuit, which includes a relay. One end of the coil of the relay is connected to the output end of the second controller, and the other end is connected to zero potential. A group of normally open contacts of the relay is connected in parallel with the control button.

6. The tire defect automatic detection system according to claim 4, characterized in that: The second controller is S7-1200PLC.

7. The tire defect automatic detection system according to claim 2, characterized in that: The control module receives the barcode data, identifies the specification of the tire to be detected, generates a first control instruction, and controls the tire support module to adjust the tire clamping stroke and the tire support stroke based on the first control instruction. The specific process includes: The host computer determines the model of the tire to be detected according to the barcode data, obtains the tire inner and outer diameter data corresponding to the model of the tire to be detected based on a pre-built tire specification standard database, and generates and sends the first control instruction; The PLC control unit receives the first control instruction, and controls the tire support module to adjust the tire clamping stroke and the tire support stroke.

8. The tire defect automatic detection system according to claim 1, characterized in that: The data acquisition module is also used to acquire weight data of the tire to be tested and send it to the control module, and the control module receives the weight data.

9. The tire defect automatic detection system according to claim 1, characterized in that: The tire support module includes a tire clamp and a tire support, and the image acquisition module includes an X-ray machine room.

10. A tire defect automatic detection method, characterized in that: The following steps are involved: Obtain barcode data of the tire to be tested; Based on the barcode data, the specification of the tire to be inspected is identified, a first control instruction is generated, and based on the first control instruction, a tire clamping stroke and a tire supporting stroke are controlled and adjusted; Based on the adjusted tire clamping stroke and tire supporting stroke, collecting internal image data of the tire to be inspected; Based on the internal image data, when the tire to be inspected is determined to be a defective tire, a second control instruction is generated, and based on the second control instruction, control is performed to remove the defective tire.

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