Tire mold steel sheet detection device and detection method

Abstract

The application belongs to the technical field of steel sheet detection, and discloses a tire mold steel sheet detection device and a detection method, wherein the tire mold steel sheet detection device comprises a base, a first base body slidingly connected to the base along a first direction, a second base body arranged on the base, and a first driving assembly for driving the first base body to move, a pressure sensor is arranged between the first base body and the first driving assembly and / or between the second base body and the base, one of the first base body and the second base body is provided with a mounting position for mounting a steel sheet, and the other one is provided with a blocking block capable of blocking the steel sheet, so that the influence of the height, thickness, width and shape of the steel sheet on the fatigue life of the steel sheet can be fully considered, the precision of the fatigue life detection of the steel sheet is improved, and the problem that the quality of the steel sheet cannot be identified due to slight deformation of the steel sheet can be avoided, so that the detection precision of the fatigue life of the steel sheet is further improved.

Description

Technical Field

[0001] This application belongs to the technical field of steel sheet inspection, specifically relating to a tire mold steel sheet inspection device and inspection method. Background Technology

[0002] Tire molds are key equipment for vulcanizing and molding various types of tires. They are mainly used to shape the tread pattern and structure. The steel sheets on the tire mold can form narrow and deep patterns during the tire molding process, which plays a key role in the tire's comfort, drainage, and cushioning. Together with the ribs, they form the tire's tread pattern. In order to improve tire performance, steel sheets are developing towards 3D steel sheets with multiple angles, multiple curvatures, and varying thicknesses, which also places higher demands on the lifespan of the steel sheets.

[0003] During the vulcanization process of tire molding, the tire is formed on the outside of the steel sheet. Consequently, during the tire removal process after vulcanization, friction exists between the steel sheet and the tire. This results in the steel sheet being subjected to a force parallel to the radial direction of the tire during removal. As the tire mold is used more frequently, the number of times the steel sheet is subjected to this force also increases, potentially leading to deformation or even breakage. To ensure tire molding quality, it is necessary to test the fatigue life of the steel sheet. This allows for timely replacement of the steel sheet based on its fatigue life, thus guaranteeing the quality of tire molding.

[0004] Currently, the fatigue life of steel sheets is estimated solely by testing their hardness and tensile properties. However, since the hardness and tensile properties of steel sheets are independent of their height, thickness, width, and shape, which in turn affect their fatigue life, the accuracy of estimating fatigue life based on these parameters is poor. Therefore, improving the accuracy of fatigue life testing for steel sheets has become an urgent technical problem to be solved. Summary of the Invention

[0005] This application provides a tire mold steel sheet testing device to improve the accuracy of fatigue life testing of steel sheets.

[0006] The technical solution adopted in this application is as follows:

[0007] A tire mold steel sheet detection device includes a base, a first base slidably connected to the base along a first direction, a second base disposed on the base, and a first driving component for driving the first base to move. A pressure sensor is disposed between the first base and the first driving component and / or between the second base and the base. One of the first base and the second base is provided with a mounting position for mounting the steel sheet, and the other base is provided with a blocking block capable of blocking the steel sheet.

[0008] By adopting the above technical solution, when using the tire mold steel sheet detection device of this application to detect steel sheets, the steel sheet is first installed in the installation position, and then the first drive assembly is started to drive the first base. The first base moves along the first direction toward the direction close to the second base, causing the steel sheet to abut against the blocking block. At the same time, the position of the first base at this time is recorded as the middle position, and the pressure value of the pressure sensor before the first base moves to the point where the steel sheet abuts against the blocking block is recorded as the minimum pressure value F1. Then the first drive assembly continues to drive the first base so that the first base continues to move along the first direction. At this time, the blocking block will block the steel sheet, thereby increasing the pressure between the blocking block and the steel sheet, and increasing the pressure value of the pressure sensor. When the first base moves to the set position, the first drive assembly stops working, so that the first base stops. The movement is stopped, and the maximum pressure value of the pressure sensor during the movement of the first substrate from the middle position to the set position is recorded as the maximum pressure value F2. If the difference between the maximum pressure value F2 and the minimum pressure value F1 is less than the set value or the steel sheet breaks, the steel sheet is deemed unqualified. If the difference between the maximum pressure value F2 and the minimum pressure value F1 is greater than the set value, the first drive component is activated to drive the first substrate to the initial position, and then the above steps are repeated for the next test until N tests are completed. If, during the test, the difference between the maximum pressure value F2 and the minimum pressure value F1 is less than the set value or the steel sheet breaks in any test, the steel sheet is deemed unqualified and no further test is required. However, if, in each of the N tests, the difference between the maximum pressure value F2 and the minimum pressure value F1 is greater than the set value, the steel sheet is deemed qualified.

[0009] Because this application detects the fatigue life of steel sheets by blocking them with a blocking block, compared to the prior art which infers fatigue life by detecting the hardness and tensile properties of steel sheets, the tire mold steel sheet detection device in this application can fully consider the influence of the height, thickness, width, and shape of the steel sheet on its fatigue life, thus greatly improving the accuracy of fatigue life detection. Furthermore, because this application detects fatigue life of steel sheets by measuring the pressure change of the pressure sensor during the movement of the first substrate from the center position towards the set position, it can also avoid the problem of unidentifiable steel sheet quality due to slight deformation, further improving the accuracy of fatigue life detection.

[0010] Optionally, the base has a guide post, and the tire mold steel sheet detection device further includes a sliding seat slidably connected to the guide post along the axial direction of the guide post and a second driving assembly for driving the sliding seat to move. The central axis of the guide post is set at an angle with the first direction, and the second base is disposed on the sliding seat.

[0011] By adopting the above technical solution, when inspecting different steel sheets, the position of the second substrate is first adjusted according to the size of the steel sheet; when adjusting the second substrate, the second drive assembly is first activated so that the second drive assembly drives the sliding seat, the sliding seat slides relative to the guide post, the sliding seat drives the second substrate to move along the axial direction of the guide shaft, thereby changing the distance between the second substrate and the base, and finally moving the second substrate to a position that can block the steel sheet.

[0012] Since the tire mold steel sheet detection device of this application also includes a sliding seat slidably connected to the guide post along the axial direction of the guide post and a second driving component for driving the sliding seat to move, and the central axis of the guide shaft is set at an angle with the first direction, and the second base is disposed on the sliding seat, the position of the second base can be adjusted. On the one hand, this allows the tire mold steel sheet detection device of this application to detect different steel sheets, thereby increasing the flexibility of the tire mold steel sheet detection device. On the other hand, when the first base in the set position moves toward the initial position, the second driving component can drive the sliding seat toward the direction away from the base to separate the steel sheet from the blocking block, so as to facilitate the use of the first driving component to drive the first base to the initial position. At the same time, it can also avoid the influence of the steel sheet fatigue life detection result caused by the friction between the steel sheet and the second base during the movement of the first base from the set position to the initial position, thereby further improving the accuracy of the steel sheet fatigue life detection.

[0013] Optionally, the guide post is provided with a support frame, which is located on the side of the sliding seat away from the base, and the second drive assembly is disposed on the support frame.

[0014] By adopting the above technical solution, since the guide column is equipped with a support frame, which is located on the side of the sliding seat away from the base, and the second drive component is located on the support frame, the second drive component can be installed on the guide column using the support frame, thus facilitating the installation of the second drive component. On the other hand, the second drive component can avoid interference with the first base, thereby preventing the second drive component from interfering with the first base and affecting the sliding range of the first base. This ensures the stable operation of the tire mold steel sheet testing device for testing the fatigue life of the steel sheet.

[0015] Optionally, the blocking block has a blocking surface parallel to the steel sheet, and the blocking surface is provided with a rubber pad.

[0016] By adopting the above technical solution, since the blocking block has a blocking surface parallel to the steel sheet and the blocking surface is equipped with a rubber pad, on the one hand, the actual working conditions of the steel sheet can be simulated more realistically by utilizing the blocking surface and the rubber pad, thereby further improving the accuracy of fatigue life detection of the steel sheet. On the other hand, it can increase the contact area between the steel sheet and the blocking block, thereby reducing the possibility of premature steel sheet breakage due to the large pressure between the blocking block and the steel sheet caused by the small contact area between the steel sheet and the blocking block. This further improves the accuracy of fatigue life detection of the steel sheet.

[0017] Optionally, the second base is provided with a bracket, the blocking block is hinged to the bracket, and the bracket is provided with a locking member for locking the blocking block.

[0018] By adopting the above technical solution, when inspecting different steel sheets, the blocking block is first adjusted according to the tilt angle of the part of the steel sheet exposed outside the installation position so that the blocking surface is parallel to the tilt angle of the part of the steel sheet exposed outside the installation position. When adjusting the blocking block, the locking device is first released from the locking block, and then the blocking block is rotated so that the blocking surface on the blocking block rotates with the blocking block, and finally the blocking surface on the blocking block moves to the required position. Then the locking device is used to lock the blocking block.

[0019] Because the second base is equipped with a support, the blocking block is hinged to the support, and the support is equipped with a locking device for locking the blocking block, thus, on the one hand, the blocking surface can be adjusted according to different steel sheets to increase the flexibility of the tire mold steel sheet detection device and increase the accuracy of steel sheet fatigue life detection; on the other hand, the locking device can be used to lock the second base to increase the stability of the second base.

[0020] Optionally, the bracket is provided with an arc-shaped groove, and the locking element includes a pair of locking bolts passing through the blocking block and the arc-shaped groove.

[0021] By adopting the above technical solution, when adjusting the blocking surface, the locking bolt pair is first tightened to separate the bolt head and nut of the locking bolt pair from the bracket. Then, the blocking block is rotated so that the blocking block drives the blocking surface to rotate. At the same time, the locking bolt pair rotates relative to the arc groove under the action of the blocking block. When the blocking surface rotates to the required position, the rotation of the blocking block is stopped, and the locking bolt pair is tightened so that the bolt head and nut of the locking bolt pair are pressed against the bracket to achieve the adjustment of the blocking surface. During the detection of the steel sheet, due to the obstruction of the blocking surface, the part of the steel sheet in contact with the blocking surface will deform as it moves from the middle position to the set position. At this time, the steel sheet applies force to the blocking block through the rubber pad and the blocking surface, so that the blocking block overcomes the clamping force between the locking bolt pair and the bracket and rotates with the deformation of the steel sheet. This further more realistically shows the stress condition of the steel sheet when the molded tire is demolded, thereby further increasing the accuracy of the fatigue life detection of the steel sheet.

[0022] Optionally, a pressure sensor is provided between the second base and the base, and the pressure sensor is located between the second drive assembly and the sliding seat.

[0023] By adopting the above technical solution, since the pressure sensor is located between the second drive assembly and the sliding seat, when the second substrate is subjected to pressure applied by the steel sheet, the second substrate can transmit the pressure to the pressure sensor through the sliding seat, thereby ensuring the accuracy of the pressure sensor in detecting pressure.

[0024] Optionally, the base has a slide rail arranged parallel to the first direction, and the first base is provided with a slider that slides in cooperation with the slide rail.

[0025] By adopting the above technical solution, since the base has a slide rail arranged parallel to the first direction and the first base is provided with a slider that slides with the slide rail, on the one hand, the sliding connection between the first base and the base can be realized by utilizing the cooperation between the slider and the slide rail, so as to increase the connection stability between the first base and the base; on the other hand, the guidance of the first base can be realized by utilizing the cooperation between the slider and the slide rail, so as to increase the motion stability of the first base.

[0026] Optionally, the mounting position is provided with a heating element for heating the steel sheet.

[0027] By adopting the above technical solution, since the installation position is equipped with a heating element, which is used to heat the steel sheet, the heating element can be used to heat the steel sheet to more realistically simulate the actual working conditions of the steel sheet, thereby further improving the accuracy of fatigue life detection of the steel sheet.

[0028] Optionally, a pressure sensor is provided between the first substrate and the first drive assembly, and a heat insulation plate is provided between the pressure sensor and the first substrate and / or between the mounting position and the first substrate.

[0029] By adopting the above technical solution, since a heat insulation plate is provided between the pressure sensor and the first substrate and / or between the mounting position and the first substrate, thermal isolation between the mounting position and the first substrate and between the pressure sensor and the first substrate can be achieved. On the one hand, the heat loss of the heating element can be reduced to improve the heating efficiency of the steel sheet, thereby improving the fatigue life detection efficiency of the steel sheet. On the other hand, the influence of high temperature on the pressure sensor can be reduced to ensure the accuracy of pressure detection by the pressure sensor and to ensure the service life of the pressure sensor.

[0030] This application also provides a testing method to improve the accuracy of fatigue life testing of steel sheets.

[0031] A detection method for a tire mold steel sheet detection device as described above includes the following steps:

[0032] S1. Install the steel plate; place the steel plate in the mounting position.

[0033] S2. The first driving component drives the first base to move along the first direction and collects the pressure value of each sampling cycle through the pressure sensor.

[0034] S3. When the first substrate moves to the set position, the first drive component stops working and determines whether the steel sheet meets the qualification requirements based on the minimum pressure value F1 and the maximum pressure value F2 of the pressure sensor during the movement of the first substrate.

[0035] By adopting the above technical solution and the above detection method, on the one hand, the fatigue life of steel sheets can be detected; on the other hand, when detecting the fatigue life of steel sheets, the influence of the height, width, thickness and shape of the steel sheets on the fatigue life can be fully considered, thereby improving the accuracy of the fatigue life detection of steel sheets.

[0036] Optionally, step S3 above includes:

[0037] When the steel sheet contacts the blocking block, the position of the first base at this time is recorded as the middle position, and the pressure value of the pressure sensor during the movement of the first drive assembly toward the middle position is recorded as the minimum pressure value F1. The first drive assembly continues to drive the first base to move along the first direction. After the first base has moved a set distance, the position of the first base at this time is recorded as the set position, and the maximum pressure value of the pressure sensor during the movement of the first drive assembly from the middle position toward the set position is recorded as the maximum pressure value F2.

[0038] If the difference between F2 and F1 is less than the preset value or the steel sheet breaks during the movement of the first substrate from the middle position toward the set position, the steel sheet is deemed unqualified; if the difference between F2 and F1 is greater than the preset value, the steel sheet is deemed qualified.

[0039] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0040] 1. The tire mold steel sheet detection device of this application includes a base, a first base slidably connected to the base along a first direction, a second base disposed on the base, and a first driving component for driving the first base to move. A pressure sensor is disposed between the first base and the first driving component and / or between the second base and the base. One of the first base and the second base is provided with a mounting position for mounting the steel sheet, and the other base is provided with a blocking block that can block the steel sheet. Compared with the prior art method of inferring the fatigue life of the steel sheet by detecting the hardness and tensile properties of the steel sheet, the tire mold steel sheet detection device of this application can fully consider the influence of the height, thickness, width and shape of the steel sheet on the fatigue life of the steel sheet, thereby greatly improving the accuracy of the fatigue life detection of the steel sheet. At the same time, since the fatigue life detection of the steel sheet is achieved by the pressure value change of the pressure sensor during the movement of the first base from the middle position to the set position, it can also avoid the problem of the steel sheet quality not being identified due to slight deformation of the steel sheet, thereby further improving the accuracy of the fatigue life detection of the steel sheet.

[0041] 2. The base in this application has a guide post, and the tire mold steel sheet detection device further includes a sliding seat slidably connected to the guide post along the axial direction of the guide post and a second driving component for driving the sliding seat to move. The central axis of the guide post is set at an angle with the first direction. The second base is disposed on the sliding seat, thereby enabling the position of the second base to be adjusted. This allows the tire mold steel sheet detection device in this application to detect different steel sheets, increasing the flexibility of the tire mold steel sheet detection device. On the other hand, when the first base in the set position moves toward the initial position, the second driving component can drive the sliding seat toward the direction away from the base to separate the steel sheet from the blocking block, so as to facilitate the use of the first driving component to drive the first base to the initial position. At the same time, it can also avoid the influence of the steel sheet fatigue life detection result caused by the friction between the steel sheet and the second base during the movement of the first base from the set position to the initial position, thereby further improving the accuracy of the steel sheet fatigue life detection.

[0042] 3. The guide column in this application is provided with a support frame, which is located on the side of the sliding seat away from the base. The second drive component is located on the support frame. On the one hand, the support frame can be used to install the second drive component on the guide column, so as to facilitate the installation of the second drive component. On the other hand, it can make the second drive component avoid interference with the first base, so as to avoid the situation where the second drive component may interfere with the first base and affect the sliding range of the first base, thereby ensuring the stability of the tire mold steel sheet detection device in detecting the fatigue life of the steel sheet. Attached Figure Description

[0043] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0044] Figure 1 This is a schematic diagram of the tire mold steel sheet detection device according to one embodiment of this application;

[0045] Figure 2 This is a schematic diagram of the tire mold steel sheet detection device according to one embodiment of this application from another perspective. The structure of the guide column is omitted in the figure.

[0046] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0047] Figure label:

[0048] 1. Base; 11. Guide column; 111. Support frame; 12. Slide rail; 2. First base; 21. Mounting position; 211. Heating element; 212. Heat insulation plate; 22. Slider; 3. Second base; 31. Blocking block; 311. Rubber pad; 32. Bracket; 321. Arc groove; 322. Locking element; 4. First drive assembly; 41. Connector; 5. Pressure sensor; 6. Sliding seat; 61. Guide sleeve; 7. Second drive assembly; 8. Steel sheet. Detailed Implementation

[0049] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0050] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0051] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0054] Reference Figures 1 to 3 A tire mold steel sheet detection device is disclosed, which includes a base 1, a first base 2 slidably connected to the base 1 along a first direction, a second base 3 disposed on the base 1, and a first driving component 4 for driving the first base 2 to move. A pressure sensor 5 is disposed between the first base 2 and the first driving component 4 and / or between the second base 3 and the base 1. One of the first base 2 and the second base 3 is provided with a mounting position 21 for mounting steel sheet 8, and the other is provided with a blocking block 31 capable of blocking the steel sheet 8.

[0055] It is understood that the second base 3 is located at one end of the first base 2 along the first direction, so that when the first base 2 moves along the first direction under the action of the first drive assembly 4, the blocking block 31 can block the steel sheet 8 installed at the mounting position 21; the pressure sensor 5 can be provided only once, and the pressure sensor 5 is provided between the first base 2 and the first drive assembly 4 so that the pressure borne by the first drive assembly 4 can be directly obtained through the pressure value of the pressure sensor 5, or the pressure sensor 5 is provided between the second base 3 and the base 1 so that the pressure borne by the second base 3 can be directly obtained through the pressure value of the pressure sensor 5; or, there can be two pressure sensors 5, one of which is provided between the first base 2 and the first drive assembly 4, and the other is provided between the second base 3 and the base 1.

[0056] When using the tire mold steel sheet detection device of this application to detect the steel sheet 8, the steel sheet 8 is first installed in the mounting position 21, and then the first drive assembly 4 is started to drive the first base 2. The first base 2 moves along the first direction toward the direction close to the second base 3, causing the steel sheet 8 to abut against the blocking block 31. At the same time, the position of the first base 2 at this time is recorded as the middle position, and the pressure value of the pressure sensor 5 before the first base 2 moves to the point where the steel sheet 8 abuts against the blocking block 31 is recorded as the minimum pressure value F1. Then the first drive assembly 4 continues to drive the first base 2 so that the first base 2 continues to move along the first direction. At this time, the blocking block 31 will block the steel sheet 8, so that the pressure between the blocking block 31 and the steel sheet 8 increases, and the pressure value of the pressure sensor 5 increases. When the first base 2 moves to the set position, the first drive assembly 4 stops working, so that the first base 2 continues to move along the first direction. The first substrate 2 stops moving, and the maximum pressure value of the pressure sensor 5 during the process of the first substrate 2 moving from the middle position to the set position is recorded as the maximum pressure value F2. If the difference between the maximum pressure value F2 and the minimum pressure value F1 is less than the set value or the steel sheet 8 breaks, the steel sheet 8 is deemed unqualified. If the difference between the maximum pressure value F2 and the minimum pressure value F1 is greater than the set value, the first drive component 4 is activated to drive the first substrate 2 to the initial position, and then the above steps are followed for the next test until N tests are completed. If, during the test, the difference between the maximum pressure value F2 and the minimum pressure value F1 in any test process is less than the set value or the steel sheet 8 breaks, the steel sheet 8 is deemed unqualified and no further test is required. However, if, in each of the N tests, the difference between the maximum pressure value F2 and the minimum pressure value F1 is greater than the set value, the steel sheet 8 is deemed qualified.

[0057] It should be noted that, as the first substrate 2 moves from the initial position toward the middle position, the steel sheet 8 does not contact the blocking block 31, which in turn prevents the pressure on the pressure sensor 5 from changing, thus keeping the pressure value of the pressure sensor 5 constant, and this constant value is the minimum pressure value F1.

[0058] Because the fatigue life of the steel sheet 8 is detected by blocking the steel sheet 8 with the blocking block 31 in this application, compared with the prior art method of inferring the fatigue life of the steel sheet 8 by detecting the hardness and tensile properties of the steel sheet 8, the tire mold steel sheet detection device in this application can fully consider the influence of the height, thickness, width and shape of the steel sheet 8 on the fatigue life of the steel sheet 8, thereby greatly improving the accuracy of the fatigue life detection of the steel sheet 8. At the same time, because the fatigue life of the steel sheet 8 is detected by the change of pressure value of the pressure sensor 5 during the movement of the first base 2 from the middle position to the set position, it can also avoid the problem of the steel sheet 8's quality not being identified due to slight deformation, thereby further improving the accuracy of the fatigue life detection of the steel sheet 8.

[0059] This application does not specify the connection method between the second base 3 and the base 1. Preferably, refer to... Figure 1 and Figure 2 The base 1 has a guide post 11. The tire mold steel sheet detection device also includes a sliding seat 6 that is slidably connected to the guide post 11 along the axial direction of the guide post 11 and a second drive assembly 7 for driving the sliding seat 6 to move. The central axis of the guide post 11 is set at an angle with the first direction. The second base 3 is disposed on the sliding seat 6.

[0060] Understandably, the second base 3 is fixedly connected to the sliding seat 6.

[0061] When inspecting different steel sheets 8, the position of the second base 3 is first adjusted according to the size of the steel sheet 8. When adjusting the second base 3, the second drive assembly 7 is first activated so that the second drive assembly 7 drives the sliding seat 6. The sliding seat 6 slides relative to the guide post 11. The sliding seat 6 drives the second base 3 to move along the axial direction of the guide shaft, which in turn changes the distance between the second base 3 and the base 1, and finally moves the second base 3 to a position that can block the steel sheet 8.

[0062] Since the tire mold steel sheet detection device in this application also includes a sliding seat 6 slidably connected to the guide post 11 along the axial direction of the guide post 11 and a second driving component 7 for driving the sliding seat 6 to move, and the central axis of the guide shaft is set at an angle with the first direction, and the second base 3 is disposed on the sliding seat 6, the position of the second base 3 can be adjusted. On the one hand, this allows the tire mold steel sheet detection device in this application to detect different steel sheets 8, thereby increasing the flexibility of the tire mold steel sheet detection device. On the other hand, when the first base 2 in the set position moves toward the initial position, the second driving component 7 can drive the sliding seat 6 toward the direction away from the base 1 to separate the steel sheet 8 from the blocking block 31, so as to facilitate the use of the first driving component 4 to drive the first base 2 to the initial position. At the same time, it can also avoid the influence of the friction between the steel sheet 8 and the second base 3 on the fatigue life detection result of the steel sheet 8 during the movement of the first base 2 from the set position toward the initial position, thereby further improving the accuracy of the fatigue life detection of the steel sheet 8.

[0063] The better one is to refer to Figure 1 and Figure 2 Two guide posts 11 are arranged in parallel at intervals. The two guide posts 11 are located at both ends of the sliding seat 6. Guide sleeves 61 are provided at both ends of the sliding seat 6. The two guide sleeves 61 are respectively fitted on the outside of the two guide posts 11 to realize the sliding connection between the sliding seat 6 and the guide posts 11.

[0064] Preferably, the central axis of the guide column 11 is set perpendicular to the first direction. This facilitates the adjustment of the second base 3 and makes it easier to determine the set value between the maximum pressure value F2 and the minimum pressure value F1, thereby reducing the difficulty of fatigue life detection of the steel sheet 8 and improving the accuracy of fatigue life detection of the steel sheet 8.

[0065] This application does not specify a particular method for fixing the second base 3 to the sliding seat 6. Preferably, the second base 3 is integrally formed into the sliding seat 6. This increases the connection stability between the second base 3 and the sliding seat 6 and reduces the number of parts required for assembling the tire mold steel sheet inspection device, thereby improving the assembly efficiency of the tire mold steel sheet inspection device. In other embodiments, the second base 3 can also be fixedly connected to the sliding seat 6 by screws or bolts.

[0066] This application does not specifically limit the positional relationship between the guide post 11 and the base 1. Preferably, refer to... Figure 1 and Figure 2The guide post 11 is located at the top of the base 1, and the second base 3 is located at the bottom of the sliding seat 6. The first base 2 and the first drive assembly 4 are both located at the top of the base 1, so as to facilitate the staff to observe the dynamic movement of the steel sheet 8 during the inspection process. In other embodiments, the guide post 11 may also be located at the bottom of the base 1, the second base 3 is located at the top of the sliding seat 6, and the first base 2 and the first drive assembly 4 are both located at the bottom of the base 1; or, the base 1 extends vertically, and the guide post 11, the first base 2 and the first drive assembly 4 are all located on the same side of the base 1, and the second base 3 is located on the side of the sliding seat 6 closer to the base 1.

[0067] This application does not specifically limit the installation method of the second drive component 7 or the positional relationship between the second drive component 7 and the sliding seat 6. Preferably, refer to Figure 1 and Figure 2 The guide column 11 is provided with a support frame 111, which is located on the side of the sliding seat 6 away from the base 1, and the second drive assembly 7 is located on the support frame 111.

[0068] Understandably, the support frame 111 is fixedly connected to the end of the guide column 11 away from the base 1, and the second drive assembly 7 is installed on the guide column 11 through the support frame 111. The second drive assembly 7 is located on the side of the sliding seat 6 away from the base 1.

[0069] Since the guide column 11 is provided with a support frame 111, which is located on the side of the sliding seat 6 away from the base 1, and the second drive assembly 7 is provided on the support frame 111, the second drive assembly 7 can be installed on the guide column 11 by using the support frame 111, so as to facilitate the installation of the second drive assembly 7. On the other hand, the second drive assembly 7 can avoid interference with the first base 2, so as to avoid the situation where the second drive assembly 7 may interfere with the first base 2 and affect the sliding range of the first base 2, so as to ensure the stability of the fatigue life detection of the steel sheet 8 by the tire mold steel sheet detection device.

[0070] This application does not specifically limit the structure of the support frame 111. Preferably, the support frame 111 includes a support plate and support tubes located on both sides of the support plate. The support tubes are fixedly connected to the support plate to ensure the structural strength of the support frame 111. In other embodiments, the support frame 111 may also be composed of multiple tubular structures or a single plate structure.

[0071] In other embodiments, the second drive assembly 7 may also be mounted on the base 1, and the second drive assembly 7 is located on the side of the slide seat 6 facing the base 1.

[0072] Furthermore, refer to Figure 2 and Figure 3The blocking block 31 has a blocking surface parallel to the steel sheet 8, and the blocking surface is provided with a rubber pad 311.

[0073] It is understandable that the rubber pad 311 is fixedly connected to the blocking surface; after the steel sheet 8 is installed in the mounting position 21, the blocking surface is parallel to the part of the steel sheet 8 located outside the mounting position 21, and the blocking block 31 blocks the steel sheet 8 through the rubber pad 311 and the blocking surface.

[0074] Since the blocking block 31 has a blocking surface parallel to the steel sheet 8, and the blocking surface is provided with a rubber pad 311, on the one hand, the actual working conditions of the steel sheet 8 can be simulated more realistically by using the blocking surface and the rubber pad 311, so as to further improve the accuracy of fatigue life detection of the steel sheet 8. On the other hand, it can increase the contact area between the steel sheet 8 and the blocking block 31, so as to reduce the situation where the pressure between the blocking block 31 and the steel sheet 8 is too large due to the small contact area between the steel sheet 8 and the blocking block 31, which may easily lead to premature breakage of the steel sheet 8. This also further improves the accuracy of fatigue life detection of the steel sheet 8.

[0075] This application does not specify the exact location of the blocking block 31 and the mounting position 21. Preferably, refer to... Figure 1 and Figure 2 The blocking block 31 is disposed on the second base 3, and the mounting position 21 is disposed on the first base 2, so that the first base 2 can be used to move the steel sheet 8 during the fatigue life test. Of course, in other embodiments, the blocking block 31 can also be disposed on the first base 2, and the mounting position 21 can be disposed on the second base 3, so that the first base 2 can be used to move the blocking block 31 during the fatigue life test of the steel sheet 8.

[0076] Furthermore, refer to Figure 2 and Figure 3 The second base 3 is provided with a bracket 32, the blocking block 31 is hinged to the bracket 32, and the bracket 32 ​​is provided with a locking member 322 for locking the blocking block 31.

[0077] It is understandable that the hinge axis of the blocking block 31 and the bracket 32 ​​is set perpendicular to the first direction.

[0078] Specifically, when testing different steel sheets 8, the blocking block 31 is first adjusted according to the tilt angle of the part of the steel sheet 8 exposed outside the mounting position 21 so that the blocking surface is parallel to the tilt angle of the part of the steel sheet 8 exposed outside the mounting position 21. When adjusting the blocking block 31, the locking member 322 is first released from locking the blocking block 31, and then the blocking block 31 is rotated, so that the blocking surface on the blocking block 31 rotates with the blocking block 31, and finally the blocking surface on the blocking block 31 moves to the required position, and then the locking member 322 is used to lock the blocking block 31.

[0079] Since the second base 3 is provided with a bracket 32, the blocking block 31 is hinged to the bracket 32, and the bracket 32 ​​is provided with a locking member 322 for locking the blocking block 31, thus, on the one hand, the blocking surface can be adjusted according to different steel sheets 8 to increase the flexibility of the tire mold steel sheet detection device and increase the accuracy of fatigue life detection of steel sheet 8; on the other hand, the second base 3 can be locked by the locking member 322 to increase the stability of the second base 3.

[0080] This application does not specifically limit the structure of the locking element 322; preferably, refer to... Figure 2 and Figure 3 The bracket 32 ​​is provided with an arc-shaped groove 321, and the locking member 322 includes a pair of locking bolts passing through the blocking block 31 and the arc-shaped groove 321.

[0081] It is understandable that the center of the arc groove 321 is located on the hinge axis between the blocking block 31 and the bracket 32. The locking bolt pair includes a bolt and a nut threaded onto the bolt. The blocking block 31 is provided with a hole structure for the bolt to pass through. The central axis of the bolt is parallel to and spaced apart from the hinge axis between the blocking block 31 and the bracket 32. After the locking bolt pair locks the blocking block 31, the bolt head and nut are located on opposite sides of the bracket 32, and the bolt head and nut abut against the outer side of the bracket 32, so as to lock and position the blocking block 31 using the locking bolt pair.

[0082] Specifically, when adjusting the blocking surface, first tighten the locking bolt assembly to separate the bolt head and nut from the bracket 32. Then, rotate the blocking block 31 so that it drives the blocking surface to rotate. Simultaneously, the locking bolt assembly rotates relative to the arc-shaped groove 321 under the action of the blocking block 31. When the blocking surface rotates to the desired position, stop rotating the blocking block 31 and tighten the locking bolt assembly so that the bolt head and nut are pressed against the bracket 32, thereby achieving the adjustment of the blocking surface. During the inspection of the steel sheet 8, due to the obstruction of the blocking surface, the steel sheet 8 moves from the middle position to the set position. During this process, the part of the steel sheet 8 in contact with the blocking surface will deform. At this time, the steel sheet 8 applies force to the blocking block 31 through the rubber pad 311 and the blocking surface, so that the blocking block 31 overcomes the clamping force between the locking bolt pair and the bracket 32 ​​and rotates with the deformation of the steel sheet 8. This further and more realistically shows the stress condition of the steel sheet 8 when the molded tire is demolded, thereby further increasing the accuracy of the fatigue life test of the steel sheet 8.

[0083] In other embodiments, the locking member 322 includes a locking bolt threaded to the bracket 32, which is used to lock the blocking block 31 by pressing against it; or, the locking member 322 includes a locking bolt, the blocking block 31 is rotatably connected to a rotating block, the bracket 32 ​​is rotatably connected to a support block, the locking bolt passes through the support block and can rotate relative to the support block, and the locking bolt is threaded to the rotating block, so that the bolt head of the locking bolt is blocked by the support block, and the screw of the locking bolt drives the rotating block to move along the axial direction of the screw, thereby adjusting the blocking block 31.

[0084] Furthermore, refer to Figure 1 and Figure 2 A pressure sensor 5 is provided between the second base 3 and the base 1. The pressure sensor 5 is located between the second drive assembly 7 and the sliding seat 6.

[0085] Understandably, the second drive assembly 7 drives the sliding seat 6 through the pressure sensor 5.

[0086] Since the pressure sensor 5 is located between the second drive assembly 7 and the sliding seat 6, when the second base 3 is subjected to pressure applied by the steel sheet 8, the second base 3 can transmit the pressure to the pressure sensor 5 through the sliding seat 6, so as to ensure the accuracy of the pressure sensor 5 in detecting pressure.

[0087] It should be noted that in the scheme where only one pressure sensor 5 is provided, and the pressure sensor 5 is located between the first base 2 and the first drive assembly 4, the second drive assembly 7 is directly connected to the sliding seat 6.

[0088] In other embodiments, the second drive assembly 7 can be omitted, and a locking component can be provided for the sliding seat 6 to lock the sliding of the sliding seat 6, thereby reducing the production cost of the tire mold steel sheet detection device; or, the base 1 has a support column, and the second base 3 is fixedly connected to the support column through the pressure sensor 5.

[0089] This application does not specify the sliding connection method between the first base 2 and the base 1. Preferably, refer to... Figure 1 and Figure 2 The base 1 has a slide rail 12 arranged parallel to the first direction, and the first base 2 is provided with a slider 22 that slides with the slide rail 12.

[0090] It is understandable that the slider 22 is fixedly connected to the first base 2.

[0091] Since the base 1 has a slide rail 12 arranged parallel to the first direction, and the first base 2 is provided with a slider 22 that slides with the slide rail 12, the first base 2 and the base 1 can be slidably connected by the slider 22 and the slide rail 12 to increase the connection stability between the first base 2 and the base 1. On the other hand, the first base 2 can be guided by the slider 22 and the slide rail 12 to increase the motion stability of the first base 2.

[0092] In other embodiments, one of the first base 2 and the base 1 is provided with a groove, and the other is provided with a sliding block that is slidably connected to the groove, so as to realize the sliding connection between the first base 2 and the base 1.

[0093] This application does not specifically limit the structure of the first drive assembly 4. Preferably, the first drive assembly 4 includes a first servo motor and a first lead screw pair. The first lead screw pair includes a first lead screw arranged parallel to the first direction and a first nut threadedly connected to the first lead screw. The first lead screw is driven and connected to the output shaft of the first servo motor. The first servo motor is fixedly connected to the base 1. The first lead screw is rotatably connected to the base 1. A connecting body 41 is fixedly connected to the outside of the first nut. The connecting body 41 is also provided with a slider 22 that slides with the slide rail 12, so that the first servo motor drives the first lead screw, thereby causing the first nut to drive the connecting body 41 to move along the axial direction of the first lead screw, thereby driving the first base 2 to move.

[0094] In addition, the movement distance of the first base 2 can be precisely controlled by controlling the number of rotations of the output shaft of the first servo motor.

[0095] This application does not specify a particular method for the transmission connection between the first lead screw and the output shaft of the first servo motor. Preferably, the first lead screw is coaxially and fixedly connected to the output shaft of the first servo motor to achieve the transmission connection between the first lead screw and the output shaft of the first servo motor. In other embodiments, the first lead screw can also be connected to the output shaft of the first servo motor via a coupling or other means.

[0096] In other embodiments, the first drive assembly 4 includes any one of a hydraulic cylinder, a pneumatic cylinder, or an electric actuator to drive the first base 2 to move along a first direction using the hydraulic cylinder, pneumatic cylinder, or electric actuator.

[0097] This application does not specifically limit the structure of the second drive assembly 7. Preferably, the second drive assembly 7 includes a second servo motor and a second lead screw pair. The second lead screw pair includes a second lead rod slidably connected to the support frame 111 and a second nut threadedly connected to the second lead rod. The second lead rod is arranged parallel to the central axis of the guide column 11. The second servo motor is fixedly connected to the support frame 111, and the second nut is rotatably connected to the support frame 111. The second servo motor is used to drive the second nut to rotate, so that the output shaft of the second servo motor drives the second nut to rotate relative to the second lead rod, thereby causing the second lead rod to slide relative to the support frame 111 along the axial direction of the guide column 11, so as to drive the sliding seat 6.

[0098] In addition, the movement distance of the second base 3 can be precisely controlled by controlling the number of rotations of the output shaft of the second servo motor.

[0099] In other embodiments, the second drive assembly 7 includes any one of a hydraulic cylinder, a pneumatic cylinder, or an electric actuator to drive the second base 3 to move axially along the guide post 11 using the hydraulic cylinder, pneumatic cylinder, or electric actuator.

[0100] This application does not specify a particular number of pressure sensors 5; preferably, refer to... Figure 1 and Figure 2 There are two pressure sensors 5. One pressure sensor 5 is located between the first drive assembly 4 and the first base 2, and the other pressure sensor 5 is located between the second base 3 and the base 1. On the one hand, when detecting the fatigue life of the steel sheet 8, the fatigue life of the steel sheet 8 can be detected by the pressure value change of either of the two pressure sensors 5. On the other hand, the two pressure sensors 5 can also be used to calibrate the tire mold steel sheet detection device, and the tire mold steel sheet detection device can still continue to be used when either pressure sensor 5 fails.

[0101] To facilitate understanding of the technical solutions in this application, the pressure sensor 5 located between the first drive assembly 4 and the first base 2 is defined as the first pressure sensor, and the pressure sensor 5 located between the base 1 and the second base 3 is defined as the second pressure sensor. One end of the first pressure sensor is fixedly connected to the slider, one end of the first pressure sensor is fixedly connected to the first base 2, one end of the second pressure sensor is fixedly connected to the second lead screw, and the other end of the second pressure sensor is fixedly connected to the sliding seat 6.

[0102] This application does not specify the formation method of the mounting position 21, but refers to... Figure 1 and Figure 2Preferably, a mounting block is fixedly connected to the top of the first base 2, and the mounting block is provided with a plug groove for mounting the steel sheet 8, so that the mounting block and the plug groove together form the mounting position 21.

[0103] Preferably, the insertion groove is inclined towards the side where the blocking block 31 is located from the groove opening to the bottom of the groove, so that the steel sheet 8 installed in the mounting position 21 is in an inclined state, so as to more realistically simulate the actual working conditions of the steel sheet 8, thereby further improving the accuracy of fatigue life detection of the steel sheet 8.

[0104] To increase the connection stability between the steel sheet 8 and the mounting position 21, a fixing bolt can be threaded onto the side of the mounting block. The bolt can extend into the insertion groove so that the end of the fixing bolt away from the bolt head can be pressed against the steel sheet 8 to further fix the steel sheet 8, thereby increasing the connection stability between the steel sheet 8 and the mounting position 21.

[0105] Of course, in other embodiments, the insertion slot can also be provided on the first base 2 so that the insertion slot provided on the first base 2 forms the mounting position 21.

[0106] In a preferred embodiment, refer to Figure 2 and Figure 3 The mounting position 21 is equipped with a heating element 211, which is used to heat the steel sheet 8.

[0107] It is understood that the heating element 211 is located on the mounting block, and the heating element 211 can heat the mounting position 21 so that the heating element 211 heats the steel sheet 8 through the mounting position 21.

[0108] Since the mounting position 21 is equipped with a heating element 211, which is used to heat the steel sheet 8, the steel sheet 8 can be heated to the temperature when the tire is vulcanized, thereby more realistically simulating the actual working conditions of the steel sheet 8, so as to further improve the accuracy of fatigue life detection of the steel sheet 8.

[0109] This application does not specifically limit the structure of the heating element 211. Preferably, the heating element 211 is a heating tube that passes through the mounting block to improve the heating efficiency of the steel sheet 8. In other embodiments, the heating element 211 may also be a heating wire or other structure capable of heating the mounting position 21.

[0110] Furthermore, refer to Figure 2 A pressure sensor 5 is provided between the first base 2 and the first drive assembly 4, and a heat insulation plate 212 is provided between the pressure sensor 5 and the first base 2 and / or between the mounting position 21 and the first base 2.

[0111] It is understood that there may be one heat insulation plate 212, and the heat insulation plate 212 is located between the first base 2 and the first pressure sensor, or the heat insulation plate 212 is located between the mounting block and the first base 2; or, there may be two heat insulation plates 212, with one heat insulation plate 212 located between the first base 2 and the first pressure sensor, and the other heat insulation plate 212 located between the mounting block and the first base 2.

[0112] Since a heat insulation plate 212 is provided between the pressure sensor 5 and the first base 2 and / or between the mounting position 21 and the first base 2, thermal isolation between the mounting position 21 and the first base 2 and between the pressure sensor 5 and the first base 2 can be achieved. On the one hand, the heat loss of the heating element 211 can be reduced to improve the heating efficiency of the steel sheet 8, thereby improving the fatigue life detection efficiency of the steel sheet 8. On the other hand, the influence of high temperature on the pressure sensor 5 can be reduced to ensure the accuracy of pressure detection by the pressure sensor 5 and the service life of the pressure sensor 5.

[0113] The better one is to refer to Figure 2 Two heat insulation plates 212 are provided. One heat insulation plate 212 is located between the first base 2 and the mounting block, and the other heat insulation plate 212 is located between the first pressure sensor and the first base 2. The other heat insulation plate 212 is located between the first base 2 and the mounting position 21, so as to improve the heat insulation effect of the first pressure sensor, thereby ensuring the stable operation and service life of the first pressure sensor.

[0114] This application also discloses a testing method for the tire mold steel sheet testing device described above, comprising the following steps:

[0115] S1. Install steel sheet 8. Install steel sheet 8 in mounting position 21 so that part of steel sheet 8 is inserted into the insertion groove, and at the same time make the length of the part of steel sheet 8 outside the insertion groove equal to the height of steel sheet 8 protruding from the surface of the tire mold cavity.

[0116] S2. The first driving component 4 drives the first base 2 to move along the first direction and collects the pressure value of each sampling cycle through the pressure sensor 5.

[0117] S3. When the first base 2 moves to the set position, the first drive assembly 4 stops working and determines whether the steel sheet 8 meets the qualification requirements based on the minimum pressure value F1 and the maximum pressure value F2 of the pressure sensor 5 during the movement of the first base 2.

[0118] By adopting the above-mentioned detection method, on the one hand, the fatigue life of steel sheet 8 can be detected, and on the other hand, when detecting the fatigue life of steel sheet 8, the influence of the height, width, thickness and shape of steel sheet 8 on the fatigue life of steel sheet 8 can be fully considered, thereby improving the accuracy of the fatigue life detection of steel sheet 8.

[0119] Furthermore, step S3 includes: when the steel sheet 8 contacts the blocking block 31, the position of the first base 2 at this time is recorded as the middle position, and the pressure value of the pressure sensor 5 during the movement of the first drive assembly 4 toward the middle position is recorded as the minimum pressure value F1. Then, the first drive assembly 4 continues to drive the first base 2 to move along the first direction. After the first base 1 has moved a set distance, the position of the first base 2 at this time is recorded as the set position, and the maximum pressure value of the pressure sensor 5 during the movement of the first drive assembly 4 from the middle position toward the set position is recorded as the maximum pressure value F2. If the difference between F2 and F1 is less than the preset value or the steel sheet 8 breaks during the movement of the first base 2 from the middle position toward the set position, the steel sheet 8 is deemed unqualified. If the difference between F2 and F1 is greater than the preset value, the steel sheet 8 is deemed qualified.

[0120] It should be noted that the set distance is the height value of the steel sheet 8 protruding from the surface of the tire mold cavity, and the set distance is equal to the height value of the steel sheet 8 protruding from the surface of the tire mold cavity.

[0121] Specifically, when performing fatigue life testing on steel sheet 8, N tests are required. If, during the first test, the difference between the maximum pressure value F2 and the minimum pressure value F1 is less than the set value, steel sheet 8 can be directly determined to be unqualified. If the difference between the maximum pressure value F2 and the minimum pressure value F1 is greater than the set value, the first drive assembly 4 is activated to drive the first base 2 to the initial position, and then the above steps are followed for the next test until N tests are completed. If, during the testing process, the difference between the maximum pressure value F2 and the minimum pressure value F1 is less than the set value or steel sheet 8 breaks, steel sheet 8 is determined to be unqualified, and no further testing is required. However, if, in each of the N tests, the difference between the maximum pressure value F2 and the minimum pressure value F1 is greater than the set value, steel sheet 8 is determined to be qualified.

[0122] The testing method in this application also includes a preparation stage. The preparation stage requires determining the depth at which the steel sheet 8 is installed in the mounting position 21, the angle between the installation direction of the steel sheet 8 and the tire removal direction, and the highest temperature during the tire vulcanization process, based on the model of the steel sheet 8. Then, the steel sheet 8 is installed according to the depth at which it is installed in the mounting position 21. The blocking block 31 is adjusted according to the angle between the installation direction of the steel sheet 8 and the tire removal direction. The steel sheet 8 is heated using the heating element 211 according to the highest temperature during the tire vulcanization process. At the same time, the blocking block 31 is adjusted according to the depth at which the steel sheet 8 is inserted into the mounting position 21.

[0123] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0124] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0125] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A detection method, characterized in that, The device for detecting steel sheet in tire molds includes a base (1), a first base (2) slidably connected to the base (1) in a first direction, a second base (3) disposed on the base (1), and a first drive assembly (4) for driving the first base (2) to move. A pressure sensor (5) is provided between the first base (2) and the first drive assembly (4) and / or between the second base (3) and the base (1). One of the first base (2) and the second base (3) is provided with a mounting position (21) for mounting steel sheet (8), and the other is provided with a blocking block (31) capable of blocking the steel sheet (8). The detection method includes the following steps: S1. Install steel plate (8) and install steel plate (8) in the mounting position (21); S2. The first driving component (4) drives the first base (2) to move along the first direction and collects the pressure value of each sampling cycle through the pressure sensor (5); S3. When the first base (2) moves to the set position, the first drive assembly (4) stops working and judges whether the steel sheet (8) meets the qualification requirements based on the minimum pressure value F1 and the maximum pressure value F2 of the pressure sensor (5) during the movement of the first base (2). Step S3 above includes: When the steel sheet (8) comes into contact with the blocking block (31), the position of the first base (2) at this time is recorded as the middle position; If the difference between F2 and F1 is less than the preset value or the steel sheet (8) breaks during the movement of the first substrate (2) from the middle position toward the set position, the steel sheet (8) is deemed unqualified; if the difference between F2 and F1 is greater than the preset value, the steel sheet (8) is deemed qualified.

2. The detection method according to claim 1, characterized in that, The base (1) has a guide post (11), and the tire mold steel sheet detection device further includes a sliding seat (6) slidably connected to the guide post (11) along the axial direction of the guide post (11) and a second driving component (7) for driving the sliding seat (6) to move. The central axis of the guide post (11) is set at an angle with the first direction, and the second base (3) is disposed on the sliding seat (6).

3. The detection method according to claim 2, characterized in that, The guide post (11) is provided with a support frame (111), which is located on the side of the sliding seat (6) away from the base (1), and the second drive assembly (7) is provided on the support frame (111).

4. The detection method according to claim 2, characterized in that, The blocking block (31) has a blocking surface parallel to the steel sheet (8), and the blocking surface is provided with a rubber pad (311).

5. The detection method according to claim 4, characterized in that, The second base (3) is provided with a bracket (32), the blocking block (31) is hinged to the bracket (32), and the bracket (32) is provided with a locking member (322) for locking the blocking block (31).

6. The detection method according to claim 5, characterized in that, The bracket (32) is provided with an arc groove (321), and the locking member (322) includes a pair of locking bolts passing through the blocking block (31) and the arc groove (321).

7. The detection method according to claim 2, characterized in that, A pressure sensor (5) is provided between the second base (3) and the base (1), and the pressure sensor (5) is located between the second drive assembly (7) and the sliding seat (6).

8. A detection method according to any one of claims 1-7, characterized in that, The base (1) has a slide rail (12) arranged parallel to the first direction, and the first base (2) is provided with a slider (22) that slides in cooperation with the slide rail (12).

9. A detection method according to any one of claims 1-7, characterized in that, The mounting position (21) is provided with a heating element (211), which is used to heat the steel sheet (8).

10. The detection method according to claim 9, characterized in that, A pressure sensor (5) is provided between the first substrate (2) and the first drive assembly (4), and a heat insulation plate (212) is provided between the pressure sensor (5) and the first substrate (2) and / or between the mounting position (21) and the first substrate (2).

11. The detection method according to claim 1, characterized in that, The pressure value of the pressure sensor (5) during the movement of the first drive component (4) toward the middle position is recorded as the minimum pressure value F1. The first drive component (4) continues to drive the first base (2) to move along the first direction. When the first base (1) moves a set distance, the position of the first base (2) at this time is recorded as the set position. The maximum pressure value of the pressure sensor (5) during the movement of the first drive component (4) from the middle position toward the set position is recorded as the maximum pressure value F2.

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