Tire blank circumference measuring device

Abstract

This invention provides a tire blank circumference measuring device, comprising: a measuring roller, a detection element, and a processor. The measuring roller is movably arranged to contact the tread of the tire blank, and the rotation of the tire blank drives the measuring roller to rotate. Multiple counting holes are provided on one end face of the measuring roller, with each counting hole evenly spaced along the circumferential direction of the measuring roller and extending along the axial direction of the measuring roller. The detection element is disposed on one side of the end face of the measuring roller with the multiple counting holes, and the detection end of the detection element corresponds to any one of the multiple counting holes. The detection element is used to detect the number of counting holes passed through the detection end of the detection element when the tire blank rotates one revolution. The processor is communicatively connected to the detection element. This tire blank circumference measuring device effectively solves the technical problem of distorted measurement results caused by manual measurement of the outer circumference of the tire blank in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of measuring device technology, specifically to a tire blank circumference measuring device. Background Technology

[0002] In tire molding processes, especially in the production of giant tires, the control of the tire blank circumference is extremely stringent. To ensure the stability of subsequent mass production and product consistency, the outer circumference of each tire blank must be accurately measured and recorded as an important basis for quality control and process verification.

[0003] Currently, the industry commonly uses manual methods to measure the outer circumference of tire blanks: operators place the tire blank on an inspection platform and manually measure its outer circumference using a steel tape measure. However, this method has several technical drawbacks: First, manual operation makes it difficult to ensure that the steel tape measure always circles the preset position, which can easily lead to deviation or tilting, resulting in distorted measurement results. Secondly, the steel measuring tape does not fit the curved surface of the tire blank well enough, especially in areas with high curvature such as the tire shoulder, which are prone to being suspended or locally loose, resulting in the measured circumference value being generally larger than the actual size. In addition, the measurement process requires manual rotation of the heavy tire blank, which is laborious and difficult to achieve uniform and stable rotation. This not only results in low efficiency but also poses safety hazards.

[0004] Therefore, existing technologies still need further development. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a tire blank circumference measuring device to solve the technical problem that the measurement results are distorted due to the use of manual methods to measure the outer circumference of the tire blank in the prior art.

[0006] To achieve the above-mentioned technical objectives, according to one aspect of this utility model: a tire blank circumference measuring device is provided, comprising: a measuring roller, a detection element, and a processor. The measuring roller is movably arranged to contact the tread of the tire blank, and the tire blank rotates to drive the measuring roller to rotate. A plurality of counting holes are provided on one end face of the measuring roller, each counting hole being evenly spaced along the circumferential direction of the measuring roller, and each counting hole extending along the axial direction of the measuring roller. The detection element is disposed on one side of the end face of the measuring roller with the plurality of counting holes; and the detection end of the detection element corresponds to any one of the plurality of counting holes. The detection element is used to detect the number of counting holes passed through the detection end of the detection element when the tire blank rotates one revolution. The processor is communicatively connected to the detection element, and the processor is used to receive the detection signal output by the detection element and process the received detection signal to calculate the circumference of the tire blank.

[0007] Furthermore, the measuring roller includes: a roller body, which is movably arranged, with a curved surface for contacting the tread of the tire blank, so that the rotation of the tire blank drives the roller body to rotate; a counting disk, which is mounted on one end of the roller body and is coaxially arranged with the roller body; and a plurality of counting holes are provided on the end face of the counting disk away from the roller body, with the plurality of counting holes evenly spaced along the circumferential direction of the counting disk.

[0008] Furthermore, the tire blank circumference measuring device also includes: a controller, which is communicatively connected to the processor, and is used to receive and store the circumference data of the tire blank calculated by the processor, and to compare the circumference data of the tire blank with preset data.

[0009] Furthermore, the tire blank circumference measuring device also includes: a first guide rail, which is set on an installation reference and extends along a preset trajectory; a movable component, which is movably set on the first guide rail along the extension direction of the first guide rail; a frame, which is mounted on the movable component; and a measuring roller, which is movably set on the frame so that the frame and the measuring roller can move closer to or away from the tire blank by moving the movable component.

[0010] Furthermore, the tire blank circumference measuring device also includes: a screw, which is rotatably mounted on the frame and located on the side of the frame closer to the tire blank; the screw extends along the axial direction of the measuring roller; an adjusting block, which has an internal thread hole adapted to the external thread of the screw, and the adjusting block is threadedly engaged with the screw; the measuring roller is movably mounted on the adjusting block so that the movement of the screw drives the moving part and the measuring roller to move along the extension direction of the screw.

[0011] Furthermore, the tire blank circumference measuring device also includes: a roller bracket, which is mounted on the frame and located on the side of the frame closer to the tire blank; a screw rotatably mounted on the roller bracket; and a drive member, which is mounted on the roller bracket and has its drive end connected to the screw to drive the screw to rotate.

[0012] Furthermore, the tire blank circumference measuring device also includes: a swing arm, one end of which is rotatably mounted on an adjusting block around the axis of a screw; and a measuring roller rotatably mounted on the other end of the swing arm, so that the measuring roller can be driven to contact or move away from the tread of the tire blank by the movement of the swing arm.

[0013] Furthermore, the tire blank circumference measuring device also includes: a telescopic component, the fixed end of which is mounted on a roller bracket, and the free end of which is rotatably connected to a swing arm; along the extension direction of the free end of the telescopic component, the height of the free end of the telescopic component gradually increases.

[0014] Furthermore, the tire blank circumference measuring device also includes: a second guide rail, which extends along the extension direction of the screw and is mounted on the roller bracket, and the second guide rail and the screw are spaced apart along the height direction; and a guide block, which is mounted on the side of the adjusting block near the second guide rail and is slidably mounted on the second guide rail along the extension direction of the second guide rail.

[0015] Furthermore, the tire blank circumference measuring device further includes: a first limiting member disposed on the end of the first guide rail away from the tire blank, the first limiting member being used to limit the travel of the moving member moving away from the tire blank along the extension direction of the first guide rail; and / or, a second limiting member disposed on the end of the first guide rail near the tire blank, the second limiting member being used to limit the travel of the moving member moving near the tire blank along the extension direction of the first guide rail.

[0016] Beneficial effects: The present invention provides a tire blank circumference measuring device comprising: a measuring roller, a detection element, and a processor. The measuring roller is movably arranged to approach or move away from the tire blank. When the measuring roller approaches the tire blank to a set position, it contacts the tire tread of the tire blank, and during the rotation of the tire blank, friction drives the measuring roller to rotate synchronously. Multiple counting holes are provided on one end face of the measuring roller, evenly spaced along the circumferential direction of the measuring roller, and each counting hole extends along the axial direction of the measuring roller. The detection element is disposed on one side of the end face of the measuring roller with multiple counting holes, and the detection end of the detection element corresponds to any one of the multiple counting holes. When it is necessary to measure the circumference of the tire blank, the detection element detects the number of counting holes passing through the detection end of the detection element when the tire blank rotates one revolution, and converts each counting hole passing through the detection end of the detection element into a recognizable electrical signal pulse, i.e., a detection signal. The processor is connected in communication with the detection device. The processor receives the detection signal output by the detection device and processes the received detection signal to calculate the circumference of the embryo.

[0017] Therefore, synchronous rotation is achieved through direct contact between the measuring roller and the tire tread. The roller, with its evenly distributed counting holes on its end face, interacts with the detection element, converting each counting hole at the detection end of the element into an electrical signal pulse. The processor counts and processes the pulses based on the output signals from the detection element, thus achieving high-precision measurement of the tire circumference. This method effectively avoids measurement distortion problems caused by factors such as loose tape measure fit, deviation from the tire tread centerline, tensile deformation, or reading errors when using traditional manual measurement, significantly improving the accuracy and repeatability of the measurement results. Simultaneously, the detection element monitors the movement path of the counting holes in real time, providing rapid response, stable signals, clear and reliable output pulses, and strong anti-interference capabilities, ensuring accurate counting. Furthermore, during the measurement process, the system automatically completes signal acquisition, transmission, and circumference calculation after only one rotation of the tire tread, eliminating the need for manual navigation, recording, or subsequent calculations. This simplifies operation, shortens the detection cycle, and significantly improves detection efficiency, making it suitable for online rapid detection and quality control in mass production scenarios. Furthermore, the system can be automatically calibrated by setting the circumference of the measuring rollers and the number of counting holes. When changing measuring rollers of different diameters to adapt to different tire blank specifications, the corresponding parameters only need to be updated in the processor to quickly switch the measurement mode. It has strong versatility and is especially suitable for the circumference measurement needs of large-size, heavy-duty tire blanks such as giant engineering tires and mining tires. This tire blank circumference measuring device can effectively solve the technical problem of inaccurate measurement results caused by the manual measurement of the outer circumference of the tire blank in the existing technology. Attached Figure Description

[0018] Figure 1 A first-view schematic diagram of the tire blank circumference measuring device provided according to the present invention is shown. Figure 2 A second-view schematic diagram of the tire blank circumference measuring device provided according to the present invention is shown. Figure 3 A schematic diagram of the measuring roller of the tire blank circumference measuring device provided by this utility model is shown; Figure 4 A schematic diagram showing the cooperation between the measuring roller and the detection piece of the tire blank circumference measuring device provided by this utility model is shown.

[0019] The above figures include the following reference numerals: 1. Measuring roller; 10. Counting hole; 11. Roller body; 12. Counting code disk; 2. First guide rail; 3. Moving part; 4. Frame; 5. Screw; 6. Adjusting block; 7. Roller bracket; 8. Swing arm; 9. Telescopic part; 13. Second guide rail; 14. First limiting part; 15. Support shaft; 16. Mounting bracket; 17. Second limiting part; 100. Detection part. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] Please see Figures 1 to 4 According to an embodiment of the present invention, a tire blank circumference measuring device is provided, comprising: a measuring roller 1, a detection element 100, and a processor. The measuring roller 1 is movably arranged to contact the tread of the tire blank, and the tire blank rotates to drive the measuring roller 1 to rotate. A plurality of counting holes 10 are provided on one end face of the measuring roller 1, and each counting hole 10 is evenly spaced along the circumferential direction of the measuring roller 1, and each counting hole 10 extends along the axial direction of the measuring roller 1. The detection element 100 is disposed on one side of the end face of the measuring roller 1 with the plurality of counting holes 10, and the detection end of the detection element 100 is correspondingly disposed to any one of the plurality of counting holes 10. The detection element 100 is used to detect the number of counting holes 10 passing through the detection end of the detection element 100 when the tire blank rotates one revolution. The processor is communicatively connected to the detection element 100, and the processor is used to receive the detection signal output by the detection element 100 and process the received detection signal to calculate the circumference of the tire blank.

[0022] As can be seen, the tire blank circumference measuring device provided by this utility model includes: measuring roller 1, detection element 100 and processor. The measuring roller 1 is movably set and can be used to approach or move away from the tire blank. When the measuring roller 1 approaches the tire blank to a set position, the measuring roller 1 is used to contact the tire surface of the tire blank. Then, during the rotation of the tire blank, the measuring roller 1 is driven to rotate synchronously by friction. Multiple counting holes 10 are provided on one end face of the measuring roller 1. These counting holes 10 are evenly spaced along the circumferential direction of the measuring roller 1, and each counting hole 10 extends along the axial direction of the measuring roller 1. A detection element 100 is disposed on one side of the end face of the measuring roller 1 with the multiple counting holes 10. The detection end of the detection element 100 corresponds to any one of the multiple counting holes 10. When it is necessary to measure the circumference of the tire blank, the detection element 100 is used to detect the number of counting holes 10 passing through its detection end as the tire blank rotates one revolution, and converts each passing hole into a recognizable electrical signal pulse (i.e., a detection signal). A processor is communicatively connected to the detection element 100, and the processor receives the detection signal output by the detection element 100 and processes the received detection signal to calculate the circumference of the tire blank.

[0023] Therefore, synchronous rotation is achieved through direct contact between the measuring roller 1 and the tire tread. The roller, with its evenly distributed counting holes 10 on its end face, cooperates with the detection element 100, converting each counting hole 10 passing through the detection end of the detection element 100 into an electrical signal pulse. The processor counts and processes the pulses based on the detection signals output by the detection element 100, thus achieving high-precision measurement of the tire circumference. This method effectively avoids measurement distortion problems caused by factors such as loose tape measure fit, deviation from the tire tread centerline, tensile deformation, or reading errors when using a traditional manual steel tape measure, significantly improving the accuracy and repeatability of the measurement results. Simultaneously, the detection element 100 monitors the movement path of the counting holes 10 in real time, providing rapid response, stable signals, clear and reliable output pulses, and strong anti-interference capabilities, ensuring accurate counting. Furthermore, during the measurement process, the system automatically completes signal acquisition, transmission, and circumference calculation by simply driving the tire blank to rotate one revolution. This eliminates the need for manual navigation, recording, or subsequent calculations, simplifying operation, shortening the detection cycle, and significantly improving detection efficiency. It is suitable for online rapid detection and quality control in mass production scenarios. Moreover, the system can be automatically calibrated by setting the circumference of the measuring rollers and the number of counting holes. When changing to measuring rollers of different diameters to adapt to different tire blank specifications, simply updating the corresponding parameters in the processor allows for quick switching of measurement modes. This makes it highly versatile and particularly suitable for measuring the circumference of large-size, heavy-duty tire blanks such as giant engineering tires and mining tires. This tire blank circumference measuring device effectively solves the technical problem of distorted measurement results caused by manual measurement of the tire blank's outer circumference in existing technologies.

[0024] Furthermore, there are two measuring rollers 1, which are spaced apart along the axis of the tire blank. The two measuring rollers 1 operate synchronously to measure both sides of the tire blank's tread. This ensures that the circumference of both sides of the tire blank is within a preset range and that the circumference of both sides of the tire blank is consistent, avoiding the omission of deviations, deformations, or local defects caused by single-point measurements, thereby improving the comprehensiveness of the measurement and the accuracy of quality control.

[0025] Furthermore, there are two detection elements 100, each corresponding to one of the two measuring rollers 1. The end faces of the counting holes 10 on the two measuring rollers 1 are positioned opposite each other, meaning the counting hole 10 of each measuring roller 1 is located on the end face furthest from the other measuring roller 1. Both detection elements 100 are communicatively connected to the processor.

[0026] Optionally, the detection element 100 is a proximity switch.

[0027] Specifically, such as Figure 3As shown, the measuring roller 1 includes a roller body 11 and a counting disk 12. The roller body 11 is movably arranged, and its curved surface is designed to contact the tread of the tire blank, so that the rotation of the tire blank drives the roller body 11 to rotate. The counting disk 12 is mounted on one end of the roller body 11 and is coaxially arranged with the roller body 11. Multiple counting holes 10 are provided on the end face of the counting disk 12 away from the roller body 11, and the multiple counting holes 10 are evenly spaced along the circumferential direction of the counting disk 12. With this structural arrangement, the counting disk 12 and the roller body 11 are coaxially mounted, ensuring that the rotation angle of the counting disk 12 is completely consistent with the actual rotation angle of the roller body 11. This ensures that the pulse signal collected by the detection element 100 truly reflects the stroke of the roller body 11, improving the accuracy of the circumference calculation. At the same time, the curved surface of the roller body 11 contacts the tread of the tire blank, and during the measurement process, the curved surface of the roller body 11 contacts the tread of the tire blank with appropriate pressure. While rolling, it plays a certain role in smoothing out the slight bulges or deformations in the tread, which helps to improve the roundness of the tread.

[0028] Furthermore, the counting disk 12 and the roller body 11 are connected in a detachable manner or in a fixed manner.

[0029] Preferably, the counting code disk 12 and the roller body 11 are detachably connected. This design allows for the replacement of measuring rollers 1 with different numbers of counting holes without replacing the entire roller body 11; only the corresponding counting code disk 12 needs to be replaced.

[0030] Specifically, the tire blank circumference measuring device also includes a controller, which is communicatively connected to the processor. The controller receives and stores the circumference data of the tire blank calculated by the processor and compares the circumference data with preset data. With this structure, the controller receives and stores the tire blank circumference data calculated by the processor, forming a complete measurement record database. Each data entry can be associated with production batch, timestamp, and other information, facilitating subsequent querying, statistical analysis, and quality traceability, meeting the requirements of modern intelligent manufacturing for data-driven management. Simultaneously, the controller has a built-in preset circumference tolerance range (i.e., preset data). After receiving the actual measurement value, it automatically compares it with the preset range to quickly determine whether the tire blank meets the process requirements. This function realizes a transformation from "manual reading + subjective judgment" to "automatic identification + objective judgment," significantly improving detection efficiency and judgment consistency.

[0031] Furthermore, when the measurement results exceed the preset range, the controller can immediately issue an audible and visual alarm, trigger a shutdown signal, or mark the defective product to prevent the defective blank from flowing into the next process, effectively avoiding batch quality accidents and ensuring the stability of the production process and product consistency.

[0032] Specifically, such as Figure 1 and Figure 2 As shown, the tire blank circumference measuring device also includes: a first guide rail 2, a moving part 3, and a frame 4. The first guide rail 2 is set on the installation reference and extends along a preset trajectory. The moving part 3 is movably set on the first guide rail 2 along the extension direction of the first guide rail 2. The frame 4 is mounted on the moving part 3. The measuring roller 1 is movably set on the frame 4 so that the frame 4 and the measuring roller 1 move closer to or away from the tire blank through the movement of the moving part 3.

[0033] With the above-described structure, a first guide rail 2 extending along a preset trajectory provides a high-rigidity, low-friction sliding path for the moving component 3. The moving component 3 can slide smoothly along the extension direction of the first guide rail 2, driving the frame 4 and the measuring roller 1 mounted on it to move as a whole, allowing the measuring roller 1 to move closer to or further away from the tire blank. Simultaneously, this structure makes the position of the frame 4 adjustable, thus allowing for flexible adjustment of the relative distance between the measuring roller 1 and the tire tread, ensuring reliable contact between the measuring roller 1 and the tire tread under different working conditions. Most importantly, this design significantly enhances the adaptability of the device, making it compatible with tire blanks of different diameters, effectively expanding the versatility and application range of the measuring device.

[0034] Specifically, such as Figure 2 As shown, the tire blank circumference measuring device also includes: a screw 5 and an adjusting block 6. The screw 5 is rotatably mounted on the frame 4 and is located on the side of the frame 4 closer to the tire blank. The screw 5 extends along the axial direction of the measuring roller 1. The adjusting block 6 is provided with an internal thread hole that matches the external thread of the screw 5, and the adjusting block 6 is threadedly engaged with the screw 5. The measuring roller 1 is movably mounted on the adjusting block 6 so that the movement of the screw 5 drives the moving part 3 and the measuring roller 1 to move along the extension direction of the screw 5.

[0035] With the above-described structure, the screw 5 extends along the axial direction of the measuring roller 1 and forms a helical pair with the adjusting block 6 through internal and external thread engagement. When the screw 5 is rotated, the adjusting block 6 generates a linear displacement in its axial direction, thereby driving the measuring roller 1 to move synchronously. This structure utilizes the lead characteristics of the thread to achieve micron-level position adjustment accuracy, ensuring that the measuring roller 1 can be accurately aligned with the designated area on the tire blank surface, improving the repeatability and consistency of the measurement; and significantly enhancing the adaptability of the device, making it compatible with tire blanks of different widths, effectively expanding the versatility and application range of the measuring device.

[0036] Furthermore, the screw 5 is provided with a first threaded section and a second threaded section, with opposite directions of rotation. There are two measuring rollers 1 and two adjusting blocks 6, with each measuring roller 1 corresponding to one adjusting block 6. One of the two adjusting blocks 6 has a first internal threaded hole that mates with the first threaded section, and the other adjusting block 6 has a second internal threaded hole that mates with the second threaded section, so that rotation of the screw 5 causes the two adjusting blocks 6 to move closer or further apart.

[0037] With this structural design, when the screw 5 is rotated, the two adjusting blocks 6 move inward or outward simultaneously along the screw axis due to the opposite directions of the two threads, thereby synchronously adjusting the spacing of the two measuring rollers 1. A single rotation is sufficient to complete the bilateral position adjustment, avoiding the cumbersome steps and error accumulation associated with adjusting two rollers separately in traditional methods, significantly improving adjustment efficiency and ease of operation. Simultaneously, this structure allows for flexible adjustment of the distance between the two measuring rollers 1 according to the width of the tire blank, ensuring they correspond to the measurement areas on both sides of the tire tread and that each measuring roller 1 is in effective contact with the tire tread. This is particularly suitable for production lines producing tires of various specifications, significantly expanding the applicability and process compatibility of the measuring device. Furthermore, the dual measuring rollers 1 maintain symmetrical movement under the drive of the screw 5, ensuring their symmetrical position relative to the center plane of the tire blank and avoiding measurement deviations caused by uneven loading or force distribution. This symmetrical layout helps to accurately reflect the circumference consistency on both sides of the tire blank, providing more comprehensive data support for quality control.

[0038] Specifically, such as Figure 1 and Figure 2 As shown, the tire blank circumference measuring device also includes: a roller bracket 7 and a drive component. The roller bracket 7 is mounted on the frame 4 and is located on the side of the frame 4 closest to the tire blank. The screw 5 is rotatably mounted on the roller bracket 7. The drive component is mounted on the roller bracket 7, and its drive end is connected to the screw 5 to drive the screw 5 to rotate. With this structure, the roller bracket 7 is fixed to the side of the frame 4 closest to the tire blank, serving as an independent mounting base for the screw 5 and providing it with a stable and highly rigid rotational support. This structure effectively prevents the screw 5 from bending, swaying, or axial movement during rotation, ensuring smooth threaded transmission and improving adjustment accuracy and repeatability. The drive component is mounted on the roller bracket 7, and its drive end is connected to the screw 5, allowing direct electric drive of the screw 5. Users can quickly adjust the distance between the two measuring rollers 1 without manually turning the screw, significantly improving operational efficiency and reducing labor intensity, making it particularly suitable for production scenarios with frequent tire model changes.

[0039] Optionally, the driving component is a drive motor.

[0040] Specifically, such as Figure 1 and Figure 2 As shown, the tire blank circumference measuring device also includes: a swing arm 8, one end of which is rotatably mounted on the adjusting block 6 around the axis of the screw 5; and a measuring roller 1 rotatably mounted on the other end of the swing arm 8, so that the measuring roller 1 can be driven to contact or move away from the tread of the tire blank by the movement of the swing arm 8.

[0041] With the above-described structure, one end of the swing arm 8 rotates around the axis of the screw 5, allowing the measuring roller 1 to swing freely within a certain range. This enables the automatic adjustment of the contact angle and position based on the actual shape and contour of the tire blank surface. This design ensures that the measuring roller 1 always maintains optimal contact with the tire blank tread, improving the accuracy and reliability of the measurement. Simultaneously, the design of the swing arm 8 allows operators to more easily control the contact and separation between the measuring roller 1 and the tire blank tread. Simply swinging the swing arm 8 is sufficient to move the measuring roller 1 closer to or further away, eliminating the need for complex mechanical adjustments, significantly simplifying the operation and improving testing efficiency.

[0042] Furthermore, such as Figure 4 As shown, the tire blank circumference measuring device further includes: a support shaft 15 and a mounting bracket 16. The support shaft 15 is located at the end of the swing arm 8 away from the adjusting block 6, and extends along the axial direction of the measuring roller 1, with the support shaft 15 located on one side of the swing arm 8. The measuring roller 1 is rotatably mounted on the support shaft 15, and the counting code 12 of the measuring roller 1 is located on the side of the roller body 11 of the measuring roller 1 near the support shaft 15. The mounting bracket 16 is mounted on the end of the swing arm 8 away from the adjusting block 6, and a detection element 100 is mounted on the mounting bracket 16, with the detection end of the detection element 100 facing the measuring roller 1.

[0043] Furthermore, there are two swing arms 8, each corresponding to one of the two adjusting blocks 6 and the two measuring rollers 1.

[0044] Furthermore, the support shafts 15 on the two swing arms 8 are arranged opposite each other.

[0045] Specifically, such as Figure 1As shown, the tire blank circumference measuring device also includes a telescopic component 9. The fixed end of the telescopic component 9 is mounted on the roller bracket 7, and the free end of the telescopic component 9 is rotatably connected to the swing arm 8. Along the extension direction of the free end of the telescopic component 9, the height of the free end of the telescopic component 9 gradually increases. With this structural configuration, the telescopic component 9 pushes the swing arm 8 to swing around the axis of the screw 5 through its telescopic movement, causing the measuring roller 1 to smoothly press down onto the tire blank surface. Because the telescopic component has a controllable output force, it can ensure that a constant and appropriate positive pressure is maintained between the measuring roller 1 and the tire surface, effectively preventing slippage or jumping, and ensuring rolling synchronization and measurement accuracy. At the same time, along the telescopic direction, the height of the free end of the telescopic component 9 gradually increases, which means that it not only generates axial displacement during the extension process, but also has a vertical lifting component. When driving the swing arm 8, this lift characteristic allows the measuring roller 1 to approach the tire surface with a gentle arc trajectory, achieving "soft contact," avoiding tread damage or roller jumping caused by rigid impact, and improving operational safety and measurement stability. Furthermore, during the measurement process, if there are local bulges or unevenness in the tire tread, the telescopic component 9 can generate a slight yielding or compensating movement by virtue of its elasticity or controllable telescopic characteristics, so that the measuring roller 1 always conforms to the true contour, avoiding signal interruption or data distortion due to instantaneous resistance, and improving the dynamic adaptability of the system.

[0046] Optionally, the telescopic component 9 is a telescopic cylinder, preferably a pneumatic cylinder.

[0047] Optionally, when the telescopic member 9 is in the extended state, it drives the swing arm 8 to swing towards the tire blank, so that the measuring roller 1 contacts the tread of the tire blank. When the telescopic member 9 is in the retracted state, it drives the swing arm 8 to swing away from the tire blank, so that the measuring roller 1 moves away from the tire blank and returns to the initial position.

[0048] Furthermore, there are two telescopic components 9, and the two telescopic components 9 are set one-to-one with the two swing arms 8.

[0049] The first embodiment of the structure for guiding the adjusting block 6 provided by this utility model is as follows: Figure 2As shown, the tire blank circumference measuring device also includes: a second guide rail 13 and a guide block. The second guide rail 13 extends along the extension direction of the screw 5 and is mounted on the roller bracket 7, with the second guide rail 13 and the screw 5 spaced apart along the height direction. The guide block is mounted on the side of the adjusting block 6 near the second guide rail 13 and is slidably mounted on the second guide rail 13 along the extension direction of the second guide rail 13. With this structural arrangement, the second guide rail 13 is mounted on the roller bracket 7 along the extension direction of the screw 5 and arranged parallel to the screw 5, while the guide block is fixed to the adjusting block 6 and slidably engaged with the second guide rail 13. This provides a guiding path for the adjusting block 6, effectively constraining its degree of freedom of movement and avoiding shaking, tilting, or jamming caused by relying solely on the screw 5 for transmission, ensuring that the measuring roller 1 moves smoothly and linearly along the axial direction. At the same time, the second guide rail 13 and the screw 5 are spaced apart along the height direction, forming a "one-drive, one-guide" double-support layout, constituting a stable parallel support frame. This structure significantly enhances the rigidity of the front end of the frame, effectively suppressing vibration and deformation, and ensuring a smooth and controllable adjustment process. It is especially suitable for high-frequency adjustment or dynamic measurement scenarios.

[0050] The second embodiment of the structure for guiding the adjusting block 6 provided by this utility model is as follows: the tire blank circumference measuring device further includes: a guide rod, which extends along the extension direction of the screw 5, is mounted on the roller bracket 7, and is spaced apart from the screw 5 along the height direction; the adjusting block 6 is movably sleeved on the guide rod along the extension direction of the guide rod.

[0051] Specifically, such as Figure 1 As shown, the tire blank circumference measuring device further includes: a first limiting member 14, which is disposed on the end of the first guide rail 2 away from the tire blank, and the first limiting member 14 is used to limit the travel of the moving member 3 along the extension direction of the first guide rail 2 in a direction away from the tire blank. And / or, the tire blank circumference measuring device further includes: a second limiting member 17, which is disposed on the end of the first guide rail 2 near the tire blank, and the second limiting member 17 is used to limit the travel of the moving member 3 along the extension direction of the first guide rail 2 in a direction near the tire blank.

[0052] With the above-described structure, the first limiting member 14 is installed at the end of the first guide rail 2 away from the tire blank, and is used to limit the maximum travel distance of the moving member 3 in the direction away from the tire blank. When the moving member 3 reaches the preset position, the first limiting member 14 prevents it from continuing to move forward, preventing the moving member 3 from disengaging from the first guide rail 2 due to excessive movement, thereby protecting critical components from accidental damage. Similarly, the second limiting member 17 is disposed at the end of the first guide rail 2 near the tire blank, limiting the maximum travel distance of the moving member 3 in the direction near the tire blank, preventing the moving member 3 from disengaging from the first guide rail 2 due to excessive movement, and avoiding collision with the tire blank.

[0053] Optionally, the first limiting member 14 and the second limiting member 17 can be mechanical stops or feedback elements such as limit switches.

[0054] It should be noted that the embryo is placed on a support structure that supports the embryo and drives it to rotate. This support structure may be part of the device or a separate device.

[0055] Optionally, the tire blank circumference measuring device measures the tire blank as follows: 1. Place the tire blank to be measured on the support structure. Then, the moving part 3 moves along the extension direction of the first guide rail 2 towards the tire blank. When the moving part 3 reaches the preset position, the moving part 3 stops moving to ensure that the measuring roller 1 is within the adjustable range and does not interfere with the tire blank.

[0056] 2. After the moving part 3 is in place, the driving part is started, driving the screw 5 to rotate. Since the screw 5 has a first thread section and a second thread section with opposite directions of rotation, the two adjusting blocks 6 move synchronously towards or away from each other along the axial direction under the threaded engagement, thereby driving the two measuring rollers 1 to adjust their spacing to match the width of the current tire blank, ensuring that the two measuring rollers 1 are respectively aligned with the designated measuring areas on both sides of the tire tread (such as the tire shoulder or tire crown position).

[0057] 3. After the axial position of the measuring roller 1 is adjusted, the two telescopic components 9 move synchronously, with their free ends extending outward. This extension pushes the swing arm 8 to swing downward around the axis of the screw 5, thereby causing the measuring roller 1 to move smoothly downward, so that the curved surface of its roller body 11 can reliably contact the designated area of ​​the tire tread.

[0058] 4. The tire blank rotates once under the drive of the drive device, and the two measuring rollers 1 rotate synchronously through friction. At the same time, the counting code disk 12 set at the end of the measuring roller 1 rotates accordingly, and the detection element 100 also begins to perform detection; the counting holes 10 on it pass through the detection end of the detection element 100 in sequence. Each passing counting hole 10 is identified by the detection element 100 and converted into an electrical signal pulse. When the tire blank completes a full rotation and stops, the two detection elements 100 respectively transmit the collected pulse signals to the processor.

[0059] 5. After receiving the detection signals from the two detection elements 100, the processor counts the number of pulses (i.e., the total number of counting holes passing through the detection end of the detection element 100) and calculates the circumference of both sides of the embryo. The calculation formula is: L=(M / N)×π×D. Where L is the circumference of the embryo, M is the number of pulse signals detected by the detection element 100 (i.e., M counting holes 10 pass through the detection end of the detection element 100), and D is the diameter of the roller body 11 of the measuring roller 1.

[0060] 6. After the processor calculates the circumference of both sides of the tire blank, it transmits the data to the controller. The controller stores the data and compares it with preset data to automatically determine whether the tire blank meets the process requirements. If the deviation exceeds the allowable limit, the controller can trigger an alarm signal or mark the defective product, thus achieving automated quality control.

[0061] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0062] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0063] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0064] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0065] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A device for measuring the circumference of a tire blank, characterized in that, include: A measuring roller (1) is movably arranged to contact the tread of the tire blank, so that the measuring roller (1) can be rotated by the rotation of the tire blank; a plurality of counting holes (10) are provided on one end face of the measuring roller (1), and each of the counting holes (10) is evenly spaced along the circumferential direction of the measuring roller (1), and each of the counting holes (10) extends along the axial direction of the measuring roller (1); A detection element (100) is disposed on one side of the end face of the measuring roller (1) where a plurality of counting holes (10) are provided; and the detection end of the detection element (100) is correspondingly disposed to any one of the plurality of counting holes (10); the detection element (100) is used to detect the number of counting holes (10) passing through the detection end of the detection element (100) when the tire blank rotates one revolution; A processor is communicatively connected to the detection element (100) to receive detection signals output by the detection element (100) and to process the received detection signals to calculate the circumference of the embryo.

2. The tire blank circumference measuring device according to claim 1, characterized in that, The measuring roller (1) includes: Roller body (11), the roller body (11) is movably arranged, the curved surface of the roller body (11) is used to contact the tread of the tire blank, so that the roller body (11) can be rotated by the rotation of the tire blank. A counting code disk (12) is mounted on one end of the roller body (11) and is coaxial with the roller body (11). A plurality of counting holes (10) are provided on the end face of the counting code disk (12) away from the roller body (11), and the plurality of counting holes (10) are evenly spaced along the circumferential direction of the counting code disk (12).

3. The tire blank circumference measuring device according to claim 1, characterized in that, The tire blank circumference measuring device further includes a controller, which is communicatively connected to the processor. The controller is used to receive and store the circumference data of the tire blank calculated by the processor, and to compare the circumference data of the tire blank with preset data.

4. The tire blank circumference measuring device according to claim 1, characterized in that, The tire blank circumference measuring device also includes: The first guide rail (2) is set on the installation reference and extends along a preset trajectory; Movable component (3), which is movably disposed on the first guide rail (2) along the extension direction of the first guide rail (2); A frame (4) is mounted on the movable part (3); the measuring roller (1) is movably disposed on the frame (4) so ​​as to move the frame (4) and the measuring roller (1) closer to or away from the tire blank by means of the movable part (3).

5. The tire blank circumference measuring device according to claim 4, characterized in that, The tire blank circumference measuring device also includes: A screw (5) is rotatably mounted on the frame (4) and the screw (5) is located on the side of the frame (4) closer to the tire blank; the screw (5) extends along the axial direction of the measuring roller (1); Adjusting block (6), the adjusting block (6) is provided with an internal thread hole that matches the external thread of the screw (5), the adjusting block (6) is threadedly engaged with the screw (5); the measuring roller (1) is movably disposed on the adjusting block (6) so that the moving part (3) and the measuring roller (1) can be moved along the extension direction of the screw (5) by the movement of the screw (5).

6. The tire blank circumference measuring device according to claim 5, characterized in that, The tire blank circumference measuring device also includes: A roller bracket (7) is mounted on the frame (4) and the roller bracket (7) is located on the side of the frame (4) closer to the tire blank; the screw (5) is rotatably mounted on the roller bracket (7); A driving component is provided on the roller bracket (7), and the driving end of the driving component is connected to the screw (5) so as to drive the screw (5) to rotate through the driving component.

7. The tire blank circumference measuring device according to claim 6, characterized in that, The tire blank circumference measuring device further includes: a swing arm (8), one end of which is rotatably mounted on the adjusting block (6) around the axis of the screw (5); and a measuring roller (1) is rotatably mounted on the other end of the swing arm (8) so that the measuring roller (1) can be driven to contact or move away from the tread of the tire blank by the movement of the swing arm (8).

8. The tire blank circumference measuring device according to claim 7, characterized in that, The tire blank circumference measuring device further includes: a telescopic member (9), the fixed end of which is mounted on the roller bracket (7), and the free end of which is rotatably connected to the swing arm (8); along the extension direction of the free end of the telescopic member (9), the height of the free end of the telescopic member (9) gradually increases.

9. The tire blank circumference measuring device according to claim 6, characterized in that, The tire blank circumference measuring device also includes: The second guide rail (13) extends along the extension direction of the screw (5), the second guide rail (13) is mounted on the roller bracket (7), and the second guide rail (13) and the screw (5) are spaced apart along the height direction; A guide block is mounted on the side of the adjusting block (6) near the second guide rail (13), and the guide block is slidably disposed on the second guide rail (13) along the extension direction of the second guide rail (13).

10. The tire blank circumference measuring device according to claim 4, characterized in that, The tire blank circumference measuring device also includes: A first limiting member (14) is disposed on one end of the first guide rail (2) away from the tire blank, the first limiting member (14) being used to limit the travel of the moving member (3) along the extension direction of the first guide rail (2) in a direction away from the tire blank; and / or, The second limiting member (17) is disposed on one end of the first guide rail (2) near the tire blank. The second limiting member (17) is used to limit the stroke of the moving member (3) moving in the direction of extension of the first guide rail (2) toward the tire blank.

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