Optical measuring apparatus for tire parts and method of use thereof

Abstract

The application belongs to the technical field of optical thickness measurement, and discloses a kind of optical measuring equipment for tire parts and its using method, wherein the optical measuring equipment for tire parts, including three-layer section frame, each layer position of three-layer section frame is equipped with plane belt conveyor, chain wheel drive assembly and second motor are installed on three-layer section frame, longitudinal beam plate is fixedly installed at the tail end position of the uppermost layer plane belt conveyor on three-layer section frame, both ends of longitudinal beam plate are fixedly connected with I-shaped vertical beam, upper lead blank plate is fixed on the outer wall of the side away from three-layer section frame of longitudinal beam plate, two I-shaped vertical beams are provided with blank pressing and leveling assembly on the side away from upper lead blank plate, thickness measurement adjusting assembly is installed between two I-shaped vertical beams, a plurality of laser transmission measuring thickness components are installed on the driving end of thickness measurement adjusting assembly, the application can flatten, straighten tire cord layer into ideal geometric state without transverse bending, and accurately measure the thickness of cord layer.

Description

Technical Field

[0001] This invention belongs to the field of optical thickness measurement technology, specifically, it relates to an optical measurement device for tire parts and its usage method. Background Technology

[0002] The core application of laser thickness gauges in the inspection of semi-finished tire products (such as film and ply) is to achieve high-precision online thickness measurement through a non-contact dual-sensor differential method. This system relies on a rigid frame with extremely high mechanical stability straddling the production line. On this frame, two high-precision laser sensors are installed symmetrically above and below the path of the material being measured. The laser beams of these two sensors must be vertically and coaxially aligned to form an ideal measurement line. The thickness measurement process begins with crucial baseline calibration: when no material is passing through, the system records the readings from the upper and lower sensors to the conveyor belt. The sum of the distances to the reference surface is used as a fixed reference value for subsequent calculations. When materials such as curtains pass through the measurement area at a constant speed, the upper sensor measures the distance to the upper surface of the material in real time, and the lower sensor measures the distance to the lower surface of the material simultaneously. The core thickness calculation does not rely on a single reading, but is calculated in real time by the system processor as the difference between the fixed reference value and the sum of the distances measured by the two sensors at this moment. It can also be linked with other equipment on the production line to make the system intelligent. When the material thickness is detected to exceed the set range, the system can automatically adjust the production parameters or issue an alarm to remind the operator to intervene.

[0003] Currently, the fabric layer from the calender outlet to the cooling production line needs to be conveyed by belts or roller conveyors. During this process, the fabric layer is subjected to gravity, friction, and other external forces, which can cause its shape to change, resulting in fluctuations or shaking. These fluctuations are caused by factors such as uneven movement of the conveyor belt, the flexibility of the fabric layer itself, and changes in transmission speed. When the fabric layer shakes up and down or becomes uneven during the conveying process, the measurement results of the laser thickness gauge are easily interfered with. At this time, the distance measured by the sensor may be inaccurate due to the fluctuations, resulting in inaccurate thickness measurement. This is especially true when the material thickness changes slightly, where the error caused by shaking may be particularly prominent. Summary of the Invention

[0004] The purpose of this invention is to provide an optical measuring device for tire parts and its usage method. The tire cord layer, which has been produced by mold and is to be tested for thickness, enters the uppermost planar belt conveyor of a three-layer profile frame. At this time, the tire cord layer moves in an S-shape and is in a flat and vertical state between the beginning and end of two adjacent planar belt conveyors. This section of the tire cord layer is introduced to the pressing and leveling assembly through the longitudinal beam plate and the upper blank plate. The thickness measurement and adjustment assembly adjusts the position of the laser beam thickness measuring assembly according to the specifications of the tire cord layer to be tested. During the continuous movement of the tire cord layer, the laser beam thickness measuring assembly measures the thickness of the leveled cord layer, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An optical measuring device for tire parts includes a three-layer profile frame. A planar belt conveyor is installed at each layer of the three-layer profile frame. A sprocket drive assembly is installed on one side of the surface of the three-layer profile frame, providing rotational power to the uppermost and lowermost planar belt conveyors. A second motor is installed on one side of the back of the three-layer profile frame to drive the middle layer planar belt conveyors. A longitudinal beam is fixedly installed at the tail end of the uppermost planar belt conveyor on the three-layer profile frame, with a tool fixedly connected to both ends of the longitudinal beam. The vertical beams and longitudinal beams have an upper blank guide plate fixed on the outer wall of the side away from the three-layer profile frame. The two vertical beams are equipped with a blank pressing and leveling component on the side away from the upper blank guide plate. A thickness measurement and adjustment component is installed between the two vertical beams. Several laser-guided thickness measurement components are installed on the drive end of the thickness measurement and adjustment component. A touch interface panel is installed at the lower position of the surface of the three-layer profile frame. The control output of the touch interface panel is electrically connected to the control output of the sprocket drive component, the second motor, the blank pressing and leveling component, and the thickness measurement and adjustment component, respectively.

[0006] The following are further optimizations of the above technical solution by the present invention: The sprocket drive assembly includes a base plate fixedly mounted on one side surface of the three-layer profile frame, a first motor fixedly mounted on the back of the base plate, a sprocket disk fixedly mounted on the power output shaft of the first motor, sprocket disks also fixedly mounted on the power input shafts of the uppermost and lowermost planar belt conveyors, a tension sprocket rotatably mounted on one side of the surface of the three-layer profile frame, and a transmission chain is installed between the tension sprocket and the three sprocket disks.

[0007] Further optimization: A connecting beam is fixed between the opposite outer walls of the two I-beams. A cavity is provided on the side of the connecting beam near the pressing and leveling component, and the upper blank guide plate is fixedly installed in the cavity.

[0008] Further optimization: A lower blank guide plate is fixedly installed on the outer wall of the connecting beam at the lower position; notches are opened on the left and right outer walls of the two I-beams near their middle positions; a lower beam plate is fixedly installed on the side of the two I-beams away from the blank pressing and leveling components.

[0009] Further optimization: The pressing and leveling assembly includes an outer beam plate fixedly installed on the outer wall of the two I-beams away from the three-layer profile frame. A U-shaped inner plate is provided on the inner side of the outer beam plate. Several double wheel rows are installed on the outer wall of the U-shaped inner plate near the upper blank guide plate. An automatic telescopic rod is installed on one side of the outer wall of one of the outer beam plates. The piston rod end of the automatic telescopic rod is fixedly connected to one side of the outer wall of the U-shaped inner plate.

[0010] Further optimization: A spacer is provided between the upper and lower outer beams.

[0011] Further optimization: The thickness measurement adjustment component includes an L-shaped side platform fixedly installed on the upper end of two I-beams. A convex slide block is slidably installed on the two L-shaped side platforms away from the outer wall in the vertical direction. Two sliding seats are symmetrically slidably installed at the bottom end of the L-shaped side platforms. A U-shaped arm is fixedly installed between the two sliding seats in the length direction of the longitudinal beam plate. The laser thickness measurement component is installed on the two U-shaped arms on the left and right sides.

[0012] Further optimization: A pneumatic slide is installed on one of the outer walls of one of the L-shaped side platforms, and the lower end of the piston rod of the pneumatic slide is fixedly connected to the upper end of the convex slide block.

[0013] Further optimization: Two V-shaped inclined grooves are opened on one side of the outer wall of the convex slide block, and pulleys are rotatably installed on the back of the slide block, with the pulleys movably installed in the inclined grooves.

[0014] The present invention also provides a method of using an optical measuring device for tire parts, which includes the following steps based on the above-mentioned optical measuring device for tire parts: S101: Adjust the horizontal linear distance between the left and right laser sensors in the laser thickness measurement component by adjusting the thickness measurement adjustment component, so that its preset position is located at the optimal measurement reference position suitable for the corresponding specification of the curtain layer product. S102: After the fabric layer is produced from the upstream mold, it is introduced into an S-shaped three-dimensional conveyor line consisting of a three-layer profile frame and a flat belt conveyor. Driven by the sprocket drive assembly and the second motor, it is carried and transported by a multi-layer flat belt conveyor. The fabric layer travels along a preset S-shaped path, allowing it to stretch evenly and release internal stress under the natural action of gravity and belt friction, initially eliminating large-scale wave deformation. When the fabric layer reaches the transition section where the upper and lower belts meet, it will be in a short and stable vertical flat state. S103: Under the guidance of the longitudinal beam plate and the upper blank plate, the fabric layer is precisely introduced into the blank pressing and leveling component. The blank pressing and leveling component is used to apply controllable and uniform local pressure to the fabric layer before and after entering the laser measurement area, forcibly smoothing out minor warps or wrinkles, and ensuring that the fabric layer is flat and stable in the local area of ​​the measurement point at the moment it passes through the laser beam. S104: While the fabric layer passes through the pressing and leveling components continuously and smoothly, the leveled fabric layer passes through the laser thickness measuring components at a constant speed. The laser thickness measuring components capture and calculate the distances from the left and right sensors to the left and right sides of the fabric, respectively, and calculate the instantaneous thickness value of the material in real time based on the differential principle. The entire measurement process is continuous and uninterrupted, generating a complete contour curve that reflects the thickness change of the entire length of the fabric layer. The touch interactive panel displays the thickness curve, the current thickness value, statistical results, and whether the preset alarm limit has been exceeded in real time.

[0015] The present invention, by adopting the above technical solution, has at least the following beneficial effects: 1. In this invention, the tire cord layer, produced by the mold and awaiting thickness testing, enters the uppermost planar belt conveyor of the three-layer profile frame. At this time, the tire cord layer moves in an S-shape and is in a flat, vertical state between the beginning and end of two adjacent planar belt conveyors. This section of the tire cord layer is introduced to the pressing and leveling component via the longitudinal beam plate and the upper blank plate. The thickness measurement and adjustment component adjusts the position of the laser-guided thickness measuring component according to the specifications of the tire cord layer to be tested. During the continuous movement of the tire cord layer, the laser-guided thickness measuring component measures the thickness of the leveled cord layer. This releases the uneven stress and thermal stress remaining inside the material when it comes out of the calender. At the same time, with the uniform support of the planar belt, the large wave deformation and wrinkles that may occur during the initial conveying process are gradually smoothed out. When the cord layer is in a flat, vertical state between the beginning and end of the adjacent belts, the material is in a controlled, straight, and ideal geometric state without lateral bending in this transition section. The laser-guided thickness measuring component is accurately aligned with the surface of the cord layer to ensure the reliability of the measurement results.

[0016] 2. In this invention, the longitudinal beam plate and the upper blank guide plate serve as guiding and preliminary positioning mechanisms, ensuring that the fabric layer is introduced into the blank leveling assembly at the correct position and angle. Just before the fabric layer enters the laser thickness measurement area, the blank leveling assembly applies a localized, controllable flattening force, thereby eliminating any microscopic warping or slight vibrations that may still exist after long-distance transport. This forces the fabric layer to achieve absolute flatness and stability within the tiny localized area irradiated by the laser beam at the instant it passes through the measuring beam. This solves the problem in traditional methods where the soft and easily deformable fabric layer causes non-coaxial correspondence between the upper and lower surfaces at the measurement point, ensuring that the upper and lower laser sensors measure two corresponding points in the same normal direction. Furthermore, different specifications of fabric layers, such as steel wire fabric and nylon fabric, have different nominal thicknesses and tolerance ranges. The thickness measurement adjustment assembly precisely adjusts the overall spacing of the laser thickness measurement assembly, enabling it to adapt to products of different thicknesses and setting the measurement range within the optimal working range of sensor linearity and sensitivity. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of an embodiment of the present invention. Figure 3 ; Figure 4 This is a schematic diagram of the main structure of an embodiment of the present invention; Figure 5 This is a three-dimensional sectional view of the overall structure in an embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the pressing and leveling component in an embodiment of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the assembly structure of the I-beam and the connecting beam in an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the pressing and leveling component in an embodiment of the present invention. Figure 2 ; Figure 9 This is an assembly diagram of the blank leveling component and the thickness measurement and adjustment component in an embodiment of the present invention; Figure 10 This is a three-dimensional structural diagram of the thickness measurement and adjustment component in an embodiment of the present invention. Figure 1 ; Figure 11 This is a three-dimensional structural diagram of the thickness measurement and adjustment component in an embodiment of the present invention. Figure 2 .

[0018] In the diagram: 1-Three-layer profile frame; 2-Planar belt conveyor; 3-Sprocket drive assembly; 301-Base plate; 302-First motor; 303-Tension sprocket; 304-Sprocket disc; 305-Transmission chain; 4-Second motor; 5-Longitudinal beam plate; 501-Lower beam plate; 502-Lower blank guide plate; 6-I-beam; 601-Notch section; 602-Connecting beam; 603-Cavity; 7-Upper blank guide plate; 8- Pressing and leveling assembly; 801-Outer beam plate; 802-Spacing section; 803-Automatic telescopic rod; 804-U-shaped inner plate; 805-Double wheel row; 9-Thickness measurement and adjustment assembly; 901-L-shaped side platform; 902-Pneumatic slide table; 903-Slide seat; 904-Pulley; 905-Convex slide block; 906-Inclined groove; 907-U-shaped arm; 10-Laser-based thickness measurement assembly; 11-Touch interactive panel. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 5 As shown, an optical measuring device for tire parts includes a three-layer profile frame 1. A planar belt conveyor 2 is installed at each layer of the three-layer profile frame 1. A sprocket drive assembly 3 is installed on one side of the surface of the three-layer profile frame 1. The sprocket drive assembly 3 is used to output rotational power to the planar belt conveyors 2 of the uppermost and lowermost layers. A second motor 4 is installed on one side of the back of the three-layer profile frame 1 to drive the planar belt conveyor 2 of the middle layer. A longitudinal beam plate 5 is fixedly installed at the tail end of the planar belt conveyor 2 of the uppermost layer on the three-layer profile frame 1. I-beams 6 are fixedly connected to both ends of the longitudinal beam plate 5. An upper blank plate 7 is fixed on the outer wall of the longitudinal beam plate 5 away from the three-layer profile frame 1. A blank pressing and leveling assembly 8 is provided on the side of the two I-beams 6 away from the upper blank plate 7. A thickness measuring and adjusting assembly 9 is installed between the two I-beams 6. Several laser-guided thickness measuring assemblies 10 are installed on the drive end of the thickness measuring and adjusting assembly 9.

[0021] A touch panel 11 is installed at the lower part of the surface of the three-layer profile frame 1. The control output terminals of the touch panel 11 are electrically connected to the control output terminals of the sprocket drive assembly 3, the second motor 4, the blank leveling assembly 8, and the thickness measurement and adjustment assembly 9, respectively. The touch panel 11 outputs control signals to independently control the corresponding sprocket drive assembly 3, the second motor 4, the blank leveling assembly 8, and the thickness measurement and adjustment assembly 9 to work.

[0022] The sprocket drive assembly 3 includes a base plate 301 fixedly mounted on one side surface of the three-layer profile frame 1. A first motor 302 is fixedly mounted on the back of the base plate 301. A sprocket disc 304 is fixedly mounted on the power output shaft of the first motor 302. Sprocket discs 304 are also fixedly mounted on the power input shafts of the uppermost and lowermost planar belt conveyors 2. A tension sprocket 303 is also rotatably mounted on one side of the surface of the three-layer profile frame 1. A transmission chain 305 is installed between the tension sprocket 303 and the three sprocket discs 304.

[0023] With this design, when the sprocket drive assembly 3 is working, the first motor 302 works according to the instructions of the touch interaction panel 11. At this time, the drive shaft of the first motor 302 transmits rotational power to the uppermost and lowermost planar belt conveyors 2 through the sprocket disc 304 and the transmission chain 305. That is, the uppermost and lowermost planar belt conveyors 2 are in a synchronous and unidirectional working state, thereby eliminating the phenomenon of fabric stretching, wrinkling or piling caused by speed difference, and providing a basis for continuous and uniform speed measurement.

[0024] At the same time, the rotation direction of the second motor 4 is opposite to that of the first motor 302. The fabric layer forms a continuous S-shaped travel path on the three-layer planar belt conveyor 2, which can fully release stress and initially stretch and flatten before entering the core measurement area by utilizing the material's own weight and the natural tension generated by the turning.

[0025] The fabric layer passing through the bottom flat belt conveyor 2 also needs to be collected by an external winding device to ensure that the fabric layer has a certain tension during the conveying and measurement process.

[0026] like Figure 6 , Figure 7 and Figure 8 As shown, a connecting beam 602 is fixed between the opposite outer walls of the two I-beams 6. A cavity 603 is provided on the side of the connecting beam 602 near the pressing and leveling component 8, and the upper blank plate 7 is fixedly installed in the cavity 603.

[0027] In this embodiment, there are two lower beam plates 602, which are arranged parallel to each other and spaced apart. The two ends of the lower beam plates 602 are fixedly connected to the corresponding I-beams 6 and assembled into an integral structure.

[0028] A lower blanking plate 502 is fixedly installed on the outer wall of the connecting beam 602 at the lower position. Notches 601 are opened on the left and right outer walls of the two I-beams 6 near the middle position. A lower beam plate 501 is fixedly installed on the side of the two I-beams 6 away from the blanking and leveling component 8.

[0029] In this embodiment, the longitudinal beam plate 5 and the upper guide plate 7 guide the pre-conveyed fabric smoothly and undisturbed from the wider conveying plane to the measuring channel where the cavity 603 is located, while the lower guide plate 502 is used to guide the measured fabric layer to the next layer of planar belt conveyor 2.

[0030] The pressing and leveling assembly 8 includes an outer beam plate 801 fixedly installed on the outer wall of the two I-beams 6 away from the three-layer profile frame 1. A U-shaped inner plate 804 is provided on the inner side of the outer beam plate 801. Several double wheel rows 805 are installed on the outer wall of the U-shaped inner plate 804 near the upper blank plate 7.

[0031] An automatic telescopic rod 803 is installed on one side of the outer wall of one of the outer beam plates 801. The piston rod end of the automatic telescopic rod 803 is fixedly connected to one side of the outer wall of the inner plate 804.

[0032] In this embodiment, a spacer 802 is provided between the upper and lower outer beam plates 801; the spacer 802 is connected to the measurement area.

[0033] When the pressing and leveling assembly 8 is working, the operator controls the automatic telescopic rod 803 through the touch interactive panel 11 according to the thickness of the fabric layer. The automatic telescopic rod 803 pushes the inner plate 804 and each double wheel row 805 on the inner plate 804 to move towards the upper drawing plate 7 and the lower drawing plate 502 until the double wheel row 805 flattens and presses down the fabric layer. This applies a local and controllable flattening force to the fabric layer before and after measurement, improving measurement accuracy.

[0034] In this embodiment, the automatic telescopic rod 803 is one of an electric telescopic rod, a hydraulic cylinder, or a telescopic cylinder. The specific model of the automatic telescopic rod 803 can be freely selected according to the moving distance of the inner plate 804.

[0035] like Figure 9 , Figure 10 and Figure 11 As shown, the thickness measurement adjustment assembly 9 includes an L-shaped side platform 901 fixedly installed on the upper end of two I-beams 6. A convex slide block 905 is slidably installed on the two L-shaped side platforms 901 away from the outer wall in the vertical direction. Two sliding seats 903 are symmetrically slidably installed at the bottom end of the L-shaped side platforms 901. A U-shaped arm 907 is fixedly installed between the two sliding seats 903 in the length direction of the longitudinal beam plate 5. The laser beam thickness measurement assembly 10 is installed on the two U-shaped arms 907 on the left and right sides.

[0036] In this embodiment, the L-shaped side platform 901 and the convex slide block 905 are slidably connected by a slide rail and a slider. The slide rail is fixedly installed on the L-shaped side platform 901, and the slider is fixedly installed on the convex slide block 905. The slider is slidably connected to the slide rail.

[0037] In this embodiment, the U-shaped arm 907 is disposed in the corresponding notch 601, and the notch 601 provides the U-shaped arm 907 with a space for movement.

[0038] One of the L-shaped side platforms 901 has a pneumatic slide 902 installed on one of its outer walls. The lower end of the piston rod of the pneumatic slide 902 is fixedly connected to the upper end of the convex slide 905. The pneumatic slide 902 is activated to drive the convex slide 905 to move up and down.

[0039] Two V-shaped inclined grooves 906 are provided on one outer wall of the convex slide block 905. Pulleys 904 are rotatably installed on the back of the lower slide block 903, and the pulleys 904 are movably installed in the inclined grooves 906.

[0040] When the thickness measurement and adjustment component 9 is working, the pneumatic slide 902 extends or retracts according to the instructions of the touch interaction panel 11. Taking the upward retraction of the piston rod of the pneumatic slide 902 as an example, the pneumatic slide 902 drives the convex slide 905 to move upward. Since the pulley 904 on the back of the lower slide seat 903 is located in the inclined groove 906, the two lower slide seats 903 at the lower end of the L-shaped side platform 901 move closer to each other, that is, the distance between the two U-shaped arms 907 is reduced, which makes it convenient to use.

[0041] The laser sensor in the laser thickness measurement assembly 10 is mounted on the U-shaped arm 907. When the distance between the two U-shaped arms 907 changes, the distance between the two corresponding laser sensors on the left and right sides also changes accordingly, so that the laser sensor always works in the optimal measurement range and linear region. No matter how the product thickness changes, it can ensure the highest measurement sensitivity and accuracy, which facilitates product changeover.

[0042] In this embodiment, the longitudinal beam plate 5, the I-beam 6, the upper blank guide plate 7, the blank pressing and leveling component 8, the thickness measurement and adjustment component 9, and the laser thickness measurement component 10 together constitute a thickness detection device. Two sets of the thickness detection device are provided, and the two sets of thickness detection devices are respectively set at the beginning and end positions of two adjacent planar belt conveyors. This enables two thickness measurement operations to be performed on the curtain layer that is conveyed on the three-layer profile frame 1 and the three sets of planar belt conveyors 2 in an S-shaped path, thereby improving the accuracy and comprehensiveness of the measurement data.

[0043] In this embodiment, the touch interaction panel 11 is existing technology. Its specific structure includes a main controller and a touch display screen. The touch display screen is communicatively connected to the main controller. The main controller is used to output control signals or receive feedback and detection signals. The touch display screen is used to input debugging control parameters or display control operation parameters.

[0044] The present invention also provides a method of using an optical measuring device for tire parts, which includes the following steps based on the above-mentioned optical measuring device for tire parts: S101: Adjust the horizontal linear distance between the left and right laser sensors in the laser through-beam thickness measurement component 10 by adjusting the thickness measurement adjustment component 9, so that its preset position is located at the optimal measurement reference position suitable for the corresponding specification of the curtain layer product.

[0045] In step S101, the working principle of the thickness measurement adjustment component 9 is as follows: the pneumatic slide 902 extends or retracts according to the instructions of the touch interaction panel 11. At this time, the piston rod of the pneumatic slide 902 drives the convex slide 905 to move up or down. At this time, the pulley 904 moves in the inclined groove 906, and then drives the U-shaped arm 907 to move through the lower slide seat 903, so that the two U-shaped arms 907 move towards each other or away from each other. The movement of the U-shaped arms 907 drives the laser thickness measurement component 10 to move, thereby adjusting the horizontal linear distance between the two laser sensors on the left and right, which is convenient for use.

[0046] S102: After the fabric layer is produced from the upstream mold, it is introduced into an S-shaped three-dimensional conveyor line consisting of a three-layer profile frame 1 and a flat belt conveyor 2. Driven by the sprocket drive assembly 3 and the second motor 4, it is carried and transported by the multi-layer flat belt conveyor 2. The fabric layer travels along a preset S-shaped path, which allows it to stretch evenly and release internal stress under the natural action of gravity and belt friction, initially eliminating large-scale wave deformation. When the fabric layer reaches the transition section where the upper and lower belts meet, the fabric layer will be in a short and stable vertical flat state.

[0047] In step S102, the working principle of the sprocket drive assembly 3 is as follows: the first motor 302 works according to the instructions of the touch interaction panel 11. At this time, the drive shaft of the first motor 302 transmits rotational power to the uppermost and lowermost planar belt conveyors 2 through the sprocket disc 304 and the transmission chain 305. That is, the uppermost and lowermost planar belt conveyors 2 are in a synchronous and unidirectional working state. The rotation direction of the second motor 4 is opposite to that of the first motor 302. The fabric layer forms a continuous S-shaped travel path on the three-layer planar belt conveyor 2. It can fully release stress and initially stretch and flatten before entering the core measurement area by utilizing the material's own weight and the natural tension generated by the turning.

[0048] S103: Under the guidance of the longitudinal beam plate 5 and the upper blanking plate 7, the fabric layer is precisely introduced into the blanking and leveling component 8. The blanking and leveling component 8 is used to apply controllable and uniform local pressure to the fabric layer before and after entering the laser measurement area, forcibly smoothing out minor warps or wrinkles, and ensuring that the fabric layer is flat and stable in the local area of ​​the measurement point at the moment it passes through the laser beam.

[0049] In step S103, the working principle of the pressing and leveling component 8 is as follows: the operator controls the automatic telescopic rod 803 to work through the touch interactive panel 11 according to the thickness of the curtain layer. The automatic telescopic rod 803 pushes the inner plate 804 and each double wheel row 805 on the inner plate 804 to move towards the upper drawing plate 7 and the lower drawing plate 502 until the double wheel row 805 flattens and presses down the curtain layer, thereby applying a local and controllable flattening force to the curtain layer before and after measurement, improving the measurement accuracy.

[0050] S104: While the fabric layer passes through the pressing and leveling component 8 continuously and smoothly, the leveled fabric layer passes through the laser thickness measuring component 10 at a constant speed. The laser thickness measuring component 10 captures and calculates the distances from the left and right sensors to the left and right sides of the fabric, and calculates the instantaneous thickness value of the material in real time based on the differential principle. The entire measurement process is continuous and uninterrupted, generating a complete contour curve that reflects the thickness change of the entire length of the fabric layer. The touch interaction panel 11 displays the thickness curve, the current thickness value, the statistical results, and whether the preset alarm limit is exceeded in real time.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An optical measuring apparatus for tire parts, characterized by: The system includes a three-layer profile frame (1), with a planar belt conveyor (2) installed at each layer of the three-layer profile frame (1). A sprocket drive assembly (3) is installed on one side of the surface of the three-layer profile frame (1), which outputs rotational power to the planar belt conveyors (2) at the top and bottom layers. A second motor (4) is installed on one side of the back of the three-layer profile frame (1) to drive the planar belt conveyor (2) in the middle layer. A longitudinal beam plate (5) is fixedly installed at the tail end of the planar belt conveyor (2) at the top layer of the three-layer profile frame (1). I-beams (6) are fixedly connected to both ends of the longitudinal beam plate (5). The longitudinal beam plate (5) is far away from the top layer of the planar belt conveyor (2). An upper blanking plate (7) is fixed on one side of the outer wall of the three-layer profile frame (1), and a blank pressing and leveling assembly (8) is provided on the side of the two I-beams (6) away from the upper blanking plate (7). A thickness measurement and adjustment assembly (9) is installed between the two I-beams (6). Several laser-guided thickness measurement assemblies (10) are installed on the drive end of the thickness measurement and adjustment assembly (9). A touch interaction panel (11) is installed at the lower position of the surface of the three-layer profile frame (1). The control output end of the touch interaction panel (11) is electrically connected to the control output end of the sprocket drive assembly (3), the second motor (4), the blank pressing and leveling assembly (8) and the thickness measurement and adjustment assembly (9), respectively. The pressing and leveling assembly (8) includes an outer beam plate (801) fixedly installed on the outer wall of the two I-beams (6) away from the three-layer profile frame (1). A U-shaped inner plate (804) is provided on the inner side of the outer beam plate (801). Several double wheel rows (805) are installed on the outer wall of the U-shaped inner plate (804) near the upper blank plate (7). An automatic telescopic rod (803) is installed on the outer wall of one of the outer beam plates (801). The piston rod end of the automatic telescopic rod (803) is fixedly connected to the outer wall of one side of the U-shaped inner plate (804).

2. The optical measuring device for tire parts according to claim 1, characterized in that: The sprocket drive assembly (3) includes a base plate (301) fixedly mounted on one side surface of the three-layer profile frame (1), a first motor (302) fixedly mounted on the back of the base plate (301), a sprocket disc (304) fixedly mounted on the power output shaft of the first motor (302), a sprocket disc (304) also fixedly mounted on the power input shaft of the uppermost planar belt conveyor (2) and the lowermost planar belt conveyor (2), a tension sprocket (303) is also rotatably mounted on one side of the surface of the three-layer profile frame (1), and a transmission chain (305) is installed between the tension sprocket (303) and the three sprocket discs (304).

3. The optical measuring device for tire parts according to claim 2, characterized in that: A connecting beam (602) is fixed between the opposite outer walls of the two I-beams (6). A cavity (603) is provided on the side of the connecting beam (602) near the pressing and leveling assembly (8). The upper blank plate (7) is fixedly installed in the cavity (603).

4. The optical measuring device for tire parts according to claim 3, characterized in that: A lower blanking plate (502) is fixedly installed on the outer wall of the connecting beam (602) at the lower position. Notches (601) are opened on the left and right outer walls of the two I-beams (6) near the middle position. A lower beam plate (501) is fixedly installed on the side of the two I-beams (6) away from the blanking leveling component (8).

5. The optical measuring device for tire parts according to claim 4, characterized in that: An interval (802) is provided between the upper and lower outer beams (801).

6. The optical measuring device for tire parts according to claim 5, characterized in that: The thickness measurement adjustment component (9) includes an L-shaped side platform (901) fixedly installed on the upper end of two I-beams (6). The two L-shaped side platforms (901) are slidably installed with convex slide blocks (905) on the outer wall away from each other. Two sliding seats (903) are symmetrically slidably installed at the bottom end of the L-shaped side platforms (901). A U-shaped arm (907) is fixedly installed between the two sliding seats (903) in the length direction of the longitudinal beam plate (5). The laser thickness measurement component (10) is installed on the two U-shaped arms (907) on the left and right sides.

7. The optical measuring device for tire parts according to claim 6, characterized in that: A pneumatic slide (902) is installed on one of the outer walls of one of the L-shaped side platforms (901), and the lower end of the piston rod of the pneumatic slide (902) is fixedly connected to the upper end of the convex slide block (905).

8. An optical measuring device for tire parts according to claim 7, characterized in that: Two V-shaped grooves (906) are opened on one side of the outer wall of the convex slide block (905). Pulleys (904) are rotatably installed on the back of the slide block (903). The pulleys (904) are movably installed in the grooves (906).

9. A method of using an optical measuring device for tire parts, based on the optical measuring device for tire parts according to any one of claims 1-8, characterized in that: Includes the following steps: S101: Adjust the horizontal linear distance between the left and right laser sensors in the laser thickness measurement component (10) by adjusting the thickness measurement adjustment component (9) so that its preset position is located at the best measurement reference position suitable for the corresponding specification of the curtain layer product; S102: After the fabric layer is produced from the upstream mold, the fabric layer is introduced into the S-shaped three-dimensional conveyor line consisting of a three-layer profile frame (1) and a flat belt conveyor (2). Under the drive of the sprocket drive assembly (3) and the second motor (4), the fabric layer is carried and transported by the multi-layer flat belt conveyor (2). The fabric layer travels along the preset S-shaped path, so that under the natural action of gravity and belt friction, it is evenly stretched and releases internal stress, initially eliminating large wave deformation. When the fabric layer runs to the transition section where the upper and lower belts meet, the fabric layer will be in a short and stable vertical flat state. S103: Under the guidance of the longitudinal beam plate (5) and the upper blanking plate (7), the fabric layer is precisely introduced into the blanking and leveling assembly (8). The blanking and leveling assembly (8) is used to apply controllable and uniform local pressure to the fabric layer before and after entering the laser measurement area, forcibly ironing out minor warping or wrinkles, and ensuring that the fabric layer is flat and stable in the local area of ​​the measurement point at the moment it passes through the laser beam. S104: While the fabric layer passes through the pressing and leveling component (8) continuously and smoothly, the leveled fabric layer passes through the laser thickness measuring component (10) at a constant speed. The laser thickness measuring component (10) captures and calculates the distances from the left and right sensors to the left and right sides of the fabric, and calculates the instantaneous thickness value of the material in real time based on the differential principle. The entire measurement process is continuous and uninterrupted, generating a complete contour curve that reflects the thickness change of the entire length of the fabric layer. The touch interactive panel (11) displays the thickness curve, current thickness value, statistical results, and whether the preset alarm limit is exceeded in real time.

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