Tire inner liner extrusion automatic feedback control system and method

Abstract

The application provides a tire inner liner extrusion automatic feedback control system and method, which comprises an air tight layer processing assembly, a transition layer processing assembly, a composite assembly and an inner liner processing and collecting assembly; the air tight layer processing assembly produces a tire air tight layer, the transition layer processing assembly produces a tire transition layer, the air tight layer and the transition layer are synchronously produced respectively, the air tight layer processing assembly and the transition layer processing assembly respectively acquire the thickness and the meter weight of the air tight layer and the transition layer, the air tight layer and the transition layer are tightly compressed to form a tire inner liner through the composite assembly, the processing data of the inner liner is acquired in real time during the compression, and the tire inner liner meeting the processing condition is collected through the inner liner processing and collecting assembly.

Description

Technical Field

[0001] This invention relates to the field of automation control, and more particularly to an automatic feedback control system and method for tire inner liner extrusion. Background Technology

[0002] In tire manufacturing control, inner liner extrusion technology and quality are crucial technical areas. Inner liner extrusion technology typically involves extruding two different materials separately and then bonding them together in multiple layers to form an inner liner with specific properties. Among these technologies, the dimensions and weight of the inner liner are extremely important indicators; therefore, controlling the weight per meter and thickness during production becomes a critical issue, as they directly affect product quality and performance. In existing technologies, most manufacturers focus on producing thickness and width, but variations in the porosity of the rubber compound lead to changes in its specific gravity, resulting in significant fluctuations in the finished product's weight. Therefore, as the inner liner is a key component of the tire, our company has validated a weight-based control approach, currently employing an open-loop control method to control weight per meter and thickness. This method primarily controls the production process through preset parameters. For example, the weight per meter and thickness of the airtight layer, transition layer, and the final composite layer can be set, and then controlled through manual adjustments. This open-loop control method leads to the following problems:

[0003] 1. Its control precision is not high, and it is easily affected by the operator's skills and attitude. It requires high operator skills and has a long training period.

[0004] 2. The lag of human adjustment, the operator's thickness measurement habits and the accuracy of data reading, etc. At present, we control it to a given medium thickness and weight per meter standard. However, if employees only adjust the roller gap by measuring the side thickness, it will lead to inaccurate measurement and asymmetry of the left and right side thickness.

[0005] 3. Existing control methods cannot achieve real-time feedback and adjustment; this means that if abnormalities occur during the production process, employees may not be able to detect them in time and make timely adjustments, thus affecting the quality and performance of the products. Summary of the Invention

[0006] The present invention aims to at least solve the technical problems existing in the prior art, and in particular, innovatively proposes an automatic feedback control system and method for tire inner liner extrusion.

[0007] To achieve the above-mentioned objectives of the present invention, the present invention provides an automatic feedback control system for tire inner liner extrusion, comprising: an airtight layer processing assembly, a transition layer processing assembly, a composite assembly, and an inner liner processing collection assembly.

[0008] The airtight layer processing component produces the tire airtight layer, and the transition layer processing component produces the tire transition layer. The airtight layer and the transition layer are produced simultaneously. The airtight layer processing component and the transition layer processing component respectively obtain the thickness and weight per meter of the airtight layer and the transition layer. The airtight layer and the transition layer are tightly pressed together by the composite component to form the tire inner liner. The processing data of the inner liner is obtained in real time during the pressing process. Tire inner liners that meet the processing conditions are collected by the inner liner processing collection component.

[0009] In a preferred embodiment of the above technical solution, the airtight layer processing component includes:

[0010] The airtight layer is pressed by the airtight layer calendering roller and then conveyed to the airtight layer thickness measuring equipment. The airtight layer thickness measuring equipment uses a laser thickness sensor to detect the two sides and the middle part of the pressed airtight layer. The airtight layer with the thickness measured is then transferred to the airtight layer meter scale for weighing. The weighed airtight layer is then transferred to the airtight layer encoder.

[0011] The airtight layer scale (5) and the transition layer scale (6) are used to weigh and detect the weight of the airtight layer and the transition layer of the tire liner, respectively, and generate corresponding airtight layer weight data and transition layer weight data. The measuring ends of the airtight layer encoder (7) and the transition layer encoder (8) receive the tire liner airtight layer and tire liner transition layer output from the airtight layer scale (5) and the transition layer scale (6), respectively. The lengths of the tire liner airtight layer and the tire liner transition layer are detected by the airtight layer encoder (7) and the transition layer encoder (8), and corresponding length dimension data are generated.

[0012] In a preferred embodiment of the above technical solution, the transition layer processing component includes:

[0013] The transition layer calendering roll presses the tire transition layer and conveys the tire transition layer to the transition layer thickness measuring device (104). The transition layer thickness measuring device uses a laser thickness sensor to detect the two sides and the middle part of the tire transition layer being pressed. The tire transition layer with the thickness measured is then conveyed to the transition layer meter scale. The transition layer meter scale is used to weigh the tire transition layer. The weighed tire transition layer is then conveyed to the transition layer encoder to measure the transport length.

[0014] The tire liner airtight layer and tire liner transition layer output by the airtight layer encoder (7) and the transition layer encoder (8) are transported to the input end of the composite equipment (9). The composite equipment (9) can extrude and composite the tire liner airtight layer and tire liner transition layer to form a shaped tire liner.

[0015] In a preferred embodiment of the above technical solution, the composite component includes:

[0016] The completed tire airtight layer and tire transition layer are transported to the lamination position for pressing and lamination. After lamination, the inner liner is formed. The tire inner liner is then transported to the post-lamination encoder to measure the transport length. After the length measurement is completed, it is transported to the post-lamination meter scale. The weighed tire inner liner is then transported to the post-lamination thickness measuring device. After the thickness measurement is completed, the tire inner liner is collected using the post-lamination inner liner curling device.

[0017] This invention also discloses an automatic feedback control method for tire inner liner extrusion, comprising the following steps:

[0018] S1, Simultaneously process and manufacture the tire airtight layer and transition layer. During the processing and manufacturing process, measure the thickness, weight per meter and processing length. If the composite conditions are met, proceed to S2.

[0019] S2, the tire airtight layer and transition layer that meet the composite conditions are composited to form the tire inner liner;

[0020] S3. After the composite tire inner liner is processed, the length is measured, and then the thickness and weight per meter are determined. The inner liner that meets the production requirements is rolled up and collected.

[0021] In a preferred embodiment of the above technical solution, S1 includes:

[0022] S1-1, the airtight layer calendering roller presses the tire airtight layer. After pressing, it is conveyed to the airtight layer thickness measuring device. Several laser sensors measure whether the edge thickness is symmetrical. If it is symmetrical, the thickness difference between the airtight layer drive side thickness 11 and the airtight layer operation side thickness 13 is judged again to see if it is within the set airtight layer symmetry difference amplitude threshold. If the airtight layer symmetry difference amplitude is ≤ 1 threshold, the airtight layer pressing process continues.

[0023] S1-2, if 1 threshold < airtight layer symmetry difference amplitude ≤ 2 thresholds, and the processing duration is greater than the first warning length of the airtight layer, an alarm is triggered, and the roller spacing at the corresponding position of the airtight layer calendering roller is adjusted.

[0024] S1-3, if the two thresholds are less than the symmetrical difference of the airtight layer and the processing duration is greater than the second warning length of the airtight layer, an alarm is triggered and the roller spacing at the corresponding position of the airtight layer calendering roller is adjusted.

[0025] S1-4: While detecting the symmetrical difference in the airtight layer, the thickness of the airtight layer is measured using a laser sensor, and the weight per meter of the airtight layer is detected using an airtight layer meter scale and an airtight layer encoder.

[0026] S1-5, If the weight per meter of the airtight layer is less than the tolerance 1, adjust the thickness of the airtight layer according to the tolerance 1 to ensure that the weight per meter of the airtight layer is within the processing standard value;

[0027] S1-6 If tolerance 1 < airtight layer weight per meter ≤ tolerance 2, and does not exceed the first warning length of the airtight layer, an alarm will be triggered for the processing of the airtight layer thickness without stopping the machine, and adjustments will be made according to tolerance 1 to ensure that the airtight layer weight per meter is within the processing standard value.

[0028] S1-7 If the tolerance 2 is less than the weight per meter of the airtight layer and exceeds the first warning length of the airtight layer, an alarm will be triggered and the machine will be shut down.

[0029] In a preferred embodiment of the above technical solution, step S1 further includes:

[0030] S1-8, the transition layer calender rolls press the tire transition layer. After pressing, the transition layer is conveyed to the transition layer thickness measuring device. Several laser sensors measure whether the edge thickness is symmetrical. If it is symmetrical, the thickness difference between the driving side thickness and the operating side thickness of the transition layer is judged again to see if it is within the set threshold of the symmetrical difference of the transition layer. If the symmetrical difference of the transition layer is ≤ 1 threshold, the transition layer pressing process continues.

[0031] S1-9, if 1 threshold < transition layer symmetry difference amplitude ≤ 2 thresholds, and the processing duration is greater than the first warning length of the transition layer, an alarm is triggered, and the roller spacing at the corresponding position of the transition layer calendering roll is adjusted.

[0032] S1-10, if the two thresholds are less than the symmetrical difference amplitude of the transition layer and the processing duration is greater than the second warning length of the transition layer, an alarm is triggered and the roller spacing at the corresponding position of the transition layer calendering roll is adjusted.

[0033] S1-11, while detecting the amplitude of the symmetrical difference in the transition layer, the thickness of the transition layer is measured by a laser sensor, and the weight per meter of the transition layer is detected by a transition layer meter scale and a transition layer encoder;

[0034] S1-12, If the weight per meter of the transition layer is less than the tolerance 1, adjust the thickness of the transition layer according to the tolerance 1 to ensure that the weight per meter of the transition layer is within the processing standard value;

[0035] S1-13, if tolerance 1 < transition layer weight per meter ≤ tolerance 2, and the first warning length of the transition layer is not exceeded, an alarm is triggered for the processing of the transition layer thickness, the machine is not stopped, and adjustments are made according to tolerance 1 to ensure that the transition layer weight per meter is within the processing standard value;

[0036] S1-14 If the tolerance 2 < the weight per meter of the transition layer and exceeds the first warning length of the transition layer, an alarm will be triggered and the machine will be shut down.

[0037] In a preferred embodiment of the above technical solution, step S3 includes:

[0038] S3-1, after the inner lining is formed by the composite position, the pressed inner lining is conveyed to the inner lining encoder. First, the inner lining stroke distance is measured. After the distance is measured, a laser sensor is used to measure whether the thickness of the inner lining meets the processing standard. If the thickness of the inner lining meets the processing standard, the difference in the weight per meter of the inner lining is judged.

[0039] S3-2, If the weight per meter of the inner lining and the thickness of the inner lining are less than the tolerance after composite layer 1, obtain the weight per meter and thickness data of the transition layer and the airtight layer before composite layer. If there is no abnormality in the data before composite layer, proceed to the next step. If there is an abnormality in the data before composite layer, return to execute the corresponding transition layer and airtight layer execution steps.

[0040] S3-3, if the post-composite tolerance 1 < the weight per meter of the inner lining and the thickness of the inner lining < the post-composite tolerance 2, determine the weight per meter and thickness of the airtight layer and the transition layer before composite, and make real-time corrections to the processing steps of the airtight layer and the transition layer that are being produced.

[0041] S3-4, If the weight per meter after composite exceeds the tolerance 2 after composite, determine whether the composite data of the airtight layer and the transition layer before composite also exceed the corresponding preset threshold. If they exceed the threshold, first ensure the weight per meter of the airtight layer, and then adjust the weight per meter of the transition layer.

[0042] S3-5, if the weight per meter after lamination exceeds the tolerance 2 after lamination, determine whether the lamination data of the airtight layer and the transition layer before lamination also exceed the corresponding preset threshold. If they do not exceed the threshold, first determine whether the length is less than the first warning length after lamination, ensure the weight per meter of the airtight layer first, then adjust the weight per meter of the transition layer, and perform real-time processing adjustments without stopping the machine; if the continuous length is greater than or equal to the first warning length after lamination, then alarm and stop the machine.

[0043] In the preferred embodiment of the above technical solution, the following step needs to be performed before all other steps begin:

[0044] Upon startup, once the pressing line is activated, the screw speed, calendering roll gap, and speed are directly matched to the currently downloaded formula value. If the automatic feedback system is not in operation, the operator needs to make manual adjustments. If the automatic feedback system for weight per meter and thickness measurement is in operation, it will not provide feedback on weight per meter and thickness measurement for 30 seconds after startup, and manual adjustments are not possible. After 30 seconds, the feedback on weight per meter and thickness measurement will be activated, requiring judgment of weight per meter, center thickness, and edge thickness.

[0045] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0046] This invention uses the weight per meter as the core control, and links the control of the middle thickness and the edge thickness to achieve automatic feedback control to ensure that the weight per meter of the airtight layer is stable and controllable.

[0047] Data alignment before and after lamination, guided by the result before curling, enables precise adjustments and avoids the uncontrollability of manual adjustments.

[0048] Real-time thickness measurement is performed on both the operating and driving sides to improve the lateral symmetry of the material. This reduces the unevenness of the tire's mass caused by the asymmetry of the inner liner.

[0049] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0050] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0051] Figure 1 This is a schematic diagram of the control system of the present invention;

[0052] Figure 2 This is a schematic diagram of the composite front thickness measurement of the control system of the present invention;

[0053] Figure 3 This is a schematic diagram of the composite thickness measurement of the control system of the present invention;

[0054] Figure 4 This is a flowchart of the workflow of the present invention;

[0055] Figure 5 This is a three-dimensional structural diagram of the cutting and recycling mechanism of the present invention;

[0056] Figure 6 This is a front view of the system of the present invention;

[0057] Figure 7 This is a three-dimensional structural diagram of the cutting component of the present invention;

[0058] Figure 8 This is a schematic diagram of the cross-sectional structure of the cutting component of the present invention;

[0059] Figure 9 For the present invention Figure 8 Schematic diagram of a local structure in the middle;

[0060] Figure 10 This is a three-dimensional structural diagram of the recycling component of the present invention;

[0061] Figure 11 This is a schematic cross-sectional view of the recycling component of the present invention;

[0062] Figure 12 For the present invention Figure 11 Schematic diagram of the middle section;

[0063] Figure 13For the present invention Figure 12 Cross-sectional structural diagram;

[0064] Figure 14 For the present invention Figure 11 Schematic diagram of a local structure in the middle;

[0065] Figure 15 This is a schematic diagram of the side detection unit and the middle detection unit of the present invention. Detailed Implementation

[0066] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0067] like Figures 1 to 4 As shown, this invention relates to an automated control method for tire component production, and discloses an automatic feedback control system for tire inner liner extrusion.

[0068] This invention relates to an automatic feedback control method for tire inner liner extrusion. During the tire inner liner extrusion process, this invention employs a precise feedback control method using pre- and post-compounding data alignment. Before compounding, three sets of laser thickness gauges are used to detect the center thickness and side thicknesses of the airtight layer and transition layer in real time. Combined with online weight per meter data, adjustments are made based on the weight per meter and thickness standards and tolerances of the airtight layer and transition layer, according to a given adjustment logic. After the airtight layer and transition layer are compounded, an encoder calculates the length data and aligns it with the pre-compounding weight per meter and thickness data for judgment. If the pre- and post-compounding weight per meter and thickness are both acceptable, no adjustment is made. If the post-compounding weight per meter or thickness exceeds the tolerance, the synchronous data needs to be reviewed to determine whether the transition layer or the airtight layer is unacceptable. If there is a clear unacceptability, the unacceptable layer (airtight layer / transition layer) is corrected according to the tolerance. If there is no obvious unacceptability in the airtight layer or transition layer before compounding, adjustments are made to the transition layer in the direction that ensures the weight per meter and thickness of the airtight layer. The edge thickness adjustment logic compares the edge thickness of the drive side and the operating side with the standard, and also requires a comparison of the symmetry of the edge thickness of the drive side and the operating side. If the tolerance is exceeded, the drive side and the operating side of the calender roll need to be adjusted.

[0069] The above control logic is programmed. The programmable controller module transmits the weight and thickness data of the airtight layer and transition layer to the control host. The control host then transmits the information to the control software in the industrial computer. The control software monitors the center and edge thickness values ​​of the airtight layer and transition layer in real time to determine if they exceed the set standard range. If the weight and thickness values ​​of the airtight layer and transition layer are within the set standard range, no roll gap adjustment is performed. If the weight or thickness values ​​of either the airtight layer or transition layer exceed the set standard range, a command is sent to the control host to adjust the calendering roll gap and thickness according to the priority logic of weight and thickness. After adjustment, the control software continues to check whether the weight and thickness measurements exceed the standard until the weight and thickness measurements are within the standard range. This invention can improve the dimensional stability of the inner lining layer, especially the dimensional stability of the airtight layer, thus improving the thickness symmetry of the inner lining layer, making it an ideal control method for inner lining layer extrusion.

[0070] The inner lining is composed of an airtight layer and a transition layer. The design and control process flow and test names are as follows: 1-Airtight layer calendering roll, 2-Transition layer calendering roll, 3-Airtight layer thickness measuring device, 4-Transition layer thickness measuring device, 5-Airtight layer meter scale, 6-Transition layer meter scale, 7-Airtight layer encoder, 8-Transition layer encoder (data alignment, stroke), 9-Composite position, 10-Post-composite encoder, 11-Post-composite meter scale, 12-Post-composite thickness measuring device, 13-Post-composite inner lining layer curling device, 14-Cutting and recycling mechanism.

[0071] The layout of the thickness measurement equipment for the composite front airtight layer and transition layer is as follows: 100-drive side thickness measurement, 111-medium thickness measurement, 100-operation side thickness measurement.

[0072] Layout of equipment for measuring the thickness of the composite lining layer: Measurement of the thickness of the composite lining layer.

[0073] After downloading the formula and starting the machine, the screw speed, calendering roll distance, and speed will be directly matched to the currently downloaded formula value once the extrusion line is activated. If the automatic feedback system is not in operation, the operator needs to make manual adjustments. If the automatic feedback system for weight per meter and thickness measurement is in operation, it will not provide feedback on weight per meter and thickness measurement for 30 seconds after startup, and manual adjustments will not be possible. After 30 seconds, the feedback on weight per meter and thickness measurement will be activated, and it is necessary to judge the weight per meter, center thickness, and edge thickness.

[0074] The fabrication steps for the airtight layer and the transition layer are as follows:

[0075] S1-1, the airtight layer calender roll presses the tire airtight layer. After pressing, it is conveyed to the airtight layer thickness measuring device. The corresponding laser sensor measures whether the edge thickness is symmetrical. If it is symmetrical, the thickness difference between the airtight layer drive side thickness 11 and the airtight layer operation side thickness 13 is judged again to see if it is within the set airtight layer symmetry difference amplitude threshold. If the airtight layer symmetry difference amplitude is ≤ 1 threshold, the airtight layer pressing process continues.

[0076] S1-2, if 1 threshold < airtight layer symmetry difference amplitude ≤ 2 thresholds, and the processing duration is greater than the first warning length of the airtight layer, an alarm is triggered, and the airtight layer calendering roll on the unqualified side is adjusted according to the airtight layer symmetry difference amplitude setting standard in this step.

[0077] S1-3, if the two thresholds are less than the symmetrical difference of the airtight layer and the processing duration is greater than the second warning length of the airtight layer, an alarm is triggered, and the airtight layer calendering roll on the non-conforming side is adjusted according to the standard set for the symmetrical difference of the airtight layer in this step.

[0078] S1-4: While detecting the symmetrical difference in the airtight layer, the thickness of the airtight layer is measured using a laser sensor, and the weight per meter of the airtight layer is detected using an airtight layer meter scale and an airtight layer encoder.

[0079] S1-5, If the weight per meter of the airtight layer is less than the tolerance 1, adjust the thickness of the airtight layer according to the tolerance 1 to ensure that the weight per meter of the airtight layer is within the processing standard value;

[0080] S1-6 If tolerance 1 < airtight layer weight per meter ≤ tolerance 2, and does not exceed the first warning length of the airtight layer, an alarm will be triggered for the processing of the airtight layer thickness without stopping the machine, and adjustments will be made according to tolerance 1 to ensure that the airtight layer weight per meter is within the processing standard value.

[0081] S1-7, if tolerance 2 < weight per meter of airtight layer and exceeds the first warning length of airtight layer, an alarm will be triggered and the machine will be shut down.

[0082] The transition layer and the airtight layer need to be kept synchronized in real time. The travel of both is recorded by the airtight layer encoder and the transition layer encoder, while maintaining the alignment of the processing data. The data alignment is achieved by correcting and adjusting the parameters according to the production methods S1-1 to S1-7.

[0083] S1-8, the transition layer calender rolls press the tire transition layer. After pressing, the transition layer is conveyed to the transition layer thickness measuring device. Several laser sensors measure whether the edge thickness is symmetrical. If it is symmetrical, the thickness difference between the driving side thickness and the operating side thickness of the transition layer is judged again to see if it is within the set threshold of the symmetrical difference of the transition layer. If the symmetrical difference of the transition layer is ≤ 1 threshold, the transition layer pressing process continues.

[0084] S1-9, if 1 threshold < transition layer symmetry difference amplitude ≤ 2 thresholds, and the processing duration is greater than the first warning length of the transition layer, an alarm is triggered, and the airtight layer calendering roll on the unqualified side is adjusted according to the standard set for the airtight layer symmetry difference amplitude in this step.

[0085] S1-10, if two thresholds are less than the symmetrical difference amplitude of the transition layer and the processing duration is greater than the second warning length of the transition layer, an alarm is triggered, and the airtight layer calendering roll on the non-conforming side is adjusted according to the standard set for the symmetrical difference amplitude of the airtight layer in this step.

[0086] S1-11, while detecting the amplitude of the symmetry difference in the transition layer, measures the thickness of the transition layer using a laser sensor, and detects the weight per meter of the transition layer using a transition layer meter scale and a transition layer encoder.

[0087] S1-12, If the weight per meter of the transition layer is less than the tolerance 1, adjust the thickness of the transition layer according to the tolerance 1 to ensure that the weight per meter of the transition layer is within the processing standard value;

[0088] S1-13, if tolerance 1 < transition layer weight per meter ≤ tolerance 2, and the first warning length of the transition layer is not exceeded, an alarm is triggered for the processing of the transition layer thickness, the machine is not stopped, and adjustments are made according to tolerance 1 to ensure that the transition layer weight per meter is within the processing standard value;

[0089] S1-14 If the tolerance 2 < the weight per meter of the transition layer and exceeds the first warning length of the transition layer, an alarm will be triggered and the machine will be shut down.

[0090] By dynamically monitoring the symmetry of the edge thickness through the above steps, compared to traditional methods that only measure the thickness at a single point, this technology uses a laser sensor array to scan the edge thickness symmetry and can capture the following key information in real time:

[0091] Drive side / operation side thickness difference: The difference is detected with an accuracy of 0.1mm to avoid dynamic imbalance caused by uneven stiffness on both sides of the tire (such as abnormal vibration at high speed).

[0092] If the symmetry deviation exceeds the threshold, the system will automatically trigger the adjustment of the roller gap on the drive side and the operating side. The left and right asymmetry affects the uniformity of the tires, thereby affecting driving comfort.

[0093] Consideration of coordinated control of medium thickness and weight per meter (overcoming the limitations of a single parameter)

[0094] The thickness of the airtight layer in the middle is detected by a laser sensor to ensure the uniformity of the overall structure.

[0095] By linking the meter scale with the encoder, the quality of each unit length can be monitored.

[0096] Dual-layer real-time synchronous control (improves the accuracy of composite structures)

[0097] Alignment of the airtight layer and transition layer encoders. By analyzing the alignment data and comparing the detection data of the airtight layer and transition layer with the detection data before curling, we can predict: 1) whether the given parameter standards for the first production are accurate; 2) whether there are any abnormalities in the normal production specifications.

[0098] Preferably, the thickness of the transition layer and the airtight layer is judged to be symmetrical. If the difference between the thickness on the drive side and the thickness on the operating side is within 0.1mm, no adjustment is made. If the thickness is within the range of 0.1mm to 0.2mm and the continuous length exceeds the first warning length of the airtight layer, a yellow light is activated, and the corresponding position of the roller distance on the drive side or the operating side is adjusted. If the thickness exceeds 0.2mm and the continuous length exceeds the second warning length of the airtight layer, a warning is issued (yellow light), and the corresponding position of the roller distance on the drive side or the operating side is adjusted. A threshold is set to 0.1mm or 0.09mm; the first warning length of the airtight layer is set to 4m, 5m, 6m, or 7m; and the second warning length of the airtight layer is set to 1m, 2m, or 3m.

[0099] If the threshold is set below 0.1mm (such as 0.04mm, 0.05mm, 0.06mm, etc.), the frequent fine-tuning of the tire forming equipment will lead to a decrease in production efficiency; while if it is set above 0.1mm, quality risks will accumulate. Therefore, 0.1mm is the optimal balance point between process capability and efficiency.

[0100] Determine if the weight per meter and thickness of the pre-composite transition layer and airtight layer are within tolerance ranges. If they are within standard ranges, no adjustment is needed. If:

[0101] The weight and thickness of 1 meter are both within the lower / upper limit of the standard, and the overall adjustment should be made upward or downward to correct the situation.

[0102] The weight of 2 meters is within tolerance 1 (tolerance 1 is between 50g and 100g). The thickness is adjusted according to tolerance 1 to ensure that the weight per meter is within the standard range.

[0103] 3. If the weight per meter is less than the alarm tolerance (tolerance 2), adjust the thickness according to the alarm tolerance to ensure that the weight per meter is within the range of tolerance 1; tolerance 2 is greater than 100g.

[0104] If the weight and thickness of a 4-meter device exceed the alarm tolerance (tolerance 2), and the length is less than 5 meters, an alarm will be triggered and an alarm message will be pushed. If the duration is greater than or equal to 5 meters, the alarm will be triggered and the device will shut down.

[0105] After the airtight layer and the transition layer are combined at composite position 109,

[0106] Determine if the combined weight per meter and thickness (only the thickness) are within tolerance range; if they are, no adjustment is needed. If:

[0107] The weight per meter and thickness are both within the lower / upper limits of the standard (tolerance 1 after lamination). Based on the production data aligned before lamination, it is determined whether the weight per meter and thickness of the transition layer and airtight layer before lamination are within the lower / upper limits of the standard. Real-time corrections are made by comparing with the data currently in production. The tolerance 1 after lamination is between 100g and 200g. The tolerance 2 after lamination is above 200g.

[0108] 2 (Post-composite tolerance 1) < weight per meter, thickness < post-composite alarm tolerance, determine whether the weight per meter and thickness of the transition layer and airtight layer before composite are within the lower / upper limit of the standard, and make real-time corrections by comparing with the data in production;

[0109] 3. If both the airtight layer and the transition layer deviate in the same direction from the final composite weight per meter, prioritize ensuring the airtight layer's weight per meter before adjusting the transition layer's weight per meter. If both the airtight layer and the transition layer deviate in opposite directions from the final composite weight per meter, similarly follow the pre-composite adjustment logic, prioritizing the airtight layer's weight per meter before adjusting the transition layer's weight per meter. If the adjustment reaches its limit and still fails to meet the requirements, and the length is less than the first warning length after composite, an alarm is triggered and an alarm message is pushed. If the duration is greater than or equal to the first warning length after composite, an alarm is triggered and the system is shut down. The preferred first warning length after composite is 5m, 6m, or 7m.

[0110] If the weight and thickness of the 4-meter-long composite material exceed the alarm tolerance, and the length is less than 5 meters, an alarm will be triggered and an alarm message will be pushed. If the continuous length is greater than or equal to 5 meters, the alarm will be triggered and the machine will shut down.

[0111] The beneficial effects of this invention are as follows:

[0112] It can ensure the left-right symmetry of the products extruded from the inner lining layer, and solve the problems of measurement errors by employees and left-right asymmetry caused by unidirectional adjustment;

[0113] The front and rear data are aligned and fed back, and production dimensions are adjusted in real time, which solves the problem of blind adjustment by employees and eliminates the problem of lag in employee measurement and adjustment;

[0114] Using meter weight as the core, ensure that the weight and thickness of the tire remain stable and controllable when there are fluctuations in the porosity of the rubber compound;

[0115] By focusing on airtight layer control, we can ensure the airtightness quality of tubeless tires and eliminate the instability of the airtight layer adjustment caused by the composite weight of the tires.

[0116] The adjustment is based on the relationship between the movement position X of the calender roller gap sensor and the thickness Y of the extruded material: Y = Ax; A is the roller gap adjustment coefficient, which is obtained based on multiple actual calibrations of the equipment.

[0117] like Figures 1-15 As shown, it includes a controller and a control device mechanism;

[0118] The controller is equipped with a control system. The controller is used to control the control equipment mechanism to detect the airtight layer and transition layer on the tire liner. The controller is also used to control the control equipment mechanism to detect the composite tire liner.

[0119] like Figure 1 As shown, the control equipment includes an airtight layer calendering roll 1 and a transition layer calendering roll 2; an airtight layer thickness measuring device 3 and a transition layer thickness measuring device 4; an airtight layer meter scale 5 and a transition layer meter scale 6; an airtight layer encoder 7 and a transition layer encoder 8; a composite device 9 at the composite position where the airtight layer and the transition layer are composited; a pre-coiling encoder 10; a post-composite meter scale 11; a post-composite thickness measuring device 12; a composite inner liner curling mechanism 13; and a cutting and recycling mechanism 14 for cutting and recycling tire inner liners that do not meet the standard threshold.

[0120] like Figure 1 As shown, the airtight layer calendering roll 1 is used to extrude and form the airtight layer on the tire liner, and has a thickness; the transition layer calendering roll 2 is used to extrude and form the transition layer on the tire liner, and has a thickness; the wheel

[0121] The inner liner airtight layer and the transition layer are each provided with two side detection parts 100 located on both sides and a middle detection part 111 located in the middle;

[0122] The thickness detection end of the airtight layer thickness measuring device 3 receives the tire inner liner airtight layer output from the output end of the airtight layer calendering roller 1, and measures the thickness on the two side detection parts 100 and the middle detection part 111 of the tire inner liner airtight layer to form dimensional data; the thickness detection end of the transition layer thickness measuring device 4 receives the tire inner liner transition layer output from the output end of the transition layer calendering roller 2, and measures the thickness on the two side detection parts 100 and the middle detection part 111 of the tire inner liner transition layer to form thickness dimensional data; the input end of the controller receives the thickness dimensional data of the tire inner liner airtight layer and the transition layer respectively, compares them with the preset threshold standard, and stores the data information;

[0123] like Figure 1 As shown, the airtight layer scale 5 and the transition layer scale 6 are used to weigh and detect the weight of the airtight layer and the transition layer of the tire liner, respectively, and generate corresponding airtight layer weight data and transition layer weight data. The measuring ends of the airtight layer encoder 7 and the transition layer encoder 8 receive the tire liner airtight layer and tire liner transition layer output from the airtight layer scale 5 and the transition layer scale 6, respectively. The lengths of the tire liner airtight layer and the tire liner transition layer are detected by the airtight layer encoder 7 and the transition layer encoder 8, and corresponding length dimension data are generated.

[0124] like Figure 1As shown, the controller receives the weight and length data of the airtight layer and the transition layer, compares them with the preset threshold standards, and combines them with the pre-measured thickness data of the tire liner airtight layer and the transition layer for information processing. When the controller determines that the tire liner airtight layer or the tire liner transition layer does not meet the threshold standards, it will adjust the roller gap data of the airtight layer calendering roller 1 or the transition layer calendering roller 2 to adjust the data of the tire liner airtight layer or the transition layer after extrusion molding. When the controller determines that the tire liner airtight layer or the tire liner transition layer meets the threshold standards, it will perform a composite operation on the tire liner airtight layer or the tire liner transition layer.

[0125] Finally, the inner lining layer is wound up;

[0126] In the above control structure, a precise feedback control is implemented for the data alignment method before and after lamination. Before lamination, three sets of laser thickness gauges are used to detect the middle thickness and side thickness of the airtight layer and the transition layer in real time. Combined with the weight data per meter, the system determines whether to make adjustments based on the weight per meter, thickness standards and tolerances of the airtight layer and the transition layer through a given adjustment logic.

[0127] After the airtight layer and transition layer are combined, the length data is calculated using an encoder and then aligned with the weight per meter and thickness data before the airtight layer and transition layer are combined for judgment. If the weight per meter and thickness are both qualified before and after the combination, no adjustment is made. If the weight per meter or thickness exceeds the tolerance after the combination, it is necessary to return to judge whether the synchronous data is unqualified for the transition layer or the airtight layer. If there is obvious unqualified airtight layer or transition layer, it is corrected according to the tolerance.

[0128] If there are no obvious defects in the pre-composite airtight layer and transition layer, adjust the transition layer according to the given direction to ensure the thickness of the airtight layer per meter. The edge thickness adjustment logic is to compare the edge thickness of the drive side and the operating side with the standard, and to compare the symmetry of the edge thickness of the drive side and the operating side. If the tolerance is exceeded, the cross of the calendering roller shaft needs to be adjusted.

[0129] The programmable controller module transmits the weight and thickness data of the airtight layer and transition layer to the controller. The controller then transmits the information to the control software in the industrial computer. The control software monitors the middle and edge thickness values ​​of the airtight layer and transition layer in real time to determine whether they exceed the set standard range. If the weight and thickness values ​​of the airtight layer and transition layer do not exceed the set standard range, it determines that no adjustment of the calender roll pitch will be made. If the weight and thickness values ​​of the airtight layer or transition layer exceed the set standard range, a command is sent to the controller to adjust the calender roll pitch and thickness according to the priority logic of weight and thickness.

[0130] After the calender roll gap and thickness are adjusted, the control software continues to judge whether the weight per meter and thickness measurement values ​​exceed the standard until the weight per meter and thickness detection values ​​are within the standard range. This can improve the dimensional stability of the inner lining layer, especially the dimensional stability of the airtight layer, which in turn improves the symmetry of the inner lining layer thickness.

[0131] Specifically, such as Figures 5-15 As shown, the cutting and recycling mechanism 14 is used to cut and recycle tire inner liner layers that do not meet the standard threshold during the measurement stage. The cutting and recycling mechanism 14 includes a first conveyor belt 15, a second conveyor belt 16, a cutting assembly 18, and a recycling assembly 19. The cutting assembly 18 is located above the first conveyor belt 15 and is used to cut the tire inner liner layers conveyed on the first conveyor belt 15. The recycling assembly 19 is located between the first conveyor belt 15 and the second conveyor belt 16 and is used to collect and recycle the tire inner liner layers cut by the cutting assembly 18.

[0132] Furthermore, such as Figures 4-6 As shown, the cutting assembly 18 includes a track rod 17, an adjusting base 20, a laser cutting head 21, a telescopic rod 22, a synchronous drive wheel 23, and a rotating motor 24. The track rod 17 is inclinedly positioned above the conveyor belt 15, and track grooves 25 are provided on both sides of the track rod 17. The adjusting base 20 is slidably connected to one of the track grooves 25. The telescopic rod 22 is installed on the adjusting base 20, and a vertical track 210 is provided on the adjusting base 20. The laser cutting head 21 is slidably connected to the vertical track 210, and the output end of the laser cutting head 21 faces the surface of the conveyor belt 15. The movable end of the telescopic rod 22 is connected to the laser cutting head 21.

[0133] Two synchronous pulleys 23 are rotatably connected to both ends of the track rod 17. A synchronous belt 26 is fitted on both synchronous pulleys 23. The two track grooves 25 are connected to each other. A driving block 27 is slidably connected in another track groove 25. The driving block 27 is connected to the synchronous belt 26. A rotating motor 24 is installed on the track rod 17. The output end of the rotating motor 24 is connected to one of the synchronous pulleys 23.

[0134] Furthermore, such as Figures 7-11The recycling assembly 19 shown includes a rotating roller 28, an auxiliary roller 1 29, an auxiliary roller 2 30, a guide channel 31, and a storage box 32. The rotating roller 28 has a hollow structure and a negative pressure pipe 33 is provided inside the rotating roller 28. The negative pressure pipe 33 is connected to the central axis of the rotating roller 28 by a support rod. Several negative pressure plates 34 with slots are provided on the outer side wall of the rotating roller 28 around the central axis. The negative pressure plates 34 have a hollow structure and are connected to the negative pressure pipe 33 by a vent pipe 1 35. The negative pressure pipe 33 has an exhaust pipe 36 inside. A negative pressure pump 37 is provided on one end of the rotating roller 28. One end of the exhaust pipe 36 extends through the rotating roller 28 to the outside and is sealed and rotatably connected to the output end of the negative pressure pump 37.

[0135] Auxiliary roller 29 and auxiliary roller 30 are both located on one side of rotating roller 28. There is a distance between auxiliary roller 29 and auxiliary roller 30 and the outer surface of rotating roller 28. An arc-shaped dividing plate 38 is provided at the bottom of rotating roller 28. The dividing plate 38 is sleeved on the outside of rotating roller 28 and is used to block the negative pressure plate 34 from communicating with the outside. The guide channel 31 is located below the dividing plate 38. The storage box 32 is located on the output end of the guide channel 31.

[0136] Both auxiliary roller 29 and auxiliary roller 30 are connected to drive synchronous pulleys 39 at their ends. Drive synchronous belts 40 are fitted on the two drive synchronous pulleys 39. One of the drive synchronous pulleys 39 is equipped with a drive motor 49 for rotating the drive synchronous pulley 39.

[0137] Furthermore, such as Figures 7-11 As shown, the recycling assembly 19 includes a first conveyor roller 41 and a second conveyor roller 42 disposed on the side of the rotating roller 28 away from the first conveyor belt 15, with a distance between the first conveyor roller 41 and the second conveyor roller 42. A third conveyor roller 43 is disposed on the other side of the rotating roller 28. Sliding frames 44 for mounting the first conveyor roller 41 are provided on both sides of the first conveyor roller 41. A sliding groove 45 is provided inside the sliding frame 44, and a sliding base 46 is slidably connected inside the sliding groove 45. The end of the first conveyor roller 41 is connected to the sliding base 46. A second telescopic rod 47 is provided at the bottom of the sliding frame 44, and the movable end of the second telescopic rod 47 is connected to the sliding base 46. The first conveyor roller 41... One end is equipped with a servo motor 48 for driving the conveyor roller 41 to rotate. By setting the cutting and recycling mechanism 14, the tire inner liner that does not meet the measurement standard can be cut off. After the tire inner liner is cut off, it will be transferred to the bottom of the conveyor line under the negative pressure function of the rotating roller 28 and stored in the storage box 32. In the process, it is convenient to automatically remove the tire inner liner that does not meet the standard on the conveyor line. When the rotating roller 28 recycles the tire inner liner, the conveyor roller 41 can be moved horizontally by the telescopic rod 47, thereby avoiding the collision of the tire inner liner on the rotating roller 28.

[0138] By setting up a cutting and recycling mechanism, tire inner linings that do not meet the measurement standards can be cut off. After cutting, the tire inner lining will be transferred to the bottom of the conveyor line by the negative pressure function of the rotating roller and stored in the storage box. In this process, it is convenient to automatically remove tire inner linings that do not meet the standards on the conveyor line, avoid manual operation, and improve the operating efficiency of the equipment.

[0139] This invention uses a controller to regulate and process data from the control equipment mechanism. It primarily uses weight per meter as the control core, with coordinated control of the middle and edge thicknesses. This achieves automatic feedback control to ensure stable and controllable weight per meter of the tire inner liner airtight layer. It aligns the data before and after the tire inner liner is laminated and uses the result before curling as a guide to achieve precise adjustment, avoiding the uncontrollability of manual adjustment control. Real-time thickness measurement is performed on both the operating and driving sides to improve the left-right symmetry of the material.

[0140] Although embodiments of the invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. An automatic feedback control system for tire inner liner extrusion, characterized in that, include: Airtight layer processing components, transition layer processing components, composite components, and inner liner processing and collection components; The airtight layer processing component produces the tire airtight layer, and the transition layer processing component produces the tire transition layer. The airtight layer and the transition layer are produced simultaneously. The airtight layer processing component and the transition layer processing component respectively obtain the thickness and weight per meter of the airtight layer and the transition layer. The airtight layer and the transition layer are tightly pressed together by the composite component to form the tire inner liner. The processing data of the inner liner is obtained in real time during the pressing process. Tire inner liners that meet the processing conditions are collected by the inner liner processing collection component. The control system includes the following steps: S1, Simultaneously process and manufacture the tire airtight layer and transition layer. During the processing and manufacturing process, measure the thickness, weight per meter and processing length. If the composite conditions are met, proceed to S2. S1-1, the airtight layer calender roll presses the tire airtight layer. After pressing, it is conveyed to the airtight layer thickness measuring device. Several laser sensors measure whether the edge thickness is symmetrical. If it is symmetrical, the thickness difference between the airtight layer drive side thickness and the airtight layer operation side thickness is judged again to see if it is within the set airtight layer symmetry difference amplitude threshold. If the airtight layer symmetry difference amplitude is ≤ 1 threshold, the airtight layer pressing process continues. S1-2, if 1 threshold < airtight layer symmetry difference amplitude ≤ 2 thresholds, and the processing duration is greater than the first warning length of the airtight layer, an alarm is triggered, and the roller spacing at the corresponding position of the airtight layer calendering roller is adjusted. S1-3, if the two thresholds are less than the symmetrical difference of the airtight layer and the processing duration is greater than the second warning length of the airtight layer, an alarm is triggered and the roller spacing at the corresponding position of the airtight layer calendering roller is adjusted. S1-4: While detecting the symmetrical difference in the airtight layer, the thickness of the airtight layer is measured using a laser sensor, and the weight per meter of the airtight layer is detected using an airtight layer meter scale and an airtight layer encoder. S1-5, If the weight per meter of the airtight layer is less than the tolerance 1, adjust the thickness of the airtight layer according to the tolerance 1 to ensure that the weight per meter of the airtight layer is within the processing standard value; S1-6 If tolerance 1 < airtight layer weight per meter ≤ tolerance 2, and does not exceed the first warning length of the airtight layer, an alarm will be triggered for the processing of the airtight layer thickness without stopping the machine, and adjustments will be made according to tolerance 1 to ensure that the airtight layer weight per meter is within the processing standard value. S1-7, if tolerance 2 < weight per meter of airtight layer and exceeds the first warning length of airtight layer, an alarm will be triggered and the machine will be shut down. S2, the tire airtight layer and transition layer that meet the composite conditions are composited to form the tire inner liner; S3. After the composite tire inner liner is processed, the length is measured, and then the thickness and weight per meter are determined. The inner liner that meets the production requirements is rolled up and collected.

2. The automatic feedback control system for tire inner liner extrusion according to claim 1, characterized in that, The airtight layer processing assembly includes: The airtight layer is pressed by the airtight layer calendering roller and then conveyed to the airtight layer thickness measuring equipment. The airtight layer thickness measuring equipment uses a laser thickness sensor to detect the two sides and the middle part of the pressed airtight layer. The airtight layer with the thickness measured is then transferred to the airtight layer meter scale for weighing. The weighed airtight layer is then transferred to the airtight layer encoder. The airtight layer scale (5) and the transition layer scale (6) are used to weigh and detect the weight of the airtight layer and the transition layer of the tire liner, respectively, and generate corresponding airtight layer weight data and transition layer weight data. The measuring ends of the airtight layer encoder (7) and the transition layer encoder (8) receive the tire liner airtight layer and tire liner transition layer output from the airtight layer scale (5) and the transition layer scale (6), respectively. The length of the tire liner airtight layer and the tire liner transition layer is detected by the airtight layer encoder (7) and the transition layer encoder (8), and corresponding length dimension data is generated.

3. The automatic feedback control system for tire inner liner extrusion according to claim 2, characterized in that, The transition layer processing assembly includes: The transition layer calendering roll presses the tire transition layer and conveys the tire transition layer to the transition layer thickness measuring device (104). The transition layer thickness measuring device uses a laser thickness sensor to detect the two sides and the middle part of the tire transition layer being pressed. The tire transition layer with the thickness measured is then conveyed to the transition layer meter scale. The transition layer meter scale is used to weigh the tire transition layer. The weighed tire transition layer is then conveyed to the transition layer encoder to measure the transport length. The tire liner airtight layer and tire liner transition layer output by the airtight layer encoder (7) and the transition layer encoder (8) are transported to the input end of the composite equipment (9). The composite equipment (9) can extrude and composite the tire liner airtight layer and tire liner transition layer to form a shaped tire liner.

4. The automatic feedback control system for tire inner liner extrusion according to claim 1, characterized in that, The composite component includes: The completed tire airtight layer and tire transition layer are transported to the lamination position for pressing and lamination. After lamination, the inner liner is formed. The tire inner liner is then transported to the post-lamination encoder to measure the transport length. After the length measurement is completed, it is transported to the post-lamination meter scale. The weighed tire inner liner is then transported to the post-lamination thickness measuring device. After the thickness measurement is completed, the tire inner liner is collected using the post-lamination inner liner curling device.

5. The automatic feedback control system for tire inner liner extrusion according to claim 1, characterized in that, S1 further includes: S1-8, the transition layer calender rolls press the tire transition layer. After pressing, the transition layer is conveyed to the transition layer thickness measuring device. Several laser sensors measure whether the edge thickness is symmetrical. If it is symmetrical, the thickness difference between the driving side thickness and the operating side thickness of the transition layer is judged again to see if it is within the set threshold of the symmetrical difference of the transition layer. If the symmetrical difference of the transition layer is ≤ 1 threshold, the transition layer pressing process continues. S1-9, if 1 threshold < transition layer symmetry difference amplitude ≤ 2 thresholds, and the processing duration is greater than the first warning length of the transition layer, an alarm is triggered, and the roller spacing at the corresponding position of the transition layer calendering roll is adjusted. S1-10, if the two thresholds are less than the symmetrical difference amplitude of the transition layer and the processing duration is greater than the second warning length of the transition layer, an alarm is triggered and the roller spacing at the corresponding position of the transition layer calendering roll is adjusted. S1-11, while detecting the amplitude of the symmetrical difference in the transition layer, the thickness of the transition layer is measured by a laser sensor, and the weight per meter of the transition layer is detected by a transition layer meter scale and a transition layer encoder; S1-12, If the weight per meter of the transition layer is less than the tolerance 1, adjust the thickness of the transition layer according to the tolerance 1 to ensure that the weight per meter of the transition layer is within the processing standard value; S1-13, if tolerance 1 < transition layer weight per meter ≤ tolerance 2, and the first warning length of the transition layer is not exceeded, an alarm is triggered for the processing of the transition layer thickness, the machine is not stopped, and adjustments are made according to tolerance 1 to ensure that the transition layer weight per meter is within the processing standard value; S1-14 If the tolerance 2 < the weight per meter of the transition layer and exceeds the first warning length of the transition layer, an alarm will be triggered and the machine will be shut down.

6. The automatic feedback control system for tire inner liner extrusion according to claim 1, characterized in that, S3 includes: S3-1, after the inner lining is formed at the composite position, the pressed inner lining is conveyed to the inner lining encoder. First, the inner lining travel distance is measured. After the distance is measured, a laser sensor is used to measure whether the thickness of the inner lining meets the processing standard. If the thickness of the inner lining meets the processing standard, the difference in the weight per meter of the inner lining is judged.

7. The automatic feedback control system for tire inner liner extrusion according to claim 6, characterized in that, S3 includes: S3-2, if the weight per meter of the inner lining and the thickness of the inner lining are less than the tolerance after composite by 1, obtain the weight per meter and thickness data of the transition layer and the airtight layer before composite. If the data before composite is not abnormal, proceed to the next step. If the data before composite is abnormal, return to execute the corresponding transition layer and airtight layer execution steps.

8. The automatic feedback control system for tire inner liner extrusion according to claim 7, characterized in that, S3 includes: S3-3, if the post-composite tolerance 1 < the weight per meter of the inner lining and the thickness of the inner lining < the post-composite tolerance 2, determine the weight per meter and thickness of the airtight layer and the transition layer before composite, and make real-time corrections to the processing steps of the airtight layer and the transition layer that are being produced.

9. The automatic feedback control system for tire inner liner extrusion according to claim 8, characterized in that, S3 includes: S3-4, if the weight per meter after composite exceeds the tolerance 2 after composite, determine whether the composite data of the airtight layer and the transition layer before composite also exceed the corresponding preset threshold. If it exceeds the threshold, first ensure the weight per meter of the airtight layer, and then adjust the weight per meter of the transition layer. S3-5, if the weight per meter after lamination exceeds the tolerance 2 after lamination, determine whether the lamination data of the airtight layer and the transition layer before lamination also exceed the corresponding preset threshold. If they do not exceed the threshold, first determine whether the length is less than the first warning length after lamination, ensure the weight per meter of the airtight layer first, then adjust the weight per meter of the transition layer, and perform real-time processing adjustments without stopping the machine; if the continuous length is greater than or equal to the first warning length after lamination, then alarm and stop the machine.

10. The automatic feedback control system for tire inner liner extrusion according to claim 1, characterized in that, The following steps need to be performed before any other steps can begin: After the machine is started and the pressing line is activated, the screw speed, calendering roll gap, and speed are directly matched to the currently downloaded formula value. If the automatic feedback system is not in operation, the operator needs to make manual adjustments. If the automatic feedback system for weight per meter and thickness measurement is in operation, it will not provide feedback on weight per meter and thickness measurement within 30 seconds after the machine is started, but it cannot be manually adjusted either. After 30 seconds, the feedback on weight per meter and thickness measurement will be activated, and it is necessary to judge the weight per meter, middle thickness, and edge thickness.

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