Tire tread and sidewall part modular extrusion method

Abstract

The invention provides a tire tread and sidewall part modular extrusion method, and relates to the technical field of tire manufacturing, the method comprises the following steps: S1, preparing materials: preparing a tread rubber material and a sidewall rubber material; s2, preheating and debugging equipment, preheating a rubber mixing machine and an extruder to a set temperature, and adjusting a preset thickness and a rubber supply temperature of a produced rubber sheet; s3, carrying out modular extrusion setting, and designing a tread and a sidewall part into a modular structure according to the tire design; s4, the prepared rubber material is fed into an extruder, and all modules of the tread and the tire side part are pressed out through a modular mold; s5, carrying out quality inspection on the pressed tread and sidewall part module; and S6, module assembling and tire forming work is carried out, the tire tread and tire side part modules which are checked to be qualified are assembled according to design requirements, and a complete tire structure is formed. According to the method, through modular design, the tire extrusion precision and efficiency are improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tire manufacturing, and in particular to a modular extrusion method for a tire tread and sidewall component. Background Art

[0002] In the tire production process, the extrusion of the tread and sidewall components is one of the key links. In the traditional process, the die shape of the tread and sidewall is controlled by the pre-die flow channel to control the position of the rubber, and then a die plate of a specified size is used to standardize the size of the extruded semi-components.

[0003] The existing tire tread and sidewall die shapes rely on pre-die flow channels to control the position of the rubber. After the pre-die, a die plate of a specified size is used to regulate the size of the extruded semi-component; the tread and sidewall die plates need to be designed in different sizes according to different tire specifications, tread groove depth, pattern saturation and other parameters.

[0004] The disadvantages are obvious. One is that many die plates need to be prepared; the other is that it is very cumbersome to replace the die plates during the production process, including the preheating of the die plates and the fluctuation of the size. However, due to the differences in various parameters such as tire specifications, groove depth, and pattern saturation, it is necessary to design die plates of different sizes. This not only increases the number of die plates, but also makes the replacement of die plates in the production process cumbersome, including the preheating of the die plates, the adjustment of the size, etc., which is not only time-consuming and labor-intensive, but also easily leads to waste of rubber and abnormal appearance of parts due to the fluctuation of the size during the replacement process; before the design size is satisfied, a lot of rubber waste and manual labor are required for die shape research. Summary of the invention

[0005] The present invention provides a modular extrusion method for a tire tread and sidewall component, which is used to solve at least one of the technical problems raised by the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides a modular extrusion method for a tire tread and sidewall component, comprising: Step S1: Prepare materials, including tread rubber and sidewall rubber, including sidewall rubber, groin rubber, cushion rubber and filling rubber, and ensure that the rubber is heat-refined uniformly without foreign matter, self-vulcanized rubber and oil stain; Step S2: preheating and debugging the equipment, preheating the rubber mixer and extruder to the set temperature, and adjusting the preset thickness and rubber supply temperature of the produced film; Step S3: performing modular extrusion setting, designing the tread and sidewall components into a modular structure according to the tire design, and setting corresponding molds on the extruder to ensure that each module can be accurately extruded; Step S4: feeding the prepared rubber material into an extruder, and extruding each module of the tread and sidewall components through a modular mold, while controlling the wind pressure, cooling water pressure, cooling water temperature and steam pressure of the extruder head to remain constant; Step S5: Perform quality inspection on the extruded tread and sidewall component modules to ensure that there are no scratches, damage, self-vulcanized rubber and pore defects on the surface, and that the size and weight of each part meet the design requirements; Step S6: Perform module assembly and tire molding work, assemble the qualified tread and sidewall component modules according to the design requirements to form a complete tire structure, and perform subsequent vulcanization and testing processes.

[0007] Preferably, the sidewall rubber material in step S1 further includes filling rubber, and the filling rubber is filled between the contact parts of the sidewall rubber, the grommet rubber and the buffer rubber, and the modulus of the filling rubber is between the moduli of the sidewall rubber and the grommet rubber.

[0008] Preferably, in step S2, the temperature of the rubber mixer roller is set to 55+5°C, the film thickness is adjusted to 6-8 mm, the capacity is 55 kg, and the rubber supply temperature is 85+5°C; the extruder head temperature is not higher than 95°C, and the body temperature is 40+5°C; at the same time, the sample is preheated to 85-95°C, and the temperature of the sample is ensured to be lower than 110°C during use.

[0009] Preferably, the modular structure in step S3 includes: a fixed base, a module installation area on the top of the fixed base, the bottom of the module installation area is fixedly connected to the horizontal partition, a plurality of module panels are arranged in the left and right directions in the module installation area, and the bottom of the module installation area is fixedly connected to the horizontal partition.

[0010] Preferably, a hydraulic lifting mechanism is provided under the partition, and the hydraulic lifting mechanism comprises: a hydraulic cylinder body, a plurality of hydraulic cylinder bodies are fixedly connected inside the fixed base along the left and right directions, a plurality of hydraulic rods are connected inside each hydraulic cylinder body for sliding up and down, the hydraulic rods slide upward and penetrate the partition, the top end of the hydraulic rods is fixedly connected to the bottom end of the module plate, the bottom of the hydraulic cylinder body is fixedly connected to a vertical pipe, an electromagnetic valve 1 is fixedly installed on the vertical pipe, each solenoid valve 1 is electrically connected to the controller, the bottom of the vertical pipe is fixedly connected to a main pipe, the left end of the main pipe is fixedly connected to a hydraulic pump, and an electromagnetic valve 2 is fixedly installed between the main pipe and the hydraulic pump.

[0011] Preferably, an auxiliary module lifting mechanism is also provided in the fixed base, including: a screw mounting seat, a screw mounting seat in the left and right directions is fixedly installed at the bottom of the left and right side walls of the fixed base, a precision screw 1 is actively connected in the screw mounting seat, the precision screw 1 is threadedly connected to the sliding seat, the sliding seat is slidably connected to the screw mounting seat left and right, the left end of the screw 1 is fixedly connected to the output shaft of a servo motor, a vertical tightening cylinder is fixedly installed on the top of the sliding seat, the tightening cylinder is connected to the air pump source, the top push rod end of the tightening cylinder is rotatably connected to the rotating roller along the front and rear direction, and a downward distance sensor 1 is fixedly installed on one side of the push rod of the tightening cylinder.

[0012] Preferably, the module clamping mechanism comprises: a clamping electric cylinder, a pair of clamping electric cylinders along the front-to-back direction are fixedly installed on the left and right outer walls of the fixed base, the front movable ends of the clamping electric cylinders on the left and right sides are fixedly connected to a cross bar 1 in the left and right directions, the rear end of the cross bar 1 is fixedly connected to the clamping plate, the rear end of the clamping plate is fixedly connected to the rubber layer, and a distance sensor 2 is fixedly installed on the left rear end of the cross bar 1.

[0013] Preferably, in step S4, the wind pressure of the extruder head is controlled to be 0.4 MPa, the cooling water pressure is above 0.1 MPa, the cooling water temperature is not higher than 25°C, the steam pressure is 0.3 MPa, and the extrusion and debinding temperature is not higher than 120°C.

[0014] Preferably, there are also: Temperature sensor module, used to detect the working temperature of hydraulic pump and hydraulic cylinder; Hydraulic sensor module, used for the internal pressure value of the hydraulic cylinder; Density sensor module, used to detect the density of the oil fluid inside the main pipe; A flow sensor module is used to detect the flow of oil fluid entering and exiting the vertical pipe of the solenoid valve; A flow rate sensor module, used for detecting the flow rate of the oil fluid at the valve port opening of the solenoid valve 1; Alarm, used to alarm in case of abnormal situation; The first calculation module is used to calculate the deviation between the axial hydraulic force of the hydraulic cylinder body under test and the theoretical hydraulic force; A second calculation module, which calculates the evaluation value of the internal volume change of the hydraulic cylinder body under test based on the first calculation module; A control module, used for collecting and processing the data of each sensor, the control module is electrically connected to the first calculation module, the second calculation module, the density sensor module, the flow sensor module, the flow velocity sensor module, the flow velocity sensor module, the temperature sensor module, the air pressure sensor module and the alarm respectively; The comparison and judgment module is used to compare and judge the normal and abnormal conditions of the hydraulic volume change state in the hydraulic cylinder body.

[0015] Preferably, the first calculation module calculates based on the following formula 1: ;in: is the deviation between the axial hydraulic force in the hydraulic cylinder being tested and the theoretical hydraulic force, To detect the end time, To detect the initial moment, The oil fluid inside the main tube detected by the density sensor module; is the flow length of the oil fluid in the valve chamber of the solenoid valve, Detected by flow sensor module The flow rate of solenoid valve 1 at the moment, Solenoid valve for flow sensor module detection The flow rate at is a logarithmic function, The value of the natural constant is 2.72; is the theoretical flow rate of oil fluid passing through the solenoid valve port, is a sine function, It is the angle between the oil flow direction and the valve plane of the solenoid valve, and its value is 65°; The average flow rate of the oil at the valve port opening of the solenoid valve 1 detected by the flow rate sensor module; The second calculation module is calculated based on the following formula 2: ;in: is the estimated value of the volume change of the hydraulic cylinder body under test during the test period. is the temperature inside the hydraulic cylinder at time t, is the temperature value inside the hydraulic cylinder at the initial moment, The maximum operating temperature of the hydraulic pump detected by the temperature sensor. The minimum operating temperature of the hydraulic pump detected by the temperature sensor. is the measured pressure value in the hydraulic cylinder under test, is the maximum working pressure in the hydraulic cylinder being tested, is the minimum working pressure in the hydraulic cylinder being tested, is the ideal pressure value in the hydraulic cylinder under test, The volume of oil to be delivered from the hydraulic cylinder under test; is the maximum volume of oil in the hydraulic cylinder under test, The minimum volume of oil in the hydraulic cylinder under test; The comparison and judgment module performs comparison. When the value is greater than zero, the control module controls the alarm to sound an alarm and mark the position, and promptly stops the hydraulic pump to repair and replace the abnormal hydraulic cylinder. When it is less than or equal to zero, the change of hydraulic volume in the hydraulic cylinder under test is normal and no maintenance is required.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides an extrusion method that can reduce the number of tread and sidewall die plates and the time for changing the die; through a modular approach, the overall outline of the die is standardized, and the same effect of die plates of different sizes is achieved through the combination and adjustment of different modules. And there is no need to replace the die plates during the process, and there will be no abnormalities in the extrusion size and component appearance due to the low temperature of the die plates. The method improves the accuracy and efficiency of tire extrusion and reduces production costs through modular design. At the same time, by strictly controlling the parameters and quality requirements of each step, the quality stability and reliability of the tire are ensured. In addition, the method also simplifies the production process of tires, improves the degree of automation of the production line, provides strong support for the development of the tire manufacturing industry, and reduces manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic flow chart of a modular extrusion method for a tire tread and sidewall component of the present invention; Figure 2 It is a schematic diagram of the assembly design style of the module board and the fixed base of the present invention; Figure 3 It is a schematic diagram of the modular board style of the present invention; Figure 4 It is a schematic diagram of the simulated mouth shape size control of the present invention; Figure 5 It is a front cross-sectional schematic diagram of the modular structure of the present invention; Figure 6 It is a left-side cross-sectional schematic diagram of the modular structure of the present invention; Figure 7 It is a top view schematic diagram of the modular structure of the present invention.

[0019] Reference numerals: 1. Fixed base; 101. Module installation area; 102. Partition; 103. Module board; 2. Hydraulic lifting mechanism; 201. Hydraulic cylinder; 2011. Hydraulic rod; 202. Solenoid valve 1; 203. Vertical pipe; 204. Main pipe; 205. Hydraulic pump; 206. Solenoid valve 2; 3. Auxiliary module lifting mechanism; 301. Screw mounting seat; 311. Precision screw 1; 312. Sliding seat; 313. Servo motor 1; 302. Clamping cylinder; 303. Distance sensor 1; 304. Rotating roller; 4. Module clamping mechanism; 401. Clamping electric cylinder; 402. Crossbar 1; 403. Clamping plate; 404. Rubber layer; 405. Distance sensor 2. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] The present invention provides the following embodiments Example 1 The embodiment of the present invention provides a modular extrusion method for a tire tread and sidewall component, such as Figure 1 As shown, including: Step S1: Prepare materials, including tread rubber and sidewall rubber, including sidewall rubber, groin rubber, cushion rubber and filling rubber, and ensure that the rubber is heat-refined uniformly without foreign matter, self-vulcanized rubber and oil stain; Step S2: preheating and debugging the equipment, preheating the rubber mixer and extruder to the set temperature, and adjusting the preset thickness and rubber supply temperature of the produced film; Step S3: performing modular extrusion setting, designing the tread and sidewall components into a modular structure according to the tire design, and setting corresponding molds on the extruder to ensure that each module can be accurately extruded; Step S4: feeding the prepared rubber material into an extruder, and extruding each module of the tread and sidewall components through a modular mold, while controlling the wind pressure, cooling water pressure, cooling water temperature and steam pressure of the extruder head to remain constant; Step S5: Perform quality inspection on the extruded tread and sidewall component modules to ensure that there are no scratches, damage, self-vulcanized rubber and pore defects on the surface, and that the size and weight of each part meet the design requirements; Step S6: Perform module assembly and tire molding work, assemble the qualified tread and sidewall component modules according to the design requirements to form a complete tire structure, and perform subsequent vulcanization and testing processes.

[0024] The working principle and beneficial effects of the above technical solution are as follows: Working principle: The modular extrusion method for the tread and sidewall components of a tire provided by the embodiment of the present invention first prepares the materials to ensure the quality of the rubber material; then preheats and debugs the equipment to prepare for the extrusion process; then performs modular extrusion setting, designs the tread and sidewall components into a modular structure, and sets corresponding molds on the extruder; then feeds the prepared rubber material into the extruder, extrudes each module through the modular mold, and controls the relevant parameters to remain constant; then performs a quality inspection on the extruded modules to ensure that the quality meets the requirements; finally, performs module assembly and tire molding to form a complete tire structure; Beneficial effects: This method improves the accuracy and efficiency of tire pressing and reduces production costs through modular design. At the same time, by strictly controlling the parameters and quality requirements of each step, the quality stability and reliability of the tire are ensured. In addition, this method also simplifies the tire production process, improves the automation level of the production line, and provides strong support for the development of the tire manufacturing industry.

[0025] Example 2 Based on Example 1, it also includes: the sidewall rubber in step S1 also includes filling rubber, the filling rubber is filled between the contact parts of the sidewall rubber, the flange rubber and the buffer rubber, and the modulus of the filling rubber is between the moduli of the sidewall rubber and the flange rubber.

[0026] In step S2, the temperature of the rubber mixer roller is set to 55+5°C, the film thickness is adjusted to 6-8mm, the capacity is 55kg, and the rubber supply temperature is 85+5°C; the extruder head temperature is not higher than 95°C, and the body temperature is 40+5°C; at the same time, the sample is preheated to 85-95°C, and the temperature of the sample is ensured to be lower than 110°C during use.

[0027] In step S4, the wind pressure of the extruder head is controlled to be 0.4 MPa, the cooling water pressure is above 0.1 MPa, the cooling water temperature is not higher than 25° C., the steam pressure is 0.3 MPa, and the extrusion and debonding temperature is not higher than 120° C.

[0028] The working principle and beneficial effects of the above technical solution are as follows: Working principle: Based on Example 1, this example specifically optimizes the material preparation, equipment preheating and debugging, and parameter control during the extrusion process. For example, the use of filling rubber is added in the material preparation to improve the bonding force between the sidewall rubber, the sill rubber and the buffer rubber; in the equipment preheating and debugging, the temperature of the rubber mill roller, the thickness of the film, the temperature of the rubber supply, and the temperature of the extruder head and the body are specifically set; in the extrusion process, the parameters such as the wind pressure, cooling water pressure, cooling water temperature and steam pressure of the extruder head are strictly controlled.

[0029] Beneficial effects: These optimization measures further improve the accuracy and stability of tire pressing, ensuring the quality of the tire. At the same time, by accurately controlling various parameters, waste and loss in the production process are reduced, and production efficiency and economic benefits are improved.

[0030] Example 3 On the basis of Example 1, Figure 2-Figure 7 As shown, the modular structure in step S3 includes: a fixed base 1, a module installation area 101 is opened on the top of the fixed base 1, the bottom end of the module installation area 101 is fixedly connected to the horizontal partition 102, a plurality of module panels 103 are arranged in the left and right directions in the module installation area 101, and the bottom end of the module installation area 101 is fixedly connected to the horizontal partition 102.

[0031] A hydraulic lifting mechanism 2 is provided below the partition 102, and the hydraulic lifting mechanism 2 comprises: a hydraulic cylinder body 201, a plurality of hydraulic cylinder bodies 201 are fixedly connected inside the fixed base 1 along the left-right direction, a plurality of hydraulic rods 2011 are connected in each hydraulic cylinder body 201 for sliding up and down, the hydraulic rods 2011 slide upward and penetrate the partition 102, the top of the hydraulic rods 2011 is fixedly connected to the bottom of the module plate 103, the bottom of the hydraulic cylinder body 201 is fixedly connected to a vertical pipe 203, an electromagnetic valve 202 is fixedly installed on the vertical pipe 203, each electromagnetic valve 202 is electrically connected to the controller, the bottom of the vertical pipe 203 is fixedly connected to a main pipe 204, the left end of the main pipe 204 is fixedly connected to a hydraulic pump 205, and an electromagnetic valve 206 is fixedly installed between the main pipe 204 and the hydraulic pump 205.

[0032] The fixed base 1 is also provided with an auxiliary module lifting mechanism 3 including: a screw mounting seat 301, a screw mounting seat in the left and right directions is fixedly installed at the bottom of the left and right side walls of the fixed base 1, a precision screw 311 is actively connected inside the screw mounting seat 301, the precision screw 311 is threadedly connected to a sliding seat 312, the sliding seat 312 is slidably connected to the screw mounting seat 301 left and right, the left end of the screw is fixedly connected to the output shaft of a servo motor 313, a vertical tightening cylinder 302 is fixedly installed on the top of the sliding seat 312, the tightening cylinder 302 is connected to the air pump source, the top push rod end of the tightening cylinder 302 is rotatably connected to the rotating roller 304 along the front and rear direction, and a downward distance sensor 303 is fixedly installed on one side of the push rod of the tightening cylinder 302.

[0033] The module clamping mechanism 4 includes: a clamping electric cylinder 401, a pair of clamping electric cylinders 401 along the front-to-back direction are fixedly installed on the left and right outer walls of the fixed base 1, the front movable ends of the clamping electric cylinders 401 on the left and right sides are fixedly connected to a horizontal bar 402 in the left and right directions, the rear end of the horizontal bar 402 is fixedly connected to a clamping plate 403, the rear end of the clamping plate 403 is fixedly connected to a rubber layer 404, and a distance sensor 2 405 is fixedly installed on the left rear end of the horizontal bar 402.

[0034] The working principle and beneficial effects of the above technical solution are: Working principle: When the hydraulic lift is working, the control module controls the hydraulic pump 205 to run, the solenoid valve 206 opens, and the hydraulic oil in the main pipe 204 is squeezed into each vertical pipe 203. According to the tread and sidewall size of the tire, the control unit controls the solenoid valve 202 in the target size area to open, and the hydraulic oil pushes the hydraulic rod 2011 to the target height of each module plate 103, and controls the solenoid valve 202 to close, and finally forms the mold shape of the target size; when the mold of the target size needs to lift the module plate 103 in a large area, the servo motor runs to rotate the precision screw 311, driving the sliding seat 312 to move accurately to the bottom of the target module plate 103, and the tightening cylinder 302 lifts the target module plate 103 upward, and at the same time drives the rotating roller 304 to slide left and right to lift the module plate 103 in the target area. The distance sensor 303 is responsible for regulating the tightening cylinder 302 to provide distance information; The module clamping mechanism 4 operates, and the left and right clamping electric cylinders 401 are contracted, so that the crossbar 1 402 and the rubber layer 404 of the clamping plate 403 clamp the module plate 103, so that the target size mold shape is fixed. The distance sensor 2 405 is responsible for providing the moving distance of the clamping plate 403, which is convenient for adjusting the contraction distance of the clamping electric cylinder 401.

[0035] This embodiment provides a specific modular structure and its implementation method. The modular structure includes a fixed base 1, a module installation area 101, a partition 102, a module plate 103, a hydraulic lifting mechanism 2, and an auxiliary module lifting mechanism 3. The hydraulic lifting mechanism 2 realizes the lifting and lowering operation of the module plate 103 through the coordinated use of a hydraulic cylinder 201 and a hydraulic rod 2011; the auxiliary module lifting mechanism 3 realizes the lifting and positioning operation of the module through the coordinated use of components such as a precision screw 311, a sliding seat 312, a tightening cylinder 302, and a rotating roller 304. In addition, a module clamping mechanism 4 is also provided to clamp the module to ensure its stability.

[0036] Beneficial effects: The modular structure and its implementation method improve the automation and accuracy of tire pressing, reduce the error and labor intensity of manual operation. At the same time, through the coordinated use of the hydraulic lifting mechanism 2 and the auxiliary module jacking mechanism 3, the module is accurately controlled and positioned, and the production efficiency and product quality are improved.

[0037] Embodiment 4, based on embodiment 1, further comprises: A temperature sensor module, used to detect the operating temperature of the hydraulic pump 205 and the hydraulic cylinder 201; A hydraulic sensor module, used for the internal pressure value of the hydraulic cylinder 201; A density sensor module, used to detect the density of the oil fluid inside the main pipe 204; A flow sensor module is used to detect the flow of oil fluid entering and exiting the vertical pipe 203 from the solenoid valve 202; A flow rate sensor module, used to detect the flow rate of the oil fluid at the valve port opening of the solenoid valve 202; Alarm, used to alarm in case of abnormal situation; The first calculation module is used to calculate the deviation between the axial hydraulic force of the hydraulic cylinder body 201 under test and the theoretical hydraulic force; A second calculation module, which calculates the evaluation value of the internal volume change of the hydraulic cylinder body 201 under test based on the first calculation module; A control module, used for collecting and processing the data of each sensor, the control module is electrically connected to the first calculation module, the second calculation module, the density sensor module, the flow sensor module, the flow velocity sensor module, the flow velocity sensor module, the temperature sensor module, the air pressure sensor module and the alarm respectively; The comparison and judgment module is used to compare and judge the normal and abnormal conditions of the hydraulic volume change state in the hydraulic cylinder body 201.

[0038] Preferably, the first calculation module calculates based on the following formula 1: ;in: is the deviation between the axial hydraulic force in the hydraulic cylinder 201 under test and the theoretical hydraulic force, To detect the end time, To detect the initial moment, The oil fluid inside the main pipe 204 detected by the density sensor module; is the flow length of the oil fluid in the valve cavity of the solenoid valve 202, Detected by flow sensor module The flow rate of the solenoid valve 202 at that moment, Solenoid valve 202 for flow sensor module detection The flow rate at is a logarithmic function, The value of the natural constant is 2.72; is the theoretical flow rate of oil fluid passing through the solenoid valve 202 port, is a sine function, is the angle between the oil flow direction and the valve plane of the solenoid valve 202, and its value is 65°; The average flow rate of the oil at the valve opening of the solenoid valve 202 detected by the flow rate sensor module; The second calculation module is calculated based on the following formula 2: ;in: is the estimated value of the volume change of the hydraulic cylinder body under test during the test period. is the temperature inside the hydraulic cylinder body 201 at time t, is the temperature value inside the hydraulic cylinder body 201 at the initial moment, is the maximum operating temperature of the hydraulic pump 205 detected by the temperature sensor, is the minimum operating temperature of the hydraulic pump 205 detected by the temperature sensor, is the measured pressure value in the hydraulic cylinder 201 under test, is the maximum working pressure in the hydraulic cylinder 201 under test, is the minimum working pressure in the hydraulic cylinder 201 under test, is the ideal pressure value in the hydraulic cylinder 201 under test, is the volume of oil to be delivered from the tested hydraulic cylinder 201; is the maximum volume of oil in the hydraulic cylinder 201 under test, is the minimum volume of oil in the hydraulic cylinder 201 under test; The comparison and judgment module performs comparison. When it is greater than zero, the control module controls the alarm to sound an alarm and mark the position, and promptly stops the hydraulic pump to repair and replace the abnormal hydraulic cylinder 201. When it is less than or equal to zero, the change of the hydraulic volume in the tested hydraulic cylinder body 201 is normal and no maintenance is required.

[0039] The working principle and beneficial effects of the above technical solution are as follows: Working principle: Based on Example 1, this embodiment sets up a complete set of sensor systems and calculation modules for monitoring and controlling the working state of the hydraulic cylinder 201. The temperature sensor module, hydraulic sensor module, density sensor module, flow sensor module and flow rate sensor module are respectively used to detect the working temperature and pressure value of the hydraulic cylinder 201 and its related components, the density and flow rate of the oil fluid and the flow rate and other parameters. The alarm is used to sound an alarm in abnormal situations. The first calculation module and the second calculation module are respectively used to calculate the deviation value between the axial hydraulic force of the tested hydraulic cylinder 201 and the theoretical hydraulic force and the evaluation value of the volume change in the hydraulic cylinder 201. The control module is used to collect and process the data of each sensor, and control the working state of the related components according to the processing results. The comparison and judgment module is used to compare and judge the normal and abnormal conditions of the hydraulic volume change state in the hydraulic cylinder 201.

[0040] Beneficial effects: This technical solution ensures the stability and safety of the tire pressing process by real-time monitoring and controlling the working state of the hydraulic cylinder 201, timely discovering and handling abnormal situations. At the same time, by accurately calculating and analyzing relevant data, the understanding and mastery of the performance of the hydraulic cylinder 201 is improved, providing strong support for subsequent maintenance and optimization. In addition, this technical solution also improves the automation and intelligence level of the production line, injecting new vitality into the development of the tire manufacturing industry.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modular extrusion method for tire tread and sidewall components, characterized in that: include: Step S1: Prepare materials, including tread rubber and sidewall rubber, including sidewall rubber, groin rubber, cushion rubber and filling rubber, and ensure that the rubber is heat-refined uniformly without foreign matter, self-vulcanized rubber and oil stain; Step S2: preheating and debugging the equipment, preheating the rubber mixer and extruder to the set temperature, and adjusting the preset thickness and rubber supply temperature of the produced film; Step S3: performing modular extrusion setting, designing the tread and sidewall components into a modular structure according to the tire design, and setting corresponding molds on the extruder to ensure that each module can be accurately extruded; Step S4: feeding the prepared rubber material into an extruder, and extruding each module of the tread and sidewall components through a modular mold, while controlling the wind pressure, cooling water pressure, cooling water temperature and steam pressure of the extruder head to remain constant; Step S5: Perform quality inspection on the extruded tread and sidewall component modules to ensure that there are no scratches, damage, self-vulcanized rubber and pore defects on the surface, and that the size and weight of each part meet the design requirements; Step S6: Perform module assembly and tire molding work, assemble the qualified tread and sidewall component modules according to the design requirements to form a complete tire structure, and perform subsequent vulcanization and testing processes.

2. A method for modularizing and extruding tire tread and sidewall components according to claim 1, characterized in that: The sidewall rubber material in step S1 further includes a filling rubber, which is filled between the contact parts of the sidewall rubber, the grommet rubber and the buffer rubber, and the modulus of the filling rubber is between the moduli of the sidewall rubber and the grommet rubber.

3. A modular extrusion method for tire tread and sidewall components according to claim 1, characterized in that: In step S2, the temperature of the rubber mixer roller is set to 55+5°C, the film thickness is adjusted to 6-8mm, the capacity is 55kg, and the rubber supply temperature is 85+5°C; the extruder head temperature is not higher than 95°C, and the body temperature is 40+5°C; at the same time, the sample is preheated to 85-95°C, and the temperature of the sample is ensured to be lower than 110°C during use.

4. A modular extrusion method for tire tread and sidewall components according to claim 1, characterized in that: The modular structure in step S3 comprises: a fixed base (1), a module installation area (101) is provided on the top of the fixed base (1), the bottom end of the module installation area (101) is fixedly connected to a horizontal partition (102), a plurality of module panels (103) are provided in the module installation area (101) along the left-right direction, and the bottom end of the module installation area (101) is fixedly connected to the horizontal partition (102).

5. A method for modularizing and extruding tire tread and sidewall components according to claim 4, characterized in that: A hydraulic lifting mechanism (2) is provided below the partition (102), and the hydraulic lifting mechanism (2) comprises: a hydraulic cylinder body (201), a plurality of hydraulic cylinder bodies (201) are fixedly connected inside the fixed base (1) along the left-right direction, a plurality of hydraulic rods (2011) are connected in a sliding manner up and down inside each hydraulic cylinder body (201), the hydraulic rods (2011) slide upward and penetrate the partition (102), the top of the hydraulic rods (2011) is fixedly connected to the bottom of the module plate (103), the bottom of the hydraulic cylinder body (201) is fixedly connected to a vertical pipe (203), a solenoid valve 1 (202) is fixedly installed on the vertical pipe (203), each solenoid valve 1 (202) is electrically connected to a controller, the bottom of the vertical pipe (203) is fixedly connected to a main pipe (204), the left end of the main pipe (204) is fixedly connected to a hydraulic pump (205), and a solenoid valve 2 (206) is fixedly installed between the main pipe (204) and the hydraulic pump (205).

6. A method for modularizing and extruding tire tread and sidewall components according to claim 4, characterized in that: The fixed base (1) is also provided with an auxiliary module lifting mechanism (3) comprising: a screw mounting seat (301), the bottom of the left and right side walls of the fixed base (1) are fixedly installed with screw mounting seats in left and right directions, a precision screw (311) is actively connected inside the screw mounting seat (301), the precision screw (311) is threadedly connected to a sliding seat (312), the sliding seat (312) is slidably connected to the screw mounting seat (301) in the left and right directions, the left end of the screw is fixedly connected to the output shaft of a servo motor (313), a vertical tightening cylinder (302) is fixedly installed on the top of the sliding seat (312), the tightening cylinder (302) is connected to an air pump source, the top push rod end of the tightening cylinder (302) is rotatably connected to a rotating roller (304) along the front-back direction, and a downward distance sensor (303) is fixedly installed on one side of the push rod of the tightening cylinder (302).

7. A method for modularizing and extruding tire tread and sidewall components according to claim 4, characterized in that: The module clamping mechanism (4) comprises: a clamping electric cylinder (401), a pair of clamping electric cylinders (401) along the front-back direction are fixedly installed on the left and right outer walls of the fixed base (1), the front movable ends of the clamping electric cylinders (401) on the left and right sides are fixedly connected to a horizontal bar (402) in the left and right directions, the rear end of the horizontal bar (402) is fixedly connected to a clamping plate (403), the rear end of the clamping plate (403) is fixedly connected to a rubber layer (404), and a distance sensor (405) is fixedly installed on the left rear end of the horizontal bar (402).

8. A method for modularizing and extruding tire tread and sidewall components according to claim 6, characterized in that: In step S4, the wind pressure of the extruder head is controlled to be 0.4 MPa, the cooling water pressure is above 0.1 MPa, the cooling water temperature is not higher than 25° C., the steam pressure is 0.3 MPa, and the extrusion and debonding temperature is not higher than 120° C.

9. A modular extrusion method for tire tread and sidewall components according to claim 5, characterized in that: include: A temperature sensor module, used to detect the operating temperature of the hydraulic pump (205) and the hydraulic cylinder (201); A hydraulic sensor module, used for the internal pressure value of the hydraulic cylinder (201); A density sensor module, used to detect the density of the oil fluid inside the main pipe (204); A flow sensor module, used to detect the flow rate of oil fluid entering and exiting the vertical pipe (203) of the solenoid valve 1 (202); A flow rate sensor module, used to detect the flow rate of the oil fluid at the valve opening of the solenoid valve 1 (202); Alarm, used to alarm in case of abnormal situation; A first calculation module is used to calculate the deviation between the axial hydraulic force of the hydraulic cylinder body (201) under test and the theoretical hydraulic force; A second calculation module, which calculates an evaluation value of a volume change of a hydraulic cylinder body (201) under test based on the first calculation module; A control module is used to collect and process the data of each sensor, and the control module is electrically connected to the first calculation module, the second calculation module, the density sensor module, the flow sensor module, the flow velocity sensor module, the flow velocity sensor module, the temperature sensor module, the air pressure sensor module and the alarm; and a comparison and judgment module is used to compare and judge the normal and abnormal conditions of the hydraulic volume change state in the hydraulic cylinder body (201).

10. A modular extrusion method for tire tread and sidewall components according to claim 9, characterized in that: include: The first calculation module calculates based on the following formula: ;in: is the deviation between the axial hydraulic force in the hydraulic cylinder body (201) under test and the theoretical hydraulic force, To detect the end time, To detect the initial moment, The oil fluid inside the main pipe (204) detected by the density sensor module; is the flow length of the oil fluid in the valve chamber of the solenoid valve 1 (202), Detected by flow sensor module The flow rate of solenoid valve 1 (202) at the moment, Solenoid valve 1 (202) for flow sensor module detection The flow rate at is a logarithmic function, The value of the natural constant is 2.72; is the theoretical flow rate of oil fluid through the valve port of solenoid valve 1 (202), is a sine function, is the angle between the oil flow direction and the valve plane of the solenoid valve (202), and its value is 65°; The average flow rate of the oil at the valve opening of the solenoid valve 1 (202) detected by the flow rate sensor module; The second calculation module is calculated based on the following formula 2: ;in: is the estimated value of the volume change of the hydraulic cylinder body under test during the test period. is the temperature inside the hydraulic cylinder body (201) at time t, is the temperature value inside the hydraulic cylinder body (201) under test at the initial moment, is the maximum operating temperature of the hydraulic pump (205) detected by the temperature sensor, is the minimum operating temperature of the hydraulic pump (205) detected by the temperature sensor, is the actual pressure value measured in the hydraulic cylinder body (201) under test, is the maximum working pressure in the hydraulic cylinder body (201) under test, is the minimum working pressure in the hydraulic cylinder (201) under test, is the ideal pressure value in the hydraulic cylinder body (201) under test, is the volume of oil to be delivered from the hydraulic cylinder (201) under test; is the maximum volume of oil in the hydraulic cylinder (201) under test, is the minimum volume of oil in the hydraulic cylinder (201) under test; The comparison and judgment module performs comparison. When it is greater than zero, the control module controls the alarm to sound an alarm and mark the position, and promptly stops the hydraulic pump to repair and replace the abnormal hydraulic cylinder (201). When it is less than or equal to zero, the change of the hydraulic volume in the tested hydraulic cylinder body (201) is normal and no maintenance is required.

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