A device for detecting the adhesion degree of automobile tire silencing cotton

Abstract

The application discloses a kind of detection device of the sticking degree of automobile tire silence cotton, it is related to automobile tire performance detection technical field, including test frame and installation test component.The detection device of the sticking degree of automobile tire silence cotton, in the application, compression roller is linked with stripping roller by synchronous belt, gear set two, realize that silence cotton release paper is automatically stripped and accurate paste, replace the tedious operation of manual paste, not only paste efficiency is greatly improved, driving arm and driven arm are linked by gear set one, by driving arm, driven arm and the inner and outer three-point support formed by compression roller, not only can firmly fix tire body, avoid that tire appears shift, shakes in rotation, pressure process, accurate adjustment of pressure degree to tire can also be accurately adjusted, perfect reproduction tire deformation state under limit load, each action link shares drive source, it simplifies device structure, reduces failure probability, guarantees the synchronism and coordination of action, improves the overall operation efficiency of device.

Description

Technical Field

[0001] This invention relates to the field of automotive tire performance testing technology, specifically to a device for testing the adhesion of automotive tire sound-absorbing cotton. Background Technology

[0002] As the global automotive industry transitions to new energy vehicles, electric vehicles (EVs) are gaining increasing market share due to their advantages such as low carbon emissions, environmental friendliness, and high operating efficiency. Unlike traditional gasoline-powered vehicles, EVs eliminate major noise sources such as internal combustion engines, significantly reducing overall vehicle noise. This makes tire noise one of the core factors affecting in-vehicle comfort. Therefore, EVs place far stricter demands on tire quietness than traditional gasoline-powered vehicles. To meet this market demand, major automakers and tire manufacturers have launched quiet-insulating tire products. The core technology involves bonding multiple sections of quiet-insulating cotton to the inner tread of the tire. The sound absorption and vibration damping properties of the cotton reduce cavity noise and tread noise generated during tire operation, thereby improving the overall vehicle quietness. However, the adhesion strength between the quiet-insulating cotton and the inner tread directly determines the stability and durability of the quietness performance. If the adhesion is weak, the quiet-insulating cotton is prone to peeling and loosening under conditions of high-speed tire rotation and repeated deformation. This not only results in the loss of quietness but also the potential for the detached cotton to interfere with normal tire operation, posing a safety hazard.

[0003] Currently, indoor testing of passenger car tire performance in China is mainly conducted according to GB4502-2016 "Indoor Test Methods for Passenger Car Tire Performance". However, this standard did not take into account the technical characteristics of noise-reducing foam tires when it was formulated. The test items it covers only target traditional indicators such as tire rolling resistance, wet grip performance, and high-speed performance, and do not involve the testing of the adhesion performance between the tire inner tread and the noise-reducing foam. As a result, there is a lack of unified standards and normative methods for evaluating the adhesion performance of noise-reducing foam tires, and related testing technologies are still in the blank field. Furthermore, existing tire testing equipment is designed around traditional performance indicators and cannot simulate the process of noise-reducing foam pasting or accurately detect the degree of adhesion. After the noise-reducing foam is pasted manually, there is a lack of effective devices to simulate the stress state of the tire under real working conditions such as extreme load and high-speed driving, and it is also impossible to quantify and capture the stress changes on the bonding surface. The bonding effect can only be judged qualitatively by visual observation, which has defects such as low detection accuracy, strong subjectivity, and inability to reproduce extreme working conditions, making it difficult to guarantee the product quality and safety of noise-reducing foam tires.

[0004] In summary, in response to the technical requirements of silent tires for electric vehicles, there is an urgent need to develop a specialized device that can simulate real working conditions and accurately detect the adhesion of the silent tire, filling the gaps in existing standards and technologies, and providing reliable technical support for the quality control of silent tires. This has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a device for detecting the adhesion of sound-absorbing cotton in automobile tires, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a testing device for the adhesion of noise-reducing cotton in automobile tires, comprising a testing frame and a mounting testing assembly. The mounting testing assembly is provided on the front of the testing frame. The mounting testing assembly includes a back plate fixedly mounted on the front of the testing frame. A fixing pin is fixedly mounted on the side end of the back plate, and the fixing pin is hinged to the cylinder body of a translation cylinder via a pin shaft. A drive arm is hinged to the telescopic end of the translation cylinder via a fisheye joint. A roller is rotatably mounted inside the recess at the bottom end of the drive arm. The roller is fixedly connected to the rotating end of a motor, and the motor is fixedly mounted on the outside of the recess of the drive arm. Limiting rings are vertically mounted at both ends of the roller axis, and the limiting rings slide along the roller axis and are secured by screws. A gear set is coaxially mounted on the back of the drive arm, and the drive arm meshes with a driven arm arranged side by side through the gear set. The driven arm has the same structure as the drive arm and swings synchronously in opposite directions under the meshing transmission of the gear set.

[0007] Furthermore, the tire body is supported on the driven arm and the driving arm, and the outer tread of the tire body is in close contact with the driven arm and the driving arm. The thickness of the tire body is in good fit with the relative gap of the limiting ring. Moreover, a micro strain sensor is embedded in the inner tread of the tire body on the bonding surface between the sound insulation cotton and the tire.

[0008] Furthermore, a telescopic cylinder is fixedly installed at the top of the test frame, and a telescopic plate is fixedly connected to the telescopic end of the telescopic cylinder.

[0009] Furthermore, a cotton feeding assembly is installed on the front of the telescopic plate. The cotton feeding assembly includes a mounting plate bolted to the front of the telescopic plate. Guide rails are symmetrically fixed on both sides of the mounting plate, and a lifting cylinder is fixedly installed on the top of the mounting plate.

[0010] Furthermore, the cotton feeding assembly also includes a slide table fixedly connected to the telescopic end of the lifting cylinder. The slide table is limited and slidably engaged with the guide rails on both sides of the mounting plate, and a main frame is fixedly installed on both sides of the bottom end of the slide table.

[0011] Furthermore, the cotton feeding assembly also includes a pressure roller rotatably installed inside the main frame. The pressure roller is in close contact with the inner wall of the tire body, and the driven arm and the driving arm cooperate with the pressure roller to achieve three-point support for the tire body inside and outside.

[0012] Furthermore, an auxiliary peeling assembly is installed on the side of the slide table. The auxiliary peeling assembly includes a loading frame fixedly installed on the side of the slide table. The tampon body is vertically inserted into the cavity of the loading frame, and the adhesive surface of the tampon body is covered with release paper.

[0013] Furthermore, the auxiliary peeling assembly also includes a sub-frame fixedly installed on both sides of the bottom end of the loading frame. A peeling roller is rotatably installed inside the sub-frame, and the peeling roller is used to peel off the release paper attached to the adhesive surface of the winding sliver body.

[0014] Furthermore, the auxiliary stripping assembly also includes a second gear set coaxially mounted on the end of the stripping roller. The input end of the second gear set is coaxially connected to the pulley, and the pulley is connected to the pressure roller for rotational transmission via a synchronous belt.

[0015] Furthermore, a corner of the release paper is pre-peeled from the adhesive surface of the cotton strip body and inserted into the gap between the pressure roller and the inner wall of the tire body. The peeled corner of the release paper is then attached to the outer circumference of the peeling roller. The tire body rotates under the support of the driven arm and the driving arm, and the pressure roller adheres the cotton strip body to the inner wall of the tire body and cooperates with the peeling roller to achieve automatic peeling of the release paper.

[0016] This invention provides a device for detecting the adhesion of sound-absorbing cotton in automobile tires, which has the following beneficial effects; 1. This application uses a translation cylinder to drive the drive arm to swing, and with the meshing transmission of gear set one, it realizes the synchronous reverse swing of the driven arm and the drive arm. This can accurately adjust the pressure applied to the tire, perfectly reproduce the deformation state of the tire under extreme load, and then use the pre-embedded micro strain sensor to monitor the stress change of the bonding surface in real time. Combined with the tire rotation to simulate high-speed driving, it covers the core stress scenarios of the sound insulation cotton in real use, and the test results are more representative and reliable. When separation occurs, the sensor value changes abruptly, the system automatically alarms and records the abnormal position, realizing the fully automated detection of the bonding performance between the sound insulation cotton and the tire.

[0017] 2. In this application, the telescopic cylinder is responsible for driving the cotton feeding assembly to move back and forth, aligning the pressure roller with the tire's inner wall. The lifting cylinder is responsible for precisely controlling the vertical displacement of the pressure roller, ensuring a tight fit between the pressure roller and the tire's inner wall. The two work together, forming a three-point support structure with the drive arm and driven arm, which firmly fixes the tire, preventing displacement or shaking during rotation and pressure application. This provides a stable foundation for pasting and testing, effectively reducing testing errors. Through the linkage transmission between the pressure roller and the peeling roller, automatic peeling of the release paper and precise pasting of the sound-absorbing cotton are achieved, replacing the tedious manual pasting operation. The pressure of the pressure roller remains constant, and the pasting trajectory extends naturally with the tire's rotation. This not only significantly improves pasting efficiency but also ensures uniformity and positional accuracy, avoiding pasting deviations caused by manual operation and providing a reliable basis for subsequent testing.

[0018] 3. In this application, the pressure roller and the peeling roller are linked by a synchronous belt and a gear set to achieve automatic peeling and precise pasting of the silent cotton release paper, replacing the tedious manual pasting operation. This not only greatly improves pasting efficiency, but also allows the drive arm and the driven arm to be linked by a gear set. The three-point support formed by the drive arm, the driven arm, and the pressure roller can not only firmly fix the tire body and prevent the tire from shifting or shaking during rotation and pressure, but also precisely adjust the pressure applied to the tire, perfectly replicating the deformation state of the tire under extreme load. All action links share a common drive source, which simplifies the device structure, reduces the probability of failure, ensures the synchronization and coordination of actions, and improves the overall operating efficiency of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of part of the structure of the device of the present invention; Figure 3 This is a schematic diagram showing the tire assembly state of the test components for this invention. Figure 4 This is a schematic diagram of the installation and testing component structure of the present invention; Figure 5 This is a schematic diagram of the cotton feeding assembly and auxiliary peeling assembly of the present invention; Figure 6 This is a schematic diagram of the cotton feeding assembly structure of the present invention; Figure 7 This is a schematic diagram of the auxiliary stripping component structure of the present invention.

[0020] In the diagram: 1. Test frame; 2. Test assembly installation; 201. Back plate; 202. Fixing pin; 203. Translation cylinder; 204. Drive arm; 205. Roller; 206. Motor; 207. Limit ring; 208. Gear set one; 209. Driven arm; 3. Tire body; 4. Telescopic cylinder; 5. Telescopic plate; 6. Cotton feeding assembly; 601. Mounting plate; 602. Guide rail; 603. Lifting cylinder; 604. Slide table; 605. Main frame; 606. Pressure roller; 7. Auxiliary peeling assembly; 701. Loading frame; 702. Cotton strip body; 703. Release paper; 704. Sub-frame; 705. Peeling roller; 706. Gear set two; 707. Pulley. Detailed Implementation

[0021] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention. Please see Figures 1 to 4This invention provides a technical solution: a device for detecting the adhesion of noise-reducing cotton in automobile tires, comprising a test frame 1 and a test mounting assembly 2. The test frame 1 has the test mounting assembly 2 mounted on its front side. The test mounting assembly 2 includes a back plate 201 fixedly mounted on the front side of the test frame 1. A fixing pin 202 is fixedly mounted on the side end of the back plate 201, and the fixing pin 202 is hinged to the cylinder body of a translation cylinder 203 via a pin shaft. The telescopic end of the translation cylinder 203 is hinged to a drive arm 204 via a fisheye joint, and a roller 205 is rotatably mounted inside the recess at the bottom end of the drive arm 204. The roller 205 is fixedly connected to the rotating end of a motor 206, and the motor 206 is fixedly mounted on the outside of the recess of the drive arm 204. The roller 205 has two axes. A limiting ring 207 is vertically installed at the end, and the limiting ring 207 slides along the axial direction of the roller 205 and is locked by screws. A gear set 208 is coaxially installed on the back of the drive arm 204, and the drive arm 204 meshes with the driven arm 209 arranged side by side through the gear set 208. The driven arm 209 and the drive arm 204 have the same structure and swing synchronously in opposite directions under the meshing transmission of the gear set 208. The tire body 3 is supported on the driven arm 209 and the drive arm 204, and the outer tire surface of the tire body 3 is in close contact with the driven arm 209 and the drive arm 204. The thickness of the tire body 3 is in good fit with the relative gap of the limiting ring 207. Moreover, a micro strain sensor is embedded in the inner tube of the tire body 3 on the bonding surface between the sound insulation cotton and the tire. The specific operation is as follows: This application uses a translation cylinder 203 to drive the drive arm 204 to swing, and with the meshing transmission of gear set 208, the driven arm 209 and the drive arm 204 swing synchronously in opposite directions. This allows for precise adjustment of the pressure applied to the tire, perfectly replicating the tire's deformation state under extreme load. Furthermore, with the help of pre-embedded micro-strain sensors, the stress changes on the bonding surface are monitored in real time. Combined with tire rotation to simulate high-speed driving, this covers the core stress scenarios of the sound-absorbing cotton in real use, making the test results more representative and reliable. When separation occurs, the sensor value changes abruptly, the system automatically alarms and records the abnormal location, realizing fully automated detection of the bonding performance between the sound-absorbing cotton and the tire. In this application, the pressure roller 606 and the peeling roller 70... 5. Through the linkage of synchronous belt and gear set 2 706, the silent cotton release paper 703 is automatically peeled off and accurately pasted, replacing the tedious manual pasting operation. This not only greatly improves pasting efficiency, but also allows the drive arm 204 and driven arm 209 to be linked through gear set 1 208. The three-point support formed by the drive arm 204, driven arm 209 and pressure roller 606 can not only firmly fix the tire body 3 and prevent the tire from shifting or shaking during rotation and pressure, but also accurately adjust the pressure applied to the tire, perfectly replicating the deformation state of the tire under extreme load. All action links share the same drive source, which simplifies the device structure, reduces the probability of failure, ensures the synchronization and coordination of actions, and improves the overall operating efficiency of the device. Please see Figures 5 to 6A telescopic cylinder 4 is fixedly installed at the top of the test frame 1, and a telescopic plate 5 is fixedly connected to the telescopic end of the telescopic cylinder 4. A cotton feeding assembly 6 is installed on the front of the telescopic plate 5. The cotton feeding assembly 6 includes a mounting plate 601 bolted to the front of the telescopic plate 5. Guide rails 602 are symmetrically fixed on both sides of the mounting plate 601, and a lifting cylinder 603 is fixedly installed at the top of the mounting plate 601. The cotton feeding assembly 6 also includes a slide table 604 fixedly connected to the telescopic end of the lifting cylinder 603. The slide table 604 and the guide rails 602 on both sides of the mounting plate 601 are limited and slidably engaged. A main frame 605 is fixedly installed on both sides of the bottom end of the slide table 604. The cotton feeding assembly 6 also includes a pressure roller 606 rotatably installed inside the main frame 605. The pressure roller 606 is in close contact with the inner wall of the tire body 3, and the driven arm 209, the driving arm 204 and the pressure roller 606 cooperate to achieve three-point support for the inner and outer parts of the tire body 3. The specific operation is as follows: In this application, the telescopic cylinder 4 is responsible for driving the cotton feeding component 6 to move back and forth, so as to align the pressure roller 606 with the inner sidewall of the tire. The lifting cylinder 603 is responsible for precisely controlling the up and down displacement of the pressure roller 606, so as to ensure that the pressure roller 606 is in close contact with the inner sidewall of the tire. The two work together and, together with the three-point support structure formed by the drive arm 204 and the driven arm 209, can firmly fix the tire and prevent the tire from shifting or shaking during rotation and pressure. This provides a stable foundation for pasting and testing and effectively reduces testing errors. Please see Figures 5 to 7 An auxiliary peeling assembly 7 is installed on the side of the slide table 604. The auxiliary peeling assembly 7 includes a loading frame 701 fixedly installed on the side of the slide table 604. A cotton swab body 702 is vertically inserted into the cavity of the loading frame 701, and release paper 703 is attached to the adhesive surface of the cotton swab body 702. The auxiliary peeling assembly 7 also includes a sub-frame 704 fixedly installed on both sides of the bottom end of the loading frame 701. A peeling roller 705 is rotatably installed inside the sub-frame 704. The peeling roller 705 is used to peel the release paper 703 attached to the adhesive surface of the wound cotton swab body 702. The auxiliary peeling assembly 7 also includes a part coaxially installed at the end of the peeling roller 705. The gear set 2 706 has its input end coaxially connected to the pulley 707, and the pulley 707 is connected to the pressure roller 606 for rotational transmission via a synchronous belt. The cotton strip body 702 has a corner of the release paper 703 pre-peeled off and inserted into the gap between the pressure roller 606 and the inner wall of the tire body 3. The peeled corner of the release paper 703 is pasted onto the outer circle of the peeling roller 705. The tire body 3 rotates under the support of the driven arm 209 and the driving arm 204. The pressure roller 606 adheres the cotton strip body 702 to the inner wall of the tire body 3 and cooperates with the peeling roller 705 to realize the automatic peeling of the release paper 703. The specific operation is as follows: When the pressure roller 606 rotates, the pulley 707 connected by the synchronous belt drive rotates accordingly. The pulley 707 drives the gear set 706 to rotate, which in turn drives the peeling roller 705 to rotate synchronously. During the rotation of the peeling roller 705, the release paper 703 is continuously wound up, realizing the automatic and continuous peeling of the release paper 703 from the cotton strip body 702. At the same time, the pressure roller 606 applies constant pressure to the cotton strip body 702 during the rotation, making the peeled cotton strip body 702 tightly and evenly adhere to the inner wall of the tire, completing the automatic and precise pasting of the sound-absorbing cotton. Through the linkage transmission of the pressure roller 606 and the peeling roller 705, the release paper 703 is automatically peeled and the sound-absorbing cotton is precisely pasted, replacing the tedious operation of manual pasting. At the same time, the pressure of the pressure roller 606 is constant, and the pasting trajectory extends naturally with the rotation of the tire. This not only greatly improves the pasting efficiency, but also ensures the uniformity and positional accuracy of pasting, avoiding pasting deviations caused by manual operation, and providing a reliable premise for subsequent testing.

[0022] In summary, when using this device to test the adhesion of automotive tire sound-absorbing cotton: First, the operator places the tire body 3 to be tested on the drive arm 204 and driven arm 209 of the test assembly 2. Based on the thickness of the tire body 3, the sliding limit ring 207 is secured with screws, ensuring a clearance fit between the relative spacing of the limit rings 207 and the tire thickness, thus limiting axial displacement of the tire and ensuring stable tire posture during subsequent rotation. The telescopic cylinder 4 at the top of the test frame 1 is activated. The telescopic end of the cylinder 4 pushes the telescopic plate 5 forward, causing the cotton-feeding assembly 6 fixed to the front of the telescopic plate 5 to move forward synchronously until the pressure roller 606 of the cotton-feeding assembly 6 aligns with the inner wall area of ​​the tire body 3. Then, the lifting cylinder 603 at the top of the mounting plate 601 is activated. The telescopic end of the lifting cylinder 603 pushes the slide table 604 downward along the guide rail 602. The slide table 604 causes the main frame 605 and pressure roller 606 at the bottom to move downward synchronously. The pressure roller 606 is pressed against the inner wall of the tire body 3 until it is tightly abutted. At this point, the driven arm 209 and the driving arm 204 form two-point support from the outside of the tire, and the pressure roller 606 forms one-point abutment from the inside of the tire. The three together form a three-point support structure, which firmly fixes the tire body 3 and provides a stable foundation for subsequent sound insulation cotton pasting and testing. In this application, the telescopic cylinder 4 is responsible for driving the cotton pasting and feeding assembly 6 to move back and forth to achieve alignment between the pressure roller 606 and the inner wall of the tire. The lifting cylinder 603 is responsible for precisely controlling the up and down displacement of the pressure roller 606 to ensure that the pressure roller 606 is tightly abutted against the inner wall of the tire. The two work together with the three-point support structure formed by the driving arm 204 and the driven arm 209 to firmly fix the tire and prevent the tire from shifting or shaking during rotation and pressure application. This provides a stable foundation for pasting and testing and effectively reduces testing errors.

[0023] Secondly, a corner of the release paper 703 on the adhesive side of the cotton sliver body 702 in the loading frame 701 is peeled off beforehand. The peeled end of the cotton sliver body 702 is inserted into the gap between the pressure roller 606 and the inner wall of the tire. At the same time, the peeled end of the release paper 703 is glued and fixed to the outer surface of the peeling roller 705. After completing the preparatory work before gluing, the motor 206 is started. The motor 206 drives the roller 205 to rotate. The roller 205 generates friction transmission with the outer surface of the tire, causing the tire body 3 to rotate stably under the three-point support structure. At the same time, the inner wall of the tire contacts and rubs against the pressure roller 606, causing the pressure roller 606 to rotate synchronously. When the pressure roller 606 rotates, the pulley 707 connected by the synchronous belt drive rotates accordingly. The pulley 707 drives the gear set 2 706 to rotate, thereby driving the peeling roller 705 synchronously. During the rotation of the peeling roller 705, the release paper 703 is continuously wound up, achieving automatic and continuous peeling of the release paper 703 from the cotton strip body 702. At the same time, the pressure roller 606 applies constant pressure to the cotton strip body 702 during rotation, tightly and evenly adhering the peeled cotton strip body 702 to the inner wall of the tire, completing the automatic and precise pasting of the sound-absorbing cotton. Through the linkage transmission between the pressure roller 606 and the peeling roller 705, the automatic peeling of the release paper 703 and the precise pasting of the sound-absorbing cotton are achieved. While replacing the tedious operation of manual pasting, the pressure of the pressure roller 606 is constant, and the pasting trajectory naturally extends with the rotation of the tire. This not only greatly improves the pasting efficiency, but also ensures the uniformity and positional accuracy of pasting, avoiding pasting deviations caused by manual operation, and providing a reliable premise for subsequent testing.

[0024] Finally, after the sound-absorbing cotton is pasted, the translation cylinder 203 is activated. The telescopic end of the translation cylinder 203 pushes the drive arm 204 to swing around the fixed pin 202 through the fisheye joint. The gear set 208 on the back of the drive arm 204 meshes with the driven arm 209, driving the driven arm 209 to swing synchronously in the opposite direction. By adjusting the telescopic stroke of the translation cylinder 203, the swing angle between the drive arm 204 and the driven arm 209 is precisely controlled, applying controllable radial pressure to the tire body 3 to simulate the deformation condition of the tire under extreme load. The motor 206 is kept running continuously, driving the tire body 3 to rotate continuously under pressure, simulating the high-speed driving of the tire. Under the stress state, the sound-absorbing cotton bears normal stress and shear stress with the deformation of the tire, completely replicating the extreme stress scenario in real driving. Miniature strain sensors pre-embedded in the bonding surface between the sound-absorbing cotton and the tire capture key data such as stress changes and deformation displacement in real time. When the sound-absorbing cotton experiences peeling, loosening, or other adhesion failures, the sensor values ​​will change abruptly. By analyzing this data, the system can accurately determine the adhesion strength of the sound-absorbing cotton and complete the quantitative detection of adhesion. This application uses a translation cylinder 203 to drive the drive arm 204 to swing, and in conjunction with the meshing transmission of gear set 208, realizes the connection between the driven arm 209 and the drive arm. The synchronous reverse oscillation of the 204 allows for precise adjustment of the pressure applied to the tire, perfectly replicating the tire's deformation under extreme load. Furthermore, with the aid of pre-embedded micro-strain sensors, real-time monitoring of stress changes on the bonding surface is achieved. Combined with tire rotation simulating high-speed driving, this covers the core stress scenarios experienced by the sound-absorbing cotton in real-world use, resulting in more representative and reliable test results. When separation occurs, a sudden change in sensor values ​​triggers an automatic alarm and records the abnormal location, achieving fully automated testing of the bonding performance between the sound-absorbing cotton and the tire. In this application, the pressure roller 606 and the peeling roller 705 are linked via a synchronous belt and gear set 706 to achieve the release paper 703 of the sound-absorbing cotton. Automatic peeling and precise pasting replace the tedious manual pasting operation, which not only greatly improves pasting efficiency, but also allows the drive arm 204 and driven arm 209 to be linked through gear set 208. The three-point support formed by the drive arm 204, driven arm 209 and pressure roller 606 can not only firmly fix the tire body 3 and prevent the tire from shifting or shaking during rotation and pressure, but also precisely adjust the pressure applied to the tire, perfectly replicating the deformation state of the tire under extreme load. All action links share the same drive source, which simplifies the device structure, reduces the probability of failure, and ensures the synchronization and coordination of actions, thereby improving the overall operating efficiency of the device.

[0025] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the existence of an infinite number of specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A device for detecting the adhesion of noise-reducing cotton in automobile tires, comprising a test frame (1) and a test assembly (2), characterized in that, The test frame (1) is provided with a test mounting assembly (2) on the front. The test mounting assembly (2) includes a back plate (201) fixedly mounted on the front of the test frame (1). A fixing pin (202) is fixedly mounted on the side of the back plate (201), and the fixing pin (202) is hinged to the cylinder body of the translation cylinder (203) through a pin shaft. The telescopic end of the translation cylinder (203) is hinged to a drive arm (204) through a fisheye joint, and a roller (205) is rotatably mounted inside the recess at the bottom end of the drive arm (204). The roller (205) is fixedly connected to the motor (206) for rotation. The rotating end, and the motor (206) is fixedly installed on the outside of the recess of the drive arm (204). The two ends of the roller (205) axis are vertically installed with limit rings (207), and the limit rings (207) slide along the roller (205) axis and are locked by screws. The back of the drive arm (204) is coaxially installed with a gear set (208), and the drive arm (204) meshes with the driven arm (209) arranged side by side through the gear set (208). The driven arm (209) has the same structure as the drive arm (204) and swings synchronously in opposite directions under the meshing transmission of the gear set (208).

2. The device for detecting the adhesion of automotive tire sound-absorbing cotton according to claim 1, characterized in that, The driven arm (209) and the driving arm (204) support the tire body (3), and the outer tire surface of the tire body (3) is in close contact with the driven arm (209) and the driving arm (204). The thickness of the tire body (3) is in relative gap with the limiting ring (207), and a micro strain sensor is pre-embedded in the inner tube of the tire body (3) on the bonding surface between the sound insulation cotton and the tire.

3. The device for detecting the adhesion of automotive tire sound-absorbing cotton according to claim 2, characterized in that, The top of the test frame (1) is fixedly equipped with a telescopic cylinder (4), and the telescopic end of the telescopic cylinder (4) is fixedly connected with a telescopic plate (5).

4. The device for detecting the adhesion of automotive tire sound-absorbing cotton according to claim 3, characterized in that, The telescopic plate (5) is equipped with a cotton feeding assembly (6) on its front side. The cotton feeding assembly (6) includes a mounting plate (601) bolted to the front side of the telescopic plate (5). Guide rails (602) are symmetrically fixed on both sides of the mounting plate (601), and a lifting cylinder (603) is fixedly installed on the top of the mounting plate (601).

5. The device for detecting the adhesion of automotive tire sound-absorbing cotton according to claim 4, characterized in that, The cotton feeding assembly (6) also includes a slide (604) fixedly connected to the telescopic end of the lifting cylinder (603). The slide (604) is limited and slidably engaged with the guide rails (602) on both sides of the mounting plate (601), and the main frame (605) is fixedly installed on both sides of the bottom end of the slide (604).

6. The device for detecting the adhesion of automotive tire sound-absorbing cotton according to claim 5, characterized in that, The cotton feeding assembly (6) also includes a pressure roller (606) rotatably installed inside the main frame (605). The pressure roller (606) is in close contact with the inner wall of the tire body (3), and the driven arm (209), the driving arm (204) cooperate with the pressure roller (606) to achieve three-point support for the inner and outer parts of the tire body (3).

7. The device for detecting the adhesion of automotive tire sound-absorbing cotton according to claim 6, characterized in that, An auxiliary peeling assembly (7) is installed on the side of the slide (604). The auxiliary peeling assembly (7) includes a loading frame (701) fixedly installed on the side of the slide (604). A tampon body (702) is vertically inserted into the cavity of the loading frame (701), and release paper (703) is attached to the adhesive surface of the tampon body (702).

8. The device for detecting the adhesion of automotive tire sound-absorbing cotton according to claim 7, characterized in that, The auxiliary peeling assembly (7) also includes a sub-frame (704) fixedly installed on both sides of the bottom end of the loading frame (701). A peeling roller (705) is rotatably installed inside the sub-frame (704), and the peeling roller (705) is used to peel the release paper (703) attached to the adhesive surface of the winding cotton sliver body (702).

9. The device for detecting the adhesion of automotive tire sound-absorbing cotton according to claim 8, characterized in that, The auxiliary stripping assembly (7) also includes a gear set two (706) coaxially mounted on the end of the stripping roller (705). The input end of the gear set two (706) is coaxially connected to the pulley (707), and the pulley (707) is connected to the pressure roller (606) for rotational transmission via a synchronous belt.

10. A device for detecting the adhesion of sound-absorbing cotton in automobile tires according to claim 9, characterized in that, The cotton swab body (702) has a corner of release paper (703) pre-peeled off and inserted into the gap between the pressure roller (606) and the inner wall of the tire body (3). The corner of the release paper (703) that has been peeled off is pasted on the outer circle of the peeling roller (705). The tire body (3) rotates under the support of the driven arm (209) and the driving arm (204). The pressure roller (606) adheres the cotton swab body (702) to the inner wall of the tire body (3) and cooperates with the peeling roller (705) to realize the automatic peeling of the release paper (703).

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