Molding process of noise reduction glue material in tire

Abstract

The invention relates to a molding process of a noise reduction glue material in a tire. The molding process comprises the following steps: S1, carrying out laser cleaning on the inner wall surface of the tire rotating at a uniform speed; s2, rotating the tire cleaned by the laser at a high speed; s3, a high-pressure foaming technology is used for pouring polystyrene foam on the inner wall of the rotating tire, and molding of the noise reduction glue material in the tire is completed; s4, performing three-dimensional detection on the thickness of the noise reduction glue material in the tire; wherein the rotating speed of the tire in the step S2 ranges from 0 rpm to 1000 rpm; in the step S3, the glue filling time of the polystyrene foam is 1-3 s, and the glue filling speed is 100-600 g / s. According to the molding process of the noise-reducing glue material in the tire, the original molding process is changed, and the noise-reducing glue material is directly molded on the inner wall surface of the tire by using a high-pressure foaming technology, so that the production efficiency and the reliability of the noise-reducing glue material in the tire are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of tire production, in particular to a molding process of a noise reduction glue material inside a tire. Background Art

[0002] Currently, the installation of noise-reducing adhesive materials inside tires is largely manual. First, foamed rubber is foamed into a specific shape in a mold to create the noise-reducing adhesive material. Then, adhesive is evenly applied to the inner wall of the tire. Finally, the molded noise-reducing adhesive is manually bonded to the inside of the tire, completing the assembly process.

[0003] The existing process has the following disadvantages: 1. Since the existing noise reduction glue material needs to be separately molded, the cost is high and the process is complicated; 2. During assembly, the noise reduction glue material needs to be bonded to the inner wall of the tire with glue, which is costly and requires many steps; 3. Bonding is performed manually, which is highly unstable and inefficient during assembly; 4. After assembly, the bonding effect between the adhesive glue and the noise reduction glue material is unstable and may fall off, posing a safety hazard. Summary of the Invention

[0004] Based on this, it is necessary to provide a molding process for the noise reduction glue material inside the tire to address the above-mentioned technical problems existing in the prior art. By changing the original molding process and using high-pressure foaming technology to directly mold the noise reduction glue material on the inner wall surface of the tire, the production efficiency and reliability of the noise reduction glue material inside the tire are greatly improved.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A molding process for tire internal noise reduction glue material comprises the following steps:

[0007] S1. Laser cleaning the inner wall surface of a tire rotating at a constant speed;

[0008] S2, high-speed rotation of the laser-cleaned tire;

[0009] S3. Use high-pressure foaming technology to pour foam glue onto the inner wall of the rotating tire to complete the formation of the noise reduction glue material inside the tire;

[0010] S4. Perform three-dimensional detection of the thickness of the noise reduction glue material inside the tire;

[0011] Wherein, in step S2, the rotation speed of the tire is between 0-1000 rpm;

[0012] In step S3, the foam glue pouring time is between 1-3 seconds, and the pouring speed is between 100-600g / s.

[0013] Preferably, in step S2, the rotation speed of the tire is between 400-600 rpm.

[0014] Preferably, in step S2, a hydraulic clamping chuck assembly is used to clamp and fix the tire, and the tire is rotated at high speed, and the clamping force range of the hydraulic clamping chuck assembly is between 10-100N.

[0015] Preferably, the clamping force of the hydraulic clamping chuck assembly ranges from 10 to 20N.

[0016] Preferably, in step S3, after the foam glue is poured onto the inner wall of the rotating tire, the tire is rotated for 10-30 seconds to complete the molding of the noise reduction glue material inside the tire.

[0017] Preferably, in step S3, the outlet of the foam glue is always perpendicular to the inner wall surface of the tire, and the distance between the outlet of the foam glue and the inner wall surface of the tire is 25-50 mm.

[0018] Preferably, in step S1 , the laser power is between 500 W and 2000 W, and after laser cleaning, the surface tension of the inner wall surface of the tire is greater than 38 dyne / cm.

[0019] Preferably, in step S4, a three-dimensional camera is used to perform three-dimensional detection on the thickness of the noise reduction glue material inside the tire.

[0020] Preferably, the molding process further includes step S5, laser ablation of the surface of the noise reduction glue material inside the tire.

[0021] Preferably, in step S5 , the ablation power of the laser is between 500W and 2000W.

[0022] Due to the adoption of the above technical solution, the present invention has the following advantages compared with the prior art:

[0023] 1. The molding process of the present invention uses high-pressure foaming technology to directly mold the noise reduction glue material on the inner wall surface of the tire, greatly shortening the molding and assembly process of the noise reduction glue material in the tire and simplifying the process. After the present invention is applied to production, the production time is about 1 minute / pcs, compared with the production time of about 10 minutes / pcs of the original process, greatly improving production efficiency;

[0024] 2. The molding process of the present invention reduces the impact of human operation, and all production parameters can be quantitatively controlled, which plays an important role in improving product quality;

[0025] 3. The molding process of the present invention does not require the use of other glues to bond tires and noise reduction glue materials, thus saving production costs;

[0026] 4. The present invention uses high-flow glue pouring to avoid the situation where some foam glue foams first and some foam glue foams later when the flow rate is low, resulting in uneven texture inside the foam glue. At the same time, with the high-speed rotation of the tire, the foam glue can quickly penetrate into the tiny gaps on the inner wall of the tire, greatly enhancing the bonding effect between the noise reduction glue material after molding and the inner wall of the tire.

[0027] 5. The molding process of the present invention greatly improves the noise reduction effect of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the overall structural diagram of the existing tire noise reduction glue material assembly;

[0029] Figure 2 It is a front view of the production equipment of the present invention;

[0030] Figure 3 It is a side view of the production equipment of the present invention;

[0031] Figure 4 It is a top view of the production equipment of the present invention;

[0032] Figure 5 is a structural diagram of the laser cleaning device of the present invention;

[0033] Figure 6 This is a structural diagram of the tire rotating device and the high-pressure foaming glue coating device of the present invention;

[0034] Figure 7 is a front view of the tire rotating device of the present invention;

[0035] Figure 8 is a top view of the tire rotating device of the present invention;

[0036] Figure 9 is a side view of the tire rotating device of the present invention;

[0037] Figure 10 It is a structural diagram of the glue thickness detection device and the laser ablation device of the present invention;

[0038] Figure 11 is a structural diagram of the pressure plate clamping chuck assembly of the present invention;

[0039] Figure 12 This is a structural diagram of the present invention's pressure plate clamping chuck assembly fixing a tire;

[0040] Among them: 1. Tire; 2. Adhesive glue; 3. Noise reduction glue material;

[0041] 100, laser cleaning device; 110, first smoke removal assembly; 120, laser mirror cleaning assembly; 130, first tire lifting, positioning, and rotating assembly; 131, first clamping member; 132, first positioning member; 133, first driving mechanism; 140, first bracket;

[0042] 200, tire rotation device; 210, hydraulic clamping chuck assembly; 211, chuck; 212, clamping plate; 213, clamping cylinder; 214, sidewall support ring; 215, inner ring positioning block; 220, power mechanism; 221, rotating motor; 222, swing motor; 230, tire lifting and positioning assembly; 231, second clamping member; 232, second positioning member; 233, second driving mechanism; 240, connecting assembly; 241, connecting member; 242, extension arm; 250, second bracket;

[0043] 300, high-pressure foaming glue coating device; 310, glue pouring moving mechanism; 320, high-pressure foaming pouring system; 330, third bracket;

[0044] 400, glue coating thickness detection device; 410, three-dimensional detection camera assembly; 420, second tire lifting, positioning and rotating assembly; 421, third clamping member; 422, third positioning member; 423, third driving mechanism; 430, fourth bracket;

[0045] 500, conveying device;

[0046] 600, laser ablation device; 610, second smoke removal and dust removal assembly; 620, laser array mirror ablation assembly; 630, third tire lifting, positioning and rotating assembly; 631, fourth clamping member; 632, fourth positioning member; 633, fourth driving mechanism; 640, fifth bracket. DETAILED DESCRIPTION

[0047] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0049] Currently, the installation of noise-reducing adhesive materials inside tires is largely manual. First, foamed rubber is foamed into a specific shape in a mold to create the noise-reducing adhesive material. Then, adhesive is evenly applied to the inner wall of the tire. Finally, the molded noise-reducing adhesive is manually bonded to the inside of the tire, completing the assembly process. Figure 1 This is the overall structure diagram of the existing tire noise reduction glue material assembly.

[0050] Combine Figure 1 The existing process has the following disadvantages: 1. Since the existing noise reduction glue material needs to be molded separately, the cost is high and the process is complicated; 2. During assembly, the noise reduction glue material needs to be bonded to the inner wall of the tire with glue, which is costly and requires many steps; 3. The bonding is done manually, which is unstable and inefficient during assembly; 4. After assembly, the bonding effect between the adhesive glue and the noise reduction glue material is unstable and may fall off, posing a safety hazard.

[0051] On this basis, the present invention provides a molding process for a tire internal noise reduction glue material, comprising the following steps:

[0052] S1. Laser cleaning the inner wall surface of a tire rotating at a constant speed;

[0053] S2, high-speed rotation of the laser-cleaned tire;

[0054] S3. Use high-pressure foaming technology to pour foam glue onto the inner wall of the rotating tire to complete the formation of the noise reduction glue material inside the tire;

[0055] S4. Perform three-dimensional detection of the thickness of the noise reduction glue material inside the tire;

[0056] Wherein, in step S2, the rotation speed of the tire is between 0-1000 rpm;

[0057] In step S3, the foam glue pouring time is between 1-3 seconds, and the pouring speed is between 100-600g / s.

[0058] In this embodiment, in step S2, the tire rotation speed can also be between 100-800 rpm, 200-800 rpm, 300-700 rpm, preferably between 400-600 rpm, and specifically can be 300 rpm, 400 rpm, 500 rpm, 600 rpm, or 700 rpm. The tire rotation speed affects the magnitude of the centrifugal force generated by the tire rotation. Under the action of centrifugal force, the foaming glue is constantly subjected to a large pressure during the process of converting from liquid to solid, causing the gas generated within the foaming glue to be compressed and smaller. As the foaming glue solidifies, it is locked inside the foaming glue, thereby affecting the subsequent uniform molding of the foaming glue.

[0059] In this embodiment, in step S2, a hydraulic clamping chuck assembly is used to clamp and secure the tire, and the tire is rotated at high speed. The clamping force of the hydraulic clamping chuck assembly ranges from 10-100 N, and can also range from 10-90 N, 10-70 N, 10-50 N, 10-30 N, and preferably ranges from 10-20 N, and specifically can range from 10 N, 15 N, 20 N, 30 N, 40 N, and 50 N. A clamping force that is too weak makes it difficult to clamp the tire, while a clamping force that is too strong can cause deformation of the clamped portion of the tire, affecting the subsequent molding of the noise reduction glue material.

[0060] In this embodiment, the glue pouring speed in step S3 can also be between 100-600g / s, 100-500g / s, 100-400g / s, 100-300g / s, and 100-200g / s, and specifically can be 100g / s, 150g / s, 200g / s, 300g / s, 400g / s, 500g / s, and 600g / s. A glue pouring speed that is too fast is technically difficult to achieve and the glue will be too thick. A glue pouring speed that is too slow will cause foaming during the glue pouring process, affecting the uniform formation of the subsequent foamed glue.

[0061] In this embodiment, the glue pouring time in step S3 is between 1-3 seconds. If the time is too long, foaming will begin during the glue pouring process, affecting the uniform molding of the subsequent foamed glue.

[0062] In this embodiment, in step S3, after the foam glue is poured onto the inner wall of the rotating tire, the tire is rotated for 10-30 seconds to complete the molding of the noise reduction glue material inside the tire.

[0063] In this embodiment, in step S3, the outlet of the foam glue is always perpendicular to the inner wall surface of the tire, and the distance between the outlet of the foam glue and the inner wall surface of the tire is 25-50 mm, specifically, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, or 50 mm.

[0064] In this embodiment, in step S1, the laser power is between 500W and 2000W. After laser cleaning, the surface tension of the inner wall of the tire is greater than 38 dyne / cm. The laser power can also be between 500W and 1800W, 500W and 1700W, 500W and 1500W, or 500W and 1200W, and more specifically, can be 600W, 700W, 800W, 900W, 1000W, 1100W, or 1200W.

[0065] In this embodiment, in step S4, a three-dimensional camera is used to perform three-dimensional detection on the thickness of the noise reduction glue material inside the tire.

[0066] In this embodiment, the molding process further includes step S5, laser ablation of the surface of the noise reduction glue material inside the tire. The laser ablation power is between 500W and 2000W. The laser power can also be between 500W and 1800W, 500W and 1700W, 500W and 1500W, or 500W and 1200W, and more specifically, can be 600W, 700W, 800W, 900W, 1000W, 1100W, or 1200W.

[0067] The molding process of the noise reduction glue material inside the tire of the present invention changes the original molding process and uses high-pressure foaming technology to directly mold the noise reduction glue material on the inner wall surface of the tire, thereby greatly improving the production efficiency and reliability of the noise reduction glue material inside the tire.

[0068] The present invention is described in detail below with reference to specific embodiments.

[0069] Example 1

[0070] This embodiment provides a molding process for a tire internal noise reduction glue material, comprising the following steps:

[0071] S1. Laser cleaning is performed on the inner wall of a tire rotating at a constant speed. Specifically, the oil film on the inner wall of the tire is evenly cleaned by combining the rotating tire with a high-power laser array lens for scanning cleaning. In this embodiment, the laser cleaning power is between 500W and 2000W. After laser cleaning, the surface tension of the inner wall of the tire is above 38 dyne / cm, facilitating the subsequent bonding of the foam adhesive to the inner wall of the tire.

[0072] S2. High-speed rotation of the laser-cleaned tire. Specifically, a hydraulic clamping chuck assembly is used to clamp the tire. A motor drives the hydraulic clamping chuck assembly to rotate at high speed, which in turn drives the tire to rotate at high speed. In this embodiment, the hydraulic clamping chuck assembly has a clamping force of 10N and the tire rotates at 550rpm.

[0073] S3. Use high-pressure foaming technology to pour foam glue onto the inner wall of the rotating tire to complete the molding of the noise reduction glue material inside the tire. Specifically, use high-pressure foaming technology to spray out the A and B components of 600g of two-component polyurethane foam glue at a pressure of 14-15Mpa, complete mixing within 1s in the mixing chamber, and inject the foam glue onto the inner wall of the high-speed rotating tire at a speed of 600g / s within 1s, so that the foam glue on the inner wall of the tire starts foaming almost at the same time. Continue to rotate the tire for 30s to complete the molding of the noise reduction glue material inside the tire. During the glue pouring process, the glue outlet of the foam glue is always perpendicular to the center line of the inner wall surface of the tire, and the glue outlet of the foam glue is 30mm away from the inner wall surface of the tire. The two-component polyurethane foam glue used in the present invention is an existing product and can be purchased on the market. It is not described in detail as the inventive point of the present invention.

[0074] This embodiment uses a high-flow glue pouring method to avoid the uneven texture of the foamed glue caused by low flow rates, where some foamed glue foams first and some foamed later. Furthermore, the high-speed rotation of the tire allows the foamed glue to quickly penetrate the tiny gaps in the tire's inner wall, greatly enhancing the adhesion between the formed noise reduction glue material and the tire's inner wall.

[0075] S4. Perform three-dimensional inspection on the thickness of the noise reduction glue material inside the tire. Specifically, a three-dimensional camera is used to perform three-dimensional inspection on the thickness of the noise reduction glue material inside the tire to ensure product quality.

[0076] To enhance the friction of the noise-reducing adhesive surface and facilitate subsequent attachment of other components, the process also includes step S5, laser ablation of the surface of the noise-reducing adhesive inside the tire while it is rotating at a constant speed. Specifically, the tire is rotated at a constant speed and a high-power laser array lens is used for ablation, creating a specific pattern in the noise-reducing adhesive inside the tire. The laser ablation power is between 500W and 2000W.

[0077] In this embodiment, the centrifugal force generated by the high-speed rotating tire is used to uniformly shape the foam glue. The noise reduction glue material after molding has uniform internal texture, smooth surface and uniform thickness.

[0078] Example 2

[0079] This embodiment provides a molding process for a tire internal noise reduction glue material, comprising the following steps:

[0080] S1. Laser cleaning is performed on the inner wall of a tire rotating at a constant speed. Specifically, the oil film on the inner wall of the tire is evenly cleaned by combining the rotating tire with a high-power laser array lens for scanning cleaning. In this embodiment, the laser cleaning power is between 500W and 2000W. After laser cleaning, the surface tension of the inner wall of the tire is above 38 dyne / cm, facilitating the subsequent bonding of the foam adhesive to the inner wall of the tire.

[0081] S2. High-speed rotation of the laser-cleaned tire. Specifically, a hydraulic clamping chuck assembly is used to clamp the tire. A motor drives the hydraulic clamping chuck assembly to rotate at high speed, which in turn drives the tire to rotate at high speed. In this embodiment, the hydraulic clamping chuck assembly has a clamping force of 20N and the tire rotates at 500rpm.

[0082] S3. Use high-pressure foaming technology to pour foam glue onto the inner wall of the rotating tire to complete the molding of the noise reduction glue material inside the tire. Specifically, use high-pressure foaming technology to spray out 600g of components A and B of the two-component polyurethane foam glue at a pressure of 14-15Mpa, complete the mixing in the mixing chamber within 1s, and inject the foam glue onto the inner wall of the high-speed rotating tire at a speed of 400g / s, so that the foam glue on the inner wall of the tire starts to foam almost at the same time. Continue to rotate the tire for 30s to complete the molding of the noise reduction glue material inside the tire. During the glue pouring process, the glue outlet of the foam glue is always perpendicular to the center line of the inner wall surface of the tire, and the glue outlet of the foam glue is 40mm away from the inner wall surface of the tire.

[0083] This embodiment uses a high-flow glue pouring method to avoid the uneven texture of the foamed glue caused by low flow rates, where some foamed glue foams first and some foamed later. Furthermore, the high-speed rotation of the tire allows the foamed glue to quickly penetrate the tiny gaps in the tire's inner wall, greatly enhancing the adhesion between the formed noise reduction glue material and the tire's inner wall.

[0084] S4. Perform three-dimensional inspection on the thickness of the noise reduction glue material inside the tire. Specifically, a three-dimensional camera is used to perform three-dimensional inspection on the thickness of the noise reduction glue material inside the tire to ensure product quality.

[0085] To enhance the friction of the noise-reducing adhesive surface and facilitate subsequent attachment of other components, the process also includes step S5, laser ablation of the surface of the noise-reducing adhesive inside the tire while it is rotating at a constant speed. Specifically, the tire is rotated at a constant speed and a high-power laser array lens is used for ablation, creating a specific pattern in the noise-reducing adhesive inside the tire. The laser ablation power is between 500W and 2000W.

[0086] In this embodiment, the centrifugal force generated by the high-speed rotating tire is used to uniformly shape the foam glue. The noise reduction glue material after molding has uniform internal texture, smooth surface and uniform thickness.

[0087] The final foaming thickness of the tire internal noise reduction glue material prepared using the molding process of Example 1 accounts for 40%-60% of the distance from the tire inner wall to the tire bead; the final foaming coverage accounts for 40%-100% of the tire ground contact width.

[0088] Comparative Example 1

[0089] The noise-reducing adhesive material was prepared using an existing molding process. Specifically, the same two-component polyurethane foam used in Examples 1 and 2 was foamed into a specific shape in a mold to create a specific noise-reducing adhesive material. Then, adhesive was evenly applied to the inner wall of the tire by hand. The molded noise-reducing adhesive material was then manually bonded to the inner side of the tire using glue, completing the tire internal noise-reducing adhesive material assembly process.

[0090] Through testing, it was found that the noise reduction effect of the tires in Example 1 and Example 2 was about 5 times that of the tire in Comparative Example 1.

[0091] As attached Figures 2 to 10 As shown, this embodiment also provides a production equipment for realizing the above-mentioned tire internal noise reduction glue material molding process, including: a laser cleaning device 100, a tire rotating device 200, a high-pressure foaming glue coating device 300, a glue coating thickness detection device 400, a conveying device 500, and a laser ablation device 600.

[0092] The conveying device 500 is used to transport tires; the laser cleaning device 100 is used to laser clean the inner wall surface of the tire; the tire rotating device 200 is used to fix and rotate the laser-cleaned tire; the high-pressure foaming glue coating device 300 is used to inject foam glue into the rotating tire to complete the formation of the noise-reducing glue material inside the tire; the glue thickness detection device 400 is used to detect the thickness of the noise-reducing glue material inside the tire; and the laser ablation device 600 is used to ablate the surface of the noise-reducing glue material inside the tire. The laser cleaning device 100, tire rotating device 200, high-pressure foaming glue coating device 300, glue thickness detection device 400, and laser ablation device 600 are sequentially arranged on the conveying device 500.

[0093] The production process of the production equipment of this embodiment is as follows: the laser cleaning device 100 first laser cleans the oil film on the inner wall surface of the tire, then the tire rotating device 200 fixes and rotates the laser-cleaned tire, and the high-pressure foaming glue coating device 300 injects foam glue into the rotating tire, and performs high-pressure foam glue infusion on the tire to complete the molding of the noise reduction glue material inside the tire, and then the glue coating thickness detection device 400 performs three-dimensional detection of the thickness of the noise reduction glue material inside the tire, and finally the laser ablation device 600 ablates the surface of the noise reduction glue material inside the tire, completing the entire production process.

[0094] In this embodiment, the conveying device 500 may be a roller conveyor, comprising a frame, a plurality of rollers arranged at regular intervals on the frame for rotation, and a power mechanism for driving the plurality of rollers. The conveying direction of the tire is consistent with the direction of rotation of the rollers. For example, if a person stands facing the conveying device 500, the tire is conveyed forward when the rollers rotate clockwise, and backward when the rollers rotate counterclockwise. The tire conveying direction is perpendicular to the length of the rollers.

[0095] In this embodiment, the laser cleaning device 100 includes a first smoke and dust removal assembly 110, a laser lens cleaning assembly 120, a first tire lifting, positioning, and rotating assembly 130, and a first bracket 140. After securing the tire, the first tire lifting, positioning, and rotating assembly 130 lifts the tire off the conveyor 500 and rotates the tire at a constant speed. The laser lens cleaning assembly 120 uses laser light to clean the inner wall surface of the tire, and the first smoke and dust removal assembly 110 promptly absorbs and discharges the smoke and particulate matter generated during laser cleaning.

[0096] Specifically, the first tire lifting, positioning, and rotating assembly 130 includes a first clamping member 131 that moves left and right on the conveyor 500 to clamp the tire, a first positioning member 132 that moves up and down on the conveyor 500 to position the tire, and a first driving mechanism 133 that drives the first positioning member 132 to move up and down and rotate at a constant speed. This first tire lifting, positioning, and rotating assembly 130 is conventional technology, and its detailed structure is not further described.

[0097] The first bracket 140 is positioned above the conveyor 500. The first smoke and dust removal assembly 110 is mounted on the first bracket 140. The laser lens cleaning assembly 120 is mounted on the first bracket 140 for vertical movement. The laser lens cleaning assembly 120 is positioned above the first positioning member 132. A power mechanism may also be included to drive the laser lens cleaning assembly 120 for vertical movement. The laser lens cleaning assembly 120 uses a high-power laser machine, coupled with a uniformly rotating tire, to clean the inner wall of the tire using a laser scanning method. This method instantly evaporates the oil film carried by the previous process on the inner wall of the tire, thereby improving the adhesion between the inner wall of the tire and the foam adhesive used in the subsequent process. In this embodiment, the laser power ranges from 500W to 2000W. After laser cleaning, the surface tension of the inner wall of the tire is above 38 dyne / cm.

[0098] During operation, the first clamping member 131 clamps the tire on the conveying device 500, the first positioning member 132 is located under the tire to position the tire, the first driving mechanism 133 drives the first positioning member 132 to move upward, and at the same time the first clamping member 131 is released. After the first positioning member 132 moves upward into position, the first driving mechanism 133 drives the first positioning member 132 to drive the tire to rotate along the central axis of the tire. The laser array mirror cleaning assembly 120 is located directly above the first positioning member 132, and the upper and lower positions are adjusted until the laser array mirror cleaning assembly 120 is facing the inner wall surface of the tire. The laser array mirror cleaning assembly 120 performs laser cleaning on the rotating tire, and the first smoking and dust removal assembly 110 promptly absorbs the smoke and particulate matter generated during laser cleaning and discharges them out of the production equipment.

[0099] In this embodiment, the tire rotation device 200 includes a hydraulic clamping chuck assembly 210, a power mechanism 220, a tire lifting and positioning assembly 230, and a second bracket 250. After the tire lifting and positioning assembly 230 secures the tire, it is lifted off the conveyor 500. The hydraulic clamping chuck assembly 210 clamps the tire using a self-centering hydraulic chuck and rotates it until the tire's central axis is horizontal. The power mechanism 220 drives the hydraulic clamping chuck assembly 210 to rotate, causing the tire to rotate about its central axis.

[0100] Specifically, the tire lifting and positioning assembly 230 includes a second clamping member 231 that moves left and right on the conveyor 500 to clamp the tire, a second positioning member 232 that moves up and down on the conveyor 500 to position the tire, and a second driving mechanism 233 that drives the second positioning member 232 up and down. The tire lifting and positioning assembly 230 is conventional, and its detailed structure is not further described.

[0101] The second bracket 250 is disposed above the conveying device 500, and the hydraulic clamping chuck assembly 210 and the power mechanism 220 are disposed on the second bracket 250. In this embodiment, the hydraulic clamping chuck assembly 210 is a six-jaw hydraulic clamping chuck assembly. The six-jaw hydraulic clamping chuck assembly clamps and secures the tire using an automatic centering hydraulic chuck, ensuring concentricity during rotation, ensuring smooth operation of the equipment during tire rotation, and more uniform force on the tire. The rotation speed range of the hydraulic clamping chuck assembly 210 is between 0-1000 rpm, and can also be between 100-800 rpm, 200-800 rpm, 300-700 rpm, and preferably between 400-600 rpm. The clamping force range of the hydraulic clamping chuck assembly 210 for clamping the tire is between 10-100N, and can also be between 10-90N, 10-70N, 10-50N, 10-30N, and preferably between 10-20N. If the clamping force is too small, it is not easy to clamp the tire. If the clamping force is too large, the clamped position of the tire will be deformed, affecting the subsequent molding of the noise reduction glue material.

[0102] As attached Figure 11 and 12 As shown, the hydraulic clamping chuck assembly 210 can also be a pressure plate clamping chuck assembly. This changes the tire's outer wall clamping to the sidewall clamping, significantly reducing deformation caused by outer wall clamping, which can lead to uneven foam molding. Specifically, the pressure plate clamping chuck assembly includes a chuck 211, a clamping plate 212, and a clamping cylinder 213. The tire 1 is placed flat on the chuck 211. The clamping plate 212 is mounted on the chuck 211 to secure the tire 1 to the chuck 211. The clamping cylinder 213 is used to drive the clamping plate 212 to secure the sidewall of the tire 1.

[0103] There are at least two clamping plates 212, which are evenly spaced along the circumference of the chuck 211. In this embodiment, there are six clamping plates 212, and the number of clamping cylinders 213 for driving the clamping plates 212 is the same as that of the clamping plates 212, which is also six.

[0104] In this embodiment, the clamping plate 212 has an initial position and an operating position. In the initial position, the clamping plate 212 is perpendicular to the plane of the chuck 211. In the operating position, the clamping plate 212 rotates toward the plane of the chuck 211, securing the sidewall of the tire 1 between the clamping plate 212 and the plane of the chuck 211. Preferably, in the operating position, the clamping plate 212 is parallel to the plane of the chuck 211. The clamping cylinder 213 drives the clamping plate 212 to rotate.

[0105] In this embodiment, an annular sidewall support ring 214 is provided on the chuck 211 , the tire 1 is sleeved on the outside of the sidewall support ring 214 , and the clamping cylinder 213 is located inside the sidewall support ring 214 to save space.

[0106] In this embodiment, the sidewall support ring 214 is provided with an inner ring positioning block 215 for locating the position of the tire 1. Specifically, the inner ring positioning block 215 is located on the inner side of the sidewall support ring 214, with its lower end pivotally mounted on the sidewall support ring 214 and its upper end provided with an outwardly extending protrusion. To fit the tire 1 onto the outer side of the sidewall support ring 214, the inner ring positioning block 215 is first rotated away from the sidewall support ring 214, allowing the tire 1 to fit onto the outer side of the sidewall support ring 214. The inner ring positioning block 215 is then rotated toward the sidewall support ring 214, positioning the protrusion on its upper end against the sidewall of the tire 1.

[0107] The inner ring positioning block 215 and the clamping cylinder 213 are spaced apart to prevent the components from being too close together and affecting their use.

[0108] The power mechanism 220 includes a rotary motor 221, which is connected to the hydraulic clamping chuck assembly 210. Specifically, the rotary shaft of the hydraulic clamping chuck assembly 210 is connected to the output end of the rotary motor 221 via a coupling. The central axis of the output end of the rotary motor 221 and the central axis of the tire are aligned. The rotary motor 221 drives the tire to rotate about its central axis. To save space and ensure safe operation of the equipment, the rotary motor 221 and the hydraulic clamping chuck assembly 210 can be connected via a speed reducer.

[0109] To ensure that the foam completely covers the inner wall of the tire, in this embodiment, the power mechanism 220 further includes a swing motor 222. This swing motor 222 is configured to drive the tire to swing at a predetermined angle, which is the angle between the tire's central axis and the horizontal plane. Specifically, the swing motor 222 drives the tire to swing at an angle between -30° and +30°, where a positive angle is defined as a counterclockwise rotation from the horizontal plane to the tire's central axis, and a negative angle is defined as a clockwise rotation from the horizontal plane to the tire's central axis.

[0110] In this embodiment, the output end of the swing motor 222 is connected to the hydraulic clamping chuck assembly 210 via a connecting assembly 240. The swing motor 222 drives the hydraulic clamping chuck assembly 210 to swing synchronously with the tire at a corresponding angle, and the central axis of the output end of the rotating motor 221 is aligned with the central axis of the tire. Specifically, the connecting assembly 240 is rotatably mounted on the second bracket 250 and includes a connecting member 241 disposed perpendicular to the direction of motion of the conveying device 500. The connecting member 241 is horizontally arranged. One end of the connecting member 241 is rotatably mounted on the second bracket 250 via a rotating shaft, and the other end is connected to the output end of the swing motor 222 mounted on the second bracket 250 via a rotating shaft and a coupling. A through hole is provided in the center of the connecting member 241. The end of the rotating shaft of the hydraulic clamping chuck assembly 210 passes through the through hole and is connected to the output end of the rotating motor 221 via a coupling. A mounting portion may also be provided at the through hole. The mounting portion is mounted over the rotating shaft of the hydraulic clamping chuck assembly 210 to distribute the force on the rotating shaft.

[0111] In order to stabilize the equipment, the connecting assembly 240 further includes an extension arm 242 . The extension arm 242 extends from the middle of the connecting member 241 toward the rotating motor 221 . The rotating motor 221 is fixedly mounted on the extension arm 242 .

[0112] In this embodiment, the high-pressure foam glue coating device 300 includes a glue dispensing mechanism 310, a high-pressure foaming injection system 320, and a third bracket 330. The glue dispensing mechanism 310 drives the high-pressure foaming injection system 320 to move, and the high-pressure foaming injection system 320 injects foam glue into the high-speed rotating tire, completing the formation of the noise reduction glue material inside the tire.

[0113] Specifically, the third bracket 330 is arranged above the conveying device 500, the glue pouring movable mechanism 310 is movably arranged on the third bracket 330, and the high-pressure foaming pouring system 320 is arranged on the glue pouring movable mechanism 310. The glue pouring movable mechanism 310 drives the high-pressure foaming pouring system 320 to move. The moving direction of the glue pouring movable mechanism 310 is parallel to the conveying direction of the conveying device 500. In this embodiment, the moving direction of the glue pouring movable mechanism 310 is horizontal movement. The glue pouring movable mechanism 310 is conventional technology and can be a servo motor screw module or other structure to achieve this function. The specific structure will not be described in detail. An angle adjustment mechanism can also be set on the glue pouring movable mechanism 310, and the high-pressure foaming pouring system 320 is set on the angle adjustment mechanism.

[0114] In this embodiment, the high-pressure foaming and perfusion system 320 sprays out the A and B components of the two-component polyurethane foam glue at a pressure of 14-15 MPa, completes mixing in the mixing chamber, and injects the foam glue into the high-speed rotating tire at a speed of 100g / s-600g / s. The glue filling time of the high-pressure foaming and perfusion system 320 is between 1-3s, and the glue outlet of the high-pressure foaming and perfusion system 320 is always perpendicular to the horizontal plane.

[0115] During operation, the second clamping member 231 clamps the tire on the conveying device 500, and the second positioning member 232 is located below the tire to position the tire. The second driving mechanism 233 drives the second positioning member 232 to move upward, and at the same time, the second clamping member 231 is released. After the second positioning member 232 moves upward into position, the hydraulic clamping chuck assembly 210 clamps and fixes the tire through the automatic centering hydraulic chuck and rotates it to a horizontal setting until the center axis of the tire is horizontally set. The rotating motor 22 drives the hydraulic clamping chuck assembly 210 to rotate, thereby driving the tire to rotate around its center axis. The glue pouring moving mechanism 310 drives the high-pressure foaming pouring system 320 to move until the glue outlet of the high-pressure foaming pouring system 320 is perpendicular to the inner wall surface of the tire. The high-pressure foaming pouring system 320 performs the glue pouring operation. After a certain period of time, the swing motor 222 drives the tire to swing a certain angle to ensure that the foam glue is evenly injected into the inner wall surface of the tire, and the foam glue is evenly formed on the inner wall surface of the tire by centrifugal force.

[0116] This embodiment provides a swing motor to rotate the tire at a certain angle, thereby ensuring that the foamed rubber is molded to a uniform thickness on the inner wall surface of the tire, thereby avoiding the situation where the foamed rubber is thick in the middle and thin on both sides.

[0117] In this embodiment, the glue thickness detection device 400 includes a 3D detection camera assembly 410, a second tire lifting, positioning, and rotating assembly 420, and a fourth bracket 430. After the second tire lifting, positioning, and rotating assembly 420 secures the tire, it lifts the tire off the conveyor 500 and rotates it at a constant speed. The 3D detection camera assembly 410 detects the thickness of the noise reduction glue material inside the tire to ensure product quality.

[0118] Specifically, the second tire lifting, positioning, and rotating assembly 420 includes a third clamping member 421, which is mounted on the conveyor 500 and moves horizontally to clamp the tire; a third positioning member 422, which is mounted on the conveyor 500 and moves vertically to position the tire; and a third driving mechanism 423, which drives the third positioning member 422 to move vertically and rotate at a constant speed. This second tire lifting, positioning, and rotating assembly 420 is conventional technology, and its detailed structure is not further described.

[0119] A fourth bracket 430 is positioned above the conveying device 500. A 3D inspection camera assembly 410 is mounted on the fourth bracket 430 for vertical movement. The 3D inspection camera assembly 410 is positioned above the third positioning member 422. A power mechanism may also be included to drive the 3D inspection camera assembly 410 vertically. The 3D inspection camera assembly 410 performs three-dimensional inspection of the thickness of the noise reduction glue material inside the tire.

[0120] During operation, the third clamping member 421 clamps the tire on the conveying device 500, the third positioning member 422 is located under the tire to position the tire, and the third driving mechanism 423 drives the third positioning member 422 to move upward. At the same time, the third clamping member 421 is released. After the third positioning member 422 moves upward into position, the third driving mechanism 423 drives the third positioning member 422 to drive the tire to rotate along the central axis of the tire. The three-dimensional detection camera assembly 410 is located directly above the third positioning member 422, and the upper and lower positions are adjusted until the three-dimensional detection camera assembly 410 is facing the inner wall surface of the tire. The three-dimensional detection camera assembly 410 performs three-dimensional detection on the thickness of the noise reduction glue material inside the rotating tire.

[0121] In this embodiment, the laser ablation device 600 includes a second smoke and dust removal assembly 610, a laser array lens ablation assembly 620, a third tire lifting, positioning, and rotation assembly 630, and a fifth bracket 640. After the third tire lifting, positioning, and rotation assembly 630 secures the tire, it lifts the tire off the conveyor 500 and rotates it at a constant speed. The laser array lens ablation assembly 620 uses laser light to ablate the noise-reducing glue material inside the tire, and the second smoke and dust removal assembly 610 promptly removes the smoke and particulate matter generated during laser cleaning.

[0122] Specifically, the third tire lifting, positioning, and rotating assembly 630 includes a fourth clamping member 631, which is mounted on the conveyor 500 and moves horizontally to clamp the tire; a fourth positioning member 632, which is mounted on the conveyor 500 and moves vertically to position the tire; and a fourth driving mechanism 633, which drives the fourth positioning member 632 to move vertically and rotate at a constant speed. The third tire lifting, positioning, and rotating assembly 630 utilizes conventional technology, and its detailed structure is not further described.

[0123] The fifth bracket 640 is positioned above the conveying device 500, the second smoke and dust removal assembly 610 is positioned on the fifth bracket 640, and the laser array mirror ablation assembly 620 is positioned on the fifth bracket 640 for vertical movement. The laser array mirror ablation assembly 620 is positioned above the fourth positioning member 632. A power mechanism may also be included to drive the laser array mirror ablation assembly 620 up and down. The laser ablation device 600 uses a high-power laser machine in conjunction with a uniformly rotating tire to ablate the surface of the noise-reducing glue material inside the tire, creating specific patterns and increasing the surface friction of the noise-reducing glue material. In this embodiment, the laser ablation power is between 500W and 2000W.

[0124] During operation, the fourth clamping member 631 clamps the tire on the conveying device 500, the fourth positioning member 632 is located under the tire to position the tire, the fourth driving mechanism 633 drives the fourth positioning member 632 to move upward, and at the same time the fourth clamping member 631 is released. After the fourth positioning member 632 moves upward into position, the fourth driving mechanism 633 drives the fourth positioning member 632 to drive the tire to rotate along the central axis of the tire. The laser array mirror ablation assembly 620 is located directly above the fourth positioning member 632, and the upper and lower positions are adjusted until the laser array mirror ablation assembly 620 is facing the inner wall surface of the tire. The laser array mirror ablation assembly 620 performs laser ablation on the rotating tire, and the second smoke removal and dust removal assembly 610 promptly absorbs the smoke and particulate matter generated during laser cleaning and discharges them out of the production equipment.

[0125] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0126] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A molding process for tire internal noise reduction glue material, characterized in that: The steps include: S1. Laser cleaning the inner wall surface of a tire rotating at a constant speed; S2, high-speed rotation of the laser-cleaned tire; S3. Use high-pressure foaming technology to pour foam glue onto the inner wall of the rotating tire to complete the formation of the noise reduction glue material inside the tire; S4. Perform three-dimensional detection of the thickness of the noise reduction glue material inside the tire; Wherein, the rotation speed of the tire in step S2 is between 0-1000 rpm; In step S3, the foam glue pouring time is between 1-3 seconds, and the pouring speed is between 100-600g / s.

2. The molding process of tire internal noise reduction glue material according to claim 1, characterized in that: In step S2, the rotation speed of the tire is between 400-600 rpm.

3. The molding process of tire internal noise reduction glue material according to claim 1, characterized in that: In step S2, the tire is clamped and fixed using a hydraulic clamping chuck assembly, and the tire is rotated at high speed. The clamping force of the hydraulic clamping chuck assembly ranges from 10N to 100N.

4. The molding process of tire internal noise reduction glue material according to claim 2, characterized in that: The clamping force range of the hydraulic clamping chuck assembly is between 10-20N.

5. The molding process of tire internal noise reduction glue material according to claim 1, characterized in that: In step S3, after the foam glue is poured onto the inner wall of the rotating tire, the tire is rotated for 10-30 seconds to complete the molding of the noise reduction glue material inside the tire.

6. The molding process of tire internal noise reduction glue material according to claim 1, characterized in that: In step S3, the glue outlet of the foam glue is always perpendicular to the inner wall surface of the tire, and the glue outlet of the foam glue is 25-50 mm away from the inner wall surface of the tire.

7. The molding process of tire internal noise reduction glue material according to claim 1, characterized in that: In step S1, the laser power is between 500W and 2000W. After laser cleaning, the surface tension of the inner wall of the tire is greater than 38 dyne / cm.

8. The molding process of tire internal noise reduction glue material according to claim 1, characterized in that: In step S4, a three-dimensional camera is used to perform three-dimensional detection on the thickness of the noise reduction glue material inside the tire.

9. The molding process of tire internal noise reduction glue material according to claim 1, characterized in that: The molding process further includes step S5, laser ablation of the surface of the noise reduction glue material inside the tire.

10. The molding process of tire internal noise reduction glue material according to claim 9, characterized in that: In step S5, the ablation power of the laser is between 500W and 2000W.

Images