Rubber coating device for tire mute cotton and rubber coating process of rubber coating device

Abstract

The invention discloses a rubber coating device for tire mute cotton and a rubber coating process of the rubber coating device, and relates to the field of tire mute cotton processing, the rubber coating device comprises a bottom plate, a supporting plate, a rubber material box and a motor, the supporting plate is fixed on the bottom plate, and the rubber material box is fixed on the supporting plate. According to the rubber coating device for the tire mute cotton and the rubber coating process of the rubber coating device, the tire body rotates through the motor and the rolling shaft, and the pump machine and the rubber outlet head move front and back in order under the action of the driving mechanism, so that snake-shaped automatic rubber coating operation can be carried out on the inner wall of the tire body, and when the pump machine and the rubber outlet head move, the rubber coating efficiency is improved. Through contact between the limiting rod and the side wall of the tire body and cooperation of the sliding effect between the movable block and the guide rod, automatic positioning of the pump machine and the glue outlet head can be achieved, it is guaranteed that the pump machine and the glue outlet head are located on the inner side of the tire body all the time, so that the device automatically adapts to rubber coating operation of tires with different widths, and compared with traditional manual rubber coating, the efficiency is higher, and the labor intensity is lowered. And the actual production requirements can be better met.

Description

Technical Field

[0001] The present invention relates to the technical field of tire silent foam processing, in particular to a tire silent foam coating device and a coating process thereof. Background Art

[0002] Cars are one of the most commonly used means of transportation today. During vehicle use, tire noise is one of the main sources of vehicle noise. To improve the driving experience for drivers and passengers, silent tires have become a new research and development direction for tire manufacturers. To effectively reduce tire noise, the industry generally adopts the technical solution of attaching sound-absorbing materials to the inner surface of the tire to reduce tire noise. In the actual production process of silent sponge tires, at this stage, the inner wall of the tire is mainly covered with glue manually, and then the silent sponge is pasted. The manual covering operation is troublesome and the work efficiency is low. Therefore, in response to the above problems, a tire silent sponge covering device and its covering process are designed to better meet the actual use needs. Summary of the Invention

[0003] The purpose of the present invention is to provide a tire silent foam coating device and a coating process thereof to solve the problems raised in the above background technology.

[0004] The wheelbase is shortened and the shifting mechanism is shortened to a speed of 1000 times, the shifting mechanism being increased in speed with the acceleration of the engine tumbling block, the shifting mechanism then being increased in speed with the acceleration of the engine tumbling block, the shifting mechanism then being increased in speed with the acceleration of the engine tumbling block. The cam is provided with a first spring which is fixed on the movable block, and the lower end surface of the movable block is provided with a pump which is connected to the rubber material box through a guide tube. The pump and the rubber discharging head are fixed to each other, and a glue port sealing mechanism is installed on the side of the rubber discharging head. A limit rod is also fixed on the movable block symmetrically front and back, and a rollable ball is provided on the lower end surface of the limit rod, and the limit rod contacts with the tire body for rolling. The limit rod contacts with the side wall of the tire body to achieve positioning, and the height of the rubber discharging head is adjusted by the cylinder so that the ball on the lower end surface of the limit rod contacts with the bottom surface of the tire body to achieve the height positioning of the rubber discharging head. The rotation of the roller can drive the tire body to rotate, and the tire body drives the movable block, the pump and the rubber discharging head to move back and forth in an orderly manner, thereby realizing a serpentine rubber coating effect, and during the rubber coating process, the automatic positioning of the pump and the rubber discharging head is realized by the limit rod to adapt to the rubber coating requirements of tire bodies of different widths.

[0005] Preferably, the driving mechanism includes a worm, a worm wheel, a cam shaft, a slide rod, a sliding rod and a sleeve rod. The worm bearing is connected to the support plate, and the worm and the roller are fixedly connected, and the worm and the worm wheel cooperate for transmission. At the same time, the worm wheel bearing is connected to the base plate. The normal operation of the device can be guaranteed through the transmission action between the worm and the worm wheel.

[0006] Preferably, a cam is fixed on the worm wheel, and the cam is nested in the slide rod for sliding. When the worm wheel drives the cam to rotate, the sliding action between the cam and the slide rod can provide a basic force for the forward and backward movement of the slide rod.

[0007] Preferably, a sliding rod is fixed on the slide rod, and the sliding rod and the sleeve rod are slidably connected, and the sleeve rod is fixed on the movable frame. Through the sliding action between the sliding rod and the sleeve rod, it can be ensured that when the movable frame moves, the relative position between the cam shaft and the slide rod remains unchanged, thereby ensuring the normal operation of the device.

[0008] Preferably, there are two rollers symmetrically distributed about the center line of the base plate, and the two rollers are connected to each other by belts and pulleys, and the surface of the rollers has a rough structure. Through the action of the rollers, a basic force can be provided for the rotation of the tire body, and the rough structure of the roller surface can ensure the friction between the rollers and the tire body, thereby ensuring the normal rotation of the tire body.

[0009] Preferably, the limiting mechanism includes an adjusting plate and a limiting roller, the adjusting plate is rotatably connected to the bottom plate, and a torsion spring is also connected between the adjusting plate and the bottom plate, and the limiting roller is connected to the bearing on the adjusting plate, and the limiting roller is a concave structure. The limiting roller contacts and rolls with the tire body, and the distance between the two limiting rollers can be adjusted by the rotation of the adjusting plate and the elastic action of the torsion spring to adapt to the limitation of tire bodies of different diameters. The concave structure of the limiting roller can ensure that the tire body remains in the center position, thereby ensuring the normal progress of subsequent rubber coating.

[0010] Preferably, the glue outlet sealing mechanism includes a sealing plate, a vertical rod, a support rod, a movable rod, a second spring and a connecting rod. The sealing plate is in contact with the glue outlet of the glue discharging head, and a vertical rod is fixed on the sealing plate. The vertical rod and the support rod are slidably connected, and the support rod is fixed on the glue discharging head. The glue outlet of the glue discharging head can be sealed by the action of the sealing plate, which can avoid subsequent glue dripping and prevent the glue at the glue outlet of the glue discharging head from drying out and causing blockage. When the sealing plate moves, the sliding guiding action between the vertical rod and the support rod can ensure the stability of the movement of the sealing plate.

[0011] Preferably, a movable rod is slidably connected to the support rod, and the lower end surface of the movable rod is lower than the lower end surface of the limiting rod, and a second spring is fixed between the movable rod and the support rod. The elastic action of the second spring can provide a basic force for the automatic reset of the limiting rod.

[0012] Preferably, the movable rod is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the sealing plate. When the limit rod moves, the transmission action of the connecting rod can provide a basic force for the movement of the sealing plate.

[0013] A tire silent foam coating process, the specific steps are as follows: Step 1: Install and place the tire body. Through the gravity of the tire body, the rotation of the adjustment plate and the elasticity of the torsion spring, the tire body is brought into contact with the roller and the limiting roller to achieve positioning. Step 2: Adjust the height of the pump and the dispensing head by controlling the extension of the air cylinder until the ball bearing on the lower end of the limit rod contacts the inner wall of the tire body, thereby achieving the height positioning of the pump and the dispensing head. At this time, the sealing plate is separated from the dispensing port of the dispensing head, releasing the sealing effect; Step 3: The device is operated by the motor, and the rotation of the roller makes the tire body rotate slowly and uniformly, and then the driving mechanism makes the pump and the glue head move back and forth in an orderly manner, thereby realizing the serpentine glue coating operation inside the tire body. In the process of the pump and the glue head moving back and forth, the front and rear position is limited by the contact between the limit rod and the side wall of the tire body, so as to adapt to the glue coating operation of tire bodies of different widths.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The tire silent sponge gluing device and its gluing process rotate the tire body through a motor and roller, and cooperate with the action of the drive mechanism to make the pump and the glue dispensing head move back and forth in an orderly manner, thereby performing a serpentine automatic gluing operation on the inner wall of the tire body. When the pump and the glue dispensing head move, the limit rod contacts the side wall of the tire body, and the sliding action between the movable block and the guide rod can realize the automatic positioning of the pump and the glue dispensing head, ensuring that the pump and the glue dispensing head are always located inside the tire body, so as to automatically adapt to the gluing operation of tires of different widths. Compared with traditional manual gluing, it is more efficient and can better meet actual production needs. 2. The tire silent foam rubber coating device and its rubber coating process, through an elastic automatic limiting mechanism, cooperates with the tire's own gravity to adapt to different tire bodies for limiting, thereby improving the adaptability of the device. Specifically, when the tire body is placed, when the tire body contacts the limiting roller, the tire body's gravity, the rotation of the adjustment plate and the elastic action of the torsion spring can automatically adjust the position of the limiting roller until the tire body contacts the roller, thus achieving automatic positioning. 3. The rubber coating device and rubber coating process of the tire silent sponge adopt a linked self-sealing mechanism, which can not only seal the rubber outlet of the rubber outlet head after the rubber coating is completed, but also prevent the rubber outlet of the rubber outlet head from drying out and causing blockage through sealing, thereby affecting the subsequent normal rubber coating operation. Specifically, the height of the rubber outlet head can be adjusted by the cylinder. When the movable rod is in contact with the tire body and moves under force, the sealing plate can be moved and separated from the rubber outlet on the rubber outlet head in conjunction with the transmission action of the connecting rod, thereby facilitating the rubber coating operation. After the rubber coating is completed, the sealing plate can be automatically reset in conjunction with the elastic action of the second spring to achieve the sealing effect of the rubber outlet on the rubber outlet head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device of the present invention; Figure 2 This is a schematic side view of the overall three-dimensional structure of the device of the present invention; Figure 3It is a schematic diagram of the three-dimensional structure of the driving mechanism of the present invention; Figure 4 This is a schematic diagram of the exploded three-dimensional structure of the driving mechanism of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the glue coating mechanism of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the glue port sealing mechanism of the present invention.

[0016] In the figure: 1. bottom plate; 2. support plate; 3. glue box; 4. motor; 5. driving mechanism; 501. worm; 502. worm gear; 503. cam; 504. slide rod; 505. slide rod; 506. sleeve rod; 6. roller; 7. limiting mechanism; 701. adjustment plate; 702. limiting roller; 8. tire body; 9. cylinder; 10. cross bar; 11. fixing rod; 12. glue coating mechanism; 1201. movable frame; 1202. guide rod; 1203. movable block; 1204. first spring; 1205. pump; 1206. glue discharge head; 1207. limiting rod; 13. glue outlet sealing mechanism; 1301. sealing plate; 1302. vertical rod; 1303. support rod; 1304. movable rod; 1305. second spring; 1306. connecting rod. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1-6 The present invention provides a technical solution: a rubber coating device for tire silent cotton and a rubber coating process thereof, comprising a base plate 1, a support plate 2, a rubber box 3 and a motor 4. The base plate 1 is fixed with a support plate 2, the support plate 2 is fixed with a rubber box 3, the rear end surface of the support plate 2 is also fixed with a motor 4, a bearing on the support plate 2 is connected to a driving mechanism 5 driven by the motor 4, a bearing on the base plate 1 is also connected to a roller 6 driven by the motor 4, and the roller 6 is in contact with the tire body 8, a limiting mechanism 7 is also installed on the base plate 1, the driving mechanism 5 and the rubber coating mechanism 12 are connected to each other so that the rubber coating mechanism 12 moves forward and backward, a cylinder 9 is fixed on the support plate 2, the output end of the cylinder 9 is fixed on the cross bar 10, a fixing rod 11 is fixed on the front side of the cross bar 10, and the rubber coating mechanism 12 is slidably connected to the fixing rod 11.

[0019] Two rollers 6 are symmetrically distributed about the center line of the base plate 1. The two rollers 6 are connected to each other by a belt and a pulley, and the surface of the rollers 6 has a rough structure. The limiting mechanism 7 includes an adjustment plate 701 and a limiting roller 702. The adjustment plate 701 is rotatably connected to the base plate 1. A torsion spring is also connected between the adjustment plate 701 and the base plate 1. The limiting roller 702 is connected to a bearing on the adjustment plate 701. At the same time, the limiting roller 702 has a concave structure and contacts the tire body 8 with rolling contact. When using the tire rubber coating device using the tire silent foam, Figures 1-6 As shown, first, the tire body 8 that needs to be coated with glue is installed, and the tire body 8 is clamped by a robot until it contacts the limiting roller 702, and the robot is slowly released. At this time, under the action of the gravity of the tire body 8, pressure is generated on the limiting roller 702. With the rotation action between the adjustment plate 701 and the bottom plate 1 and the elastic action of the torsion spring between the adjustment plate 701 and the bottom plate 1, the position of the limiting roller 702 can be automatically adjusted to adapt to the installation of tire bodies 8 of different sizes, until the tire body 8 contacts the roller 6. At this time, the concave structure of the limiting roller 702 can make the tire body 8 at the axial center position of the limiting roller 702, and the inner lower end surface of the tire body 8 is just located under the glue discharge head 1206, thereby completing the installation of the tire body 8; The glue coating mechanism 12 includes a movable frame 1201, a guide rod 1202, a movable block 1203, a first spring 1204, a pump 1205, a glue discharge head 1206 and a limit rod 1207. The movable frame 1201 is slidably connected to the fixed rod 11. The guide rod 1202 is fixed on the movable frame 1201. The movable block 1203 is slidably connected to the guide rod 1202. The first spring 1204 is fixed between the movable block 1203 and the movable frame 1201. The pump 1205 is fixed to the lower end surface of the movable block 1203. The pump 1205 is connected to the glue box 3 through a conduit. The pump 1205 and the glue discharge head 1206 are fixed to each other. The glue outlet sealing mechanism 13 is installed on the side of the glue discharge head 1206. The limit rod 1207 is also symmetrically fixed to the movable block 1203. , and a rolling ball is provided on the lower end surface of the limiting rod 1207, and the limiting rod 1207 contacts the tire body 8 for rolling, and the limiting rod 1207 contacts the side wall of the tire body 8 to achieve positioning, and the height of the glue head 1206 is adjusted by the cylinder 9, so that the ball on the lower end surface of the limiting rod 1207 contacts the bottom surface of the tire body 8 to achieve the height positioning of the glue head 1206, and the rotation of the roller 6 can drive the tire body 8 to rotate, and the tire body 8 drives the movable block 1203, the pump 1205 and the glue head 1206 to move back and forth in an orderly manner, thereby achieving a serpentine glue coating effect, and during the glue coating process, the automatic positioning of the pump 1205 and the glue head 1206 is achieved by the limiting rod 1207 to meet the glue coating requirements of tire bodies 8 of different widths; The glue outlet sealing mechanism 13 includes a sealing plate 1301, a vertical rod 1302, a support rod 1303, a movable rod 1304, a second spring 1305 and a connecting rod 1306. The sealing plate 1301 contacts the glue outlet of the glue discharging head 1206, and the vertical rod 1302 is fixed on the sealing plate 1301. The vertical rod 1302 and the support rod 1303 are slidably connected. At the same time, the support rod 1303 is fixed on the glue discharging head 1206; the movable rod 1304 is slidably connected to the support rod 1303, and the lower end surface of the movable rod 1304 is lower than the lower end surface of the limiting rod 1207, and a second spring 1305 is further fixed between the movable rod 1304 and the support rod 1303; one end of the movable rod 1304 is rotatably connected to the connecting rod 1306, and the other end of the connecting rod 1306 is rotatably connected to the sealing plate 1301; After the tire body 8 is installed, Figures 1-6 As shown, at this time, the control cylinder 9 extends, thereby driving the cross bar 10, the fixed rod 11, the glue coating mechanism 12 and the glue mouth sealing mechanism 13 to move downward. During the downward movement of the glue mouth sealing mechanism 13, when the movable rod 1304 contacts the inner wall of the tire body 8, the cylinder 9 continues to extend, causing the movable rod 1304 to slide upward relative to the support rod 1303. At this time, the second spring 1305 is forced to shrink. When the movable rod 1304 slides upward relative to the support rod 1303, the transmission effect of the connecting rod 1306 is cooperated to make the sealing plate 1301 move. The sliding guiding effect between the vertical rod 1302 and the support rod 1303 can ensure the stability of the movement of the sealing plate 1301. Until the sealing plate 1301 is separated from the glue outlet of the glue head 1206, the sealing effect of the glue outlet of the glue head 1206 is released, so that the subsequent glue coating can proceed normally. At this time, the rolling ball on the lower end surface of the limit rod 1207 just contacts the inner wall of the tire body 8, realizing the positioning effect of the glue head 1206. When the glue coating is completed, according to the above principle, the cylinder 9 contracts, and the elastic effect of the second spring 1305 is coordinated to make the sealing plate 1301 automatically reset and seal with the glue outlet of the glue head 1206, which can prevent the glue from dripping and prevent the glue from drying out and causing blockage at the glue outlet of the glue head 1206, which affects the subsequent normal glue coating operation. The driving mechanism 5 includes a worm 501, a worm wheel 502, a protruding shaft 503, a sliding groove rod 504, a sliding rod 505 and a sleeve rod 506. The worm 501 is connected to the support plate 2 by a bearing, and the worm 501 and the roller 6 are fixedly connected. The worm 501 cooperates with the worm wheel 502 to transmit the power. At the same time, the worm wheel 502 is connected to the base plate 1 by a bearing. The worm wheel 502 is also fixed with a protruding shaft 503, which is nested in the sliding groove rod 504 for sliding. The sliding groove rod 504 is fixed with a sliding rod 505, and the sliding rod 505 and the sleeve rod 506 are slidably connected, and the sleeve rod 506 is fixed to the movable frame 1201. When the cylinder 9 extends and drives the rubber coating mechanism 12 to move downward, Figures 1-6 As shown, with the sliding action between the slide bar 505 and the sleeve bar 506, the relative position of the convex shaft 503 and the sliding groove rod 504 can be guaranteed to remain unchanged. When coating with glue, the motor 4 drives the worm 501 and the roller 6 to rotate at a uniform and slow speed, so that the tire body 8 is forced to rotate. At this time, by starting the pump 1205, the glue in the glue box 3 can be transported to the glue discharge head 1206 for spraying, thereby realizing the glue coating effect on the inner wall of the tire body 8. When the worm 501 rotates, the transmission action between the worm 501 and the worm gear 502 causes the worm gear 502 and the convex shaft 503 to rotate, and then with the sliding action between the convex shaft 503 and the sliding groove rod 504, the slide bar 505, the sleeve bar 506 and the movable frame 1201 can move back and forth in an orderly manner. With the sliding guide action between the movable frame 1201 and the fixed rod 11, the stability of the movable frame 1201 movement can be guaranteed. When the movable frame 1201 moves, The movable block 1203, the pump 1205 and the glue discharging head 1206 are driven step by step to move back and forth in an orderly manner. In conjunction with the rotation of the tire body 8, the automatic glue coating effect of the serpentine route can be realized. When the pump 1205 and the glue discharging head 1206 move back and forth in an orderly manner, the limit rod 1207 is synchronously driven to move back and forth in an orderly manner. When the limit rod 1207 contacts the side of the tire body 8, the positioning of the pump 1205 and the glue discharging head 1206 can be realized. In conjunction with the sliding action between the movable block 1203 and the guide rod 1202, when the movable frame 1201 continues to move, the position of the pump 1205 and the glue discharging head 1206 is guaranteed to remain unchanged, that is, the pump 1205 and the glue discharging head 1206 are always located on the inner side of the tire body 8 for glue coating, thereby adapting to tire bodies 8 of different widths for glue coating operations without the need for tedious manual adjustment, thereby improving the adaptability of the device. This is the working principle of the tire silent sponge glue coating device.

[0020] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tire silent foam coating device, comprising a base plate (1), a support plate (2), a rubber material box (3) and a motor (4), wherein the base plate (1) is fixed with the support plate (2), the rubber material box (3) is fixed with the support plate (2), and the rear end surface of the support plate (2) is also fixed with the motor (4), characterized in that: The support plate (2) is connected to a driving mechanism (5) driven by a motor (4) via a bearing, the base plate (1) is also connected to a roller (6) driven by the motor (4), and the roller (6) is in contact with the tire body (8), and a limiting mechanism (7) is also installed on the base plate (1). The driving mechanism (5) and the rubber coating mechanism (12) are connected to each other so that the rubber coating mechanism (12) moves forward and backward. A cylinder (9) is fixed on the support plate (2), and the output end of the cylinder (9) is fixed to the cross bar (10). The front side of the cross bar (10) is fixed with a fixed rod (11), and the fixed rod (11) is slidably connected with a glue coating mechanism (12), and the glue coating mechanism (12) includes a movable frame (1201), a guide rod (1202), a movable block (1203), a first spring (1204), a pump (1205), a glue discharge head (1206) and a limit rod (1207). The movable frame (1201) and the fixed rod (11) are slidably connected. The guide rod (1202) is fixed on the movable frame (1201). 202), a movable block (1203) is slidably connected to the guide rod (1202), a first spring (1204) is fixed between the movable block (1203) and the movable frame (1201), a pump (1205) is fixed to the lower end surface of the movable block (1203), the pump (1205) is connected to the glue box (3) through a conduit, the pump (1205) and the glue head (1206) are fixed to each other, and a glue outlet sealing mechanism (13) is installed on the side of the glue head (1206), the movable block (1203) is fixed to the lower end surface of the movable block (1203), the pump (1205) is connected to the glue box (3) through a conduit, the pump (1205) and the glue head (1206) are fixed to each other, and a glue outlet sealing mechanism (13) is installed on the side of the glue head (1206). A limiting rod (1207) is also fixed symmetrically on the movable block (1203), and a rolling ball is provided on the lower end surface of the limiting rod (1207). The limiting rod (1207) contacts the tire body (8) for rolling. The limiting rod (1207) contacts the side wall of the tire body (8) to achieve positioning. The height of the glue dispensing head (1206) is adjusted by the cylinder (9) so that the ball on the lower end surface of the limiting rod (1207) contacts the bottom surface of the tire body (8), thereby achieving height positioning of the glue dispensing head (1206).

2. The tire silent foam rubber coating device according to claim 1, characterized in that: The driving mechanism (5) comprises a worm (501), a worm wheel (502), a cam shaft (503), a sliding slot rod (504), a sliding rod (505) and a sleeve rod (506); the bearing of the worm (501) is connected to the support plate (2); the worm (501) and the roller (6) are fixedly connected; the worm (501) and the worm wheel (502) cooperate to transmit the power; and the bearing of the worm wheel (502) is connected to the base plate (1).

3. The tire silent foam rubber coating device according to claim 2, characterized in that: A convex shaft (503) is also fixed on the worm wheel (502), and the convex shaft (503) is nested in the sliding groove rod (504) for sliding.

4. The tire silent foam rubber coating device according to claim 2, characterized in that: A sliding rod (505) is fixed on the chute rod (504), and the sliding rod (505) is slidably connected to the sleeve rod (506), and the sleeve rod (506) is fixed on the movable frame (1201).

5. The tire silent foam rubber coating device according to claim 1, characterized in that: There are two rollers (6) symmetrically distributed about the center line of the bottom plate (1), and the two rollers (6) are connected to each other via a belt and a pulley, and the surface of the rollers (6) is a rough structure.

6. The tire silent foam rubber coating device according to claim 1, characterized in that: The limiting mechanism (7) comprises an adjusting plate (701) and a limiting roller (702), wherein the adjusting plate (701) is rotatably connected to the bottom plate (1), and a torsion spring is connected between the adjusting plate (701) and the bottom plate (1), and a bearing on the adjusting plate (701) is connected to the limiting roller (702), and the limiting roller (702) is a concave structure, and the limiting roller (702) contacts and rolls with the tire body (8).

7. The tire silent foam rubber coating device according to claim 1, characterized in that: The glue outlet sealing mechanism (13) comprises a sealing plate (1301), a vertical rod (1302), a support rod (1303), a movable rod (1304), a second spring (1305) and a connecting rod (1306). The sealing plate (1301) contacts the glue outlet of the glue outlet head (1206), and the vertical rod (1302) is fixed on the sealing plate (1301). The vertical rod (1302) and the support rod (1303) are slidably connected, and the support rod (1303) is fixed on the glue outlet head (1206).

8. The tire silent foam rubber coating device according to claim 7, characterized in that: The support rod (1303) is slidably connected to a movable rod (1304), and the lower end surface of the movable rod (1304) is lower than the lower end surface of the limiting rod (1207), and a second spring (1305) is fixed between the movable rod (1304) and the support rod (1303).

9. The tire silent foam rubber coating device according to claim 7, characterized in that: The movable rod (1304) is rotatably connected to one end of the connecting rod (1306), and the other end of the connecting rod (1306) is rotatably connected to the sealing plate (1301).

10. A tire silent sponge coating process, applied to the tire silent sponge coating device according to claim 9, characterized in that: The specific steps are as follows: Step 1: The tire body (8) is installed and placed, and the tire body (8) is brought into contact with the roller (6) and the limiting roller (702) through the gravity of the tire body (8), the rotation of the adjustment plate (701) and the elasticity of the torsion spring to achieve positioning; Step 2: The height of the pump (1205) and the dispensing head (1206) is adjusted by controlling the extension of the air cylinder (9) until the ball bearing on the lower end surface of the limiting rod (1207) contacts the inner wall of the tire body (8), thereby achieving the height positioning of the pump (1205) and the dispensing head (1206). At this time, the sealing plate (1301) is separated from the dispensing port of the dispensing head (1206), and the sealing effect is released; Step 3: The device is operated by the motor (4), and the rotation of the roller (6) is coordinated to make the tire body (8) rotate slowly and uniformly, and then the action of the driving mechanism (5) is coordinated to make the pump (1205) and the glue head (1206) move back and forth in an orderly manner, thereby realizing the serpentine glue coating operation inside the tire body (8), and in the process of the pump (1205) and the glue head (1206) moving back and forth, the front and rear position is limited by the contact between the limit rod (1207) and the side wall of the tire body (8), so as to adapt to the glue coating operation of tire bodies (8) of different widths.

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