Tire inner wall laser cleaning machine and cleaning method

Abstract

The invention relates to a tire inner wall laser cleaning machine and a cleaning method. The tire inner wall laser cleaning machine comprises a positioning mechanism, a conveying mechanism, a cleaning mechanism and a flaring mechanism, and the positioning mechanism is used for clamping, jacking and rotating a tire; the conveying mechanism is used for conveying the uncleaned tires into the positioning mechanism or moving the cleaned tires out of the positioning mechanism; the cleaning mechanism is installed above the positioning mechanism, the two flaring mechanisms are installed on the two sides of the laser head, each flaring mechanism comprises a flaring driving piece, the flaring driving pieces are parallel finger air cylinders, flaring idler wheels are installed on two fingers of each parallel finger air cylinder respectively, and the flaring idler wheels protrude out of the laser head. The flaring mechanism is mounted at the laser head, so that a tire seam allowance at the laser head can be expanded, a tire bead is prevented from shielding the laser head, the laser cleaning quality is ensured, laser cleaning of tires with smaller sizes can be realized, and the application range of the equipment is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cleaning, and particularly relates to a laser cleaning machine for the inner wall of a tire and a cleaning method therefor. Background Art

[0002] When manufacturing silent tires and self-repairing tires, it is necessary to apply sound-absorbing cotton or spray self-sealing glue on the inner wall of the tire. To prevent the release agent or dust applied in the previous vulcanization process from affecting the coating quality of the sound-absorbing material or self-sealing material, and thus affecting the overall sound-absorbing effect or self-repairing effect of the finished tire, it is necessary to clean the inner wall of the tire.

[0003] Laser cleaning vaporizes or sublimes the substance to be removed through a laser, which has the advantages of being environmentally friendly and not damaging the substrate, and is widely used in the cleaning operation of the inner wall of the tire. However, when the bead distance of the tire is small, the bead will block the inner wall area of the tire, making some areas of the inner wall of the tire unable to be cleaned, affecting the attachment effect of the sound-absorbing material or self-repairing material.

[0004] Based on the above technical problems, the present application proposes a laser cleaning machine for the inner wall of a tire and a cleaning method therefor. Summary of the Invention

[0005] The purpose of the present invention is to provide a laser cleaning machine for the inner wall of a tire and a cleaning method therefor to solve the technical problems mentioned in the background art. The purpose of the present invention is achieved through the following technical solutions: A laser cleaning machine for the inner wall of a tire includes a positioning mechanism, a conveying mechanism, a cleaning mechanism, and a flaring mechanism. The positioning mechanism includes a lifting component, a rotating component is installed on the lifting component, a positioning component is installed on the rotating component, the positioning component includes a positioning driving member and a pair of positioning jigs, and the positioning driving member can drive the pair of positioning jigs to approach or move away from each other synchronously along the Y direction; a clamping component is installed on the positioning jig, the clamping component includes a clamping telescopic member and a clamping block, and the clamping telescopic member can drive the clamping block to reciprocate along the radial direction of the tire; the conveying mechanism is installed on the periphery of the positioning mechanism, and the conveying mechanism is used to convey the unwashed tire into the positioning mechanism along the X direction, or convey the washed tire out of the positioning mechanism along the X direction; the cleaning mechanism is installed above the positioning mechanism, the cleaning mechanism includes a horizontal moving component, a vertical moving component, and a laser head, the vertical moving component is installed on the horizontal moving component, the laser head is installed at the lower end of the vertical moving component, and the laser head is connected to a laser emitting device; two flaring mechanisms are installed on both sides of the laser head, the flaring mechanism includes a flaring driving member, the flaring driving member is a parallel finger cylinder, and flaring rollers are respectively installed on the two fingers of the parallel finger cylinder, and the flaring rollers protrude from the laser head.

[0006] Furthermore, the positioning fixture includes a positioning plate, which is in an eight-shaped shape, with openings of the two positioning plates arranged opposite to each other, and positioning guide rollers are vertically installed at both ends of the positioning plate; the clamping assembly is installed in the middle of the positioning plate.

[0007] Furthermore, a positioning pressure ring is installed on the positioning guide roller, the outer edge of the lower end surface of the positioning pressure ring is provided with a chamfer, the circumferential surface of the positioning pressure ring is provided with a threaded hole, and a top screw is provided in the threaded hole.

[0008] Furthermore, the lifting assembly includes a lifting base, a lifting motor and a lifting platform. The lifting platform is installed on the lifting base through a synchronizer, and the lifting motor is transmission-connected to the synchronizer. The rotating assembly is a hollow rotating platform, and the hollow rotating platform is installed on the lifting platform.

[0009] Furthermore, the positioning drive component is a forward and reverse screw module, which is installed on the rotating component; a cross-shaped bearing platform is installed on the forward and reverse screw module, and a universal wheel is provided on the upper end surface of the bearing platform.

[0010] Furthermore, a dust extraction mechanism is installed on the cleaning mechanism, and the dust extraction mechanism is located on one side of the laser head. The dust extraction mechanism includes a dust extraction head and a dust extraction telescopic member, and the dust extraction telescopic member can drive the dust extraction head to reciprocate along an axial direction parallel to the laser head.

[0011] Furthermore, a pre-positioning mechanism is provided upstream of the conveying mechanism, and the pre-positioning mechanism includes a loading assembly and a centering assembly, and the loading assembly is a ball chain conveyor line; the centering assembly includes a centering swing arm and a centering drive member, and the two centering swing arms are rotatably installed on both sides of the ball chain conveyor line through vertical rotating shafts respectively, and a crank is provided at the lower end of the vertical rotating shaft. The centering drive member is connected to any crank, and a connecting rod is provided between the two cranks, and the connecting rod drives the two vertical rotating shafts to rotate synchronously and oppositely through the crank.

[0012] Furthermore, guard plates are arranged on both sides of the feeding assembly, and guide rollers are vertically arranged on the inner side of the guard plates and the inner side of the centering swing arm.

[0013] Furthermore, a code scanning mechanism is provided on the upper side of the feeding assembly, and the code scanning mechanism includes a code scanning bracket, a code scanning camera and a code scanning light source, and the code scanning camera and the code scanning light source are both installed on the code scanning bracket.

[0014] A cleaning method using any of the above tire inner wall laser cleaning machines comprises the following steps: Step S1, placing the tire on the conveying mechanism, the conveying mechanism conveys the tire to the positioning mechanism, after the positioning assembly completes the centering of the tire, the clamping assembly clamps and fixes the tire, and the lifting assembly lifts up to make the positioned and clamped tire rise; Step S2: The vertical movement component drives the flaring mechanism to descend, and the horizontal movement component operates to insert the flaring rollers of the flaring mechanism between the two bead lips of the tire; the flaring driving member drives the flaring rollers to move away from each other to flare the tire bead at the laser head. Step S3: The rotating component drives the tire to rotate, the laser emission device emits laser through the laser head to the inner wall of the tire for cleaning operation, and the flaring mechanism flares the tire at the laser head synchronously. Step S4: After the rotating component rotates 180°, the flaring driving member drives the flaring rollers to move closer to each other; the horizontal movement component operates to withdraw the flaring rollers of the flaring mechanism from between the two bead lips of the tire, and the vertical movement component drives the flaring mechanism to rise. Step S5: The lifting component descends, the clamping component and the positioning component are reset in sequence, and the conveying mechanism operates to remove the cleaned tire from the positioning mechanism.

[0015] The technical solution provided by the embodiment of the present application has at least the following technical effects or advantages: 1. By installing a flaring mechanism at the laser head, the tire bead at the laser head can be expanded, avoiding the blockage of the laser head by the bead, ensuring the quality of laser cleaning, and enabling laser cleaning of smaller-sized tires, thus expanding the applicable range of the equipment. 2. By setting a clamping component to clamp the tire, it can avoid the rotation of the tire and the positioning component during the cleaning process, resulting in cleaning dead corners, and ensuring the quality of tire cleaning. 3. By installing a positioning pressure ring above the positioning guide roller, the tire can be limited from the outer edge of the upper end face of the tire, avoiding the axial displacement of the tire during the cleaning process, and ensuring the cleaning quality of the tire. 4. By flaring a part of the tire with the flaring rollers, the force on the tire bead can be reduced, avoiding damage to the tire bead and ensuring the quality of the tire; at the same time, the flaring rollers can rotate with the tire, avoiding the influence of the flaring mechanism on the rotation of the tire and ensuring the quality of laser cleaning. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the laser cleaning machine according to the embodiment of the present application; Figure 2 It is a schematic structural diagram of the pre-positioning mechanism according to the embodiment of the present application; Figure 3 Schematic diagram of the component structure in the embodiment of the present application; Figure 4 Schematic diagram of the structure of the laser cleaning mainframe in the embodiment of the present application; Figure 5 Schematic diagram of the connection between the positioning mechanism and the conveying mechanism in the embodiment of the present application; Figure 6 Schematic diagram of the structure of the positioning mechanism in the embodiment of the present application; Figure 7 is Figure 6 partial enlarged view of; Figure 8 Schematic diagram of the structure of the cleaning mechanism and the flaring mechanism in the embodiment of the present application; Figure 9 Schematic diagram of the structure of the flaring mechanism in the embodiment of the present application; Figure 10 Schematic diagram of the structure of the dust extraction mechanism in the embodiment of the present application; Figure 11 Schematic diagram of the working principle in the embodiment of the present application.

[0018] Reference numerals: 1, loading component; 11, guard plate; 2, centering component; 21, centering swing arm; 22, centering driving part; 23, vertical rotating shaft; 24, crank; 25, connecting rod; 3, code scanning mechanism; 31, code scanning bracket; 32, code scanning camera; 33, code scanning light source; 4, dust extraction mechanism; 41, dust extraction bracket; 42, dust extraction head; 43, dust extraction telescopic part; 5, frame; 51, cross beam; 52, protective cover; 53, maintenance door; 54, lifting door; 55, precision filter; 56, control box; 57, three-color lamp; 6, positioning mechanism; 61, lifting component; 611, lifting base; 612, lifting motor; 613, lifting platform; 614, synchronizer; 62, rotating component; 63, positioning component; 631, positioning driving part; 632, positioning plate; 633, positioning guide roller; 634, positioning pressure ring; 64, clamping component; 641, clamping telescopic part; 642, clamping block; 65, bearing table; 7, conveying mechanism; 8, cleaning mechanism; 81, cleaning bracket; 82, horizontal moving component; 83, vertical moving component; 84, laser head; 9, flaring mechanism; 91, flaring driving part; 92, flaring roller. Detailed implementation manners

[0019] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present invention as follows.

[0020] Embodiment 1 As Figures 1-11A laser cleaning machine for the inner wall of a tire as shown includes a pre-positioning mechanism and a laser cleaning main unit. The pre-positioning mechanism is installed upstream of the laser cleaning main unit and is used for pre-positioning the tire.

[0021] As Figures 1-3 shown, the pre-positioning mechanism includes a loading component 1 and a centering component 2. The loading component 1 is a ball chain plate conveyor line, which is used to convey the tire into the laser cleaning main unit. Vertical guard plates 11 are installed on both sides of the ball chain plate conveyor line, and the guard plates 11 can prevent the tire from slipping off the loading component 1. The centering component 2 is installed on the ball chain plate conveyor line and is used for pre-positioning the tire. The ball chain plate conveyor line can reduce the friction between the tire and the loading component 1, avoid scratching on the tire surface, and ensure the appearance quality of the tire.

[0022] As Figure 3 shown, the centering component 2 includes centering swing arms 21 and a centering driving part 22. The two centering swing arms 21 are respectively rotatably installed on both sides of the ball chain plate conveyor line through vertical rotating shafts 23. A crank 24 is installed at the lower end of the vertical rotating shaft 23, and the extending directions of the two cranks 24 are opposite. The centering driving part 22 is a cylinder. One end of the centering driving part 22 is hinged to the ball chain plate conveyor line, and the other end of the centering driving part 22 is hinged to one of the cranks 24. A connecting rod 25 is installed between the two cranks 24, and both ends of the connecting rod 25 are respectively hinged to the two cranks 24.

[0023] When the centering driving part 22 extends, the centering driving part 22 drives the left centering swing arm 21 to swing counterclockwise through the crank 24, and the connecting rod 25 drives the right crank 24 to act, so that the right centering swing arm 21 swings clockwise, and the two centering swing arms 21 open synchronously. When the centering driving part 22 contracts, the centering driving part 22 drives the left centering swing arm 21 to swing clockwise through the crank 24, and the connecting rod 25 drives the right crank 24 to act, so that the right centering swing arm 21 swings counterclockwise, and the two centering swing arms 21 close synchronously. By adjusting the opening scale of the two centering swing arms 21, the pre-positioning operation of tires of different sizes can be adapted. Preferably, guide rollers are vertically installed on the inner sides of the guard plates 11 and the inner sides of the centering swing arms 21, and the guide rollers are used for guiding the tire to avoid scratching caused by friction of the tire crown.

[0024] During use, first adjust the opening and closing angles of the two centering swing arms 21 of the centering component 2 so that the distance between the ends of the two centering swing arms 21 is slightly larger than the outer diameter of the tire. When the tire moves to the right driven by the loading component 1, under the guiding action of the centering swing arms 21, the tire moves along the direction perpendicular to the conveying direction of the loading component 1 to the middle of the loading component 1, and the pre-positioning operation of the tire is completed.

[0025] As Figure 1 、 Figure 2As shown in the figure, a code scanning mechanism 3 is installed at the loading component 1. The code scanning mechanism 3 includes a code scanning bracket 31, a code scanning camera 32, and a code scanning light source 33. The code scanning bracket 31 is a U-shaped frame assembled from profiles. The code scanning bracket 31 is installed downstream of the centering component 2. The code scanning camera 32 and the code scanning light source 33 are both installed on the top of the code scanning bracket 31. The code scanning camera 32 is used to obtain images of the tires, and through TCP / IP communication, it docks with the factory MES system to identify the tire model content contained in the tire barcode serial number information, so as to automatically match the cleaning parameters according to information such as the material, size, and mold release agent of the tires. The code scanning light source 33 is used to supplement light to the tires to facilitate the code scanning camera 32 to obtain the cleaning images of the tires.

[0026] As Figures 4-9 shown, the laser cleaning main machine includes a frame 5, a positioning mechanism 6, a conveying mechanism 7, a cleaning mechanism 8, and a flaring mechanism 9. The frame 5 is a rectangular frame welded by square tubes. The positioning mechanism 6 and the conveying mechanism 7 are installed at the lower part of the frame 5. The cleaning mechanism 8 is installed above the positioning mechanism 6 through a cross beam 51. The flaring mechanism 9 is installed on the cleaning mechanism 8.

[0027] As Figure 1 、 Figure 4 shown, a protective cover 52 is installed on the outside of the frame 5. Maintenance doors 53 are installed on the front and rear sides of the protective cover 52 respectively. Transparent acrylic plates are installed on the maintenance doors 53 to facilitate observing the operation of the laser cleaning main machine. Lifting doors 54 are installed on the left and right sides of the protective cover 52 respectively. The tires enter the laser cleaning main machine through the lifting doors 54. When the tires are being laser cleaned, the lifting doors 54 are closed to prevent the smoke and dust generated by the laser cleaning from overflowing and ensure the comfort of the workshop environment. A precision filter 55 is installed on the top of the protective cover 52. The precision filter 55 is used to press down the air inside the laser cleaning main machine to prevent the smoke and dust generated by the laser cleaning from polluting the laser head. A control box 56 and a three-color light 57 are installed outside the protective cover 52. A touch screen is installed on the control box 56 for adjusting the cleaning parameters of the laser cleaning main machine. The three-color light 57 is used to give an audible and visual alarm when the equipment fails.

[0028] As Figures 4-7 shown, the positioning mechanism 6 includes a lifting component 61, a rotating component 62, and a positioning component 63. The rotating component 62 is installed on the lifting component 61, and the positioning component 63 is installed on the rotating component 62.

[0029] As Figure 6As shown in the figure, the lifting assembly 61 includes a lifting base 611, a lifting motor 612, and a lifting platform 613. Both the lifting base 611 and the lifting platform 613 are rectangular platforms. The lifting base 611 is installed at the bottom of the frame 5. The four corners of the lifting platform 613 are installed on the lifting base 611 through four synchronizers 614. The lifting motor 612 is drivingly connected to the four synchronizers 614 through a gearbox to achieve the smooth rise and fall of the lifting platform 613.

[0030] As Figure 6 shown in the figure, the rotating assembly 62 is a hollow rotating platform, and the hollow rotating platform is installed at the central position of the lifting platform 613. The positioning assembly 63 includes a positioning driving member 631 and a pair of positioning jigs. The positioning driving member 631 is a positive and negative lead screw module. The center of the positive and negative lead screw module is installed on the rotating assembly 62. The length direction of the positive and negative lead screw module is parallel to the Y direction. The two positioning jigs are respectively installed on the two sliders of the positive and negative lead screw module. The positive and negative lead screw module can drive the two positioning jigs to approach or move away from each other synchronously along the Y direction.

[0031] As Figure 6 、 Figure 7 shown in the figure, the positioning jig includes a positioning plate 632. The positioning plate 632 is in an eight - shaped configuration, and the openings of the two positioning plates 632 are arranged opposite to each other. The two ends of the positioning plate 632 are respectively vertically installed with positioning guide rollers 633, and the edges of the positioning guide rollers 633 protrude from the positioning plate 632. When the positive and negative lead screw module drives the two positioning jigs to approach each other synchronously, the positioning guide rollers 633 contact the crown of the tire to drive the tire to be centered and positioned.

[0032] Preferably, a positioning pressure ring 634 is detachably installed at the upper end of the positioning guide roller 633. The circumferential surface of the positioning pressure ring 634 is provided with a plurality of threaded holes, and set screws are screwed into the threaded holes. The positioning pressure ring 634 is fixed to the upper end of the positioning guide roller 633 through the set screws. A chamfer is provided on the outer edge of the lower end surface of the positioning pressure ring 634. When the positioning guide roller 633 contacts the crown of the tire, the chamfer of the positioning pressure ring 634 contacts the tire, thereby restricting the axial displacement of the tire.

[0033] As Figure 6 、 Figure 7 shown in the figure, a clamping assembly 64 is installed on the positioning jig. The clamping assembly 64 includes a clamping telescopic member 641 and a clamping block 642. The clamping telescopic member 641 is a cylinder. The clamping telescopic member 641 is installed in the middle of the positioning plate 632. The clamping block 642 is an arc - shaped block, and the clamping block 642 is installed at the telescopic end of the clamping driving member 641. After the positioning assembly 63 completes the positioning of the tire, the clamping telescopic member 641 drives the clamping block 642 to abut against the tire to achieve clamping of the tire, avoiding relative rotation between the tire and the positioning assembly 63 during laser cleaning and ensuring the complete cleaning of the inner wall of the tire.

[0034] AsFigure 6 , Figure 7 As shown in Figure 7 , a cross-shaped carrier 65 is installed on the positive and negative lead screw module. A number of universal wheels 651 are installed on the upper end surface of the carrier 65. The arrangement of the universal wheels 651 can reduce the friction between the tire and the carrier 65, facilitate the centering positioning of the tire, and avoid scratching the tire during positioning.

[0035] As Figure 4 , Figure 5 As shown in Figure 5 , the conveying mechanism 7 is a roller conveyor line. An avoidance position matching the carrier 65 is provided in the middle of the conveying mechanism 7. The positioning mechanism 6 is installed in the middle of the conveying mechanism 7, and the carrier 65 is located at the avoidance position. The conveying mechanism 7 is used to convey the unwashed tires into the positioning mechanism 6 along the X direction, or convey the washed tires out of the positioning mechanism 6 along the X direction.

[0036] When the lifting assembly 61 is in the low position, the upper end surface of the carrier 65 is at the same height as the conveying surface of the conveying mechanism 7; when the lifting assembly 61 is in the high position, the lower end surface of the positive and negative lead screw module is higher than the conveying surface of the conveying mechanism 7 to avoid interfering with the rotation of the positioning assembly 63.

[0037] As Figure 8 As shown in Figure 8 , the cleaning mechanism 8 is installed directly above the positioning mechanism 6. The cleaning mechanism 6 includes a cleaning bracket 81, a horizontal moving assembly 82, a vertical moving assembly 83, and a laser head 84. The cleaning bracket 81 is a rectangular frame and is installed on the frame 5. The horizontal moving assembly 82 is horizontally installed on the cleaning bracket 81. The vertical moving assembly 83 is vertically installed on the horizontal moving assembly 82. The laser head 84 is installed at the lower end of the vertical moving assembly 83, and the laser head 83 faces the inner wall of the tire.

[0038] Among them, both the horizontal moving assembly 82 and the vertical moving assembly 83 are linear lead screw modules. The laser head 84 is connected to a laser emitting device (not shown) through an optical fiber. The laser emitting device outputs a laser with a wavelength of 300 - 1100 nm, a laser power greater than 5 W, and a pulse width of 300 fs - 1 us. The laser scans and cleans the inner wall of the tire through a collimating mirror and a field lens. Among them, the focal length EFL of the collimating mirror > 30 mm, and the focal length EFL of the field lens > 100 mm.

[0039] As Figure 8 , Figure 9 As shown in Figure 9 , two flaring mechanisms 9 are symmetrically installed on both sides of the laser head 84. The flaring mechanism 9 includes a flaring driving member 91. The flaring driving member 91 is a parallel finger cylinder. Flaring rollers 92 are respectively installed on the two fingers of the parallel finger cylinder. The flaring rollers 92 are parallel to the axis of the laser head 84, and the flaring rollers 92 are located on the front side of the laser head 84.

[0040] In use, first, the fingers of the parallel finger cylinder are in the closed state. The vertical moving component 83 and the horizontal moving component 82 act respectively to make the flaring rollers 92 penetrate into the sub-mouth of the tire. Then the fingers of the parallel finger cylinder open. As Figure 11 shown, two pairs of flaring rollers 92 flare the tire on both sides of the laser head 84 respectively, so as to increase the distance of the sub-mouth at the laser head 84 and avoid the tire bead from blocking the cleaning path of the laser.

[0041] As Figure 8 , Figure 10 shown, a dust extraction mechanism 4 is also installed on the cleaning mechanism 8. The dust extraction mechanism 4 is installed on one side of the laser head 84. The dust extraction mechanism 4 includes a dust extraction bracket 41, a dust extraction head 42 and a dust extraction telescopic member 43. The dust extraction bracket 41 is installed on the outside of the flaring mechanism 9. The dust extraction head 42 is slidably installed on the dust extraction bracket 41 through a slide rail. The dust extraction telescopic member 43 is a cylinder. The dust extraction telescopic member 43 is installed on the dust extraction bracket 41. The telescopic end of the dust extraction telescopic member 43 is connected to the dust extraction head 42 and is used to drive the dust extraction head 42 to reciprocate along the axis direction parallel to the laser head 84.

[0042] During the laser cleaning operation, the dust extraction telescopic member 853 extends, and the dust extraction head 852 is extended into the tire to suck the smoke and dust generated by the laser cleaning to avoid the overflow of the smoke and dust. Preferably, a blowing mechanism symmetric to the dust extraction mechanism 85 can be arranged on the other side of the laser head 84. The blowing mechanism blows air to the laser cleaning area, which can not only cool down the cleaning area but also assist in dust extraction.

[0043] Embodiment 2 A cleaning method for the inner wall laser cleaning machine of the tire in Embodiment 1 includes the following steps: Step S01: Manually or mechanically transport the tire to be cleaned to the pre-positioning mechanism. The centering component centers the tire to ensure that the tire is located between two open positioning jigs when entering the laser cleaning main machine. The code scanning component acquires the image of the tire, identifies the bar code on the tire image, and obtains information such as the material, size, and release agent of the tire according to the bar code information, and automatically matches the cleaning parameters such as the position parameters of the positioning mechanism, the position parameters of the cleaning mechanism, and the laser parameters.

[0044] Step S1: The pre-positioning mechanism transports the tire to the conveying mechanism. The conveying mechanism transports the tire to the positioning mechanism. After the positioning driving member drives the positioning jig to complete the centering positioning of the tire, the clamping component clamps and fixes the tire. The lifting component jacks up to make the positioned and clamped tire rise. Under the action of the positioning guide roller, the positioning pressure ring and the clamping block, the tire remains relatively fixed with the bearing platform.

[0045] Step S2: The vertical movement component drives the flaring mechanism to descend, and the horizontal movement component operates to insert the flaring rollers of the flaring mechanism between the two bead lips of the tire; the flaring driving part drives the flaring rollers to move away from each other to flare the tire bead at the laser head. Step S3: The rotation component drives the tire to rotate. The laser emission device emits laser through the laser head to clean the inner wall of the tire, and the dust extraction mechanism sucks the smoke and dust generated by the laser cleaning; as the tire rotates, the flaring mechanism flares the tire at the laser head synchronously. Step S4: When the rotation component rotates 180°, the flaring driving part drives the flaring rollers to move closer to each other; the horizontal movement component operates to withdraw the flaring rollers of the flaring mechanism from between the two bead lips of the tire, and the vertical movement component drives the flaring mechanism to rise. Step S5: The lifting component falls back, the clamping component and the positioning component are reset in sequence, and the conveying mechanism operates to move the cleaned tire out from the positioning mechanism.

[0046] The technical solution provided by the embodiment of the present application has at least the following technical effects or advantages: 1. By installing a flaring mechanism at the laser head, the tire bead at the laser head can be expanded, avoiding the blockage of the laser head by the bead, ensuring the quality of laser cleaning, and enabling the laser cleaning of smaller-sized tires, thus expanding the application range of the equipment. 2. By setting a clamping component to clamp the tire, it can be avoided that the tire rotates with the positioning component during the cleaning process, resulting in cleaning dead corners, and ensuring the quality of tire cleaning. 3. By installing a positioning pressing ring on the upper side of the positioning guide roller, the tire can be limited from the outer edge of the upper end face of the tire, avoiding the axial displacement of the tire during the cleaning process, and ensuring the cleaning quality of the tire. 4. By flaring a part of the tire with the flaring rollers, the force on the tire bead by the flaring mechanism can be reduced, avoiding damage to the tire bead and ensuring the quality of the tire; at the same time, the flaring rollers can rotate with the tire, avoiding the influence of the flaring mechanism on the rotation of the tire and ensuring the quality of laser cleaning. 5. By driving the flaring rollers to flare the tire with the finger cylinder, the flaring mechanism can be in place during the process of moving the laser head into the tire, without additional flaring steps, simplifying the flaring procedure and improving the cleaning efficiency.

[0047] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A tire inner wall laser cleaning machine, characterized in that: include: The positioning mechanism comprises a lifting assembly, a rotating assembly is mounted on the lifting assembly, a positioning assembly is mounted on the rotating assembly, the positioning assembly comprises a positioning drive and a pair of positioning fixtures, the positioning drive can drive the pair of positioning fixtures to synchronously approach or move away along the Y direction; the positioning fixture is mounted with a clamping assembly, the clamping assembly comprises a clamping telescopic member and a clamping block, the clamping telescopic member can drive the clamping block to reciprocate along the radial direction of the tire; A conveying mechanism, the conveying mechanism is installed on the peripheral side of the positioning mechanism, and the conveying mechanism is used to convey the uncleaned tire into the positioning mechanism along the X direction, or to move the cleaned tire out of the positioning mechanism along the X direction; A cleaning mechanism, the cleaning mechanism is installed above the positioning mechanism, the cleaning mechanism comprises a horizontal moving component, a vertical moving component and a laser head, the vertical moving component is installed on the horizontal moving component, the laser head is installed at the lower end of the vertical moving component, and the laser head is connected to a laser emitting device; The expanding mechanism, two expanding mechanisms are installed on both sides of the laser head, the expanding mechanism includes an expanding drive component, the expanding drive component is a parallel finger cylinder, and expanding rollers are respectively installed on the two fingers of the parallel finger cylinder, and the expanding rollers protrude from the laser head.

2. The tire inner wall laser cleaning machine according to claim 1, characterized in that: The positioning fixture comprises a positioning plate, which is in an eight-shaped shape. The openings of the two positioning plates are arranged opposite to each other, and positioning guide rollers are vertically installed at both ends of the positioning plate; the clamping assembly is installed in the middle of the positioning plate.

3. The tire inner wall laser cleaning machine according to claim 2, characterized in that: A positioning pressure ring is installed on the positioning guide roller, the outer edge of the lower end surface of the positioning pressure ring is provided with a chamfer, the peripheral surface of the positioning pressure ring is provided with a threaded hole, and a top screw is provided in the threaded hole.

4. The tire inner wall laser cleaning machine according to claim 1, characterized in that: The lifting assembly includes a lifting base, a lifting motor and a lifting platform. The lifting platform is installed on the lifting base through a synchronizer, and the lifting motor is transmission-connected to the synchronizer. The rotating assembly is a hollow rotating platform, and the hollow rotating platform is installed on the lifting platform.

5. The tire inner wall laser cleaning machine according to claim 1, characterized in that: The positioning drive component is a forward and reverse screw module, and the forward and reverse screw module is installed on the rotating component; a cross-shaped bearing platform is installed on the forward and reverse screw module, and a universal wheel is arranged on the upper end surface of the bearing platform.

6. The tire inner wall laser cleaning machine according to claim 1, characterized in that: A dust extraction mechanism is installed on the cleaning mechanism, and the dust extraction mechanism is located on one side of the laser head. The dust extraction mechanism includes a dust extraction head and a dust extraction telescopic member, and the dust extraction telescopic member can drive the dust extraction head to reciprocate along an axial direction parallel to the laser head.

7. The tire inner wall laser cleaning machine according to claim 1, characterized in that: A pre-positioning mechanism is arranged upstream of the conveying mechanism, and the pre-positioning mechanism includes a loading assembly and a centering assembly, and the loading assembly is a ball chain conveyor line; the centering assembly includes a centering swing arm and a centering drive member, and the two centering swing arms are rotatably mounted on both sides of the ball chain conveyor line through vertical rotating shafts respectively, and a crank is arranged at the lower end of the vertical rotating shaft, and the centering drive member is connected to any one of the cranks, and a connecting rod is arranged between the two cranks, and the connecting rod drives the two vertical rotating shafts to rotate synchronously and oppositely through the crank.

8. The tire inner wall laser cleaning machine according to claim 7, characterized in that: Guard plates are arranged on both sides of the feeding assembly, and guide rollers are vertically arranged on the inner sides of the guard plates and the inner sides of the centering swing arms.

9. The tire inner wall laser cleaning machine according to claim 7, characterized in that: A code scanning mechanism is arranged on the upper side of the feeding assembly, and the code scanning mechanism comprises a code scanning bracket, a code scanning camera and a code scanning light source, and the code scanning camera and the code scanning light source are both installed on the code scanning bracket.

10. A cleaning method for the inner wall of a tire using a laser cleaning machine as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1, placing the tire on the conveying mechanism, the conveying mechanism conveys the tire to the positioning mechanism, after the positioning assembly completes the centering of the tire, the clamping assembly clamps and fixes the tire, and the lifting assembly lifts up to make the positioned and clamped tire rise; Step S2, the vertical moving component drives the flaring mechanism to descend, and the horizontal moving component moves to insert the flaring roller of the flaring mechanism between the two tire beads; the flaring driving member drives the flaring rollers to move away from each other, and flares the tire mouth at the laser head; Step S3, the rotating assembly drives the tire to rotate, the laser emitting device emits laser to the inner wall of the tire through the laser head to perform cleaning operation, and the flaring mechanism flares the tire at the laser head synchronously; Step S4, after the rotating assembly rotates 180°, the expansion drive member drives the expansion rollers to move closer to each other; the horizontal moving assembly moves to pull the expansion rollers of the expansion mechanism out from between the two tire beads of the tire, and the vertical moving assembly drives the expansion mechanism to rise; Step S5, the lifting assembly falls back, the clamping assembly and the positioning assembly are reset in sequence, and the conveying mechanism is actuated to move the cleaned tire out of the positioning mechanism.

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