Retreading and polishing device for rubber engineering tire

Abstract

The invention relates to the technical field of engineering tire processing, in particular to a retreading and polishing device for a rubber engineering tire, which comprises a bottom plate and an operation table mounted on the bottom plate, an expansion rim is rotationally connected to the operation table. The power assembly is connected to the bottom plate; the power assembly is connected with a mounting cover; a circular shaft is rotationally connected to the mounting cover; and the circular shaft is fixedly connected with a polishing roller positioned in the mounting cover. The old engineering tire is fixed through the expansion rim, the old engineering tire is driven to rotate, then the multiple cutters are moved out of the grinding rollers, patterns on the tread of the old engineering tire are cut through the multiple grinding rollers, after the patterns are removed, the multiple cutters are folded, and the patterns on the tread of the old engineering tire are cut. The rugged tread of the old engineering tire is ground to be rough through the grinding roller, so that the retreading process of the old engineering tire is optimized, the retreading efficiency of the old engineering tire is improved, and the workload of workers is relieved.

Description

Technical Field

[0001] This invention relates to the field of engineering tire processing technology, and more specifically, to a retreading and polishing device for rubber engineering tires. Background Technology

[0002] With the rapid development of the transportation and construction machinery industries, a large number of tires lose their original performance due to wear, cuts, and aging caused by long-term use, becoming waste tires. Direct disposal not only wastes resources but also causes environmental problems such as "black pollution." Against this backdrop, tire retreading, as an effective recycling method, is gradually becoming an important way to utilize waste tire resources.

[0003] In the existing technology, due to the large size and thick tread pattern of engineering tires, grinding the tread pattern of engineering tires with conventional tire grinding machines is time-consuming and inefficient. Cutting the tread pattern of engineering tires with cutting equipment cannot make the tread rough, and the engineering tires need to be transferred to the grinding equipment for grinding again. This not only increases the number of operation steps but also increases the processing time, which seriously affects the retreading efficiency of engineering tires. Summary of the Invention

[0004] To overcome the drawbacks of conventional tire grinding machines, which are time-consuming and inefficient due to the large size and thick tread patterns of engineering tires, this invention provides a retreading and grinding device for rubber engineering tires.

[0005] The technical solution of the present invention is: a retreading and polishing device for rubber engineering tires, comprising a base plate and an operating platform mounted on the base plate; an expansion rim is rotatably connected to the operating platform; a power assembly is also included, connected to the base plate; a mounting cover is connected to the power assembly; a round shaft is rotatably connected to the mounting cover; a polishing roller located inside the mounting cover is fixedly connected to the round shaft; a polishing coating is provided on the surface of the polishing roller; a servo motor fixedly connected to the mounting cover and to the round shaft is fixedly connected; a plurality of annular grooves are provided on the polishing roller; a plurality of guide grooves are provided in an annular array within each annular groove; a cutting blade is slidably connected within each guide groove; a spring is fixedly connected to each cutting blade, and the spring is fixedly connected to the corresponding guide groove; an extension assembly for pushing the plurality of cutting blades outward is connected to both the mounting cover and the polishing roller; the power assembly is used to drive the polishing roller and the cutting blades to move.

[0006] Furthermore, the power assembly includes a base fixed to the base plate; two electric slide rails are fixed to the upper surface of the base; each electric slide rail is slidably connected to an electric slider; a mounting plate is fixed to both electric sliders; an electric slide rail is fixed to the mounting plate; an electric slider is slidably connected to the electric slide rail; and the electric slider is fixed to the mounting cover.

[0007] To extend or retract the cutting tool, the extension assembly further includes two brackets fixed to the front side of the mounting cover, with the two brackets located on the upper and lower sides of the circular shaft; each bracket is fixed with an electric push rod; the telescopic parts of the two electric push rods are jointly fixed with a circular ring I located inside the mounting cover; two springs II are fixed to the front side of the grinding roller; a circular ring II that fits against the circular ring I is jointly fixed to the two springs II; the grinding roller has several through slots arranged in a circular array; a slide rod is slidably connected in each through slot, and all slide rods are jointly fixed with the circular ring II; several wedge blocks arranged in a circular array are fixed to each slide rod; each cutting tool has a slanted groove; the wedge block of each slide rod slides into the slanted groove of the corresponding cutting tool; the slide rod and the wedge block are slidably disposed in the corresponding through slot.

[0008] To guide the flow of gas, the system further includes several guide plates fixed in each annular groove, with each guide plate located between two adjacent cutting blades; several circular holes are provided on the circular shaft; several guide grooves arranged in a circular array are provided on the inner side of each annular groove, and each guide groove communicates with the corresponding circular hole; the circular shaft is hollow.

[0009] To facilitate the replacement of damaged cutting tools by operators, the cutting tool is further composed of a fan-shaped plate and an arc-shaped cutting edge; the arc-shaped cutting edge is detachably connected to the fan-shaped plate.

[0010] To prevent debris from scattering in all directions, the system further includes a support frame fixed to the front of the base plate; a first cover is fixed to the support frame; an arc-shaped sliding groove plate is fixed to the outer side of the first cover; an arc-shaped sliding plate is connected to the arc-shaped sliding groove plate with damping; several telescopic rods are fixed to the front of the arc-shaped sliding plate; a second cover is fixed to all the telescopic rods; a straight sliding groove is provided on the support frame; a support frame that contacts the second cover is slidably connected in each straight sliding groove; a sliding column is fixed to the support frame; an arc-shaped groove is provided on the second cover, and the sliding column is slidably positioned in the arc-shaped groove; a ramp located to the right of the support frame is fixed to the front of the base plate; a support plate that overlaps the ramp is movably connected to the lower part of the second cover.

[0011] Furthermore, a handle is provided on the front side of the second cover; a handle is provided on the front side of the support frame.

[0012] The above settings facilitate the movement of the second cover and the support frame.

[0013] Furthermore, several rubber strips are provided on the receiving plate.

[0014] The above settings increase the friction on the receiving plate and limit the movement of old engineering tires.

[0015] Furthermore, a round handle is provided on the receiving plate.

[0016] The above settings make it easier for operators to hold the receiving plate.

[0017] To guide the collection of debris, a guide plate is further included, which is fixed to the left side of the mounting cover; a collection box is fixed to the base plate and is located between the support frame and the base.

[0018] The beneficial effects of this invention are as follows: The retreading and grinding device for rubber engineering tires obtained by the present invention fixes the old engineering tire with an expanding rim and rotates it. Then, several cutting blades are moved out of the grinding roller and cut the tread pattern of the old engineering tire with the cutting blades. After the tread pattern is removed, the cutting blades are retracted and the uneven tread of the old engineering tire is roughened by the grinding roller. This optimizes the retreading process of old engineering tires, not only improving the retreading efficiency of old engineering tires, but also reducing the workload of manual labor.

[0019] The present invention provides a retreading and polishing device for rubber engineering tires, which, through the above design, guides the airflow to two adjacent cutting blades via a guide plate, allowing the airflow to continuously exit the gap between the cutting blades and the annular groove. The continuous airflow also carries away the high temperature generated by the cutting blades during operation, preventing the cutting blocks from sticking to the cutting blades.

[0020] After the cutting blades are fully retracted, the gap between the guide plate and the two adjacent cutting blades will become smaller, and the flow rate of the gas discharged from the annular groove will increase. This will carry away the heat generated by the friction between the grinding roller and the old engineering tire, preventing overheating and rubber carbonization. At the same time, the faster flow rate will prevent fine debris from entering the annular groove and affecting the normal unfolding and retraction of the cutting blades.

[0021] The present invention provides a retreading and polishing device for rubber engineering tires, designed as described above. The operator holds a round handle and rotates the receiving plate toward the old engineering tire, causing several rubber strips on the receiving plate to contact the outer surface of the old engineering tire, increasing the friction between the receiving plate and the old engineering tire, confining the old engineering tire within the second housing, and moving the old engineering tire to the center of the first housing. This facilitates the operator in installing the old engineering tire on the expansion rim, reducing the operator's workload.

[0022] The present invention provides a retreading and polishing device for rubber engineering tires, which forms an interception cover on the outside of the old engineering tire through the first cover and the second cover. This intercepts the flying debris and causes the debris to gather on the inside of the second cover, preventing the debris from flying around and reducing the cleaning difficulty for the operator. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the retreading and polishing device for rubber engineering tires according to the present invention;

[0024] Figure 2 This is a three-dimensional structural schematic diagram of the power component of the retreading and polishing device for rubber engineering tires of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the mounting cover, round shaft, grinding roller, servo motor, cutting blade and extension components of the retreading and grinding device for rubber engineering tires of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the round shaft, grinding roller, cutting blade, spring 1, and guide plate of the retreading and grinding device for rubber engineering tires of the present invention.

[0027] Figure 5 This is a three-dimensional structural diagram of the cutting blade, spring II, ring II, slide bar, and wedge block of the retreading and grinding device for rubber engineering tires of the present invention;

[0028] Figure 6 This is a three-dimensional structural schematic diagram of the cutting blade of the retreading and grinding device for rubber engineering tires of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the base plate, mounting cover, cover shell one, cover shell two, ramp, receiving plate, guide plate and collection box of the retreading and grinding device for rubber engineering tires of the present invention.

[0030] Figure 8 This is a three-dimensional structural diagram of the receiving plate of the retreading and grinding device for rubber engineering tires of the present invention.

[0031] The markings in the attached diagram are: 1-base plate, 2-operating table, 3-expansion rim, 4-mounting cover, 5-round shaft, 6-grinding roller, 7-servo motor, 8-cutting blade, 9-spring one, 81-fan-shaped plate, 82-arc-shaped blade, 101-base, 102-electric slide rail one, 103-electric slider one, 104-mounting plate, 105-electric slide rail two, 106-electric slider two, 201-bracket, 202-electric push rod, 203-ring one, 204-spring two, 205-ring two, 206-slide rod, 207-wedge block, 208-guide plate, 30 1-Support frame, 302-Cover 1, 303-Arc-shaped slide plate, 304-Arc-shaped slide plate, 305-Telescopic rod, 306-Cover 2, 307-Support frame, 308-Slide column, 309-Ramp, 310-Support plate, 401-Guide plate, 402-Collection box, 5001-Round hole, 6001-Annular groove, 6002-Guide groove, 6003-Through groove, 6004-Guide groove, 8001-Sloping groove, 30101-Straight slide groove, 30601-Arc-shaped groove, 30701-Handle 2, 30602-Handle 1, 31001-Round handle. Detailed Implementation

[0032] The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0033] Example 1: A retreading and polishing device for rubber engineering tires, such as Figures 1-6 As shown, it includes a base plate 1, an operating platform 2, and an expansion wheel rim 3; the operating platform 2 is mounted on the base plate 1; the expansion wheel rim 3 is rotatably connected to the operating platform 2;

[0034] It also includes a power assembly, a mounting cover 4, a round shaft 5, a grinding roller 6, a servo motor 7, a cutting blade 8, a spring 9, and an extension assembly; the power assembly is connected to the base plate 1; the mounting cover 4 is connected to the power assembly; the round shaft 5 is rotatably connected to the mounting cover 4; the grinding roller 6 is fixedly connected to the round shaft 5, and the grinding roller 6 is located inside the mounting cover 4; the surface of the grinding roller 6 is provided with a grinding coating; the servo motor 7 is bolted to the rear side of the mounting cover 4, and the output shaft of the servo motor 7 is fixedly connected to the round shaft 5; the grinding roller 6 has an opening... Several annular grooves 6001 are evenly distributed; each annular groove 6001 has six guide grooves 6002 arranged in a ring array; each guide groove 6002 has a cutting blade 8 slidably connected to it; each cutting blade 8 has a spring 9 fixedly connected to it, and the spring 9 is fixedly connected to the corresponding guide groove 6002; the mounting cover 4 and the grinding roller 6 are connected together to an extension assembly; the power assembly is used to drive the grinding roller 6 and the cutting blades 8 to move, so that the grinding roller 6 and the cutting blades 8 are close to the old engineering tire.

[0035] The power assembly includes a base 101, an electric slide rail 102, an electric slider 103, a mounting plate 104, an electric slide rail 105, and an electric slider 106. The base 101 is fixedly connected to the upper surface of the base plate 1. Two electric slide rails 102 are bolted to the upper surface of the base 101. Each electric slide rail 102 is slidably connected to an electric slider 103. The mounting plate 104 is fixedly connected to both electric sliders 103. An electric slide rail 105 is bolted to the mounting plate 104. An electric slider 106 is slidably connected to the electric slide rail 105. The electric slider 106 is fixedly connected to the mounting cover 4.

[0036] The expansion assembly includes two brackets 201, an electric push rod 202, a first ring 203, a second spring 204, a second ring 205, a slide rod 206, and a wedge block 207. Two brackets 201 are fixedly attached to the front side of the mounting cover 4, and the two brackets 201 are located on the upper and lower sides of the circular shaft 5. Each bracket 201 has an electric push rod 202 fixedly attached to it. The telescopic portions of the two electric push rods 202 are jointly fixedly connected to a first ring 203, and the first ring 203 is located inside the mounting cover 4. Two second springs 204 are fixedly attached to the front side of the grinding roller 6. A second ring 205 is jointly fixedly attached to the two second springs 204. Furthermore, the second ring 205 is in contact with the first ring 203; the grinding roller 6 has six through slots 6003 arranged in a ring array; each through slot 6003 is slidably connected to a slide rod 206, and all slide rods 206 are fixedly connected to the second ring 205; each slide rod 206 is fixedly connected to several wedge blocks 207 arranged in a ring array; each cutting blade 8 has a slanted groove 8001; the wedge block 207 of each slide rod 206 is slidably engaged with the slanted groove 8001 of the corresponding cutting blade 8; the slide rod 206 and the wedge block 207 are slidably disposed in the corresponding through slot 6003.

[0037] It also includes guide plates 208, with six guide plates 208 fixedly connected in each annular groove 6001, and each guide plate 208 located between two adjacent cutting blades 8; a number of circular holes 5001 are opened on the circular shaft 5; a number of guide grooves 6004 arranged in a circular array are opened on the inner side of each annular groove 6001, and each guide groove 6004 is connected to the corresponding circular hole 5001; the circular shaft 5 is hollow.

[0038] The cutting tool 8 consists of a fan-shaped plate 81 and an arc-shaped cutting edge 82; the arc-shaped cutting edge 82 is detachably connected to the fan-shaped plate 81.

[0039] The working steps of this embodiment are as follows:

[0040] The following directions are Figure 1 Using the perspective reference, the direction where the base 101 is located is to the right. The rotation is in the direction of the perspective from front to back, from top to bottom, and from right to left.

[0041] When in use, the operator places the retreading and grinding device, which is intended for rubber engineering tires, in the required position, connects an external power source to all components that require electric drive, and connects an external air pump to the air inlet end of the expansion rim 3 and the front end of the round shaft 5.

[0042] The operator manually lifts the old engineering tire onto the expansion rim 3, then controls the expansion rim 3 to expand outward to fix the old engineering tire. The operator then controls the control panel 2 to rotate the expansion rim 3 and the old engineering tire counterclockwise. Next, the operator controls the extension parts of the two electric push rods 202 to extend, causing the first ring 203 to move towards the grinding roller 6, forcing the two second springs 204 to compress. The movement of the first ring 203 will push the second ring 205, the slide rod 206 and the wedge block 207 to move synchronously. Since the wedge block 207 slides in the inclined groove 8001, the wedge block 207 will push the cutting blade 8 to move outward in the corresponding guide groove 6002, forcing all the first springs 9 to compress until all the cutting blades 8 are moved out of the annular groove 6001 and unfolded on the grinding roller 6. Then, the operator controls the output shaft of the servo motor 7 to drive the round shaft 5, the grinding roller 6, the cutting blade 8, the first spring 9, the second ring 205, the slide rod 206 and the wedge block 207 to rotate together.

[0043] After the grinding roller 6 and the cutting blade 8 continue to rotate, the electric slider 103 is controlled to move on the electric slide rail 102. The two electric sliders 103 drive the mounting plate 104, the electric slide rail 105, the electric slider 106, the mounting cover 4, the grinding roller 6, and the cutting blade 8 to move together toward the old engineering tire, so that the continuously rotating cutting blade 8 gets close to the tread of the old engineering tire. At the same time, the electric slider 106 is controlled to move on the electric slide rail 105. The electric slider 106 drives the mounting cover 4, the grinding roller 6, and the cutting blade 8 to move back and forth. The continuously rotating cutting blade 8 cuts the tread of the old engineering tire until the old tread pattern of the old engineering tire is removed, making the tread of the old engineering tire uneven.

[0044] Next, control the retraction of the telescopic parts of the two electric push rods 202, causing the first ring 203 to reset. Simultaneously, under the action of the first spring 9 and the second spring 204, the cutting blade 8, the second ring 205, the slide rod 206, and the wedge block 207 also reset, causing all the cutting blades 8 to retract into the annular groove 6001. Then, control the electric sliders 103 and 106 to move the connected components adaptively, allowing the continuously rotating grinding roller 6 to press against the tread of the old engineering tire, grinding the uneven tread of the old engineering tire until the tread of the old engineering tire is roughened. Finally, control the electric sliders 103 and 106 to move the connected components adaptively, allowing the continuously rotating grinding roller 6 to press against the tread of the old engineering tire, grinding the uneven tread of the old engineering tire. The slider 106 drives the connected components to reset, the output shaft of the servo motor 7 stops rotating, and the expansion rim 3 and the old engineering tire stop rotating. In this way, the old engineering tire is fixed by the expansion rim 3 and rotates with the old engineering tire. Then, several cutting blades 8 are moved out of the grinding roller 6 and the tread pattern of the old engineering tire is cut by the cutting blades 8. After the tread pattern is removed, the cutting blades 8 are retracted and the uneven tread of the old engineering tire is roughened by the grinding roller 6. This optimizes the retreading process of old engineering tires, which not only improves the retreading efficiency of old engineering tires, but also reduces the workload of manual labor.

[0045] Because there is a gap between the cutting blade 8 and the annular groove 6001, the cutting blade 8 generates high temperature during the cutting of the tread pattern of the old engineering tire, causing some cutting blocks to stick to the cutting blade 8, affecting the subsequent cutting effect of the cutting blade 8. Therefore, after the cutting blade 8 is unfolded, the external air pump is controlled to continuously deliver gas into the hollow round shaft 5, allowing the gas to pass through the round hole 5001 and the guide groove 6004 and be discharged into the annular groove 6001. At this time, under the guidance of the guide plate 208, the airflow flows to the two adjacent cutting blades 8, allowing the gap between the cutting blade 8 and the annular groove 6001 to continuously discharge the airflow. The continuous airflow carries away the high temperature generated by the cutting blade 8 during operation, preventing the cutting blocks from sticking to the cutting blade 8.

[0046] When the grinding roller 6 is performing grinding work, it generates a lot of heat and fine debris. The grinding roller 6 also has several annular grooves 6001, which cause fine debris to enter the annular grooves 6001, affecting the normal deployment and retraction of the cutting blade 8. Therefore, after the cutting blade 8 is fully retracted, the gap between the guide plate 208 and the two adjacent cutting blades 8 will become smaller, and the flow rate of the gas discharged from the annular grooves 6001 will increase. This will carry away the heat generated by the friction between the grinding roller 6 and the old engineering tire, preventing overheating and rubber carbonization. At the same time, the faster flow rate can prevent fine debris from entering the annular grooves 6001 and affecting the normal deployment and retraction of the cutting blade 8.

[0047] It should be noted that when the cutting tool 8 is damaged after prolonged use, the operator can control the extension and retraction of the two electric push rods 202 to move the connected components and push all the cutting tools 8 out of the annular groove 6001. Since the cutting tool 8 is composed of a fan-shaped plate 81 and an arc-shaped cutting edge 82, the operator can remove the damaged arc-shaped cutting edge 82 from the fan-shaped plate 81 and replace it with a new arc-shaped cutting edge 82. This makes it easier for the operator to maintain the damaged cutting tool 8.

[0048] Example 2: Based on Example 1, such as Figure 1 , Figure 7 and Figure 8 As shown, it also includes a support frame 301, a first cover 302, an arc-shaped sliding plate 303, an arc-shaped sliding plate 304, telescopic rods 305, a second cover 306, a support frame 307, a sliding column 308, a ramp 309, and a receiving plate 310; the support frame 301 is fixedly connected to the front of the base plate 1; the first cover 302 is fixedly connected to the support frame 301; the arc-shaped sliding plate 303 is fixedly connected to the outer side of the first cover 302; the arc-shaped sliding plate 304 is damped and slidably connected to the arc-shaped sliding plate 303; three telescopic rods 305 are fixedly connected to the front side of the arc-shaped sliding plate 304; all telescopic rods 305 are connected to a common... The cover 306 is connected to the support frame 301; a straight groove 30101 is provided on the support frame 301; a support frame 307 is slidably connected in each straight groove 30101, and the support frame 307 is in contact with the cover 306; a sliding column 308 is fixedly connected to the support frame 307; an arc groove 30601 is provided on the cover 306, and the sliding column 308 is slidably disposed in the arc groove 30601; a ramp 309 is fixedly connected to the front of the base plate 1, and the ramp 309 is located to the right of the support frame 301; a receiving plate 310 is hinged to the lower part of the cover 306, and the receiving plate 310 overlaps the ramp 309.

[0049] The front side of the second cover 306 is provided with a handle 30602; the front side of the support frame 307 is provided with a handle 30701, so as to facilitate the operator to move the second cover 306 and the support frame 307.

[0050] Furthermore, the receiving plate 310 is provided with several rubber strips.

[0051] Furthermore, a round handle 31001 is provided on the receiving plate 310.

[0052] The further advantage of using the above is that the friction of the receiving plate 310 is increased by the rubber strip, and the receiving plate 310 is easier for the operator to hold.

[0053] It also includes a guide plate 401 and a collection box 402; the guide plate 401 is fixedly connected to the left side of the mounting cover 4; the collection box 402 is fixedly connected to the base plate 1, and the collection box 402 is located between the support frame 301 and the base 101.

[0054] The working principle of this embodiment is as follows:

[0055] In existing technology, when installing old engineering tires on a tire grinder, the old engineering tire needs to be lifted onto the expansion rim 3 to fit into it. Because the old engineering tire is heavy, the fitting process requires considerable force, making tire installation difficult. Furthermore, the debris generated during cutting and grinding of the old engineering tire flies around, contaminating the device and increasing the cleaning difficulty for operators. Therefore, when manually installing the old engineering tire, the operator pushes it to roll along the ramp 309 and the receiving plate 310 to the inside of the second housing 306. Then, holding the round handle 31001, the operator rotates the receiving plate 310 towards the old engineering tire, causing several rubber pads on the receiving plate 310 to... The rubber strip contacts the outer surface of the old engineering tire, increasing the friction between the receiving plate 310 and the old engineering tire, thus confining the old engineering tire within the second cover 306. Simultaneously, by grasping the second handle 30701, the second cover 306, support frame 307, sliding column 308, receiving plate 310, and old engineering tire are moved backward. The support frame 307 slides within the straight slide groove 30101, forcing all telescopic rods 305 to compress, moving the old engineering tire onto the expansion rim 3. The expansion rim 3 then secures the old engineering tire, detaching it from the second cover 306 and placing it at the center of the first cover 302. This facilitates the operator's installation of the old engineering tire onto the expansion rim 3, reducing the operator's workload.

[0056] After the old engineering tire is fixed, the operator holds handle 30602 and rotates the arc-shaped sliding plate 304, telescopic rod 305, cover 306, and receiving plate 310 counterclockwise. This causes the arc-shaped sliding plate 304 to slide within the arc-shaped sliding groove plate 303, and the sliding column 308 to slide within the arc-shaped groove 30601, until the lower part of cover 306 rotates to the left of guide plate 401. A fan-shaped space is reserved between cover 306 and cover 302 to ensure that the grinding roller 6 and cutting blade 8 can cut and grind the old engineering tire. This allows cover 302 and cover 306 to form an intercepting cover on the outside of the old engineering tire, intercepting the flying debris and causing it to gather inside cover 306, preventing debris from flying around and reducing the cleaning difficulty for the operator.

[0057] It should be noted that during the cutting and grinding of the old engineering tire by the grinding roller 6 and the cutting blade 8, the guide plate 401 is brought close to the outside of the cover 306 to guide the debris generated by cutting and grinding into the collection box 402, preventing the debris from accumulating on the outside of the electric slide rail 102 and affecting the movement of the electric slider 103. After the old engineering tire is cut and ground, the operator holds the handle 30602 and drives the cover 306 and the connected parts to rotate clockwise to restore it, pouring the debris in the cover 306 into the collection box 402.

[0058] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A retreading and polishing device for rubber engineering tires, comprising a base plate (1) and an operating table (2) mounted on the base plate (1); an expansion rim (3) is rotatably connected to the operating table (2); characterized in that: It also includes a power assembly connected to the base plate (1); a mounting cover (4) is connected to the power assembly; a round shaft (5) is rotatably connected to the mounting cover (4); a grinding roller (6) located inside the mounting cover (4) is fixedly connected to the round shaft (5); a grinding coating is provided on the surface of the grinding roller (6); a servo motor (7) fixedly connected to the round shaft (5) is fixedly connected to the mounting cover (4); a number of annular grooves (6001) are opened on the grinding roller (6) in an equidistant arrangement; each annular groove (6001) contains Each has several guide grooves (6002) arranged in a ring array; each guide groove (6002) has a cutting blade (8) slidably connected in it; each cutting blade (8) has a spring (9) fixedly connected to it, and the spring (9) is fixedly connected to the corresponding guide groove (6002); the mounting cover (4) and the grinding roller (6) are connected together to an extension component for pushing several cutting blades (8) to move outward; the power component is used to drive the grinding roller (6) and the cutting blades (8) to move.

2. The retreading and polishing device for rubber engineering tires according to claim 1, characterized in that: The power assembly includes a base (101) fixed to the base plate (1); two electric slide rails (102) are fixed to the upper surface of the base (101); an electric slider (103) is slidably connected to each electric slide rail (102); a mounting plate (104) is fixed to both electric sliders (103); an electric slide rail (105) is fixed to the mounting plate (104); an electric slider (106) is slidably connected to the electric slide rail (105); and the electric slider (106) is fixed to the mounting cover (4).

3. The retreading and polishing device for rubber engineering tires according to claim 2, characterized in that: The extension assembly includes two brackets (201) fixed to the front side of the mounting cover (4), and the two brackets (201) are located on the upper and lower sides of the circular shaft (5); each bracket (201) is fixed with an electric push rod (202); the telescopic parts of the two electric push rods (202) are jointly fixed with a circular ring (203) located inside the mounting cover (4); two springs (204) are fixed to the front side of the grinding roller (6); two springs (204) are jointly fixed with a circular ring (205) that fits against the circular ring (203); the grinding roller (6) has a number of circular arrays. The cloth has a through groove (6003); each through groove (6003) is slidably connected to a slide rod (206), and all slide rods (206) are fixedly connected to the second ring (205); each slide rod (206) is fixedly connected to several wedge blocks (207) arranged in a ring array; each cutting blade (8) has a slanted groove (8001); the wedge block (207) of each slide rod (206) is slidably engaged with the slanted groove (8001) of the corresponding cutting blade (8); the slide rod (206) and the wedge block (207) are slidably set in the corresponding through groove (6003).

4. The retreading and polishing device for rubber engineering tires according to claim 3, characterized in that: It also includes several guide plates (208) fixed in each annular groove (6001), and each guide plate (208) is located between two adjacent cutting tools (8); several circular holes (5001) are opened on the circular shaft (5); several guide grooves (6004) are opened on the inner side of each annular groove (6001) in a circular array, and each guide groove (6004) is connected to the corresponding circular hole (5001); the circular shaft (5) is hollow.

5. The retreading and polishing device for rubber engineering tires according to claim 1, characterized in that: The cutting tool (8) consists of a fan-shaped plate (81) and an arc-shaped cutting edge (82); the arc-shaped cutting edge (82) is detachably connected to the fan-shaped plate (81).

6. The retreading and polishing device for rubber engineering tires according to claim 4, characterized in that: It also includes a support frame (301) fixed to the front side of the base plate (1); a cover (302) is fixed to the support frame (301); an arc-shaped sliding plate (303) is fixed to the outer side of the cover (302); an arc-shaped sliding plate (304) is connected to the arc-shaped sliding plate (303) with damping; several telescopic rods (305) are fixed to the front side of the arc-shaped sliding plate (304); a cover (306) is fixed to all the telescopic rods (305); and a straight sliding groove (30101) is opened on the support frame (301). Each linear slid groove (30101) is slidably connected to a support frame (307) that contacts the second cover (306); a sliding column (308) is fixedly connected to the support frame (307); an arc groove (30601) is provided on the second cover (306), and the sliding column (308) is slidably set in the arc groove (30601); a ramp (309) located to the right of the support frame (301) is fixedly connected to the front of the bottom plate (1); a support plate (310) that overlaps the ramp (309) is movably connected to the lower part of the second cover (306).

7. A retreading and polishing device for rubber engineering tires according to claim 6, characterized in that: The front side of the cover (306) is provided with handle 1 (30602); the front side of the support frame (307) is provided with handle 2 (30701).

8. The retreading and polishing device for rubber engineering tires according to claim 6, characterized in that: Several rubber strips are provided on the receiving plate (310).

9. A retreading and polishing device for rubber engineering tires according to claim 6, characterized in that: A round handle (31001) is provided on the receiving plate (310).

10. A retreading and polishing device for rubber engineering tires according to claim 6, characterized in that: It also includes a guide plate (401) fixed to the left side of the mounting cover (4); a collection box (402) is fixed to the base plate (1), and the collection box (402) is located between the support frame (301) and the base (101).

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