CN114277531B - Textile rubber roller convenient for rubber surface replacement - Google Patents
Textile rubber roller convenient for rubber surface replacement Download PDFInfo
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- CN114277531B CN114277531B CN202111594044.8A CN202111594044A CN114277531B CN 114277531 B CN114277531 B CN 114277531B CN 202111594044 A CN202111594044 A CN 202111594044A CN 114277531 B CN114277531 B CN 114277531B
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Abstract
The invention provides a textile rubber roller with a rubber surface convenient to replace, belongs to the technical field of rubber rollers, and is used for solving the technical problems of low rubber surface replacement speed and long time of the textile rubber roller. The device comprises a rubber roller main body and an extrusion assembly, wherein the extrusion assembly comprises two mounting cylinders, the two mounting cylinders are respectively fixed at two ends of the rubber roller main body, a rotating disc is rotatably arranged in the mounting cylinders, one end of the rotating disc is provided with plane threads, the other end of the rotating disc is fixedly provided with a dish-shaped gear, a plurality of rotating bevel gears are rotatably arranged in the mounting cylinders, one end of the mounting cylinder is provided with three adjusting grooves, lifting plates are slidably arranged on the adjusting grooves at corresponding positions of the two mounting cylinders, a replacement assembly is arranged above the lifting plates, the other end of the mounting cylinder is fixedly provided with a mounting cover, and a connecting assembly is arranged on the mounting cylinders; according to the invention, the fixing cylinder and the laminating layer can be quickly replaced by matching the extrusion assembly and the replacement assembly, so that the time required by laminating the textile rubber roller is reduced.
Description
Technical Field
The invention belongs to the technical field of rubber rollers, and relates to a textile rubber roller with a rubber surface convenient to replace.
Background
The rubber roller is a stick-shaped product which is manufactured by taking metal or other materials as a core and vulcanizing rubber covered outside. The method can be divided into the following according to the application: paper making rubber rolls, printing rubber rolls and the like can be classified into: the utility model relates to a plain-barreled roll and a patterned rubber roll, which relates to more industries and has wider use.
The rubber surface and the rubber roller main body of the common rubber roller are generally of an integral structure, and the rubber surface is attached to the outer surface of the rubber roller main body; through long-time use, lead to the rubber face can produce certain wearing and tearing, cause the rubber roll unable to continue to use, need carry out the tectorial membrane again to the rubber roll, need a large amount of time, simultaneously, because rubber face friction when the rubber roll uses, produce a large amount of heats easily, current rubber roll only through inside water-cooling, lead to the cooling effect to reduce, reduced the life of rubber face, consequently, we propose a textile rubber roll convenient to change rubber face.
Disclosure of Invention
The invention aims at solving the problems in the prior art, and provides a textile rubber roller with a rubber surface convenient to replace, which aims at solving the technical problems that: how to quickly replace the rubber surface of the spinning rubber roller.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a textile rubber roller convenient to change rubber face, includes rubber roller main part and extrusion subassembly, extrusion subassembly includes two installation barrels, two installation barrels are fixed respectively at the both ends of rubber roller main part, and two installation barrels are symmetrical each other, the inside rotation of installation barrel is provided with the rolling disc, planar screw thread has been seted up to the one end of rolling disc, the other end of rolling disc is fixed with dish gear, the inside rotation of installation barrel is provided with a plurality of bevel gears that rotate, bevel gear and dish gear engagement rotate, three regulating tank has been seted up to the one end of installation barrel, three regulating tank is the chevron shape, slide on the regulating tank of two installation barrels corresponding positions and be provided with the lifter plate, the top of lifter plate is provided with the change subassembly, the other end of installation barrel is fixed with the installation lid, be provided with coupling assembling on the installation barrel.
The working principle of the invention is as follows: when the rubber surface of the rubber roller is damaged, the bevel gear is rotated through a tool, the bevel gear is rotated to drive the bevel gear to rotate, the bevel gear drives the rotating disc to rotate, the rotating disc drives the plane threads to rotate, the plane threads drive the lifting plate to retract inwards, the lifting plate releases the extrusion fixation of the replacement assembly, the lifting plate is adjusted again, the lifting plate releases the clamping of the replacement assembly, the damaged replacement assembly is pulled out of the rubber roller main body, the novel replacement assembly is sleeved on the rubber roller main body, the bevel gear is rotated reversely through the tool, the bevel gear is rotated to drive the bevel gear to rotate reversely, the bevel gear drives the rotating disc to rotate reversely, the rotating disc drives the plane threads to rotate reversely, the plane threads drive the lifting plate to move, the lifting plate extrudes and fix the replacement assembly, the lifting plate is adjusted again, the lifting plate clamps the replacement assembly, cooling water is injected into the connection assembly, the cooling water is conveyed to the rubber roller main body, and the rubber roller main body sprays and cools the inside the replacement assembly.
The inside of rubber roll main part has seted up the water delivery hole, and a plurality of water supply tanks have been seted up to the side of rubber roll main part, and the water supply tank all communicates with the water delivery hole, and the top of water supply tank all is provided with the shower nozzle, and three lift groove has been seted up to the rubber roll main part side, and three lifter plate slides and sets up in the lift inslot of corresponding position.
By adopting the structure, the cooling water is conveyed to the inside of the water conveying hole, the cooling water is conveyed to the inside of the water supply tank again, the water supply tank conveys the cooling water to the spray head, and the spray head conveys the cooling water to the inside of the replacement assembly, so that the replacement assembly is cooled.
The lifting device is characterized in that sliding grooves are formed in the upper portion of each lifting plate, one of the sliding grooves is internally provided with a bidirectional threaded rod in a rotating mode, two ends of each bidirectional threaded rod penetrate through the lifting plates, two first extrusion plates are slidably arranged in the sliding grooves and are in threaded connection with the bidirectional threaded rods, sliding rods are fixedly arranged in the two sliding grooves, two second extrusion plates are slidably arranged on the sliding rods, a synchronous ring is arranged on the first extrusion plates and the second extrusion plates on the same side, a plurality of sliding holes are formed in the upper portion of each synchronous ring, the first extrusion plates and the second extrusion plates are slidably arranged on the corresponding sliding holes, the two ends of each lifting plate are provided with threaded grooves, and the threaded grooves are in threaded fit connection with the plane.
By adopting the structure, the end part of the bidirectional threaded rod is rotated by the tool, the bidirectional threaded rod drives the first extrusion plate to move, the first extrusion plate drives the synchronizing ring to move, the synchronizing ring drives the second extrusion plate to move, and the first extrusion plate and the second extrusion plate extrude and clamp the two ends of the replacement assembly.
The connecting assembly comprises a water inlet pipe, the outer side of the water inlet pipe is fixedly provided with a mounting shaft, the end part of the mounting shaft is fixed on the mounting cover, the water inlet pipe sequentially penetrates through the mounting cover, the rotating disc and the mounting cylinder, the end part of the water inlet pipe is connected with the end part of the rubber roller main body, and the water inlet pipe is communicated with the water delivery hole.
By adopting the structure, the cooling water is conveyed into the water inlet pipe, and the water inlet pipe conveys the cooling water into the water conveying hole.
The replacement assembly comprises a fixed cylinder, a plurality of joint grooves uniformly distributed on the circumference are formed in the fixed cylinder, the lifting plate is abutted against the joint grooves at the corresponding positions, and a glue coating layer is arranged above the fixed cylinder.
By adopting the structure, the fixed cylinder is sleeved on the rubber roller main body, and the lifting plate is inserted into the opposite joint groove at the corresponding position, so that the fixed cylinder is extruded and fixed.
Compared with the prior art, the textile rubber roller with the rubber surface convenient to replace has the following advantages:
1. the fixing cylinder and the laminating layer can be quickly replaced by matching the extrusion assembly with the replacement assembly, so that the time required by laminating the textile rubber roller is reduced;
2. the rubber roll main part and coupling assembling cooperation can spray cooling water to the inside of fixed section of thick bamboo to reduce the temperature of fixed section of thick bamboo, the rethread fixed section of thick bamboo is cooled down the rubberizing layer, thereby has prolonged the life of rubberizing layer.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the present invention in partial cutaway;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic perspective view of a portion of the components of the present invention;
in the figure: 1. a mounting shaft; 2. a mounting cover; 3. coating an adhesive layer; 4. a synchronizing ring; 5. rotating the bevel gear; 6. a water inlet pipe; 7. a mounting cylinder; 8. a thread groove; 9. a lifting groove; 10. a lifting plate; 11. a water supply tank; 12. a rubber roll body; 13. a planar thread; 14. a sliding hole; 15. a spray head; 16. a water delivery hole; 17. a disk gear; 18. a sliding groove; 19. a fixed cylinder; 20. a rotating disc; 21. a two-way threaded rod; 22. a first pressing plate; 23. and a second pressing plate.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.
In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.
Referring to fig. 1-4, the present embodiment provides a textile rubber roll with a rubber surface convenient to replace, including a rubber roll main body 12 and an extrusion component, the extrusion component includes two mounting barrels 7, the two mounting barrels 7 are respectively fixed at two ends of the rubber roll main body 12, the two mounting barrels 7 are symmetrical to each other, a rotating disc 20 is rotatably arranged in the mounting barrels 7, one end of the rotating disc 20 is provided with a plane thread 13, the other end of the rotating disc 20 is fixed with a dish-shaped gear 17, the inside of the mounting barrels 7 is rotatably provided with a plurality of rotating bevel gears 5, the rotating bevel gears 5 are meshed with the dish-shaped gear 17, one end of the mounting barrels 7 is provided with three regulating grooves, the three regulating grooves are in a herringbone shape, the regulating grooves at corresponding positions of the two mounting barrels 7 are slidably provided with lifting plates 10, the upper parts of the lifting plates 10 are provided with replacement components, the other end of the mounting barrels 7 is fixedly provided with a mounting cover 2, and the mounting barrels 7 are provided with connection components; when the rubber surface of the rubber roll is damaged, the rotary bevel gear 5 is rotated through a tool, the rotary bevel gear 5 drives the disc-shaped gear 17 to rotate, the disc-shaped gear 17 drives the rotary disc 20 to rotate, the rotary disc 20 drives the plane thread 13 to rotate, the plane thread 13 drives the lifting plate 10 to retract inwards, the lifting plate 10 releases the extrusion fixation of the replacement component, the lifting plate 10 is adjusted again, the lifting plate 10 releases the clamping of the replacement component, the damaged replacement component is pulled out of the rubber roll main body 12, the brand-new replacement component is sleeved on the rubber roll main body 12, the rotary bevel gear 5 is reversely rotated through the tool, the rotary bevel gear 5 drives the disc-shaped gear 17 to reversely rotate, the disc-shaped gear 17 drives the rotary disc 20 to reversely rotate, the plane thread 13 drives the lifting plate 10 to move, the lifting plate 10 extrudes and fixes the replacement component, the lifting plate 10 is adjusted again, the lifting plate 10 clamps the replacement component, cooling water is injected into the connection component, the connection component conveys the cooling water to the rubber roll main body 12, and the rubber roll main body 12 sprays the inside of the replacement component.
A water delivery hole 16 is formed in the rubber roll main body 12, a plurality of water supply grooves 11 are formed in the side face of the rubber roll main body 12, the water supply grooves 11 are communicated with the water delivery hole 16, spray heads 15 are arranged above the water supply grooves 11, three lifting grooves 9 are formed in the side face of the rubber roll main body 12, and three lifting plates 10 are slidably arranged in the lifting grooves 9 at corresponding positions; the cooling water is conveyed to the inside of the water conveying hole 16, the cooling water is conveyed to the inside of the water supply tank 11 again, the water supply tank 11 conveys the cooling water to the spray head 15, and the spray head 15 conveys the cooling water to the inside of the replacement assembly, so that the replacement assembly is cooled.
The upper part of the lifting plate 10 is provided with sliding grooves 18, the inside of one sliding groove 18 is rotatably provided with a bidirectional threaded rod 21, two ends of the bidirectional threaded rod 21 penetrate through and extend out of the lifting plate 10, the inside of the sliding groove 18 is slidably provided with two first extrusion plates 22, the two first extrusion plates 22 are in threaded connection with the bidirectional threaded rod 21, the inside of the two sliding grooves 18 is fixedly provided with sliding rods, the sliding rods are slidably provided with two second extrusion plates 23, the first extrusion plates 22 and the second extrusion plates 23 on the same side are provided with synchronous rings 4, the upper part of each synchronous ring 4 is provided with a plurality of sliding holes 14, the first extrusion plates 22 and the second extrusion plates 23 are slidably arranged on the sliding holes 14 at corresponding positions, the two ends of the lifting plate 10 are respectively provided with a thread groove 8, and the thread grooves 8 are in matched connection with the plane threads 13; through the tip of instrument rotation two-way threaded rod 21, two-way threaded rod 21 drives first stripper plate 22 and removes, and first stripper plate 22 drives synchronizer ring 4 and removes, and synchronizer ring 4 drives second stripper plate 23 and removes, and first stripper plate 22 and second stripper plate 23 press from both sides tight to changing the subassembly both ends.
The connecting assembly comprises a water inlet pipe 6, a mounting shaft 1 is fixed on the outer side of the water inlet pipe 6, the end part of the mounting shaft 1 is fixed on the mounting cover 2, the water inlet pipe 6 sequentially penetrates through the mounting cover 2, the rotating disc 20 and the mounting cylinder 7, the end part of the water inlet pipe 6 is connected to the end part of the rubber roller main body 12, and the water inlet pipe 6 is communicated with the water delivery hole 16; the cooling water is supplied to the inside of the water inlet pipe 6, and the water inlet pipe 6 supplies the cooling water to the inside of the water delivery hole 16.
The replacement assembly comprises a fixed cylinder 19, a plurality of joint grooves uniformly distributed on the circumference are formed in the fixed cylinder 19, the lifting plate 10 is abutted against the joint grooves at the corresponding positions, and a glue-coated layer 3 is arranged above the fixed cylinder 19; the fixed cylinder 19 is sleeved on the rubber roller main body 12, and the lifting plate 10 is inserted into the opposite joint groove at the corresponding position, so that the fixed cylinder 19 is extruded and fixed.
In this embodiment, the fixing methods are the simplest common fixing methods in the field, such as welding and bolting.
The working principle of the invention is as follows:
when the rubber surface of the rubber roller is damaged, the rotary bevel gear 5 is rotated by a tool, the rotary bevel gear 5 drives the dish-shaped gear 17 to rotate, the dish-shaped gear 17 drives the rotary disk 20 to rotate, the rotary disk 20 drives the plane thread 13 to rotate, the plane thread 13 drives the lifting plate 10 to shrink inwards, the lifting plate 10 is pulled out of the opposite joint groove at the corresponding position, the extrusion fixation of the fixed cylinder 19 is released, the end part of the bidirectional threaded rod 21 is rotated by the tool, the bidirectional threaded rod 21 drives the first extrusion plate 22 to move, the first extrusion plate 22 drives the synchronous ring 4 to move, the synchronous ring 4 drives the second extrusion plate 23 to move, the first extrusion plate 22 and the second extrusion plate 23 release the extrusion clamping of the fixed cylinder 19, the damaged fixed cylinder 19 is pulled out of the rubber roller main body 12, the brand-new fixed cylinder 19 is sleeved on the rubber roller main body 12, the bevel gear 5 is reversely rotated by the tool rotation, the bevel gear 5 rotates to drive the bevel gear 17 to rotate reversely, the bevel gear 17 drives the rotating disc 20 to rotate reversely, the rotating disc 20 drives the plane thread 13 to rotate reversely, the plane thread 13 drives the lifting plate 10 to move, the lifting plate 10 is inserted into the opposite joint groove at the corresponding position, thereby extruding and fixing the fixed cylinder 19, the end part of the bidirectional threaded rod 21 is rotated by a tool, the bidirectional threaded rod 21 drives the first extruding plate 22 to move, the first extruding plate 22 drives the synchronizing ring 4 to move, the synchronizing ring 4 drives the second extruding plate 23 to move, the first extruding plate 22 and the second extruding plate 23 extrude and clamp the two ends of the replacement assembly, cooling water is conveyed into the water inlet pipe 6, the water inlet pipe 6 conveys the cooling water into the water conveying hole 16, the cooling water is conveyed into the water supply groove 11 again, the water supply groove 11 conveys the cooling water to the spray head 15, the spray head 15 sprays the inside the fixed cylinder 19, thereby cooling the glue layer 3.
In sum, the fixing cylinder 19 and the laminating layer 3 can be quickly replaced by matching the extrusion assembly and the replacement assembly, so that the time required by laminating the textile rubber roller is reduced; the rubber roll main body 12 and the connecting component are matched, and cooling water can be sprayed into the fixed cylinder 19, so that the temperature of the fixed cylinder 19 is reduced, and the rubber coating layer 3 is cooled through the fixed cylinder 19, so that the service life of the rubber coating layer 3 is prolonged.
While the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (2)
1. The utility model provides a textile rubber roller convenient to change rubber face, including rubber roller main part (12) and extrusion subassembly, a serial communication port, extrusion subassembly includes two mounting drums (7), two mounting drums (7) are fixed respectively in the both ends of rubber roller main part (12), and two mounting drums (7) are symmetrical each other, the inside rotation of mounting drums (7) is provided with rolling disc (20), plane screw thread (13) have been seted up to one end of rolling disc (20), the other end of rolling disc (20) is fixed with dish gear (17), the inside rotation of mounting drums (7) is provided with a plurality of rotation bevel gears (5), rotation bevel gear (5) and dish gear (17) meshing, three regulating tank has been seted up to one end of mounting drums (7), three regulating tank are the chevron, slide on the regulating tank of two mounting drums (7) corresponding positions and be provided with lifter plate (10), the top of lifter plate (10) is provided with the change the subassembly, the other end of mounting drums (7) is fixed with installation lid (2), be provided with coupling assembling on mounting drums (7); the novel rubber roll comprises a rubber roll main body (12), wherein a water delivery hole (16) is formed in the rubber roll main body (12), a plurality of water supply grooves (11) are formed in the side face of the rubber roll main body (12), the water supply grooves (11) are communicated with the water delivery hole (16), spray heads (15) are arranged above the water supply grooves (11), three lifting grooves (9) are formed in the side face of the rubber roll main body (12), and three lifting plates (10) are slidably arranged in the lifting grooves (9) in corresponding positions; the lifting device is characterized in that a sliding groove (18) is formed in the upper portion of the lifting plate (10), a bidirectional threaded rod (21) is rotatably arranged in one sliding groove (18), two ends of the bidirectional threaded rod (21) penetrate through the lifting plate (10), two first extrusion plates (22) are slidably arranged in the sliding groove (18), the two first extrusion plates (22) are in threaded connection with the bidirectional threaded rod (21), sliding rods are fixedly arranged in the two sliding grooves (18), two second extrusion plates (23) are slidably arranged on the sliding rods, a synchronous ring (4) is arranged on the first extrusion plates (22) and the second extrusion plates (23) on the same side, a plurality of sliding holes (14) are formed in the upper portion of the synchronous ring (4), the first extrusion plates (22) and the second extrusion plates (23) are slidably arranged on the sliding holes (14) in corresponding positions, threaded grooves (8) are formed in the two ends of the lifting plate (10), and the threaded grooves (8) are in matched connection with plane threads (13); the replacement assembly comprises a fixed cylinder (19), a plurality of joint grooves uniformly distributed on the circumference are formed in the fixed cylinder (19), the lifting plate (10) is abutted against the joint grooves at the corresponding positions, and a glue coating layer (3) is arranged above the fixed cylinder (19).
2. The textile rubber roller with the rubber surface convenient to replace according to claim 1, wherein the connecting assembly comprises a water inlet pipe (6), a mounting shaft (1) is fixed on the outer side of the water inlet pipe (6), the end portion of the mounting shaft (1) is fixed on the mounting cover (2), the water inlet pipe (6) sequentially penetrates through the mounting cover (2), the rotating disc (20) and the mounting cylinder (7), the end portion of the water inlet pipe (6) is connected to the end portion of the rubber roller main body (12), and the water inlet pipe (6) is communicated with the water conveying hole (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111594044.8A CN114277531B (en) | 2021-12-22 | 2021-12-22 | Textile rubber roller convenient for rubber surface replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111594044.8A CN114277531B (en) | 2021-12-22 | 2021-12-22 | Textile rubber roller convenient for rubber surface replacement |
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| Publication Number | Publication Date |
|---|---|
| CN114277531A CN114277531A (en) | 2022-04-05 |
| CN114277531B true CN114277531B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111594044.8A Active CN114277531B (en) | 2021-12-22 | 2021-12-22 | Textile rubber roller convenient for rubber surface replacement |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111089114A (en) * | 2020-01-15 | 2020-05-01 | 安徽兰翔纺机科技有限公司 | Quick assembly disassembly formula weaving rubber roll |
| CN111575850A (en) * | 2020-04-30 | 2020-08-25 | 安徽兰翔纺机科技有限公司 | Fast-assembling weaving rubber roll of outer glue film of quick replacement |
| CN212250817U (en) * | 2020-04-30 | 2020-12-29 | 安徽兰翔纺机科技有限公司 | Convenient weaving rubber roll of dismouting |
| CN212959516U (en) * | 2020-07-23 | 2021-04-13 | 江苏永辉橡胶有限公司 | Rubber-covered roller with replaceable rubber surface |
| CN113307077A (en) * | 2020-01-15 | 2021-08-27 | 六安微领时代工业智能科技有限公司 | Textile rubber roll capable of being quickly disassembled and replaced with rubber layer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015033767A (en) * | 2013-08-07 | 2015-02-19 | 住友ゴム工業株式会社 | Method for manufacturing conductive rubber foam roller, conductive rubber form roller, and image forming apparatus |
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2021
- 2021-12-22 CN CN202111594044.8A patent/CN114277531B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089114A (en) * | 2020-01-15 | 2020-05-01 | 安徽兰翔纺机科技有限公司 | Quick assembly disassembly formula weaving rubber roll |
| CN113307077A (en) * | 2020-01-15 | 2021-08-27 | 六安微领时代工业智能科技有限公司 | Textile rubber roll capable of being quickly disassembled and replaced with rubber layer |
| CN111575850A (en) * | 2020-04-30 | 2020-08-25 | 安徽兰翔纺机科技有限公司 | Fast-assembling weaving rubber roll of outer glue film of quick replacement |
| CN212250817U (en) * | 2020-04-30 | 2020-12-29 | 安徽兰翔纺机科技有限公司 | Convenient weaving rubber roll of dismouting |
| CN212959516U (en) * | 2020-07-23 | 2021-04-13 | 江苏永辉橡胶有限公司 | Rubber-covered roller with replaceable rubber surface |
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| CN114277531A (en) | 2022-04-05 |
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