CN111118789A - Multilayer anticreep quick replacement weaving rubber roll - Google Patents
Multilayer anticreep quick replacement weaving rubber roll Download PDFInfo
- Publication number
- CN111118789A CN111118789A CN202010042286.5A CN202010042286A CN111118789A CN 111118789 A CN111118789 A CN 111118789A CN 202010042286 A CN202010042286 A CN 202010042286A CN 111118789 A CN111118789 A CN 111118789A
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- locking
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/02—Rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/02—Supporting web roll
- B65H18/04—Interior-supporting
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention provides a multilayer anti-falling quick-replacement spinning rubber roller, belongs to the technical field of spinning rubber roller equipment, and solves the problems that the rubber roller is difficult to detach and replace, and the toughness and the wear resistance are poor. This weaving rubber roll of multilayer anticreep quick replacement includes the rubber roll, locking axle and hinge, the rubber roll includes the roller core, the both ends of roller core all are provided with the connection pivot, the one side of connecting the pivot is equipped with hinge mount board one, the opposite side of connecting the pivot is equipped with locking platform one, one side of locking axle is equipped with hinge mount board two, the opposite side of locking axle is equipped with locking platform two, one page of hinge is fixed on hinge mount board one, another page of hinge is fixed on hinge mount board two, all be provided with rapid fixture on locking platform one and the locking platform two. According to the invention, the roller core is respectively matched with the connecting rotating shaft and the locking shaft, so that the rubber roller can be quickly hoisted and disassembled; the connecting rotating shaft and the locking shaft are locked by matching two quick clamps, so that the assembly and disassembly are quick and the locking is stable; the rubber roller has high toughness and good wear resistance.
Description
Technical Field
The invention belongs to the technical field of spinning rubber roller equipment, and particularly relates to a spinning rubber roller, in particular to a multilayer anti-falling quick-replacement spinning rubber roller.
Background
The rubber roller generally comprises an outer layer of rubber, a hard rubber layer, a metal core, a roller neck and a vent hole, and the processing comprises the working procedures of roller core sand blasting, bonding treatment, rubberizing forming, cloth wrapping, iron wire winding, vulcanizing in a vulcanizing tank, surface processing and the like. The rubber roller is mainly applied to the aspects of papermaking, printing and dyeing, printing, grain processing, metallurgy, plastic processing and the like.
The spinning rubber roller is used in the textile industry for printing and dyeing or batching, the spinning rubber roller is aged after being used for a period of time, and then the erosion of chemicals is added to cause the 'slag' of the rotten rubber to fall, so that the rubber roller cannot be used again, otherwise, the quality of a printed product is seriously influenced, the rubber roller needs to be replaced with a new rubber roller, the difficulty in replacing the rubber roller is very high, the precision of the rubber roller needs to be adjusted again after replacement, and the use needs a long time.
Meanwhile, the conventional rubber roller is generally characterized in that a circle of rubber layers with different diameters are coated outside a roller core, so that the abrasion resistance and the toughness are poor, and the service life of the rubber roller is influenced.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a multilayer anti-falling quick-replacement spinning rubber roller, which aims to solve the technical problems that: how to quickly and conveniently hoist and replace the worn rubber roller and improve the toughness and the wear resistance.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a weaving rubber roll of multilayer anticreep quick replacement, including rubber roll, locking axle and hinge, the rubber roll includes the roller core, the both ends of roller core all are provided with connects the pivot, one side of connecting the pivot is equipped with hinge mount board one, the opposite side of connecting the pivot is equipped with locking platform one, one side of locking axle is equipped with hinge mount board two, the opposite side of locking axle is equipped with locking platform two, one page of hinge is fixed on hinge mount board one, another page of hinge is fixed on hinge mount board two, all be provided with quick fixture on locking platform one and the locking platform two, quick fixture and locking axle closure on the locking platform one, quick fixture and the connection pivot closure on the locking platform two.
The working principle of the invention is that the end parts of the roller core of the rubber roller are respectively clamped in the connecting rotating shaft, then the rotating locking shaft is buckled at the upper end of the connecting rotating shaft, then the locking connecting rotating shaft and the locking shaft are respectively locked together by two quick clamps to form a whole spinning rubber roller, then the connecting rotating shafts at two ends are connected to a required position, when the outer layer of the rubber roller is worn and needs to be replaced, the quick clamps are released from locking with the connecting rotating shaft and the locking shaft, then the locking shaft is opened, the waste rubber roller can be directly taken out, and then a new rubber roller is replaced, so that the replacement is quick and convenient.
The rubber roll further comprises a rubber layer, an elastic layer and a wear-resistant layer, a plurality of protrusions are uniformly distributed on the roll core in the circumferential direction, the rubber layer is coated on the roll core and the protrusions, the elastic layer is arranged on the outer side of the rubber layer, and the wear-resistant layer is arranged on the outer side of the elastic layer.
By adopting the mechanism, the rubber layer, the elastic layer and the wear-resistant layer are matched, so that the toughness and the wear resistance of the rubber can be improved, the rubber has the functions of high toughness, high elasticity, wear resistance and the like, the service life of the rubber roller is prolonged, and the production cost is reduced.
And the two ends of the roller core are provided with locking grooves which are symmetrical up and down.
By adopting the mechanism, the locking groove is used for connecting and locking the connecting rotating shaft and the locking shaft.
The roller core is characterized in that a first locking lug is fixed inside the connecting rotating shaft and clamped inside the locking groove, a first rubber layer is arranged inside the connecting rotating shaft, the inner diameter of the first rubber layer is larger than the outer diameter of the roller core, the first locking lug penetrates through the first rubber layer, a first locking block is fixed on one side of the upper end of a first locking platform, a first locking wedge-shaped hole is formed in the first locking block, and a first notch is formed in the other side of the upper end of the first locking platform.
By adopting the mechanism, the inner diameter of the rubber layer I is smaller than the outer diameter of the roller core and is used for locking the roller core and increasing the friction force, and the locking lug I is clamped in the locking groove and is used for providing the rotating force.
The locking device is characterized in that a second locking lug is fixed inside the locking shaft and clamped inside the locking groove, a second rubber layer is arranged inside the locking shaft, the inner diameter of the second rubber layer is smaller than the outer diameter of the roller core, the second locking lug penetrates through the second rubber layer, a second locking block is fixed on one side of the upper end of the second locking platform, a second locking wedge-shaped hole is formed in the second locking block, and a second gap is formed in the other side of the upper end of the second locking platform.
By adopting the mechanism, the inner diameter of the rubber layer II is smaller than the outer diameter of the roller core, so that the roller core is locked, the friction force is increased, and the locking lug II is clamped in the locking groove and used for providing a rotating force.
The first locking block is located inside the second notch, and the second locking block is located inside the first notch.
By adopting the mechanism, the first locking block penetrates through the second notch to be locked with the quick clamp on the second locking platform, and the second locking block penetrates through the first notch to be locked with the quick clamp on the first locking platform.
And a locking wedge block is installed at the locking sliding end part of the quick clamp, and a locking screw is arranged on the side surface of the locking wedge block.
By adopting the mechanism, the locking wedge block is respectively matched with the first locking block and the second locking block and used for locking the connecting rotating shaft and the locking shaft together, and the locking screw is used for disassembling and assembling the locking wedge block.
The locking wedge block is arranged in the first locking wedge hole and the second locking wedge hole in a sliding mode respectively.
By adopting the mechanism, the locking sliding end part of the rapid clamp pulls the locking wedge block inwards, the locking wedge block is matched with the first locking wedge hole and the second locking wedge hole, the locking wedge block is pulled inwards, and the first locking block and the upward end of the locking block are pulled, so that the connecting rotating shaft and the locking shaft are locked together.
Compared with the prior art, this multilayer anticreep quick replacement weaving rubber roll has following advantage:
1. according to the invention, the roller core is respectively matched with the connecting rotating shaft and the locking shaft, so that the rubber roller can be quickly hoisted and disassembled, and the replacement is quicker;
2. two rapid clamps are adopted between the connecting rotating shaft and the locking shaft for matching and locking, redundant disassembly and assembly are not needed, the installation is convenient, the locking is stable, and the time is saved;
3. the rubber roller provided by the invention adopts the matching of the rubber layer, the elastic layer and the wear-resistant layer, so that the toughness and the wear resistance of the rubber can be improved, the rubber roller has the functions of high toughness, high elasticity, wear resistance and the like, the service life of the rubber roller is prolonged, and the production cost is reduced.
Drawings
FIG. 1 is a schematic perspective view of the present invention in a closed state;
FIG. 2 is a schematic perspective view of the present invention in an open state;
FIG. 3 is a schematic diagram of a partially exploded structure of the present invention;
FIG. 4 is a schematic cross-sectional structure of the present invention;
in the figure: the rubber roller comprises a rubber roller 1, a roller core 1a, a locking groove 1b, a protrusion 1c, a rubber layer 1d, an elastic layer 1e, a wear-resistant layer 1f, a connecting rotating shaft 2, a hinge mounting plate 2a, a locking lug 2b, a locking platform 2c, a locking block 2d, a locking wedge hole 2e, a notch 2f, a locking shaft 3, a hinge mounting plate 3a, a locking lug 3b, a locking platform 3c, a locking block 3d, a locking wedge hole 3e, a notch 3f, a quick clamp 4, a locking wedge 4a, a locking screw 4b and a hinge 5.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1-4, in the present embodiment, a multi-layer anti-drop quick-change spinning rubber roll is provided, which includes a rubber roll 1, a locking shaft 3 and a hinge 5, where the rubber roll 1 includes a roll core 1a, two ends of the roll core 1a are both provided with a connection rotation shaft 2, one side of the connection rotation shaft 2 is provided with a hinge mounting plate one 2a, the other side of the connection rotation shaft 2 is provided with a locking platform one 2c, one side of the locking shaft 3 is provided with a hinge mounting plate two 3a, the other side of the locking shaft 3 is provided with a locking platform two 3c, and one page of the hinge 5 is fixed on the hinge mounting plate one 2a, in the present embodiment, the fixing manner is screw connection, and the other page of the hinge 5 is fixed on the hinge mounting plate two 3a, in the present embodiment, the fixing manner is screw connection, and the locking platform one, the quick clamp 4 is an existing product and can be purchased directly, the specific structure is not described in detail, the quick clamp 4 on the locking platform I2 c is locked with the locking shaft 3, and the quick clamp 4 on the locking platform II 3c is locked with the connecting rotating shaft 2; the end parts of the roller cores 1a of the rubber rollers 1 are clamped inside the connecting rotating shafts 2 respectively, then the locking shafts 3 are rotated to be buckled at the upper ends of the connecting rotating shafts 2, then the locking connecting rotating shafts 2 and the locking shafts 3 are locked together by two rapid fixtures 4 respectively to form a whole textile rubber roller, then the connecting rotating shafts 2 at the two ends are connected to a required position, when the outer layer of the rubber roller 1 is used, abrasion is generated, and when the rubber roller is required to be replaced, the rapid fixtures 4 are unlocked with the connecting rotating shafts 2 and the locking shafts 3, then the locking shafts 3 are opened, the waste rubber rollers 1 can be directly taken out, and then the new rubber rollers 1 are replaced quickly and conveniently.
The rubber roller 1 further comprises a rubber layer 1d, an elastic layer 1e and a wear-resistant layer 1f, a plurality of protrusions 1c which are uniformly distributed on the circumference are arranged on the roller core 1a, the rubber layer 1d is coated on the roller core 1a and the protrusions 1c, the elastic layer 1e is arranged on the outer side of the rubber layer 1d, and the wear-resistant layer 1f is arranged on the outer side of the elastic layer 1 e; the rubber layer 1d, the elastic layer 1e and the wear-resistant layer 1f are matched, so that the toughness and the wear resistance of the rubber can be improved, the rubber has the functions of high toughness, high elasticity, wear resistance and the like, the service life of the rubber roller is prolonged, and the production cost is reduced.
Both ends of the roller core 1a are provided with locking grooves 1b which are symmetrical up and down; the locking groove 1b is used for connecting and locking the rotating shaft 2 and the locking shaft 3.
A first locking bump 2b is fixed inside the connecting rotating shaft 2, in the embodiment, the fixing mode adopts welding, the first locking bump 2b is clamped inside the locking groove 1b, a first rubber layer is arranged inside the connecting rotating shaft 2, the inner diameter of the first rubber layer is larger than the outer diameter of the roller core 1a, the first locking bump 2b penetrates through the first rubber layer, a first locking block 2d is fixed on one side of the upper end of a first locking platform 2c, in the embodiment, the fixing mode adopts welding, a first locking wedge-shaped hole 2e is formed in the first locking block 2d, and a first notch 2f is formed in the other side of the upper end of the first locking platform 2 c; the inner diameter of the first rubber layer is smaller than the outer diameter of the roller core 1a, so that the roller core 1a is locked to increase friction force, and the first locking lug 2b is clamped inside the locking groove 1b and used for providing rotating force.
A second locking lug 3b is fixed inside the locking shaft 3, in the embodiment, the fixing mode adopts welding, the second locking lug 3b is clamped inside the locking groove 1b, a second rubber layer is arranged inside the locking shaft 3, the inner diameter of the second rubber layer is smaller than the outer diameter of the roller core 1a, the second locking lug 3b penetrates through the second rubber layer, a second locking block 3d is fixed on one side of the upper end of the second locking platform 3c, in the embodiment, the fixing mode adopts welding, a second locking wedge-shaped hole 3e is formed in the second locking block 3d, and a second gap 3f is formed in the other side of the upper end of the second locking platform 3 c; the inner diameter of the second rubber layer is smaller than the outer diameter of the roller core 1a, so that the roller core 1a is locked, friction is increased, and the second locking lug 3b is clamped inside the locking groove 1b and used for providing rotating force.
The first locking block 2d is positioned inside the second notch 3f, and the second locking block 3d is positioned inside the first notch 2 f; the first locking block 2d penetrates through the second notch 3f to be locked with the quick clamp 4 on the second locking platform 3c, and the second locking block 3d penetrates through the first notch 2f to be locked with the quick clamp 4 on the first locking platform 2 c.
A locking wedge block 4a is installed at the locking sliding end part of the rapid clamp 4, and a locking screw 4b is arranged on the side surface of the locking wedge block 4 a; the locking wedge block 4a is matched with the first locking block 2d and the second locking block 3d respectively and used for locking the connecting rotating shaft 2 and the locking shaft 3 together, and the locking screw 4b is used for disassembling and assembling the locking wedge block 4 a.
The locking wedge block 4a is respectively arranged in the first locking wedge hole 2e and the second locking wedge hole 3e in a sliding mode; the locking sliding end part of the rapid clamp 4 pulls the locking wedge block 4a inwards, the locking wedge block 4a is matched with the first locking wedge hole 2e and the second locking wedge hole 3e, the locking wedge block 4a is pulled inwards, and the first locking block 2d and the second locking block 3d are pulled to one upward end, so that the connecting rotating shaft 2 and the locking shaft 3 are locked together.
The working principle of the invention is as follows:
placing two ends of a roller core 1a of a rubber roller 1 into a rubber layer I connected with a rotating shaft 2, clamping a locking groove 1b on a locking lug I2 b, then rotating a locking shaft 3 around a hinge 5 to be closed at the upper end of the roller core 1a, enabling a locking block I2 d to pass through a gap II 3f, pushing a quick clamp 4 on a locking platform I2 c, enabling a sliding end of the quick clamp 4 to pass through a locking wedge hole II 3e of a locking block II 3d, placing a locking wedge block 4a at the sliding end, then fastening the locking wedge block 4a by using a locking screw 4b, reversely pulling the quick clamp 4 on the locking platform I2 c, pulling the locking wedge block 4a into the locking wedge hole II 3e, moving the locking wedge block 4a upwards when pulling, locking the locking wedge block I and the rotating shaft 2 with the locking shaft 3 together, pulling the quick clamp 4 to be self-locked to the maximum extent, enabling a rubber layer II to abut against the roller core 1a, the second locking bump 3b is clamped in the locking groove 1b, meanwhile, the second locking block 3d penetrates through the first notch 2f, the quick clamp 4 on the second locking platform 3c is locked, the sliding end of the quick clamp 4 penetrates through the first locking wedge hole 2e of the first locking block 2d, the locking wedge block 4a is placed at the sliding end, then the locking wedge block 4a is fastened by using a locking screw 4b, the quick clamp 4 on the second locking platform 3c is pulled reversely, the locking wedge block 4a is pulled into the first locking wedge hole 2e, when the locking wedge block 4a is pulled, the locking wedge block 4a moves downwards, the two connecting rotating shaft 2 and the locking shaft 3 are locked together, the quick clamp 4 is pulled to be self-locked to the maximum degree, the rubber layer two abuts against the roller core 1a, and the second locking bump 3b is clamped in the locking groove 1 b.
Form a weaving rubber roll wholly, then with the connection pivot 2 at both ends be connected to the position that needs (like in the bearing frame) can, use when rubber roll 1 through a period, produce wearing and tearing, when needing to be changed, remove quick fixture 4 and the closure of connecting pivot 2 and locking shaft 3, open locking shaft 3, will old and useless rubber roll 1 take out, then change new rubber roll 1, it is convenient to change, need not dismantle the connection pivot 2 at both ends, also need the precision in later stage to adjust, and is more convenient and fast.
The invention provides a multilayer anti-drop quick-replacement spinning rubber roll.A roll core 1a is respectively matched with a connecting rotating shaft 2 and a locking shaft 3, so that the rubber roll 1 can be quickly hoisted and disassembled, and the replacement is quicker; two rapid clamps 4 are matched and locked between the connecting rotating shaft 2 and the locking shaft 3, redundant disassembly and assembly are not needed, the installation is convenient, the locking is stable, and the time is saved; the rubber roller 1 disclosed by the invention adopts the matching of the rubber layer 1d, the elastic layer 1e and the wear-resistant layer 1f, so that the toughness and the wear resistance of the rubber can be improved, the rubber roller has the functions of high toughness, high elasticity, wear resistance and the like, the service life of the rubber roller is prolonged, and the production cost is reduced.
Although 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 can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (8)
1. The utility model provides a multilayer anticreep quick replacement weaving rubber roll, including rubber roll (1), locking axle (3) and hinge (5), a serial communication port, rubber roll (1) includes roller core (1a), the both ends of roller core (1a) all are provided with connection pivot (2), one side of connecting pivot (2) is equipped with hinge mounting board (2a), the opposite side of connecting pivot (2) is equipped with locking platform (2c), one side of locking axle (3) is equipped with hinge mounting board two (3a), the opposite side of locking axle (3) is equipped with locking platform two (3c), one page of hinge (5) is fixed on hinge mounting board one (2a), another page of hinge (5) is fixed on hinge mounting board two (3a), all be provided with quick fixture (4) on locking platform one (2c) and locking platform two (3c), quick fixture (4) on the locking platform one (2c) and locking axle (3) closure, and a quick clamp (4) on the second locking platform (3c) is locked with the connecting rotating shaft (2).
2. The multi-layer anti-drop quick-change textile rubber roll according to claim 1, wherein the rubber roll (1) further comprises a rubber layer (1d), an elastic layer (1e) and a wear-resistant layer (1f), a plurality of protrusions (1c) are uniformly distributed on the roll core (1a) in the circumferential direction, the rubber layer (1d) is coated on the roll core (1a) and the protrusions (1c), the elastic layer (1e) is arranged on the outer side of the rubber layer (1d), and the wear-resistant layer (1f) is arranged on the outer side of the elastic layer (1 e).
3. The multilayer anti-drop quick-change spinning rubber roll according to claim 2, characterized in that both ends of the roll core (1a) are provided with locking grooves (1b) which are symmetrical up and down.
4. The multilayer anti-drop quick-change spinning rubber roll according to claim 3, characterized in that a first locking lug (2b) is fixed inside the connecting rotating shaft (2), the first locking lug (2b) is clamped inside the locking groove (1b), a first rubber layer is arranged inside the connecting rotating shaft (2), the inner diameter of the first rubber layer is larger than the outer diameter of the roll core (1a), the first locking lug (2b) penetrates through the first rubber layer, a first locking block (2d) is fixed on one side of the upper end of the first locking platform (2c), a first locking wedge hole (2e) is formed in the first locking block (2d), and a first notch (2f) is formed in the other side of the upper end of the first locking platform (2 c).
5. The multilayer anti-drop quick-change spinning rubber roll according to claim 4, characterized in that a second locking lug (3b) is fixed inside the locking shaft (3), the second locking lug (3b) is clamped inside the locking groove (1b), a second rubber layer is arranged inside the locking shaft (3), the inner diameter of the second rubber layer is smaller than the outer diameter of the roll core (1a), the second locking lug (3b) penetrates through the second rubber layer, a second locking block (3d) is fixed on one side of the upper end of the second locking platform (3c), a second locking wedge-shaped hole (3e) is formed in the second locking block (3d), and a second notch (3f) is formed in the other side of the upper end of the second locking platform (3 c).
6. The multi-layer anti-drop quick-change spinning rubber roll according to claim 5, wherein the first locking block (2d) is located inside the second notch (3f), and the second locking block (3d) is located inside the first notch (2 f).
7. The multilayer anti-drop quick-change spinning rubber roll according to claim 5, characterized in that a locking wedge block (4a) is mounted at the locking sliding end of the quick clamp (4), and a locking screw (4b) is arranged on the side surface of the locking wedge block (4 a).
8. The multilayer anti-drop quick change spinning rubber roll according to claim 7, characterized in that the locking wedge block (4a) is slidably arranged inside the locking wedge hole I (2e) and the locking wedge hole II (3e), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042286.5A CN111118789B (en) | 2020-01-15 | 2020-01-15 | Multilayer anticreep quick replacement weaving rubber roll |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042286.5A CN111118789B (en) | 2020-01-15 | 2020-01-15 | Multilayer anticreep quick replacement weaving rubber roll |
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| CN111118789A true CN111118789A (en) | 2020-05-08 |
| CN111118789B CN111118789B (en) | 2022-03-18 |
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| KR20030073430A (en) * | 2002-03-11 | 2003-09-19 | 정남용 | Roller assembling a bush for dyeing machine |
| CN104118749A (en) * | 2014-07-14 | 2014-10-29 | 江苏辰光纸箱机械制造有限公司 | Paper feeding rubber roller capable of being replaced quickly |
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| CN111118789B (en) | 2022-03-18 |
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