CN211637443U - Cleaning system of corrugated roller - Google Patents
Cleaning system of corrugated roller Download PDFInfo
- Publication number
- CN211637443U CN211637443U CN202020020589.2U CN202020020589U CN211637443U CN 211637443 U CN211637443 U CN 211637443U CN 202020020589 U CN202020020589 U CN 202020020589U CN 211637443 U CN211637443 U CN 211637443U
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- China
- Prior art keywords
- roller
- corrugated
- horizontal pole
- length direction
- single facer
- Prior art date
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- Expired - Fee Related
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- 238000004140 cleaning Methods 0.000 title claims abstract description 18
- 230000004323 axial length Effects 0.000 claims abstract description 10
- 238000007790 scraping Methods 0.000 claims abstract description 9
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000000123 paper Substances 0.000 description 25
- 239000011087 paperboard Substances 0.000 description 8
- 239000000306 component Substances 0.000 description 6
- 230000000670 limiting effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
Abstract
The utility model belongs to the technical field of corrugated paper processing equipment technique and specifically relates to a clean system of flute roller is related to, its technical scheme main points are: the corrugated roller comprises an inner roller, a plurality of outer rollers fixedly sleeved on the inner roller, and a first shaft head and a second shaft head which are fixedly arranged at two ends of the inner roller respectively, the corrugated roller is supported on the single facer through the rotation of the first shaft head and the second shaft head, a plurality of corrugated teeth are circumferentially arranged on the outer wall of the outer roller along the axial length direction of the outer roller, a cleaning assembly is arranged on the single facer, the cleaning assembly comprises a cross rod arranged on the single facer along the axial length direction of the corrugated roller, a plurality of scraping plates arranged on the cross rod at intervals along the length direction of the cross rod, and a brush arranged on the single facer, the end part of each scraping plate is inserted into a groove formed between two adjacent outer rollers, and the brush is positioned on one side of the outer roller and is abutted against the outer wall of the outer roller; the utility model has the advantages of clean corrugated roller.
Description
Technical Field
The utility model belongs to the technical field of corrugated paper processing equipment technique and specifically relates to a clean system of flute roller is related to.
Background
At present, the paper boards used in the carton packaging industry are mostly corrugated paper boards, the corrugated paper boards are formed by laminating corrugated paper and surface paper together and then laminating the corrugated paper and the surface paper, glue is coated on one of the two paper boards, and the two paper boards are pressed together through two corrugated rollers, so that the paper boards are compounded, the strength of the compounded paper boards is improved, and on one hand, the characters and patterns on color printing are convenient for introducing and publicizing packaged products, so that the laminated paper boards are widely applied. The equipment that typically produces the board is now referred to as a single facer. The corrugating roller is a core component of a single facer, the corrugated raw paper enters a corrugated channel between an upper corrugating roller and a lower corrugating roller which are heated, and a corrugated shape is formed after the corrugated raw paper is pressed and ironed at a meshing point on a central connecting line of the two corrugating rollers.
However, when the existing corrugating roller is used for hot press forming of corrugated paper, impurities or paper scraps on the corrugated paper can be adhered to the corrugating roller, and after long-term production, the impurities adhered to the corrugating roller are gradually accumulated to a great extent, so that the hot press forming of the corrugated paper is affected, and therefore improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a clean system of flute roller, this system has the advantage of carrying out cleanness to the flute roller to the not enough that prior art exists.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a cleaning system of a corrugated roller comprises a single-sided machine and the corrugated roller rotationally connected with the single-sided machine, the corrugated roller comprises an inner roller, a plurality of outer rollers fixedly sleeved on the inner roller, and a first shaft head and a second shaft head which are respectively and fixedly arranged at the two ends of the inner roller, the corrugated roller is rotatably supported on the single facer through a first shaft head and a second shaft head, the outer wall of the outer roller is circumferentially provided with a plurality of corrugated teeth along the axial length direction of the outer roller, the single facer is provided with a cleaning component, the cleaning component comprises a cross bar arranged on the single facer along the axial length direction of the corrugated roller, a plurality of scraping plates arranged on the cross bar at intervals along the length direction of the cross bar, and a brush arranged on the single facer, the end of the scraper is inserted into a groove formed between two adjacent outer rollers, and the brush is positioned on one side of the outer rollers and is abutted against the outer walls of the outer rollers.
Through adopting above-mentioned technical scheme, corrugated roller can be glued on the corrugated roller and has been covered more debris after carrying out long-time work, through setting up scraper blade and brush, when corrugated roller rotated, the scraper blade scraped out the inslot debris, and the brush will be glued under the debris brush on outer roller outer wall to corrugated roller surface's cleanness has been kept.
The present invention may be further configured in a preferred embodiment as: be provided with fastening components between horizontal pole and the single face machine, fastening components including fixed set up two location lugs on the single face machine, set up in two screw rods and the screw thread on the single face machine cup joints the nut on the screw rod, two location lugs are close to respectively in flute roller both ends, screw rod one end articulates in the single face machine surface, the bayonet socket that supplies the screw rod to rotate the grafting is all seted up on the surface that horizontal pole and location lug deviate from the single face machine, works as the horizontal pole is placed on the single face machine, the scraper blade inserts in the slot, the bayonet socket of pegging graft on horizontal pole and location lug is rotated to the screw rod, screw rod other end protrusion in the bayonet socket, the nut rotates the butt in the lateral wall.
By adopting the technical scheme, the cross rod is placed on the single-side machine, the two ends of the cross rod are respectively positioned on one side of the two positioning lugs, the cross rod is aligned with the bayonets on the positioning lugs, then the screw rod is rotated to be inserted into the bayonets on the cross rod and the positioning lugs, and the nut is rotated to be tightly abutted against the side wall of the positioning lugs to realize the fixation between the cross rod and the positioning lugs.
The present invention may be further configured in a preferred embodiment as: and a knob is fixedly arranged on the side wall of the nut.
Through adopting above-mentioned technical scheme, rotatory knob, the convenient nut of twisting of ability, this simple structure is practical.
The present invention may be further configured in a preferred embodiment as: be provided with fixed subassembly between horizontal pole and the scraper blade, fixed subassembly include along horizontal pole length direction set up a plurality of screws on the horizontal pole, fixed set up in the scraper blade is close to the fixed plate of horizontal pole one side and the bolt of screw thread through fixed plate, bolt and screw thread fit.
Through adopting above-mentioned technical scheme, because outer roller has a plurality of models, so the thickness of the outer roller of different models is often different, when outer roller cup joints on interior roller, the interval of the adjacent slot that forms between a plurality of outer rollers has the multiple, through be provided with a plurality of screws on the horizontal pole, the screw of different positions can be selected to the scraper blade when being fixed in on the horizontal pole, thereby make and have a plurality of intervals between the adjacent scraper blade, a plurality of intervals of the adjacent slot that forms between the outer roller of different models have been satisfied.
The present invention may be further configured in a preferred embodiment as: and a long waist hole is formed in the fixing plate along the length direction of the cross rod, and the bolt penetrates through the long waist hole and is in threaded fit with the screw hole.
Through adopting above-mentioned technical scheme, after unscrewing the bolt, the fixed plate can move for the screw minimumly through long waist hole to make the interval between the adjacent scraper blade can finely tune, improved required interval precision between the scraper blade.
The present invention may be further configured in a preferred embodiment as: the surface that the horizontal pole is close to the fixed plate is provided with the constant head tank, the constant head tank sets up along the length direction of horizontal pole, the fixed plate is close to the fixed surface that is close to the horizontal pole and is provided with the locating piece, the locating piece slides with the constant head tank and is connected.
By adopting the technical scheme, the positioning block is matched with the positioning groove to play a limiting role, so that the scraper cannot rotate relative to the cross rod; meanwhile, the positioning block slides in the positioning groove, and the long waist hole and the screw hole can be quickly aligned when the distance between adjacent scraping plates is adjusted due to the limiting effect of the positioning groove on the positioning block.
The present invention may be further configured in a preferred embodiment as: the part of the scraper blade inserted into the groove is fixedly provided with sponge, and the sponge is abutted against the inner wall of the groove.
Through adopting above-mentioned technical scheme, the scraper blade is when clearing up the slot, and scraper blade butt slot inner wall can cause the scratch to the corrugating roller, inserts through the scraper blade and is provided with the sponge in the part of slot, utilizes the cushioning effect of sponge to reduce the scratch that the scraper blade caused to the corrugating roller.
The present invention may be further configured in a preferred embodiment as: the single facer is last to rotate along the axial length direction of flute roller and is connected with the stock, the brush is fixed to be set up on the stock, be provided with drive stock pivoted motor on the single facer, just the rotation direction of stock is opposite with the rotation direction of flute roller.
Through adopting above-mentioned technical scheme, the brush is fixed on the stock, makes the brush more firm when clearance corrugated roller, and the stock is for corrugated roller reverse rotation for the relative speed grow between the brush that is fixed in on the stock and the corrugated roller, thereby the clearance corrugated roller that the brush can be more thorough.
The present invention may be further configured in a preferred embodiment as: the length direction of single facer edge horizontal pole is provided with the air gun, just the muzzle of air gun is towards the corrugated paper upper surface that has processed.
Through adopting above-mentioned technical scheme, after debris clearance on scraper blade and brush with the corrugating roll got off, debris can drop on the corrugated paper that has processed, through setting up air gun along the length direction of crossbeam, the muzzle towards the corrugated paper upper surface that has processed, air gun can be followed the length direction blowout of crossbeam and is gaseous blow away debris from the corrugated paper, has guaranteed the clean and tidy of corrugated paper.
To sum up, the utility model discloses a following at least one useful technological effect:
1. after the corrugated roller works for a long time, more sundries can be adhered to the corrugated roller, the scraping plate scrapes the sundries in the groove out when the corrugated roller rotates through the arrangement of the scraping plate and the hairbrush, and the hairbrush brushes down the sundries adhered to the outer wall of the outer roller, so that the surface of the corrugated roller is kept clean;
2. placing a cross rod on the single-sided machine, wherein two ends of the cross rod are respectively positioned at one side of the two positioning lugs, so that the cross rod is aligned with bayonets on the positioning lugs, then rotating a screw rod, so that the screw rod is inserted into the bayonets on the cross rod and the positioning lugs, and rotating a nut, so that the nut is tightly abutted against the side walls of the positioning lugs, thereby realizing the fixation between the cross rod and the positioning lugs;
3. after debris on scraper blade and brush with the corrugating roll cleared up, debris can drop on the corrugated paper that has processed, through setting up air gun along the length direction of crossbeam, the muzzle towards the corrugated paper upper surface that has processed, air gun can be followed the length direction blowout of crossbeam and is gaseous blow away debris from the corrugated paper, has guaranteed the clean and tidy of corrugated paper.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 2;
FIG. 3 is a schematic view of the assembly relationship between the cross bar, the scraping plate and the fixing component in the embodiment of the present invention;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3;
fig. 5 is a schematic view of the assembly relationship between the cross bar, the screw rod and the positioning protrusion in the embodiment of the present invention.
In the figure: 1. a single facer; 12. a corrugating roller; 13. an inner roller; 14. an outer roller; 141. corrugated teeth; 15. positioning the bump; 16. a screw; 17. a nut; 171. a knob; 18. a trench; 2. a cross bar; 21. a squeegee; 22. a screw hole; 23. a fixing plate; 24. a bolt; 25. a long waist hole; 26. positioning a groove; 27. positioning blocks; 28. a sponge; 3. a bayonet; 4. a long rod; 41. a brush; 42. a motor; 5. an air gun; 6. corrugated paper.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a cleaning system of corrugated roller, including single facer 1 and with single facer 1 rotate two corrugated roller 12 of upper and lower distribution of being connected, corrugated roller 12 includes interior roller 13, fix a plurality of outer rollers 14 on interior roller 13 and respectively fixed mounting in the first spindle nose and the second spindle nose at interior roller 13 both ends, corrugated roller 12 rotates through first spindle nose and second spindle nose and bears on single facer 1, outer roller 14 outer wall is fixed with many flute teeth 141 along outer roller 14's axial length direction circumference, install clean subassembly on the single facer 1.
Referring to fig. 1 and 4, specifically, the cleaning assembly includes a cross bar 2 fixedly mounted on the single facer 1 along the axial length direction of the corrugating roller 12, a plurality of scrapers 21 fixedly mounted on the cross bar 2 at intervals along the length direction of the cross bar 2, and a brush 41 mounted on the single facer 1, the end of each scraper 21 is inserted into a groove 18 formed between two adjacent outer rollers 14, a sponge 28 is fixedly bonded to a portion of each scraper 21 inserted into the groove 18, the sponge 28 abuts against the inner wall of the groove 18, and the scraping of the corrugated roller 12 by the scrapers 21 can be reduced by using the buffer action of the sponge 28.
Referring to fig. 1 and 2, the axial length direction of following corrugated roller 12 on the single facer 1 rotates and is connected with stock 4, brush 41 fixed mounting is on stock 4, brush 41 is located one side of outer roller 14 and inconsistent with the outer wall of outer roller 14, fixed mounting has drive stock 4 pivoted motor 42 on the single facer 1, and the rotation direction of stock 4 is opposite with corrugated roller 12's rotation direction, make the relative speed grow between brush 41 and the corrugated roller 12 that is fixed in on stock 4, thereby brush 41 can more thorough clearance corrugated roller 12. One side of single face machine 1 has air gun 5 along the length direction fixed mounting pole of horizontal pole 2, and air gun 5's muzzle towards the 6 upper surfaces of corrugated paper that have processed, and debris can drop on the corrugated paper 6 that have processed after getting off by the clearance, and air gun 5 can be followed the length direction blowout gas of horizontal pole 2 and blown down debris from corrugated paper 6, has guaranteed the clean and tidy of corrugated paper 6.
Referring to fig. 1 and 5, a fastening assembly is provided between the crossbar 2 and the single facer 1. Specifically, fastening components is including welding two location lug 15 on single face machine 1, install two screw rods 16 and the nut 17 of screw thread cup joint on screw rod 16 on single face machine 1, nut 17 lateral wall integrated into one piece has knob 171, two location lug 15 are close to respectively in 12 both ends of flute roller, screw rod 16 one end articulates in single face machine 1 surface, horizontal pole 2 and location lug 15 deviate from the bayonet socket 3 that supplies screw rod 16 to rotate the grafting all seted up on the surface of single face machine 1, place on single face machine 1 when horizontal pole 2, scraper blade 21 inserts in the slot 18, screw rod 16 rotates bayonet socket 3 of pegging graft on horizontal pole 2 and location lug 15, screw rod 16 other end protrusion in bayonet socket 3, rotatory knob 171, thereby make nut 17 rotate the butt in the lateral wall of location lug 15 thereby fix horizontal pole 2 and location lug 15 together.
Referring to fig. 3 and 4, a fixing assembly is provided between the crossbar 2 and the squeegee 21. Specifically, fixed subassembly includes along 2 length direction of horizontal pole to set up a plurality of screw holes 22 on horizontal pole 2, weld in scraper blade 21 and be close to the fixed plate 23 and the bolt 24 of screw through fixed plate 23 of 2 one sides of horizontal pole, long waist hole 25 has been seted up along 2 length direction of horizontal pole on the fixed plate 23, bolt 24 runs through long waist hole 25 and screw 22 screw-thread fit, horizontal pole 2 is close to the surface of fixed plate 23 and has seted up constant head tank 26, constant head tank 26 sets up along the length direction of horizontal pole 2, fixed plate 23 is close to the skin weld who is in horizontal pole 2 has locating piece 27, locating piece 27 slides with constant head tank 26. Through having seted up a plurality of screw holes 22 on horizontal pole 2, the screw hole 22 of different positions can be selected when the scraper blade 21 is fixed in on horizontal pole 2 to make have a plurality of intervals between the adjacent scraper blade 21, after unscrewing bolt 24, fixed plate 23 can remove relatively screw hole 22 minimumly through long waist hole 25, thereby makes the interval between the adjacent scraper blade 21 finely tune, has improved required interval precision between the scraper blade 21. Meanwhile, the positioning block 27 is matched with the positioning groove 26 to play a limiting role, so that the scraper 21 cannot rotate relative to the cross rod 2; in addition, the positioning block 27 slides in the positioning groove 26, and due to the limiting effect of the positioning groove 26 on the positioning block 27, the long waist hole 25 and the screw hole 22 can be quickly aligned when the distance between the adjacent scrapers 21 is adjusted.
The implementation principle of the embodiment is as follows: when the corrugating roller 12 rotates, the sponge 28 on the scraper 21 abuts against the inner wall of the groove 18 to scrape out the sundries in the groove 18, and the brush 41 brushes down the sundries stuck on the outer wall of the outer roller 14, so that the surface of the corrugating roller 12 is kept clean.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. The utility model provides a cleaning system of corrugated roller, includes single face machine (1) and rotates corrugated roller (12) of being connected with single face machine (1), corrugated roller (12) including interior roller (13), fixed cup connect in a plurality of outer rollers (14) on interior roller (13) and respectively fixed set up in the first spindle nose and the second spindle nose at interior roller (13) both ends, corrugated roller (12) rotate through first spindle nose and second spindle nose and bear on single face machine (1), the axial length direction circumference of outer roller (14) outer wall edge outer roller (14) is provided with a plurality of corrugated teeth (141), its characterized in that: be provided with clean subassembly on single face machine (1), clean subassembly includes that the axial length direction along corrugated roller (12) sets up horizontal pole (2) on single face machine (1), follows the length direction interval of horizontal pole (2) sets up a plurality of scraper blades (21) on horizontal pole (2) and sets up brush (41) in single face machine (1), the tip of scraper blade (21) inserts in slot (18) that form between two adjacent outer rollers (14), brush (41) are located one side of outer roller (14) and are inconsistent with the outer wall of outer roller (14).
2. A cleaning system for a corrugating roller as claimed in claim 1, wherein: a fastening assembly is arranged between the cross rod (2) and the single facer (1), the fastening assembly comprises two positioning convex blocks (15) fixedly arranged on the single facer (1), two screw rods (16) arranged on the single facer (1) and a nut (17) in threaded sleeve connection with the screw rods (16), the two positioning convex blocks (15) are close to two ends of the corrugated roller (12) respectively, one end of each screw rod (16) is hinged on the surface of the single facer (1), bayonets (3) for the screw rods (16) to be in rotary insertion connection with each other are arranged on the surfaces of the cross rod (2) and the positioning convex blocks (15) deviating from the single facer (1), when the cross rod (2) is placed on the single facer (1), the scraping plates (21) are inserted into the grooves (18), the screw rods (16) are in rotary insertion connection with bayonets (3) on the cross rod (2) and the positioning convex blocks (15), and the other ends of, the nut (17) is in rotary abutting connection with the side wall of the positioning lug (15).
3. A cleaning system for a corrugating roller as claimed in claim 2, wherein: and a knob (171) is fixedly arranged on the side wall of the nut (17).
4. A cleaning system for a corrugating roller as claimed in claim 1, wherein: be provided with fixed subassembly between horizontal pole (2) and scraper blade (21), fixed subassembly include along horizontal pole (2) length direction set up a plurality of screw (22) on horizontal pole (2), fixed set up in scraper blade (21) are close to fixed plate (23) and the bolt (24) that the screw thread runs through fixed plate (23) of horizontal pole (2) one side, bolt (24) and screw (22) screw-thread fit.
5. The cleaning system for a corrugating roller as claimed in claim 4, wherein: the fixing plate (23) is provided with a long waist hole (25) along the length direction of the cross rod (2), and the bolt (24) penetrates through the long waist hole (25) to be in threaded fit with the screw hole (22).
6. The cleaning system for a corrugating roller as claimed in claim 4, wherein: horizontal pole (2) are close to the surface of fixed plate (23) and are provided with constant head tank (26), the length direction setting of horizontal pole (2) is followed in constant head tank (26), fixed plate (23) are close to in the fixed surface of horizontal pole (2) and are provided with locating piece (27), locating piece (27) slide with constant head tank (26) and are connected.
7. A cleaning system for a corrugating roller as claimed in claim 1, wherein: sponge (28) are fixedly arranged on the part, inserted into the groove (18), of the scraper (21), and the sponge (28) abuts against the inner wall of the groove (18).
8. A cleaning system for a corrugating roller as claimed in claim 1, wherein: the single facer (1) is gone up and is connected with stock (4) along the rotation of the axle length direction of flute roller (12), brush (41) are fixed to be set up on stock (4), be provided with drive stock (4) pivoted motor (42) on single facer (1), just the rotation direction of stock (4) is opposite with the rotation direction of flute roller (12).
9. A cleaning system for a corrugating roller as claimed in claim 1, wherein: the length direction of single face machine (1) along horizontal pole (2) is provided with air gun (5), just the muzzle of air gun (5) is towards processed corrugated paper (6) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020020589.2U CN211637443U (en) | 2020-01-04 | 2020-01-04 | Cleaning system of corrugated roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020020589.2U CN211637443U (en) | 2020-01-04 | 2020-01-04 | Cleaning system of corrugated roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211637443U true CN211637443U (en) | 2020-10-09 |
Family
ID=72703605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020020589.2U Expired - Fee Related CN211637443U (en) | 2020-01-04 | 2020-01-04 | Cleaning system of corrugated roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211637443U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122177A (en) * | 2022-07-25 | 2022-09-30 | 潮州市潮安区乌洋纸品有限公司 | Environment-friendly corrugated roller and polishing equipment thereof |
| CN117259279A (en) * | 2023-11-22 | 2023-12-22 | 东平金马帘子布有限责任公司 | Cleaning device for roller of dipping machine |
-
2020
- 2020-01-04 CN CN202020020589.2U patent/CN211637443U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122177A (en) * | 2022-07-25 | 2022-09-30 | 潮州市潮安区乌洋纸品有限公司 | Environment-friendly corrugated roller and polishing equipment thereof |
| CN115122177B (en) * | 2022-07-25 | 2023-05-26 | 潮州市潮安区乌洋纸品有限公司 | Environment-friendly corrugated roller and polishing equipment thereof |
| CN117259279A (en) * | 2023-11-22 | 2023-12-22 | 东平金马帘子布有限责任公司 | Cleaning device for roller of dipping machine |
| CN117259279B (en) * | 2023-11-22 | 2024-01-26 | 东平金马帘子布有限责任公司 | Cleaning device for roller of dipping machine |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |