CN101417291A - Surface foreign matter clearing device on rubber roll - Google Patents
Surface foreign matter clearing device on rubber roll Download PDFInfo
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- CN101417291A CN101417291A CNA2008100799860A CN200810079986A CN101417291A CN 101417291 A CN101417291 A CN 101417291A CN A2008100799860 A CNA2008100799860 A CN A2008100799860A CN 200810079986 A CN200810079986 A CN 200810079986A CN 101417291 A CN101417291 A CN 101417291A
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- rubber roll
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- knife bar
- blade
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Abstract
The invention discloses a device for removing foreign matters on the surface of a rubber roller, which comprises a cutter bar and a cutter blade. The cutter blade is arranged on the cutter bar; the device is characterized in that a cutter clamp is arrange on the cutter bar, the cutter blade is tightly fixed at the jaw of the cutter clamp and is the ethyl carbamate blade with the edge in parallel with the axis of the rubber roller; an included angle between the outer edge surface back to the rubber roller and the tangent of the contact point of the rubber roller is 30-50 degrees, the included angle between the outer edge surface and the inner edge surface facing to the rubber roller is 15-30 degrees; two ends of the cutter bar are arranged on the axel base of an chassis, the distance between the axis of the cutter bar and the surface of the rubber roller is smaller than that between the axis of the cutter bar and the edge; and a rotation control mechanism of the cutter bar is arranged on the chassis and connected with one end of the cutter bar. The invention has good removal effect and convenient operation.
Description
Technical field
The present invention relates to a kind of method and apparatus of removing surface foreign matter on rubber roll, specifically is a kind of device of removing the surface foreign matter on rubber roll of stainless steel cold rolling mill.
Background technology
According to the stainless steel market trend, stainless steel cold-rolled plate just progressively tends to thin normalization, and the output of thin specification stainless steel cold-rolled plate increases progressively month by month, especially less than the 1.0mm thin slab product.But can produce trickle iron filings, paper scrap, fiber felt hair phenomenon such as come off in operations such as finished products, pickling, smooth, reconditioning and rip cuttings less than the 1.0mm thin slab product, add oil stain, dust granule etc., be attached on the rubber roll roll surface that contacts with steel band, contact with steel band at bigger tension force lower roll surface, make surface of steel plate produce defectives such as many tiny load moulds, scratch, bright spot, have a strong impact on plate surface quality.For avoiding roll surface that plate surface quality is impacted, unit is stopped, manually with the sticking alcohol wipe of cotton, both doing like this wastes time and energy, influence the unit production capacity again, some fine impurities manually can't thoroughly be cleaned out, and cleaning effect is bad and dangerous very big.In other enterprises of producing stainless steel, Japan once adopted manually holds metal blade and gently scrapes the metal roll surface, sticks foreign matter, the defective that causes the surface of steel plate foreign matter to be pressed into to solve roll surface.The Pu item once adopted the bala gutta roller, and the contact belt steel surface to glue the way of belt steel surface foreign matter, avoids the surface of steel plate foreign matter to be pressed into generation of defects.The producer that also has adopts the way of Electrostatic Absorption to remove the belt steel surface foreign matter.The applicant once adopted the method for negative pressure suction to clear up attached to the fiber hair on the surface of steel plate.Every kind of method is just at indivedual foreign matters, and the bala gutta roller makes glue attached to influencing quality on the steel plate easily, holds metal blade by hand and scrapes that the roller effect is bad, operation easier big and have danger, and the negative pressure suction can only siphon away light foreign matter.
Summary of the invention
In order to overcome the existing above-mentioned deficiency of removing the method and apparatus of surface foreign matter on rubber roll, the invention provides a kind of device of removing the good and removing surface foreign matter on rubber roll being convenient to operate of rubber roll surface effect.
The method of this removing surface foreign matter on rubber roll is to remove the foreign matter on rubber roll surface with the edge of a knife blade parallel with the axis of rubber roll, it is characterized in that: said blade is a urethane fat blade, when removing surface foreign matter on rubber roll, the edge of a knife of blade is the surface that blade is close to the rubber roll of cold-rolling mill.Unit stops or when unnecessary, the edge of a knife of blade leaves the surface of rubber roll, avoids breaks down or reduces wear, and ability is played blade on roll surface when unit is produced.
The device of this removing surface foreign matter on rubber roll is for realizing what said method designed, it comprises knife bar and blade, blade is installed on the knife bar, it is characterized in that: cutter holder is installed on knife bar, and cutter holder has a jaw horizontal and that connect, is convenient to change blade, blade is fastened on the jaw of cutter holder, said blade is a urethane fat blade, the edge of a knife that two edge of a knife faces that blade has angle to be not more than 30 ° form, and the edge of a knife is parallel with the axis of rubber roll; The angle of carrying between the tangent line of contact point of the outer edge of a knife face of rubber roll and rubber roll is 30 °～50 °, and the best is 45 °.Outer edge of a knife face is 15 °～30 ° with angle towards the interior edge of a knife face of rubber roll, and the best is 22 °; The two ends of knife bar are installed on the axle bed of frame, and the distance between knife bar axis and the rubber roll surface is less than the axis of knife bar and the distance between the edge of a knife; End at knife bar connects with the knife bar rotation controling mechanism, and the knife bar rotation controling mechanism is installed in the control box.
The device of this removing surface foreign matter on rubber roll is installed with feeder along insert orientation at knife bar, and feeder can rotate with the rotational synchronization of blade.
The knife bar rotation controling mechanism of the device of this removing surface foreign matter on rubber roll has various ways.Wherein simple with handle, at the fastening handle vertical of an end of knife bar,, make the edge of a knife be close to the rubber roll surface when removing the rubber roll surface with the artificial turning handle of hand with knife bar, make the edge of a knife and rubber roll surface isolation when not removing.
Another kind also is at the fastening handle vertical with knife bar of an end of knife bar, the handle first line of a couplet is a spiral stretching spring then, the other end of spiral stretching spring is connected on the frame, when turning handle makes the edge of a knife press close to rubber roll, handle makes the edge of a knife be close to rubber roll under the pulling force effect of spiral stretching spring, spiral stretching spring is positioned at a side of knife bar, when turning handle makes the edge of a knife break away from rubber roll in the opposite direction, handle makes the edge of a knife leave rubber roll under the pulling force effect of spiral stretching spring, and spiral stretching spring is positioned at the opposite side of knife bar.
Also can be at the fastening crank vertical of an end of knife bar with knife bar, the other end hinge-coupled of crank an end of cylinder, and the other end hinge-coupled of cylinder is on the control box or on the frame.
Said cylinder can be with single-acting cylinder with spiral compression spring or double-acting cylinder.Control the slip of the piston rod of single-acting cylinder with tee ball valve.A gas port of tee ball valve connects with the source of the gas tracheae that workshop is provided with, and the blow vent of single-acting cylinder connects with another gas port of tee ball valve, and the 3rd mouth of tee ball valve is as exhaust outlet.The air inlet of also available two-position three-way valve control cylinder and exhaust, the pressure port of two-position three-way valve connects with the source of the gas tracheae that workshop is provided with, and the blow vent of single-acting cylinder connects with a gas port of two-bit triplet hand-operated valve.When the spool of two-position three-way valve is in a certain position, the air inlet UNICOM of pressure port and single-acting cylinder.When not removing foreign matter, make the spool of two-position three-way valve slide into another extreme position, spool is blocked pressure port, another blow vent UNICOM in valve body of blow vent that connects with single-acting cylinder and single-acting cylinder.The also available two-bit triplet magnetic valve of available two-bit triplet hand-operated valve.With the configuration two-position-five-way solenoid valve, the pressure port of two-position-five-way solenoid valve connects with the source of the gas tracheae that workshop is provided with during with double-acting cylinder.
After being cleared up by blade, falls on the steel plate the lip-deep impurity of rubber roll, cause surface of steel plate large tracts of land defective, therefore, the device of this removing surface foreign matter on rubber roll is along insert orientation, be provided with feeder, and change the angle of feeder along with the change of installation site, so that the foreign matter that scrapes off is collected fully.The general feeder of feeder is installed on the knife bar.
The device of this removing surface foreign matter on rubber roll is taked structure, and at the trial, the water and the oil that are poured on the roll surface can be scraped completely, and can not damage the rubber roll roll surface.Come into operation at cold line, rip cutting unit, reached the purpose of clearing up roll surface impurity foreign matter fully, and effectively improved the qualification rate of thin slab product.
Description of drawings
Fig. 1 is the method schematic diagram of this removing surface foreign matter on rubber roll, and the edge of a knife is positioned on the rubber roll axis.
Fig. 2 is the method schematic diagram of this removing surface foreign matter on rubber roll, and the edge of a knife is positioned under the rubber roll axis.
Fig. 3 is the front view of the device embodiment one of this removing surface foreign matter on rubber roll.
Fig. 4 is and the corresponding partial right side view of Fig. 3.
Fig. 5 is the installation diagram of blade.
Fig. 6 is the installation diagram of action bars at knife bar, duty, and Fig. 1 amplifies relatively.
Fig. 7 is the installation diagram of action bars at knife bar, off working state, and Fig. 1 amplifies relatively
Fig. 8 is the front view of another kind of form of the device embodiment one of this removing surface foreign matter on rubber roll.
Fig. 9 is the front view of the device embodiment two of this removing surface foreign matter on rubber roll.
Figure 10 is the installation diagram of tee ball valve and cylinder.
Figure 11 is the installation diagram of manually-operated gate and cylinder.
Figure 12 is the gas circuit reference diagram of embodiment two.
Figure 13 is the installation diagram of magnetic valve and cylinder.
Figure 14 is another gas circuit reference diagram of embodiment two.
Figure 15 is valve and the cylinder installation diagram of the device embodiment three of this removing surface foreign matter on rubber roll.
Figure 16 is the gas circuit reference diagram of embodiment three.
Among the above-mentioned figure:
1-rubber roll, 2-tangent line, 3-blade 4-outer edge of a knife face 5-blade
6-feeder 7-interior edge of a knife face 8-feeder 9-rubber roller
10-frame, 11-bearing block, 12-knife bar, 13-square tube chuck
14-control box, 15-action bars, 16-vertical slot, 17-cutter holder, 18-jaw
19-extension spring, 20-tee ball valve, 21-handle, 21-handle, 22-crank
23-jointed shaft, 24-piston rod, 25-single-acting cylinder, 26-jointed shaft
27-tracheae, 28-source of the gas tracheae, 29-two-bit triplet hand-operated valve, 30-handle
31-switch, 32-two-bit triplet magnetic valve, 33-piston rod
36-two five-way electromagnetic valves of 34-double-acting cylinder, 35-switch
The specific embodiment
Describe the specific embodiment of the device of this removing surface foreign matter on rubber roll in detail below in conjunction with embodiment and accompanying drawing thereof, but the specific embodiment of the device of this removing surface foreign matter on rubber roll is not limited to following embodiment.
Embodiment one
The method of the removing surface foreign matter on rubber roll that present embodiment is realized referring to Fig. 1, it is to remove the foreign matter on rubber roll 1 surface with the edge of a knife 3 blade 5 parallel with the axis of rubber roll 1, the edge of a knife 3 of present embodiment up and be positioned at vertical direction on the axis of rubber roll 1, said blade 5 is urethane fat blades, when removing the Superficial Foreign Body of rubber roll 1, the edge of a knife 3 of blade 5 is the surface that blade is close to the rubber roll 1 of cold-rolling mill.Unit stops or when unnecessary, the edge of a knife 3 of blade 5 leaves the surface of rubber roll 1, avoids blade 1 to damage or reduces wear.
The device embodiment of this removing foreign matter sees Fig. 3, Fig. 4 and Fig. 5, it comprises knife bar 12 and blade 5, blade 5 is installed on the knife bar 12, it is characterized in that: tighten set cutter holder 17 at knife bar 12, cutter holder 17 has a jaw 18 horizontal and that connect, and blade 5 is fastened on the jaw 18 of cutter holder 17, and said blade 5 is urethane fat blades, the edge of a knife 3 that two edge of a knife faces that blade has angle to be not more than 30 ° form, the edge of a knife 3 is parallel with the axis of rubber roll 1; The angle of carrying between the tangent line 2 of contact point of the outer edge of a knife face 4 of rubber roll and rubber roll 1 is 45 °.The outer edge of a knife face 4 that edge of a knife face is carried rubber roll 1 is 22 ° with angle towards the interior edge of a knife face 7 of rubber roll 1; The two ends of knife bar 12 are installed on the axle bed 11 of frame 10, and the distance between knife bar 12 axis and rubber roll 1 surface is less than the axis of knife bar 12 and the distance between the edge of a knife 3; Right-hand member at knife bar 12 connects with the knife bar rotation controling mechanism.The knife bar rotation controling mechanism is installed in the control box 14
The knife bar operating mechanism of present embodiment is mounted in the action bars 15 vertical with knife bar and the spirality extension spring 19 of knife bar 12, hand is to push-up operation bar 15 when removing foreign matter, the operating side of action bars 15 is being pulled under the effect of extension spring 19 under the knife bar 12, and the edge of a knife 3 contacts with rubber roll 1, sees Fig. 6, when not removing foreign matter, rotate with operating handle bar 15, the operating side of action bars 15 is pulled under the knife bar 12, and knife bar 12 also rotates counterclockwise, the edge of a knife 3 separates with rubber roll 1, sees Fig. 7.Select for use the different extension spring of stiffness factor 19 can regulate the pressure of 3 pairs of rubber rolls 1 of the edge of a knife.
Present embodiment is provided with feeder 6 along the horizontal direction of blade 5, and feeder 6 is bar steel plates parallel with blade 5, and bottom's bending of steel plate is installed on the knife bar 12.
But present embodiment is laid down also workpiece of extension spring 19 usefulness hand rotating operation bars 15, and when just removing foreign matter, hand can not be decontroled action bars 15, hand is firmly upwards pulled action bars 15, with the pressure of the hand control edge of a knife 3, the edge of a knife 3 is separated, with rubber roll 1 referring to Fig. 8 with rubber roll 1.
The gap width 6mm of the jaw 18 of present embodiment, gap depth is 20mm, the material of cutter holder 17 is the 1.5mm corrosion resistant plate, be fixed on the square tube chuck 13 that is enclosed within knife bar 12 with screw, jaw 17 connects along rubber roll face direction both sides, and blade 5 can insert and extract out, be convenient to change, the cross section of blade 5 is trapezoidal, and the width of blade 5 is 55mm, and thickness is 5.5～5.8mm.
Embodiment two
The knife bar operation controlling organization of present embodiment is seen Fig. 9 and Figure 10, and present embodiment is the knife bar rotation controling mechanism with the difference of the device embodiment one that removes foreign matter, and other structure is identical with device embodiment one.The knife bar rotation controling mechanism of present embodiment is the single-acting cylinder 25 of tee ball valve 20 and concrete spring, right-hand member at knife bar 12 is installed with the crank vertical with knife bar 22, the piston rod 24 of the other end of crank 22 and single-acting cylinder 25 is articulated and connected, and single-acting cylinder 25 is articulated and connected at control box 14.A gas port of tee ball valve 20 connects with the source of the gas tracheae 28 that workshop is provided with, and the blow vent of single-acting cylinder 25 connects with another gas port of tee ball valve 20, and the 3rd mouth of tee ball valve 20 is as exhaust outlet.When the spool of tee ball valve 20 is in a certain position, tee ball valve 20 is with the air inlet UNICOM of source of the gas tracheae 28 with single-acting cylinder 25, gas enters single-acting cylinder 25 promotion piston rods 24 and moves up, and piston rod 24 throw cranks 22 drive knife bars 12 rotations makes the edge of a knife 3 ride over the surface of rubber roll 1.When not removing foreign matter, 90 ° of the valve core rotation of tee ball valve 20, spool is blocked institute's source tracheae 28, single-acting cylinder 25 is connected logical with the exhaust outlet of tee ball valve 20, reset under the effect of the spiral compression spring of piston rod 24 in cylinder of single-acting cylinder 25, gas in the cylinder is discharged through the exhaust outlet of tee ball valve 20, and knife bar 12 rotates, the edge of a knife 3 of blade 5 and the surface isolation of rubber roll 1.
Embodiment three
The knife bar operation controlling organization of present embodiment is seen Figure 11, and present embodiment is the knife bar rotation controling mechanism with the difference of the device embodiment one that removes foreign matter, and other structure is identical with device embodiment one.The knife bar rotation controling mechanism of present embodiment is the single-acting cylinder 25 of two-bit triplet hand-operated valve 29 and concrete spring, right-hand member at knife bar 12 is installed with the crank vertical with knife bar 22, the piston rod 24 of the other end of crank 22 and single-acting cylinder 25 is articulated and connected, and single-acting cylinder 25 is articulated and connected at control box 14.Two-bit triplet hand-operated valve 20 pressure port connect with the source of the gas tracheae 28 that workshop is provided with, and the blow vent of single-acting cylinder 25 connects with a gas port of two-bit triplet hand-operated valve 29.When the spool of two-bit triplet hand-operated valve 29 is in a certain position, the air inlet UNICOM of pressure port and single-acting cylinder 25, gas enters single-acting cylinder 25 promotion piston rods 24 and moves up, and piston rod 24 throw cranks 22 drive knife bars 12 rotations makes the edge of a knife 3 ride over the surface of rubber roll 1.When not removing foreign matter, make the spool of two-bit triplet hand-operated valve 20 slide into another extreme position, spool is blocked pressure port, another blow vent UNICOM in valve body of blow vent that connects with single-acting cylinder 25 and single-acting cylinder 25, reset under the effect of the spiral compression spring of piston rod 24 in cylinder of single-acting cylinder 25, gas in the cylinder is discharged through the blow vent of two-bit triplet hand-operated valve 29, and knife bar 12 rotates, the edge of a knife 3 of blade 5 and the surface isolation of rubber roll 1.
The single-acting cylinder commutation loop of present embodiment can be referring to Figure 12.
The valve of present embodiment also can adopt two-position three way magnetic valve 32, with the energising and the outage of switch 31 control two-position three way magnetic valves 32, sees Figure 13.The single-acting cylinder commutation loop of present embodiment can be referring to Figure 14.
Embodiment four
The knife bar operation controlling organization of present embodiment is seen Figure 15, and the front view of present embodiment can be referring to Fig. 9, and present embodiment is the knife bar rotation controling mechanism with the difference of the device embodiment one that removes foreign matter, and other structure is identical with device embodiment one.The knife bar rotation controling mechanism of present embodiment is two five-way electromagnetic valves 36 and double-acting cylinder 34 and switch 35.Right-hand member at knife bar 12 is installed with the crank vertical with knife bar 22, and the piston rod 33 of the other end of crank 22 and double-acting cylinder 34 is articulated and connected, and double-acting cylinder 34 is articulated and connected at control box 14.The pressure port of two-position-five-way solenoid valve 36 connects with the source of the gas tracheae 28 that workshop is provided with.Double-acting cylinder 34 commutation loop of present embodiment can be referring to Figure 16.
Above-mentioned four edges of a knife 3 of removing the blade 5 of foreign matter device embodiment also can be arranged under the axis of rubber roll 1, referring to Fig. 2.
Claims (5)
1, a kind of device of removing surface foreign matter on rubber roll, it comprises knife bar and blade, blade is installed on the knife bar, it is characterized in that: cutter holder is installed on knife bar, cutter holder has a horizontal jaw, and blade is fastened on the jaw of cutter holder, and said blade is a urethane fat blade, the edge of a knife that two edge of a knife faces that blade has angle to be not more than 30 ° form, the edge of a knife is parallel with the axis of rubber roll; The angle of carrying between the tangent line of contact point of the outer edge of a knife face of rubber roll and rubber roll is 30 °～50 °, and outer edge of a knife face is 15 °～30 ° with angle towards the interior edge of a knife face of rubber roll; The two ends of knife bar are installed on the axle bed of frame, and the distance between knife bar axis and the rubber roll surface is less than the axis of knife bar and the distance between the edge of a knife; In frame the knife bar rotation controling mechanism is installed, connects with the knife bar rotation controling mechanism at an end of knife bar.
2, the device of removing surface foreign matter on rubber roll according to claim 1 is characterized in that: the angle of carrying between the tangent line of contact point of the outer edge of a knife face of rubber roll and rubber roll is 45 °, and outer edge of a knife face is 22 ° with angle towards the interior edge of a knife face of rubber roll.
3, the device of removing surface foreign matter on rubber roll according to claim 1 and 2 is characterized in that: at knife bar feeder along insert orientation is installed, feeder can rotate with the rotational synchronization of blade; Jaw connects along rubber roll face direction both sides.
4, the device of removing surface foreign matter on rubber roll according to claim 1 and 2 is characterized in that: said knife bar rotation controling mechanism is at the fastening handle vertical with knife bar of an end of knife bar.
5, the device of removing surface foreign matter on rubber roll according to claim 1 and 2, it is characterized in that: said knife bar rotation controling mechanism is at an end of knife bar fastening crank, cylinder and the valve vertical with knife bar, the piston rod of cylinder and crank hinge-coupled, an end of cylinder are articulated and connected and are connecting with frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100799860A CN101417291A (en) | 2008-11-28 | 2008-11-28 | Surface foreign matter clearing device on rubber roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100799860A CN101417291A (en) | 2008-11-28 | 2008-11-28 | Surface foreign matter clearing device on rubber roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101417291A true CN101417291A (en) | 2009-04-29 |
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ID=40628393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100799860A Pending CN101417291A (en) | 2008-11-28 | 2008-11-28 | Surface foreign matter clearing device on rubber roll |
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| CN (1) | CN101417291A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492740A (en) * | 2014-12-17 | 2015-04-08 | 铜陵精迅特种漆包线有限责任公司 | Cleaning device for supporting roller of enameling machine |
| CN104984938A (en) * | 2015-07-22 | 2015-10-21 | 江苏亚太轻合金科技股份有限公司 | Automatic cleaning device for guide roller of parallel flow aluminum flat tube |
| CN105835921A (en) * | 2016-05-25 | 2016-08-10 | 宋晓玲 | Antifouling food-handling truck |
| CN106655453A (en) * | 2016-11-30 | 2017-05-10 | 中国铁塔股份有限公司长春市分公司 | Base station machine room |
| CN107028215A (en) * | 2017-05-26 | 2017-08-11 | 红塔烟草(集团)有限责任公司 | A kind of cutting tobacco leaves cutting knife cleaning device |
| CN114164637A (en) * | 2021-12-21 | 2022-03-11 | 清远市齐力合成革有限公司 | Fluff suction device convenient to clean |
| 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 |
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2008
- 2008-11-28 CN CNA2008100799860A patent/CN101417291A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492740A (en) * | 2014-12-17 | 2015-04-08 | 铜陵精迅特种漆包线有限责任公司 | Cleaning device for supporting roller of enameling machine |
| CN104984938A (en) * | 2015-07-22 | 2015-10-21 | 江苏亚太轻合金科技股份有限公司 | Automatic cleaning device for guide roller of parallel flow aluminum flat tube |
| CN105835921A (en) * | 2016-05-25 | 2016-08-10 | 宋晓玲 | Antifouling food-handling truck |
| CN106655453A (en) * | 2016-11-30 | 2017-05-10 | 中国铁塔股份有限公司长春市分公司 | Base station machine room |
| CN107028215A (en) * | 2017-05-26 | 2017-08-11 | 红塔烟草(集团)有限责任公司 | A kind of cutting tobacco leaves cutting knife cleaning device |
| CN114164637A (en) * | 2021-12-21 | 2022-03-11 | 清远市齐力合成革有限公司 | Fluff suction device convenient to clean |
| CN114164637B (en) * | 2021-12-21 | 2023-03-14 | 清远市齐力合成革有限公司 | Fluff suction device convenient to clean |
| 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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Open date: 20090429 |