CN220702924U - Oily diaphragm winding and unwinding device with dust removal structure - Google Patents
Oily diaphragm winding and unwinding device with dust removal structure Download PDFInfo
- Publication number
- CN220702924U CN220702924U CN202322286901.9U CN202322286901U CN220702924U CN 220702924 U CN220702924 U CN 220702924U CN 202322286901 U CN202322286901 U CN 202322286901U CN 220702924 U CN220702924 U CN 220702924U
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- dust
- winding
- fixed
- unwinding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000428 dust Substances 0.000 title claims abstract description 100
- 238000004804 winding Methods 0.000 title claims abstract description 56
- 238000003825 pressing Methods 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000004891 communication Methods 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 15
- 230000003749 cleanliness Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 6
- 108010066114 cabin-2 Proteins 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Cleaning In General (AREA)
Abstract
The utility model relates to an oily diaphragm winding and unwinding device with a dust removing structure, which comprises a horizontal plate, wherein a diaphragm cabin is fixed on the upper surface of the horizontal plate, a dust removing mechanism is arranged on the inner top wall of the diaphragm cabin, a winding and unwinding motor is fixedly arranged on the left side of the diaphragm cabin, a rotating rod is fixed on the outer side of an output shaft of the winding and unwinding motor, a winding and unwinding roller is fixed on the outer side of the rotating rod, and a pressing mechanism is arranged between the left side wall and the right side wall of an inner cavity of the diaphragm cabin. This oily diaphragm winding and unwinding device with dust removal structure has set up dust removal mechanism in this oily diaphragm winding and unwinding device with dust removal structure, through setting up location strip, dust cage, dust collection case, filter, first connecting pipe, dust removal fan and second connecting pipe, has realized the collection to the dust, prevents that the dust from adhering to on the diaphragm, has solved on oily diaphragm easy adhesion dust at winding and unwinding in-process, can not eliminate the problem that the cleanliness factor and the product quality of oily diaphragm can be influenced.
Description
Technical Field
The utility model relates to the technical field of oily diaphragm winding and unwinding, in particular to an oily diaphragm winding and unwinding device with a dust removing structure.
Background
When the diaphragm is a layer of film for separating positive and negative poles to prevent energy loss in direct reaction, in the structure of the lithium battery, the diaphragm is one of key inner layer components, the performance of the diaphragm determines the interface structure and the like of the battery, the characteristics of capacity, circulation, safety performance and the like of the battery are directly influenced, the diaphragm with excellent performance plays an important role in improving the comprehensive performance of the battery, and a special winding and unwinding device is needed to realize winding and unwinding of the oily diaphragm in the production process of the oily diaphragm.
In chinese patent, a film material receive and releases a roll structure is disclosed, including unable adjustment base, unable adjustment base's upper end one side is provided with the subassembly of unreeling, unable adjustment base's upper end is located the side of unreeling the subassembly and is provided with the rolling subassembly, unreel the upper end surface of subassembly and be provided with the station locating hole, the upper end of station locating hole is provided with the location plunger, goes through the film roller and puts the membrane, draws the film roller to carry out the rolling of film material, and waste film does not need the rolling, and the color mark sensor is used for sealing the location of membrane, through being provided with the roller at the surface of crossing the roller and adjusting solid fixed ring, the surface of deflector roller is provided with deflector roll regulation solid fixed ring, conveniently carries out spacingly, carries out manual correction according to sealing the skew of membrane, is provided with unreel subassembly mobile mechanism and rolling subassembly mobile mechanism respectively in the lower extreme of unreel subassembly and rolling subassembly, makes the rolling subassembly carry out the displacement, makes things convenient for different station operation demands.
The utility model provides a convenient spacing that carries on of above-mentioned patent, the while is convenient carries on different station operation demands, but in receive and release the in-process, be difficult to adhere to the dust on the oily diaphragm, can not eliminate the dust, can influence the cleanliness factor and the product quality of oily diaphragm, for this reason proposes an oily diaphragm receive and release device with dust removal structure and solves above-mentioned problem.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides an oily diaphragm winding and unwinding device with a dust removing structure, which has the advantage of preventing dust from adhering, and solves the problems that the cleanliness and the product quality of the oily diaphragm are affected when dust is easy to adhere to the oily diaphragm and cannot be eliminated in the winding and unwinding process.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the oily diaphragm winding and unwinding device with the dust removing structure comprises a horizontal plate, wherein a diaphragm cabin is fixed on the upper surface of the horizontal plate, a dust removing mechanism is arranged on the inner top wall of the diaphragm cabin, a winding and unwinding motor is fixedly arranged on the left side of the diaphragm cabin, a rotating rod is fixed on the outer side of an output shaft of the winding and unwinding motor, a winding and unwinding roller is fixed on the outer side of the rotating rod, and a pressing mechanism is arranged between the left side wall and the right side wall of an inner cavity of the diaphragm cabin;
the dust removing mechanism comprises two positioning strips fixed on the inner top wall of the diaphragm bin, a dust collecting cover is fixed on the lower surface of the positioning strips, a dust collecting box is fixed on the upper surface of the diaphragm bin, a filter plate is fixedly installed between the left side wall and the right side wall of the inner cavity of the dust collecting box, the upper surface of the dust collecting box is communicated with a first connecting pipe, the other end of the first connecting pipe penetrates through and extends to the inner part of the diaphragm bin, a dust removing fan is fixed on the upper surface of the diaphragm bin, and the air inlet end of the dust removing fan is communicated with a second connecting pipe.
Further, one end of the first connecting pipe far away from the dust collection box is communicated with the upper surface of the dust collection cover, and one end of the second connecting pipe far away from the dust collection fan is communicated with the right side of the dust collection box.
Further, the dust hood is located above the winding and unwinding roller, and the diaphragm bin is in a cuboid shape with hollow inside and missing front and lower surfaces.
Further, the pressing mechanism comprises a movable rod arranged between the left side wall and the right side wall of the inner cavity of the diaphragm cabin, the outer side of the movable rod is rotationally connected with a pressing roller through a bearing, the left side and the right side of the diaphragm cabin are respectively provided with a communication port, the inner top wall of the communication port is fixedly provided with a connecting spring, and the left side and the right side of the movable rod are respectively fixedly provided with a movable block.
Further, one end of the connecting spring, which is far away from the inner top wall of the communication port, is fixed with the upper surface of the movable block, and the pressing roller is cylindrical.
Further, the inside of intercommunication mouth is fixed with two slide rails, both sides all are fixed with the stopper around the movable block, stopper sliding connection is in the inside of slide rail.
Further, the length of the pressing roller is smaller than that of the collecting and releasing roller, and the pressing roller is located above the collecting and releasing roller.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
1. this oily diaphragm winding and unwinding device with dust removal structure has set up dust removal mechanism in this oily diaphragm winding and unwinding device with dust removal structure, through the mutually supporting between each structure in the dust removal mechanism, through setting up locating strip, dust cage, dust collection box, filter, first connecting pipe, dust removal fan and second connecting pipe, realized the collection to the dust, prevent that the dust from adhering to on the diaphragm, solved on the oily diaphragm easy adhesion dust in winding and unwinding process, can not eliminate the problem that the cleanliness factor and the product quality of oily diaphragm can be influenced.
2. This oily diaphragm winding and unwinding device with dust removal structure has set up pressing mechanism in this oily diaphragm winding and unwinding device with dust removal structure, through the mutually supporting between each structure in the pressing mechanism, through setting up movable rod, press roller, intercommunication mouth, coupling spring and movable rod, realizes the pressing of the diaphragm on the winding and unwinding roller, prevents that the diaphragm from appearing loose condition in winding and unwinding process.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a side view of the diaphragm cartridge structure of the present utility model;
FIG. 3 is a schematic view of a dust removing mechanism according to the present utility model;
FIG. 4 is a schematic view of a pressing mechanism according to the present utility model;
fig. 5 is a side view of the communication port structure of the present utility model.
In the figure: 1 horizontal plate, 2 diaphragm bin, 3 dust removing mechanism, 301 locating strip, 302 dust collecting cover, 303 dust collecting box, 304 filter, 305 first connecting pipe, 306 dust removing fan, 307 second connecting pipe, 4 winding and unwinding motor, 5 bull stick, 6 winding and unwinding roller, 7 pressing mechanism, 701 movable rod, 702 pressing roller, 703 communication port, 704 connecting spring, 705 movable block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, an oily diaphragm winding and unwinding device with a dust removing structure in this embodiment includes a horizontal plate 1, a diaphragm cabin 2 is fixed on the upper surface of the horizontal plate 1, a dust removing mechanism 3 is arranged on the inner top wall of the diaphragm cabin 2, a winding and unwinding motor 4 is fixedly mounted on the left side of the diaphragm cabin 2, a rotating rod 5 is fixed on the outer side of an output shaft of the winding and unwinding motor 4, a winding and unwinding roller 6 is fixed on the outer side of the rotating rod 5, and a pressing mechanism 7 is arranged between the left side wall and the right side wall of an inner cavity of the diaphragm cabin 2.
The dust hood 302 is located above the collecting and releasing roller 6, and the diaphragm house 2 is in the shape of a rectangular parallelepiped with a hollow interior and both the front and lower surfaces missing.
It should be noted that, the components of the present application are all general standard components or components known to those skilled in the art, and the structures and principles thereof are all known to those skilled in the art through technical manuals or through routine experimental methods.
Referring to fig. 3, in order to prevent dust from adhering to the diaphragm, the dust removing mechanism 3 in this embodiment includes two positioning strips 301 fixed on the inner top wall of the diaphragm chamber 2, a dust collecting cover 302 is fixed on the lower surface of the positioning strips 301, a dust collecting box 303 is fixed on the upper surface of the diaphragm chamber 2, a filter plate 304 is fixedly installed between the left and right side walls of the inner cavity of the dust collecting box 303, a first connecting pipe 305 with the other end penetrating and extending into the diaphragm chamber 2 is communicated with the upper surface of the dust collecting box 303, a dust removing fan 306 is fixed on the upper surface of the diaphragm chamber 2, a second connecting pipe 307 is communicated with the air inlet end of the dust removing fan 306, the aperture of the filter plate 304 is smaller, and dust entering the dust collecting box 303 cannot pass through the filter plate 304, thereby completing dust collection.
One end of the first connection pipe 305, which is far from the dust box 303, is communicated with the upper surface of the dust collection housing 302, and one end of the second connection pipe 307, which is far from the dust removal fan 306, is communicated with the right side of the dust box 303.
Referring to fig. 4-5, in order to prevent the loosening of the diaphragm during the retraction process, the pressing mechanism 7 in this embodiment includes a movable rod 701 disposed between the left and right side walls of the inner cavity of the diaphragm chamber 2, the outer side of the movable rod 701 is rotatably connected with a pressing roller 702 through a bearing, the left and right sides of the diaphragm chamber 2 are provided with communication ports 703, the inner top wall of the communication ports 703 is fixed with a connecting spring 704, the left and right sides of the movable rod 701 are fixed with movable blocks 705, when the thickness of the diaphragm outside the retraction roller 6 increases, the movable rod 701 and the pressing roller 702 move upward, and when the thickness of the diaphragm outside the retraction roller 6 decreases, the movable rod 701 and the pressing roller 702 move downward.
One end of the connecting spring 704, which is far away from the inner top wall of the communication port 703, is fixed to the upper surface of the movable block 705, and the pressing roller 702 is cylindrical in shape.
Two slide rails are fixed in the communication port 703, limiting blocks are fixed on the front side and the rear side of the movable block 705, the limiting blocks are slidably connected in the slide rails, and when the movable block 705 moves, the limiting blocks are driven to slide in the slide rails, so that the stability of the movable block 705 during movement is improved.
The length of the pressing roller 702 is smaller than that of the winding roller 6, and the pressing roller 702 is located above the winding roller 6.
Standard parts used in the method can be purchased from the market, special-shaped parts can be customized according to description of specifications and drawings, specific connection modes of the parts are conventional means such as mature bolts, rivets and welding in the prior art, machines, parts and equipment are conventional in the prior art, and circuit connection is conventional in the prior art, so that the special-shaped parts are not described in detail.
If the application discloses or relates to components or structures that are fixedly connected to each other, then unless otherwise stated, the fixedly connected structure is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
The working principle of the embodiment is as follows:
(1) When the diaphragm needs to be wound and unwound, the winding and unwinding motor 4 is started at this moment, the output shaft of the winding and unwinding motor 4 starts to rotate, the rotating rod 5 is driven to start rotating, the winding and unwinding roller 6 is driven to start rotating by the rotating rod 5, winding and unwinding of the diaphragm are achieved along with the rotation of the winding and unwinding roller 6, the dust removing fan 306 is started at this moment in the winding and unwinding process of the diaphragm, the suction force of the dust removing fan 306 is received, dust in the diaphragm cabin 2 and on the diaphragm is sucked by the dust collecting cover 302, and the dust entering the dust collecting cover 302 enters the dust collecting box 303 through the first connecting pipe 305.
(2) Under the action of the filter plate 304 inside the dust collection box 303, dust entering the dust collection box 303 cannot pass through the filter plate 304 due to the small aperture of the filter plate 304, dust is prevented from being attached to the diaphragm, the thickness of the diaphragm outside the winding and unwinding roller 6 is increased along with the winding and unwinding roller 6, the pressing roller 702 is driven to move upwards, the moving of the pressing roller 702 drives the movable rod 701 to move upwards, the moving of the movable rod 701 drives the movable block 705 to move upwards, the connecting spring 704 is compressed along with the moving of the movable block 705, the diaphragm is wound on the winding and unwinding roller 6 under the pressing of the pressing roller 702 at the moment, the phenomenon that the diaphragm is loose is prevented, and the diaphragm is wound on the winding and unwinding roller 6 in order.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. Oily diaphragm winding and unwinding device with dust removal structure, including horizontal plate (1), its characterized in that: the device is characterized in that a diaphragm bin (2) is fixed on the upper surface of the horizontal plate (1), a dust removing mechanism (3) is arranged on the inner top wall of the diaphragm bin (2), a winding and unwinding motor (4) is fixedly arranged on the left side of the diaphragm bin (2), a rotating rod (5) is fixed on the outer side of an output shaft of the winding and unwinding motor (4), a winding and unwinding roller (6) is fixed on the outer side of the rotating rod (5), and a pressing mechanism (7) is arranged between the left side wall and the right side wall of an inner cavity of the diaphragm bin (2);
the dust removing mechanism (3) comprises two positioning strips (301) fixed on the inner top wall of the diaphragm bin (2), a dust collecting cover (302) is fixed on the lower surface of the positioning strips (301), a dust collecting box (303) is fixed on the upper surface of the diaphragm bin (2), a filter plate (304) is fixedly installed between the left side wall and the right side wall of the inner cavity of the dust collecting box (303), a first connecting pipe (305) penetrating through and extending to the inner portion of the diaphragm bin (2) is communicated with the upper surface of the dust collecting box (303), a dust removing fan (306) is fixed on the upper surface of the diaphragm bin (2), and a second connecting pipe (307) is communicated with the air inlet end of the dust removing fan (306).
2. The oily membrane winding and unwinding device with a dust removal structure according to claim 1, characterized in that: one end of the first connecting pipe (305) far away from the dust collection box (303) is communicated with the upper surface of the dust collection cover (302), and one end of the second connecting pipe (307) far away from the dust collection fan (306) is communicated with the right side of the dust collection box (303).
3. The oily membrane winding and unwinding device with a dust removal structure according to claim 1, characterized in that: the dust hood (302) is positioned above the winding and unwinding roller (6), and the diaphragm bin (2) is in a cuboid shape with hollow inside and missing front and lower surfaces.
4. The oily membrane winding and unwinding device with a dust removal structure according to claim 1, characterized in that: the pressing mechanism (7) comprises a movable rod (701) arranged between the left side wall and the right side wall of the inner cavity of the diaphragm cabin (2), the outer side of the movable rod (701) is rotationally connected with a pressing roller (702) through a bearing, the left side and the right side of the diaphragm cabin (2) are respectively provided with a communication port (703), the inner top wall of the communication port (703) is fixedly provided with a connecting spring (704), and the left side and the right side of the movable rod (701) are respectively fixedly provided with a movable block (705).
5. The oily membrane winding and unwinding device with a dust removal structure according to claim 4, wherein: one end of the connecting spring (704) far away from the inner top wall of the communication port (703) is fixed with the upper surface of the movable block (705), and the shape of the pressing roller (702) is a cylinder.
6. The oily membrane winding and unwinding device with a dust removal structure according to claim 4, wherein: two sliding rails are fixed in the communication port (703), limiting blocks are fixed on the front side and the rear side of the movable block (705), and the limiting blocks are slidably connected in the sliding rails.
7. The oily membrane winding and unwinding device with a dust removal structure according to claim 4, wherein: the length of the pressing roller (702) is smaller than that of the collecting and releasing roller (6), and the pressing roller (702) is located above the collecting and releasing roller (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322286901.9U CN220702924U (en) | 2023-08-24 | 2023-08-24 | Oily diaphragm winding and unwinding device with dust removal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322286901.9U CN220702924U (en) | 2023-08-24 | 2023-08-24 | Oily diaphragm winding and unwinding device with dust removal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220702924U true CN220702924U (en) | 2024-04-02 |
Family
ID=90436016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322286901.9U Active CN220702924U (en) | 2023-08-24 | 2023-08-24 | Oily diaphragm winding and unwinding device with dust removal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220702924U (en) |
-
2023
- 2023-08-24 CN CN202322286901.9U patent/CN220702924U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109399316B (en) | Diaphragm dividing and cutting machine | |
| CN220702924U (en) | Oily diaphragm winding and unwinding device with dust removal structure | |
| CN111268482A (en) | Automatic pole piece splicing method and device of sheet-making winding machine | |
| CN213264833U (en) | Coiling mechanism is used in non-woven fabrics processing | |
| CN117139292B (en) | Cleaning device and method in battery diaphragm winding process | |
| CN211304370U (en) | High-precision punch press with waste recycling function | |
| CN115123856B (en) | Rim charge recovery plant for film slitting | |
| CN115740114B (en) | Bending machine convenient for moving die and using method | |
| CN209411461U (en) | Diaphragm cutting machine | |
| CN115946164A (en) | Spool paper processing cutting equipment | |
| CN211998022U (en) | Automatic pole piece splicing device of sheet-making winding machine | |
| CN215282220U (en) | Printer is from type membrane cutting device | |
| CN213142603U (en) | Cutting device is put to polymer fabric book | |
| CN213034166U (en) | Iron casting cutting machine capable of preventing dust pollution | |
| CN111071833B (en) | Automatic sleeve type winding machine for producing hot melt adhesive film | |
| CN211464008U (en) | Automatic cleaning device for roller press scraper | |
| CN110676439A (en) | Paper covering machine for lead-acid storage battery | |
| CN217414249U (en) | Cross cutting machine with coil stock device | |
| CN210064664U (en) | Production equipment of environment-friendly non-toxic adhesive sticker for daily necessities | |
| CN217257796U (en) | Protection film production casting machine with deashing structure | |
| CN111573390B (en) | Film taking method for printer installation | |
| CN218170641U (en) | Split type production facility of plastic bag | |
| CN214827744U (en) | Scrap edge recovery device of film blowing machine | |
| CN117772532B (en) | Permeation-prevention coating device applied to microporous breathable material coating system | |
| CN215998900U (en) | Pipe cutting machine convenient to operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |