CN112722957A - Relaxation degree control device for melt-blown fabric production and use method thereof - Google Patents
Relaxation degree control device for melt-blown fabric production and use method thereof Download PDFInfo
- Publication number
- CN112722957A CN112722957A CN202011494308.8A CN202011494308A CN112722957A CN 112722957 A CN112722957 A CN 112722957A CN 202011494308 A CN202011494308 A CN 202011494308A CN 112722957 A CN112722957 A CN 112722957A
- Authority
- CN
- China
- Prior art keywords
- melt
- fixedly connected
- blown fabric
- sliding
- screw rod
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
Landscapes
- Treatment Of Fiber Materials (AREA)
Abstract
The invention relates to the technical field of melt-blown fabric production, in particular to a relaxation degree control device for melt-blown fabric production and a use method thereof, which comprises a fixed frame, wherein a relaxation degree adjusting mechanism is arranged between the fixed frames positioned at the left side and the right side, the relaxation degree adjusting mechanism comprises a tensioning roller, a tensioning roller fixing block elastic spring, a sliding plate, a connecting strip, a sliding block, a first screw rod and a first motor, the inner side of the fixing frame is connected with tensioning roller fixing blocks in a sliding way, the tensioning roller fixing blocks positioned at the left side and the right side are connected with tensioning rollers in a rotating way, the bottom end of the tension roller fixing block is fixedly connected with an elastic spring, and the bottom end of the elastic spring is fixedly connected with a sliding plate, under the elasticity of the elastic spring, the melt-blown fabric can be driven by the tensioning roller to be partially folded, so that the relaxation degree of the melt-blown fabric is ensured.
Description
Technical Field
The invention relates to the technical field of melt-blown fabric production, in particular to a relaxation degree control device for melt-blown fabric production and a using method thereof.
Background
The melt-blown cloth is the most core material of the mask, the melt-blown cloth mainly takes polypropylene as a main raw material, the fiber diameter can reach 1-5 microns, the gaps are large, the structure is fluffy, the anti-wrinkle capacity is good, and the number and the surface area of fibers in unit area are increased by the superfine fibers with unique capillary structures, so that the melt-blown cloth has good filtering property, shielding property, heat insulation property and oil absorption property, and can be used in the fields of air, liquid filtering materials, isolating materials, absorbing materials, mask materials, warm-keeping materials, oil absorbing materials, wiping cloth and the like.
And need carry out operations such as rolling with the melt-blown fabric in the melt-blown fabric production process, nevertheless always at the rolling process, the rolling speed of melt-blown fabric can't guarantee with blowing plastics and think agreeing to, leads to the melt-blown fabric can't obtain controlling at the rolling process total looseness to influence rolling efficiency, and melt-blown fabric still can appear the phenomenon of rewinding under the exogenic action at the rolling in-process, lead to the melt-blown fabric not only unable rolling still can be followed the coiling mechanism and emitted, influence rolling quality.
Disclosure of Invention
The invention aims to provide a relaxation degree control device for melt-blown fabric production and a using method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a relaxation degree control device for melt-blown fabric production and a use method thereof comprise a fixed frame, wherein the fixed frame is arranged in bilateral symmetry, a relaxation degree adjusting mechanism and an anti-rewinding mechanism are arranged between the fixed frames positioned on the left side and the right side, the relaxation degree adjusting mechanism comprises a tension roller, a tension roller fixed block elastic spring, a sliding plate, a connecting strip, a sliding block, a first screw rod and a first motor, the inner side of the fixed frame is connected with the tension roller fixed block in a sliding way, the tension roller is rotatably connected between the tension roller fixed blocks positioned on the left side and the right side, the bottom end of the tension roller fixed block is fixedly connected with the elastic spring, the bottom end of the elastic spring is fixedly connected with the sliding plate, the sliding plate is connected to the inner side of the fixed frame in a sliding way, the front end and the rear end of the sliding plate are fixedly connected, the anti-rewinding mechanism comprises a first motor, a second screw, a sliding seat, a clamping roller, a transmission gear, a ratchet wheel, a reset spring and a pawl, wherein the clamping roller is arranged between the fixing frames on the left side and the right side.
Preferably, the inner side of the fixing frame is fixedly connected with a first motor, the tail end of a main shaft of the first motor is fixedly connected with a first screw rod, the first screw rod is rotatably connected to the inner side of the fixing frame, and the first screw rod is in threaded screwing connection with the sliding block.
Preferably, the inner side of the fixing frame is slidably connected with a sliding seat, the inner side of the fixing frame is fixedly connected with a first motor, the tail end of a main shaft of the first motor is fixedly connected with a second screw rod, and the second screw rod is connected to the inner side of the sliding seat in a threaded manner.
Preferably, the number of the transmission gears is two, the left end and the right end of the clamping roller are fixedly connected with the transmission gears, the transmission gears positioned on the upper side and the lower side are meshed with each other, and one end of the transmission gear positioned above the clamping roller is fixedly connected with a ratchet wheel.
Preferably, the inner side of the sliding seat is connected with a pawl in a sliding manner, the pawl is arranged below the ratchet wheel, the bottom end of the pawl is fixedly connected with a return spring, and the return spring is fixedly connected to the inner side of the sliding seat.
Preferably, the method comprises the following steps:
the method comprises the following steps: firstly, the melt-blown fabric to be tensioned penetrates through the inner side of the anti-rewinding mechanism and surrounds the outer side of the relaxation degree adjusting mechanism, so that the melt-blown fabric can slide on the inner side of the anti-rewinding mechanism and the outer side of the relaxation degree adjusting mechanism;
step two: in the process of sliding of the melt-blown fabric, the relaxation adjusting mechanism can drive the melt-blown fabric to keep the melt-blown fabric in a tight state all the time, so that the relaxation is controlled;
step three: when the melt-blown fabric is laid upside down, the melt-blown fabric is clamped through the anti-rewinding mechanism, so that the melt-blown fabric can move only in a single direction, and the rewinding of the melt-blown fabric is avoided.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the arranged relaxation degree adjusting mechanism, the meltblown fabric can be driven by the tensioning roller under the elastic force of the elastic spring, the meltblown fabric is partially folded, the relaxation degree of the meltblown fabric is ensured, the phenomenon that the winding effect is influenced by the loose meltblown fabric is avoided, the first motor drives the first screw rod to rotate, the sliding block is driven to move up and down, the sliding block drives the sliding plate to move through the connecting belt, the elastic spring is compressed after the sliding plate moves, the tensioning force when the tensioning roller fixing block drives the tensioning roller to tension the meltblown fabric is adjusted, and the relaxation degree is conveniently controlled;
2. according to the invention, the ratchet wheel is limited by the pawl under the elastic force of the return spring through the anti-rewinding mechanism, so that the clamping roller positioned above can only rotate in a single direction, and when the meltblown fabric moves in a reverse direction under the action of external force, the clamping rollers on the upper side and the lower side cannot rotate in a reverse direction under the meshing of the transmission gear, so that the meltblown fabric is clamped, and the phenomenon of secondary winding caused by the fact that the meltblown fabric is pulled out by the external force is avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the fixing frame of the present invention;
FIG. 3 is a schematic view of the mounting structure of the relaxation regulating mechanism of the present invention;
FIG. 4 is a schematic view of the mounting structure of the sliding seat according to the present invention;
FIG. 5 is a schematic view of the structure at A of FIG. 4 according to the present invention.
In the figure: 1-fixed frame, 2-relaxation degree adjusting mechanism, 201-tensioning roller, 202-tensioning roller fixed block, 203-elastic spring, 204-sliding plate, 205-connecting bar, 206-sliding block, 207-first screw rod, 208-first motor, 3-anti-rewinding mechanism, 301-first motor, 302-second screw rod, 303-sliding seat, 304-clamping roller, 305-transmission gear, 306-ratchet wheel, 307-reset spring and 308-pawl.
Detailed Description
Referring to fig. 1-5, the present invention provides a technical solution:
a relaxation degree control device for melt-blown fabric production and a use method thereof comprise a fixed frame 1, wherein the fixed frame 1 is arranged in bilateral symmetry, a relaxation degree adjusting mechanism 2 and an anti-rewinding mechanism 3 are arranged between the fixed frames 1 at the left side and the right side, the relaxation degree adjusting mechanism 2 comprises a tension roller 201, a tension roller fixed block 202 elastic spring 203, a sliding plate 204, a connecting strip 205, a sliding block 206, a first screw 207 and a first motor 208, the inner side of the fixed frame 1 is connected with the tension roller fixed block 202 in a sliding way, the tension roller 201 is connected between the tension roller fixed blocks 202 at the left side and the right side in a rotating way, the bottom end of the tension roller fixed block 202 is fixedly connected with the elastic spring 203, the arrangement enables the tension roller fixed block 202 to have the upward movement tendency through the elasticity of the elastic spring 203, the sliding plate 204 is fixedly connected with the bottom end of the elastic spring 203, the arrangement can drive the elastic spring, the sliding plate 204 is slidably connected to the inner side of the fixed frame 1, the front end and the rear end of the sliding plate 204 are fixedly connected with a connecting bar 205, the other end of the connecting bar 205 is fixedly connected with a sliding block 206, a first screw rod 207 penetrates through the inner side of the sliding block 206, the anti-rewinding mechanism 3 comprises a first motor 301, a second screw rod 302, a sliding seat 303, a clamping roller 304, a transmission gear 305, a ratchet 306, a return spring 307 and a pawl 308, and the clamping roller 304 is arranged between the fixed frames 1 on the left side and the right side.
The inner side of the fixed frame 1 is fixedly connected with a first motor 208, the tail end of a main shaft of the first motor 208 is fixedly connected with a first screw rod 207, the first screw rod 207 is rotatably connected to the inner side of the fixed frame 1, the first screw rod 207 is in threaded screwing connection with the sliding block 206, the first screw rod 207 is driven to rotate through the first motor 208, and after the first screw rod 207 rotates, the sliding block 206 is driven to move up and down through the threaded screwing connection with the sliding block 206; the inner side of the fixed frame 1 is slidably connected with a sliding seat 303, the inner side of the fixed frame 1 is fixedly connected with a first motor 301, the tail end of a main shaft of the first motor 301 is fixedly connected with a second screw 302, the second screw 302 is connected to the inner side of the sliding seat 303 in a threaded screwing manner, the first motor 301 drives the second screw 302 to rotate, the second screw 302 can be connected with the sliding seat 303 in a threaded screwing manner after rotating, the sliding seat 303 is driven to slide, and the clamping roller 304 is convenient to clamp the melt-blown cloth at different positions; the number of the transmission gears 305 is two, the left end and the right end of the clamping roller 304 are both fixedly connected with the transmission gears 305, the transmission gears 305 positioned on the upper side and the lower side are mutually meshed, one end of the transmission gear 305 positioned above is fixedly connected with a ratchet 306, and the arrangement enables the clamping roller 304 to synchronously and reversely rotate through the mutual meshing of the transmission gears 305; the inner side of the sliding seat 303 is slidably connected with a pawl 308, the pawl 308 is arranged below the ratchet 306, the bottom end of the pawl 308 is fixedly connected with a return spring 307, the return spring 307 is fixedly connected with the inner side of the sliding seat 303, and the pawl 308 limits the ratchet 306 through the elastic force of the return spring 307.
The working process is as follows: before the device is used, the external power supply is used for supplying power, firstly, the melt-blown fabric is arranged between the clamping rollers 304 on the upper side and the lower side in a penetrating manner, the clamping rollers 304 are used for clamping the melt-blown fabric, then, the melt-blown fabric is wound on the outer side of the tension roller 201, finally, the melt-blown fabric is arranged on the inner side of the winding device, when the melt-blown fabric is wound, under the elastic force of the elastic spring 203, the tension roller fixing block 202 drives the tension roller 201 to have a trend of moving upwards all the time, so that the melt-blown fabric can be driven by the tension roller 201 to partially fold the melt-blown fabric, the relaxation degree of the melt-blown fabric is ensured, the winding effect caused by the loosening of the melt-blown fabric is avoided, the first motor 208 drives the first screw rod 207 to rotate through the operation of the first motor 208, the first screw rod 207 is screwed with the thread of the sliding block 206 after rotating, the sliding block 206 can drive the sliding block 204 to move up and down through the connecting, the sliding plate 204 compresses the elastic spring 203 after moving, so that the elastic force borne by the tensioning roller fixing block 202 at the same position is changed, the tensioning force generated when the tensioning roller fixing block 202 drives the tensioning roller 201 to tension the meltblown fabric is adjusted, the relaxation degree is convenient to control, in the process of winding the meltblown fabric, the first motor 301 drives the second screw 302 to rotate, the second screw 302 can be screwed and connected with the thread of the sliding seat 303 after rotating, the sliding seat 303 is driven to slide, the clamping roller 304 is convenient to clamp the meltblown fabric at different positions, the pawl 308 limits the ratchet 306 under the elastic force of the return spring 307, so that the clamping roller 304 above can only rotate in a single direction, when the meltblown fabric moves in a reverse direction under the action of external force, the clamping rollers 304 at the upper side and the lower side cannot rotate in a reverse direction under the meshing of the transmission gear 305, thereby realize the centre gripping to the melt-blown fabric, avoid external force to tear out the phenomenon that leads to the secondary rolling with the melt-blown fabric.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (6)
1. The utility model provides a melt-blown fabric production is with relaxation degree controlling means, includes mount (1), its characterized in that: the fixing frame (1) is arranged in a bilateral symmetry manner, a tension degree adjusting mechanism (2) and a rewinding preventing mechanism (3) are arranged between the fixing frames (1) positioned on the left side and the right side, the tension degree adjusting mechanism (2) comprises a tension roller (201), tension roller fixing blocks (202), elastic springs (203), a sliding plate (204), a connecting strip (205), a sliding block (206), a first screw rod (207) and a first motor (208), the inner side of the fixing frame (1) is connected with the tension roller fixing blocks (202) in a sliding manner, the tension roller (201) is rotatably connected between the tension roller fixing blocks (202) positioned on the left side and the right side, the elastic springs (203) are fixedly connected with the bottom ends of the tension roller fixing blocks (202), the sliding plate (204) is connected with the sliding plate (204) in a sliding manner, the sliding plate (204) is connected with the inner side of the, the anti-rewinding mechanism comprises a sliding plate (204), wherein the front end and the rear end of the sliding plate are fixedly connected with connecting strips (205), the other end of each connecting strip (205) is fixedly connected with a sliding block (206), a first screw (207) penetrates through the inner side of each sliding block (206), the anti-rewinding mechanism (3) comprises a first motor (301), a second screw (302), a sliding seat (303), a clamping roller (304), a transmission gear (305), a ratchet wheel (306), a return spring (307) and a pawl (308), and the clamping roller (304) is arranged between fixing frames (1) on the left side and the right side.
2. A sag control apparatus for meltblown fabric production according to claim 1, wherein: the inboard fixedly connected with first motor (208) of mount (1), first screw rod (207) of the terminal fixedly connected with of main shaft of first motor (208), first screw rod (207) rotate to be connected in the inboard of mount (1), first screw rod (207) and sliding block (206) screw thread are closed soon and are connected.
3. A sag control apparatus for meltblown fabric production according to claim 1, wherein: the inboard sliding connection of mount (1) has sliding seat (303), the inboard fixedly connected with first motor (301) of mount (1), the terminal fixedly connected with second screw rod (302) of main shaft of first motor (301), second screw rod (302) screw thread closes soon and connects in the inboard of sliding seat (303).
4. A sag control apparatus for meltblown fabric production according to claim 1, wherein: the number of the transmission gears (305) is two, the left end and the right end of the clamping roller (304) are fixedly connected with the transmission gears (305), the transmission gears (305) positioned on the upper side and the lower side are meshed with each other, and one end of the transmission gear (305) positioned above is fixedly connected with a ratchet wheel (306).
5. A sag control apparatus for meltblown fabric production according to claim 1, wherein: the inner side of the sliding seat (303) is connected with a pawl (308) in a sliding mode, the pawl (308) is arranged below the ratchet wheel (306), the bottom end of the pawl (308) is fixedly connected with a return spring (307), and the return spring (307) is fixedly connected to the inner side of the sliding seat (303).
6. The use method of a sag control device for meltblown fabric production according to claim 1, comprising the steps of:
the method comprises the following steps: firstly, the melt-blown fabric to be tensioned penetrates through the inner side of the anti-rewinding mechanism (3) and surrounds the outer side of the relaxation degree adjusting mechanism (2), so that the melt-blown fabric can slide on the inner side of the anti-rewinding mechanism (3) and the outer side of the relaxation degree adjusting mechanism (2);
step two: in the process of sliding of the melt-blown fabric, the relaxation adjusting mechanism (2) can drive the melt-blown fabric to keep the melt-blown fabric in a tight state all the time, so that the relaxation is controlled;
step three: when the melt-blown fabric is put upside down, the melt-blown fabric is clamped by the anti-rewinding mechanism (3), so that the melt-blown fabric can move only in a single direction, and the rewinding of the melt-blown fabric is avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494308.8A CN112722957A (en) | 2020-12-17 | 2020-12-17 | Relaxation degree control device for melt-blown fabric production and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494308.8A CN112722957A (en) | 2020-12-17 | 2020-12-17 | Relaxation degree control device for melt-blown fabric production and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112722957A true CN112722957A (en) | 2021-04-30 |
Family
ID=75603873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011494308.8A Pending CN112722957A (en) | 2020-12-17 | 2020-12-17 | Relaxation degree control device for melt-blown fabric production and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112722957A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790646A (en) * | 2022-05-10 | 2022-07-26 | 宁国金诺制衣有限公司 | Automatic cloth cutting device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB778228A (en) * | 1954-08-16 | 1957-07-03 | Ericsson Brothers Ltd | Improvements in or relating to paper feed drives |
| CN203638818U (en) * | 2013-11-01 | 2014-06-11 | 涂明招 | Eccentric speed-governing cloth rolling machine |
| CN104291141A (en) * | 2014-10-10 | 2015-01-21 | 长兴劲屹纺织机械有限公司 | Cloth rolling device |
| CN106120117A (en) * | 2016-09-21 | 2016-11-16 | 重庆群禾纺织有限公司 | A kind of rolling-up device of loom |
| CN110329933A (en) * | 2019-07-19 | 2019-10-15 | 河北昇华卷扬机制造有限公司 | A kind of hoist engine and its hoist engine control method |
| CN211393218U (en) * | 2019-12-31 | 2020-09-01 | 盐城市兴宏布业有限公司 | Asbestos cloth rolling machine |
| CN211545350U (en) * | 2020-01-04 | 2020-09-22 | 嘉兴市旭海纺织有限公司 | Cloth winding device |
| CN111910418A (en) * | 2020-06-10 | 2020-11-10 | 桐乡市中瑞环保科技有限公司 | Adjustable cutting equipment for melt-blown fabric |
-
2020
- 2020-12-17 CN CN202011494308.8A patent/CN112722957A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB778228A (en) * | 1954-08-16 | 1957-07-03 | Ericsson Brothers Ltd | Improvements in or relating to paper feed drives |
| CN203638818U (en) * | 2013-11-01 | 2014-06-11 | 涂明招 | Eccentric speed-governing cloth rolling machine |
| CN104291141A (en) * | 2014-10-10 | 2015-01-21 | 长兴劲屹纺织机械有限公司 | Cloth rolling device |
| CN106120117A (en) * | 2016-09-21 | 2016-11-16 | 重庆群禾纺织有限公司 | A kind of rolling-up device of loom |
| CN110329933A (en) * | 2019-07-19 | 2019-10-15 | 河北昇华卷扬机制造有限公司 | A kind of hoist engine and its hoist engine control method |
| CN211393218U (en) * | 2019-12-31 | 2020-09-01 | 盐城市兴宏布业有限公司 | Asbestos cloth rolling machine |
| CN211545350U (en) * | 2020-01-04 | 2020-09-22 | 嘉兴市旭海纺织有限公司 | Cloth winding device |
| CN111910418A (en) * | 2020-06-10 | 2020-11-10 | 桐乡市中瑞环保科技有限公司 | Adjustable cutting equipment for melt-blown fabric |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790646A (en) * | 2022-05-10 | 2022-07-26 | 宁国金诺制衣有限公司 | Automatic cloth cutting device |
| CN114790646B (en) * | 2022-05-10 | 2024-04-16 | 宁国金诺制衣有限公司 | Automatic cloth cutting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112481866B (en) | Textile cloth wetting device for spinning | |
| CN109720919A (en) | The film coiled strip equipment of food pack | |
| CN112722957A (en) | Relaxation degree control device for melt-blown fabric production and use method thereof | |
| CN114314093B (en) | Winding device for packaging EVA adhesive film of solar photovoltaic module | |
| CN216968991U (en) | Surgical paper towel production facility | |
| CN213474935U (en) | A straining device for melting cloth spreading machine that spouts | |
| CN215854231U (en) | Tensioning mechanism of printing and dyeing rolling machine | |
| CN113388973B (en) | Embroidery machine cloth overspeed device tensioner is used in processing of cross-stitch fabrics | |
| CN214326667U (en) | Cloth inspection machine with adjustable width | |
| CN213679061U (en) | Winding device for automatically adjusting micro-tension of melt-blown fabric | |
| CN113753635A (en) | A melt-blown fabric winding equipment for gauze mask processing | |
| CN203806844U (en) | Carbon fiber filtering core winding machine | |
| CN218826408U (en) | Wrapping mechanism | |
| CN209684965U (en) | A kind of non-woven fabrics up- coiler | |
| CN218619472U (en) | Automatic fabric winding device | |
| CN220811213U (en) | Winding equipment for nylon production | |
| CN201080379Y (en) | Thin film stretching device for wrapping machine | |
| CN220099316U (en) | Double spandex textile application device | |
| CN111747171A (en) | Device is put to high-efficient rolling of industrial cloth | |
| CN220925817U (en) | Textile fabric flattening device | |
| CN221161476U (en) | Winding assembly of leno fabric finished product for rubber tube | |
| CN220866688U (en) | Reverse osmosis membrane water conservancy diversion cloth rolling closing device | |
| CN216786500U (en) | Tractive device is used in rayon production | |
| CN218968487U (en) | Can carry out coiling mechanism for production of tension adjustment's nylon textile | |
| CN211687602U (en) | Cloth winding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210430 |