CN220258532U - Improve spreading machine for non-woven fabrics production quality - Google Patents
Improve spreading machine for non-woven fabrics production quality Download PDFInfo
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- CN220258532U CN220258532U CN202321418750.1U CN202321418750U CN220258532U CN 220258532 U CN220258532 U CN 220258532U CN 202321418750 U CN202321418750 U CN 202321418750U CN 220258532 U CN220258532 U CN 220258532U
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- glue
- woven fabrics
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- roller
- platform
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 85
- 238000003892 spreading Methods 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000003292 glue Substances 0.000 claims abstract description 238
- 238000003860 storage Methods 0.000 claims abstract description 20
- 238000007790 scraping Methods 0.000 claims description 33
- 238000003825 pressing Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 238000004026 adhesive bonding Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims 1
- 238000010073 coating (rubber) Methods 0.000 abstract description 35
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 35
- 239000000463 material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model relates to an improve spreading machine for non-woven fabrics production quality relates to the field of non-woven fabrics processing, it includes the rubber coating platform and spans the support of locating on the rotation platform, rotate on the support and be connected with the rubber coating roller, be connected with the roll-type glue on the rubber coating platform mesa with rubber coating roller parallel rotation, leave the clearance that supplies the non-woven fabrics to pass through between rubber coating roller and the roll-type glue, be close to rubber coating platform feed end one side on the support and be equipped with Chu Jiaocang in rubber coating platform top, the intercommunication has into the rubber tube on the storage rubber bin, be connected with the flow control valve on the rubber tube, the bottom in storage rubber bin is equipped with out the glue mouth, out the glue mouth is equipped with the opening baffle, the length direction of out the glue mouth is unanimous with the length direction of rubber coating roller. This application has the rubber coating even, efficient effect.
Description
Technical Field
The application relates to the technical field of non-woven fabric processing, in particular to a glue spreader for improving the production quality of non-woven fabrics.
Background
The non-woven fabric, also called non-woven fabric and non-woven fabric, is mainly formed by using polymer slices, short fibers or filaments to form a net by air flow or machinery, then performing water needling, needle punching and hot rolling reinforcement, and finally performing post-finishing to form the non-woven fabric, wherein in the non-woven fabric hot rolling reinforcement process, a glue spreader is used for gluing and reinforcing the non-woven fabric.
At present, common spreading machine includes a plurality of non-woven fabrics drive roller and rubberizing device, and rubberizing device includes glue groove, glue spreader and roll, and glue spreader and roll rotate and connect on the spreading machine, and the roll setting is in glue spreader top, and glue spreader partly soaks in the glue groove, and the non-woven fabrics passes through between glue spreader and the roll, and glue spreader dips in the glue groove from the glue groove, and rotates to coat the glue solution on the non-woven fabrics, then the roll carries out the average to the non-woven fabrics that scribbles the glue solution and compacts the pressure, effectively carries out solidification treatment to the non-woven fabrics.
With respect to the related art in the above, there are the following drawbacks: when the non-woven fabrics is between rubber roll and glue spreader, glue solution is got in the glue solution tank to the glue spreader, then contact with the non-woven fabrics when the glue spreader rotates, effectively coat the glue solution on the non-woven fabrics, but accomplish the mode to the non-woven fabrics coating through glue spreader rotation dip in glue solution, difficult control glue spreader dips in the volume, on leading to same non-woven fabrics, the region that thickness is different probably appears, reduces product production quality, need further improve this.
Disclosure of Invention
In order to solve the problem that glue solution dipping amount of a glue spreader is not easy to control, so that non-woven fabric glue solution is not uniformly covered, and production quality of products is reduced, the application provides a glue spreader for improving non-woven fabric production quality.
The application provides an improve spreading machine for non-woven fabrics production quality adopts following technical scheme:
the utility model provides an improve spreading machine for non-woven fabrics production quality, includes the spreading platform and spans and locate support on the rotating platform, rotate on the support and be connected with the spreading roller, on the spreading platform mesa with spreading roller parallel rotation is connected with the roll, the spreading roller with leave the clearance that supplies the non-woven fabrics to pass through between the roll, be close to on the support spreading platform feed end one side in spreading platform top is equipped with Chu Jiaocang, the intercommunication has into the rubber tube on the storage rubber bin, be connected with the flow control valve on the rubber tube, the bottom that stores up the rubber bin is equipped with out the rubber mouth, it is equipped with the opening baffle to go out the rubber mouth, go out the length direction of rubber mouth with the length direction of spreading roller is unanimous.
Through adopting above-mentioned technical scheme, will store up and fill up the glue solution through advancing the rubber tube in the glue storehouse, before glue spreader and roll, open the glue outlet and evenly glue on the non-woven fabrics, when non-woven fabrics pass through glue spreader and roll, effectively with the glue solution coating on the non-woven fabrics even to form the sizing material of certain thickness, guarantee non-woven fabrics rubber coating quality, glue coating efficiency is high.
Optionally, still be equipped with the adjustment mechanism who is used for adjusting non-woven fabrics rubber coating thickness on the rubber coating platform, adjustment mechanism is including being used for adjusting the rubber coating roller with the altitude mixture control subassembly in clearance between the rubber press roller and be used for adjusting the play glue outlet size flows the subassembly.
Through adopting above-mentioned technical scheme, if the rubber coating thickness of non-woven fabrics has different demands, then adjust the clearance between rubber coating roller and the roll rubber through altitude mixture control spare in order to adapt to the sizing material thickness of non-woven fabrics, then adjust the play glue volume of play glue mouth again according to the interval between rubber coating roller and the roll rubber for play glue volume adaptation sizing material thickness requirement, regulation and control are accurate, convenient operation.
Optionally, the altitude mixture control subassembly includes rotation cover and driving piece, the pivot both ends of glue spreader with rotate the cover and rotate and be connected, rotate cover sliding connection in on the support, the driving piece is located the support top is used for the drive rotate the cover and follow the direction of height of support slides.
Through adopting above-mentioned technical scheme, use driving piece drive to rotate the cover and slide along the direction of height of support to effectively adjust the mounted position of glue spreader, make the interval adaptation non-woven fabrics rubber coating thickness demand between glue spreader and the roll, simple structure, reliable.
Optionally, the flow control assembly comprises a power part, the opening baffle is slidably connected to the end wall of the glue outlet, and the power part is arranged on the glue storage bin and used for driving the opening baffle to slide along the width direction of the glue outlet.
Through adopting above-mentioned technical scheme, use power spare drive opening baffle to slide along open-ended width direction, the size of effective control play glue mouth for play glue volume adaptation non-woven fabrics rubber coating thickness demand of play glue mouth department, easy operation, convenient.
Optionally, a baffle is arranged on the end wall of the glue outlet at one side opposite to the sliding of the opening baffle, the baffle is arranged in a downward inclined manner, and the opening baffle slides towards the baffle.
Through adopting above-mentioned technical scheme, from the glue solution that falls in glue outlet, through the guide of guide plate, more even abundant flow falls on the non-woven fabrics, increases the rubber coating degree of consistency, promotes non-woven fabrics rubber coating quality.
Optionally, two fixedly connected with slip fixture blocks on the rotation cover, two slip fixture blocks respectively sliding connection in the support both sides, the output of driving piece with slip fixture block fixed connection, two be equipped with the frictioning piece between the slip fixture block, the frictioning piece is used for striking off unnecessary glue solution on the glue spreader.
Through adopting above-mentioned technical scheme, will rotate the cover and be connected with sliding fixture block, when sliding fixture block slides on with the support, effectively drive the glue spreader and adjust mounting height, and connect the frictioning piece between two sliding fixture blocks for the glue spreader can scrape unnecessary glue solution on the glue spreader when rotating, reduces the glue spreader adhesion more glue solution and influences the condition of glue spreading quality, simple structure, reliable.
Optionally, the frictioning piece includes the frictioning board, the frictioning board is close to the discharge end of rubber coating platform is connected in two between the slip fixture block, the scraping end of frictioning board is located the below of rubber coating roller with be equipped with between the rubber coating roller and scrape the material district, just the scraping end of frictioning board is upwards crooked to be set up.
Through adopting above-mentioned technical scheme, the scraping end of scraping the rubber coating board is located the below of rubber coating roller, and upwards crooked setting, after the glue solution volume on the rubber coating roller exceeded the allowed range, then can be scraped by the rubber coating board to make the glue solution flow direction that scrapes in the crooked lateral wall of rubber coating board, reduce the condition that the glue solution appears the drip on the rubber coating board, convenient to use, reliable.
Optionally, a return pipe is arranged at any end of the scraping plate, the curved side wall of the scraping plate is obliquely arranged towards the return pipe, and the return pipe is communicated with the rubber inlet pipe.
Through adopting above-mentioned technical scheme, the glue solution on the scraping plate flows into the back flow in along scraping plate slope lateral wall directness, then flows back into the rubber inlet tube through the back flow and put into use again, effective resources are saved.
To sum up, the application includes the following at least one glue spreader for improving the production quality of non-woven fabrics:
1. through the glue storage bin and the glue inlet pipe, glue is filled into the glue storage bin through the glue inlet pipe, at the moment, the glue outlet is in a closed state, and before the glue spreading roller and the glue pressing roller, the glue outlet is opened to uniformly spread glue on the non-woven fabric until the non-woven fabric starts to spread glue;
2. through the altitude mixture control spare and the accuse subassembly that flow that set up, use altitude mixture control spare to regulate and control the interval between rubber coating and the roll for the rubber coating thickness on the non-woven fabrics obtains adjusting, and adjusts the opening size of glue outlet in order to make out the non-woven fabrics thickness requirement of glue volume adaptation according to the rubber coating thickness requirement on the non-woven fabrics simultaneously, non-woven fabrics rubber coating precision is high.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
fig. 2 is a schematic structural view for showing a glue storage bin according to an embodiment of the present application;
fig. 3 is a schematic structural view for showing a doctor blade according to an embodiment of the present application.
Reference numerals: 1. a gluing platform; 2. a bracket; 3. a glue spreading roller; 4. a glue roller; 5. chu Jiaocang; 50. a rubber inlet pipe; 500. a flow control valve; 6. a glue outlet; 60. an opening baffle; 7. an adjusting mechanism; 70. a rotating lever; 71. a rotating sleeve; 72. a driving member; 73. a power member; 730. a support plate; 8. a deflector; 9. sliding the clamping block; 90. a rubber scraping plate; 91. scraping area; 92. and (5) a return pipe.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The embodiment of the application discloses improve spreading machine for non-woven fabrics production quality, refer to fig. 1 and 2, including rubber coating platform 1 with span bracket 2 of locating on the rotation platform, in this embodiment, the cross-section of bracket 2 is the door type setting, and rotate on bracket 2 between two vertical support bodies and be connected with glue spreader 3, glue spreading platform 1 mesa is gone up and glue spreader 3 parallel rotation is connected with glue spreader 4, leave the clearance that supplies the non-woven fabrics to pass through between glue spreader 3 and the glue spreader 4, make the non-woven fabrics pass through drive roller (not shown in the figure) drive when passing through glue spreader 3 and glue spreader 4, form certain sizing thickness, and by flattening, compaction. In order to further make the non-woven fabric glue spread evenly, the coating amount of glue solution on the non-woven fabric is controlled, referring to fig. 1 and 2, in this embodiment, a glue storage bin 5 is arranged above the glue spreading platform 1 on one side of the bracket 2 near the feeding end of the glue spreading platform 1, the length direction of the glue storage bin 5 is consistent with the length direction of the glue spreading platform 1 of the glue spreading roller 3, a glue inlet pipe 50 is further communicated with the glue storage bin 5, the glue inlet pipe 50 is communicated with a glue solution tank (not shown in the figure) for storing glue solution, a flow control valve 500 is connected to the glue inlet pipe 50, glue solution can be supplied into the glue storage bin 5 through the glue inlet pipe 50, and the glue storage bin 5 is filled with glue solution. The bottom of the glue storage bin 5 is further provided with a glue outlet 6, the glue outlet 6 is provided with an opening baffle 60, and the length direction of the glue outlet 6 is consistent with the length direction of the glue spreader 3.
Before the non-woven fabrics glue coating, glue solution is fully filled into the glue storage bin 5 through the glue feeding pipe 50, at this moment, the glue outlet 6 is closed by the opening baffle 60, until the non-woven fabrics begin to be coated with glue, the glue is continuously and evenly leaked from the glue outlet 6 to the non-woven fabrics, the glue feeding pipe 50 also keeps the glue injection state in the glue storage bin 5, further, when the non-woven fabrics pass through the glue coating roller 3 and the glue pressing roller 4, the glue solution is evenly coated on the non-woven fabrics, and a certain glue thickness is formed on the non-woven fabrics under the pressing action of the glue coating roller 3 and the glue pressing roller 4, the glue coating effect on the non-woven fabrics is good, and the product production quality is effectively improved.
Referring to fig. 1 and 2, in this embodiment, in order to meet the processing requirements of different non-woven fabrics, an adjusting mechanism 7 for adjusting the thickness of the non-woven fabrics is further provided on the glue spreading platform 1, and the adjusting mechanism 7 includes a height adjusting component for adjusting the gap between the glue spreading roller 3 and the glue pressing roller 4 and a flow control component for adjusting the size of the glue outlet 6. When the non-woven fabrics have different demands on gluing thickness or glue is applied to the non-woven fabrics with different thicknesses, firstly, the gap between the gluing roller 3 and the glue pressing roller 4 is adjusted by using the height adjusting assembly, the forming thickness of the non-woven fabrics glue stock is determined, and then the size of the glue outlet 6 is adjusted by using the flow control assembly, so that the glue outlet 6 is adaptive to the gluing thickness demand of the non-woven fabrics.
Referring to fig. 1, in this embodiment, the height adjusting assembly includes a rotating sleeve 71 and a driving member 72, two ends of a rotating shaft of the glue spreader 3 are rotatably connected with the rotating sleeve 71 through bearings, the two rotating sleeves 71 are respectively slidably connected to two vertical frame bodies of the support 2, the driving member 72 is disposed at the top of the support 2 and is used for driving the rotating sleeve 71 to slide along the height direction of the support 2, the height adjusting assembly includes a first electric telescopic rod disposed at the top of the support 2, and a telescopic end of the first electric telescopic rod is connected with the rotating sleeve 71.
The flow control assembly that further sets up includes power piece 73, and power piece 73 includes the electronic telescopic link of second, and opening baffle 60 sliding connection is on the end wall of glue outlet 6, and glue storage bin 5 outer wall is equipped with backup pad 730 in arbitrary one side of glue outlet 6 length direction, and the electronic telescopic link of second is located and is used for driving opening baffle 60 and slides along open-ended width direction on the backup pad 730. When the glue spreading device is used, the rotating sleeve 71 is driven by the first electric telescopic rod to slide along the height direction of the support 2, the thickness of glue between the glue spreading roller 3 and the glue pressing roller 4 is effectively regulated, then the size of a gap between the glue spreading roller 3 and the glue pressing roller 4 is effectively regulated, the opening baffle 60 is driven by the second electric telescopic rod to slide along the width direction of the glue outlet 6, the glue outlet 6 glue outlet amount is controlled by the opening baffle 60, the glue outlet amount is matched with the glue thickness requirement, the operation is simple and convenient, and the control precision is high.
Referring to fig. 2, in this embodiment, a baffle 8 is further disposed on the end wall of the opening at one side opposite to the sliding of the baffle 60, and the baffle 8 is disposed obliquely downward, so that the glue solution flows more uniformly to the non-woven fabric and slides the baffle 60 toward the baffle 8, when the baffle 60 abuts against the baffle 8, the glue outlet 6 is closed, and the gap between the baffle 60 and the baffle 8 is adjusted by sliding, so that the glue outlet flow can be regulated and controlled, and the structure is simple and reliable.
Referring to fig. 1 and 3, in this embodiment, a portion of glue solution is adhered to the glue spreader 3 during use, if the glue solution is not cleaned timely, the adhesive amount on the glue spreader 3 increases, the adhesive effect of the nonwoven fabric will be further affected in the later stage, so sliding clamping blocks 9 are fixedly connected to the two rotating sleeves 71, sliding grooves are formed in the two vertical frames of the bracket 2, the two sliding clamping blocks 9 are respectively and slidably clamped in the two sliding grooves, a glue scraping piece is further arranged between the two sliding clamping blocks 9, the glue scraping piece comprises a glue scraping plate 90, the discharge end of the glue scraping plate 90, which is close to the glue spreading platform 1, is connected between the two sliding clamping blocks 9, a scraping area 91 is arranged between the lower portion of the glue spreader 3 and the glue spreader 3, and when the adhesive solution adhered to the glue spreader 3 exceeds the width of the scraping area 91, the glue scraping plate 90 automatically scrapes off excessive glue solution during rotation of the glue spreader 3. Further still with scraping the setting of scraping the material end upwards crooked of offset plate 90 for scrape the material end of scraping the offset plate and strike off the glue solution on the glue spreader 3 back and flow to the crooked region of scraping the offset plate, reduce the glue solution and appear dripping the condition, and be equipped with back flow 92 at the arbitrary one end of scraping the offset plate, back flow 92 communicates with advance rubber tube 50 through the glue groove, the crooked lateral wall of offset plate 90 inclines towards back flow 92 and sets up, make the glue solution that is scraped further flow back flow 92 internal reflux use, effectively improve the rubber coating quality, resources are saved.
The implementation principle of the glue spreader for improving the production quality of the non-woven fabric is as follows: when the non-woven fabric is subjected to gluing treatment, glue solution is fully filled in the glue storage bin 5, before the non-woven fabric passes through the glue spreader 3 and the glue pressing roller 4, the glue outlet 6 is opened to glue the non-woven fabric with a uniform speed, and when the non-woven fabric passes through the glue spreader 3 and the glue pressing roller 4 again, the glue solution is effectively coated, so that glue with a certain thickness is formed on the non-woven fabric, the non-woven fabric is glued uniformly, the product quality is high, and in addition, if the glue thickness of the non-woven fabric is required, the glue forming thickness of the non-woven fabric material is regulated and controlled through the height regulating piece, and the glue amount on the non-woven fabric is matched with the glue thickness requirement through the flow control assembly, so that the gluing efficiency is high.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. The utility model provides an improve spreading machine for non-woven fabrics production quality which characterized in that: the glue spreading device comprises a glue spreading platform (1) and a support (2) which is transversely arranged on the glue spreading platform (1), wherein a glue spreading roller (3) is rotationally connected to the support (2), a glue pressing roller (4) is rotationally connected to the table top of the glue spreading platform (1) in parallel with the glue spreading roller (3), a gap for a non-woven fabric to pass through is reserved between the glue spreading roller (3) and the glue pressing roller (4), chu Jiaocang (5) is arranged above the glue spreading platform (1) and is close to one side of a feeding end of the glue spreading platform (1) on the support (2), a glue feeding pipe (50) is communicated with the glue storage bin (5), a flow control valve (500) is connected to the glue feeding pipe (50), a glue outlet (6) is arranged at the bottom of the glue storage bin (5), an opening baffle (60) is arranged at the glue outlet (6), and the length direction of the glue outlet (6) is consistent with the length direction of the glue spreading roller (3). The device is characterized in that an adjusting mechanism (7) for adjusting the glue coating thickness of the non-woven fabric is further arranged on the glue coating platform (1), and the adjusting mechanism (7) comprises a height adjusting component for adjusting the gap between the glue coating roller (3) and the glue pressing roller (4) and a flow control component for adjusting the size of the glue outlet (6).
2. The spreading machine for improving the production quality of non-woven fabrics according to claim 1, wherein: the height adjusting assembly comprises a rotating sleeve (71) and a driving piece (72), two ends of a rotating shaft of the glue spreader (3) are fixedly connected with the rotating sleeve (71), the rotating sleeve (71) is slidably connected to the support (2), and the driving piece (72) is arranged at the top of the support (2) and used for driving the rotating sleeve (71) to slide along the height direction of the support (2).
3. The spreading machine for improving the production quality of non-woven fabrics according to claim 2, wherein: the flow control assembly comprises a power piece (73), the opening baffle (60) is connected to the end wall of the glue outlet (6) in a sliding mode, and the power piece (73) is arranged on the glue storage bin (5) and used for driving the opening baffle (60) to slide along the width direction of the glue outlet (6).
4. A glue spreader for improving the quality of nonwoven fabric production according to claim 3, wherein: the glue outlet (6) is characterized in that a guide plate (8) is arranged on one side, opposite to the sliding direction of the opening baffle (60), of the end wall of the glue outlet, the guide plate (8) is arranged in a downward inclined mode, and the opening baffle (60) slides towards the guide plate (8).
5. The spreading machine for improving the production quality of non-woven fabrics according to claim 2, wherein: two fixedly connected with slip fixture block (9) on rotating sleeve (71), two slip fixture block (9) respectively sliding connection in support (2) both sides, the output of driving piece (72) with slip fixture block (9) fixed connection, two be equipped with the frictioning piece between slip fixture block (9), the frictioning piece is used for striking off unnecessary glue solution on glue spreader (3).
6. The glue spreader for improving the production quality of non-woven fabrics according to claim 5, wherein: the scraping part comprises a scraping plate (90), the scraping plate (90) is close to the discharging end of the gluing platform (1) and connected between the two sliding clamping blocks (9), the scraping end of the scraping plate (90) is located below the gluing roller (3) and a scraping area (91) is arranged between the gluing roller (3), and the scraping end of the scraping plate (90) is bent upwards.
7. The glue spreader for improving the production quality of non-woven fabrics according to claim 6, wherein: the automatic glue scraping device is characterized in that a return pipe (92) is arranged at any end of the glue scraping plate (90), the bent side wall of the glue scraping plate (90) is obliquely arranged towards the return pipe (92), and the return pipe (92) is communicated with the glue inlet pipe (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321418750.1U CN220258532U (en) | 2023-06-02 | 2023-06-02 | Improve spreading machine for non-woven fabrics production quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321418750.1U CN220258532U (en) | 2023-06-02 | 2023-06-02 | Improve spreading machine for non-woven fabrics production quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220258532U true CN220258532U (en) | 2023-12-29 |
Family
ID=89306495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321418750.1U Active CN220258532U (en) | 2023-06-02 | 2023-06-02 | Improve spreading machine for non-woven fabrics production quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220258532U (en) |
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2023
- 2023-06-02 CN CN202321418750.1U patent/CN220258532U/en active Active
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