CN214818846U - Plastic profile cutting machine with rough selvedge cleaning mechanism - Google Patents
Plastic profile cutting machine with rough selvedge cleaning mechanism Download PDFInfo
- Publication number
- CN214818846U CN214818846U CN202120824666.4U CN202120824666U CN214818846U CN 214818846 U CN214818846 U CN 214818846U CN 202120824666 U CN202120824666 U CN 202120824666U CN 214818846 U CN214818846 U CN 214818846U
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- plate
- burr
- electric telescopic
- welded
- cutting machine
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- 239000004033 plastic Substances 0.000 title claims abstract description 56
- 229920003023 plastic Polymers 0.000 title claims abstract description 56
- 238000005520 cutting process Methods 0.000 title claims abstract description 48
- 230000007246 mechanism Effects 0.000 title claims abstract description 15
- 238000004140 cleaning Methods 0.000 title claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 238000007790 scraping Methods 0.000 claims abstract description 14
- 238000001125 extrusion Methods 0.000 claims description 30
- 230000001050 lubricating effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 11
- 238000012797 qualification Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241000263306 Chilomycterus schoepfii Species 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000010405 clearance mechanism Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a plastic profile cutting machine with a burr cleaning mechanism, which is characterized by comprising a workbench, an elastic rotating shaft, a protective cover, a motor, a cutting knife, an adjustable clamp, a base, a supporting plate, a handle, a top plate, a vertical positioning structure, a transverse positioning structure and a burr scraping structure, wherein the upper side of the base is provided with the vertical positioning structure; a transverse positioning structure is arranged on the front side of the supporting plate; two be provided with deckle edge between the backup pad and strike off the structure, through the utility model discloses for plastics profile shapes cutting machine is after cutting plastics profile shapes, swift convenient detach burr deckle edge, has improved the assembly precision of plastics profile shapes in the site operation, and the cooperation error's of avoiding appearance has improved the qualification rate of construction and product, and after going out the burr, has also avoided being in the work progress, and the staff appears being scratched the condition of hindering the hand by the burr, has improved job site's factor of safety.
Description
Technical Field
The utility model relates to a plastics profile shapes cutting machine technical field especially relates to a plastics profile shapes cutting machine with deckle edge clearance mechanism.
Background
The plastic profile cutting machine is suitable for cutting profiles made of plastic materials, and is also suitable for sawing materials such as various special-shaped metal aluminum, aluminum alloy, copper alloy, carbon fiber and the like, and is particularly suitable for sawing aluminum doors and windows, photo frames, plastic steel, bakelite plates, aluminum extruded shapes, paper tubes and profiles; the material is sawn by holding the pressing handle, so that the material is not easy to deform and has low loss; the sawing angle is accurate; the vibration is small, and the noise is low; the operation is simple, the efficiency is high, single or multiple saw cuts can be carried out together, any beveling can be carried out in the left direction or the right direction, and the like;
the traditional plastic profile cutting machine comprises a cutting machine for large-scale production used in factories and a small plastic profile cutting machine for construction sites, wherein the cutting machine for large-scale production in the prior art is advanced in technology and high in cutting operation precision, so when the cutting machine is used for cutting and producing plastic profiles, cut sections are very flat and can not generate burrs, but the small plastic profile cutting machine for the construction sites is dull in blades and low in precision due to manual operation, and finally the section is uneven, and a lot of burrs and burrs are generated, and the burrs and burrs are plastic materials and can still affect construction and installation in the later period, for example, the burrs with larger size can affect the installation precision of butt joint of two plastic profiles, so that the plastic profiles generate error matching, and the product and construction qualification rate are reduced, and a small amount of burrs can also make the staff in the in-process of construction, have the risk of hand by the burr fish tail, reduce the factor of safety of construction.
Disclosure of Invention
According to the technical problem, the utility model provides a plastic profile cutting machine with a burr cleaning mechanism, which is characterized in that the plastic profile cutting machine comprises a workbench, an elastic rotating shaft, a protective cover, a motor, a cutting knife, an adjustable clamp, a base, a handle, a supporting plate, a top plate, a vertical positioning structure, a transverse positioning structure and a burr scraping structure, wherein the elastic rotating shaft is arranged at the top of the workbench; the elastic rotating shaft is rotatably connected with a protective cover; a cutting knife is rotatably connected inside the protective cover; the right side wall of the protective cover is provided with a motor through a bolt; the motor is connected with an external power supply; the motor is matched with the cutting knife for use; a handle is arranged on the rear side wall of the protective cover through a bolt; the top of the workbench is provided with an adjustable clamp through a bolt; the front side wall of the workbench is provided with a base through a bolt; a supporting plate is welded at the top of the base; the number of the supporting plates is two; the top parts of the two supporting plates are respectively welded with a top plate; a vertical positioning structure is arranged on the upper side of the base; a transverse positioning structure is arranged on the front side of the supporting plate; a burr scraping structure is arranged between the two supporting plates;
the vertical positioning structure consists of a vertical electric telescopic rod, a first positioning plate, a first spring rod, a sliding block and an extrusion plate, and mounting grooves are respectively formed in the base and the top plate; the interior of the mounting groove is respectively provided with a vertical electric telescopic rod through bolts; the vertical electric telescopic rod is connected with an external power supply; one end of a first positioning plate is welded at the output end of the vertical electric telescopic rod; one end of a first spring rod is welded on the opposite side walls of the two first positioning plates respectively; the number of the first spring rods is N, and N is more than or equal to 2; one end of the top of the first spring rod is welded with a first extrusion plate; two ends of the two first positioning plates are respectively welded with a sliding block; the opposite side walls of the supporting plate are respectively provided with a sliding groove; the two sliding grooves are respectively connected with the sliding block in a sliding manner;
the transverse positioning structure consists of external blocks, a transverse electric telescopic rod, a second positioning plate, a second spring rod and a second extrusion plate, wherein the external blocks are welded on the front side walls of the two external blocks respectively; mounting grooves are respectively formed in opposite side walls of the two external blocks; a transverse electric telescopic rod is arranged in the mounting groove through a bolt; the transverse electric telescopic rod is connected with an external power supply; one end of a second spring rod is welded on the opposite side wall of the transverse electric telescopic rod respectively; the number of the first spring rods is M, and M is more than or equal to 2; the other end of the second spring rod is welded with a second extrusion plate;
the burr scraping mechanism consists of a cushion block, a scraper blade, a fixed plate and a lubricating block; the opposite side walls of the first extrusion plate and the second extrusion plate are respectively welded with one side of the cushion block; the number of the cushion blocks is two; the cross section of the cushion block is of a triangular structure; the other side wall of the cushion block is provided with a fixing plate through a bolt; the fixing plate is of a V-shaped structure; a scraper blade is arranged between the fixed plate and the cushion block through a bolt; a lubricating block is arranged on the side wall of the fixing plate far away from the cushion block; the number of the lubricating blocks is two; the lubricating block is made of smooth resin; the stick is mounted slightly higher relative to the pad than the tip of the blade.
The utility model has the advantages that:
the utility model discloses increased vertical location structure, horizontal location structure and deckle edge and struck off the structure, reached the utility model discloses after cutting the profile shapes, can remove deckle edge's purpose to two sections profile shapes that cut, the utility model discloses when using, the personnel need utilize adjustable fixture to fix the plastics profile shapes that need processing at first, and make the other end of plastics profile shapes pass between base, backup pad and the roof simultaneously, and open vertical electric telescopic handle and horizontal electric telescopic handle's external power simultaneously; the vertical electric telescopic rod and the horizontal electric telescopic rod respectively push the first positioning plate and the second positioning plate to move towards opposite directions, so that the first extrusion plate and the second extrusion plate carry out extrusion positioning in four directions on two pairs of plastic profiles, at the moment, the lubricating block can prop against the side wall of the plastic profiles, the first spring rod and the second spring rod are in a compression state, at the moment, the plastic profiles are simultaneously fixed by the adjustable clamp, cutting can be started, an external power supply of the motor is turned on, the cutting knife rotates to press the handle downwards to finish cutting, then, the handle is released, the cutting knife resets under the action of the rebounding rotating shaft to disconnect the external power supply of the motor, at the moment, one end of the plastic profiles, which is far away from the adjustable clamp, is grasped to be directly pulled, and when the plastic profiles are pulled under the action of the lubricating block, burrs and burrs of the section of the plastic profiles can be scraped by utilizing the scraper blade, simultaneously, the external power supplies of the vertical electric telescopic rod and the transverse electric telescopic rod are opened to ensure that the first extrusion plate and the second extrusion plate return to the original positions, and loosening the adjustable clamp, passing the other section of the plastic profile through the space between the base, the supporting plate and the top plate, opening the external power supply of the vertical electric telescopic rod and the transverse electric telescopic rod, repeating the operation to scrape the rough edges and burrs of the section, by the utility model, after the plastic profile is cut by the plastic profile cutting machine, burrs are removed quickly and conveniently, the assembly precision of the plastic profile in site construction is improved, the occurrence of matching errors is avoided, the construction and product qualification rate is improved, after the burrs are removed, the condition that workers scratch hands by the burrs in the construction process is avoided, and the safety factor of a construction site is improved;
it is worth noting that the utility model is provided with the cushion block with a triangular structure; the V-shaped fixing plate realizes the purpose of clamping two scraper blades, so that the rough edge scraping structure of the utility model can realize the effect of bidirectional scraping, the plastic profile can be scraped without being disassembled from the adjustable fixture, and the use timeliness of the utility model is improved; the utility model discloses a set up the lubricant cake of resin material to make the lubricant cake slightly higher than the top of blade for the mounted position of cushion said, the purpose of doing so guaranteed that the blade edge of a knife blade does not with the surperficial direct contact of plastics profile shapes, do not influence again under striking off unedged, make the surface of lubricant cake contact plastics profile shapes, utilize the scraper blade to strike off the burr, simultaneously under the characteristic of resin material self, also avoided scraping the condition of flower wearing and tearing to plastics profile shapes production, the quality of product and the integrality of outward appearance have been guaranteed.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic front view of the internal structure of the present invention;
fig. 3 is an overall schematic view of the vertical positioning structure of the present invention;
FIG. 4 is a schematic overall view of the lateral positioning structure of the present invention;
fig. 5 is an overall schematic view of the burr scraping structure of the present invention;
fig. 6 is an enlarged schematic view of a portion a in fig. 5 according to the present invention.
As shown in the figure: 1-workbench, 2-elastic rotating shaft, 21-protective cover, 22-motor, 23-cutting knife, 24-handle, 3-adjustable clamp, 4-base, 41-supporting plate, 42-top plate, 43-vertical electric telescopic rod, 44-first positioning plate, 45-first spring rod, 46-sliding block, 47-first extrusion plate, 48-sliding groove, 5-external block, 51-transverse electric telescopic rod, 52-second positioning plate, 53-second spring rod, 54-second extrusion plate, 6-cushion block, 61-scraper blade, 62-fixing plate and 63-lubricating block.
Detailed Description
Example 1
The utility model provides a plastic profile cutting machine with a burr cleaning mechanism, which is characterized by comprising a workbench 1, an elastic rotating shaft 2, a protective cover 21, a motor 22, a cutting knife 23, an adjustable clamp 3, a handle 24, a base 4, a supporting plate 41, a top plate 42, a vertical positioning structure, a transverse positioning structure and a burr scraping structure, wherein the elastic rotating shaft 2 is arranged at the top of the workbench 1; the elastic rotating shaft 2 is rotatably connected with a protective cover 21; a cutting knife 23 is rotatably connected inside the protective cover 21; the right side wall of the protective cover 21 is provided with a motor 22 through a bolt; the motor 22 is connected with an external power supply; the motor 22 is matched with the cutting knife 23; a handle 24 is mounted on the rear side wall of the protective cover 21 through bolts; the top of the workbench 1 is provided with an adjustable clamp 3 through a bolt; the front side wall of the workbench 1 is provided with a base 4 through bolts; the top of the base 4 is welded with a support plate 41; the number of the support plates 41 is two; the top plates 42 are welded to the tops of the two support plates 41 respectively; a vertical positioning structure is arranged on the upper side of the base 4; the front side of the supporting plate 41 is provided with a transverse positioning structure; a burr scraping structure is arranged between the two supporting plates 41;
the vertical positioning structure consists of a vertical electric telescopic rod 43, a first positioning plate 44, a first spring rod 45, a sliding block 46 and a first extrusion plate 47, and mounting grooves are respectively formed in the base 4 and the top plate 42; the interior of the mounting groove is respectively provided with a vertical electric telescopic rod 43 through a bolt; the vertical electric telescopic rod 43 is connected with an external power supply; one end of a first positioning plate 44 is welded at the output end of the vertical electric telescopic rod 43; one end of a first spring rod 45 is welded on the opposite side walls of the two first positioning plates 44 respectively; the number of the first spring rods 45 is N, wherein N is more than or equal to 2; a first extrusion plate 47 is welded at one end of the top of the first spring rod 45; two ends of the two first positioning plates 44 are respectively welded with a sliding block 46; the opposite side walls of the supporting plate 41 are respectively provided with a sliding groove 48; the two sliding grooves 48 are respectively connected with the sliding blocks 46 in a sliding manner;
the transverse positioning structure consists of external blocks 5, a transverse electric telescopic rod 51, a second positioning plate 52, a second spring rod 53 and a second extrusion plate 54, wherein the external blocks 5 are welded on the front side walls of the two external blocks 5 respectively; the opposite side walls of the two external blocks 5 are respectively provided with an installation groove; a transverse electric telescopic rod 51 is arranged in the mounting groove through a bolt; the transverse electric telescopic rod 51 is connected with an external power supply; one end of a second spring rod 53 is welded on the opposite side wall of the transverse electric telescopic rod 51; the number of the first spring rods 45 is M, and M is more than or equal to 2; the other end of the second spring rod 53 is welded with a second extrusion plate 54;
the rough edge scraping mechanism consists of a cushion block 6, a scraper blade 61, a fixing plate 62 and a lubricating block 63; the opposite side walls of the first extrusion plate 47 and the second extrusion plate 54 are respectively welded with one side of the cushion block 6; the number of the cushion blocks 6 is two; the cross section of the cushion block 6 is of a triangular structure; the other side wall of the cushion block 6 is provided with a fixing plate 62 through a bolt; the fixing plate 62 has a V-shaped structure; a scraper blade 61 is arranged between the fixing plate 62 and the cushion block 6 through bolts; a lubricating block 63 is arranged on the side wall of the fixing plate 62 far away from the cushion block 6; the number of the lubricating blocks 63 is two; the lubricating block 63 is made of smooth resin; the stick 63 is mounted slightly higher relative to the pad 6 than the tip of the insert.
Example 2
When the utility model is used, firstly, workers need to fix the plastic profile to be processed by using the adjustable clamp 3, and the other end of the plastic profile passes through the base 4, the supporting plate 41 and the top plate 42 at the same time, and the external power supplies of the vertical electric telescopic rod 43 and the transverse electric telescopic rod 51 are simultaneously turned on; the vertical electric telescopic rod 43 and the horizontal electric telescopic rod 51 respectively push the first positioning plate 44 and the second positioning plate 52 to move towards opposite directions, so that the first extrusion plate 47 and the second extrusion plate 54 extrude and position the plastic profile in four directions, at the moment, the lubricating block 63 can prop against the side wall of the plastic profile, the first spring rod 45 and the second spring rod 53 are in a compression state, at the moment, the plastic profile is simultaneously fixed by the adjustable clamp 3, cutting can be started, an external power supply of the motor 22 is opened, the cutting knife 23 rotates, the handle 24 is pressed downwards, cutting can be completed, then, the handle 24 is released, the cutting knife 23 resets under the action of the rebounding rotating shaft, the external power supply of the motor 22 is disconnected, at the moment, one end of the plastic profile, which is far away from the adjustable clamp 3, is directly pulled, under the action of the lubricating block 63, the rough edges and burrs of the section of the plastic profile can be scraped by the scraper blade 61, simultaneously opening external power supplies of the vertical electric telescopic rod 43 and the transverse electric telescopic rod 51 to enable the first extrusion plate 47 and the second extrusion plate 54 to return to the original positions, loosening the adjustable clamp 3, enabling the other section of the plastic profile to penetrate through the space among the base 4, the supporting plate 41 and the top plate 42, and opening the external power supplies of the vertical electric telescopic rod 43 and the transverse electric telescopic rod 51; make vertical electric telescopic handle 43 and horizontal electric telescopic handle 51 promote first locating plate 44 again, second locating plate 52 moves to relative direction, make stripper plate one 47 and stripper plate two 54 carry out the extrusion location of four directions to the plastic profile, lubricated piece 63 can withstand the lateral wall of plastic profile this moment, and first spring beam 45 and second spring beam 53 are in compression state, the plastic profile is fixed by adjustable fixture 3 simultaneously this moment, grasp the plastic profile again and be close to the one end direct twitch of adjustable fixture 3, can strike off deckle edge and the burr of this tangent plane.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A plastic profile cutting machine with a burr cleaning mechanism is characterized by comprising a workbench, an elastic rotating shaft, a handle, a protective cover, a motor, a cutting knife, an adjustable clamp, a base, a supporting plate, a top plate, a vertical positioning structure, a transverse positioning structure and a burr scraping structure, wherein the elastic rotating shaft is installed at the top of the workbench; the elastic rotating shaft is rotatably connected with a protective cover; a cutting knife is rotatably connected inside the protective cover; the right side wall of the protective cover is provided with a motor through a bolt; the motor is connected with an external power supply; the motor is matched with the cutting knife for use; a handle is arranged on the rear side wall of the protective cover through a bolt; the top of the workbench is provided with an adjustable clamp through a bolt; the front side wall of the workbench is provided with a base through a bolt; a supporting plate is welded at the top of the base; the number of the supporting plates is two; the top parts of the two supporting plates are respectively welded with a top plate; a vertical positioning structure is arranged on the upper side of the base; a transverse positioning structure is arranged on the front side of the supporting plate; a burr scraping structure is arranged between the two supporting plates;
the vertical positioning structure consists of a vertical electric telescopic rod, a first positioning plate, a first spring rod, a sliding block and an extrusion plate, and mounting grooves are respectively formed in the base and the top plate; the interior of the mounting groove is respectively provided with a vertical electric telescopic rod through bolts; the vertical electric telescopic rod is connected with an external power supply; one end of a first positioning plate is welded at the output end of the vertical electric telescopic rod; one end of a first spring rod is welded on the opposite side walls of the two first positioning plates respectively; one end of the top of the first spring rod is welded with a first extrusion plate; two ends of the two first positioning plates are respectively welded with a sliding block; the opposite side walls of the supporting plate are respectively provided with a sliding groove; the two sliding grooves are respectively connected with the sliding block in a sliding manner;
the transverse positioning structure consists of external blocks, a transverse electric telescopic rod, a second positioning plate, a second spring rod and a second extrusion plate, wherein the external blocks are welded on the front side walls of the two external blocks respectively; mounting grooves are respectively formed in opposite side walls of the two external blocks; a transverse electric telescopic rod is arranged in the mounting groove through a bolt; the transverse electric telescopic rod is connected with an external power supply; one end of a second spring rod is welded on the opposite side wall of the transverse electric telescopic rod respectively; the other end of the second spring rod is welded with a second extrusion plate;
the burr scraping mechanism consists of a cushion block, a scraper blade, a fixed plate and a lubricating block; the opposite side walls of the first extrusion plate and the second extrusion plate are respectively welded with one side of the cushion block; the number of the cushion blocks is two; the other side wall of the cushion block is provided with a fixing plate through a bolt; a scraper blade is arranged between the fixed plate and the cushion block through a bolt; a lubricating block is arranged on the side wall of the fixing plate far away from the cushion block; the number of the lubricating blocks is two.
2. A plastic profile cutting machine with a burr cleaning mechanism according to claim 1, wherein the number of the first spring bars is N, N is more than or equal to 2.
3. A plastic profile cutting machine with a burr cleaning mechanism according to claim 1, wherein the number of the first spring bars is M, M is more than or equal to 2.
4. A plastic profile cutting machine with a burr removing mechanism according to claim 1, wherein a cross-section of said block has a triangular configuration.
5. A plastic profile cutting machine with a burr removing mechanism according to claim 1, wherein said fixing plate has a V-shaped configuration.
6. A plastic profile cutting machine with a burr removing mechanism according to claim 1, wherein said lubricating block is of a smooth resin material.
7. A plastic profile cutting machine with a burr removing mechanism according to claim 1, wherein said stick is mounted to the pad at a position slightly higher than the tip of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120824666.4U CN214818846U (en) | 2021-04-21 | 2021-04-21 | Plastic profile cutting machine with rough selvedge cleaning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120824666.4U CN214818846U (en) | 2021-04-21 | 2021-04-21 | Plastic profile cutting machine with rough selvedge cleaning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214818846U true CN214818846U (en) | 2021-11-23 |
Family
ID=78765419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120824666.4U Expired - Fee Related CN214818846U (en) | 2021-04-21 | 2021-04-21 | Plastic profile cutting machine with rough selvedge cleaning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214818846U (en) |
-
2021
- 2021-04-21 CN CN202120824666.4U patent/CN214818846U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20211123 |