CN219467231U - Composite floor hot press - Google Patents
Composite floor hot press Download PDFInfo
- Publication number
- CN219467231U CN219467231U CN202320559864.1U CN202320559864U CN219467231U CN 219467231 U CN219467231 U CN 219467231U CN 202320559864 U CN202320559864 U CN 202320559864U CN 219467231 U CN219467231 U CN 219467231U
- Authority
- CN
- China
- Prior art keywords
- fixed
- hot pressing
- composite floor
- pressing plate
- crossbeam
- 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
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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
The utility model belongs to the field of composite floor production and processing, in particular to a composite floor hot press, which comprises a workbench, wherein the bottom side of the workbench is fixedly connected with supporting legs, a lower hot pressing plate is arranged on the workbench, an upper hot pressing plate is arranged on the bottom side of a beam, a first electric sheet is fixed at the top end of a pushing rod, a first spring is fixedly connected between the movable plate and the beam, an adjusting rod is fixed on the movable plate, a limiting ring is sleeved on the adjusting rod in a sliding manner, a first electrode is fixed on the circumferential surface of the limiting ring, a locking screw is arranged on the limiting ring in a matched rotation manner, and a hydraulic cylinder is arranged on the top side of the supporting plate; the upper hot pressing plate is pressed down under the action of the hydraulic cylinder, and the pressing force of the pressing plate is controlled by adjusting the position of the limiting ring on the adjusting rod.
Description
Technical Field
The utility model relates to the field of composite floor production and processing, in particular to a composite floor hot press.
Background
The composite floor is one of the most common floors, the natural structure of the floor material is artificially changed to achieve the floor with certain physical properties meeting the expected requirements, the composite floor has a four-layer structure, namely a wear-resistant layer, a decorative layer, a base material layer and a balance layer, the composite floor is produced and processed in a hot-pressing mode, and cooling and shaping are needed after production, so that a hot-pressing device is needed.
The composite floor has special hot press now, and this kind of hot press heats the surface of hot pressboard, later gives the composite floor whole with heat transfer, also can receive the pressure that the hot press brought when the composite floor is heated, and the temperature and the pressure simultaneous action of hot press can make the interior material of composite floor more compact, also help subsides between the panel and degree simultaneously.
According to the existing hot press device, pressure is applied to the hot press plate through the hydraulic cylinder in the working process, and insufficient pressure possibly occurs in the hot press forming process, so that the falling phenomenon is caused, and the deformation and damage phenomenon of the composite floor are possibly caused due to excessive extrusion; accordingly, a composite floor hot press is proposed for the above-mentioned problems.
Disclosure of Invention
In order to make up for the defects in the prior art, the problem that the phenomenon of falling off is caused by insufficient pressure in the hot press forming process and the phenomenon of deformation and damage of the composite floor is caused by excessive extrusion is solved.
The technical scheme adopted for solving the technical problems is as follows: the utility model relates to a composite floor hot press, which comprises a workbench, wherein the bottom side of the workbench is fixedly connected with supporting legs, a lower hot pressing plate is arranged on the workbench, three guide posts are arranged at the edges of the two sides of the workbench, the guide posts can guide a beam and a movable plate, the positions of supporting plates are matched, guide holes are formed in the beam and the movable plate, the guide posts respectively penetrate through the guide holes arranged on the beam and the movable plate, so that the beam and the movable plate are assembled on the guide posts in a sliding manner, the top side of the workbench is fixedly provided with a lower hot pressing plate, the bottom side of the beam is provided with an upper hot pressing plate, a pushing rod is fixedly arranged on the beam, the top end of the pushing rod is fixedly penetrated in the beam in a sliding manner, a first electric sheet is fixedly arranged between the movable plate and the beam, a first spring is sleeved outside the pushing rod, wherein, a first electric sheet is fixed at one end of the push rod, a first spring is fixedly connected between the movable plate and the cross beam, the first spring is sleeved outside the push rod, an adjusting rod is fixed on the movable plate, a limiting ring is sleeved on the adjusting rod in a sliding way, a first electrode is fixed on the circumferential surface of the limiting ring, a locking screw is rotatably arranged on the limiting ring in a matched way, a supporting plate is fixed at the top of two guide posts positioned at the middle position, a hydraulic cylinder is arranged at the top side of the supporting plate, a pressing hammer is arranged at the action end of the hydraulic cylinder in a matched way, the pressing hammer is positioned at the top side of the movable plate, two surfaces of the composite floor can be simultaneously subjected to hot pressing work through arranging an upper hot pressing plate and a lower hot pressing plate, the working efficiency of hot pressing is improved, meanwhile, the problem of insufficient pressure and low adhesiveness in the hot pressing process can be prevented through presetting the pressure in advance, or excessive pressure, resulting in problems of deformation and damage of the composite floor.
Preferably, the supporter is installed to the one end of workstation, be fixed with the propelling movement cylinder on the supporter, can push the cooling chamber surface to the laminate flooring. The other end of workstation is fixed with the cooling chamber, the inside fan that is fixed with of cooling chamber, the surface mounting of cooling chamber has the water tank, the water tank is connected with the output cooperation of water pump, and cooling efficiency is high, has accelerated the speed of the whole production of composite floor.
Preferably, the top side of the cross beam is fixedly provided with a connecting column, the top end of the connecting column movably penetrates through the movable plate, the top end of the movable plate is rotatably provided with a baffle, the bottom of the connecting column is sleeved with a second spring, the second spring is positioned between the cross beam and the movable plate, the second spring can assist in controlling pressure and plays a role of buffering, the upper hot-pressing plate cannot rapidly contact the composite floor,
preferably, the upper hot pressing plate and the lower hot pressing plate are respectively provided with a plurality of electric heating wires, so that the hot pressing plate is heated uniformly, one side of the lower hot pressing plate is provided with a second electric sheet, one side of the upper hot pressing plate is provided with a second electrode, the hot pressing plate can rapidly generate heat through the second electric sheet and the second electrode, and when the second electric sheet and the second electrode are separated, the hot pressing plate is not heated any more, and the utility model does not need to preheat the hot pressing plate in advance, and meanwhile, the effects of environmental protection and energy saving are achieved.
Preferably, the adjusting rod is arranged in parallel with the pushing rod, the first electric sheet, the first electrode, the hydraulic cylinder and the power supply are connected into a series circuit, and the relation between the first electric sheet and the first electrode is similar to a switch, so that the pressure can be preset in advance, the pressure can be stopped in time, and the excessive pressure is prevented.
The utility model has the advantages that:
1. according to the utility model, the first electric sheet, the first electrode and the hydraulic cylinder are arranged into a serial circuit, the first electric sheet and the first electrode are used as switches, the spring is pressed down under the action of the pushing rod, then the limiting ring can be fixed by the locking screw through moving the limiting ring to the position on the adjusting rod, the pressure to be applied is determined, when the first electric sheet is contacted with the first electrode, the hydraulic cylinder stops pressing, the function of presetting the pressure in advance is realized, the problem that the pressure is insufficient in the hot press forming process, the falling phenomenon is caused, and the deformation damage of the composite floor is caused due to excessive extrusion is solved, and the working efficiency of hot press is improved;
2. according to the utility model, the cooling cavity is provided, the water tank and the water pump are arranged on the cooling cavity, and the fan is arranged in the cooling cavity, so that the problem that the composite floor cannot be cooled quickly after hot pressing is solved, and the subsequent processing operation of the composite floor is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure;
FIG. 2 is an enlarged schematic view of the portion A;
FIG. 3 is a schematic elevational view of the structure;
FIG. 4 is a schematic view of the internal structure of the cooling chamber;
fig. 5 is a schematic diagram of a cooling chamber in a front view.
In the figure: 1. support legs; 2. a work table; 3. a lower hot pressing plate; 4. an upper hot pressing plate; 5. a cross beam; 6. a guide post; 7. a connecting column; 8. a mounting sleeve; 9. a push rod; 10. a first electric sheet; 11. a first spring; 12. an adjusting rod; 13. a first electrode; 14. locking the screw rod; 15. a limiting ring; 16. a movable plate; 17. a support plate; 18. a hydraulic cylinder; 19. a commodity shelf; 20. a pushing cylinder; 21. a second electrode; 22. a second electric sheet; 23. pressing down a hammer; 24. a baffle; 25. heating wires; 26. a cooling chamber; 27. a water tank; 28. a water pump; 29. a blower; 30. a support column; 31. a second spring; 32. and a buffer 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. 1-3, a composite floor hot press comprises a workbench 2, wherein a supporting leg 1 is fixedly connected to the bottom side of the workbench 2, a lower hot pressing plate 3 is installed on the workbench 2, three guide posts 6 are installed on the edges of two sides of the workbench 2, guide holes are formed in the crossbeam 5 and a movable plate 16, the guide posts 6 respectively penetrate through the guide holes formed in the crossbeam 5 and the movable plate 16, so that the crossbeam 5 and the movable plate 16 are slidably assembled on the guide posts 6, a lower hot pressing plate 3 is fixed to the top side of the workbench 2, an upper hot pressing plate 4 is installed on the bottom side of the crossbeam 5, a push rod 9 is fixed to the crossbeam 5, the top end of the push rod 9 penetrates through the crossbeam 5 in a sliding manner, a first spring 11 is fixedly arranged between the movable plate 16 and the crossbeam 5, the first spring 11 is sleeved on the outer part of the push rod 9, an adjusting rod 12 is fixedly arranged on the movable plate 16, a limit ring 15 is slidably sleeved on the adjusting rod 12, a limit ring 15 is slidably assembled on the periphery of the movable plate 16, a limit cylinder 17 is fixedly provided on the top side of the piston rod 16, a limit cylinder 17 is fixedly matched with a rotary support plate 18, and a hydraulic cylinder 17 is fixedly arranged on the top side of the limit cylinder 17, and a hydraulic cylinder 18 is fixedly matched with the top side of the limit cylinder 17; when the hot pressing plate is used, the lower hot pressing plate 3 is fixed on the workbench 2, when the hot pressing operation is required to be carried out on the composite floor, the position of the limiting ring 15 on the adjusting rod 12 is firstly adjusted, the limiting ring 15 is fixed by the locking screw 14, the hydraulic cylinder 18 is assembled on the top side of the supporting plate 17, under the action of the guide column 6, the installation sleeve 8 is installed on the guide column 6, the movable plate 16 is pushed down by the pressing hammer 23, meanwhile, the adjusting rod 12 fixed on the movable plate 16 moves along with the movement of the movable plate 16, the pushing rod 9 is fixed on the cross beam 5, the first spring 11 is sleeved outside the pushing rod 9, the movable plate 16 is pushed down, the first spring 11 is slowly compressed until the first electric sheet 10 is tangent to the first electrode 13, the hydraulic cylinder 18 does not apply pressure any more, the movable plate 16 is not moved, namely the application of pressure is finished, the pressure is preset in advance, the problem that the composite floor is extruded and deformed due to excessive pressure can be effectively prevented, meanwhile, the problem of poor bonding degree between plates due to excessive pressure is avoided, and the hot pressing efficiency is improved.
Further, a storage rack 19 is installed at one end of the workbench 2, a pushing cylinder 20 is fixed on the storage rack 19, a cooling cavity 26 is fixed at the other end of the workbench 2, a fan 29 is fixed in the cooling cavity 26, a water tank 27 is installed on the surface of the cooling cavity 26, and the water tank 27 is connected with the output end of a water pump 28 in a matching way; when the hot pressing work is finished, the cooling cavities 26 are arranged in two and are connected through the supporting columns 30 in parallel, after the hot pressing work is finished, under the action of the pushing air cylinders 20, the composite floor after the hot pressing work can be pushed to the surface of the lower cooling cavity 26, the water pump 28 and the fan 29 simultaneously act to cool the composite floor, the fan 29 utilizes the water pump 28 to pump water into the cooling cavity 26 from the water tank 27, the fan 29 can enable the water to evaporate during the work, so that the composite floor after the hot pressing is reduced, and the composite floor after the hot pressing is convenient to enter the next layer of working procedure.
Further, a connecting column 7 is fixed on the top side of the cross beam 5, the top end of the connecting column 7 movably penetrates through the movable plate 16, the top end of the movable plate 16 is rotatably provided with a baffle 24, the bottom of the connecting column 7 is sleeved with a second spring 31, and the second spring 31 is positioned between the cross beam 5 and the movable plate 16; when the upper hot-pressing plate 4 is prevented from being excessively pressed during operation, the movable plate 16 cannot be separated from the connecting column 7 under the action of the baffle 24, the cross beam 5 and the movable plate 16 downwards apply pressure, the second spring 31 can play a role in buffering and maintaining pressure, and can serve as a certain resistance mechanism to prevent the upper hot-pressing plate 4 from being excessively fast pressed.
Further, the upper hot pressing plate 4 and the lower hot pressing plate 3 are respectively provided with a plurality of electric heating wires 25, one side of the lower hot pressing plate 3 is provided with a second electric sheet 22, and one side of the upper hot pressing plate 4 is provided with a second electrode 21; in order to uniformly heat the hot-pressing plate during operation, the electric heating wires 25 are uniformly paved in the hot-pressing plate, so that the combination of decorative layers and base layers at different positions on the composite floor is facilitated, the hot-pressing combination effect is improved, meanwhile, the second electric sheet 22 is contacted with the second electrode 21, the electric heating wires 25 can rapidly generate heat, and when the second electric sheet 22 is separated from the second electrode 21, the electric heating wires are not heated any more.
Referring to fig. 5, a buffer block 32 is fixedly installed at one end of the cooling chamber 26; in operation, the pushing cylinder 20 can be prevented from being pushed too much, so that the composite floor is pushed out of the cooling cavity 26.
The working principle is that the lower hot pressing plate 3 is fixed on the workbench 2, when the hot pressing operation is needed on the composite floor, the position of the limiting ring 15 on the adjusting rod 12 is firstly adjusted, the limiting ring 15 is fixed by the locking screw 14, the hydraulic cylinder 18 is assembled on the top side of the supporting plate 17 by starting the hydraulic cylinder 18, the installation sleeve 8 is arranged on the guide post 6 under the action of the guide post 6, the movable plate 16 is pushed down by the lower pressing hammer 23, meanwhile, the adjusting rod 12 fixed on the movable plate 16 moves along with the movement of the movable plate 16, the pushing rod 9 is fixed on the cross beam 5, the first spring 11 is sleeved outside the pushing rod 9, the movable plate 16 is pushed down, the first spring 11 is slowly pressed until the first electric sheet 10 is tangent to the first electrode 13, the hydraulic cylinder 18 does not exert pressure any more, the movable plate 16 is not moved, namely the application of pressure is explained to be completed, the pressure is preset in advance, the problem of extrusion deformation of the composite floor caused by excessive pressure two can be effectively prevented, meanwhile, the problem of poor adhesion between boards caused by excessive pressure is also avoided, the hot pressing efficiency is improved, when the hot pressing work is finished, two cooling cavities 26 are arranged in parallel and are connected by support columns 30, after the hot pressing work is finished, under the action of a pushing cylinder 20, the composite floor after the hot pressing work is finished can be pushed to the surface of a lower cooling cavity 26, a water pump 28 and a fan 29 simultaneously act to cool the composite floor, the fan 29 utilizes the water pump 28 to pump water into the cooling cavity 26 from a water tank 27, the fan 29 can evaporate the water during the work, thereby reducing the composite floor after the hot pressing, facilitating the entry of the composite floor into the next process after the hot pressing, and under the action of a baffle 24 when the upper hot pressing plate 4 is prevented from being excessively pressed, the movable plate 16 is not separated from the connecting column 7, the cross beam 5 and the movable plate 16 downwards apply pressure, the second spring 31 can play a role of buffering and pressure maintaining, can serve as a certain resistance mechanism, prevent the upper hot-pressing plate 4 from being pressed down too fast, and in order to uniformly heat the hot-pressing plate, the electric heating wires 25 are uniformly paved in the hot-pressing plate, so that the combination of decorative layers and base layers at different positions on the composite floor is facilitated, the effect of hot-pressing combination is also improved, meanwhile, the second electric sheet 22 is contacted with the second electrode 21, the electric heating wires 25 can rapidly generate heat, and when the second electric sheet 22 is separated from the second electrode 21, the electric heating wires are not heated any more, the hot-pressing plate is not preheated in advance, the effect of environmental protection and energy conservation is achieved, and the buffer block 32 is fixedly arranged at one end of the cooling cavity 26; in operation, the pushing cylinder 20 can be prevented from being pushed too much, so that the composite floor is pushed out of the cooling cavity 26.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (6)
1. A composite floor hot press, characterized in that: including workstation (2), the bottom side fixedly connected with supporting leg (1) of workstation (2), install hot pressing board (3) down on workstation (2), three guide post (6) are all installed at the both sides edge of workstation (2), have seted up the guiding hole on crossbeam (5) and fly leaf (16), guide post (6) run through the guiding hole that sets up on crossbeam (5) and fly leaf (16) respectively for crossbeam (5) and fly leaf (16) sliding fit are on guide post (6), the top side of workstation (2) is fixed with hot pressing board (3) down, upper hot pressing board (4) are installed to the bottom side of crossbeam (5), and the top slip of catch bar (9) runs through in crossbeam (5), the top of catch bar (9) is fixed with first electricity piece (10), the rigid coupling has first spring (11) between fly leaf and the crossbeam, and first spring (11) suit is on the top side of pole (5) is fixed with hot pressing board (3), the top of catch bar (9) is fixed with on the fixed ring (15) on the fixed ring (12) on the fixed ring (15), the locking screw (14) is installed in the cooperation rotation on spacing ring (15), and wherein the top of two guide posts (6) that are located intermediate position is fixed with backup pad (17), pneumatic cylinder (18) are equipped with to the top side of backup pad (17), the action end cooperation of pneumatic cylinder (18) is equipped with down weight (23), and pushes down weight (23) and be located the top side of fly leaf (16).
2. The composite floor heating press of claim 1, wherein: the utility model discloses a cooling device for the air conditioner, including work bench (2), supporter (19) are installed to one end of work bench (2), be fixed with propelling movement cylinder (20) on supporter (19), the other end of work bench (2) is fixed with cooling chamber (26), cooling chamber (26) inside is fixed with fan (29), surface mounting in cooling chamber (26) has water tank (27), water tank (27) are connected with the output cooperation of water pump (28).
3. The composite floor heating press of claim 1, wherein: the top side of crossbeam (5) is fixed with spliced pole (7), and the top activity of spliced pole (7) runs through fly leaf (16) setting, the top rotation of fly leaf (16) is equipped with baffle (24), the bottom cover of spliced pole (7) is equipped with second spring (31), and second spring (31) are located between crossbeam (5) and fly leaf (16).
4. The composite floor heating press of claim 1, wherein: the upper hot pressing plate (4) and the lower hot pressing plate (3) are respectively provided with a plurality of electric heating wires (25), one side of the lower hot pressing plate (3) is provided with a second electric sheet (22), and one side of the upper hot pressing plate (4) is provided with a second electrode (21).
5. The composite floor heating press of claim 4, wherein: the adjusting rod (12) is arranged in parallel with the pushing rod (9), the first electric sheet (10), the first electrode (13), the hydraulic cylinder (18) and the power supply are connected into a series circuit, and the relation between the first electric sheet (10) and the first electrode (13) is similar to a switch.
6. The composite floor heating press of claim 4, wherein: the electric heating wire (25), the second electrode (21) and the second electric sheet (22) are integrally connected into a series circuit, and the second electrode (21) and the second electric sheet (22) are vertically arranged.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202320559864.1U CN219467231U (en) | 2023-03-17 | 2023-03-17 | Composite floor hot press |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202320559864.1U CN219467231U (en) | 2023-03-17 | 2023-03-17 | Composite floor hot press |
Publications (1)
Publication Number | Publication Date |
---|---|
CN219467231U true CN219467231U (en) | 2023-08-04 |
Family
ID=87441421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202320559864.1U Active CN219467231U (en) | 2023-03-17 | 2023-03-17 | Composite floor hot press |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN219467231U (en) |
-
2023
- 2023-03-17 CN CN202320559864.1U patent/CN219467231U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN204123492U (en) | The cold press that a kind of sheet material position is adjustable | |
CN209699354U (en) | A kind of plate multi-daylight press | |
CN112405731A (en) | Plate gluing and pressing device for furniture processing | |
CN107718527A (en) | A kind of PVC board embossing mechanical device | |
CN219467231U (en) | Composite floor hot press | |
CN108127764B (en) | Plate punching machine | |
CN107351198B (en) | Composite board laminating hot press | |
CN213739154U (en) | Glass hot pressing shaping equipment | |
CN2928434Y (en) | Cold press adhesive machine | |
CN108232316A (en) | A kind of cold and hot press mechanism of battery core | |
CN207481433U (en) | For the gold stamping structure of gilding press | |
CN114393654B (en) | Multi-station integrated multi-layer cold-hot pressing machine | |
CN215395770U (en) | High-efficient bonding compression fittings of reorganization bamboo panel | |
CN220005671U (en) | Hot-pressing bulge removing equipment | |
CN220052152U (en) | Firm slab forming device bonds | |
CN112298999A (en) | Various steel sheet apparatus for producing in intermediate layer | |
CN219404640U (en) | Hot press capable of simultaneously processing multi-layer boards | |
CN221493936U (en) | Rivet-free riveting mechanism for condenser guard plate | |
CN213054614U (en) | Pressfitting machine of racket processing usefulness | |
CN220904176U (en) | Heating and pressurizing device for maintaining wind power blade | |
CN220260825U (en) | Radiator core assembly fixture | |
CN214056891U (en) | Artificial decorative stone line pattern thermoprint device | |
CN220841555U (en) | High temperature resistant effectual briquetting machine | |
CN220681594U (en) | Uniform heating softening device | |
CN219599829U (en) | Pressing plate machine capable of rapidly cooling |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |