CN212472346U - Multilayer blow molding device - Google Patents
Multilayer blow molding device Download PDFInfo
- Publication number
- CN212472346U CN212472346U CN202021061378.XU CN202021061378U CN212472346U CN 212472346 U CN212472346 U CN 212472346U CN 202021061378 U CN202021061378 U CN 202021061378U CN 212472346 U CN212472346 U CN 212472346U
- Authority
- CN
- China
- Prior art keywords
- blow molding
- rod
- fixed
- sealing
- spring
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a multilayer blow molding device, including defeated material shell, blow mold and support, first motor is installed in the left side of defeated material shell, the right side of chain is provided with the hob, the place ahead of defeated material shell is fixed with the mouth of moulding plastics, the inside of mouth of moulding plastics is fixed with the mouth of blowing, blow mold is located the left side of sealing the mechanism, both sides are provided with splint around the blow mold. The utility model has the advantages that: this multilayer blow molding device, connector department weeping when preventing through sealing mechanism that equipment from moulding plastics, equipment department's mouth of moulding plastics continuously leaks into and causes the waste when preventing equipment change mould through sealing mechanism, make equipment can continuous change mould through the second motor, thereby make equipment can multilayer work, the mould that can the fixed multiple specification of centre gripping through the two-way threaded rod also can make the feed inlet of mould be in same position simultaneously, can prevent the angle change of equipment through the second guide arm, influence the butt joint of equipment.
Description
Technical Field
The utility model relates to a blow molding device technical field specifically is a multilayer blow molding device.
Background
Blow molding, which is a method of forming a hollow article by blowing a hot-melt parison closed in a mold by means of gas pressure, is the third most common plastic processing method, and is also a plastic molding method that is developed rapidly, in which the mold for blow molding has only a female mold (cavity), and compared with injection molding, the equipment cost is low, the adaptability is strong, the moldability is good (e.g., low stress), and an article with a complex relief curve (shape) can be molded.
The junction can lead to the equipment weeping because of not inseparable enough of butt joint when the blow molding of current blow molding device, thereby the department of moulding plastics can last the weeping and cause the waste when current blow molding device mould withdraws from to change, current blow molding device only has a mould and processes, thereby the work efficiency who leads to equipment is low, current blow molding device can only be fixed to the mould of minizone size, influence the suitability of equipment, current blow molding device can lead to the equipment skew when lift adjustment center, thereby make the unable butt joint of equipment, lead to the problem of the effect of equipment blowing easily.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multilayer blow molding device, thereby can lead to the equipment weeping because of not inseparable enough of butt joint in the junction when the blowing with the current blow molding device that proposes among the above-mentioned background of solution, thereby current blow molding device mould withdraws from injection molding mouth department can last weeping and cause the waste when changing, current blow molding device only has a mould to process, thereby the work efficiency who leads to equipment is low, current blow molding device can only fix the mould of minim size, influence the suitability of equipment, current blow molding device can lead to the unable alignment of central point when changing not equidimension mould, lead to the problem of the effect of equipment blowing easily.
In order to achieve the above object, the utility model provides a following technical scheme: a multilayer blow molding device comprises a material conveying shell, a blow molding die and a support, wherein a first motor is installed on the left side of the material conveying shell, a chain is connected to the rear of the first motor, a screw rod is arranged on the right side of the chain, a rotating wheel is arranged outside the screw rod, an injection molding opening is fixed in front of the material conveying shell, a sealing mechanism is arranged on the left side of the injection molding opening, an air blowing opening is fixed inside the injection molding opening, sealing mechanisms are arranged on the front side and the rear side of the left end of the injection molding opening, the blow molding die is located on the left side of the sealing mechanism, a supporting plate is arranged below the blow molding die, clamping plates are arranged on the front side and the rear side of the blow molding die, a baffle is fixed on one side, close to the central axis of the supporting plate, a supporting rotating rod is fixed below the supporting rotating plate, two-way threaded rods are arranged on the periphery, and the right side of second motor is provided with the screw, the below of second motor is connected with the dead lever, and the outside of dead lever is provided with the shaft, the support is located the below of shaft, and the below of support is fixed with the connecting plate, first cylinder is installed to the below of connecting plate, and is fixed with the second guide arm around the first cylinder, the below of second guide arm is provided with mounting plate, and mounting plate's below is fixed with the fixed block, the internally mounted of fixed block has the slide bar, and the right side of fixed block is provided with the fixed connection piece, the second cylinder is installed to the below of slide bar, and the below of second cylinder is provided with PMKD.
Preferably, a rotating structure is formed between the screw rod and the rotating wheel, and the screw rod is connected with the first motor through a chain.
Preferably, the sealing mechanism includes a sealing ring, a first spring and an accommodating groove, the first spring is arranged on the right side of the sealing ring, and the accommodating groove is arranged outside the first spring.
Preferably, a telescopic structure is formed between the sealing ring and the injection molding opening, and an elastic structure is formed between the first spring and the sealing ring.
Preferably, the sealing mechanism comprises a sealing block, a second spring and a first guide rod, the second spring is installed on the right side of the sealing block, and the first guide rod is fixed inside the second spring.
Preferably, a telescopic structure is formed between the sealing block and the injection molding port, an elastic structure is formed between the second spring and the sealing block, and a movable structure is formed between the first guide rod and the sealing block.
Preferably, be threaded connection between two-way threaded rod and the splint, and two sides of two-way threaded rod use the axis as the border are two kinds of screw threads of positive and negative respectively.
Preferably, a rotating structure is formed between the fixing rod and the wheel shaft, and the fixing rod and the bracket are welded.
Preferably, a sliding structure is formed between the second guide rod and the connecting plate, and the second guide rod and the mounting bottom plate are welded.
Preferably, a sliding structure is formed among the sliding rod, the fixed block and the fixed connecting block, and the sliding rod is fixedly connected with the fixed bottom plate.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a flexible construction that constitutes between sealing ring and the mouth of moulding plastics is convenient for mould plastics mouthful and blow mold docks, constitutes elastic construction between sealing ring and the first spring, makes sealing ring and the mouth in close contact with of moulding plastics through elastic construction to prevent to mould plastics mouthful and blow mold's junction weeping.
The utility model discloses a seal the piece and the flexible construction that constitutes between the mouth of moulding plastics can control the switch of the mouth of moulding plastics to the mouth of moulding plastics lasts the weeping when can preventing that blow mold from breaking away from, the first guide arm with seal the movable structure that constitutes between the piece and fix a position the piece of sealing, the second spring with seal the elastic construction that constitutes between the piece and make and seal the piece and in time seal the mouth of moulding plastics.
3. The utility model discloses a constitute threaded connection between baffle and the two-way threaded rod and carry out the centre gripping to blow mold fixed to the blow mold that makes equipment can multiple specification is fixed, also enables simultaneously in staff quick assembly disassembly blow mold messenger equipment can continuous work.
4. The utility model discloses a revolution mechanic who constitutes between shaft and the dead lever drives the backup pad rotation to make equipment can carry out multilayer work in turn, thereby guarantee that equipment can last the work that does not stop.
5. The utility model discloses a sliding construction who constitutes between slide bar and fixed block and the fixed connection piece makes the second cylinder drive the backup pad and controls and rock to be convenient for blow mold and the butt joint and the separation of the mouth of moulding plastics, constitute sliding construction between second guide arm and the connecting plate, fix a position the connecting plate through sliding construction, the skew appears when preventing that first cylinder from driving the backup pad and going up and down, leads to equipment can not accurate butt joint.
Drawings
FIG. 1 is a schematic diagram of a multi-layer blow molding apparatus according to the present invention;
FIG. 2 is a schematic top view of the multi-layer blow molding apparatus of the present invention;
FIG. 3 is an enlarged schematic view of the position A in FIG. 2 of the multi-layer blow molding apparatus according to the present invention;
FIG. 4 is an enlarged structural view of the inside of a supporting rotating rod of the multi-layer blow molding device of the present invention;
fig. 5 is a schematic view of an external overlooking structure of a feeding housing of a multi-layer blow molding device according to the present invention.
In the figure: 1. a material conveying shell; 2. a first motor; 3. a chain; 4. a screw rod; 5. a rotating wheel; 6. an injection molding port; 7. a sealing mechanism; 701. a seal ring; 702. a first spring; 703. an accommodating groove; 8. an air blowing port; 9. a sealing mechanism; 901. a sealing block; 902. a second spring; 903. a first guide bar; 10. a blow mold; 11. a support plate; 12. a splint; 13. a baffle plate; 14. supporting the rotating rod; 15. a bidirectional threaded rod; 16. a second motor; 17. a screw; 18. fixing the rod; 19. a wheel axle; 20. a support; 21. a connecting plate; 22. a first cylinder; 23. a second guide bar; 24. mounting a bottom plate; 25. a fixed block; 26. a slide bar; 27. fixing a connecting block; 28. a second cylinder; 29. and fixing the bottom plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a multilayer blow molding device, including defeated material shell 1, blow mold 10 and support 20, first motor 2 is installed in the left side of defeated material shell 1, and the rear of first motor 2 is connected with chain 3, the right side of chain 3 is provided with hob 4, and the outside of hob 4 is provided with runner 5, constitute revolution mechanic between hob 4 and the runner 5, and hob 4 is connected with first motor 2 through chain 3, the place ahead of defeated material shell 1 is fixed with mouthful 6 of moulding plastics, and the left side of mouthful 6 of moulding plastics is provided with sealing mechanism 7, sealing mechanism 7 includes sealing ring 701, first spring 702 and accepting groove 703, and the right side of sealing ring 701 is provided with first spring 702, the outside of first spring 702 is provided with the accepting groove, constitute extending structure between sealing ring 703 and the mouth 6 of moulding plastics, and constitute elastic construction between first spring 702 and the sealing ring, it is convenient for mouth 6 of moulding plastics and blow mold 10 to carry out through the extending structure that constitutes between sealing ring and the mouth 6 of moulding plastics In butt joint, an elastic structure is formed between the sealing ring 701 and the first spring 702, and the sealing ring 701 is tightly contacted with the injection port 6 through the elastic structure, so that liquid leakage at the joint of the injection port 6 and the blow mold 10 is prevented;
an air blowing port 8 is fixed in the injection molding port 6, sealing mechanisms 9 are arranged on the front side and the rear side of the left end of the injection molding port 6, each sealing mechanism 9 comprises a sealing block 901, a second spring 902 and a first guide rod 903, a second spring 902 is arranged on the right side of the sealing block 901, a first guide rod 903 is fixed inside the second spring 902, a telescopic structure is formed between the sealing block 901 and the injection molding opening 6, an elastic structure is formed between the second spring 902 and the sealing block 901, and a movable structure is formed between the first guide rod 903 and the sealing block 901, the opening and closing of the injection port 6 can be controlled through a telescopic structure formed between the sealing block 901 and the injection port 6, therefore, continuous liquid leakage of the injection port 6 can be prevented when the blow mold 10 is separated, the seal block 901 is positioned by a movable structure formed between the first guide rod 903 and the seal block 901, and the seal block 901 can timely seal the injection port 6 by an elastic structure formed between the second spring 902 and the seal block 901;
the blow molding die 10 is positioned on the left side of the sealing mechanism 9, a supporting plate 11 is arranged below the blow molding die 10, clamping plates 12 are arranged on the front side and the rear side of the blow molding die 10, a baffle 13 is fixed on one side of the blow molding die 10 close to the central axis of the supporting plate 11, a supporting rotating rod 14 is fixed below the supporting plate 11, two-way threaded rods 15 are arranged around the supporting rotating rod 14, the two-way threaded rods 15 are in threaded connection with the clamping plates 12, two sides of the two-way threaded rods 15 with the central axis as a boundary are respectively provided with two threads which are positive and negative, and the blow molding die 10 is clamped and fixed through the threaded connection formed between the baffle 13 and the two-way threaded rods 15, so that the blow molding die 10 with various specifications can be fixed, and meanwhile, a worker can quickly disassemble;
a second motor 16 is arranged in the supporting rotating rod 14, a screw 17 is arranged on the right side of the second motor 16, a fixing rod 18 is connected below the second motor 16, a wheel shaft 19 is arranged outside the fixing rod 18, a rotating structure is formed between the fixing rod 18 and the wheel shaft 19, the fixing rod 18 and the bracket 20 are welded, and the supporting plate 11 is driven to rotate through the rotating structure formed between the wheel shaft 19 and the fixing rod 18, so that the equipment can perform multilayer alternate work, and the equipment can continuously work;
the support 20 is positioned below the wheel shaft 19, a connecting plate 21 is fixed below the support 20, a first air cylinder 22 is installed below the connecting plate 21, a second guide rod 23 is fixed on the periphery of the first air cylinder 22, a sliding structure is formed between the second guide rod 23 and the connecting plate 21, the second guide rod 23 and the mounting base plate 24 are welded, a mounting base plate 24 is arranged below the second guide rod 23, a fixing block 25 is fixed below the mounting base plate 24, a sliding rod 26 is installed inside the fixing block 25, a fixing connecting block 27 is arranged on the right side of the fixing block 25, a second air cylinder 28 is installed below the sliding rod 26, a fixing base plate 29 is arranged below the second air cylinder 28, a sliding structure is formed between the sliding rod 26, the fixing block 25 and the fixing connecting block 27, the sliding rod 26 is fixedly connected with the fixing base plate 29, the second air cylinder 28 drives the support plate 11 to swing left and right through the sliding structure formed between the sliding rod 26, the fixing block 25 and the fixing connecting block 27, thereby be convenient for blow mold 10 with the butt joint and the separation of mouthful 6 of moulding plastics, constitute sliding construction between second guide arm 23 and the connecting plate 21, fix a position connecting plate 21 through sliding construction, the skew appears when preventing that first cylinder 22 from driving backup pad 11 and going up and down, leads to equipment can not accurate butt joint.
In summary, in the multi-layer blow molding device, when in use, the blow mold 10 is clamped and fixed through the threaded connection between the two-way threaded rod 15 and the clamping plate 12, the rear end of the blow mold 10 is in contact with the baffle 13 when the blow mold 10 is installed, then the first cylinder 22 is opened to adjust the position of the supporting plate 11, so that the horizontal central axis of the blow mold 10 coincides with the horizontal central axis of the injection port 6, the connecting plate 21 is positioned through the sliding structure formed between the second guide rod 23 and the connecting plate 21 to prevent the supporting plate 11 from inclining, the second cylinder 28 is opened to butt the blow mold 10 with the injection port 6 through the fixed connecting block 27 and the sliding structure formed between the fixed block 25 and the sliding rod 26, then the elastic structure formed between the first spring 702 and the sealing ring 701 and the telescopic structure formed between the sealing ring 701 and the accommodating groove 703 to prevent the leakage at the connection between the injection, the first motor 2 is opened, the screw rod 4 which forms a rotating structure with the rotating wheel 5 is driven by the chain 3 to rotate, so that plastic particles are easily pushed into the injection port 6 for injection molding, the blow molding is carried out through the blowing port 8, then the blow molding mold 10 is separated from the injection port 6 through the second air cylinder 28, meanwhile, the injection port 6 is sealed to prevent liquid leakage through the telescopic structure which forms between the sealing block 901 and the injection port 6 and the elastic structure which forms between the sealing block 901 and the second spring 902, then the second motor 16 is opened, the blow molding mold 10 is replaced through the rotating structure which forms between the fixing rod 18 and the wheel shaft 19, and therefore the equipment can work uninterruptedly.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a multilayer blow molding device, includes defeated material shell (1), blow mold (10) and support (20), its characterized in that: the automatic conveying device is characterized in that a first motor (2) is installed on the left side of a conveying shell (1), a chain (3) is connected to the rear of the first motor (2), a screw rod (4) is arranged on the right side of the chain (3), a rotating wheel (5) is arranged outside the screw rod (4), an injection molding opening (6) is fixed in front of the conveying shell (1), a sealing mechanism (7) is arranged on the left side of the injection molding opening (6), an air blowing opening (8) is fixed inside the injection molding opening (6), sealing mechanisms (9) are arranged on the front side and the rear side of the left end of the injection molding opening (6), a blow molding die (10) is located on the left side of the sealing mechanisms (9), a supporting plate (11) is arranged below the blow molding die (10), clamping plates (12) are arranged on the front side and the rear side of the blow molding die (10) and a baffle (13) is fixed on one side of the blow, a supporting rotating rod (14) is fixed below the supporting plate (11), two-way threaded rods (15) are arranged on the periphery of the supporting rotating rod (14), a second motor (16) is installed inside the supporting rotating rod (14), a screw (17) is arranged on the right side of the second motor (16), a fixing rod (18) is connected below the second motor (16), a wheel shaft (19) is arranged outside the fixing rod (18), the support (20) is located below the wheel shaft (19), a connecting plate (21) is fixed below the support (20), a first air cylinder (22) is installed below the connecting plate (21), a second guide rod (23) is fixed on the periphery of the first air cylinder (22), a mounting bottom plate (24) is arranged below the second guide rod (23), a fixing block (25) is fixed below the mounting bottom plate (24), a sliding rod (26) is installed inside the fixing block (25), and the right side of fixed block (25) is provided with fixed connection piece (27), second cylinder (28) is installed to the below of slide bar (26), and the below of second cylinder (28) is provided with PMKD (29).
2. A multi-layer blow molding apparatus according to claim 1, wherein: a rotating structure is formed between the screw rod (4) and the rotating wheel (5), and the screw rod (4) is connected with the first motor (2) through the chain (3).
3. A multi-layer blow molding apparatus according to claim 1, wherein: the sealing mechanism (7) comprises a sealing ring (701), a first spring (702) and an accommodating groove (703), the first spring (702) is arranged on the right side of the sealing ring (701), and the accommodating groove (703) is arranged outside the first spring (702).
4. A multi-layer blow molding apparatus according to claim 3, wherein: a telescopic structure is formed between the sealing ring (701) and the injection molding opening (6), and an elastic structure is formed between the first spring (702) and the sealing ring (701).
5. A multi-layer blow molding apparatus according to claim 1, wherein: the sealing mechanism (9) comprises a sealing block (901), a second spring (902) and a first guide rod (903), the second spring (902) is installed on the right side of the sealing block (901), and the first guide rod (903) is fixed inside the second spring (902).
6. A multi-layer blow molding apparatus according to claim 5, wherein: an expansion structure is formed between the sealing block (901) and the injection molding port (6), an elastic structure is formed between the second spring (902) and the sealing block (901), and a movable structure is formed between the first guide rod (903) and the sealing block (901).
7. A multi-layer blow molding apparatus according to claim 1, wherein: the bidirectional threaded rod (15) is in threaded connection with the clamping plate (12), and the two sides of the bidirectional threaded rod (15) are respectively provided with two types of positive and negative threads by taking the central axis as a boundary.
8. A multi-layer blow molding apparatus according to claim 1, wherein: a rotating structure is formed between the fixing rod (18) and the wheel shaft (19), and the fixing rod (18) and the bracket (20) are welded.
9. A multi-layer blow molding apparatus according to claim 1, wherein: a sliding structure is formed between the second guide rod (23) and the connecting plate (21), and the second guide rod (23) and the mounting bottom plate (24) are welded.
10. A multi-layer blow molding apparatus according to claim 1, wherein: a sliding structure is formed among the sliding rod (26), the fixing block (25) and the fixed connecting block (27), and the sliding rod (26) is fixedly connected with the fixed bottom plate (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021061378.XU CN212472346U (en) | 2020-06-10 | 2020-06-10 | Multilayer blow molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021061378.XU CN212472346U (en) | 2020-06-10 | 2020-06-10 | Multilayer blow molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212472346U true CN212472346U (en) | 2021-02-05 |
Family
ID=74416480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021061378.XU Expired - Fee Related CN212472346U (en) | 2020-06-10 | 2020-06-10 | Multilayer blow molding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212472346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111688161A (en) * | 2020-06-10 | 2020-09-22 | 杭州富阳鑫腾塑料制品有限公司 | Multilayer blow molding device |
-
2020
- 2020-06-10 CN CN202021061378.XU patent/CN212472346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111688161A (en) * | 2020-06-10 | 2020-09-22 | 杭州富阳鑫腾塑料制品有限公司 | Multilayer blow molding device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212472346U (en) | Multilayer blow molding device | |
| CN217531643U (en) | Positioning and calibrating device for mounting injection molding machine die | |
| CN208812498U (en) | A kind of quick-installed plastic extruder support device | |
| CN208759739U (en) | Plastic bottle head punches integration apparatus | |
| CN212764701U (en) | Multi-layer extrusion mold opening and closing device of blow molding machine | |
| CN206598522U (en) | A kind of plastic ware blow molding apparatus | |
| CN111688161A (en) | Multilayer blow molding device | |
| CN216360249U (en) | A extracting device for OCR optical cement | |
| CN208133453U (en) | A kind of vertical bakelite molding machine | |
| CN214395145U (en) | Novel plastic feeding machine | |
| CN212124147U (en) | Mould locking structure of plastic injection blow molding machine | |
| CN213137622U (en) | Shaping die for splash-proof mask | |
| CN213704402U (en) | Mechanical arm for automatic feeding device of injection molding machine | |
| JP3748501B2 (en) | Rotary injection molding machine | |
| CN215362193U (en) | Hose inversion early warning device for hose tail sealing machine | |
| CN219581415U (en) | Battery case shaping device | |
| CN220515987U (en) | Screw equipment on casing support | |
| CN112207235A (en) | Industrial casting mold for robot arm and using method thereof | |
| CN213860364U (en) | Injection molding robot | |
| CN218019841U (en) | Injection molding mould of license plate of embedded chip | |
| CN212312591U (en) | Injection mold for plastic suction cover of toothbrush | |
| CN220351980U (en) | Multi-unit forming die | |
| CN219667336U (en) | Electronic product drain pan injection mold | |
| CN218371729U (en) | Glue pouring mechanism for manufacturing heat-conducting gel | |
| CN217169438U (en) | Novel PET bottle forming device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210205 |