CN220031041U - Injection molding die for thick-wall deep-cavity food sealing storage barrel - Google Patents
Injection molding die for thick-wall deep-cavity food sealing storage barrel Download PDFInfo
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- CN220031041U CN220031041U CN202321050951.0U CN202321050951U CN220031041U CN 220031041 U CN220031041 U CN 220031041U CN 202321050951 U CN202321050951 U CN 202321050951U CN 220031041 U CN220031041 U CN 220031041U
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 58
- 238000007789 sealing Methods 0.000 title claims abstract description 54
- 238000000465 moulding Methods 0.000 claims abstract description 117
- 238000007493 shaping process Methods 0.000 claims description 46
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000012768 molten material Substances 0.000 abstract description 5
- 210000001503 joint Anatomy 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 description 12
- 239000004033 plastic Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model belongs to the technical field of molds, and particularly relates to an injection molding mold for a thick-wall deep-cavity food sealing storage barrel. The utility model comprises a sealing storage barrel forming upper die and a sealing storage barrel forming lower die, wherein the sealing storage barrel forming lower die is provided with a storage barrel thick-wall deep cavity forming convex part. In the injection molding process, the upper molding die of the sealed storage barrel and the lower molding die of the sealed storage barrel are mutually close, so that the thick-wall deep cavity molding convex part of the storage barrel and the thick-wall deep cavity molding concave part of the storage barrel are in butt joint and matched to form a complete cavity, molten materials are injected through the injection molding part, and the clamping groove structures of the sealed storage barrel are synchronously molded through the clamping groove molding assembly of the storage barrel, so that a circle of the clamping groove structures of the sealed storage barrel are synchronously molded during injection molding, secondary processing is not needed, the production cost and the labor cost are greatly reduced, and the molding precision of the clamping groove structures is high.
Description
Technical Field
The utility model belongs to the technical field of molds, and relates to an injection molding mold for a thick-wall deep-cavity food sealing storage barrel.
Background
The sealed storage barrel of thick wall deep cavity food is used for placing food, stores food, adopts plastic material, and weight is lighter, adopts injection mold to carry out the production of moulding plastics generally. The thick-wall deep-cavity food sealing storage barrel is required to be matched with the sealing cover to seal, and the clamping groove structure is required to be adopted to carry out clamping, fixing and sealing. In the injection molding process of the conventional thick-wall deep-cavity food sealing storage barrel mold, the buckling groove structure of the conventional thick-wall deep-cavity food sealing storage barrel mold needs to be subjected to secondary processing after injection molding is completed, so that the production cost and the labor cost are high, and the molding precision of the buckling groove structure is relatively general.
In order to overcome the defects in the prior art, people have continuously explored and put forward various solutions, for example, chinese patent discloses a sealed package barrel cover production mold [ application number: 201720378044.7 it includes first mould subassembly and second mould subassembly, first die shank, first cope match-plate pattern, first lower mould and first die holder that first mould subassembly from top to bottom set gradually, be connected with first upper die fixed plate in the first cope match-plate pattern, be equipped with the drift in the first upper die fixed plate; the second die assembly is provided with a second die handle, a second upper die plate, a lower die fixing plate and a second lower die holder from top to bottom in sequence, the second upper die plate is connected with the second die handle through the second upper die fixing plate, and a second lower die matched with the second upper die plate is arranged at a corresponding position of the lower die fixing plate. The first upper die plate is positioned below the punch and is internally provided with a material returning plate. But this scheme is not applicable to the sealed storage bucket plastic part of shaping thick wall deep cavity food, and in the injection molding process, its buckle groove structure still need carry out secondary operation after the completion of moulding plastics, has manufacturing cost and cost of labor higher, and the shaping precision of buckle groove structure is more general defect.
Disclosure of Invention
The utility model aims to solve the problems and provides an injection molding die for a thick-wall deep-cavity food sealing storage barrel.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a sealed storage bucket injection moulding mould of dark chamber food of thick wall, includes sealed storage bucket shaping upper die and sealed storage bucket shaping lower die, sealed storage bucket shaping lower die on be equipped with the dark chamber shaping convex part of storage bucket thick wall, sealed storage bucket shaping upper die on be equipped with the dark chamber shaping concave part of storage bucket thick wall, the dark chamber shaping convex part of storage bucket thick wall correspond and the shape matches and fit with the position of the dark chamber shaping concave part of storage bucket thick wall, sealed storage bucket shaping upper die in still be equipped with storage bucket buckle groove shaping subassembly, storage bucket buckle groove shaping subassembly correspond with the position of the dark chamber shaping convex part of storage bucket thick wall, sealed storage bucket shaping upper die top be equipped with injection molding portion.
In the injection molding mold for the thick-wall deep-cavity food sealing storage barrel, the storage barrel buckling groove molding assembly comprises a plurality of in-mold clamping seats arranged in an upper mold for molding the sealing storage barrel, wherein the in-mold clamping seats are distributed in a rectangular array along the center point of the upper mold for molding the sealing storage barrel, and buckling groove molding parts are arranged at one ends, close to the thick-wall deep-cavity molding convex parts of the storage barrel, of the in-mold clamping seats.
In the injection molding mold for the thick-wall deep-cavity food sealing storage barrel, the buckling groove molding part comprises a plurality of connecting plates arranged at one end of the in-mold clamping seat close to the thick-wall deep-cavity molding convex part of the storage barrel, one end of the connecting plates, far away from the in-mold clamping seat, is provided with buckling groove molding convex blocks, and the buckling groove molding convex blocks correspond to the positions of the thick-wall deep-cavity molding convex part of the storage barrel.
In the injection molding mold of the thick-wall deep-cavity food sealing storage barrel, a plurality of connecting plate positioning grooves are formed in the lower molding mold of the sealing storage barrel, and the connecting plates are matched with the connecting plate positioning grooves in a clamping manner.
In the injection molding mold of the thick-wall deep-cavity food sealing storage barrel, a plurality of clamping seat positioning grooves are further formed in the lower molding mold of the sealing storage barrel, and the clamping seats in the mold are matched with the clamping seat positioning grooves in a clamping manner.
In the injection molding mold of the thick-wall deep-cavity food sealing storage barrel, a clamping seat connecting piece is arranged in the upper mold for molding the sealing storage barrel, and the clamping seat connecting piece is connected with the clamping seat in the mold.
In the injection molding mold of the thick-wall deep-cavity food sealing storage barrel, the clamping seat connecting piece comprises a plurality of clamping seat connecting sliding blocks arranged in an upper mold for molding the sealing storage barrel, and the clamping seat connecting sliding blocks are connected with the clamping seats in the mold.
In the injection molding mold of the thick-wall deep-cavity food sealing storage barrel, a plurality of connecting sliding rods are arranged in the clamping seat connecting sliding blocks, and the connecting sliding rods penetrate through the clamping seat connecting sliding blocks and are connected with the clamping seat in the mold.
In the injection molding mold for the thick-wall deep-cavity food sealing storage barrel, the storage barrel thick-wall deep-cavity molding convex part comprises a storage barrel thick-wall deep-cavity molding convex seat arranged on the sealing storage barrel molding lower mold, the storage barrel thick-wall deep-cavity molding concave part comprises a storage barrel thick-wall deep-cavity molding concave cavity arranged in the sealing storage barrel molding upper mold, and the storage barrel thick-wall deep-cavity molding convex seat and the storage barrel thick-wall deep-cavity molding concave cavity are corresponding in position and matched in shape.
In the injection molding mold for the thick-wall deep-cavity food sealing storage barrel, the injection molding part comprises an injection molding main board arranged above the upper molding mold for sealing storage barrel.
Compared with the prior art, the utility model has the advantages that:
in the injection molding process, the upper molding die of the sealed storage barrel and the lower molding die of the sealed storage barrel are mutually close, so that the thick-wall deep cavity molding convex part of the storage barrel and the thick-wall deep cavity molding concave part of the storage barrel are in butt joint and matched to form a complete cavity, molten materials are injected through the injection molding part, and the clamping groove structures of the sealed storage barrel are synchronously molded through the clamping groove molding assembly of the storage barrel, so that a circle of the clamping groove structures of the sealed storage barrel are synchronously molded during injection molding, secondary processing is not needed, the production cost and the labor cost are greatly reduced, and the molding precision of the clamping groove structures is high.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a partial structural schematic of the present utility model.
Fig. 3 is a schematic view of a partial structure of another aspect of the present utility model.
Fig. 4 is a schematic structural view of the storage tub snap groove forming assembly.
In the figure: the sealing storage barrel molding upper die 1, the sealing storage barrel molding lower die 2, the storage barrel thick-wall deep cavity molding convex part 3, the storage barrel thick-wall deep cavity molding concave part 4, the storage barrel clamping groove molding assembly 5, the injection molding part 6, the in-die clamping seat 7, the clamping groove molding part 8, the connecting plate 9, the clamping groove molding convex block 10, the connecting plate positioning groove 11, the clamping seat positioning groove 12, the clamping seat connecting piece 13, the clamping seat connecting sliding block 14, the connecting sliding rod 15, the storage barrel thick-wall deep cavity molding convex seat 16, the storage barrel thick-wall deep cavity molding concave cavity 17 and the injection molding main board 18.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in figures 1-4, an injection molding mold for a thick-wall deep-cavity food seal storage barrel comprises an upper seal storage barrel molding mold 1 and a lower seal storage barrel molding mold 2, wherein a storage barrel thick-wall deep-cavity molding convex part 3 is arranged on the lower seal storage barrel molding mold 2, a storage barrel thick-wall deep-cavity molding concave part 4 is arranged in the upper seal storage barrel molding mold 1, the position of the storage barrel thick-wall deep-cavity molding convex part 3 corresponds to the position of the storage barrel thick-wall deep-cavity molding concave part 4, the shape of the storage barrel thick-wall deep-cavity molding convex part is matched with the shape of the storage barrel thick-wall deep-cavity molding concave part 4, a storage barrel buckling groove molding assembly 5 is further arranged in the upper seal storage barrel molding mold 1, the storage barrel buckling groove molding assembly 5 corresponds to the position of the storage barrel thick-wall deep-cavity molding convex part 3, and an injection molding part 6 is arranged above the upper seal storage barrel molding mold 1.
In this embodiment, in the injection molding process, with sealed storage barrel shaping upper die 1 and sealed storage barrel shaping lower die 2 be close to each other for storage barrel thick wall deep cavity shaping convex part 3 and the deep cavity shaping concave part 4 looks butt cooperation of storage barrel thick wall form complete die cavity, and the molten material is injected through injection molding part 6, is used for the buckle groove structure of synchronous shaping sealed storage barrel through storage barrel buckle groove shaping subassembly 5, makes the round a plurality of buckle groove structures of sealed storage barrel synchronous shaping when moulding plastics, need not to carry out secondary operation, greatly reduced manufacturing cost and cost of labor, buckle groove structure shaping precision is high.
Referring to fig. 1-4, the storage barrel buckling groove forming assembly 5 comprises a plurality of in-mold clamping seats 7 arranged in an upper sealing storage barrel forming mold 1, the in-mold clamping seats 7 are distributed in a rectangular array along the center point of the upper sealing storage barrel forming mold 1, and buckling groove forming parts 8 are arranged at one end, close to a thick wall deep cavity forming convex part 3 of the storage barrel, of the in-mold clamping seats 7.
Specifically speaking, in-mold clamping seat 7 is used for fixing buckle groove shaping portion 8, in the process of moulding plastics, is used for the buckle groove structure of the sealed storage bucket of synchronous shaping through buckle groove shaping portion 8 for the round of a plurality of buckle groove structures of sealed storage bucket need not to carry out secondary operation when moulding plastics, greatly reduced manufacturing cost and cost of labor, buckle groove structure shaping precision is high.
The buckle groove forming part 8 comprises a plurality of connecting plates 9 arranged at one end of the in-mold clamping seat 7 close to the storage barrel thick-wall deep cavity forming convex part 3, one end of the connecting plates 9 away from the in-mold clamping seat 7 is provided with a buckle groove forming convex block 10, and the buckle groove forming convex block 10 corresponds to the position of the storage barrel thick-wall deep cavity forming convex part 3.
In this embodiment, connecting plate 9 is used for connecting fixed buckle groove shaping lug 10, in the in-process of moulding plastics, is used for the buckle groove structure of the sealed storage bucket of synchronous shaping through buckle groove shaping lug 10 for a plurality of buckle groove structures of round of sealed storage bucket need not to carry out secondary operation when moulding plastics, greatly reduced manufacturing cost and cost of labor, buckle groove structure shaping precision is high.
As shown in fig. 2 and 3, a plurality of connecting plate positioning grooves 11 are formed in the sealing storage barrel molding lower die 2, and the connecting plates 9 are in clamping fit with the connecting plate positioning grooves 11.
In this embodiment, the connecting plate positioning groove 11 is used for positioning the connecting plate 9, and positioning the connecting plate 9 is achieved in the mold closing process.
A plurality of clamping seat positioning grooves 12 are also arranged in the sealing storage barrel molding lower die 2, and the in-die clamping seat 7 is matched with the clamping seat positioning grooves 12 in a clamping way.
In this embodiment, the clamping seat positioning groove 12 is used for positioning the in-mold clamping seat 7, and positioning the in-mold clamping seat 7 is realized in the mold clamping process.
Referring to fig. 4, a clamping seat connecting piece 13 is arranged in the upper mold 1 for molding the sealed storage barrel, and the clamping seat connecting piece 13 is connected with the inner clamping seat 7.
In this embodiment, the clamping seat connecting piece 13 is used for playing a role in connecting the in-mold clamping seat 7, so that the in-mold clamping seat 7 and the mold can be conveniently clamped and demoulded, the plastic part can be conveniently demoulded, and the demoulding efficiency is higher.
The clamping seat connecting piece 13 comprises a plurality of clamping seat connecting sliding blocks 14 arranged in the upper die 1 for molding the sealed storage barrel, wherein the clamping seat connecting sliding blocks 14 are connected with the inner die clamping seat 7, a plurality of connecting sliding rods 15 are arranged in the clamping seat connecting sliding blocks 14, and the connecting sliding rods 15 penetrate through the clamping seat connecting sliding blocks 14 and are connected with the inner die clamping seat 7.
In this embodiment, through the cooperation between cassette connection slider 14 and the connection slide bar 15 for play the effect of being connected to interior cassette 7, make things convenient for interior cassette 7 and mould to carry out the compound die drawing of patterns, be convenient for carry out the drawing of patterns with the plastic part, drawing of patterns efficiency is higher, makes buckle groove shaping lug 10 convenient to remove the drawing of patterns.
Referring to fig. 2-3, the storage tub thick-wall deep cavity forming convex part 3 includes a storage tub thick-wall deep cavity forming convex seat 16 disposed on the sealed storage tub forming lower die 2, the storage tub thick-wall deep cavity forming concave part 4 includes a storage tub thick-wall deep cavity forming concave cavity 17 disposed in the sealed storage tub forming upper die 1, and the storage tub thick-wall deep cavity forming convex seat 16 corresponds to the storage tub thick-wall deep cavity forming concave cavity 17 in position and is matched in shape.
In this embodiment, during the injection molding process, the storage barrel thick-wall deep cavity molding boss 16 is in abutting fit with the storage barrel thick-wall deep cavity molding concave cavity 17 to form a complete cavity.
As shown in fig. 1, the injection molding part 6 includes an injection molding main plate 18 disposed above the upper mold 1 for molding the sealed storage tub.
In this embodiment, in the injection molding process, the molten material is injected into the cavity through the injection molding main plate 18, and injection molding is completed.
The working principle of the utility model is as follows:
in the injection molding process, the upper sealing storage barrel molding die 1 and the lower sealing storage barrel molding die 2 are mutually close to each other, so that the storage barrel thick-wall deep cavity molding convex seat 16 and the storage barrel thick-wall deep cavity molding concave cavity 17 are in butt joint and matched to form a complete cavity, molten materials are injected into the cavity through the injection molding main board 18, the in-mold clamping seat 7 is used for fixing the connecting plate 9, the connecting plate 9 is used for connecting and fixing the clamping groove molding convex block 10, in the injection molding process, the clamping groove molding convex block 10 is used for synchronously molding the clamping groove structure of the sealing storage barrel, a circle of the clamping groove structures of the sealing storage barrel are synchronously molded during injection molding, secondary processing is not needed, the production cost and the labor cost are greatly reduced, the clamping groove structure molding precision is high,
the connecting plate positioning groove 11 is used for positioning the connecting plate 9, realizing the positioning of the connecting plate 9 in the die assembly process,
the clamping seat positioning groove 12 is used for positioning the in-mold clamping seat 7, realizing the positioning of the in-mold clamping seat 7 in the mold clamping process,
through the cooperation between cassette connection slider 14 and the connection slide bar 15 for play the effect of being connected to in-mould cassette 7, make things convenient for in-mould cassette 7 and mould to carry out the compound die drawing of patterns, be convenient for carry out the drawing of patterns with the plastic part, drawing of patterns efficiency is higher, makes buckle groove shaping lug 10 convenient to remove the drawing of patterns.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model.
Although terms such as the sealed tub molding upper mold 1, the sealed tub molding lower mold 2, the tub thick-wall deep cavity molding protrusion 3, the tub thick-wall deep cavity molding recess 4, the tub snap groove molding assembly 5, the injection molding part 6, the in-mold cartridge 7, the snap groove molding part 8, the connection plate 9, the snap groove molding protrusion 10, the connection plate positioning groove 11, the cartridge positioning groove 12, the cartridge connector 13, the cartridge connecting slider 14, the connecting slide bar 15, the tub thick-wall deep cavity molding protrusion 16, the tub thick-wall deep cavity molding cavity 17, the injection molding main plate 18 are used more herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the nature of the utility model and should be construed in a manner consistent with their spirit and scope.
Claims (10)
1. The utility model provides a sealed storage bucket injection moulding mould of thick wall deep cavity food, includes sealed storage bucket shaping upper die (1) and sealed storage bucket shaping lower die (2), its characterized in that, sealed storage bucket shaping lower die (2) on be equipped with storage bucket thick wall deep cavity shaping convex part (3), sealed storage bucket shaping upper die (1) in be equipped with storage bucket thick wall deep cavity shaping concave part (4), storage bucket thick wall deep cavity shaping convex part (3) and storage bucket thick wall deep cavity shaping concave part (4) the position corresponding and the shape match fit, sealed storage bucket shaping upper die (1) in still be equipped with storage bucket buckle groove shaping subassembly (5), storage bucket buckle groove shaping subassembly (5) correspond with the position of storage bucket thick wall deep cavity shaping convex part (3), sealed storage bucket shaping upper die (1) top be equipped with injection molding portion (6).
2. The injection molding die for the thick-wall deep-cavity food sealing storage barrel according to claim 1, wherein the storage barrel buckling groove molding assembly (5) comprises a plurality of in-mold clamping seats (7) arranged in an upper sealing storage barrel molding die (1), the in-mold clamping seats (7) are distributed in a rectangular array along the center point of the upper sealing storage barrel molding die (1), and buckling groove molding parts (8) are arranged at one ends, close to the storage barrel thick-wall deep-cavity molding convex parts (3), of the in-mold clamping seats (7).
3. The injection molding die for the thick-wall deep-cavity food sealing storage barrel according to claim 2, wherein the buckling groove molding part (8) comprises a plurality of connecting plates (9) arranged at one end of the in-mold clamping seat (7) close to the thick-wall deep-cavity molding convex part (3) of the storage barrel, one end of the connecting plates (9) far away from the in-mold clamping seat (7) is provided with buckling groove molding convex blocks (10), and the buckling groove molding convex blocks (10) correspond to the positions of the thick-wall deep-cavity molding convex part (3) of the storage barrel.
4. The injection molding mold for the thick-wall deep-cavity food sealing storage barrel according to claim 3, wherein a plurality of connecting plate positioning grooves (11) are formed in the sealing storage barrel molding lower mold (2), and the connecting plates (9) are in clamping fit with the connecting plate positioning grooves (11).
5. The injection molding mold for the thick-wall deep-cavity food sealing storage barrel according to claim 4, wherein a plurality of clamping seat positioning grooves (12) are further formed in the sealing storage barrel molding lower mold (2), and the in-mold clamping seat (7) is matched with the clamping seat positioning grooves (12) in a clamping manner.
6. The injection molding mold for the thick-wall deep-cavity food sealing storage barrel according to claim 5, wherein a clamping seat connecting piece (13) is arranged in the upper molding mold (1) of the sealing storage barrel, and the clamping seat connecting piece (13) is connected with the in-mold clamping seat (7).
7. The injection molding die for the thick-wall deep-cavity food sealing storage barrel according to claim 6, wherein the clamping seat connecting piece (13) comprises a plurality of clamping seat connecting sliding blocks (14) arranged in the upper molding die (1) for sealing the storage barrel, and the clamping seat connecting sliding blocks (14) are connected with the clamping seat (7) in the molding die.
8. The injection molding die for the thick-wall deep-cavity food sealing storage barrel according to claim 7, wherein a plurality of connecting sliding rods (15) are arranged in the clamping seat connecting sliding blocks (14), and the connecting sliding rods (15) penetrate through the clamping seat connecting sliding blocks (14) and are connected with the in-die clamping seat (7).
9. The injection molding die for the thick-wall deep-cavity food sealed storage barrel according to claim 8, wherein the storage barrel thick-wall deep-cavity molding convex part (3) comprises a storage barrel thick-wall deep-cavity molding convex seat (16) arranged on a sealed storage barrel molding lower die (2), the storage barrel thick-wall deep-cavity molding concave part (4) comprises a storage barrel thick-wall deep-cavity molding concave cavity (17) arranged in a sealed storage barrel molding upper die (1), and the storage barrel thick-wall deep-cavity molding convex seat (16) corresponds to the position of the storage barrel thick-wall deep-cavity molding concave cavity (17) and is matched with the storage barrel thick-wall deep-cavity molding concave cavity (17) in shape.
10. The injection molding die for the thick-wall deep-cavity food sealed storage barrel according to claim 9, wherein the injection molding part (6) comprises an injection molding main plate (18) arranged above the upper molding die (1) for molding the sealed storage barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321050951.0U CN220031041U (en) | 2023-04-27 | 2023-04-27 | Injection molding die for thick-wall deep-cavity food sealing storage barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321050951.0U CN220031041U (en) | 2023-04-27 | 2023-04-27 | Injection molding die for thick-wall deep-cavity food sealing storage barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220031041U true CN220031041U (en) | 2023-11-17 |
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ID=88720289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321050951.0U Active CN220031041U (en) | 2023-04-27 | 2023-04-27 | Injection molding die for thick-wall deep-cavity food sealing storage barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220031041U (en) |
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2023
- 2023-04-27 CN CN202321050951.0U patent/CN220031041U/en active Active
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