CN220280268U - Multi-head optical lens hot pressing device - Google Patents
Multi-head optical lens hot pressing device Download PDFInfo
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- CN220280268U CN220280268U CN202321735411.6U CN202321735411U CN220280268U CN 220280268 U CN220280268 U CN 220280268U CN 202321735411 U CN202321735411 U CN 202321735411U CN 220280268 U CN220280268 U CN 220280268U
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- hot pressing
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- pressing
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- 238000007731 hot pressing Methods 0.000 title claims abstract description 106
- 230000003287 optical effect Effects 0.000 title claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000005485 electric heating Methods 0.000 description 18
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
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- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a multi-head optical lens hot pressing device, which comprises a lower template, wherein the lower template is arranged above a processing table, and a hot pressing hole is formed in the upper end of the lower template; the beam frame is arranged above the processing table, one side of the beam frame is provided with a mounting plate, an upper template is arranged below the mounting plate, a hot pressing head is arranged below the mounting plate, and the hot pressing head is arranged corresponding to the hot pressing hole; the hydraulic cylinder is arranged above the mounting plate, the connecting rod is arranged above the upper die plate, the connecting nut is arranged above the mounting plate, the spring is arranged outside the connecting rod, two ends of the spring are respectively attached to the mounting plate and the upper die plate, the hot pressing device is provided with four pressing heads, four optical lens hot pressing processes can be carried out at one time, the number of the pressing heads can be changed according to actual requirements, the hot pressing efficiency of the optical lens is greatly improved, and the requirement of large-scale optical lens hot pressing processes can be met.
Description
Technical Field
The utility model relates to the technical field of hot pressing of optical lenses, in particular to a multi-head optical lens hot pressing device.
Background
The lens is made of transparent materials with one or more curved surfaces and made of optical materials such as glass or resin, wherein the optical lens is prepared by mixing oxides of high-purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium and the like according to a specific formula, melting the mixture in a platinum crucible at a high temperature, uniformly stirring the mixture by using ultrasonic waves, and removing bubbles; then slowly cooling for a long time to avoid the generation of internal stress of the glass block. The hot pressing device is a common optical lens processing device, and the hot pressing is a technical process for heating and pressurizing the optical lens after pavement molding to prepare the optical lens with certain mechanical strength and water resistance.
The Chinese patent publication No. CN201971727U, the authorized bulletin day is 2011, 09 and 14, the multi-head optical lens hot pressing device comprises a base (13) and an operation platform (12) fixed on the base (13), and comprises a plurality of press heads, each press head comprises an upper die (10), and each upper die (10) is connected with a driving mechanism; the operation platform (12) is fixedly provided with a plurality of lower dies (14), and each lower die (14) is vertically aligned with a corresponding upper die (10). The utility model is provided with a plurality of profiling machine heads, so that a plurality of optical lenses can be pressed at the same time by one operation, which clearly greatly improves the production efficiency of products.
The existing hot pressing device is only provided with one profiling machine head, and can only carry out hot pressing processing of one optical lens at a time, so that the hot pressing efficiency is poor when large-scale optical lenses are hot pressed, the hot pressing time is greatly increased, and the use requirement cannot be met.
Disclosure of Invention
The utility model aims to provide a multi-head optical lens hot pressing device, which aims to solve the problems that in the prior art, only one pressing machine head is arranged in the existing hot pressing device, and only one optical lens hot pressing process can be carried out at a time, so that the hot pressing efficiency is poor when large-scale optical lenses are hot pressed, the hot pressing time consumption is greatly increased, and the use requirement cannot be met.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a bull optical lens hot press device, includes the processing platform, still includes:
the lower die plate is arranged above the processing table, the lower die plate is attached to the processing table, the upper end of the lower die plate is provided with hot-pressing holes, four hot-pressing holes are formed in the upper end of the lower die plate, and the four hot-pressing holes are formed in the upper end of the lower die plate at equal intervals;
the beam frame is arranged above the processing table and is connected with the processing table through screws, the beam frame is arranged on one side of the lower template, a mounting plate is arranged on one side of the beam frame, an upper template is arranged below the mounting plate, hot-pressing heads are arranged below the mounting plate, the number of the hot-pressing heads is four, the hot-pressing heads and the upper template are integrated, and the hot-pressing heads and the hot-pressing holes are correspondingly arranged;
the hydraulic cylinder, it sets up the top of mounting panel, and the both ends of pneumatic cylinder respectively with roof beam structure and mounting panel fixed connection, the top of cope match-plate pattern is provided with the connecting rod, and the connecting rod is provided with four, and the one end and the cope match-plate pattern fixed connection of connecting rod, the connecting rod corresponds the setting with the hot pressing head, connecting rod and mounting panel swing joint, the top of mounting panel is provided with coupling nut, and coupling nut and connecting rod threaded connection, the outside of connecting rod is provided with the spring, and spring and connecting rod sliding connection, the both ends of spring laminate with mounting panel and cope match-plate pattern respectively.
Preferably, a first electric heating component is arranged in the lower die plate, and is connected with the lower die plate into a whole, and the first electric heating component is arranged outside the hot pressing hole.
Preferably, the inside of hot-pressing head all is provided with second electrical heating component, and second electrical heating component is connected as an organic wholely with the cope match-plate pattern, second electrical heating component sets up the inside at the hot-pressing head, one side of processing platform is provided with control button, and control button passes through screw connection with the processing platform, one side of roof beam structure is provided with the control line, and the equal joint of control line and first electrical heating component and second electrical heating component.
Preferably, the top of processing platform is provided with the connecting block, and the connecting block is provided with four, and connecting block and processing platform fixed connection, four the connecting block sets up the outside at the lower bolster, be provided with the screw hole on the outer wall of lower bolster, four one side of connecting block all is provided with the locking bolt, and the one end of locking bolt runs through the connecting block and extends to the inside of screw hole, locking bolt and lower bolster threaded connection.
Preferably, the inboard of roof beam frame is provided with the spout, one side of mounting panel is provided with the slide, and slide and mounting panel fixed connection, the one end of slide extends to the inside of spout, and slide and roof beam frame sliding connection.
Preferably, four the bottom in hot pressing hole all is provided with the ejector plate, and ejector plate and lower bolster swing joint, the upper end of processing platform all is provided with the recess, and recess and hot pressing hole correspond the setting, the inside of recess is provided with electric telescopic handle, and electric telescopic handle's both ends respectively with lower bolster and ejector plate fixed connection.
Compared with the prior art, the utility model has the beneficial effects that:
1. the device is provided with four hot pressing heads, four hot pressing holes, four connecting rods, four connecting nuts and four springs, wherein the hot pressing heads and the hot pressing holes are correspondingly arranged, so that hot pressing processing can be carried out on a plurality of optical lenses at the same time, the connecting rods and the connecting nuts connect the upper templates with the mounting plates, the springs enable the connecting structures to have a buffer effect, and a protective effect is achieved when the hot pressing heads are in instant contact with the optical lenses;
2. according to the device, through the arrangement of the first electric heating component and the second electric heating component, the first electric heating component heats the optical lens in the hot pressing hole, the second electric heating component heats the hot pressing head, and the optical lens in the hot pressing hole is better subjected to hot pressing treatment;
3. according to the device, the ejector plate and the electric telescopic rod are arranged, the electric telescopic rod drives the ejector plate to lift, and the hot-pressed optical lens in the hot-pressing hole is ejected along with the lifting of the ejector plate, so that the unloading is convenient.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view of a lower die plate of the present utility model;
FIG. 3 is a diagram showing the connection relationship between the lower template and the processing table according to the present utility model;
FIG. 4 is a diagram showing the connection relationship between the upper template and the mounting plate.
In the figure: 1. a processing table; 2. a beam frame; 3. a mounting plate; 4. a hydraulic cylinder; 5. a chute; 6. an upper template; 7. a hot press head; 8. a control button; 9. a lower template; 10. hot pressing the hole; 11. a connecting block; 12. a control line; 13. a slide plate; 14. a first electrical heating assembly; 15. a locking bolt; 16. a threaded hole; 17. an ejector plate; 18. a groove; 19. an electric telescopic rod; 20. a connecting rod; 21. a spring; 22. a connecting nut; 23. a second electrical heating assembly.
Description of the embodiments
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.
Referring to fig. 1-4, an embodiment of the present utility model is provided: the multi-head optical lens hot pressing device comprises a processing table 1 and further comprises:
the lower die plate 9 is arranged above the processing table 1, the lower die plate 9 is attached to the processing table 1, the upper end of the lower die plate 9 is provided with four hot-pressing holes 10, and the four hot-pressing holes 10 are equidistantly arranged at the upper end of the lower die plate 9;
the beam frame 2 is arranged above the processing table 1, the beam frame 2 is connected with the processing table 1 through screws, the beam frame 2 is arranged on one side of the lower template 9, the mounting plate 3 is arranged on one side of the beam frame 2, the upper template 6 is arranged below the mounting plate 3, the hot-pressing heads 7 are arranged below the mounting plate 3, the number of the hot-pressing heads 7 is four, the hot-pressing heads 7 and the upper template 6 are integrated, and the hot-pressing heads 7 and the hot-pressing holes 10 are correspondingly arranged;
the pneumatic cylinder 4, it sets up in the top of mounting panel 3, and the both ends of pneumatic cylinder 4 are provided with connecting rod 20 with roof beam structure 2 and mounting panel 3 fixed connection respectively, the top of cope match-plate pattern 6, connecting rod 20 is provided with four, and connecting rod 20's one end and cope match-plate pattern 6 fixed connection, connecting rod 20 corresponds the setting with hot pressing head 7, connecting rod 20 and mounting panel 3 swing joint, mounting panel 3's top is provided with coupling nut 22, and coupling nut 22 and connecting rod 20 threaded connection, connecting rod 20's outside is provided with spring 21, and spring 21 and connecting rod 20 sliding connection, the both ends of spring 21 laminate with mounting panel 3 and cope match-plate pattern 6 respectively.
When in use, the utility model is characterized in that: the proper lower template 9 and the proper upper template 6 are respectively connected with the processing table 1 and the mounting plate 3, the optical lens is placed into the hot pressing hole 10, the hydraulic cylinder 4 is driven to drive the mounting plate 3 to descend, the hot pressing head 7 is pressed into the hot pressing hole 10 along with the descending of the mounting plate 3, the hot pressing head 7 is in contact with the optical lens in the hot pressing hole 10 to realize hot pressing, the spring 21 enables the connecting structure of the upper template 6 to have a buffer effect, a protective effect is achieved when the hot pressing head 7 is in instant contact with the optical lens, and the optical lens can be prevented from being excessively damaged in instant stress.
Referring to fig. 2, a first electric heating component 14 is disposed inside the lower mold plate 9, and the first electric heating component 14 is integrally connected with the lower mold plate 9, the first electric heating component 14 is disposed outside the hot pressing hole 10, and the first electric heating component 14 heats the optical lens in the hot pressing hole 10.
Referring to fig. 1 and 4, the inside of the thermal head 7 is provided with a second electric heating component 23, the second electric heating component 23 is connected with the upper die plate 6 into a whole, the second electric heating component 23 is arranged in the thermal head 7, one side of the processing table 1 is provided with a control button 8, the control button 8 is connected with the processing table 1 through a screw, one side of the beam frame 2 is provided with a control wire 12, and the control wire 12 is clamped with the first electric heating component 14 and the second electric heating component 23, and the thermal head 7 is heated through the second electric heating component 23.
Referring to fig. 1 and 2, the connection block 11 is arranged above the processing table 1, four connection blocks 11 are arranged, the connection block 11 is fixedly connected with the processing table 1, the four connection blocks 11 are arranged outside the lower die plate 9, threaded holes 16 are formed in the outer wall of the lower die plate 9, locking bolts 15 are arranged on one sides of the four connection blocks 11, one ends of the locking bolts 15 penetrate through the connection blocks 11 and extend to the interiors of the threaded holes 16, the locking bolts 15 are in threaded connection with the lower die plate 9, and the lower die plate 9 is limited through the connection blocks 11 and the locking bolts 15, so that stability of the lower die plate 9 is guaranteed.
Referring to fig. 1, a sliding groove 5 is formed in the inner side of a beam frame 2, a sliding plate 13 is arranged on one side of a mounting plate 3, the sliding plate 13 is fixedly connected with the mounting plate 3, one end of the sliding plate 13 extends to the inside of the sliding groove 5, the sliding plate 13 is slidably connected with the beam frame 2, the sliding plate 13 slides along the sliding groove 5, the lifting upper die plate 6 can be guided and limited, and the lower end of a hot pressing head 7 is guaranteed to be horizontal.
Referring to fig. 3, the bottoms of the four hot pressing holes 10 are provided with ejector plates 17, the ejector plates 17 are movably connected with the lower mold plate 9, grooves 18 are formed in the upper end of the processing table 1, the grooves 18 are correspondingly arranged with the hot pressing holes 10, electric telescopic rods 19 are arranged in the grooves 18, two ends of each electric telescopic rod 19 are fixedly connected with the lower mold plate 9 and the ejector plates 17 respectively, the ejector plates 17 are driven to lift by the electric telescopic rods 19, and optical lenses after hot pressing in the hot pressing holes 10 are ejected along with the lifting of the ejector plates 17, so that the optical lenses are convenient to discharge.
Working principle: the proper lower die plate 9 and the proper upper die plate 6 are respectively connected with the processing table 1 and the mounting plate 3, the optical lens is placed in the hot-pressing hole 10, the first electric heating component 14 is started to heat the optical lens in the hot-pressing hole 10, the second electric heating component 23 is started to heat the hot-pressing head 7, the hydraulic cylinder 4 is driven to drive the mounting plate 3 to descend, the hot-pressing head 7 is pressed into the hot-pressing hole 10 along with the descending of the mounting plate 3, the hot-pressing head 7 is contacted with the optical lens in the hot-pressing hole 10 to realize hot-pressing processing, the spring 21 enables the connecting structure of the upper die plate 6 to have a buffer effect, a protective effect is realized when the hot-pressing head 7 is instantaneously contacted with the optical lens, and the optical lens can be prevented from being excessively damaged due to instantaneous stress; after the hot pressing is finished, the electric telescopic rod 19 is driven to drive the ejector plate 17 to lift, and the optical lens after the hot pressing in the hot pressing hole 10 is ejected along with the lifting of the ejector plate 17, so that the unloading is convenient.
What is not described in detail in this specification is prior art known to those skilled in the art.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The multi-head optical lens hot pressing device comprises a processing table (1), and is characterized by further comprising:
the lower die plate (9) is arranged above the processing table (1), the lower die plate (9) is attached to the processing table (1), hot-pressing holes (10) are formed in the upper end of the lower die plate (9), four hot-pressing holes (10) are formed in the upper end of the lower die plate (9), and the four hot-pressing holes (10) are formed in the upper end of the lower die plate (9) at equal intervals;
the beam frame (2) is arranged above the processing table (1), the beam frame (2) is connected with the processing table (1) through screws, the beam frame (2) is arranged on one side of the lower template (9), one side of the beam frame (2) is provided with the mounting plate (3), the lower part of the mounting plate (3) is provided with the upper template (6), the lower part of the mounting plate (3) is provided with the hot-pressing heads (7), the hot-pressing heads (7) are provided with four, the hot-pressing heads (7) and the upper template (6) are integrally arranged, and the hot-pressing heads (7) and the hot-pressing holes (10) are correspondingly arranged;
the hydraulic cylinder (4), it sets up the top of mounting panel (3), and the both ends of pneumatic cylinder (4) respectively with roof beam structure (2) and mounting panel (3) fixed connection, the top of cope match-plate pattern (6) is provided with connecting rod (20), and connecting rod (20) are provided with four, and the one end and cope match-plate pattern (6) fixed connection of connecting rod (20), connecting rod (20) correspond the setting with hot pressing head (7), connecting rod (20) and mounting panel (3) swing joint, the top of mounting panel (3) is provided with connecting nut (22), and connecting nut (22) and connecting rod (20) threaded connection, the outside of connecting rod (20) is provided with spring (21), and spring (21) and connecting rod (20) sliding connection, the both ends of spring (21) laminate with mounting panel (3) and cope match-plate pattern (6) respectively.
2. The multi-headed optical lens hot pressing apparatus of claim 1, wherein: the inside of lower bolster (9) is provided with first electrical heating subassembly (14), and first electrical heating subassembly (14) are connected as an organic wholely with lower bolster (9), first electrical heating subassembly (14) set up in the outside of hot pressing hole (10).
3. The multi-headed optical lens hot pressing apparatus of claim 2, wherein: the inside of hot pressing head (7) all is provided with second electrical heating subassembly (23), and second electrical heating subassembly (23) are connected as an organic wholely with cope match-plate pattern (6), second electrical heating subassembly (23) set up the inside at hot pressing head (7), one side of processing platform (1) is provided with control button (8), and control button (8) pass through screw connection with processing platform (1), one side of roof beam rest (2) is provided with control line (12), and control line (12) and first electrical heating subassembly (14) and the equal joint of second electrical heating subassembly (23).
4. The multi-headed optical lens hot pressing apparatus of claim 1, wherein: the top of processing platform (1) is provided with connecting block (11), and connecting block (11) are provided with four, and connecting block (11) and processing platform (1) fixed connection, four connecting block (11) set up the outside at lower bolster (9), be provided with screw hole (16) on the outer wall of lower bolster (9), four one side of connecting block (11) all is provided with locking bolt (15), and the one end of locking bolt (15) runs through connecting block (11) and extends to the inside of screw hole (16), locking bolt (15) and lower bolster (9) threaded connection.
5. The multi-headed optical lens hot pressing apparatus of claim 1, wherein: the inside of roof beam structure (2) is provided with spout (5), one side of mounting panel (3) is provided with slide (13), and slide (13) and mounting panel (3) fixed connection, the one end of slide (13) extends to the inside of spout (5), and slide (13) and roof beam structure (2) sliding connection.
6. The multi-headed optical lens hot pressing apparatus of claim 1, wherein: four the bottom of hot pressing hole (10) all is provided with liftout plate (17), and liftout plate (17) and lower bolster (9) swing joint, the upper end of processing platform (1) all is provided with recess (18), and recess (18) set up with hot pressing hole (10) correspondence, the inside of recess (18) is provided with electric telescopic handle (19), and electric telescopic handle (19) both ends respectively with lower bolster (9) and liftout plate (17) fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321735411.6U CN220280268U (en) | 2023-07-04 | 2023-07-04 | Multi-head optical lens hot pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321735411.6U CN220280268U (en) | 2023-07-04 | 2023-07-04 | Multi-head optical lens hot pressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220280268U true CN220280268U (en) | 2024-01-02 |
Family
ID=89339055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321735411.6U Active CN220280268U (en) | 2023-07-04 | 2023-07-04 | Multi-head optical lens hot pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220280268U (en) |
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2023
- 2023-07-04 CN CN202321735411.6U patent/CN220280268U/en active Active
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