CN218361941U - Molding machine for casting - Google Patents
Molding machine for casting Download PDFInfo
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- CN218361941U CN218361941U CN202222843188.9U CN202222843188U CN218361941U CN 218361941 U CN218361941 U CN 218361941U CN 202222843188 U CN202222843188 U CN 202222843188U CN 218361941 U CN218361941 U CN 218361941U
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Abstract
The utility model discloses a molding machine for casting, which comprises a frame body, wherein the frame body comprises a base, the top end of the base is fixedly connected with a plurality of stand columns, and the top ends of the stand columns are fixedly connected with a top plate; the upper molding assembly comprises an upper sand cylinder, an upper bottom plate is arranged in the upper sand cylinder, two upper sand inlets are formed in the upper bottom plate, and a vibration motor is fixedly connected to the upper sand cylinder; the lower molding assembly comprises a lower sand cylinder, a lower bottom plate is arranged in the lower sand cylinder, the lower sand cylinder and the lower bottom plate are movably connected with the base, a lower sand inlet is formed in the lower bottom plate, and a vibration motor is mounted on the lower bottom plate; the model component comprises a slide way, the slide way is fixedly connected with the stand column, a template is slidably connected in the slide way, and the template is movably connected with an electric push rod. This device simple structure makes the molding sand compacter through vibrating motor and upper plate and lower plate's combined action, and it is easier that go up a sand section of thick bamboo and a lower sand section of thick bamboo makes the sand mould drawing of patterns, satisfies the operation requirement.
Description
Technical Field
The utility model relates to a foundry goods molding machine field especially relates to a molding machine is used in casting processing.
Background
The molding machine is used for manufacturing sand molds, and mainly changes loose molding sand filled in a sand box into compact molding sand, so that the sand mold keeps certain strength, and the damage in the processes of carrying, pouring and the like is avoided. The degree of density of the molding sand can influence the smooth finish of the surface of the molded casting body, the molding sand is compact, the surface is gradually smooth and flat, the molding sand is loose and has uneven density, and the surface of the molded casting has irregular high points. In the prior art, for saving cost and processing time, only adopt the pressure head on the equipment to carry out the compaction when not few equipment is inseparable to the molding sand, and the position of compaction molding sand with the pressure head contact is usually compacter, and the position of keeping away from the pressure head can be loose, appears the quality problems easily in transporting or the use to directly take away the sand box and cast, the turnover of sand box is inconvenient, also influences production efficiency under a lot of circumstances.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a molding machine is used in casting processing to solve the problem that above-mentioned prior art exists, make the molding sand become more compact even when molding, avoid appearing quality problems when transporting and using, reduce the influence to production efficiency.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a molding machine is used in casting processing, include:
the rack body comprises a base, a plurality of stand columns are fixedly connected to the top end of the base, and top plates are fixedly connected to the top ends of the stand columns;
the upper molding assembly comprises an upper sand cylinder, an upper bottom plate is arranged in the upper sand cylinder, the upper sand cylinder and the upper bottom plate are respectively movably connected with the top plate, two upper sand inlets are formed in the upper bottom plate, and a vibration motor is fixedly connected to the upper sand cylinder;
the lower molding assembly comprises a lower sand cylinder, a lower bottom plate is arranged in the lower sand cylinder, the lower sand cylinder and the lower bottom plate are movably connected with the base, a lower sand inlet is formed in the lower bottom plate, and the lower bottom plate is provided with the vibration motor;
the model subassembly, the model subassembly includes the slide, the slide with stand fixed connection, sliding connection has the template in the slide, template swing joint has electric putter, the slide is located go up a sand section of thick bamboo with between the sand section of thick bamboo down.
Preferably, a plurality of first air cylinders and first hydraulic cylinders are fixedly mounted at the bottom end of the top plate, the output end of each first air cylinder is fixedly connected with the upper sand cylinder, the output end of each first hydraulic cylinder is fixedly connected with the upper bottom plate, and the side wall of the upper bottom plate is abutted to the upper sand cylinder.
Preferably, go up sand mouth department fixedly connected with first sand guide pipe, the through-hole is seted up to the roof, install the second in the through-hole and lead the sand pipe, the second is led the sand pipe and is stretched into in the first sand guide pipe.
Preferably, a plurality of second cylinders and second hydraulic cylinders are fixedly mounted on the base, the output ends of the second cylinders are fixedly connected with the lower sand cylinder, the output ends of the second hydraulic cylinders are fixedly connected with the lower bottom plate, and the side wall of the lower bottom plate is abutted to the lower sand cylinder.
Preferably, sliding connection has the bracket in the slide, the bracket includes four vertical direction, the template is located four in the vertical direction and with vertical direction sliding connection.
Preferably, the electric putter output with bracket fixed connection, electric putter's stiff end fixedly connected with backup plate, backup plate bottom fixedly connected with workstation.
Preferably, the workbench is fixedly connected with a third cylinder, an output end of the third cylinder is fixedly connected with a push plate, and the push plate faces the lower base plate.
Preferably, a plurality of support columns of fixedly connected with on the base, the support column rotates and is connected with a plurality of circle rollers, and is a plurality of the circle roller overcoat is equipped with the conveyer belt, arbitrary install the motor on the support column, motor output fixedly connected with belt pulley, arbitrary fixedly connected with on the circle roller the belt pulley, connect through belt transmission between the belt pulley, conveyer belt one end is close to the lower plate.
The utility model discloses a following technological effect: in the device, an upper sand cylinder and an upper bottom plate are respectively movably connected with a top plate, a lower sand cylinder and a lower bottom plate are movably connected with a base, a stand column is used for supporting the top plate, when in molding, a template is pushed between the upper sand cylinder and the lower sand cylinder by an electric push rod, the lower sand cylinder and the lower bottom plate move upwards, the moving distance of the lower sand cylinder is greater than that of the lower bottom plate, finally the lower sand cylinder moves to the top end of the lower bottom plate, the lower sand cylinder pushes the template out of a slideway, the lower sand cylinder, the lower bottom plate and the template also form a closed cavity for molding a lower sand mold, the upper bottom plate moves to the upper sand cylinder and moves downwards, finally the upper bottom plate moves to the top of the upper sand cylinder, after the upper sand cylinder and the template are abutted, the upper sand cylinder, the upper bottom plate and the template form a closed cavity for molding the upper sand mold, molding sand is injected into the lower sand cylinder through the lower sand inlet, and molding sand is injected into the upper sand cylinder through the upper sand inlet, after the molding sand is injected, a vibration motor is started to vibrate an upper sand cylinder and a lower plate, so that the molding sand is more compact, meanwhile, the upper plate and the lower plate are subjected to pressure maintaining, after the pressure maintaining is completed, the upper plate and the upper sand cylinder move upwards, the lower plate and the lower sand cylinder move downwards, a template falls into a slideway, an electric push rod pulls out the template, the lower plate and the lower sand cylinder ascend again, the upper plate and the upper sand cylinder descend again, the upper sand cylinder and the lower sand cylinder are in contact, the upper sand cylinder retreats upwards after the contact, the upper plate is kept still, the manufactured upper sand mold is separated from the upper sand cylinder, the demolding of the upper sand mold is completed, after the demolding of the upper sand mold is completed, the lower sand cylinder and the lower plate descend, the descending distance of the lower plate is smaller than the descending distance of the lower sand cylinder, the lower sand mold in the lower sand cylinder can be completely separated, and the demolding is completed. This device simple structure, the combined action through vibrating motor and upper plate and lower plate makes the molding sand compacter, goes up a sand section of thick bamboo and makes the sand mould drawing of patterns easier with a lower sand section of thick bamboo, satisfies the operation requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of the structure of the molding machine for casting according to the present invention;
fig. 2 is a top view of the bracket of the present invention;
FIG. 3 is a schematic cross-sectional view of the slide of the present invention;
wherein, 1, a base; 2. a column; 3. a top plate; 4. a sand feeding cylinder; 5. an upper base plate; 6. a vibration motor; 7. a sand discharging cylinder; 8. a lower base plate; 9. a lower sand inlet; 10. a slideway; 11. a template; 12. an electric push rod; 13. a first cylinder; 14. a first hydraulic cylinder; 15. a first sand guide pipe; 16. a second sand guide pipe; 17. a second cylinder; 18. a second hydraulic cylinder; 19. a bracket; 20. guiding vertically; 21. a backup plate; 22. a work table; 23. a third cylinder; 24. pushing the plate; 25. a support pillar; 26. a round roller; 27. a conveyor belt; 28. an electric motor.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1-3, the present invention provides a molding machine for casting, comprising:
the frame body comprises a base 1, wherein the top end of the base 1 is fixedly connected with a plurality of stand columns 2, and the top ends of the stand columns 2 are fixedly connected with a top plate 3; the upright post 2 is used for supporting the top plate 3, and the base 1 and the top plate 3 are used for installing parts.
The upper molding assembly comprises an upper sand cylinder 4, an upper bottom plate 5 is arranged in the upper sand cylinder 4, the upper sand cylinder 4 and the upper bottom plate 5 are respectively movably connected with the top plate 3, two upper sand inlets are formed in the upper bottom plate 5, and a vibrating motor 6 is fixedly connected to the upper sand cylinder 4; upper plate 5 can move in last sand section of thick bamboo 4, and in this embodiment, when using, upper plate 5 removes the top of last sand section of thick bamboo 4, and upper plate 5 and last sand section of thick bamboo 4 constitute the space that can adorn the molding sand, and the molding sand is followed and is advanced the sand mouth and enter into in last sand section of thick bamboo 4, and the molding sand that enters into last sand section of thick bamboo 4 uses vibrating motor 6 vibration for the more compact reality of molding sand.
The lower molding assembly comprises a lower sand cylinder 7, a lower bottom plate 8 is arranged in the lower sand cylinder 7, the lower sand cylinder 7 and the lower bottom plate 8 are movably connected with the base 1, a lower sand inlet 9 is formed in the lower bottom plate 8, and a vibrating motor 6 is arranged on the lower bottom plate 8; lower plate 8 can move in lower sand section of thick bamboo 7, and when using, lower sand section of thick bamboo 7 and 8 simultaneous upward movements of lower plate, lower sand section of thick bamboo 7 migration distance is greater than 8 migration distances of lower plate, and finally lower sand section of thick bamboo 7 moves to 8 tops of lower plate, and another space that can adorn the molding sand is constituteed to lower plate 8 and lower sand section of thick bamboo 7, and the molding sand is from advancing sand mouth 9 down and entering into lower sand section of thick bamboo 7 in, and the molding sand becomes more compact under vibrating motor 6's effect.
The model assembly comprises a slide way 10, the slide way 10 is fixedly connected with the upright post 2, a template 11 is connected in the slide way 10 in a sliding manner, the template 11 is movably connected with an electric push rod 12, and the slide way 10 is positioned between the upper sand cylinder 4 and the lower sand cylinder 7; the electric push rod 12 can push the template 11 to slide in the slideway 10, the template 11 is provided with a shape to be shaped, when the shape is required, the electric push rod 12 is used to push the template 11 to be between the upper sand cylinder 4 and the lower sand cylinder 7, the lower sand cylinder 7 is lifted, and push the template 11 out of the slideway 10, at the same time, the upper sand cylinder 4 and the upper bottom plate 5 move downwards and are abutted to the template 11, at the moment, the upper sand cylinder 4, the upper bottom plate 5 and the template 11 form a closed cavity, molding sand is injected into the cavity through the upper sand inlet, the lower sand cylinder 7 and the lower bottom plate 8 move upwards, the lower sand cylinder 7, the lower bottom plate 8 and the template 11 also form a closed cavity, molding sand is injected into the cavity through the lower sand inlet 9, under the action of the vibrating motor 6, the molding sand in the upper sand cylinder 4 and the molding sand in the lower sand cylinder 7 become compact, and the upper bottom plate 5 and the lower bottom plate 8 are simultaneously maintained for a certain time, after the molding is finished, the upper bottom plate 5 and the upper sand cylinder 4 move upwards, the lower bottom plate 8 and the lower sand cylinder 7 move downwards, the template 11 falls into the slideway 10, the electric push rod 12 pulls the template 11 out of the area between the upper sand cylinder 4 and the lower sand cylinder 7, the lower bottom plate 8 and the lower sand cylinder 7 ascend again, the upper bottom plate 5 and the upper sand cylinder 4 descend again, the upper sand cylinder 4 contacts with the lower sand cylinder 7, after the contact, the upper sand cylinder 4 retreats upwards, the upper bottom plate 5 keeps still, the manufactured upper sand mold is separated from the upper sand cylinder 4, the demolding of the upper sand mold is finished, after the demolding of the upper sand mold is finished, the lower sand cylinder 7 and the lower bottom plate 8 descend, the descending distance of the lower bottom plate 8 is smaller than the descending distance of the lower sand cylinder 7, the lower sand mold in the lower sand cylinder 7 can be completely separated, and the molding and demolding are finished.
According to the further optimization scheme, a plurality of first air cylinders 13 and first hydraulic cylinders 14 are fixedly mounted at the bottom end of the top plate 3, the output ends of the first air cylinders 13 are fixedly connected with the upper sand cylinder 4, the output ends of the first hydraulic cylinders 14 are fixedly connected with the upper bottom plate 5, and the side wall of the upper bottom plate 5 is abutted to the upper sand cylinder 4; the first cylinder 13 drives the upper sand cylinder 4 to move, the first hydraulic cylinder 14 drives the upper bottom plate 5 to move, and the upper bottom plate 5 can move on the upper sand cylinder 4, but sand leakage cannot occur during sand injection.
According to the further optimization scheme, a first sand guide pipe 15 is fixedly connected to the upper sand inlet, a through hole is formed in the top plate 3, a second sand guide pipe 16 is installed in the through hole, and the second sand guide pipe 16 extends into the first sand guide pipe 15; when the upper bottom plate 5 moves, the second sand guide pipe 16 can move in the first sand guide pipe 15, and the first sand guide pipe 15 or the second sand guide pipe 16 is prevented from being damaged.
According to the further optimization scheme, a plurality of second air cylinders 17 and second hydraulic cylinders 18 are fixedly mounted on the base 1, the output ends of the second air cylinders 17 are fixedly connected with the lower sand cylinder 7, the output ends of the second hydraulic cylinders 18 are fixedly connected with the lower bottom plate 8, and the side walls of the lower bottom plate 8 are abutted to the lower sand cylinder 7; the second cylinder 17 drives the lower sand cylinder 7 to move, the second hydraulic cylinder 18 drives the lower bottom plate 8 to move, and the lower bottom plate 8 can move in the lower sand cylinder 7, but sand leakage cannot occur during sand injection.
In a further optimized scheme, a bracket 19 is connected in the slide way 10 in a sliding manner, the bracket 19 comprises four vertical guides 20, and the template 11 is positioned in the four vertical guides 20 and is connected with the vertical guides 20 in a sliding manner; the forms 11 are in the brackets 19 and the four corners of the forms 11 are in the four vertical guides 20 and do not deflect from their original positions when the forms 11 are raised or lowered.
According to a further optimized scheme, the output end of the electric push rod 12 is fixedly connected with the bracket 19, the fixed end of the electric push rod 12 is fixedly connected with a backup plate 21, and the bottom end of the backup plate 21 is fixedly connected with a workbench 22; the electric push rod 12 drives the bracket 19 in the slideway 10, and the electric push rod 12 is fixedly connected with the backup plate 21, so that the electric push rod 12 is more stable in working.
In a further optimized scheme, a third air cylinder 23 is fixedly connected to the workbench 22, the output end of the third air cylinder 23 is fixedly connected with a push plate 24, and the push plate 24 faces the lower bottom plate 8; the third cylinder 23 drives the push plate 24 to move, when the molding is completed, the output end of the third cylinder 23 extends out, and the push plate 24 pushes the sand mold away from the lower bottom plate 8.
According to the further optimization scheme, a plurality of supporting columns 25 are fixedly connected to the base 1, a plurality of round rollers 26 are rotatably connected to the supporting columns 25, conveyor belts 27 are sleeved outside the round rollers 26, a motor 28 is mounted on any supporting column 25, a belt pulley is fixedly connected to the output end of the motor 28, a belt pulley is fixedly connected to any round roller 26, the belt pulleys are in transmission connection through a belt, and one end of each conveyor belt 27 is close to the lower bottom plate 8; motor 28 passes through the belt and drives round roller 26 and rotate, and round roller 26 drives conveyer belt 27 and rotates, and in this embodiment, conveyer belt 27's height is the same with the height of lower plate 8 when the molding is accomplished, and push pedal 24 can be directly with the sand mould push belt 27 on, by conveyer belt 27 with sand mould to other regional transports.
The using method of the device comprises the steps of firstly pushing a bracket 19 between an upper sand cylinder 4 and a lower sand cylinder 7 by using an electric push rod 12, enabling the bracket 19 to simultaneously drive a template 11 to move, then starting a first air cylinder 13 and a first hydraulic cylinder 14 to enable an upper bottom plate 5 and the upper sand cylinder 4 to move downwards, starting a second air cylinder 17 and a second hydraulic cylinder 18 to enable a lower bottom plate 8 and the lower sand cylinder 7 to move upwards, jacking the template 11 for a small distance when the lower sand cylinder 7 moves upwards, enabling the template 11 to move on four vertical guides 20 on the bracket 19, injecting molding sand into the upper sand cylinder 4 through a first sand guide pipe 15 and a second sand guide pipe 16 after the upper sand cylinder 4 and the lower sand cylinder 7 are both abutted to the template 11, injecting the molding sand into the lower sand cylinder 7 through a lower sand inlet 9, vibrating the vibrating motor 6 vibrates the molding sand after the injection is completed, enabling the molding sand to be tighter, and maintaining the pressure of the upper bottom plate 5 and the lower bottom plate 8 at the same time, after vibration and pressure maintaining are completed, the upper bottom plate 5 and the upper sand cylinder 4 move upwards, the lower bottom plate 8 and the lower sand cylinder 7 move downwards, the template 11 falls back into the bracket 19, the bracket 19 is pulled away by the electric push rod 12, the upper bottom plate 5 and the upper sand cylinder 4 move downwards again, the lower bottom plate 8 and the lower sand cylinder 7 move upwards again until the upper sand cylinder 4 and the lower sand cylinder 7 contact, after the contact, the upper sand cylinder 4 moves upwards and retreats, the upper bottom plate 5 keeps still, so that the manufactured upper sand mold is separated from the upper sand cylinder 4, the demolding of the upper sand mold is completed, after the demolding of the upper sand mold is completed, the lower sand cylinder 7 and the lower bottom plate 8 descend, the descending distance of the lower bottom plate 8 is smaller than the descending distance of the lower sand cylinder 7, the lower sand mold in the lower sand cylinder 7 can be completely separated, the descending height of the lower bottom plate 8 is just the same as the height of the conveyor belt 27, the third air cylinder 23 drives the push plate 24 to move, and pushes the lower bottom plate 8 away from the sand mold to the conveyor belt 27, the conveyor 27 transfers the sand moulds to other areas.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only described in the preferred embodiments of the present invention, but not limited to the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. A molding machine for casting, comprising:
the frame comprises a base (1), a plurality of stand columns (2) are fixedly connected to the top end of the base (1), and top plates (3) are fixedly connected to the top ends of the stand columns (2);
the upper molding assembly comprises an upper sand cylinder (4), an upper bottom plate (5) is arranged in the upper sand cylinder (4), the upper sand cylinder (4) and the upper bottom plate (5) are respectively and movably connected with the top plate (3), two upper sand inlets are formed in the upper bottom plate (5), and a vibration motor (6) is fixedly connected to the upper sand cylinder (4);
the lower die assembly comprises a lower sand cylinder (7), a lower bottom plate (8) is arranged in the lower sand cylinder (7), the lower sand cylinder (7) and the lower bottom plate (8) are movably connected with the base (1), a lower sand inlet (9) is formed in the lower bottom plate (8), and the vibrating motor (6) is installed on the lower bottom plate (8);
the model subassembly, the model subassembly includes slide (10), slide (10) with stand (2) fixed connection, sliding connection has template (11) in slide (10), template (11) swing joint has electric putter (12), slide (10) are located go up a sand section of thick bamboo (4) with between lower sand section of thick bamboo (7).
2. The molding machine for casting according to claim 1, wherein: roof (3) bottom fixed mounting has a plurality of first cylinders (13) and first pneumatic cylinder (14), first cylinder (13) output with go up a sand section of thick bamboo (4) fixed connection, first pneumatic cylinder (14) output with upper plate (5) fixed connection, upper plate (5) lateral wall with go up a sand section of thick bamboo (4) butt.
3. The molding machine for casting according to claim 2, wherein: go up sand mouth department fixedly connected with first sand guide pipe (15), roof (3) are seted up the through-hole, install second sand guide pipe (16) in the through-hole, second sand guide pipe (16) stretch into in first sand guide pipe (15).
4. The molding machine for casting according to claim 1, wherein: a plurality of second cylinders (17) and second hydraulic cylinders (18) are fixedly mounted on the base (1), the output ends of the second cylinders (17) are fixedly connected with the lower sand cylinder (7), the output ends of the second hydraulic cylinders (18) are fixedly connected with the lower base plate (8), and the side wall of the lower base plate (8) is abutted to the lower sand cylinder (7).
5. The molding machine for casting according to claim 1, wherein: slide (10) sliding connection has bracket (19), bracket (19) include four vertical direction (20), template (11) are located four in vertical direction (20) and with vertical direction (20) sliding connection.
6. The molding machine for casting according to claim 5, wherein: the output end of the electric push rod (12) is fixedly connected with the bracket (19), the fixed end of the electric push rod (12) is fixedly connected with a backup plate (21), and the bottom end of the backup plate (21) is fixedly connected with a workbench (22).
7. The molding machine for casting according to claim 6, wherein: fixedly connected with third cylinder (23) on workstation (22), third cylinder (23) output end fixedly connected with push pedal (24), push pedal (24) orientation lower plate (8).
8. The molding machine for casting according to claim 7, wherein: a plurality of support columns (25) of fixedly connected with are gone up in base (1), support column (25) are rotated and are connected with a plurality of circle roller (26), and are a plurality of circle roller (26) overcoat is equipped with conveyer belt (27), arbitrary install motor (28) on support column (25), motor (28) output end fixedly connected with belt pulley, arbitrary fixedly connected with is gone up in circle roller (26) the belt pulley, connect through belt transmission between the belt pulley, conveyer belt (27) one end is close to bottom plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222843188.9U CN218361941U (en) | 2022-10-27 | 2022-10-27 | Molding machine for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222843188.9U CN218361941U (en) | 2022-10-27 | 2022-10-27 | Molding machine for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218361941U true CN218361941U (en) | 2023-01-24 |
Family
ID=84934485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222843188.9U Active CN218361941U (en) | 2022-10-27 | 2022-10-27 | Molding machine for casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218361941U (en) |
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2022
- 2022-10-27 CN CN202222843188.9U patent/CN218361941U/en active Active
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