CN222451221U - Forming die with automatic water gap cutting mechanism - Google Patents
Forming die with automatic water gap cutting mechanism Download PDFInfo
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- CN222451221U CN222451221U CN202421212059.2U CN202421212059U CN222451221U CN 222451221 U CN222451221 U CN 222451221U CN 202421212059 U CN202421212059 U CN 202421212059U CN 222451221 U CN222451221 U CN 222451221U
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Abstract
本实用新型公开了一种具有自动断水口机构的成型模具，其包括前模组件、后模组件、注塑组件及脱模组件；所述前模组件与后模组件之间设有定位压紧结构；所述前模组件包括前模安装板、前模压板及前模仁，所述前模仁包括两个成型镶件组件一；所述后模组件包括后模安装板、后模压板及后模仁，所述后模仁包括两个成型镶件组件二；两个所述成型镶件组件二均设有多个定位成型腔二及可拆卸垫板，所述定位成型腔二均设有自动断水口结构。本实用新型通过设置自动断水口实现对成型产品进行自动断水口动作，结构简单，效率快，还防止成型产品脱落时因拉扯造成变形的情况出现，保证成型产品的质量及外观。
The utility model discloses a molding die with an automatic shut-off mechanism, which includes a front mold assembly, a rear mold assembly, an injection molding assembly and a demoulding assembly; a positioning and clamping structure is provided between the front mold assembly and the rear mold assembly; the front mold assembly includes a front mold mounting plate, a front mold pressure plate and a front mold core, and the front mold core includes two molding insert assemblies 1; the rear mold assembly includes a rear mold mounting plate, a rear mold pressure plate and a rear mold core, and the rear mold core includes two molding insert assemblies 2; the two molding insert assemblies 2 are both provided with a plurality of positioning molding cavities 2 and a detachable pad, and the positioning molding cavities 2 are both provided with an automatic shut-off structure. The utility model realizes automatic shut-off of the molding product by setting an automatic shut-off, has a simple structure and high efficiency, and also prevents the deformation caused by pulling when the molding product falls off, thereby ensuring the quality and appearance of the molding product.
Description
Technical Field
The utility model relates to the technical field of a cosmetic pencil body forming die, in particular to a forming die with an automatic water-break mechanism.
Background
The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and precise dimensions. Injection molding is a process used in mass production of parts of complex shape. Specifically, the heated and melted plastic is injected into a die cavity under high pressure by an injection molding machine, and a formed product is obtained after cooling and solidification. The existing cosmetic pencil body is mainly formed by injection molding through a molding die, when a molded product is demolded, the molded product is ejected out of the die through a thimble, but the mode can only enable the molded product to be separated from a water gap together, automatic water gap breaking operation can not be performed when demolding is performed, a follow-up water gap is required to be separated from the molded product, working steps are increased, and the water gap and the molded product can possibly lead to pulling between the water gap and the molded product when the water gap and the molded product are demolded together, so that deformation of the molded product occurs, and quality and appearance of the molded product are affected.
Disclosure of utility model
The utility model provides a forming die with an automatic water-break mechanism aiming at the defects of the prior art, and aims to solve the technical problems that the forming die in the prior art has no automatic water-break function, a subsequent processing step is added, and a formed product is easy to deform due to pulling.
The technical scheme adopted by the utility model for achieving the purpose is as follows:
The molding die with the automatic water gap cutting mechanism comprises a front die assembly, a rear die assembly, an injection molding assembly and a demolding assembly, wherein the injection molding assembly is arranged on the front die assembly, a guide pillar positioning assembly is arranged between the front die assembly and the rear die assembly, the demolding assembly is arranged on the rear die assembly, a positioning and pressing structure is arranged between the front die assembly and the rear die assembly, the front die assembly comprises a front die mounting plate, a front die pressing plate and a front die core, the front die core is connected with the front die pressing plate, the front die core comprises two molding insert assemblies I, and the two molding insert assemblies I are respectively provided with a glue injection runner structure I and a plurality of positioning inserts I;
The rear die assembly comprises a rear die mounting plate, a rear die pressing plate and a rear die core, wherein the rear die pressing plate is connected with the rear die mounting plate, a spacing layer is arranged between the rear die pressing plate and the rear die mounting plate, the rear die core is connected with the rear die pressing plate, the rear die core comprises two molding insert assemblies II, a plurality of positioning molding cavities II and a detachable backing plate are arranged on the two molding insert assemblies II, and an automatic water-break structure is arranged on the positioning molding cavities II;
The demolding assembly is arranged in the spacing layer and comprises a fixed plate, a movable plate, a spring assembly and a thimble assembly, wherein the fixed plate is arranged on the rear mold mounting plate, the movable plate is arranged above the fixed plate, the spring assembly is arranged between the movable plate and the rear mold pressing plate, and the thimble assembly is arranged on the movable plate.
The plastic injection assembly comprises a plastic injection connector and a plastic injection pipe, wherein the plastic injection connector is fixed in the mounting hole, the plastic injection pipe is communicated with the plastic injection port in a connecting mode, two groups of first plastic injection runners are arranged on the front die pressing plate and are communicated with the plastic injection port in a connecting mode, and a plurality of plastic outlets are formed in the first plastic injection runners.
The molding insert comprises a molding insert assembly I, a molding insert assembly II and a molding insert assembly II, wherein the molding insert assembly I is an insert plate, the molding insert assembly I is provided with a plurality of mounting holes I which are arranged in an array mode, a plurality of positioning inserts I are respectively arranged in the mounting holes I, each positioning insert I is provided with a first molding cavity, each molding insert assembly I is also provided with two glue injection port groups I, each glue injection port group I comprises two glue injection ports I which are opposite, each glue injection port I is connected and communicated with a glue outlet of a first glue injection runner, and each molding insert assembly I is also provided with a second glue injection runner group which is respectively provided with a glue injection port I for connection and communication.
The molding insert comprises a molding insert assembly and a molding insert assembly, wherein the molding insert assembly comprises a molding insert and a molding insert assembly, the molding insert assembly comprises a molding insert and a molding insert fixing plate, the molding insert fixing plate is arranged on a rear molding plate, the molding insert is arranged on the molding insert fixing plate, a plurality of molding cavities are arranged on the molding insert in an array mode, the molding insert comprises two molding insert blocks which are oppositely arranged in mirror images, the molding insert assemblies comprise two positioning molding half cavities which are oppositely arranged in mirror images, the positioning molding half cavities are respectively arranged on the molding insert blocks, the molding insert blocks are respectively provided with a plurality of glue injection flow channels, the glue injection flow channels are respectively provided with a glue inlet and a glue outlet, the glue inlet is arranged on the end face of the molding insert blocks, and the glue outlet is respectively arranged on the inner wall of the positioning molding half cavities.
The automatic water-cutting opening structure comprises a plurality of water-cutting opening bulges, wherein the water-cutting opening bulges are respectively arranged on the third glue outlet and are arranged on the inner wall of the positioning molding half cavity II, the water-cutting opening bulges are provided with a first knife surface and a second knife surface, and a third glue injection opening is arranged between the first knife surface and the second knife surface.
And the detachable backing plate comprises two positioning plates which are arranged in a mirror image first pair, and the positioning plates are respectively provided with a plurality of positioning arc openings and a plurality of fourth glue injection openings.
The positioning and compressing structure comprises a central positioning and compressing block and two side positioning and compressing blocks, wherein the central positioning and compressing block is arranged on the central axis of the front die pressing plate, the two side positioning and compressing blocks are arranged on two sides of the front die pressing plate in a mirror image opposite mode;
The front die pressing plate is also provided with a plurality of first positioning blocks, a plurality of first positioning grooves are formed between the two insert blocks, and the first positioning blocks are connected with the first positioning grooves in a matched mode.
The ejector pin assembly comprises a plurality of ejector pins, the ejector pins are respectively arranged in the positioning forming cavity II, each ejector pin is provided with a stop block, each stop block can move along the direction of the positioning forming cavity II, the movable plate is provided with a connecting rod, the rear die mounting plate is provided with a through hole IV, and the connecting rod is arranged in the through hole IV.
And the first molding insert component and the second molding insert component are both further provided with cooling structures, each cooling structure comprises a plurality of cooling pipelines, and each cooling pipeline is provided with two connecting interfaces.
The guide pillar positioning assembly is further improved and comprises a plurality of guide pillars and a plurality of guide sleeve groups, wherein the guide sleeve groups comprise a plurality of guide sleeves, and the guide sleeves are respectively sleeved on the guide pillars.
Compared with the prior art, the one or more technical schemes in the forming die with the automatic water gate cutting mechanism provided by the embodiment of the utility model have at least one of the following technical effects:
The automatic water cut-off opening is formed by the plurality of water cut-off opening bulges, so that automatic water cut-off opening action is realized on a molded product, automatic cutting-off action is carried out between the molded product and the water gap through the water cut-off opening bulges when a mold is in demolding action, quick separation between the molded product and the water gap is realized, the structure of the automatic water cut-off opening is simple, the efficiency is high, deformation caused by pulling when the molded product falls off is prevented, and the quality and the appearance of the molded product are ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a molding die with an automatic water-break mechanism according to the present embodiment;
FIG. 2 is an exploded view of a molding die with an automatic water shut-off mechanism according to the present embodiment;
Fig. 3 is a schematic structural view of the front mold mounting plate of the present embodiment;
FIG. 4 is a schematic diagram of the front mold insert and the rear mold insert according to the present embodiment;
FIG. 5 is a schematic view of a first embodiment of a molding insert assembly;
Fig. 6 is a schematic structural view of a second insert block of the present embodiment;
Fig. 7 is an enlarged schematic view of a in fig. 6.
Detailed Description
The following description is of the preferred embodiments of the utility model, and is not intended to limit the scope of the utility model.
Referring to fig. 1-7, a forming die 1 with an automatic water gap cutting mechanism comprises a front die assembly 2, a rear die assembly 3, an injection molding assembly 4 and a demolding assembly 5, wherein the injection molding assembly 4 is arranged on the front die assembly 2, a guide pillar positioning assembly 6 is arranged between the front die assembly 2 and the rear die assembly 3, the demolding assembly 5 is arranged on the rear die assembly 3, a positioning and pressing structure 7 is arranged between the front die assembly 2 and the rear die assembly 3, the front die assembly 2 comprises a front die mounting plate 20, a front die pressing plate 21 and a front die core 22, the front die core 22 is connected with the front die pressing plate 21, the front die core 22 comprises two molding insert assemblies one 220, and the two molding insert assemblies one 220 are respectively provided with a glue injection runner structure one 221 and a plurality of positioning inserts one 222;
The rear die assembly 3 comprises a rear die mounting plate 30, a rear die pressing plate 31 and a rear die core 32, wherein the rear die pressing plate 31 is connected with the rear die mounting plate 30, a spacing layer is arranged between the rear die pressing plate 31 and the rear die mounting plate 30, the rear die core 32 is connected with the rear die pressing plate 31, the rear die core 32 comprises two molding insert assemblies II 320, the two molding insert assemblies II 320 are respectively provided with a plurality of positioning molding cavities II 321 and a detachable backing plate 322, and the positioning molding cavities II 321 are respectively provided with an automatic water-cutting port structure 8;
The demolding assembly 5 is arranged in the spacing layer, the demolding assembly 5 comprises a fixed plate 50, a movable plate 51, a spring assembly 52 and an ejector pin assembly 53, the fixed plate 50 is arranged on the rear mold mounting plate 30, the movable plate 51 is arranged above the fixed plate 50, the spring assembly 52 is arranged between the movable plate 51 and the rear mold pressing plate 31, and the ejector pin assembly 53 is arranged on the movable plate 51.
The front die mounting plate 20 is provided with a mounting hole, the front die pressing plate 21 is provided with a glue injection port, the injection molding assembly 4 is arranged in the mounting hole, the injection molding assembly 4 comprises a glue injection connector and a glue injection pipe, the glue injection connector is fixed in the mounting hole, the glue injection pipe is communicated with the glue injection port in a connecting mode, the front die pressing plate 21 is provided with two groups of first glue injection runners 210, the first glue injection runners 210 are communicated with the glue injection port in a connecting mode, and the first glue injection runners 210 are provided with a plurality of glue outlets.
The first molding insert assemblies 220 are all insert plates, the first molding insert assemblies 220 are all provided with a plurality of mounting holes I which are arrayed, a plurality of first positioning inserts 222 are respectively arranged in the mounting holes I, the first positioning inserts 222 are all provided with first molding cavities, the first molding insert assemblies 220 are also provided with two groups of first glue injection port groups 220a, the two groups of first glue injection port groups 220a comprise two opposite glue injection ports, the first glue injection ports are all communicated with the glue outlets of the first glue injection runners 210 in a connecting mode, the first molding insert assemblies 220 are also provided with second glue injection runner groups 220b, the second glue injection runner groups 220b are respectively provided with first glue injection ports in a connecting mode, and the first molding insert assemblies 220 are used for molding the first end portions of molded products.
The second molding insert assembly 320 comprises a second molding insert 320a and a second fixing plate 320b, the second fixing plate 320b is arranged on the rear molding plate 31, the second molding insert 320a is arranged on the second fixing plate 320b, a plurality of second positioning molding cavities 321 are arranged on the second molding insert 320a in an array mode, the second molding insert 320a comprises two oppositely arranged mirror-image second molding inserts 320c, the second positioning molding cavities 321 comprise two oppositely arranged mirror-image positioning molding half cavities 320d, the second positioning molding half cavities 320d are respectively arranged on the second molding insert 320c, the second molding insert 320c is provided with a plurality of glue injection runners three 320e, the glue injection runners three 320e are respectively provided with a glue inlet three and a glue outlet three, the glue inlet three is arranged on the end face of the second molding insert 320c, the glue outlet three is respectively arranged on the inner wall of the second positioning molding half cavity 320d, and the second molding insert 320 is used for molding products.
The automatic water cut-off structure 8 comprises a plurality of water cut-off bulges 80, the water cut-off bulges 80 are respectively arranged on the glue outlet three and are arranged on the inner wall of the positioning molding half cavity two 320d, the water cut-off bulges 80 are provided with a first cutter surface 800 and a second cutter surface 801, a third glue injection port is arranged between the first cutter surface 800 and the second cutter surface 801, and the automatic water cut-off structure is used for automatically cutting off a water gap when a molded product is demoulded, has a simple structure and high efficiency, prevents deformation caused by pulling when the molded product falls off, and ensures the quality and appearance of the molded product.
The detachable backing plate 322 comprises two positioning plates which are arranged in a mirror image first pair, the positioning plates are respectively provided with a plurality of positioning arc openings and a plurality of fourth glue injection openings, and the detachable backing plate 322 is used for adjusting the height of the insert block two 320c according to requirements so as to form insert blocks with different specifications and sizes, so that applicability is improved, and the die sinking cost of a formed product is reduced.
The positioning and compressing structure 7 comprises a central positioning and compressing block 70 and two side positioning and compressing blocks 71, wherein the central positioning and compressing block 70 is arranged on the central axis of the front die pressing plate 21, the two side positioning and compressing blocks 71 are arranged on two sides of the front die pressing plate 21 in a mirror image opposite mode, the second insert block 320c is provided with positioning inclined planes, the two side positioning and compressing blocks 71 on two sides of the central positioning and compressing block 70 are provided with first positioning inclined planes, the first positioning inclined planes are used for being attached to the first positioning inclined planes when being used for die assembly, the positioning and compressing structure 7 is used for ensuring the positioning action of the first molding insert assembly 220 and the second molding insert assembly 320, and ensuring the die assembly and the die assembly closing of the second insert 320c which are arranged in a mirror image opposite mode, and ensuring the quality of subsequent molded products;
The front die pressing plate 21 is further provided with a plurality of first positioning blocks 9, a plurality of first positioning grooves 10 are formed between the two insert blocks 320c, the first positioning blocks 9 are connected with the first positioning grooves 10 in a matched mode, and the first positioning blocks 9 and the first positioning grooves 10 are used for positioning to ensure the positions of the first molding insert assembly 220 and the second molding insert assembly 320.
The ejector pin assembly 53 comprises a plurality of ejector pins, the ejector pins are respectively arranged in the second positioning forming cavity 321, each ejector pin is provided with a stop block, each stop block can move along the direction of the second positioning forming cavity 321, the movable plate 51 is provided with a connecting rod, the rear die mounting plate 30 is provided with a fourth through hole, the connecting rod is arranged in the fourth through hole, and the ejector pin assembly 53 is used for ejecting and demolding a formed product.
The first molding insert component 220 and the second molding insert component 320 are both further provided with a cooling structure 11, the cooling structure 11 comprises a plurality of cooling pipelines, the cooling pipelines are both provided with two connection interfaces, and the cooling structure 11 is used for flowing cooling liquid so as to realize cooling molding actions.
The guide pillar positioning component 6 comprises a plurality of guide pillars and a plurality of guide sleeve groups, wherein the guide sleeve groups comprise a plurality of guide sleeves, the guide sleeves are respectively sleeved on the guide pillars, and the guide pillar positioning component 6 is used for guaranteeing the stability of demolding, mold closing and mold opening actions.
The automatic water cut-off opening is formed by the plurality of water cut-off opening bulges, so that automatic water cut-off opening action is realized on a molded product, automatic cutting-off action is carried out between the molded product and the water gap through the water cut-off opening bulges when a mold is in demolding action, quick separation between the molded product and the water gap is realized, the structure of the automatic water cut-off opening is simple, the efficiency is high, deformation caused by pulling when the molded product falls off is prevented, and the quality and the appearance of the molded product are ensured.
The present utility model is not limited to the above embodiments, and other molding dies for use with automatic water shut-off mechanisms, which are obtained by using the same or similar structures or devices as the above embodiments of the present utility model, are within the scope of the present utility model.
Claims (10)
1. A forming die with an automatic water gap cutting mechanism is characterized by comprising a front die assembly, a rear die assembly, an injection molding assembly and a demolding assembly, wherein the injection molding assembly is arranged on the front die assembly, a guide pillar positioning assembly is arranged between the front die assembly and the rear die assembly, the demolding assembly is arranged on the rear die assembly, a positioning and pressing structure is arranged between the front die assembly and the rear die assembly, the front die assembly comprises a front die mounting plate, a front die pressing plate and a front die core, the front die core is connected with the front die pressing plate, the front die core comprises two first forming insert assemblies, and the first forming insert assemblies are respectively provided with a first glue injection runner structure and a first positioning insert;
The rear die assembly comprises a rear die mounting plate, a rear die pressing plate and a rear die core, wherein the rear die pressing plate is connected with the rear die mounting plate, a spacing layer is arranged between the rear die pressing plate and the rear die mounting plate, the rear die core is connected with the rear die pressing plate, the rear die core comprises two molding insert assemblies II, a plurality of positioning molding cavities II and a detachable backing plate are arranged on the two molding insert assemblies II, and an automatic water-break structure is arranged on the positioning molding cavities II;
The demolding assembly is arranged in the spacing layer and comprises a fixed plate, a movable plate, a spring assembly and a thimble assembly, wherein the fixed plate is arranged on the rear mold mounting plate, the movable plate is arranged above the fixed plate, the spring assembly is arranged between the movable plate and the rear mold pressing plate, and the thimble assembly is arranged on the movable plate.
2. The forming die with the automatic water-break mechanism, which is disclosed in claim 1, is characterized in that the front die mounting plate is provided with a mounting hole, the front die pressing plate is provided with a glue injection port, the injection molding assembly is arranged in the mounting hole, the injection molding assembly comprises a glue injection connector and a glue injection pipe, the glue injection connector is fixed in the mounting hole, the glue injection pipe is communicated with the glue injection port in a connecting way, the front die pressing plate is provided with two groups of first glue injection flow passages, the first glue injection flow passages are all communicated with the glue injection port in a connecting way, and the first glue injection flow passages are all provided with a plurality of glue outlets.
3. The molding die with the automatic water-break mechanism is characterized in that the molding insert assemblies I are insert plates, a plurality of mounting holes I which are arranged in an array mode are formed in the molding insert assemblies I, a plurality of positioning inserts I are respectively arranged in the mounting holes I, first molding cavities are formed in the positioning inserts I, two glue injection port groups I are further formed in the molding insert assemblies I, each glue injection port group I comprises two glue injection ports I which are opposite to each other, each glue injection port I is connected and communicated with a glue outlet of each first glue injection runner, and a second glue injection runner group is further arranged in the molding insert assemblies I and is connected and communicated with each glue injection port I.
4. The forming die with the automatic water-break mechanism, which is disclosed in claim 3, is characterized in that the forming insert assemblies II comprise forming inserts II and fixing plates II, the fixing plates II are arranged on a rear die pressing plate, the forming inserts II are arranged on the fixing plates II, a plurality of positioning forming cavities II are arranged on the forming inserts II in an array mode, the forming inserts II comprise two insert blocks II which are oppositely arranged in mirror images, the positioning forming cavities II comprise two positioning forming half cavities II which are oppositely arranged in mirror images, the positioning forming half cavities are respectively arranged on the insert blocks II, the insert blocks II are provided with a plurality of glue injection flow channels III, the glue injection flow channels III are respectively provided with a glue inlet III and a glue outlet III, the glue inlet III is arranged on the end face of the insert blocks II, and the glue outlet III is respectively arranged on the inner walls of the positioning forming half cavities II.
5. The forming die with the automatic water-break mechanism of claim 4, wherein the automatic water-break mechanism comprises a plurality of water-break protrusions, the water-break protrusions are respectively arranged on the third glue outlet and on the inner wall of the second positioning forming half cavity, the water-break protrusions are provided with a first cutter surface and a second cutter surface, and a third glue injection port is arranged between the first cutter surface and the second cutter surface.
6. The molding die with the automatic water-break mechanism of claim 5, wherein the detachable backing plate comprises two mirror-image positioning plates which are arranged in a first pair, and each positioning plate is provided with a plurality of positioning arc openings and a plurality of fourth glue injection openings.
7. The forming die with the automatic water break mechanism of claim 6, wherein the positioning and compressing structure comprises a central positioning and compressing block and two side positioning and compressing blocks, wherein the central positioning and compressing block is arranged on the central axis of the front die pressing plate, the two side positioning and compressing blocks are arranged on two sides of the front die pressing plate in a mirror image opposite mode, the second insert block is provided with positioning inclined planes, and the two side positioning and compressing blocks of the central positioning and compressing block are provided with positioning inclined planes I which are attached to the positioning inclined planes when being used for die assembly;
The front die pressing plate is also provided with a plurality of first positioning blocks, a plurality of first positioning grooves are formed between the two insert blocks, and the first positioning blocks are connected with the first positioning grooves in a matched mode.
8. The molding die with the automatic water-break mechanism of claim 7, wherein the ejector pin assembly comprises a plurality of ejector pins, the ejector pins are respectively arranged in the second positioning molding cavity, each ejector pin is provided with a stop block, the stop blocks can move along the direction of the second positioning molding cavity, the movable plate is provided with a connecting rod, the rear die mounting plate is provided with a through hole IV, and the connecting rod is arranged in the through hole IV.
9. The molding die with the automatic water-break mechanism of claim 8, wherein the first molding insert component and the second molding insert component are respectively provided with a cooling structure, the cooling structure comprises a plurality of cooling pipelines, and the cooling pipelines are respectively provided with two connecting interfaces.
10. The forming die with the automatic water break mechanism of claim 9, wherein the guide pillar positioning assembly comprises a plurality of guide pillars and a plurality of guide sleeve groups, each guide sleeve group comprises a plurality of guide sleeves, and the guide sleeves are respectively sleeved on the guide pillars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421212059.2U CN222451221U (en) | 2024-05-29 | 2024-05-29 | Forming die with automatic water gap cutting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421212059.2U CN222451221U (en) | 2024-05-29 | 2024-05-29 | Forming die with automatic water gap cutting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222451221U true CN222451221U (en) | 2025-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421212059.2U Active CN222451221U (en) | 2024-05-29 | 2024-05-29 | Forming die with automatic water gap cutting mechanism |
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| Country | Link |
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| CN (1) | CN222451221U (en) |
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- 2024-05-29 CN CN202421212059.2U patent/CN222451221U/en active Active
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