CN220923159U - Mould convenient to at dark chamber installation inserts - Google Patents
Mould convenient to at dark chamber installation inserts Download PDFInfo
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- CN220923159U CN220923159U CN202322667912.1U CN202322667912U CN220923159U CN 220923159 U CN220923159 U CN 220923159U CN 202322667912 U CN202322667912 U CN 202322667912U CN 220923159 U CN220923159 U CN 220923159U
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- 238000009434 installation Methods 0.000 title claims description 24
- 238000005266 casting Methods 0.000 claims abstract description 6
- 230000035515 penetration Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 description 17
- 230000000149 penetrating effect Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
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Abstract
The application discloses a die structure which is convenient for installing an insert in a deep cavity, wherein a rear die core and a front die core are oppositely arranged; the ejection device is arranged below the rear mold core and comprises an ejector pin and a first reset unit, one end of the ejector pin is fixedly connected with the ejection device, the other end of the ejector pin penetrates through the rear mold core to the casting cavity, and two ends of the first reset unit are respectively fixedly connected with the rear mold core and the ejection device; the top block device is movably and penetratingly arranged in the rear mold core, the top block device comprises a straight top unit and a locking unit, one end of the straight top unit is arranged in a deep cavity close to one end of the pouring cavity on the rear mold core, the other end of the straight top unit penetrates through the rear mold core to the bottom, and the locking unit is arranged on the periphery of the straight top unit; the second reset unit is arranged on the front die core and corresponds to the straight top unit. The application has the beneficial effects that the requirement on the operation space of the manipulator is reduced, and the damage to the die caused by the fact that the insert is not installed in place is avoided.
Description
Technical Field
The application relates to the field of insert installation of injection mold products, in particular to a mold facilitating insert installation in a deep cavity.
Background
In the modern industry, molds are commonly used to make shaped articles, and are widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and in the compression molding or injection molding of articles such as engineering plastics, rubber, ceramics, and the like. With the development of the current society, new energy automobiles gradually become a trend. The battery pack accessory of the new energy automobile always needs to consider the firmness of the connecting part while ensuring the insulativity of the product, and people select injection molding plastic for designing the main body of the product to be insulated, and the position for playing the role of connection is a metal product, so that the insert injection molding technology is an effective solution for simultaneously considering the performance. However, in carrying out the insert injection molding process, it is often necessary to consider how to accurately and firmly place the metal insert into the cavity of the present mold prior to injection molding.
To solve this problem, the existing solution is usually implemented with a high-precision manipulator, and the positioning reference is processed in the mold cavity to assist the manipulator in positioning, so as to install the insert. In this way, when the position of the mounting insert is not in a narrow deep cavity, enough free space is available for the robot to move to complete the mounting, either the smaller and more precise robot is replaced to achieve the mounting purpose, or the product structure is selectively adjusted, reducing the product performance. The method can not be well adapted to the installation situation of the inserts in the narrow and deep cavities, can not be adapted to the situation that the requirements on the performance of products are higher and higher at present, and can not meet the requirements.
Disclosure of Invention
In order to solve one of the technical defects, the embodiment of the application provides a mold which is convenient for installing an insert in a deep cavity.
According to a first aspect of an embodiment of the present application, there is provided a mold for facilitating the installation of an insert in a deep cavity, comprising:
The rear die core and the front die core are oppositely arranged;
The ejection device is arranged below the rear die core and comprises a thimble and a first reset unit, one end of the thimble is fixedly connected with the ejection device, the other end of the thimble penetrates through the rear die core to the casting cavity, and two ends of the first reset unit are respectively fixedly connected with the rear die core and the ejection device;
The ejector block device is movably and penetratingly arranged in the rear mold core, the ejector block device comprises a straight ejector unit and a locking unit, one end of the straight ejector unit is arranged in a deep cavity close to one end of the pouring cavity on the rear mold core, the other end of the straight ejector unit penetrates through the rear mold core to the bottom, and the locking unit is arranged on the periphery of the straight ejector unit;
the second reset unit is arranged on the front die core and corresponds to the straight top unit.
Preferably, the straight top unit comprises a straight top block and a straight top rod, the straight top block is arranged in a corresponding deep cavity on the rear mold core, one end of the straight top rod is fixedly connected with the bottom of the straight top block, and the other end of the straight top rod penetrates through the rear mold core to the bottom and the end part of the straight top rod extends outwards continuously.
Preferably, the straight top unit comprises an insert fixing assembly, the insert fixing assembly is fixedly arranged on the upper portion of the straight top block, and the insert fixing assembly comprises a magnet.
Preferably, the second resetting unit comprises a penetrating piece, and the penetrating piece is arranged on the front die core and corresponds to the straight jacking block.
Preferably, the locking unit comprises a first locking component and a second locking component, the first locking component is arranged between the straight ejector block and the rear mold core, and the second locking component is arranged on the periphery of the straight ejector rod and is fixed on the rear mold core.
Preferably, the first locking component comprises a plugging groove and a plugging rod, the plugging groove is fixedly arranged on the rear mold core, the plugging rod is fixedly arranged at a position corresponding to the straight jacking block, the plugging rod can be inserted into the plugging groove, and the first locking component comprises nylon.
Preferably, the second locking component comprises a straight top guide block, a ball screw and a straight rod concave point; the straight top guide blocks are fixedly arranged on the periphery of the straight top rod, the ball screws are fixedly arranged on the straight top guide blocks, the straight top rod is provided with a plurality of straight rod pits, and the ball screws can be clamped into the straight rod pits.
Preferably, the ejection device comprises a limiting block, a top plate and a bottom plate, wherein the limiting block is fixedly arranged on the upper surface of the top plate, and the bottom plate is arranged below the top plate.
Preferably, the first reset unit comprises an ejection spring, one end of the ejection spring is connected with the rear mold core, and the other end of the ejection spring is connected with the top plate.
Compared with the prior art, the method has the following beneficial effects: the scheme adopts the form of 'ejection-insert installation-reset', utilizes the ejector block device, the ejector device and the reset device which are movably arranged in the rear mold core in a penetrating way, ejects the ejector block device firstly through the ejector device, then installs the insert by the manipulator, and resets the ejector block device, thereby solving the problem of how to install the insert in the deep cavity of the mold more accurately and firmly. Compared with the prior art, the insert mounting difficulty is greatly reduced, the operation space requirement on the manipulator is reduced, and the situation that the die is damaged due to the fact that the insert is not mounted in place is avoided.
Drawings
FIG. 1 is a schematic diagram of an explosion structure according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present application;
Fig. 3 is a schematic structural diagram of a top block device according to an embodiment of the present application.
In the figure:
1. A front mold core; 110. a second reset unit; 111. a strike-through member;
2. A rear mold core; 210. a deep cavity;
3. An ejector device; 310. a thimble; 320. a first reset device; 321. an ejector spring; 330. a limiting block; 340. a top plate; 350. a bottom plate;
4. A top block device; 410. a straight top unit; 411. a straight top block; 412. a straight ejector rod; 413. an insert-fixing assembly; 420. a locking unit; 430. a first locking assembly; 431. a plug-in groove; 432. inserting a connecting rod; 440. a second locking assembly; 441. a straight top guide block; 442. ball screw; 443. pits of the straight rod;
5. an insert; 6. and (5) a product.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
FIG. 1 is a schematic diagram of an explosion structure according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present application;
Fig. 3 is a schematic structural diagram of a top block device according to an embodiment of the present application.
As shown in fig. 1 to 3, the embodiment of the present application provides a mold for facilitating the installation of inserts in deep cavities, a rear mold core 2 and a front mold core 1 being disposed opposite to each other;
The ejection device 3 is arranged below the rear mold core 2, the ejection device 3 comprises an ejector pin 310 and a first reset unit 320, one end of the ejector pin 310 is fixedly connected with the ejection device 3, the other end penetrates through the rear mold core 2 to the casting cavity, and two ends of the first reset unit 320 are respectively fixedly connected with the rear mold core 2 and the ejection device 3;
The top block device 4 is movably and penetratingly arranged in the rear mold core 2, the top block device 4 comprises a straight top unit 410 and a locking unit 420, one end of the straight top unit 410 is arranged in a deep cavity 210 near one end of the casting cavity on the rear mold core 2, the other end of the straight top unit penetrates through the rear mold core 2 to the bottom, and the locking unit 420 is arranged on the periphery of the straight top unit 410;
The second reset unit 110 is disposed on the front mold core 1 and corresponds to the straight top unit 410.
In practice, before injection molding, the ejector device 3 ejects upwards under the action of the injection molding machine to drive the ejector pin 310 to eject upwards for a certain distance, then the ejector device 3 begins to contact the bottom of the straight-top unit 410, so that the straight-top unit 410 is ejected out of the deep cavity 210 after overcoming the tension of the locking unit 420, then the straight-top unit 410 is fixed again under the action of the locking device, and at the moment, the end part of the straight-top unit 410 protrudes out of the upper peripheral surface of the rear mold core 2 and is approximately parallel to the mold opening surface, so that a movable space is provided for mechanical manual operation; after the manipulator installs the insert 5 on the ejector block device 4, the second reset unit 110 is utilized to reset and eject the straight ejector unit 410 into the deep cavity 210, and the ejector device 3 is reset under the action of the first reset unit 320;
After injection molding is finished, the mold is opened, ejection begins, the ejector device 3 drives the ejector pin 310 under the ejection action of the injection molding machine, the ejector pin 310 drives the product 6 to be ejected upwards, the lower end of the straight ejection unit 410 is kept at a rear mold and is not moved, the product 6 drives the insert 5 to be separated from the top end of the straight ejection unit 410, then the ejector device 3 contacts the bottom of the straight ejection unit 410, the straight ejection unit 410 ejects the deep cavity 210 upwards after overcoming the tensile force of the locking unit 420, then the straight ejection unit 410 is fixed again under the action of the locking unit 420, at the moment, the end part of the straight ejection unit 410 protrudes out of the surface of the upper periphery of the rear mold core 2 and is approximately parallel to the mold opening surface, a mechanical arm firstly picks up a piece, and then the insert 5 required by injection molding of the next mold product 6 is filled; so far, the process from filling the insert 5 to injection molding is completed; if the production is stopped, a new insert 5 is not installed, and the mold is maintained.
The embodiment of the application provides a mold for conveniently installing an insert in a deep cavity, wherein the straight top unit 410 comprises a straight top block 411 and a straight top rod 412, the straight top block 411 is arranged on the rear mold core 2 corresponding to the deep cavity 210, one end of the straight top rod 412 is fixedly connected with the bottom of the straight top block 411, and the other end penetrates through the rear mold core 2 to the bottom and the end part of the straight top rod extends outwards continuously.
In implementation, the shape of the straight ejector block 411 is attached to the deep cavity 210 at a corresponding position on the rear mold core 2, the bottom of the straight ejector block 411 is fixedly connected with the straight ejector rod 412, the straight ejector rod 412 can cooperate with the ejector device 3 to eject the straight ejector block 411 out of the deep cavity 210, and meanwhile, the locking unit 420 is disposed on the straight ejector block 411, so that the straight ejector unit 410 can be fixed at different positions.
Embodiments of the present application provide a mold for facilitating the installation of an insert in a deep cavity, the straight top unit 410 includes an insert fixing assembly 413, the insert fixing assembly 413 is fixedly disposed at an upper portion of the straight top block 411, and the insert fixing assembly 413 includes a magnet.
In practice, a robot may mount the insert 5 on the insert-holding assembly 413, and when the insert-holding assembly 413 includes a magnet, the insert 5 may be attracted to the magnet.
The embodiment of the application provides a mold for facilitating insert installation in a deep cavity, wherein the second reset unit 110 comprises a penetrating member 111, and the penetrating member 111 is disposed on the front mold core 1 at a position corresponding to the straight top block 411.
In practice, the penetrating member 111 is a protruding member fixed at a corresponding position on the front mold core 1, and the penetrating position is reserved at a position of the straight top block 411 corresponding to the penetrating member 111 on the front mold core 1. The strike 111 is caused to restore the straight top block 411 into the deep cavity 210 under the clamping force during clamping.
The embodiment of the present application provides a mold for facilitating the installation of inserts in deep cavities, wherein the locking unit 420 comprises a first locking assembly 430 and a second locking assembly 440, the first locking assembly 430 is disposed between the straight top block 411 and the rear mold core 2, and the second locking assembly 440 is disposed at the outer circumference of the straight top bar 412 and is fixed on the rear mold core 2.
In practice, the second locking assembly 440 may fix the position of the straight top unit 410 when the straight top unit 410 is ejected out of the deep cavity 210 by the ejector 3, so that the robot may more stably mount the insert 5 on the straight top unit 410. After the insert 5 is installed, under the action of the second reset unit 110, the straight top unit 410 is reset to the deep cavity 210, and at this time, the first locking assembly 430 and the second locking assembly 440 lock the position of the straight top unit 410 at this time, so that the position of the straight top unit 410 is fixed in the injection molding process, shake of the straight top unit 410 in the injection molding process is avoided, quality of the product 6 is improved, and damage of a mold is avoided.
The embodiment of the application provides a mold for facilitating the installation of inserts in deep cavities, the first locking component 430 comprises a plugging groove 431 and a plugging rod 432, the plugging groove 431 is fixedly arranged on the rear mold core 2, the plugging rod 432 is fixedly arranged at a position corresponding to the straight jacking block 411, the plugging rod 432 can be inserted into the plugging groove 431, and the first locking component 430 comprises nylon.
In practice, the first locking assembly 430 adopts a plugging groove 431 and a plugging rod 432, after the vertical top unit 410 is reset, the plugging rod 432 can be inserted into the plugging groove 431, and the position of the vertical top unit 410 in the deep cavity 210 is fixed by the friction force between the plugging groove 431 and the plugging rod 432. In addition, the position of the straight top unit 410 may be fixed by fastening, bolting, or bonding.
Embodiments of the present application provide a mold that facilitates installation of inserts in deep cavities, the second locking assembly 440 comprising a straight top guide block 441, a ball screw 442, and a straight bar recess 443; the plurality of straight top guide blocks 441 are fixedly arranged on the periphery of the straight top rod 412, the plurality of ball screw 442 are fixedly arranged on the straight top guide blocks 441, the straight top rod 412 is provided with a plurality of straight rod pits 443, and the ball screw 442 can be clamped into the straight rod pits 443.
In practice, the straight bar concave points 443 are disposed on the straight top rod 412 at positions corresponding to the ball screw 442, and after the straight top unit 410 is ejected out of the deep cavity 210, the ball screw 442 is just clamped into the straight bar concave points 443, so as to fix the position of the straight top unit 410 at this time, thereby facilitating the installation of the insert 5 by the manipulator. After the straight top unit 410 returns to the deep cavity 210 for resetting, the ball screw 442 is just clamped into the straight rod concave 443, and the position of the straight top unit 410 is fixed in cooperation with the first locking component 430, so that the position of the straight top unit 410 is fixed in the injection molding process.
The embodiment of the application provides a mold for facilitating insert installation in a deep cavity, wherein the ejection device 3 comprises a limiting block 330, a top plate 340 and a bottom plate 350, the limiting block 330 is fixedly arranged on the upper surface of the top plate 340, and the bottom plate 350 is arranged below the top plate 340.
In practice, in the mold closing process, the injection molding machine moves the top plate 340 and the bottom plate 350 upward, drives the ejector pins 310 and the straight ejector units 410 to eject upward, and stops ejection after the stopper 330 contacts with the bottom plate 350 of the rear mold insert 2, thereby controlling the ejection degree. Other limiting means may be used to control the ejection distance of the ejector 3.
The embodiment of the present application provides a mold for facilitating the installation of an insert in a deep cavity, wherein the first restoring unit 320 includes an ejector spring 321, one end of the ejector spring 321 is connected to the rear mold core 2, and the other end is connected to the top plate 340.
In practice, when the mechanical arm installs the insert 5, the ejector 3 starts to reset, and the ejector 3 moves backward under the action of the ejector spring 321 until the ejection reset is completed. The first resetting unit 320 may also use other elastic members, or use the opening and closing of the injection molding machine to drive the ejector 3 to reset.
The embodiment of the application also provides a mould with a deep cavity, wherein the ejector block device 4 is movably and penetratingly arranged in the rear mould core 2 and is used for receiving the insert 5;
The ejection device 3 is arranged below the rear mold core 2 and is used for partially ejecting the ejector block device 4 out of a deep cavity 210 arranged in the mold;
The second resetting unit 110 is disposed on the front mold core 1 and corresponds to the ejector device 4, and is configured to reset the ejected ejector device 4.
In implementation, the insert 5 is received by using the ejector device 4 and can run through the rear mold core 2, the ejector device 3 ejects the ejector device 4 out of the deep cavity 210, so that a manipulator is convenient to mount the insert 5, and then the second reset unit 110 pushes the ejected ejector device 4 into the deep cavity 210 for reset, and then injection molding is performed.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. A mold for facilitating installation of an insert in a deep cavity, comprising:
The rear die core and the front die core are oppositely arranged;
The ejection device is arranged below the rear die core and comprises a thimble and a first reset unit, one end of the thimble is fixedly connected with the ejection device, the other end of the thimble penetrates through the rear die core to the casting cavity, and two ends of the first reset unit are respectively fixedly connected with the rear die core and the ejection device;
The ejector block device is movably and penetratingly arranged in the rear mold core, the ejector block device comprises a straight ejector unit and a locking unit, one end of the straight ejector unit is arranged in a deep cavity close to one end of the pouring cavity on the rear mold core, the other end of the straight ejector unit penetrates through the rear mold core to the bottom, and the locking unit is arranged on the periphery of the straight ejector unit;
the second reset unit is arranged on the front die core and corresponds to the straight top unit.
2. The mold for facilitating the installation of inserts in deep cavities according to claim 1, wherein the straight ejector unit comprises a straight ejector block and a straight ejector rod, the straight ejector block is arranged on the rear mold core corresponding to the deep cavity, one end of the straight ejector rod is fixedly connected with the bottom of the straight ejector block, and the other end of the straight ejector rod penetrates through the rear mold core to the bottom and the end part of the straight ejector rod extends outwards continuously.
3. The mold for facilitating the installation of an insert in a deep cavity according to claim 2, wherein the straight top unit comprises an insert fixing assembly fixedly provided on an upper portion of the straight top block, the insert fixing assembly comprising a magnet.
4. The mold for facilitating the installation of inserts in a deep cavity according to claim 2, wherein the second restoring unit comprises a penetration member provided on the front mold core at a position corresponding to the straight top block.
5. The mold for facilitating the installation of inserts in deep cavities according to claim 2, wherein the locking unit comprises a first locking assembly and a second locking assembly, the first locking assembly is disposed between the straight ejector block and the rear mold core, and the second locking assembly is disposed at the outer periphery of the straight ejector rod and is fixed on the rear mold core.
6. The mold for facilitating the installation of inserts in a deep cavity according to claim 5, wherein the first locking assembly comprises a plugging groove and a plugging rod, the plugging groove is fixedly arranged on the rear mold core, the plugging rod is fixedly arranged at a position corresponding to the straight jacking block, and the plugging rod can be inserted into the plugging groove.
7. A mold for facilitating the installation of inserts in a deep cavity as defined in claim 5, wherein the second locking assembly comprises a straight top guide block, a ball screw, and a straight bar recess; the straight top guide blocks are fixedly arranged on the periphery of the straight top rod, the ball screws are fixedly arranged on the straight top guide blocks, the straight top rod is provided with a plurality of straight rod pits, and the ball screws can be clamped into the straight rod pits.
8. The mold for facilitating the installation of inserts in a deep cavity according to claim 1, wherein the ejector comprises a stopper, a top plate and a bottom plate, the stopper is fixedly arranged on the upper surface of the top plate, and the bottom plate is arranged below the top plate.
9. The mold for facilitating the installation of inserts in a deep cavity according to claim 8, wherein the first restoring unit comprises an ejector spring having one end connected to the rear mold core and the other end connected to the top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667912.1U CN220923159U (en) | 2023-09-28 | 2023-09-28 | Mould convenient to at dark chamber installation inserts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322667912.1U CN220923159U (en) | 2023-09-28 | 2023-09-28 | Mould convenient to at dark chamber installation inserts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220923159U true CN220923159U (en) | 2024-05-10 |
Family
ID=90934466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322667912.1U Active CN220923159U (en) | 2023-09-28 | 2023-09-28 | Mould convenient to at dark chamber installation inserts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220923159U (en) |
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2023
- 2023-09-28 CN CN202322667912.1U patent/CN220923159U/en active Active
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