CN214217320U - Automatic overturning and clamping cage entering system for tires - Google Patents
Automatic overturning and clamping cage entering system for tires Download PDFInfo
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- CN214217320U CN214217320U CN202023282679.8U CN202023282679U CN214217320U CN 214217320 U CN214217320 U CN 214217320U CN 202023282679 U CN202023282679 U CN 202023282679U CN 214217320 U CN214217320 U CN 214217320U
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Abstract
The utility model discloses an automatic tire overturning, clamping and cage entering system, which relates to the technical field of tire production equipment and comprises a main body outer frame, wherein an overturning device is arranged below the main body outer frame and is used for being butted with a tire conveying line and overturning a tire from the tire conveying line; an upper frame is arranged above the main body outer frame, the upper frame is arranged above the main body outer frame in a sliding mode, a lower frame is arranged below the upper frame, and a clamping and holding device is arranged on the lower frame and used for clamping and holding a tire; and the upper frame is provided with a lifting system, and the lifting system is connected with the lower frame and is used for driving the lower frame to move up and down. The utility model discloses simple structure, the cost is lower relatively, stability when can improving the underframe and go up and down moreover.
Description
Technical Field
The utility model relates to a tire production facility technical field especially relates to an automatic upset clamp of tire is got and is gone into cage system.
Background
With the development of industrial automation processes, more and more factories realize automation pipelines. The tire production industry, as a traditional industrial form, has also gradually started the whole workshop automated assembly line mode. Under the traditional mode, finished tire rolls off the production line and is passed through fork truck pile up neatly by the workman, has the problem that work efficiency is low. In order to improve the working efficiency and reduce the labor intensity of workers, the tire offline should be automated.
In the prior art, a typical tire off-line system operating mode is as follows: the whole pile of tires is conveyed to the turnover device through the roller line, the turnover device is pushed by the two cylinders to turn over the whole pile of tires, after the whole pile of tires is turned over through the turnover device, the whole pile of tires is clamped by the clamping and holding device and is driven by the ball screw, the tires are vertically lifted under the guidance of the guide shaft, the left clamping and holding device and the right clamping and holding device push the tires to be clamped and held under the guidance of the two cylinders, the whole tire vertically ascends and horizontally moves to the upper part of the conveying line, the left clamping and holding device and the right clamping and holding device are driven by the ball screw to descend to the proper position under the guidance of the guide shaft, the two cylinders loosen the clamps and hold the tires, and the tires are placed in the goods cage to be conveyed to the lower line.
Although the above-mentioned tire offline system improves the tire offline efficiency and reduces the labor intensity of workers, there still exist certain technical defects, such as: the turnover device is pushed by two large cylinders, has low operation stability, poor controllability and no positioning precision, and can be positioned only by machinery. For another example: the vertical motion of the existing device adopts a mode that a speed reduction motor drives a ball screw, the manufacturing cost is high, and the linear bearing and a guide shaft are adopted for guiding, so that the requirement on the precision of the machining position degree is very high, otherwise, the problem that the installation is not good can be caused.
Therefore, it is highly desirable to develop an automatic tire turning and clamping cage system to solve the above problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic upset clamp of tire is got into cage system to solve the above-mentioned problem that prior art exists, simple structure, the cost is lower relatively, stability when can improving the underframe and go up and down moreover.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a tire automatic overturning and clamping cage entering system, which comprises a main body outer frame, wherein an overturning device is arranged below the main body outer frame and is used for butting with a tire conveying line and overturning a tire from the tire conveying line; an upper frame is arranged above the main body outer frame, the upper frame is arranged above the main body outer frame in a sliding mode, a lower frame is arranged below the upper frame, and a clamping and holding device is arranged on the lower frame and used for clamping and holding a tire; and the upper frame is provided with a lifting system, and the lifting system is connected with the lower frame and is used for driving the lower frame to move up and down.
Preferably, the lifting system is a belt lifting system and comprises a lifting speed reduction motor, a belt wheel and a belt, the lifting speed reduction motor is installed on the upper frame, the belt wheel is installed on an output shaft of the lifting speed reduction motor, the top end of the belt is wound on the belt wheel, and the bottom end of the belt is connected with the lower frame.
Preferably, the number of the belt wheels is two, the two belt wheels are respectively and symmetrically arranged on two sides of the lifting speed reduction motor, and each belt wheel is connected with the lower frame through a belt.
Preferably, the device also comprises a guide assembly, wherein the guide assembly comprises a guide shaft and a guide wheel box, and the guide wheel box is arranged on the upper frame; a guide wheel set is installed in the guide wheel box and comprises two guide wheels arranged at intervals, and a guide gap for clamping the guide shaft is formed between the two guide wheels; the bottom end of the guide shaft is connected with the lower frame, and the top end of the guide shaft penetrates through the guide gap and is in rolling contact with the guide wheel.
Preferably, a guide wheel groove matched with the guide shaft in shape is formed in the outer edge surface of the guide wheel, and the guide wheel is mounted in the guide wheel box through a bolt;
at least two groups of guide wheel sets are arranged in each guide wheel box at intervals in the vertical direction;
the guide wheel boxes are four and are respectively arranged at four corners of the upper frame, and the guide shafts are correspondingly provided with four guide wheel boxes.
Preferably, a slide rail is arranged on the outer frame of the main body, a bearing wheel is arranged on the upper frame, and the upper frame is arranged on the slide rail in a sliding manner through the bearing wheel; an upper frame speed reducing motor is further arranged on the outer frame of the main body and drives the upper frame to move through a synchronous belt.
Preferably, the clamping and holding device comprises a left clamping and holding device and a right clamping and holding device, and the left clamping and holding device and the right clamping and holding device are driven by a clamping and holding cylinder.
Preferably, the turnover device comprises a turnover base and a turnover frame, a turnover shaft is rotatably mounted on the turnover base, the turnover shaft is in power connection with a turnover motor, a turnover seat is sleeved on the turnover shaft, and the turnover frame is fixedly arranged on the turnover seat.
Preferably, the roll-over stand comprises a butt joint assembly and a roll-over limiting support body, one side of the roll-over limiting support body is fixedly connected with the butt joint assembly, the other side of the roll-over limiting support body is fixedly provided with a cylinder mounting frame, a chuck plate cylinder is fixedly arranged on the cylinder mounting frame, a chuck plate is arranged on a cylinder shaft of the chuck plate cylinder, and the chuck plate cylinder drives the chuck plate to move towards or back to the butt joint assembly.
Preferably, the overturning motor is a speed reduction motor.
The utility model discloses following beneficial technological effect has been gained for prior art:
the utility model discloses turning device adopts gear motor to pass through the trip shaft and drives the turning device upset, simple structure, and is reliable, and gear motor response speed is fast, can carry out accurate control to speed, position, moment, and the upset is both stable and accurate when targetting in place. The vertical motion is realized by the belt wheel rotation of lifting gear motor through the axle drive, through the belt, simple structure, and the cost is lower relatively. In addition, the four guide wheel boxes respectively penetrate through one guide shaft to realize guide, and the guide wheel box is simple in structure and low in cost. Meanwhile, four guide wheels are arranged in each guide wheel box, and the position of each guide wheel is adjustable, so that the requirements on the machining position degree and the machining precision are greatly reduced, and the machining cost is reduced.
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 creative efforts.
Fig. 1 is a schematic structural view of an automatic tire overturning, clamping and cage entering system of the present invention;
fig. 2 is a schematic structural view of the clamping device of the present invention;
FIG. 3 is an exploded view of the middle guide wheel box of the present invention;
fig. 4 is a schematic structural view of the turning device of the present invention;
reference numerals: the device comprises a main body outer frame 1, an upper frame 2, a lower frame 3, a lifting speed reduction motor 4, belt wheels 5, a guide shaft 6, a guide wheel box 7, guide wheels 8, a turnover base 9, a turnover shaft 10, a turnover motor 11 and a turnover frame 12.
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 the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1 to 4, the present embodiment provides an automatic tire turning and clamping cage entering system, which is used for realizing the offline and transfer of tires from a tire conveying line (roller conveyor).
The automatic upset of this embodiment tire is got into cage system mainly includes main part outer frame 1, and main part outer frame 1 adopts the metal section to make, and main part outer frame 1 wholly adopts cuboid frame construction, and the whole height of main part outer frame 1 designs according to the height of the transfer chain of two differences (or the height between two transfer points of tire) to realize the off-line and the transfer of tire.
In the embodiment, a turning device is arranged below the main body outer frame 1, the turning device is used for turning the tire (from a vertical stacking state to a flat lying state), and an upper frame 2 which is in sliding fit with the main body outer frame 1 is arranged above the main body outer frame 1; specifically, a slide rail is arranged on the top surface of the main body outer frame 1, a bearing wheel is arranged on the upper frame 2, the bearing wheel is arranged on the slide rail in a sliding manner, and the upper frame 2 can reciprocate on the top surface of the main body outer frame 1 through the bearing wheel and the slide rail; an upper frame speed reducing motor is also arranged on the top surface of the main body outer frame 1 and is connected with the upper frame 2 through a synchronous belt to drive the upper frame to move; the upper frame 2 is made of metal section.
In this embodiment, the below of upper ledge 2 is provided with underframe 3, underframe 3 can carry out the up-and-down motion in main part outer frame 1, be provided with on underframe 3 and adopt the clamp to embrace the clamp of mode transportation tire and embrace the device, press from both sides to embrace the device including the left side and press from both sides and embrace the device and the right side and press from both sides and embrace the device, the left side is pressed from both sides and is embraced the device and press from both sides the device with the right side and all be connected with one and press from both sides and embrace the cylinder, embrace the cylinder through pressing from both sides and provide power, the drive left side is pressed from both sides and is embraced device and the right side and press from both sides and embrace the device side-to move, can clip the tire and fix the tire from the left and right sides, thereby make the tire can follow turning device and shift to other station department. As shown in fig. 2, the left clamping device and the right clamping device have the same structure and both comprise a mounting frame, the top of the mounting frame is slidably mounted on a guide rail of the lower frame 3, a clamping plate consisting of a plurality of columnar structures is arranged below the mounting frame, and the clamping and fixing of the tire are realized through the two clamping plates; or the left clamping and holding device and the right clamping and holding device can select other structures according to the working requirement.
In the prior art, the lower frame moves up and down relative to the upper frame through the screw rod system, the screw rod system is complex in structure composition, high in manufacturing precision requirement, easy to damage in the using process and high in maintenance cost.
In this embodiment, for many structural defects of the screw system, the following optimization design is proposed in this embodiment: the upper frame 2 is provided with a belt lifting system, and the lower frame 3 is driven by the belt lifting system to lift up and down relative to the upper frame 2 in the height direction. Specifically, belt operating system is including going up and down gear motor 4, and power connection has band pulley 5 on the output shaft of going up and down gear motor 4, has the belt with band pulley 5 cooperation, and the one end of belt twines on band pulley 5, and the other end and the underframe 3 of belt are connected. Furthermore, two belt wheels 5 can be arranged, the two belt wheels 5 are respectively symmetrically arranged on two sides of the lifting speed reducing motor 4, two output shafts are respectively connected to two sides of the lifting speed reducing motor 4, and the two belt wheels 5 are respectively arranged on the two output shafts; each pulley 5 is connected to the lower frame 3 by a belt.
After the belt lifting system is adopted, in order to improve the lifting stability of the lower frame 3, the embodiment further provides a guide assembly, and the guide assembly comprises a guide shaft 6 which is vertically arranged and fixedly arranged relative to the upper frame 2 and a guide wheel box 7 which is in sliding fit with the guide shaft 6. Specifically, the guide members are provided in at least two groups, and in the present embodiment, the guide members are provided in four groups and are respectively disposed near four corner positions of the upper frame 2.
Specifically, the guide wheel box 7 is internally provided with two guide wheels 8, the two guide wheels 8 are in a group, two guide wheels 8 in the same group are arranged at intervals and are formed with guide gaps for clamping the guide shaft 6, and the guide shaft 6 penetrates through the guide gaps and is in rolling contact with the guide wheels 8. Furthermore, a guide wheel groove matched with the shape of the guide shaft 6 is arranged on the outer edge surface of the guide wheel 8; at least two groups of guide wheels 8 are arranged in the same guide wheel box 7 at intervals in the vertical direction.
In this embodiment, the belt wheels 5 are driven to rotate by the deceleration lifting motor 4 fixedly arranged on the upper frame 2, a belt is respectively fixed on each of the two belt wheels 5, and the deceleration lifting motor 4 rotates to drive the lower frame 3 connected through the belt to vertically lift. Meanwhile, four guide wheel boxes 7 are arranged on the upper frame 2, and four guide shafts 6 respectively penetrate through the four guide wheel boxes 7 to realize vertical lifting guide. The speed reduction lifting motor 4 directly lifts the lower frame 3 through a belt, and has the advantages of simple structure, lower cost, higher use reliability and lower requirement on the structural precision of the lifting structure component.
In this embodiment, each guide wheel box 7 is integrally adjustable, two groups of four guide wheels 8 are arranged in each guide wheel box 7, and each guide wheel 8 is installed in the guide wheel box 7 through a bolt, so that each guide wheel 8 is relatively adjustable, the phenomenon of different strength caused by machining errors is prevented, and the requirement on the machining position degree of the upper frame 2 and the lower frame 3 is greatly reduced.
In this embodiment, as shown in fig. 4, the turnover device includes a turnover base 9, a turnover shaft 10 is disposed on the turnover base 9, the turnover shaft 10 is power-connected to a turnover motor 11, the turnover motor 11 is mounted on one side of the turnover base 9, and the turnover shaft 10 is driven to rotate by the power provided by the turnover motor 11; the overturning shaft 10 is provided with an overturning frame 12 capable of overturning along with the overturning shaft, the overturning frame 12 comprises a butt joint assembly and an overturning limiting frame body, the butt joint assembly is in butt joint with the roller conveyor, one side of the overturning limiting frame body is fixedly connected with the butt joint assembly, the other side of the overturning limiting frame body is fixedly provided with a cylinder mounting frame, a chuck cylinder is fixedly arranged on the cylinder mounting frame, a chuck is arranged on a cylinder shaft of the chuck cylinder, and the chuck can move towards the butt joint assembly or back to the roller type conveying butt joint assembly under the action of the chuck cylinder; in this embodiment, the structure below the turnover limiting frame body is a docking assembly, the docking assembly may include two side supporting plates at both sides, and a plurality of roll shafts are installed between the two side supporting plates; alternatively, the docking assembly may select other docking configurations depending on the operational needs.
Further, the overturning motor 11 is a speed reducing motor, the overturning shaft 10 is rotatably installed on the overturning base 9 through a bearing with a seat, two overturning seats connected with the overturning shaft 10 in a key mode are sleeved on the overturning shaft 10, and the overturning frame 12 is fixedly arranged on the two overturning seats.
In the embodiment, the speed reducing motor is adopted to drive the turnover device to turn over through the turnover shaft 10, the speed reducing motor has high response speed, and the speed, the position and the torque can be accurately controlled; the vertical motion is realized going up and down by lifting gear motor 4 drive belt, simple structure adopts four leading wheel casees 7 and guiding axle 6 to lead in addition, simple structure, adjustable, very big reduction the requirement of processing position degree and precision.
In this embodiment, turning device is carried by the cylinder conveyer to whole buttress tire, and gear motor drives the cylinder and rotates to drive whole buttress tire and carry the back that targets in place, the (holding) chuck cylinder drives the (holding) chuck and compresses tightly whole buttress tire, and turning device drives trip shaft 10 by gear motor and rotates, and trip shaft 10 drives the upset seat through the key-type connection and rotates, thereby drives roll-over stand 12 and realizes the upset. At this time, the upper frame 2 is driven by the upper frame speed reducing motor through synchronous belt transmission, and moves horizontally on the main body outer frame 1 to the right above the turnover device through the bearing wheel, then the lifting speed reducing motor 4 on the upper frame 2 drives the belt wheel 5 to rotate through the output shaft, the lower frame 3 is driven by the belt to vertically descend, and simultaneously the guide shaft 6 passes through the guide wheel box 7 to conduct vertical descending guide.
After the lower frame 3 descends to the right position, the left clamping device and the right clamping device fixed on the lower frame 3 move and clamp tightly; specifically, the left clamping and holding device is driven by a left clamping and holding cylinder, the right clamping and holding device is driven by a right clamping and holding cylinder, and the two clamping and holding cylinders act simultaneously to clamp and hold the tire. At the moment, the chuck cylinder is loosened, the lower frame 3 is vertically lifted under the driving of the lifting speed reduction motor 4 and the belt, after the lower frame is lifted in place, the upper frame 2 is horizontally moved to the position right above the tire cargo cage conveying line under the driving of the upper frame speed reduction motor and the synchronous belt, then the lower frame 3 is vertically lowered in place again, the left clamping cylinder and the right clamping cylinder act simultaneously to drive the left clamping device and the right clamping device to be opened simultaneously, and tires are placed in the cargo cage to be conveyed to the lower line.
To sum up, the utility model adopts the speed reducing motor to drive the turnover device to turn over through the turnover shaft 10, has simple and reliable structure and fast response speed of the speed reducing motor, can accurately control the speed, the position and the moment, and is stable and accurate when the turnover is in place; the belt wheel 5 is driven to rotate by the lifting speed reducing motor 4 through an output shaft in vertical movement, vertical lifting is realized through a belt, the structure is simple, and the cost is relatively low; in addition, the four guide wheel boxes 7 respectively penetrate through one guide shaft 6 to realize guide, so that the structure is simple, and the cost is low; meanwhile, four guide wheels 8 are arranged in each guide wheel box 7, and the position of each guide wheel 8 is adjustable, so that the requirements on machining position degree and precision are greatly reduced, and the machining cost is reduced.
It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. The automatic tire overturning, clamping and cage entering system comprises a main body outer frame, wherein an overturning device is arranged below the main body outer frame and used for being in butt joint with a tire conveying line and overturning tires from the tire conveying line; the method is characterized in that: an upper frame is arranged above the main body outer frame, the upper frame is arranged above the main body outer frame in a sliding mode, a lower frame is arranged below the upper frame, and a clamping and holding device is arranged on the lower frame and used for clamping and holding a tire; and the upper frame is provided with a lifting system, and the lifting system is connected with the lower frame and is used for driving the lower frame to move up and down.
2. The tire automatic turning over gripper entry cage system of claim 1, wherein: the lifting system is a belt lifting system and comprises a lifting speed reduction motor, a belt wheel and a belt, the lifting speed reduction motor is installed on the upper frame, the belt wheel is installed on an output shaft of the lifting speed reduction motor, the top end of the belt is wound on the belt wheel, and the bottom end of the belt is connected with the lower frame.
3. The tire automatic turning over gripper entry cage system of claim 2, wherein: the belt pulleys are arranged on two sides of the lifting speed reduction motor, and are symmetrically arranged on two sides of the lifting speed reduction motor respectively, and each belt pulley is connected with the lower frame through a belt.
4. The tire automatic turning over gripper entry cage system of claim 1, wherein: the guide assembly comprises a guide shaft and a guide wheel box, and the guide wheel box is arranged on the upper frame; a guide wheel set is installed in the guide wheel box and comprises two guide wheels arranged at intervals, and a guide gap for clamping the guide shaft is formed between the two guide wheels; the bottom end of the guide shaft is connected with the lower frame, and the top end of the guide shaft penetrates through the guide gap and is in rolling contact with the guide wheel.
5. The tire automatic turning over gripper entry cage system of claim 4, wherein: a guide wheel groove matched with the guide shaft in shape is formed in the outer edge surface of the guide wheel, and the guide wheel is installed in the guide wheel box through a bolt;
at least two groups of guide wheel sets are arranged in each guide wheel box at intervals in the vertical direction;
the guide wheel boxes are four and are respectively arranged at four corners of the upper frame, and the guide shafts are correspondingly provided with four guide wheel boxes.
6. The tire automatic turning over gripper entry cage system of claim 1, wherein: a slide rail is arranged on the outer frame of the main body, a bearing wheel is arranged on the upper frame, and the upper frame is arranged on the slide rail in a sliding manner through the bearing wheel; an upper frame speed reducing motor is further arranged on the outer frame of the main body and drives the upper frame to move through a synchronous belt.
7. The tire automatic turning over gripper entry cage system of claim 1, wherein: the clamping and holding device comprises a left clamping and holding device and a right clamping and holding device, and the left clamping and holding device and the right clamping and holding device are driven by a clamping and holding cylinder.
8. The tire automatic turning over gripper entry cage system of claim 1, wherein: the turnover device comprises a turnover base and a turnover frame, a turnover shaft is rotatably mounted on the turnover base, the turnover shaft is in power connection with a turnover motor, a turnover seat is sleeved on the turnover shaft, and the turnover frame is fixedly arranged on the turnover seat.
9. The tire automatic turning over gripper entry cage system of claim 8, wherein: the overturning frame comprises a butt joint assembly and an overturning limiting frame body, one side of the overturning limiting frame body is fixedly connected with the butt joint assembly, the other side of the overturning limiting frame body is fixedly provided with a cylinder mounting frame, a chuck plate cylinder is fixedly arranged on the cylinder mounting frame, a chuck plate is arranged on a cylinder shaft of the chuck plate cylinder, and the chuck plate cylinder drives the chuck plate to move towards or back to the butt joint assembly.
10. The tire automatic upender clip entry cage system of claim 9, wherein: the overturning motor adopts a speed reducing motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023282679.8U CN214217320U (en) | 2020-12-30 | 2020-12-30 | Automatic overturning and clamping cage entering system for tires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023282679.8U CN214217320U (en) | 2020-12-30 | 2020-12-30 | Automatic overturning and clamping cage entering system for tires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214217320U true CN214217320U (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023282679.8U Active CN214217320U (en) | 2020-12-30 | 2020-12-30 | Automatic overturning and clamping cage entering system for tires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214217320U (en) |
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2020
- 2020-12-30 CN CN202023282679.8U patent/CN214217320U/en active Active
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