CN217866775U - Lunch box stacking and conveying mechanism - Google Patents
Lunch box stacking and conveying mechanism Download PDFInfo
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- CN217866775U CN217866775U CN202221924668.1U CN202221924668U CN217866775U CN 217866775 U CN217866775 U CN 217866775U CN 202221924668 U CN202221924668 U CN 202221924668U CN 217866775 U CN217866775 U CN 217866775U
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Abstract
The utility model discloses a lunch box stacking and conveying mechanism, which comprises a frame, a first conveying device, a turnover receiving device, a lunch box pushing device and a second conveying device, wherein the first conveying device, the turnover receiving device, the lunch box pushing device and the second conveying device are respectively arranged on the frame; the overturning material receiving device comprises a material receiving frame and at least two overturning guide blocks, the material receiving frame is arranged behind and below the discharge end of the first conveying device, each overturning guide block is arranged above the material receiving frame, and the front side surface of each overturning guide block is provided with an arc-shaped guide surface; the lunch box pushing device is arranged below the discharge end of the first conveying device and corresponds to the feed end of the second conveying device in position; the second conveying device is arranged on the rear side of the material receiving frame, the conveying surface of the second conveying device is flush with the surface of the material receiving frame, and the second conveying device is provided with a lunch box limiting device. The lunch box stacking and conveying mechanism can convert a flatly-laid lunch box conveying state into a vertically-laid lunch box conveying state, and stack and convey the lunch boxes.
Description
Technical Field
The utility model relates to a packaging container production facility, in particular to lunch-box piles up conveying mechanism.
Background
The lunch box is a plastic cup component product produced in batches by a mould, and can enter the next process, such as printing, packaging or direct filling, and the like after demoulding by stacking. At present, when lunch boxes are conveyed, a plurality of lunch boxes are stacked and then stand up for conveying, and the lunch boxes in front are easy to fall down; lay flat after piling up a plurality of lunch-boxes and carry, can't once only carry a plurality of lunch-boxes again, pile up the high easy whole pile and empty, consequently can only carry a small amount of lunch-boxes at every turn to rely on the manual work to pile up the lunch-box at conveyor's discharge end department and carry out the secondary and pile up, in order convenient to process, this kind of mode is wasted time and energy.
Disclosure of Invention
The utility model aims to solve the technical problem that a conveying mechanism is piled up to lunch-box is provided, this kind of lunch-box piles up conveying mechanism and can turn into the state of standing with the lunch-box by the state of keeping flat the transport to pile up the transport.
In order to solve the technical problems, the technical scheme is as follows:
the utility model provides a conveying mechanism is piled up to lunch-box, includes frame and first conveyor, and first conveyor installs in the frame its characterized in that: the lunch box turnover machine is characterized by further comprising a turnover receiving device, a lunch box pushing device and a second conveying device, wherein the turnover receiving device, the lunch box pushing device and the second conveying device are respectively installed on the rack; the overturning material receiving device comprises a material receiving frame and at least two overturning guide blocks, the material receiving frame is arranged behind and below the discharge end of the first conveying device, each overturning guide block is arranged above the material receiving frame, and the front side surface of each overturning guide block is provided with an arc-shaped guide surface which is gradually inclined backwards from front to back; the lunch box pushing device is arranged below the discharge end of the first conveying device and corresponds to the feed end of the second conveying device in position; the second conveying device is arranged on the rear side of the material receiving frame, the conveying surface of the second conveying device is flush with the surface of the material receiving frame, and the second conveying device is provided with a lunch box limiting device.
In the lunch box stacking and conveying mechanism, the height difference between the material receiving frame and the first conveying device is generally the height of the lunch boxes required to be conveyed when the lunch boxes are erected. When the lunch box stack is conveyed and stacked, a flatly placed lunch box stack (usually a plurality of lunch boxes are stacked and simultaneously conveyed) is conveyed on a first conveying device, and when the lunch box stack moves to a discharge end of the first conveying device, the rear end of the lunch box stack is firstly suspended and then falls downwards under the action of gravity; in the falling process, the rear end of the lunch box stack is in contact with the arc-shaped guide surface on the turnover guide block and gradually changes into a standing state along the guide of the arc-shaped guide surface until the lunch box stack falls on the material receiving frame; then, the lunch box pushing device pushes the lunch box stack on the material receiving frame to the second conveying device, and the lunch box stack is kept in a standing state under the limit of the lunch box limiting device; finally, after multiple cycles, a plurality of lunch boxes are stacked in a stack at the feeding end of the second conveying device in sequence, the second conveying device sends out the stacked lunch boxes, and the discharging end of the second conveying device corresponds to the feeding end of the next process in general. According to the lunch box stacking and conveying mechanism, the lunch boxes can be converted from a flat state to a vertical state and can be conveyed out after being stacked into a stack, and the lunch box stacking and conveying mechanism is convenient for processing in subsequent processes.
The front-back direction is determined according to the conveying direction of the lunch box stack, and the position where the lunch box stack passes through firstly is front, and the position where the lunch box stack passes through secondly is back.
In an optimal scheme, the overturning material receiving device further comprises a plurality of elastic limiting mechanisms, each elastic limiting mechanism is installed on the material receiving frame respectively, the elastic limiting mechanisms are exposed out of the upper surface of the material receiving frame, and the elastic limiting mechanisms are located in the front of the material receiving frame and are sequentially arranged along the left direction and the right direction.
In a further preferred scheme, the elastic limiting mechanism comprises a limiting fastener, a rotating shaft and a torsion spring, the limiting fastener is hinged with the material receiving frame through the rotating shaft, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected with or in close contact with the material receiving frame, and the other end of the torsion spring is connected with or in close contact with the limiting fastener; the upper end of the limiting fastener is provided with a limiting convex point, and the limiting convex point is exposed out of the upper surface of the material receiving frame. When the lunch box stack is turned over and falls onto the material receiving frame, the limiting convex points can be in contact with the lower end of the lunch box stack and block the lunch box stack, so that the lower end of the lunch box stack is prevented from sliding and inclining; when the lunch box stack is pushed by the lunch box pushing device, the lunch box stack can push the limiting fastener to turn over, so that the limiting convex points can not block the lunch box stack any more; after the lunch box is piled up through the limiting fastener, the limiting fastener can be turned up again under the action of the torsion spring, so that the limiting salient points are exposed again.
In a further preferable scheme, the material receiving frame comprises a plurality of material receiving rods arranged side by side from left to right, adjacent material receiving rods are provided with intervals, the front ends of the material receiving rods are positioned below the discharge end of the first conveying device, and the rear ends of the material receiving rods are communicated with the feed end of the second conveying device; the limiting fastener is hinged to the side wall of the material receiving rod, and the limiting salient points are exposed out of the upper side wall of the material receiving rod.
Preferably, the conveying direction of the second conveying device is perpendicular to the conveying direction of the first conveying device. The lunch boxes stacked in a stack are in a state that the openings face the side surfaces along the conveying direction of the second conveying device, and the condition that the lunch boxes at two ends fall down cannot occur during conveying.
In a preferred scheme, the overturning receiving device further comprises a plurality of material separating plates, each material separating plate is vertically arranged on the receiving frame, the front ends of the material separating plates are in contact with the discharge end of the first conveying device, and the rear ends of the material separating plates are in contact with the feed end of the second conveying device; the side walls of the material separating plates are respectively provided with the overturning guide blocks. Generally, the first conveying device can convey multiple rows of lunch box piles simultaneously, and different numbers of material separating plates can be arranged to separate and turn over the lunch box piles according to the number of the conveyed rows; meanwhile, the material separating plate can also play a role in supporting the lunch box stack, so that the lunch box stack is prevented from falling down when being pushed subsequently.
In a preferable scheme, the lunch box pushing device comprises a material pushing plate and a material pushing plate driving device capable of driving the material pushing plate to move back and forth, the material pushing plate driving device is installed on the rack, and the material pushing plate is in transmission connection with a power output end of the material pushing plate driving device. Generally, when the first conveying device conveys a plurality of lunch box piles at the same time, the number of the material pushing plates is correspondingly large. The material pushing plate driving device can adopt an air cylinder.
In a preferred scheme, the lunch box limiting device comprises a lifting frame, a plurality of guide rods and a plurality of pressure rods, wherein the lifting frame is arranged on the rack in a vertically movable manner, and each guide rod is fixedly arranged on the lifting frame; each pressure lever is provided with a guide seat matched with the guide rod, each pressure lever is arranged on the guide rod in a back-and-forth moving mode through the guide seat, each pressure lever is located above the material receiving frame and the second conveying device, and the extending direction of each pressure lever is the same as the pushing direction of the lunch box pushing device. After the lunch box is piled on the second conveying device, the upper end of the lunch box pile can be limited by the pressing rod, so that the lunch box pile cannot incline and fall down. According to the heights of different lunch box stacks, the height of the pressure rod from the second conveying device can be adjusted through the lifting frame; according to the width that different lunch-boxes were piled, can be through the position of adjustment depression bar on the guide bar, make a plurality of depression bars can be piled to a list lunch-box simultaneously and carry on spacingly. The lifting frame usually comprises a plurality of vertical rods, a plurality of through holes arranged in the vertical direction are formed in each vertical rod, screw holes are formed in the frame, the positions of the vertical rods are adjusted according to the required height during adjustment, and the vertical rods can be fixed by adopting bolts to penetrate through the through holes and then be connected with the screw holes in a threaded mode.
In the preferred scheme, the rack comprises a first fixing frame, a movable frame and a second fixing frame, the first conveying device is installed on the first fixing frame, the overturning receiving device, the lunch box pushing device and the second conveying device are installed on the movable frame respectively, and the movable frame is installed on the second fixing frame in a vertically movable mode. According to the height of different lunch boxes when standing up, the height difference between the material receiving frame and the first conveying device as well as between the second conveying device and the first conveying device can be adjusted by adjusting the position of the movable frame. The movable frame is generally provided with a plurality of guide posts extending along the vertical direction, guide grooves extending up and down are formed in the guide posts, guide pieces matched with the guide grooves are arranged on the second fixed frame, and the machine frame further comprises a locking piece (the movable frame is connected with the second fixed frame through bolts) capable of locking the movable frame on the second fixed frame.
The first conveying device and the second conveying device can adopt conveying belts.
The beneficial effects of the utility model reside in that: the lunch box stacking and conveying mechanism can convert a flatly-laid conveying state of lunch boxes into a standing state and perform stacking and conveying.
Drawings
Fig. 1 is a schematic structural view of a lunch box stacking and conveying mechanism in an embodiment of the present invention;
FIG. 2 is an enlarged view of position A of FIG. 1;
fig. 3 is a side view of the lunch-box stacking and conveying mechanism in the embodiment of the present invention when conveying the lunch-box.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments:
as shown in fig. 1-3, the lunch box stacking and conveying mechanism includes a frame 1, a first conveying device 2, an overturning receiving device 3, a lunch box pushing device 4 and a second conveying device 5, wherein the first conveying device 2, the overturning receiving device 3, the lunch box pushing device 4 and the second conveying device 5 are respectively mounted on the frame 1; the overturning material receiving device 3 comprises a material receiving frame 301, a plurality of overturning guide blocks 302, a plurality of elastic limiting mechanisms 303 and a plurality of material separating plates 304, the material receiving frame 301 is arranged at the rear lower part of the discharge end of the first conveying device 2, each overturning guide block 302 is arranged above the material receiving frame 301, and the front side surface of each overturning guide block 302 is provided with an arc-shaped guide surface 3021 which inclines backwards gradually from front to back; each elastic limiting mechanism 303 is respectively arranged on the material receiving frame 301, the elastic limiting mechanisms 303 are exposed out of the upper surface of the material receiving frame 301, and the elastic limiting mechanisms 303 are positioned at the front part of the material receiving frame 301 and are sequentially arranged along the left and right directions; each material partition plate 304 is vertically arranged on the material receiving frame 301, the front end of each material partition plate 304 is in contact with the discharge end of the first conveying device 2, and the rear end of each material partition plate 304 is in contact with the feed end of the second conveying device 5; the overturning guide block 302 is arranged on the side wall of the material separating plate 304; the lunch box pushing device 4 is arranged below the discharge end of the first conveying device 2 and corresponds to the feed end of the second conveying device 5 in position; second conveyor 5 sets up in the rear side that connects work or material rest 301, and second conveyor 5's conveying face and the surperficial parallel and level that connects work or material rest 301 are equipped with lunch-box stop device 501 on the second conveyor 5.
In the lunch box stacking and conveying mechanism, the height difference between the material receiving frame 301 and the first conveying device 2 is the height of the lunch boxes to be conveyed when the lunch boxes are erected. When the lunch box stack is conveyed and stacked, the flatly placed lunch box stack (a plurality of lunch boxes are stacked and simultaneously conveyed) is conveyed on the first conveying device 2, and when the lunch box stack moves to the discharge end of the first conveying device 2, the rear end of the lunch box stack is firstly suspended and then falls downwards under the action of gravity; in the falling process, the rear end of the lunch box stack is in contact with the arc-shaped guide surface 3021 on the overturning guide block 302, the state is gradually changed along the guide of the arc-shaped guide surface 3021 until the lunch box stack is changed into the standing state when falling onto the material receiving frame 301, the elastic limiting mechanism 303 can be in contact with the lower end of the lunch box stack and block the lunch box stack, and the lower end of the lunch box stack is prevented from sliding and inclining; then, the lunch box pushing device 4 pushes the lunch box stack on the material receiving frame 301 to the second conveying device 5, and when the lunch box stack is pushed by the lunch box pushing device 4, the lunch box stack can push the elastic limiting mechanism 303 to turn over, so that the elastic limiting mechanism 303 no longer blocks the lunch box stack; after the lunch box stack passes through the elastic limiting mechanism 303, the elastic limiting mechanism 303 can be turned up again, and the lunch box stack is kept in a standing state under the limitation of the lunch box limiting device 501; finally, after a plurality of cycles, a plurality of lunch boxes are stacked at the feeding end of the second conveying device 5 to be stacked in a stack in sequence, the lunch boxes stacked in the stack are sent out by the second conveying device 5, and the discharge end of the second conveying device 5 corresponds to the feeding end of the next process in general. According to the lunch box stacking and conveying mechanism, the lunch boxes can be converted from a flat state to a vertical state and can be conveyed out after being stacked into a stack, and the lunch box stacking and conveying mechanism is convenient for processing in subsequent processes.
Generally, the first conveying device 2 can convey multiple rows of lunch box piles at the same time, and according to the number of the conveyed rows, different numbers of material separating plates 304 can be arranged to separate and turn over the lunch box piles; meanwhile, the material partition plate 304 can also support the lunch box stack, so that the lunch box stack is prevented from falling down when being pushed subsequently.
The front-back direction is determined according to the conveying direction of the lunch box stack, and the position where the lunch box stack passes through first is front, and the position where the lunch box stack passes through last is back.
The elastic limiting mechanism 303 comprises a limiting fastener 3031, a rotating shaft 3032 and a torsion spring (not visible in the figure), the limiting fastener 3031 is hinged with the material receiving frame 301 through the rotating shaft 3032, the torsion spring is sleeved on the rotating shaft 3032, one end of the torsion spring is connected with or closely contacted with the material receiving frame 301, and the other end of the torsion spring is connected with or closely contacted with the limiting fastener 3031; the upper end of the limiting fastener 3031 is provided with a limiting salient point 30311, and the limiting salient point 30311 is exposed out of the upper surface of the material receiving frame 301. When the lunch box stack is turned over and falls onto the material receiving frame 301, the limiting salient points 30311 can be in contact with the lower end of the lunch box stack and block the lunch box stack, so that the lower end of the lunch box stack is prevented from sliding and inclining; when the lunch box stack is pushed by the lunch box pushing device 4, the lunch box stack can push the limiting fastener 3031 to turn over, so that the limiting salient points 30311 can not block the lunch box stack any more; after the lunch box stack passes through the limiting fastener 3031, the limiting fastener 3031 can be turned up again under the action of the torsion spring, so that the limiting salient points 30311 are exposed again.
The material receiving frame 301 comprises a plurality of material receiving rods 3011 arranged side by side from left to right, the adjacent material receiving rods 3011 are provided with intervals, the front ends of the material receiving rods 3011 are positioned below the discharge end of the first conveying device 2, and the rear ends of the material receiving rods 3011 are communicated with the feed end of the second conveying device 5; the limit fastener 3031 is hinged with the side wall of the material receiving rod 3011, and the limit salient point 30311 is exposed out of the upper side wall of the material receiving rod 3011.
The conveying direction of the second conveyor 5 is perpendicular to the conveying direction of the first conveyor 2. The lunch boxes stacked in a stack are in a state that the openings face the side surfaces along the conveying direction of the second conveying device 5, and the lunch boxes at two ends cannot fall down during conveying.
The lunch box pushing device 4 comprises a material pushing plate 401 and a material pushing plate driving device 402 capable of driving the material pushing plate 401 to move back and forth, the material pushing plate driving device 402 is installed on the rack 1, and the material pushing plate 401 is in transmission connection with the power output end of the material pushing plate driving device 402. When the first conveying device 2 simultaneously conveys a plurality of lunch box stacks, the number of the pusher plates 401 is also correspondingly large. The pusher plate driving device 402 employs an air cylinder.
The lunch box limiting device 501 comprises a lifting frame 5011, a plurality of guide rods 5012 and a plurality of pressure rods 5013, wherein the lifting frame 5011 is mounted on the rack 1 in a vertically movable manner, and the guide rods 5012 are fixedly mounted on the lifting frame 5011 respectively; each pressure lever 5013 is provided with a guide seat 50131 matched with the guide rod 5012, each pressure lever 5013 is arranged on the guide rod 5012 in a way of moving back and forth through the guide seat 50131, each pressure lever 5013 is positioned above the material receiving rack 301 and the second conveying device 5, and the extending direction of each pressure lever 5013 is the same as the pushing direction of the lunch box pushing device 4. After the lunch box is stacked on the second conveying device 5, the compression bar 5013 can limit the upper end of the lunch box stack, so that the lunch box stack cannot fall down obliquely. According to the heights of different lunch box stacks, the height of the pressure rod 5013 from the second conveying device 5 can be adjusted through the lifting frame 5011; according to the width of different lunch box stacks, the positions of the pressing rods 5013 on the guide rods 5012 can be adjusted, so that the pressing rods 5013 can limit a row of lunch box stacks at the same time. The lifting rack 5011 comprises a plurality of vertical rods, a plurality of through holes arranged in the vertical direction are formed in each vertical rod, screw holes are formed in the rack 1, and during adjustment, the positions of the vertical rods are adjusted according to the required height, and bolts are adopted to penetrate through the through holes and then are in threaded connection with the screw holes, so that the vertical rods can be fixed.
The machine frame 1 comprises a first fixed frame 101, a movable frame 102 and a second fixed frame 103, a first conveying device 2 is installed on the first fixed frame 101, a turnover receiving device 3, a lunch box pushing device 4 and a second conveying device 5 are respectively installed on the movable frame 102, and the movable frame 102 is installed on the second fixed frame 103 in a vertically movable manner. According to the height of different lunch boxes when standing up, the height difference between the material receiving frame 301 and the first conveying device 2 and between the second conveying device 5 and the first conveying device 2 can be adjusted by adjusting the position of the movable frame 102. The movable frame 102 is provided with a plurality of guide posts extending in the vertical direction, guide grooves extending in the vertical direction are formed in the guide posts, guide pieces matched with the guide grooves are arranged on the second fixed frame 103, and the machine frame 1 further comprises a locking piece (generally, bolts are used for connecting the movable frame 102 and the second fixed frame 103) capable of locking the movable frame 102 on the second fixed frame 103.
The first conveying device 2 and the second conveying device 5 both adopt conveying belts.
Claims (9)
1. The utility model provides a conveying mechanism is piled up to lunch-box, includes frame and first conveyor, and first conveyor installs in the frame its characterized in that: the lunch box turnover machine is characterized by further comprising a turnover receiving device, a lunch box pushing device and a second conveying device, wherein the turnover receiving device, the lunch box pushing device and the second conveying device are respectively installed on the rack; the overturning material receiving device comprises a material receiving frame and at least two overturning guide blocks, the material receiving frame is arranged behind and below the discharge end of the first conveying device, each overturning guide block is arranged above the material receiving frame, and the front side surface of each overturning guide block is provided with an arc-shaped guide surface which is inclined backwards gradually from front to back; the lunch box pushing device is arranged below the discharge end of the first conveying device and corresponds to the feed end of the second conveying device in position; the second conveying device is arranged on the rear side of the material receiving frame, the conveying surface of the second conveying device is flush with the surface of the material receiving frame, and the second conveying device is provided with a lunch box limiting device.
2. The lunch box stacking and conveying mechanism as claimed in claim 1, wherein: the overturning material receiving device further comprises a plurality of elastic limiting mechanisms, each elastic limiting mechanism is installed on the material receiving frame respectively, the elastic limiting mechanisms are exposed out of the upper surface of the material receiving frame, and each elastic limiting mechanism is located in the front of the material receiving frame and arranged in sequence in the left-right direction.
3. The lunch box stacking and conveying mechanism as claimed in claim 2, wherein: the elastic limiting mechanism comprises a limiting fastener, a rotating shaft and a torsion spring, the limiting fastener is hinged with the material receiving frame through the rotating shaft, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected or closely contacted with the material receiving frame, and the other end of the torsion spring is connected or closely contacted with the limiting fastener; the upper end of the limiting fastener is provided with a limiting convex point, and the limiting convex point is exposed out of the upper surface of the material receiving frame.
4. A lunch box stacking and conveying mechanism as claimed in claim 3, wherein: the material receiving frame comprises a plurality of material receiving rods arranged side by side from left to right, the adjacent material receiving rods are provided with intervals, the front ends of the material receiving rods are positioned below the discharge end of the first conveying device, and the rear ends of the material receiving rods are communicated with the feed end of the second conveying device; the limiting fastener is hinged to the side wall of the material receiving rod, and the limiting convex points are exposed out of the upper side wall of the material receiving rod.
5. The lunch box stacking and conveying mechanism as claimed in claim 1, wherein: the conveying direction of the second conveying device is perpendicular to the conveying direction of the first conveying device.
6. The lunch box stacking and conveying mechanism as claimed in claim 1, wherein: the overturning material receiving device further comprises a plurality of material separating plates, each material separating plate is vertically arranged on the material receiving frame, the front ends of the material separating plates are in contact with the discharge end of the first conveying device, and the rear ends of the material separating plates are in contact with the feed end of the second conveying device; the side walls of the material separating plates are respectively provided with the overturning guide blocks.
7. The lunch box stacking and conveying mechanism as claimed in claim 1, wherein: the lunch box pushing device comprises a material pushing plate and a material pushing plate driving device capable of driving the material pushing plate to move back and forth, the material pushing plate driving device is installed on the rack, and the material pushing plate is in transmission connection with a power output end of the material pushing plate driving device.
8. The lunch box stacking and conveying mechanism as claimed in claim 1, wherein: the lunch box limiting device comprises a lifting frame, a plurality of guide rods and a plurality of pressure rods, the lifting frame is arranged on the rack in a vertically movable manner, and each guide rod is fixedly arranged on the lifting frame; each pressure lever is provided with a guide seat matched with the guide rod, each pressure lever is arranged on the guide rod in a back-and-forth moving mode through the guide seat, each pressure lever is located above the material receiving frame and the second conveying device, and the extending direction of each pressure lever is the same as the pushing direction of the lunch box pushing device.
9. The lunch box stacking and conveying mechanism as claimed in claim 1, wherein: the frame includes first mount, adjustable shelf and second mount, first conveyor installs on first mount, upset receiving device, lunch-box thrust unit and second conveyor install respectively on the adjustable shelf, and the adjustable shelf can be installed on the second mount with reciprocating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221924668.1U CN217866775U (en) | 2022-07-25 | 2022-07-25 | Lunch box stacking and conveying mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221924668.1U CN217866775U (en) | 2022-07-25 | 2022-07-25 | Lunch box stacking and conveying mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217866775U true CN217866775U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221924668.1U Active CN217866775U (en) | 2022-07-25 | 2022-07-25 | Lunch box stacking and conveying mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN217866775U (en) |
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2022
- 2022-07-25 CN CN202221924668.1U patent/CN217866775U/en active Active
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