CN219426272U - Double-station feeding and discharging device for round bar and cuboid workpieces - Google Patents
Double-station feeding and discharging device for round bar and cuboid workpieces Download PDFInfo
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- CN219426272U CN219426272U CN202320297870.4U CN202320297870U CN219426272U CN 219426272 U CN219426272 U CN 219426272U CN 202320297870 U CN202320297870 U CN 202320297870U CN 219426272 U CN219426272 U CN 219426272U
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Abstract
The utility model belongs to the technical field of photovoltaic processing equipment, and discloses a double-station feeding and discharging device for round bars and cuboid workpieces. Comprises a landing bracket; a movable frame is arranged on the floor support, and a feeding trolley and a discharging trolley are respectively arranged on the upper layer and the lower layer of the movable frame; the floor support and the movable frame are connected through a servo lifting group; the two sides of the top of the floor stand are respectively provided with a butt joint clamping and positioning mechanism, the device is provided with a transition positioning mechanism, and the transition positioning mechanism is arranged on a machine tool needing loading and unloading; the butt joint clamping and positioning mechanism and the excessive positioning mechanism are arranged in a height corresponding manner; the floor stand is also equipped with an AGV trolley for moving the floor stand. The truss is used for solving the problems of poor truss occupation and inaccurate truss flexibility and positioning.
Description
Technical Field
The utility model belongs to the technical field of photovoltaic processing equipment, and relates to a double-station feeding and discharging device for round bars and cuboid workpieces.
Background
The prior machine feeding and discharging equipment for round bar and cuboid workpieces in the market basically adopts truss type feeding and discharging, and the truss type feeding and discharging has the defects of poor flexibility, large occupied space, larger use limitation on occasions needing to replace machine types frequently, consideration of smoothness and stability of the workpieces entering a machine tool when the machine is applied to industries such as sliced photovoltaics and the like, and positioning deviation.
Disclosure of Invention
The utility model aims to overcome the defects in the background art, and provides a double-station feeding and discharging device for round bars and cuboid workpieces, which is used for solving the problems of poor truss occupation and truss flexibility and inaccurate positioning.
The technical scheme adopted for solving the technical problems is as follows: the double-station loading and unloading device for the round bar and the cuboid workpieces comprises a floor bracket; a movable frame is arranged on the floor support, and a feeding trolley and a discharging trolley are respectively arranged on the upper layer and the lower layer of the movable frame; the floor support and the movable frame are connected through a servo lifting group; the two sides of the top of the floor stand are respectively provided with a butt joint clamping and positioning mechanism, the device is provided with a transition positioning mechanism, and the transition positioning mechanism is arranged on a machine tool needing loading and unloading; the butt joint clamping and positioning mechanism and the excessive positioning mechanism are arranged in a height corresponding manner; the floor stand is also equipped with an AGV trolley for moving the floor stand.
The floor stand comprises a frame, wherein the left side and the right side of the frame are respectively provided with a stand column, the bottom of the frame is provided with universal wheels, the lower end of the frame is provided with an AGV trolley placing position, one stand column is provided with a servo lifting group, the servo lifting group comprises a servo motor, the servo motor is arranged on the stand columns, the servo motor is connected with a screw rod through a coupler, and the screw rod is vertically arranged on the stand columns; the servo motor is connected with one end of the movable frame through a screw nut; the inner side of each upright post is provided with a linear guide rail; the movable frame is connected with the inner side of the upright post through a sliding block and a linear guide rail.
The movable frame comprises a main frame, wherein cross bars are respectively arranged at the tops of two sides of the main frame, two supports A are arranged on each cross bar, fixed plates are respectively arranged at two sides of the bottom of the main frame, and two supports A are arranged on each fixed plate; the upper part and the lower part of the main frame adjacent to the servo lifting group are respectively provided with a bracket B, and the bottom edge of a fixed plate arranged adjacent to the servo lifting group is provided with a connecting frame for connecting with a screw nut; the bracket B is used for limiting a telescopic multi-stage rod arranged on the feeding trolley or the discharging trolley.
The feeding trolley and the discharging trolley are identical in structure, one of the feeding trolley and the discharging trolley is responsible for feeding, the other feeding trolley is responsible for discharging, and the height position is adjusted through the movable frame.
The feeding trolley comprises a supporting frame and a workpiece loading plate; two U-shaped connecting plates are arranged on the support frame, and the U-shaped connecting plates are arranged towards the outer side; the support frame is connected with the workpiece loading plate through two U-shaped connecting plates and a plurality of transition guide wheels; the transition guide wheels are sequentially arranged and fixedly connected with the workpiece loading plate, are placed in the U-shaped connecting plate groove, and are different in two adjacent sizes; the workpiece loading plate is of a U-shaped structure, and a plurality of transition guide wheels are respectively arranged on two sides of the workpiece loading plate; the front end of the workpiece loading plate is provided with a workpiece placement position corresponding to the workpiece, and the workpiece placement position is provided with a groove corresponding to the workpiece; the feeding trolley is also provided with a servo motor, the servo motor is fixedly connected with the support frame, the output end of the servo motor is connected with a telescopic multi-stage rod, the front end of the telescopic multi-stage rod is provided with a connecting piece, the connecting piece is fixed on a connecting bracket, and the connecting bracket is connected with a plurality of transition guide wheels on one U-shaped connecting plate; the servo motor and the telescopic multi-stage rod are lifted along with the movable frame, the feeding trolley and the discharging trolley are material carriers, one ends of the feeding trolley and the discharging trolley are fixed on the connecting support, and the feeding trolley/discharging trolley is conveyed through the transition guide wheels and the transition positioning mechanism serving as guide rail support.
The supporting frames of the feeding trolley and the discharging trolley are respectively combined on the movable frame through the support B.
The butt joint clamping positioning mechanism comprises a servo electric cylinder, wherein the servo electric cylinder is arranged on a fixed seat and is connected with the floor stand through the fixed seat, a servo module is arranged on the servo electric cylinder, a servo template is arranged on the servo module, and sliding connection between the servo module and the servo template is realized through a sliding block and a guide rail; the servo template is provided with a bottom plate, the front end of the bottom plate is fixedly provided with a spring B, the front of the spring B is provided with a guiding locating piece, the upper end of the bottom plate is fixedly provided with a clamping plate, the clamping plate is provided with a spring A, and the guiding locating piece is arranged at the bottom of the front end of the clamping plate and is connected with the guiding locating piece.
And the butt joint clamping positioning mechanism performs secondary positioning with a transition positioning mechanism fixed on a machine tool needing loading and unloading when loading and unloading so as to ensure loading and unloading precision.
The transition positioning mechanism comprises a transition guide rail and a transition positioning frame, and a handle veneer which is fixedly connected with the machine tool is arranged on the transition positioning frame; the transition positioning frame base is of a convex structure, the bottom surface of the convex surface is provided with a transition guide rail plate, and both sides of the transition guide rail plate are respectively provided with a U-shaped transition guide rail; the two concave surfaces of the frame base are respectively provided with a positioning plate which is of a U-shaped structure.
Further, the two upright posts are fixed on the frame through screw fasteners respectively.
Further, the bottom of the frame is provided with a pin hole, and a pin of the AGV trolley is inserted in a butt joint mode when in transportation, and is separated when in loading and unloading, so that the secondary positioning is guaranteed to run reliably. After the frame and the upright post are lifted by the AGV trolley and then transported to the position required by the machine tool needing loading and unloading, the servo lifting group drives the movable frame to realize the up-and-down movement of the loading trolley and the unloading trolley.
Further, the movable frame is a bracket welded by square tubes and is used for supporting the feeding trolley and the discharging trolley.
Further, the device is also provided with a PLC control system, and the servo lifting group, the servo module, the servo motor and the servo electric cylinder are respectively connected with the PLC system, and the device is not limited to a specific model, and can realize the working function of the device.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a double-station loading and unloading device for round bar and cuboid workpieces, which aims at loading and unloading of round bar and cuboid workpieces, adopts a submerged lifting AGV bearing ground support, two trolleys (loading trolley and unloading trolley) capable of loading workpieces into and out of a machine tool are arranged on the ground support, and a secondary positioning mechanism (butt joint clamping positioning mechanism) for accurately positioning the round bar and cuboid workpieces is arranged on the ground support.
Compared with the prior conventional truss feeding and discharging, the double-station feeding and discharging device for round bars and cuboid workpieces has the following advantages:
1. the double-station feeding and discharging device for the round bar and the cuboid workpieces is compact in structure, high in specificity, high in cost performance and capable of configuring the number of devices according to specific working beats of working conditions;
2. the number of the devices can be configured according to the requirement, and the devices can be intensively parked when feeding and discharging are not required, so that the field of a processing machine tool is not occupied; the occupied area is smaller;
3. the device provided by the utility model can realize quick model change when a model (the device of the utility model with different sizes corresponding to different lengths of workpieces) is replaced, namely, a system owned by an AGV trolley can select needed materials at any time to carry out targeted loading and unloading, and if the model is added, the compatibility of all models can be realized by adding the device matched with the sizes of the materials on the basis that other materials are not influenced.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a side view of a duplex position loading and unloading device for round bars and cuboid workpieces.
Fig. 2 is a perspective view of a duplex position feeding and discharging device for round bars and cuboid workpieces.
Fig. 3 is a side view of the floor stand of the present utility model.
Fig. 4 is a front view of the floor stand of the present utility model.
Fig. 5 is a schematic view of a moving frame of the present utility model.
Fig. 6 is a schematic diagram of a loading trolley structure.
Fig. 7 is a schematic diagram of the structure of the unloading trolley for loading workpieces.
Fig. 8 is a schematic view of the structure of the butt clamp positioning mechanism.
Fig. 9 is a schematic diagram of a transitional positioning mechanism.
Fig. 10 is a perspective view of a transitional positioning mechanism.
The automatic lifting device comprises a floor support, a movable frame, a loading trolley, a blanking trolley, a butt joint clamping positioning mechanism, a transition positioning mechanism, a framework, a left upright post, a right upright post, a servo lifting group, an AGV trolley, a main frame, a support A, a fixing plate, a support B, a connecting frame, a support frame, a telescopic multi-stage rod and a workpiece loading plate. 501. Clamping plate 502, spring A,503, guide positioning piece 504, spring B,505, servo cylinder, 601, transition guide rail, 602, positioning plate.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to the following examples.
Example 1
A double-station loading and unloading device for round bars and cuboid workpieces is shown in figures 1-10, and comprises a floor bracket 1; a movable frame 2 is arranged on the floor support 1, and a feeding trolley 3 and a discharging trolley 4 are respectively arranged on the upper layer and the lower layer of the movable frame 2; the floor stand 1 and the movable frame 2 are connected through a servo lifting group 104; the two sides of the top of the floor stand 1 are respectively provided with a butt joint clamping positioning mechanism 5, the device is provided with a transition positioning mechanism 6, and the transition positioning mechanism 6 is arranged on a machine tool needing loading and unloading; the butt joint clamping and positioning mechanism 5 and the excessive positioning mechanism 6 are arranged in a height corresponding manner; the floor stand 1 is also provided with an AGV trolley for moving the floor stand 1.
The floor stand 1 comprises a frame 101, wherein the left side and the right side of the frame 101 are respectively provided with a stand column, the bottom of the frame 101 is provided with universal wheels, the lower end of the frame 101 is provided with an AGV trolley 105 placing position, one stand column is provided with a servo lifting group 104, the servo lifting group 104 comprises a servo motor, the servo motor is arranged on the stand column, the servo motor is connected with a screw rod through a coupler, and the screw rod is vertically arranged on the stand column; the servo motor is connected with one end of the movable frame 2 through a screw nut; the inner side of each upright post is provided with a linear guide rail; the movable frame 2 is connected with the inner side of the upright post through a sliding block and a linear guide rail.
The movable frame 2 comprises a main frame 201, wherein cross bars are respectively arranged at the tops of two sides of the main frame 201, two supports A202 are arranged on each cross bar, fixed plates 203 are respectively arranged at two sides of the bottom of the main frame 201, and two supports A202 are arranged on each fixed plate 203; the upper part and the lower part of the main frame 201 adjacent to the servo lifting group 104 are respectively provided with a bracket B204, and the bottom edge of the fixed plate 203 arranged adjacent to the servo lifting group 104 is provided with a connecting frame 205 for connecting with a screw nut; the bracket B204 is used for limiting a telescopic multi-stage rod 302 arranged on the feeding trolley 3 or the discharging trolley 4.
The feeding trolley 3 and the discharging trolley 4 have the same structure, one is responsible for feeding, the other is responsible for discharging, and the height position is adjusted by the movable frame 2.
The feeding trolley 3 comprises a supporting frame 301 and a workpiece loading plate 303; two U-shaped connecting plates are arranged on the support frame 301, and the U-shape faces to the outer side; the supporting frame 301 is connected with the workpiece loading plate 303 through two U-shaped connecting plates and a plurality of transition guide wheels; the transition guide wheels are sequentially arranged in sequence and fixedly connected with the workpiece loading plate 303, the transition guide wheels are placed in the U-shaped connecting plate groove, and two adjacent transition guide wheels are different in size; the workpiece loading plate 303 is of a U-shaped structure, and a plurality of transition guide wheels are respectively arranged on two sides of the workpiece loading plate; the front end of the workpiece loading plate 303 is provided with a workpiece placement position corresponding to a workpiece, and the workpiece placement position is provided with a groove corresponding to the workpiece; the feeding trolley 3 is also provided with a servo motor, the servo motor is fixedly connected with the support frame 301, the output end of the servo motor is connected with the telescopic multi-stage rod 302, the front end of the telescopic multi-stage rod 302 is provided with a connecting piece, the connecting piece is fixed on a connecting bracket, and the connecting bracket is connected with a plurality of transition guide wheels on one U-shaped connecting plate; the servo motor and the telescopic multi-stage rod 302 are lifted along with the movable frame 2, the feeding trolley 3 and the discharging trolley 4 are material carriers, one ends of the feeding trolley 3 and the discharging trolley 4 are fixed on the connecting support, and the feeding trolley 3/the discharging trolley 4 are conveyed through the transition guide wheels and the transition positioning mechanism 6 serving as guide rail support.
The supporting frames 301 of the feeding trolley 3 and the discharging trolley 4 are respectively combined on the movable frame 2 through the supporting frames B204.
The butt joint clamping and positioning mechanism 5 comprises a servo electric cylinder 505, wherein the servo electric cylinder 505 is arranged on a fixed seat and is connected with the floor stand 1 through the fixed seat, a servo module is arranged on the servo electric cylinder 505, a servo template is arranged on the servo module, and sliding connection is realized between the servo module and the servo template through a sliding block and a guide rail; the servo template is provided with a bottom plate, the front end of the bottom plate is fixedly provided with a spring B504, the front of the spring B504 is provided with a guiding locating piece 503, the upper end of the bottom plate is fixedly provided with a clamping plate 501, the clamping plate 501 is provided with a spring A502, the guiding locating piece 503 is arranged at the bottom of the front end of the clamping plate 501, and the clamping plate 501 is connected with the guiding locating piece 503.
The butt joint clamping positioning mechanism 5 performs secondary positioning with a transition positioning mechanism 6 fixed on a machine tool needing loading and unloading when loading and unloading so as to ensure loading and unloading precision.
The transition positioning mechanism 6 comprises a transition guide rail 601 and a transition positioning frame, and a handle veneer which is fixedly connected with the machine tool is arranged on the transition positioning frame; the transition positioning frame base is of a convex structure, the bottom surface of the convex surface is provided with a transition guide rail plate, and both sides of the transition guide rail plate are respectively provided with a U-shaped transition guide rail 601; the two concave surfaces of the transition positioning frame base are respectively provided with a positioning plate 602, and the positioning plates 602 are of U-shaped structures. The transition positioning mechanism 6 is fixed with the machine tool, the floor stand 1 is clamped with the positioning plate 602 through the butt joint clamping positioning mechanism 5 to realize positioning and clamping between the floor stand 1 and the machine tool, and the feeding trolley 3 and the discharging trolley 4 enter the machine tool through the transition guide rail 601 to realize feeding and discharging.
The two upright posts are respectively fixed on the frame through screw handles.
The bottom of the frame is provided with a pin hole, and the pin of the AGV trolley 105 is inserted in a butt joint manner with the pin hole of the frame during transportation and separated during loading and unloading, so that the secondary positioning is ensured to run reliably. After the frame and the upright post are lifted by the AGV trolley 105 and then transported to the position required by the machine tool needing loading and unloading, the servo lifting group 104 drives the movable frame 2 to realize the up-and-down movement of the loading trolley 3 and the unloading trolley 4.
The movable frame 2 is a bracket welded by square tubes and is used for supporting the feeding trolley 3 and the discharging trolley 4.
The device is also provided with a PLC control system, and the servo lifting group 104, the servo module, the servo motor and the servo electric cylinder 505 are respectively connected with the PLC system, and the device is not limited to a specific model, and can realize the working function of the device.
During specific work, the AGV 105 below the floor support 1 carries the floor support 1 and loads the movable frame 2, the feeding trolley 3, the discharging trolley 4 and the butt joint clamping positioning mechanism 5, the feeding is carried by the feeding trolley 3 from the feeding position, the AGV 105 self-dispatching system (the AGV 105 is a commercial product, the model is not limited, the AGV is provided with the dispatching system and is a conventional part) controls the AGV 105 to run to the front of a machine tool needing to be fed, the butt joint clamping positioning mechanism 5 and the transition positioning mechanism 6 are used for accurately positioning, the feeding trolley 3 and the discharging trolley 4 are driven to be lifted to a discharging position by the butt joint clamping positioning mechanism 5, the discharging trolley 4 enters the machine tool through a servo motor and exits the machine tool after the finished workpiece is connected, the feeding trolley 3 is conveyed to the feeding position by the servo lifting group 104 after the completion of the feeding, the feeding trolley 3 enters the machine tool through the servo motor and feeds the workpiece into the machine tool, the feeding trolley 3 exits the machine tool, and the servo lifting group 104 drives the feeding trolley 3 and the discharging trolley 4 after the butt joint clamping positioning mechanism 5 exits the positioning. After moving to the transport position, the floor stand 1 is carried by the AGV 105 to the next station.
While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.
Claims (8)
1. The double-station feeding and discharging device for round bars and cuboid workpieces is characterized by comprising a floor stand (1); a movable frame (2) is arranged on the floor stand (1), and a feeding trolley (3) and a discharging trolley (4) are respectively arranged on an upper layer and a lower layer of the movable frame (2); the floor stand (1) is connected with the movable frame (2) through a servo lifting group (104); the two sides of the top of the floor stand (1) are respectively provided with a butt joint clamping positioning mechanism (5), the device is provided with a transition positioning mechanism (6), and the transition positioning mechanism (6) is arranged on a machine tool needing loading and unloading; the butt joint clamping and positioning mechanism (5) and the transition positioning mechanism (6) are arranged in a height corresponding manner; the floor stand (1) is also provided with an AGV trolley for moving the floor stand (1).
2. The double-station feeding and discharging device for round bars and cuboid workpieces according to claim 1, wherein the floor stand (1) comprises a frame (101), two upright posts are respectively arranged on the left side and the right side of the frame (101), universal wheels are arranged at the bottom of the frame (101), an AGV trolley (105) placing position is arranged at the lower end of the frame (101), a servo lifting group (104) is arranged on one upright post, the servo lifting group (104) comprises a servo motor, the servo motor is arranged on the upright post, the servo motor is connected with a screw rod through a coupler, and the screw rod is vertically arranged on the upright post; the servo motor is connected with one end of the movable frame (2) through a screw nut; the inner side of each upright post is provided with a linear guide rail; the movable frame (2) is connected with the inner side of the upright post through a sliding block and a linear guide rail.
3. The double-station feeding and discharging device for round bars and cuboid workpieces according to claim 2, wherein the movable frame (2) comprises a main frame (201), cross bars are respectively arranged at the tops of two sides of the main frame (201), two supports A (202) are arranged on each cross bar, fixing plates (203) are respectively arranged at two sides of the bottom of the main frame (201), and two supports A (202) are arranged on each fixing plate (203); the upper part and the lower part of the main frame (201) at one side adjacent to the servo lifting group (104) are respectively provided with a bracket B (204), and the bottom edge of the fixed plate (203) at one side adjacent to the servo lifting group (104) is provided with a connecting frame (205) for connecting with a screw nut; the bracket B (204) is used for limiting a telescopic multi-stage rod (302) arranged on the feeding trolley (3) or the discharging trolley (4).
4. A double-station loading and unloading device for round bars and cuboid workpieces as claimed in claim 3, wherein the loading trolley (3) and the unloading trolley (4) have the same structure.
5. The double-station loading and unloading device for round bars and cuboid workpieces according to claim 4, wherein the loading trolley (3) comprises a supporting frame (301) and a workpiece loading plate (303); two U-shaped connecting plates are arranged on the supporting frame (301), and the U-shaped connecting plates are arranged towards the outer side; the supporting frame (301) is connected with the workpiece loading plate (303) through two U-shaped connecting plates and a plurality of transition guide wheels; the transition guide wheels are sequentially arranged and fixedly connected with the workpiece loading plate (303), are placed in the U-shaped connecting plate groove, and are different in two adjacent sizes; the workpiece loading plate (303) is of a U-shaped structure, and a plurality of transition guide wheels are respectively arranged on two sides of the workpiece loading plate; the front end of the workpiece loading plate (303) is provided with a workpiece placement position corresponding to a workpiece, and the workpiece placement position is provided with a groove corresponding to the workpiece; the feeding trolley (3) is further provided with a servo motor, the servo motor is fixedly connected with the supporting frame (301), the output end of the servo motor is connected with the telescopic multi-stage rod (302), the front end of the telescopic multi-stage rod (302) is provided with a connecting piece, the connecting piece is fixed on a connecting support, and the connecting support is connected with a plurality of transition guide wheels on one U-shaped connecting plate.
6. The double-station feeding and discharging device for round bars and cuboid workpieces according to claim 5 is characterized in that the butt joint clamping positioning mechanism (5) comprises a servo electric cylinder (505), the servo electric cylinder (505) is arranged on a fixed seat and is connected with a floor stand (1) through the fixed seat, a servo module is arranged on the servo electric cylinder (505), a servo template is arranged on the servo module, and sliding connection between the servo module and the servo template is realized through a sliding block and a guide rail; the servo template is provided with a bottom plate, the front end of the bottom plate is fixedly provided with a spring B (504), the front of the spring B (504) is provided with a guide positioning piece (503), the upper end of the bottom plate is fixedly provided with a clamping plate (501), the clamping plate (501) is provided with a spring A (502), the guide positioning piece (503) is arranged at the bottom of the front end of the clamping plate (501), and the clamping plate (501) is connected with the guide positioning piece (503).
7. The double-station feeding and discharging device for round bars and cuboid workpieces according to claim 6, wherein the transition positioning mechanism (6) comprises a transition guide rail (601) and a transition positioning frame, and a handle plate connected and fixed with a machine tool is arranged on the transition positioning frame; the transition positioning frame base is of a convex structure, the bottom surface of the convex surface is provided with a transition guide rail plate, and both sides of the transition guide rail plate are respectively provided with a U-shaped transition guide rail (601); and the two concave surfaces of the transition positioning frame base are respectively provided with a positioning plate (602), and the positioning plates (602) are of U-shaped structures.
8. The double-station loading and unloading device for round bars and cuboid workpieces as claimed in claim 7, wherein the bottom of the frame is provided with pin holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320297870.4U CN219426272U (en) | 2023-02-23 | 2023-02-23 | Double-station feeding and discharging device for round bar and cuboid workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320297870.4U CN219426272U (en) | 2023-02-23 | 2023-02-23 | Double-station feeding and discharging device for round bar and cuboid workpieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219426272U true CN219426272U (en) | 2023-07-28 |
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ID=87330805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320297870.4U Active CN219426272U (en) | 2023-02-23 | 2023-02-23 | Double-station feeding and discharging device for round bar and cuboid workpieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219426272U (en) |
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2023
- 2023-02-23 CN CN202320297870.4U patent/CN219426272U/en active Active
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