CN212355470U - Circulating transmission mechanism for turnover part of optical fiber connector - Google Patents
Circulating transmission mechanism for turnover part of optical fiber connector Download PDFInfo
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- CN212355470U CN212355470U CN202021383472.7U CN202021383472U CN212355470U CN 212355470 U CN212355470 U CN 212355470U CN 202021383472 U CN202021383472 U CN 202021383472U CN 212355470 U CN212355470 U CN 212355470U
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- head end
- transfer
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- tail end
- guide rail
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Abstract
The utility model discloses a circulating transmission mechanism for optical fiber connector turnover parts, which comprises a frame, wherein a head end transfer device, a station transmission device, a tail end transfer device and a rotary transmission device are arranged on the frame; the rotary conveying device is arranged above the station conveying device; the head end transfer device is arranged between the head end of the station conveying device and the tail end of the rotary conveying device; the tail end transfer device is arranged between the tail end of the station conveying device and the head end of the rotary conveying device; the head end passes on the guide rail station conveying guide rail the tail end passes on the guide rail with the gyration conveying guide rail constitutes the circulation transmission line, install the turnover mount pad on the circulation transmission line, the fixed follower castellated plate that is equipped with on the turnover mount pad. The utility model discloses rational in infrastructure, realized that automatic conveying and head and the tail between the station loopback automatically, improved turnover cyclic utilization efficiency.
Description
Technical Field
The utility model relates to a conveying equipment technical field especially relates to a fiber connector turnover piece circulation transport mechanism.
Background
The existing optical fiber production and manufacturing processes are multiple, workers are required to carry turnover parts such as carriers or clamps between stations to and fro, time and labor are consumed, and inconsistent or even uncoordinated phenomena easily exist between head and tail operations. Meanwhile, the turnover parts such as carriers or clamps which need to be recycled cannot flow back to the initial station well, the next production is carried out again, manual turnover is needed, and the overall recycling efficiency of the turnover parts is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a rational in infrastructure is provided, can realize automatic conveying between the station and the automatic loopback between end to end, improve the fiber connector turnover piece circulation transport mechanism of turnover cyclic utilization efficiency.
In order to solve the technical problem, the technical scheme of the utility model is that: the circulating transmission mechanism for the turnover part of the optical fiber connector comprises a rack, wherein a head end transfer device, a station transmission device, a tail end transfer device and a rotary transmission device are arranged on the rack;
the station conveying device comprises a station conveying guide rail fixedly arranged on the rack, a station conveying toothed belt is mounted on the rack, and a station conveying driver is arranged between the station conveying toothed belt and the rack;
the rotary conveying device is arranged above the station conveying device and comprises a rotary conveying guide rail fixedly arranged on the rack, a rotary conveying toothed belt is arranged on the rack, and a rotary conveying driver is arranged between the rotary conveying toothed belt and the rack;
the head end transfer device is arranged between the head end of the station conveying device and the tail end of the rotary conveying device and comprises a head end lifting frame which is vertically and slidably installed on the rack, a head end transfer guide rail which can be in butt joint with the station conveying guide rail and the rotary conveying guide rail is fixedly arranged on the head end lifting frame, and a head end lifting driver is arranged between the head end lifting frame and the rack; a head end transfer toothed belt is installed on the head end lifting frame, and a head end transfer driver is arranged between the head end transfer toothed belt and the head end lifting frame;
the tail end transfer device is arranged between the tail end of the station conveying device and the head end of the rotary conveying device and comprises a tail end lifting frame which is vertically and slidably installed on the rack, a tail end transfer guide rail which can be in butt joint with the station conveying guide rail and the rotary conveying guide rail is fixedly arranged on the tail end lifting frame, and a tail end lifting driver is arranged between the tail end lifting frame and the rack; a tail end transfer toothed belt is installed on the tail end lifting frame, and a tail end transfer driver is arranged between the tail end transfer toothed belt and the tail end lifting frame;
the head end passes on the guide rail station conveying guide rail the tail end passes on the guide rail with the gyration conveying guide rail constitutes the circulation transmission line, install at least one turnover mount pad on the circulation transmission line, fixed be equipped with on the turnover mount pad can with the head end passes on the toothed belt station conveying toothed belt terminal passes on the toothed belt or the follow-up castellated plate that the meshing of gyration conveying toothed belt is connected.
As a preferable technical scheme, the station transmission driver comprises two station transmission belt wheels rotatably mounted on the frame, a station transmission toothed belt is mounted between the two station transmission belt wheels, and a station transmission driving motor is arranged between at least one of the station transmission belt wheels and the frame; the rotary conveying driver comprises two rotary conveying belt wheels which are rotatably arranged on the rack, a rotary conveying toothed belt is arranged between the two rotary conveying belt wheels, and a rotary conveying driving motor is arranged between at least one rotary conveying belt wheel and the rack; the head end transfer driver comprises two head end transfer belt wheels which are rotatably arranged on the head end lifting frame, a head end transfer toothed belt is arranged between the two head end transfer belt wheels, and a head end transfer driving motor is arranged between at least one head end transfer belt wheel and the head end lifting frame; the tail end transfer driver comprises two tail end transfer belt wheels rotatably arranged on the tail end lifting frame, the tail end transfer toothed belt is arranged between the two tail end transfer belt wheels, and a tail end transfer driving motor is arranged between at least one tail end transfer belt wheel and the tail end lifting frame.
As the preferred technical scheme, the rack, the head end lifting frame and the tail end lifting frame are provided with engaging pressing plates.
As a preferable technical scheme, the head end transfer toothed belt, the station transfer toothed belt, the tail end transfer toothed belt and the rotary transfer toothed belt are double-sided toothed belts.
As preferred technical scheme, be equipped with head end lifting detector, head end descending detector, terminal descending detector and terminal lifting detector in the frame, be equipped with the gyration detector that targets in place on the head end crane, be equipped with the completion detector that targets in place on the terminal crane, head end lifting detector head descending detector terminal lifting detector the gyration detector that targets in place with the completion detector that targets in place is connected with transmission controller, transmission controller's output is connected station transmission driver gyration transmission driver the head end forwards the driver the terminal forwards the driver head end lifting driver with terminal lifting driver.
Since the technical scheme is used, the head end forwards the guide rail the end forwards the lift and the butt joint of guide rail, make the head end forwards the guide rail the station conveying guide rail the end forwards the guide rail with the gyration conveying guide rail constitutes the circulation transmission line. The meshing transmission of the toothed belt can enable the turnover mounting seat to form power continuation when being transmitted between different guide rails. The utility model discloses rational in infrastructure, realized that automatic conveying and head and the tail between the station loopback automatically, improved turnover cyclic utilization efficiency.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a schematic perspective view of another perspective of the embodiment of the present invention;
fig. 3 is a schematic perspective view of the head end transfer guide rail according to the embodiment of the present invention;
fig. 4 is a schematic perspective view of the turnover mount pad according to the embodiment of the present invention.
In the figure: 1-a frame; 2-a head end transfer device; 21-a head end transfer guide rail; 22-head end transfer toothed belt; 23-a head end transfer pulley; 24-head end forwarding driving motor; 25-head end lifting frame; 26-a head end lift drive; 27-head end lift detector; 28-a slewing in-position detector; 29-head end drop detector; 3-a station conveying device; 31-station transfer guide rails; 32-station conveying toothed belts; 33-station conveyor belt wheel; 34-a station conveying driving motor; 4-an end transfer device; 41-end transfer rail; 42-end transfer toothed belt; 43-a tail end transfer pulley; 44-end relay drive motor; 45-end lifting frame; 46-a terminal lift drive; 47-end lift detector; 48-completion-in-place detector; 49-end drop detector; 5-a carousel; 51-a slewing conveying guide rail; 52-a rotary conveying toothed belt; 53-a slewing belt pulley; 54-a rotary transfer drive motor; 6-turnover mounting base; 61-follow-up toothed plate; 62-a guide wheel; 7-engaging the pressure holding plate.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, exemplary embodiments of the invention are described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1 to 4, the circulating transmission mechanism for the fiber connector turnaround member includes a frame 1, and the frame 1 is generally an assembly of aluminum profiles and plate members, etc., which is well known to those skilled in the art, and will not be described herein again and the entire structure is not shown in the drawings. The frame 1 is provided with a head end transfer device 2, a station transfer device 3, a tail end transfer device 4 and a rotary transfer device 5.
Station conveyer 3 for will have enough to meet the need the piece and convey between the station, including fixed the setting station transfer rail 31 in frame 1, install station conveying toothed belt 32 on the frame 1, station conveying toothed belt 32 with be equipped with station transmission driver between the frame 1.
The rotary conveying device 5 is arranged above the station conveying device 3 and used for conveying the turnover part back to the initial position, and comprises a rotary conveying guide rail 51 fixedly arranged on the rack 1, a rotary conveying toothed belt 52 is arranged on the rack 1, and a rotary conveying driver is arranged between the rotary conveying toothed belt 52 and the rack 1.
The head end transfer device 2 is arranged between the head end of the station conveying device 3 and the tail end of the rotary conveying device 5 and is used for transferring the turnover piece returned by the rotary conveying device 5 to the station conveying device 3; the device comprises a head end lifting frame 25 which is vertically and slidably installed on the rack 1, wherein a head end transfer guide rail 21 which can be in butt joint with the station transfer guide rail 31 and the rotary transfer guide rail 51 is fixedly arranged on the head end lifting frame 25, and a head end lifting driver 26 is arranged between the head end lifting frame 25 and the rack 1; the head end lifting frame 25 is provided with a head end transfer toothed belt 22, and a head end transfer driver is arranged between the head end transfer toothed belt 22 and the head end lifting frame 25. The head end transfer guide rail 21 may be butted against the station transfer guide rail 31 and the revolving transfer guide rail 51, respectively, and it should be understood that the head end transfer guide rail and the station transfer guide rail 31 or the revolving transfer guide rail 51 may form a single integral guide rail together when they are in the same straight line, which may be realized by designing the guide rails to have the same structure and specification.
The tail end transfer device 4 is arranged between the tail end of the station conveying device 3 and the head end of the rotary conveying device 5 and is used for transferring the rotary piece output by the station conveying device 3 to the rotary conveying device 5 for returning after the workpiece is processed; the device comprises a tail end lifting frame 45 vertically and slidably mounted on the rack 1, wherein a tail end transfer guide rail 41 which can be in butt joint with the station conveying guide rail 31 and the rotary conveying guide rail 51 is fixedly arranged on the tail end lifting frame 45, and a tail end lifting driver 46 is arranged between the tail end lifting frame 45 and the rack 1; the tail end lifting frame 45 is provided with a tail end transfer toothed belt 42, and a tail end transfer driver is arranged between the tail end transfer toothed belt 42 and the tail end lifting frame 45.
Head end transfer guide rail 21 the station transfer guide rail 31 terminal transfer guide rail 41 with gyration transfer guide rail 51 constitutes the circulation transmission line, install at least one turnover mount pad 6 on the circulation transmission line, turnover mount pad 6 is used for installing turnover spare. A follow-up toothed plate 61 which can be meshed and connected with the head end transfer toothed belt 22, the station transfer toothed belt 32, the tail end transfer toothed belt 42 or the rotary transfer toothed belt 52 is fixedly arranged on the turnover mounting seat 6. When the head end transfer toothed belt 22, the station transfer toothed belt 32, the tail end transfer toothed belt 42 or the rotary transfer toothed belt 52 are driven to move, the following toothed plate 61 can be driven to slide on the guide rail due to meshing connection. When the following toothed plate 61 spans between two adjacent toothed belts, such as between the first-end transfer toothed belt 22 and the station conveying toothed belt 32, the front end of the following toothed plate 61 in the sliding direction firstly leaves the first-end transfer toothed belt 22, but the rear end is always driven by the toothed belt due to the meshing action, the following toothed plate 61 slides between the guide rails, the front end of the following toothed plate 61 finally forms the meshing with the station conveying toothed belt 32, and after the meshing action, the rear end leaves the first-end transfer toothed belt 22, so that the effective cruising driven by the toothed belt is formed. The same principle is applied to driving endurance among other toothed belts.
In this embodiment, the head end transfer guide rail 21, the station transfer guide rail 31, the tail end transfer guide rail 41 and the revolving transfer guide rail 51 all adopt the form of two arc-shaped guide rails arranged oppositely, and this embodiment shows that round steel is fixedly installed on two groove walls of a guide groove respectively, and the round steel protrudes out of the part of the corresponding groove wall to form the arc-shaped guide rail. Four leading wheels 62 of installation are changeed on the turnover mount pad 6, all set up on the leading wheel 62 with the arc annular that the arc guide rail corresponds. Two of them leading wheel 62 sets up with left side arc guide rail contact, two of the other leading wheel 62 sets up with right side arc guide rail contact, and with the leading wheel 62 of left side arc guide rail contact and the leading wheel 62 of right side arc guide rail contact, mutual staggered arrangement.
The station transmission driver in this embodiment includes two station transmission belt wheels 33 rotatably mounted on the frame 1, the station transmission toothed belt 32 is mounted between the two station transmission belt wheels 33, and a station transmission driving motor 34 is disposed between at least one of the station transmission belt wheels 33 and the frame 1. This arrangement is readily understood by those skilled in the art and will not be described in detail herein.
The rotary conveying driver, the head end transferring driver and the tail end transferring driver are basically the same in structural arrangement as the station conveying driver. The rotary transmission driver comprises two rotary transmission belt wheels 53 which are rotatably arranged on the frame 1, a rotary transmission toothed belt 52 is arranged between the two rotary transmission belt wheels 53, and a rotary transmission driving motor 54 is arranged between at least one of the rotary transmission belt wheels 53 and the frame 1; the head end transfer driver comprises two head end transfer belt wheels 23 rotatably arranged on the head end lifting frame 25, a head end transfer toothed belt 22 is arranged between the two head end transfer belt wheels 23, and a head end transfer driving motor 24 is arranged between at least one head end transfer belt wheel 23 and the head end lifting frame 25; the tail end transfer driver comprises two tail end transfer belt pulleys 43 rotatably arranged on the tail end lifting frame 45, the tail end transfer toothed belt 42 is arranged between the two tail end transfer belt pulleys 43, and a tail end transfer driving motor 44 is arranged between at least one tail end transfer belt pulley 43 and the tail end lifting frame 45.
The difference between the above four drivers is that the station conveying driving motor 34 rotates forward, and the rotary conveying driving motor 54 rotates backward; the head end transfer drive motor 24 rotates in the reverse direction when it is lifted and rotates in the forward direction when it is lowered, and the tail end transfer drive motor 44 rotates in the reverse direction when it is lifted and rotates in the forward direction when it is lowered.
In this embodiment, the rack 1, the head end lifting frame 25 and the tail end lifting frame 45 are provided with a meshing pressing and holding plate 7, and the meshing pressing and holding plate 7 can ensure that the toothed belt and the follow-up toothed plate 61 are in effective meshing connection, so that the stability of power transmission is ensured. In this embodiment, the head end transfer toothed belt 22, the station transfer toothed belt 32, the tail end transfer toothed belt 42 and the revolving transfer toothed belt 52 are double-sided toothed belts, so that the transmission of power from the toothed belt wheels to the corresponding toothed belts is more reliable.
Through the structural description, the present embodiment can separately manufacture the guide rail, the toothed belt corresponding to the guide rail, the meshing holding plate 7 corresponding to the toothed belt, the driver and other structures into one transmission module. When the rack 1 or the head end lifting frame 25 or the tail end lifting frame 45 is installed, the conveying module is only required to be integrally installed. The structure of the head end transfer rail 21 illustrated in fig. 3 in this embodiment is a structure of a transfer module. Whereas the number of processing stations through which the station conveyor 3 may pass may be plural and the overall length may be long, those skilled in the art will recognize that the station conveyor 3 may be formed by installing two or more of the conveying modules.
This embodiment be equipped with head end lift detector 27, head end fall detector 29, terminal fall detector 49 and terminal lift detector 47 on the frame 1, be equipped with the gyration on the head end crane 25 and target in place detector 28, be equipped with the completion detector 48 that targets in place on the terminal crane 45, head end lift detector 27 head end fall detector 29 terminal fall detector 49 terminal rise detector 47 gyration target in place detector 28 with completion detector 48 is connected with transmission controller, transmission controller's output is connected station transmission driver gyration transmission driver the head end forwards the driver the terminal end forwards the driver head end lift driver 26 with terminal lift driver 46.
In the initial stage of this embodiment, the revolving mount 6 is located on the head end transfer guide rail 21, the head end crane 25 and the tail end crane 45 are in the lowered low position, and the head end transfer guide rail, the station transfer guide rail 31 and the tail end transfer guide rail 41 form a complete transfer track. The head end transfer drive motor 24, the station transfer drive motor 34 and the tail end transfer drive motor 44 are started and are all positive. The turnover installation seat 6 slides from the head end transfer guide rail 21 to the station transfer guide rail 31, and in the process of the station transfer guide rail 31, the station transfer driving motor 34 can be suspended at a designated station according to needs to complete station operation. After completion, the revolving installation base 6 is finally completely sent to the tail end transfer guide rail 41, at this time, the completion in-place detector 48 triggers a signal, the head end transfer driving motor 24, the station transfer driving motor 34 and the tail end transfer driving motor 44 stop, the tail end lifting driver 46 and the head end lifting driver 26 respectively drive the tail end lifting frame 45 and the head end lifting frame 25 to lift until the tail end lifting detector 47 and the head end lifting detector 27 trigger a signal, and the tail end lifting frame 45 and the head end lifting frame 25 are lifted to a high position, at this time, the tail end transfer guide rail 41, the revolving transfer guide rail 51 and the head end transfer guide rail 21 form a complete transfer track. The tail end transfer drive motor 44, the slewing drive motor 54 and the head end transfer drive motor 24 are started and all are reversed. The turnover mount 6 is from the end transfers the guide rail 41 to be loopbacked all the time to the head end transfers on the guide rail 21, the gyration detector 28 trigger signal that targets in place, the end transfers driving motor 44, gyration transmission driving motor 54 and the head end transfers driving motor 24 and all stops, head end lift driver 26 with end lift driver 46, the drive respectively the head end crane 25 with end crane 45 descends, until the head end descends detector 29 and end descending detector 49 trigger signal, head end crane 25 with end crane 45 all descends to initial low level position, accomplishes the circulation of a turnover spare so far.
In this embodiment, the revolving transfer guide rail 51 is disposed above the station transfer guide rail 31, and the head end crane 25 and the tail end crane 45 are lifted, so that the head end transfer guide rail 21 and the tail end transfer guide rail 41 can form different guide rail paths with the station transfer guide rail 31 and the revolving transfer guide rail 51, respectively, and together form a closed-loop movement path of the revolving member. Power continuation between different guide rails is realized through meshing connection between the toothed belts. The automatic cyclic utilization of turnover spare is finally realized to this embodiment, and is rational in infrastructure, has realized automatic conveying between the station and has returned automatically between head and the tail, has improved turnover spare cyclic utilization efficiency.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. Optical fiber connector week changes a circulation transport mechanism, including the frame, its characterized in that: the frame is provided with a head end transfer device, a station transfer device, a tail end transfer device and a rotary transfer device;
the station conveying device comprises a station conveying guide rail fixedly arranged on the rack, a station conveying toothed belt is mounted on the rack, and a station conveying driver is arranged between the station conveying toothed belt and the rack;
the rotary conveying device is arranged above the station conveying device and comprises a rotary conveying guide rail fixedly arranged on the rack, a rotary conveying toothed belt is arranged on the rack, and a rotary conveying driver is arranged between the rotary conveying toothed belt and the rack;
the head end transfer device is arranged between the head end of the station conveying device and the tail end of the rotary conveying device and comprises a head end lifting frame which is vertically and slidably installed on the rack, a head end transfer guide rail which can be in butt joint with the station conveying guide rail and the rotary conveying guide rail is fixedly arranged on the head end lifting frame, and a head end lifting driver is arranged between the head end lifting frame and the rack; a head end transfer toothed belt is installed on the head end lifting frame, and a head end transfer driver is arranged between the head end transfer toothed belt and the head end lifting frame;
the tail end transfer device is arranged between the tail end of the station conveying device and the head end of the rotary conveying device and comprises a tail end lifting frame which is vertically and slidably installed on the rack, a tail end transfer guide rail which can be in butt joint with the station conveying guide rail and the rotary conveying guide rail is fixedly arranged on the tail end lifting frame, and a tail end lifting driver is arranged between the tail end lifting frame and the rack; a tail end transfer toothed belt is installed on the tail end lifting frame, and a tail end transfer driver is arranged between the tail end transfer toothed belt and the tail end lifting frame;
the head end passes on the guide rail station conveying guide rail the tail end passes on the guide rail with the gyration conveying guide rail constitutes the circulation transmission line, install at least one turnover mount pad on the circulation transmission line, fixed be equipped with on the turnover mount pad can with the head end passes on the toothed belt station conveying toothed belt terminal passes on the toothed belt or the follow-up castellated plate that the meshing of gyration conveying toothed belt is connected.
2. The fiber optic connector transfer module carousel of claim 1, wherein: the station transmission driver comprises two station transmission belt wheels which are rotatably arranged on the rack, a station transmission toothed belt is arranged between the two station transmission belt wheels, and a station transmission driving motor is arranged between at least one of the station transmission belt wheels and the rack; the rotary conveying driver comprises two rotary conveying belt wheels which are rotatably arranged on the rack, a rotary conveying toothed belt is arranged between the two rotary conveying belt wheels, and a rotary conveying driving motor is arranged between at least one rotary conveying belt wheel and the rack; the head end transfer driver comprises two head end transfer belt wheels which are rotatably arranged on the head end lifting frame, a head end transfer toothed belt is arranged between the two head end transfer belt wheels, and a head end transfer driving motor is arranged between at least one head end transfer belt wheel and the head end lifting frame; the tail end transfer driver comprises two tail end transfer belt wheels rotatably arranged on the tail end lifting frame, the tail end transfer toothed belt is arranged between the two tail end transfer belt wheels, and a tail end transfer driving motor is arranged between at least one tail end transfer belt wheel and the tail end lifting frame.
3. The fiber optic connector transfer module carousel of claim 1, wherein: and the rack, the head end lifting frame and the tail end lifting frame are provided with meshing pressing plates.
4. The fiber optic connector transfer module carousel of claim 1, wherein: the head end transfer toothed belt, the station transfer toothed belt, the tail end transfer toothed belt and the rotary transfer toothed belt are double-sided toothed belts.
5. The fiber optic connector transfer module carousel of claim 1, wherein: be equipped with head end lifting detector, head end descending detector, terminal descending detector and terminal lifting detector in the frame, be equipped with the gyration on the head end crane and target in place the detector, be equipped with the completion detector that targets in place on the terminal crane, the head end lifting detector the head end descending detector the terminal lifting detector the gyration target in place the detector with the completion target in place the detector and be connected with transmission controller, transmission controller's output is connected station transmission driver the gyration transmission driver the head end forwards the driver the terminal forwards the driver head end lifting driver with terminal lifting driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021383472.7U CN212355470U (en) | 2020-07-14 | 2020-07-14 | Circulating transmission mechanism for turnover part of optical fiber connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021383472.7U CN212355470U (en) | 2020-07-14 | 2020-07-14 | Circulating transmission mechanism for turnover part of optical fiber connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212355470U true CN212355470U (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021383472.7U Active CN212355470U (en) | 2020-07-14 | 2020-07-14 | Circulating transmission mechanism for turnover part of optical fiber connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212355470U (en) |
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2020
- 2020-07-14 CN CN202021383472.7U patent/CN212355470U/en active Active
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