CN217076353U - Printer and printing method - Google Patents
Printer and printing method Download PDFInfo
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- CN217076353U CN217076353U CN202220042276.6U CN202220042276U CN217076353U CN 217076353 U CN217076353 U CN 217076353U CN 202220042276 U CN202220042276 U CN 202220042276U CN 217076353 U CN217076353 U CN 217076353U
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Abstract
The embodiment of the application relates to printing device technical field, in particular to printer, include: a printing device; the printing device comprises a first printing component, a second printing component, a first transmission component, a second transmission component and an even number of third transmission components; any transmission component comprises a roller and a paper biting mechanism arranged on the roller, and the axes of the rollers are parallel to each other; the first printing assembly is arranged right opposite to the side surface of the roller of the first transmission assembly, and the second printing assembly is arranged right opposite to the side surface of the roller of the second transmission assembly; the rollers of the third transmission assemblies are sequentially and adjacently arranged and are positioned between the position of the roller of the first transmission assembly and the position of the roller of the second transmission assembly, and the third transmission assemblies convey the paper sent out by the first transmission assembly to the second transmission assembly; any two adjacent rollers rotate in opposite directions. The printer that this application embodiment provided can make the printer when carrying out two-sided printing, improves the printing efficiency of printer.
Description
Technical Field
The embodiment of the application relates to the technical field of printing devices, in particular to a printer.
Background
When the existing double-sided printer is used for double-sided printing, most of the paper is conveyed to a blocking mechanism by a paper conveying roller after the first side of the paper is printed, the movement direction of the paper is changed by the blocking mechanism so that the paper is turned over and moved to another paper conveying roller, and then the second side of the paper is printed when the paper is conveyed by the other paper conveying roller, so that double-sided printing is completed.
The inventor of the application finds that: when the existing double-sided printer is used for double-sided printing, the movement direction of paper needs to be changed by using a blocking mechanism, so that the speed of the paper needs to be lower during movement, and the phenomenon that the paper is easy to turn over is avoided; the printing efficiency of the existing double-sided printer is low due to the fact that the speed of the paper in motion is low.
Therefore, it is desirable to provide a printer that improves the printing efficiency of the printer when the printer performs duplex printing.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a printer, can make the printer when carrying out two-sided printing, improve the printing efficiency of printer.
In order to solve the above problem, an embodiment of the present application provides a printer, including: a printing device; the printing device comprises a first printing assembly, a second printing assembly, a first transmission assembly, a second transmission assembly and a plurality of third transmission assemblies, wherein the number of the third transmission assemblies is even; any transmission assembly comprises a roller and a paper biting mechanism arranged on the roller, and the axes of the rollers of the transmission assemblies are parallel to each other; the first printing assembly is arranged right opposite to the side surface of the roller of the first transmission assembly, and the second printing assembly is arranged right opposite to the side surface of the roller of the second transmission assembly; the rollers of the third transmission assemblies are sequentially and adjacently arranged and are positioned between the position of the roller of the first transmission assembly and the position of the roller of the second transmission assembly, and the third transmission assemblies convey the paper sent out by the first transmission assembly to the second transmission assembly; the rotating directions of the rollers of any two adjacent transmission assemblies are opposite.
In the process of double-sided printing of the printer provided by the embodiment of the application, when the roller of the first transmission assembly drives the paper to rotate, the first printing assembly prints the first side of the paper; after the printing of the first surface of the paper is finished, the rollers of the third transmission assemblies convey the paper sent out by the first transmission assemblies to the second transmission assemblies, the number of the third transmission assemblies is even, and the rotating directions of the rollers of any two adjacent transmission assemblies are opposite, so that when the rollers of the second transmission assemblies drive the paper to move, the exposed surface of the paper is the second surface of the paper, and the second surface of the paper can be printed by the second printing assemblies at the moment so as to finish the double-sided printing of the paper. The printer provided by the embodiment of the application conveys the paper sent out by the first transmission assembly to the second transmission assembly through the even number of third transmission assemblies in the process of double-sided printing, so that the speed of the paper in the movement process is higher, the turnover phenomenon is not easy to generate, and the printing efficiency of the printer is further improved. In addition, in the process that the roller of the transmission assembly drives the paper to move, the paper can be occluded by the paper occluding mechanism arranged on the roller, so that the paper is prevented from being separated from the roller.
In addition, the first printing assembly and the second printing assembly are both ink-jet printing assemblies, and both comprise a spray head; the spray head of the first printing assembly is positioned above the first transmission assembly in the gravity direction and is arranged towards the side surface of the roller of the first transmission assembly, and the spray head of the second printing assembly is positioned above the second transmission assembly in the gravity direction and is arranged towards the side surface of the roller of the second transmission assembly; the roller of the first transmission assembly and the roller of the second transmission assembly are arranged in a staggered mode in the gravity direction.
In addition, the printing apparatus further includes: and the roller of the fourth transmission assembly is adjacent to the roller of the second transmission assembly, and the fourth transmission assembly receives the paper fed out from the second transmission assembly and conveys the paper out of the printing device.
In addition, the printer further includes: the paper collecting device comprises a paper collecting synchronous belt, a first belt wheel and a second belt wheel, the paper collecting synchronous belt is wound on the first belt wheel and the second belt wheel and is in transmission connection, the first belt wheel is located obliquely above the second belt wheel, and part of the paper collecting synchronous belt attached to the second belt wheel is close to a roller of the fourth transmission assembly.
In addition, the printer further includes: the paper feeding device comprises a paper feeding belt and a paper storing mechanism, wherein one end of the paper feeding belt is adjacent to the paper storing mechanism, and the other end of the paper feeding belt is adjacent to the roller of the first transmission assembly.
The paper storage mechanism is provided on both sides of the printing apparatus in the horizontal direction, facing the first pulley.
In addition, the paper biting mechanism includes: the fixing piece, rotate piece and location axle, the fixing piece is fixed in the side of cylinder, and the one end that rotates the piece is located the one side of the axis that the cylinder was kept away from to the fixing piece, rotates the piece and rotationally sets up on the location axle, and the location axle is fixed in the cylinder, and the axis of location axle is parallel with the axis of cylinder, and fixing piece and location axle set gradually along the rotation direction of cylinder.
In addition, the paper biting mechanisms respectively arranged on any two adjacent rollers are arranged in a staggered manner in the axial direction of any roller.
In addition, the first transmission assembly is positioned obliquely above the second transmission assembly.
In addition, the number of the third transmission assemblies is two.
Drawings
FIG. 1 is a schematic structural diagram of a printer according to an embodiment of the present disclosure;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
An embodiment of the present application provides a printer, including: a printing device; the printing device comprises a first printing assembly, a second printing assembly, a first transmission assembly, a second transmission assembly and a plurality of third transmission assemblies, wherein the number of the third transmission assemblies is even; any transmission assembly comprises a roller and a paper biting mechanism arranged on the roller, and the axes of the rollers of the transmission assemblies are parallel to each other; the first printing assembly is arranged right opposite to the side surface of the roller of the first transmission assembly, and the second printing assembly is arranged right opposite to the side surface of the roller of the second transmission assembly; the rollers of the third transmission assemblies are sequentially and adjacently arranged and are positioned between the position of the roller of the first transmission assembly and the position of the roller of the second transmission assembly, and the third transmission assemblies convey the paper sent out by the first transmission assembly to the second transmission assembly; the rotating directions of the rollers of any two adjacent transmission assemblies are opposite.
Therefore, when the printer performs double-sided printing, when the roller of the first transmission assembly drives the paper to rotate, the first printing assembly prints the first side of the paper; after the printing of the first surface of the paper is finished, the rollers of the third transmission assemblies convey the paper sent out by the first transmission assemblies to the second transmission assemblies, the number of the third transmission assemblies is even, and the rotating directions of the rollers of any two adjacent transmission assemblies are opposite, so that when the rollers of the second transmission assemblies drive the paper to move, the exposed surface of the paper is the second surface of the paper, and the second surface of the paper can be printed by the second printing assemblies at the moment so as to finish the double-sided printing of the paper. The printer provided by the embodiment of the application conveys the paper sent out by the first transmission assembly to the second transmission assembly through the even number of third transmission assemblies in the process of double-sided printing, so that the speed of the paper in the movement process is higher, the turnover phenomenon is not easy to generate, and the printing efficiency of the printer is further improved. In addition, in the process that the roller of the transmission assembly drives the paper to move, the paper can be occluded by the paper occluding mechanism arranged on the roller, so that the paper is prevented from being separated from the roller.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following describes each embodiment of the present application in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in various embodiments of the present application in order to provide a better understanding of the present application. However, the technical means claimed in the present application can be realized by various changes and modifications of the following embodiments.
See fig. 1. The printer that this application embodiment provided includes: a printing device 100; the printing device 100 includes a first printing assembly 110, a second printing assembly 120, a first transmission assembly 130, a second transmission assembly 140, and a plurality of third transmission assemblies 150, wherein the number of the third transmission assemblies 150 is even; each transmission assembly comprises a roller 101 and a paper biting mechanism 102 arranged on the roller 101, and the axes of the rollers 101 of the transmission assemblies are parallel to each other; the first printing component 110 is arranged opposite to the side of the cylinder 101 of the first transmission component 130, and the second printing component 120 is arranged opposite to the side of the cylinder 101 of the second transmission component 140; the rollers 101 of the third transmission assemblies 150 are sequentially and adjacently arranged and are positioned between the position of the roller 101 of the first transmission assembly 130 and the position of the roller 101 of the second transmission assembly 140, and the third transmission assemblies 150 convey the paper fed out by the first transmission assembly 130 to the second transmission assembly 140; the rollers 101 of any two adjacent transmission assemblies rotate in opposite directions.
In the present embodiment, the number of the third transfer units 150 is two, so that the number of the plurality of third transfer units 150 can be reduced while ensuring that the printer can perform duplex printing, thereby reducing the number of parts of the printing apparatus 100 and reducing the manufacturing cost of the printing apparatus 100.
Specifically, in this embodiment, when the printer performs duplex printing, the roller 101 of the first transmission assembly 130 receives paper and drives the paper to rotate; when the cylinder 101 of the first transmission assembly 130 drives the paper to rotate, the first printing assembly 110 prints a first side of the paper; after the first printing assembly 110 finishes printing, the roller 101 of the first transmission assembly 130 transfers the paper to the roller 101 of a third transmission assembly 150 arranged adjacent to the roller 101 of the first transmission assembly 130, the roller 101 of the third transmission assembly 150 transfers the paper to the roller 101 of another third transmission assembly 150 after receiving the paper, and the roller 101 of another third transmission assembly 150 transfers the paper to the roller 101 of the second transmission assembly 140 after receiving the paper; when the cylinder 101 of the second driving assembly 140 rotates the paper, the second printing assembly 120 prints a second side of the paper.
More specifically, in any of the transmission assemblies, when the cylinder 101 receives the paper, the paper biting mechanism 102 bites the paper to ensure that the cylinder 101 can drive the paper to rotate when rotating; while the cylinder 101 transfers the paper to other components, the paper-gripping mechanism 102 releases the paper so that the paper can be released from the cylinder 101.
In this embodiment, the side of the cylinder 101 is provided with a recess, and at least part of the paper-gripping mechanism 102 is located in the recess, thereby reducing the space occupied by the transmission assembly.
In addition, in the process of transferring the paper between two adjacent rollers 101, taking the roller 101 of the first transmission assembly 130 to transfer the paper to the roller 101 of a third transmission assembly 150 arranged adjacent to the roller 101 of the first transmission assembly 130 as an example for explanation, when the roller 101 of the first transmission assembly 130 receives the paper, the paper biting mechanism 102 of the first transmission assembly 130 bites the front end of the paper in the moving direction; the roller 101 of the first transmission assembly 130 drives the paper to rotate along a first direction; when the cylinder 101 of the first transmission assembly 130 moves the front end of the sheet to a position adjacent to the cylinder 101 of the third transmission assembly 150, the paper-gripping mechanism 102 of the first transmission assembly 130 releases the front end of the sheet, and at the same time, the paper-gripping mechanism 102 of the third transmission assembly 150 grips the front end of the sheet, and the cylinder 101 of the third transmission assembly 150 drives the sheet to rotate in a second direction opposite to the first direction.
In the process, since the moving direction of the roller 101 of the first transmission assembly 130 is opposite to the moving direction of the roller 101 of the third transmission assembly 150, that is, the rotating directions of the rollers 101 of two adjacent transmission assemblies are opposite, after the paper biting mechanism 102 of the third transmission assembly 150 bites the front end of the paper, the roller 101 of the third transmission assembly 150 drives the paper to rotate in a second direction opposite to the first direction, and the paper cannot be folded.
In addition, in the present embodiment, when the paper biting mechanisms 102 of the first transmission assembly 130, the second transmission assembly 140 and the plurality of third transmission assemblies 150 bite the paper, all the paper biting mechanisms 102 bite the front end of the paper, so that when the part of the paper that is bitten by the paper biting mechanism 102 is subsequently removed, only the front end of the paper needs to be removed.
It should be noted that in other embodiments, the number of the third transmission assemblies 150 may also be four, six, eight, or other even numbers. The present application is not limited to a specific number of third drive assemblies 150.
In some embodiments, first printing assembly 110 and second printing assembly 120 are both inkjet printing assemblies, and first printing assembly 110 and second printing assembly 120 each include a jet; the spray head of the first printing assembly 110 is located above the first transmission assembly 130 in the gravity direction and is arranged towards the side of the roller 101 of the first transmission assembly 130, and the spray head of the second printing assembly 120 is located above the second transmission assembly 140 in the gravity direction and is arranged towards the side of the roller 101 of the second transmission assembly 140; the rollers of the first transmission assembly 130 and the rollers of the second transmission assembly 140 are arranged in a staggered manner in the gravity direction.
Specifically, since the third transmission assemblies 150 transmit the paper fed out by the first transmission assembly 130 to the second transmission assembly 140, the rollers of the first transmission assembly 130 and the rollers of the second transmission assembly 140 can be arranged in a staggered manner in the gravity direction by arranging the third transmission assemblies 150.
Thus, when the nozzle of the first printing element 110 is located above the first transmission element 130 in the gravity direction and is disposed toward the side of the roller 101 of the first transmission element 130, and the nozzle of the second printing element 120 is located above the second transmission element 140 in the gravity direction and is disposed toward the side of the roller 101 of the second transmission element 140, interference between the first printing element 110 and the second printing element 120 does not occur, and interference between the first printing element 110 and the second printing element 120 and any one of the transmission elements can be avoided.
In some embodiments, the printing device 100 further comprises: a fourth driving assembly 160, the cylinder 101 of the fourth driving assembly 160 being adjacent to the cylinder 101 of the second driving assembly 140, the fourth driving assembly 160 receiving the paper fed from the second driving assembly 140 and feeding the paper out of the printing device 100.
In some embodiments, the printer further comprises: the delivery device 200, the delivery device 200 includes a delivery synchronous belt 210, a first pulley 220 and a second pulley 230, the delivery synchronous belt 210 is wound on the first pulley 220 and the second pulley 230 and realizes transmission connection, the first pulley 220 is located obliquely above the second pulley 230, wherein, a part of the delivery synchronous belt 210 attached to the second pulley 230 is adjacent to the roller 101 of the fourth transmission assembly 160.
Thus, the first pulley 220 and the second pulley 230 rotate to drive the paper receiving timing belt 210 to move, so that the paper received by the fourth transmission assembly 160 is driven by the paper receiving timing belt 210 to be delivered out of the printing apparatus 100.
In some embodiments, the printer further comprises: the paper feeding device 300, the paper feeding device 300 includes a paper feeding belt 310 and a paper storing mechanism 320, one end of the paper feeding belt 310 is adjacent to the paper storing mechanism 320, and the other end is adjacent to the roller 101 of the first transmission assembly 130. In this way, the paper stored in the paper storage mechanism 320 can be transferred to the roller 101 of the first transmission assembly 130 through the paper feeding belt 310.
In some embodiments, the paper storing mechanism 320 is disposed opposite to the first pulley 220 on both sides of the printing apparatus 100 in the horizontal direction.
Thus, the paper collected by the paper collecting device 200 and the paper stored in the paper storing mechanism 320 can be prevented from overlapping in the gravity direction, so that the size of the printer in the gravity direction can be reduced.
In some embodiments, the first transmission assembly 130 is located diagonally above the second transmission assembly 140. Thus, the printing device 100 can drive the paper from top to bottom in the gravity direction in the process of driving the paper. And the roller 101 of the first transmission assembly 130 and the roller 101 of the second transmission assembly 140 can be arranged in a staggered manner in the gravity direction.
In the present embodiment, the paper path of the printing apparatus when performing duplex printing will be described by taking an example in which the paper storage mechanism 320 is located on the right side of the printing apparatus 100 and the first pulley 220 is located on the left side of the printing apparatus 100.
Specifically, the paper feeding belt 310 drives the paper in the paper storage mechanism 320 to move to the left to the roller 101 of the first transmission assembly 130; the paper biting mechanism 102 of the first transmission assembly 130 bites the front end of the paper, and the roller 101 of the first transmission assembly 130 drives the paper to rotate counterclockwise and transmits the paper to the plurality of third transmission assemblies 150; the third transmission assemblies 150 transmit the paper sheets sent out by the first transmission assembly 130 to the second transmission assembly 140; the front end of the paper is occluded by the paper occluding mechanism 102 of the second transmission component 140, and because the number of the third transmission components 150 is even and the rotating directions of the rollers 101 of any two adjacent transmission components are opposite, the rollers 101 of the second transmission component 140 drive the paper to rotate clockwise and transmit the paper to the fourth transmission component 160; the paper biting mechanism 102 of the fourth transmission assembly 160 bites the front end of the paper, and the roller 101 of the fourth transmission assembly 160 drives the paper to rotate anticlockwise; the first belt wheel 220 and the second belt wheel 230 rotate to drive the paper receiving synchronous belt 210 to move, so that the paper receiving synchronous belt 210 can drive the paper sent out by the roller 101 of the fourth transmission assembly 160 to a preset position.
More specifically, since the first pulley 220 is located on the left side of the printing apparatus 100, the first pulley 220 and the second pulley 230 need to rotate clockwise to facilitate the paper receiving synchronous belt 210 to receive paper, at this time, since the cylinder 101 of the fourth transmission assembly 160 drives the paper to rotate counterclockwise, and the second pulley 230 of the cylinder 101 adjacent to the fourth transmission assembly 160 rotates clockwise, that is, the rotation directions of the cylinder 101 of the fourth transmission assembly 160 and the second pulley 230 are opposite, the paper folding phenomenon of the paper receiving synchronous belt 210 can be avoided when receiving paper.
Continuing with fig. 1, and with reference to fig. 2. In some embodiments, paper-biting mechanism 102 includes: the fixing device comprises a fixing piece 103, a rotating piece 104 and a positioning shaft 105, wherein the fixing piece 103 is fixed on the side surface of the roller 101, one end of the rotating piece 104 is positioned on one side, away from the axis of the roller 101, of the fixing piece 103, the rotating piece 104 is rotatably arranged on the positioning shaft 105, the positioning shaft 105 is fixed on the roller 101, the axis of the positioning shaft 105 is parallel to the axis of the roller 101, and the fixing piece 103 and the positioning shaft 105 are sequentially arranged along the rotating direction of the roller.
Thus, when the front end of the paper is located between one end of the rotating member 104 and the fixed member 103, the rotating member 104 can rotate to reduce the distance between one end of the rotating member 104 and the fixed member 103, and one end of the rotating member 104 and the fixed member 103 can clamp the front end of the paper together, so that the paper biting mechanism 102 bites the paper. When the paper biting mechanism 102 needs to release the paper, the rotating member 104 can rotate in the opposite direction to increase the distance between one end of the rotating member 104 and the fixed member 103, so as to release the front end of the paper.
With continued reference to fig. 1. In some embodiments, the paper-nipping mechanisms 102 respectively provided on any two adjacent cylinders 101 are arranged offset in the axial direction of any cylinder 101. In this way, when the two adjacent rollers 101 rotate, the interference of the paper gripping mechanisms 102 respectively provided on any two adjacent rollers 101 can be avoided.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the present application, and that various changes in form and details may be made therein without departing from the spirit and scope of the present application in practice. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the application, and it is intended that the scope of the application be limited only by the claims appended hereto.
Claims (10)
1. A printer, comprising: a printing device;
the printing device comprises a first printing assembly, a second printing assembly, a first transmission assembly, a second transmission assembly and a plurality of third transmission assemblies, wherein the number of the third transmission assemblies is even; any one of the transmission assemblies comprises a roller and a paper biting mechanism arranged on the roller, and the axes of the rollers of the transmission assemblies are parallel to each other;
the first printing assembly is arranged right opposite to the side surface of the roller of the first transmission assembly, and the second printing assembly is arranged right opposite to the side surface of the roller of the second transmission assembly;
the rollers of the third transmission assemblies are sequentially and adjacently arranged and are positioned between the position of the roller of the first transmission assembly and the position of the roller of the second transmission assembly, and the third transmission assemblies convey the paper sent out by the first transmission assembly to the second transmission assembly; the rotating directions of the rollers of any two adjacent transmission assemblies are opposite.
2. The printer of claim 1, wherein the first printing assembly and the second printing assembly are each inkjet printing assemblies, the first printing assembly and the second printing assembly each including a nozzle; the spray head of the first printing assembly is positioned above the first transmission assembly in the gravity direction and is arranged towards the side surface of the roller of the first transmission assembly, and the spray head of the second printing assembly is positioned above the second transmission assembly in the gravity direction and is arranged towards the side surface of the roller of the second transmission assembly; and the roller of the first transmission assembly and the roller of the second transmission assembly are arranged in a staggered manner in the gravity direction.
3. The printer according to claim 1, wherein the printing device further comprises: a fourth drive assembly having a cylinder adjacent the cylinder of the second drive assembly, the fourth drive assembly receiving the sheet fed from the second drive assembly and conveying the sheet out of the printing device.
4. The printer according to claim 3, further comprising: the paper collecting device comprises a paper collecting synchronous belt, a first belt wheel and a second belt wheel, wherein the paper collecting synchronous belt is wound on the first belt wheel and the second belt wheel and is in transmission connection, the first belt wheel is located above the second belt wheel in an inclined mode, and the paper collecting synchronous belt is adjacent to a roller of the fourth transmission assembly.
5. The printer according to claim 4, further comprising: the paper feeding device comprises a paper feeding belt and a paper storage mechanism, wherein one end of the paper feeding belt is adjacent to the paper storage mechanism, and the other end of the paper feeding belt is adjacent to the roller of the first transmission assembly.
6. The printer according to claim 5, wherein the paper storing mechanism is provided on both sides of the printing device in the horizontal direction opposite to the first pulley.
7. The printer of claim 1, wherein the paper-nipping mechanism comprises: fixing part, rotation piece and location axle, the fixing part is fixed in the side of cylinder, the one end of rotating the piece is located the fixing part is kept away from one side of the axis of cylinder, it rotationally sets up to rotate the epaxial in location, the location axle is fixed in the cylinder, just the axis of location axle with the axis of cylinder is parallel, the fixing part and the location axle is followed the rotation direction of cylinder sets gradually.
8. The printer according to claim 1, wherein the sheet-nipping mechanisms respectively provided on any two adjacent cylinders are disposed in a staggered manner in an axial direction of any of the cylinders.
9. The printer of claim 1, wherein said first drive assembly is located diagonally above said second drive assembly.
10. The printer of claim 1, wherein the number of third drive assemblies is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220042276.6U CN217076353U (en) | 2022-01-07 | 2022-01-07 | Printer and printing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220042276.6U CN217076353U (en) | 2022-01-07 | 2022-01-07 | Printer and printing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217076353U true CN217076353U (en) | 2022-07-29 |
Family
ID=82542159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220042276.6U Active CN217076353U (en) | 2022-01-07 | 2022-01-07 | Printer and printing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217076353U (en) |
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2022
- 2022-01-07 CN CN202220042276.6U patent/CN217076353U/en active Active
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