Printing system and solar cell manufacturing line
By designing a position acquisition device and controller in the printing system to perform coordinate transformation, the problem of the battery cell printing device being unable to align after screen replacement was solved, thereby increasing the production capacity of the battery cell production line.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAIAN JIETAI NEW ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-23
AI Technical Summary
When the printed pattern on the battery cells changes, the printing equipment cannot print the battery cells normally after the screen is replaced, resulting in a reduction in production line capacity.
Design a printing system comprising a position acquisition device, a transfer device, and a printing device. The position acquisition device acquires the position of the printed graphic before changing the screen, and the controller performs coordinate transformation to ensure that the screen and the battery cell are aligned, avoiding the printing device directly acquiring the initial position.
This reduced the capacity loss of the printing equipment and increased the production capacity of the battery cell production line.
Smart Images
Figure CN224392145U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of solar cell manufacturing technology, specifically to a printing system and a solar cell manufacturing production line. Background Technology
[0002] In the manufacturing process of solar cells, a printing device is used to drive the screen to move, so that the printed pattern on the screen can be aligned with the solar cell and printed. The purpose of printing is to precisely press the metal paste onto the solar cell using screen printing technology to form the electrode structure on the front and back of the solar cell.
[0003] When the printed pattern on the solar cell changes, the screen needs to be replaced. After the screen is replaced, in order to obtain the initial orientation of the printed pattern on the screen, the usual method is to collect the position of the printed pattern formed on the solar cell by the screen. During this process, the printing equipment cannot print and produce solar cells normally, resulting in a reduction in production line capacity. Utility Model Content
[0004] Therefore, it is necessary to provide a printing system and solar cell manufacturing production line that can improve production line capacity to address the above problems.
[0005] A printing system includes a first shooting station, a second shooting station, and a printing station. The printing system comprises a position acquisition device, a transfer device, and a printing device. The position acquisition device is used to capture the position of a printed pattern on a screen at the first shooting station. The transfer device is used to move a battery cell between the second shooting station and the printing station. The printing device is used to capture the position of the battery cell at the second shooting station. Furthermore, the printing device is used to move the screen mounted on the screen according to the position of the printed pattern at the first shooting station and the position of the battery cell at the second shooting station, so that the printed pattern on the screen is aligned with the battery cell at the printing station.
[0006] In some embodiments, the position acquisition device includes a position acquisition machine, a mounting frame, and a camera. The position acquisition machine has a bearing surface, on which the first shooting station is formed. The mounting frame is supported on the bearing surface, and the camera is mounted on the mounting frame and used to capture the position of the printed graphic on the screen at the first shooting station.
[0007] In some embodiments, the mounting frame includes a first bracket, a second bracket, and a connecting beam. The first bracket and the second bracket are spaced apart along the width direction of the position acquisition device. The connecting beam is installed between the first bracket and the second bracket and is slidable relative to the first bracket and the second bracket along the length direction of the position acquisition device. The camera is mounted on the connecting beam.
[0008] In some embodiments, the two opposing surfaces of the first bracket and the second bracket are recessed to form grooves, and the two opposite ends of the connecting beam are slidably inserted into the two grooves respectively.
[0009] In some embodiments, there are at least two connecting beams arranged sequentially along the length of the location acquisition platform, and each connecting beam is provided with a plurality of cameras arranged at intervals along its extension direction.
[0010] In some embodiments, the position acquisition device further includes two limiting members, which are arranged at intervals on the bearing surface along the length or width direction of the position acquisition machine, and define the first shooting position.
[0011] In some embodiments, the position acquisition device further includes two buffers, which are respectively mounted on the two surfaces of the two limiting members facing each other.
[0012] In some embodiments, the location acquisition device further includes a light source, which is mounted on the location acquisition machine or the mounting frame and is used to emit a light beam toward the first shooting position.
[0013] In some embodiments, the location acquisition device includes a main body and a transparent support plate. The main body has an open cavity, the light source is installed in the open cavity, the support plate covers the opening of the open cavity, and the first shooting position is formed on the top surface of the support plate facing away from the open cavity.
[0014] A solar cell manufacturing production line, the solar cell manufacturing production line including a printing system as described in any of the above embodiments.
[0015] Compared with the prior art, this application has the following beneficial effects:
[0016] The aforementioned printing system and solar cell manufacturing production line incorporate a position acquisition device within the printing system. This device captures the printed pattern on the screen before screen replacement, pre-determining the initial orientation of the printed pattern when the screen is installed in its initial position on the printing unit. This design eliminates the need for the printing unit to acquire the initial orientation of the printed pattern, reducing printing unit capacity loss and increasing the production capacity of the solar cell production line. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the location acquisition device in one embodiment of this application;
[0018] Figure 2 for Figure 1 The diagram shows the structure of the position acquisition device after removing the support plate, limiting component, and buffer component.
[0019] Icon labels:
[0020] 100. Location acquisition device; 200. First imaging station;
[0021] 10. Location acquisition unit; 20. Mounting frame; 30. Camera; 40. Light source;
[0022] 11. Machine body; 111. Open mouth; 12. Bearing plate; 13. Bearing surface;
[0023] 21. First support; 211. Longitudinal beam; 2111. Groove; 212. Column; 22. Second support; 23. Connecting beam; 24. Crossbeam; 25. Limiting component; 26. Buffer component;
[0024] X, length direction; Y, width direction; Z, height direction. Detailed Implementation
[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0026] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0031] In the manufacturing process of solar cells, a printing device is used to drive the screen to move, so that the printed pattern on the screen can be aligned with the solar cell and printed. The purpose of printing is to precisely press the metal paste onto the solar cell using screen printing technology to form the electrode structure on the front and back of the solar cell.
[0032] When the printed pattern on the solar cell changes, the screen needs to be replaced. After the screen is replaced, in order to obtain the initial orientation of the printed pattern on the screen, the usual method is to collect the position of the printed pattern formed on the solar cell by the screen. During this process, the printing equipment cannot print and produce solar cells normally, resulting in a reduction in production line capacity.
[0033] Please see Figure 1 and Figure 2 To alleviate the aforementioned problems, the applicant, after in-depth research, designed a printing system. The printing system includes a first imaging station 200, a second imaging station, and a printing station. The system comprises a position acquisition device 100, a transfer device, and a printing device. The position acquisition device 100 is used to capture the position of the printed pattern on the screen at the first imaging station 200. The transfer device is used to move the battery cell between the second imaging station and the printing station. The printing device is used to capture the position of the battery cell at the second imaging station, and it also moves the screen mounted on the screen according to the positions of the printed pattern on the first imaging station 200 and the battery cell at the second imaging station, so that the printed pattern on the screen is aligned with the battery cell at the printing station.
[0034] Specifically, the printing apparatus includes a controller, an imaging mechanism, and a transfer mechanism, and the controller is electrically connected to the imaging mechanism, the transfer mechanism, and the position acquisition device 100.
[0035] The screen is mounted on the printing device via a screen frame. After each screen replacement, the screen and screen frame move from their initial positions and overprint the first solar cell.
[0036] There is a coordinate transformation relationship between the initial position and the first shooting station 200. When the screen is installed on the first shooting station 200 through the screen frame, the position acquisition device 100 captures the position of the printed graphic on the screen and feeds it back to the controller. The controller converts the position fed back by the position acquisition device 100 and the coordinate transformation relationship between the initial position and the first shooting station 200 to obtain the initial orientation of the printed graphic when the screen and screen frame are in the initial position and stores it.
[0037] When a screen needs to be replaced, the screen to be replaced is mounted onto the printing unit via the screen frame and positioned in its initial position. Then, the transfer device moves the battery cell from the second imaging station to the printing station. When the battery cell is at the second imaging station, the imaging mechanism of the printing unit captures the position of the battery cell at the second imaging station and sends the image back to the controller. The controller stores the coordinate transformation relationship between the second imaging station and the printing station. Based on the position fed back by the imaging mechanism and the coordinate transformation relationship between the second imaging station and the printing station, the controller determines the position of the battery cell when it reaches the printing station. Then, based on the position of the battery cell when it reaches the printing station and the initial orientation of the printed graphic, the controller controls the transfer mechanism to move the screen and screen frame to compensate for the position of the printed graphic and the battery cell, ensuring that the printed graphic is aligned with the battery cell and registered.
[0038] In this application, all positions and orientations (i.e., locations) mentioned are referenced to the same coordinate system. For example, the coordinate system may be the actual coordinate system of the workshop environment, or it may be the motor coordinate system formed by the motor that drives the screen and frame in the transfer mechanism.
[0039] It is worth mentioning that the coordinate transformation method in this application, which uses the position of the printed pattern at the first shooting station 200 and the coordinate transformation relationship between the initial position and the first shooting station 200 to obtain the initial orientation of the printed pattern when the screen and frame are in the initial position, and the coordinate transformation method of the controller using the position of the battery cell at the second shooting station and the coordinate transformation relationship between the second shooting station and the printing station to obtain the coordinate transformation method of the battery cell when it moves to the printing station, are both conventional technical means in this field, and therefore will not be described in detail here.
[0040] By designing a position acquisition device 100 in the printing system, the printing pattern on the screen is acquired before screen replacement, and the initial orientation of the printing pattern on the screen is obtained in advance when the screen is installed in the printing device and in its initial position. This design eliminates the need to acquire the initial orientation of the printing pattern using the printing device, reducing the loss of printing device capacity and increasing the production capacity of the solar cell production line.
[0041] The transfer device and the printing device are both conventional technologies in this field, so the specific structure of the transfer device and the printing device is not limited here.
[0042] In some embodiments, the transfer device can be a rotary table, under the action of the rotary table, the battery cells are rotated from the second shooting station to the printing station. In other embodiments, the transfer device can also be in the form of a conveyor belt, under the action of the conveyor belt, the battery cells are translated from the second shooting station to the printing station.
[0043] In some embodiments, the position acquisition device 100 includes a position acquisition machine 10, a mounting frame 20, and a camera 30. The position acquisition machine 10 has a bearing surface 13, on which a first shooting station 200 is formed. The mounting frame 20 is supported on the bearing surface 13, and the camera 30 is mounted on the mounting frame 20 and is used to capture the position of the printed graphic on the screen at the first shooting station 200.
[0044] In actual operation, the screen is fixed to the first shooting station 200 by the screen frame. The camera 30 captures the position of the printed graphic on the screen and feeds it back to the controller. The controller converts the position fed back by the camera 30 and the coordinate transformation relationship between the initial position and the first shooting station 200 to obtain the initial orientation of the printed graphic when the screen and screen frame are in the initial position and stores it.
[0045] Specifically, the bearing surface 13 is the top surface of the position acquisition machine 10 and has a certain setting height. By setting the first shooting station 200 on the bearing surface 13 of the position acquisition machine 10, it is convenient for the staff to pick up and put down the screen and the screen frame. The camera 30 can take pictures of the printed pattern placed on the screen of the first shooting station 200 to obtain the position of the printed pattern on the screen. The method of obtaining the position of the printed pattern by using the camera 30 is simple and convenient, which helps to reduce the cost of the position acquisition device 100.
[0046] Furthermore, in some embodiments, the mounting frame 20 includes a first bracket 21, a second bracket 22, and a connecting beam 23. The first bracket 21 and the second bracket 22 are spaced apart along the width direction Y of the position acquisition platform 10. The connecting beam 23 is installed between the first bracket 21 and the second bracket 22 and is slidable relative to the first bracket 21 and the second bracket 22 along the length direction X of the position acquisition platform 10. The camera 30 is mounted on the connecting beam 23.
[0047] Specifically, both the first support 21 and the second support 22 include a longitudinal beam 211 and columns 212. The longitudinal beam 211 extends along the length direction X of the position acquisition platform 10. There are multiple columns 212, which are spaced apart along the length direction X of the position acquisition platform 10, and the columns 212 are connected between the bearing surface 13 and the longitudinal beam 211. A connecting beam 23 is slidably connected between the two longitudinal beams 211, and the camera 30 is mounted on the connecting beam 23.
[0048] To improve the mechanical strength of the mounting frame 20, the mounting frame 20 may also include multiple crossbeams 24. All crossbeams 24 are arranged at intervals along the length X direction of the position acquisition machine 10, and the crossbeams 24 are connected between two longitudinal beams 211.
[0049] In actual operation, the operator operates the connecting beam 23 to move the camera 30 along the length direction X of the position acquisition machine 10. The position of the camera 30 can be adjusted so that the shooting port of the camera 30 can face the printed pattern on the screen, thereby accurately acquiring the position of the printed pattern.
[0050] Furthermore, in some embodiments, the two surfaces of the first bracket 21 and the second bracket 22 that are disposed opposite to each other are recessed to form grooves 2111, and the two opposite ends of the connecting beam 23 are respectively slidably inserted into the two grooves 2111.
[0051] Specifically, the surfaces of the two longitudinal beams 211 of the first support 21 and the second support 22 facing each other are recessed to form grooves 2111, and the grooves 2111 extend along the length of the longitudinal beams 211. The two opposite ends of the connecting beam 23 are inserted into the grooves 2111 of the two longitudinal beams 211.
[0052] By setting the groove 2111, on the one hand, the groove 2111 can facilitate the quick installation of the connecting beam 23, and on the other hand, the groove 2111 can also guide the sliding of the connecting beam 23 to improve the stability of the sliding of the connecting beam 23 and the camera 30, thereby optimizing the accuracy of the position adjustment of the camera 30.
[0053] In some embodiments, there are at least two connecting beams 23 arranged sequentially along the length direction X of the position acquisition platform 10, and each connecting beam 23 is provided with a plurality of cameras 30 arranged at intervals along its extension direction.
[0054] By sliding the connecting beam 23, the spacing between two adjacent connecting beams 23 can be adjusted to change the layout of the cameras 30, so that each camera 30 can capture the position of the printed pattern. Based on the position of the printed pattern captured by each camera 30, the position of the printed pattern when the screen is in the first shooting position is obtained by averaging the coordinates (executed by the controller). The position acquisition accuracy is higher.
[0055] In some embodiments, the position acquisition device 100 further includes two limiting members 25, which are arranged at intervals on the bearing surface 13 along the length direction X or width direction Y of the position acquisition machine 10, and define a first shooting station 200.
[0056] As an example, both limiting members 25 extend along the length direction X of the position acquisition machine 10 and are spaced apart along the width direction Y of the position acquisition machine 10. The screen and frame are loaded between the two limiting members 25 by the length direction X or the height direction Z of the position acquisition machine 10, which can realize the fixation of the screen and frame at the first shooting station 200.
[0057] The two limiting components 25 work together to position and fix the screen and frame at the first shooting position 200, thereby reducing the risk of the screen and frame moving during the shooting process of the camera 30 and improving the accuracy of position acquisition.
[0058] In some embodiments, the position acquisition device 100 further includes two buffers 26, which are respectively mounted on the two surfaces of the two limiting members 25 facing each other.
[0059] As an example, the cushioning element 26 can be made of rubber, sponge, pearl cotton or other materials.
[0060] By setting two buffers 26, the two buffers 26 can work together to weaken the pressure of the two limiting parts 25 on the screen and frame, so as to avoid deformation of the screen and frame and improve the service life of the screen and frame.
[0061] In some embodiments, the location acquisition device 100 further includes a light source 40, which is mounted on the location acquisition machine 10 or the mounting frame 20 and is used to emit a light beam to the first shooting station 200.
[0062] During the shooting process, the light source 40 is turned on. The beam emitted by the light source 40 can illuminate the first shooting station 200 to compensate for insufficient ambient light, improve the clarity of the shooting, and thus accurately obtain the position of the printed graphic.
[0063] In some embodiments, the location acquisition machine 10 includes a machine body 11 and a transparent support plate 12. The machine body 11 has an open cavity 111, and a light source 40 is installed in the open cavity 111. The support plate 12 covers the opening of the open cavity 111, and a first shooting station 200 is formed on the top surface of the support plate 12 facing away from the open cavity 111.
[0064] Specifically, the part of the top surface of the main body 11 of the machine tool without the opening of the oral cavity 111 is flush with the top surface of the support plate 12 facing away from the oral cavity 111, and together they form the support surface 13. The mounting frame 20 is installed on the top surface of the position acquisition machine tool 10, and the limiting member 25 is set on the top surface of the support plate 12 facing away from the oral cavity 111.
[0065] The way the light source 40 is installed inside the open cavity 111 has two advantages. First, the light beam emitted by the light source 40 can illuminate the bearing surface 13 to improve the clarity of the image. Second, it also reduces the interference of the light source 40 on the screen and frame during the loading and unloading of the screen and frame, thus improving the loading and unloading efficiency of the screen and frame.
[0066] A solar cell manufacturing production line includes a printing system as described in any of the above embodiments. The solar cell manufacturing production line of this application has the effects of any of the above embodiments, and therefore will not be described again here.
[0067] The aforementioned printing system and solar cell manufacturing production line incorporate a position acquisition device 100 within the printing system. Before screen replacement, the device 100 acquires the printed pattern on the screen, pre-determining the initial orientation of the printed pattern when the screen is installed in its initial position on the printing unit. This design eliminates the need for the printing unit to acquire the initial orientation of the printed pattern, reducing printing unit capacity loss and increasing the production capacity of the solar cell production line.
[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A printing system, characterized in that, The printing system has a first shooting station (200), a second shooting station, and a printing station. The printing system includes a position acquisition device (100), a transfer device, and a printing device. The position acquisition device (100) is used to capture the position of the printed pattern on the screen at the first shooting station (200). The transfer device is used to move the battery cell between the second shooting station and the printing station. The printing device is used to capture the position of the battery cell at the second shooting station. The printing device is used to move the screen mounted on it according to the position of the printed pattern on the first shooting station (200) and the position of the battery cell at the second shooting station, so that the printed pattern on the screen mounted on it is aligned with the battery cell at the printing station.
2. The printing system according to claim 1, characterized in that, The position acquisition device (100) includes a position acquisition machine (10), a mounting frame (20), and a camera (30). The position acquisition machine (10) has a bearing surface (13), on which the first shooting station (200) is formed. The mounting frame (20) is supported on the bearing surface (13), and the camera (30) is mounted on the mounting frame (20) and used to capture the position of the printed graphic on the screen located at the first shooting station (200).
3. The printing system according to claim 2, characterized in that, The mounting frame (20) includes a first bracket (21), a second bracket (22), and a connecting beam (23). The first bracket (21) and the second bracket (22) are spaced apart along the width direction (Y) of the position acquisition platform (10). The connecting beam (23) is installed between the first bracket (21) and the second bracket (22) and is slidable relative to the first bracket (21) and the second bracket (22) along the length direction (X) of the position acquisition platform (10). The camera (30) is mounted on the connecting beam (23).
4. The printing system according to claim 3, characterized in that, The two surfaces of the first bracket (21) and the second bracket (22) are recessed to form grooves (2111), and the two ends of the connecting beam (23) are slidably inserted into the two grooves (2111).
5. The printing system according to claim 3, characterized in that, The connecting beams (23) are at least two and are arranged sequentially along the length direction (X) of the acquisition platform (10) at the location, and each connecting beam (23) is provided with a plurality of cameras (30) arranged at intervals along its extension direction.
6. The printing system according to claim 2, characterized in that, The position acquisition device (100) further includes two limiting members (25), which are arranged at intervals on the bearing surface (13) along the length direction (X) or width direction (Y) of the position acquisition machine (10) and define the first shooting station (200).
7. The printing system according to claim 6, characterized in that, The position acquisition device (100) also includes two buffers (26), which are respectively installed on the two surfaces of the two limiting members (25) facing each other.
8. The printing system according to claim 2, characterized in that, The location acquisition device (100) further includes a light source (40), which is mounted on the location acquisition machine (10) or the mounting frame (20) and is used to emit a light beam to the first shooting station (200).
9. The printing system according to claim 8, characterized in that, The location acquisition machine (10) includes a machine body (11) and a transparent support plate (12). The machine body (11) has an open cavity (111). The light source (40) is installed in the open cavity (111). The support plate (12) covers the opening of the open cavity (111). The first shooting station (200) is formed on the top surface of the support plate (12) facing away from the open cavity (111).
10. A solar cell manufacturing production line, characterized in that, The solar cell manufacturing production line includes a printing system as described in any one of claims 1 to 9.