Dust removal device of photovoltaic solar cell screen printing machine

Abstract

The utility model discloses a photovoltaic solar cell screen printing machine dust removal device which comprises a machine frame and a dust removal assembly arranged on the machine frame, the machine frame is arranged at the feeding end of a screen printing machine, a conveying belt is arranged on the machine frame, and the conveying belt is used for conveying cell pieces to the screen printing machine. The dust removal assembly comprises a static electricity generation rod and an adsorption plate, the static electricity generation rod is horizontally arranged above the conveying belt in the width direction of the conveying belt, the adsorption plate is arranged on the side, right facing the conveying belt, of the static electricity generation rod, and the static electricity generation rod applies static electricity to the adsorption plate. The dust removal assembly is arranged on the conveying belt at the feeding end of the screen printing machine, dust, particles or fragments and other foreign matter attached to the surfaces of battery pieces can be effectively removed through the dust removal assembly, the printing quality of the battery pieces is guaranteed, and the quality of solar battery products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic solar cell screen printing, in particular to a dust removal device for a photovoltaic solar cell screen printer. Background Art

[0002] Photovoltaic solar cells are devices that convert solar energy into electrical energy. Due to their environmental protection and energy-saving characteristics, they are attracting more and more attention. Photovoltaic solar cell metallization is a key process that can effectively improve the conversion efficiency of photovoltaic cells and ensure their normal operation. The metallization process mainly includes three steps: paste printing, high-temperature sintering, and light injection; paste printing refers to the use of screen printing to print silver paste and silver aluminum paste onto the surface of the cell.

[0003] In the past, screen printers were exposed to the air more often, and the presence of dust in the environment would affect the quality of the slurry printing process. As product quality requirements continue to increase, production is usually carried out in a dust-free workshop, but the solar cell manufacturing workshop cannot achieve true dust-free.

[0004] Since dust or suspended particles will adhere to the surface of the battery cell, and sometimes even small fragments produced when the battery cell is damaged, both of these will have a significant impact on the yield and efficiency of solar cells; the latter may even cause perforation and cracking of the screen during screen printing, causing huge economic losses. Utility Model Content

[0005] The utility model aims to provide a photovoltaic solar cell screen printing machine dust removal device to address the problem that foreign matter attached to the surface of the cell during the screen printing process may affect the product quality. The device can effectively remove foreign matter such as dust, particles or fragments attached to the surface of the cell, ensure the printing quality of the cell, and improve the quality of the solar cell product.

[0006] The utility model is realized by the following technical solutions:

[0007] The utility model provides a dust removal device for a photovoltaic solar cell screen printer, comprising a frame and a dust removal component arranged on the frame, the frame being arranged at the feed end of the screen printer, a conveyor belt being arranged on the frame, the conveyor belt being used to convey the battery sheets toward the screen printer, the dust removal component comprising an electrostatic generating rod and an adsorption plate, the electrostatic generating rod being horizontally arranged above the conveyor belt along the width direction of the conveyor belt, the adsorption plate being arranged on a side of the electrostatic generating rod facing the conveyor belt, and the electrostatic generating rod applying static electricity to the adsorption plate.

[0008] In some embodiments, a first mounting frame is disposed on the frame, and the static electricity generating rod is disposed on the first mounting frame.

[0009] In some embodiments, the position of the static electricity generating bar on the first mounting frame is adjustable to change its height relative to the conveyor belt.

[0010] In some embodiments, the dust removal assembly further includes a wiping structure for wiping the surface of the battery cell, the wiping structure is disposed above the conveyor belt, and the wiping structure is located on a side of the static electricity generating rod away from the screen printer.

[0011] In some embodiments, the wiping structure includes a second mounting frame and a wiping cloth, the second mounting frame is fixedly mounted on the frame, the wiping cloth is arranged on the second mounting frame, and the lower edge of the wiping cloth contacts the surface of the battery cell to form wiping.

[0012] In some embodiments, a counterweight rod is disposed at the lower edge of the wiping cloth, and the lower edge of the wiping cloth wraps around the counterweight rod.

[0013] In some embodiments, an adjustment plate is disposed on the second mounting frame, the adjustment plate is rotatably connected to the second mounting frame, and the adjustment plate is used to change the height of the lower edge of the wiping cloth relative to the conveyor belt after rotation.

[0014] In some embodiments, there are two conveyor belts, which are arranged in parallel and at the same height on opposite sides of the frame.

[0015] In some embodiments, each of the conveyor belts includes a driving wheel and a driven wheel, and the driving wheels and the driven wheels of the two conveyor belts are respectively connected through axles, and also include a driving component, and the driving component is used to drive the conveyor belt to move.

[0016] In some embodiments, the driving assembly includes a motor and a driving wheel, wherein the driving wheel is disposed on an axle connecting two driving wheels, and an output shaft of the motor forms a transmission connection with the driving wheel to drive the axle to rotate.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] The utility model arranges a dust removal component on the conveyor belt at the feeding end of the screen printing machine, and the dust removal component includes a wiping structure and an electrostatic dust removal structure arranged in sequence along the conveying direction of the battery cell. When working, the battery cell moves toward the feeding end of the screen printing machine along the conveyor belt. In the process of conveying the battery cell, the lower edge of the wiping cloth first contacts the surface of the battery cell to wipe the foreign matter on the surface of the battery cell, and then static electricity is applied to the adsorption plate through the electrostatic generating rod to further adsorb the foreign matter on the surface of the battery cell. The dust removal device can effectively remove foreign matter such as dust, particles or fragments attached to the surface of the battery cell, ensure the printing quality of the battery cell, and improve the quality of solar cell products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 It is a schematic top view of the dust removal device of the photovoltaic solar cell screen printing machine in the utility model;

[0021] Figure 2 It is a schematic diagram of the front view of the dust removal device of the photovoltaic solar cell screen printing machine in the utility model;

[0022] Figure 3 for Figure 1 A magnified schematic diagram of the AA direction in FIG.

[0023] Figure 4 for Figure 1 An enlarged schematic diagram of the BB direction;

[0024] Figure 5 for Figure 4 Enlarged schematic diagram of the CC direction in .

[0025] Marks and corresponding parts names in the attached drawings:

[0026] 1-frame, 2-conveyor belt, 21-driving wheel, 22-driven wheel, 23-axle, 24-motor, 25-driving wheel, 3-static generating rod, 4-adsorption plate, 5-first mounting frame, 51-waist-shaped hole, 52-bolt, 6-second mounting frame, 61-suspension plate, 62-arc slide groove, 7-wiping cloth, 71-counterweight rod, 8-adjusting plate, 81-fixing rod, 82-rotating rod, 83-nut. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the utility model and their descriptions are only used to explain the utility model and are not intended to limit the utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0029] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0032] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0033] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces), unless otherwise clearly and specifically defined.

[0034] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] Please refer to Figures 1 to 5 A dust removal device for a photovoltaic solar cell screen printer provided in an embodiment of the present application includes a frame 1 and a dust removal component arranged on the frame 1, wherein the frame 1 is arranged at the feed end of the screen printer, and a conveyor belt 2 is arranged on the frame 1, and the conveyor belt 2 is used to convey the battery cells toward the screen printer. The dust removal component includes an electrostatic generating rod 3 and an adsorption plate 4, wherein the electrostatic generating rod 3 is horizontally arranged above the conveyor belt 2 along the width direction of the conveyor belt 2, and the adsorption plate 4 is arranged on the side of the electrostatic generating rod 3 facing the conveyor belt 2, and the electrostatic generating rod 3 applies static electricity to the adsorption plate 4.

[0037] The frame 1 is arranged before the feeding end of the screen printer, and a conveyor belt 2 is arranged on the frame 1. The battery cells enter from the feeding end of the conveyor belt 2, and then move toward the screen printer along with the conveyor belt 2, and slide onto the feeding belt of the screen printer at the unloading end of the conveyor belt 2. The static electricity generating rod 3 and the adsorption plate 4 constitute an electrostatic dust removal structure. When in use, the static electricity generating rod 3 is powered by a power supply, and static electricity is applied to the adsorption plate 4 by the static electricity generating rod 3. When the battery cells pass under the adsorption plate 4 along with the conveyor belt 2, the adsorption plate 4 carries static electricity, which can adsorb dust and tiny particles on the surface of the battery cells, thereby reducing foreign matter on the surface of the battery cells.

[0038] It should be noted that the static electricity generating rod 3 is horizontally arranged along the width direction of the conveyor belt 2, and its length is greater than the size of the battery cell along the width direction of the conveyor belt; the adsorption plate 4 is arranged on the lower side of the static electricity generating rod 3, and its length is adapted to the static electricity generating rod 3, so as to ensure that the foreign matter on the surface of the battery cell can be adsorbed. It should be noted that the internal structure principle of the static electricity generating rod 3 itself belongs to the existing technology, and the mature products on the market can be directly selected, or they can be modified according to the layout requirements, such as changing the installation and fixing method of the static electricity generating rod 3.

[0039] According to some embodiments of the present application, a first mounting frame 5 is provided on the frame 1, and the static electricity generating rod 3 is provided on the first mounting frame 5. Specifically, the first mounting frame 5 includes two L-shaped plates arranged on both sides of the frame 1, the lower ends of the two L-shaped plates are fixedly connected to the frame 1, and the two ends of the static electricity generating rod 3 are connected to the two L-shaped plates by bolts 52, so that the static electricity generating rod 3 is installed above the conveyor belt 2.

[0040] According to some embodiments of the present application, the position of the static electricity generating rod 3 on the first mounting frame 5 is adjustable to change its height relative to the conveyor belt 2. Specifically, waist-shaped holes 51 extending vertically are provided on the two L-shaped plates of the first mounting frame 5, and during installation, bolts 52 are passed through the waist-shaped holes 51 and connected to the static electricity generating rod 3. When the bolts 52 are moved along the waist-shaped holes 51, the installation height of the static electricity generating rod 3 can be adjusted, thereby changing the distance of the adsorption plate 4 relative to the battery sheet on the conveyor belt 2.

[0041] According to some embodiments of the present application, the dust removal assembly also includes a wiping structure for wiping the surface of the battery cell, and the wiping structure is arranged above the conveyor belt 2, and the wiping structure is located on the side of the electrostatic generating rod 3 away from the screen printer. Since the wiping structure is arranged in front of the electrostatic generating rod 3, when the battery cell moves with the conveyor belt 2, it must first pass through the wiping structure to wipe its surface. By wiping, foreign matter adhering to the surface of the battery cell can be loosened, or some large particles can be directly wiped off. After wiping, the foreign matter on the surface of the battery cell is reduced, and then the battery cell is subjected to electrostatic adsorption and dust removal, which is conducive to improving the efficiency of removing foreign matter on the surface of the battery cell.

[0042] According to some embodiments of the present application, the wiping structure includes a second mounting frame 6 and a wiping cloth 7, wherein the second mounting frame 6 is fixedly mounted on the frame 1, and the wiping cloth 7 is mounted on the second mounting frame 6, and the lower edge of the wiping cloth 7 contacts the surface of the battery cell to form a wipe. During operation, the battery cell moves toward the feed end of the screen printer along with the conveyor belt 2, and during the conveyance of the battery cell, the surface of the battery cell contacts and is wiped by the lower edge of the wiping cloth 7.

[0043] Specifically, the second mounting frame 6 includes two L-shaped plates arranged on both sides of the frame 1, the lower ends of the two L-shaped plates are fixedly connected to the frame 1, and a hanging plate 61 is connected between the upper ends of the two L-shaped plates. The top of the wiping cloth 7 is fixedly set on the hanging plate 61 by bonding, or by crimping with screws, magnets, etc. The wiping cloth 7 is in a suspended state, and its lower edge contacts the surface of the battery cell to form a wipe. It should be noted that the size of the wiping cloth 7 along the width direction of the conveyor belt 2 is adapted to the battery cell, so as to ensure that the foreign matter on the surface of the battery cell can be wiped.

[0044] According to some embodiments of the present application, a counterweight rod 71 is provided at the lower edge of the wiping cloth 7, and the lower edge of the wiping cloth 7 wraps the counterweight rod 71. By providing the counterweight rod 71 at the lower part of the wiping cloth 7, a certain contact force can be created between the wiping cloth 7 and the surface of the battery cell, thereby improving the wiping effect on the surface of the battery cell.

[0045] According to some embodiments of the present application, an adjustment plate 8 is provided on the second mounting frame 6, and the adjustment plate 8 is rotatably connected to the second mounting frame 6, and the adjustment plate 8 is used to change the height of the lower edge of the wiping cloth 7 relative to the conveyor belt 2 after rotation. By rotatably connecting the adjustment plate 8 to the second mounting frame 6, the wiping cloth 7 can be lifted up after rotating the adjustment plate 8, so that the distance between the lower edge of the wiping cloth 7 and the surface of the battery cell changes, so that the inclination angle of the adjustment plate 8 can be changed according to the thickness of the battery cell, so that the lower edge of the wiping cloth 7 is slightly lower than the surface of the battery cell, which can not only form pressure wiping on the surface of the battery cell, but also avoid the end surface of the battery cell pushing the counterweight rod 71 to move significantly to the left, thereby facilitating the battery cell to enter between the lower edge of the wiping cloth 7 and the conveyor belt 2.

[0046] It should be noted that after the thickness of the battery cell changes, if the height of the bottom edge of the wiping cloth 7 is not adjusted, it is possible that the bottom edge of the wiping cloth 7 is significantly lower than the surface of the battery cell, that is, the bottom edge of the wiping cloth 7 is close to the bottom surface of the battery cell. At this time, when the battery cell moves with the conveyor belt 2 to the wiping cloth 7, the end face of the battery cell will push the counterweight rod 71 to move significantly to the left, which is not conducive to the battery cell quickly entering between the bottom edge of the wiping cloth 7 and the conveyor belt 2.

[0047] Specifically, the two ends of the adjustment plate 8 are respectively connected to the two L-shaped plates on the second mounting frame 6. A fixing rod 81 and a rotating rod 82 are provided in parallel at the ends of the adjustment plate 8. The fixing rod 81 and the rotating rod 82 both pass through the L-shaped plate. An arc-shaped slide groove 62 is provided on the L-shaped plate. The rotating rod 82 is provided in the arc-shaped slide groove 62. The center of the arc-shaped slide groove 62 coincides with the center of the fixing rod 81. A nut 83 is provided at the end of the rotating rod 82. The position of the adjustment plate 8 is locked by rotating and screwing the nut 83 into contact with the outer side of the L-shaped plate and pressing it.

[0048] According to some embodiments of the present application, there are two conveyor belts 2, which are arranged in parallel and at the same height on opposite sides of the frame 1. The two conveyor belts 2 have the same movement direction and speed, that is, the two side areas of the battery cell along the width direction of the conveyor belt 2 are in contact with the two conveyor belts 2.

[0049] According to some embodiments of the present application, each of the conveyor belts 2 includes a driving wheel 21 and a driven wheel 22, and the driving wheels 21 and the driven wheels 22 of the two conveyor belts 2 are respectively connected through a wheel axle 23, and also include a driving assembly, and the driving assembly is used to drive the conveyor belt 2. During operation, the two driving wheels 21 are driven to rotate synchronously through the driving assembly, so that the two conveyor belts 2 operate synchronously.

[0050] According to some embodiments of the present application, the driving assembly includes a motor 24 and a driving wheel 25, wherein the driving wheel 25 is disposed on a wheel shaft 23 connecting two driving wheels 21, and an output shaft of the motor 24 forms a transmission connection with the driving wheel 25 to drive the wheel shaft 23 to rotate, thereby driving the two driving wheels 21 to rotate, so that the conveyor belt 2 operates. Specifically, the output shaft of the motor 24 can form a transmission connection with the driving wheel 25 through a chain drive or a belt drive.

[0051] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A dust removal device for a photovoltaic solar cell screen printer, characterized in that: It includes a frame and a dust removal component arranged on the frame, the frame is arranged at the feed end of the screen printing machine, a conveyor belt is arranged on the frame, and the conveyor belt is used to transport the battery cells toward the screen printing machine. The dust removal component includes an electrostatic generating rod and an adsorption plate, the electrostatic generating rod is horizontally arranged above the conveyor belt along the width direction of the conveyor belt, the adsorption plate is arranged on the side of the electrostatic generating rod facing the conveyor belt, and the electrostatic generating rod applies static electricity to the adsorption plate.

2. The photovoltaic solar cell screen printer dust removal device according to claim 1, characterized in that: The frame is provided with a first mounting frame, and the static electricity generating rod is arranged on the first mounting frame.

3. The dust removal device for photovoltaic solar cell screen printing machine according to claim 2, characterized in that: The position of the static electricity generating bar on the first mounting bracket is adjustable to change its height relative to the conveyor belt.

4. The photovoltaic solar cell screen printer dust removal device according to any one of claims 1 to 3, characterized in that: The dust removal assembly also includes a wiping structure for wiping the surface of the battery cell. The wiping structure is arranged above the conveyor belt, and the wiping structure is located on a side of the static electricity generating rod away from the screen printer.

5. The dust removal device for photovoltaic solar cell screen printer according to claim 4, characterized in that: The wiping structure includes a second mounting frame and a wiping cloth, wherein the second mounting frame is fixedly mounted on the frame, the wiping cloth is mounted on the second mounting frame, and the lower edge of the wiping cloth contacts the surface of the battery cell to form wiping.

6. The dust removal device for photovoltaic solar cell screen printer according to claim 5, characterized in that: A counterweight rod is arranged at the lower edge of the wiping cloth, and the lower edge of the wiping cloth wraps the counterweight rod.

7. The dust removal device for photovoltaic solar cell screen printer according to claim 6, characterized in that: The second mounting frame is provided with an adjustment plate, the adjustment plate is rotatably connected to the second mounting frame, and the adjustment plate is used to change the height of the lower edge of the wiping cloth relative to the conveyor belt after rotation.

8. The photovoltaic solar cell screen printer dust removal device according to any one of claims 1 to 3, characterized in that: The conveyor belts are provided with two belts, which are arranged in parallel and at the same height on two opposite sides of the frame.

9. The dust removal device for photovoltaic solar cell screen printer according to claim 8, characterized in that: Each of the conveyor belts comprises a driving wheel and a driven wheel. The driving wheels and the driven wheels of the two conveyor belts are respectively connected via axles. The conveyor belts also comprise a driving assembly, which is used to drive the conveyor belts to move.

10. The dust removal device for photovoltaic solar cell screen printer according to claim 9, characterized in that: The driving assembly includes a motor and a driving wheel. The driving wheel is arranged on an axle connecting two driving wheels. The output shaft of the motor forms a transmission connection with the driving wheel to drive the axle to rotate.

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