Feeding and conveying device for silk-screen printing of solar cells

Abstract

The utility model discloses a solar cell screen printing feeding and conveying device which comprises a feeding and conveying mechanism used for a silicon wafer A. The feeding and conveying mechanism comprises a fixing frame, a conveying motor connected with the fixing frame, a belt wheel connected with the inner side wall of the fixing frame and a conveying belt arranged on the outer side of the belt wheel in a sleeving mode. The fixing box is connected with the surface of the bottom of the fixing frame, a switch control box is arranged on the surface of the fixing box, and a partition plate is arranged in the fixing box; according to the cleaning device, an anti-static structure for preventing a silicon wafer workpiece from adsorbing dust is arranged, when a silicon wafer A is conveyed, the started water pump sucks and conveys cleaning liquid in the fixed box, and finally the cleaning liquid is sprayed out from the spraying air nozzle, so that the effect of cleaning dust and impurities on the surface of the conveying belt is achieved, and damage caused by the fact that the silicon wafer A adsorbs the impurities is avoided; and the started exhaust fan exhausts hot air in the fixed box, so that the hot air is finally sprayed out from the air nozzle, and the purpose of drying the surface of the conveying belt is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of feeding and conveying devices, specifically relating to a feeding and conveying device for solar cell screen printing. Background Technology

[0002] In the production and manufacturing of solar cells, screen printing is a crucial step. Screen printing utilizes the basic principle that ink passes through the mesh openings in the graphic areas of the screen, while the non-graphic areas are not. During the screen printing process, a feeding and conveying device is required. Conveyor belts are a commonly used feeding and conveying device, primarily used to transport silicon wafers from one process to another. The lower inclined end or unloading end of the conveyor belt is connected to the screen printing table to ensure that the silicon wafers are accurately delivered to the printing position, completing the solar cell screen printing process.

[0003] The conveyor belt works by using a motor to drive pulleys to rotate, which in turn drives a belt to rotate, transporting silicon wafers to the screen printing table for screen printing. However, during this process, the silicon wafers may generate static electricity due to friction, attracting dust and impurities from the air, potentially damaging them. Since the wafers are exposed without any shielding, dust and impurities can settle on the belt surface. If static electricity is generated, the wafers will attract these dust and impurities, causing damage. Furthermore, the conveyor belt lacks anti-static design, failing to prevent the wafers from attracting dust and impurities, which is a drawback.

[0004] When existing conveyor belts transport silicon wafers, there is a problem that the conveyor belts do not have an anti-static structure to prevent dust from adhering to the silicon wafers. To address this, this application proposes a solar cell screen printing feeding and conveying device. Utility Model Content

[0005] The purpose of this invention is to provide a solar cell screen printing feeding and conveying device to solve the problem mentioned in the background art of the lack of an anti-static structure on the conveyor belt to prevent dust from adsorbing onto silicon wafers.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solar cell screen printing feeding and conveying device, comprising...

[0007] The feeding and conveying mechanism for silicon wafer A includes a fixed frame, a conveying motor connected to the fixed frame, a pulley connected to the inner wall of the fixed frame, and a conveying belt sleeved on the outside of the pulley.

[0008] A fixed box connected to the bottom surface of the fixed frame, a switch control box is provided on the surface of the fixed box, a partition plate is provided inside the fixed box, and a heating rod is provided between the partition plate and the inner side wall of the fixed box;

[0009] The warm air delivery assembly includes an exhaust fan connected to the side of the fixed box, an air delivery pipe with one end connected to the inside of the exhaust fan, a gas distribution pipe fixedly connected to the fixed frame, and a jet nozzle connected to the inside of the gas distribution pipe.

[0010] The spray wetting assembly includes a water pump connected to the side of the fixed box, a liquid distribution pipe connected to the output end of the water pump, and a spray nozzle connected to the inside of the liquid distribution pipe.

[0011] The wiping assembly includes a mounting plate connected to a mounting bracket and a wiping pad adhered to the surface of the mounting plate by adhesive.

[0012] Preferably, the partition plate divides the internal space of the fixed box into a liquid storage chamber A and a warm air chamber B, the heating rod is located in the warm air chamber B, the water pump is connected to the liquid storage chamber A, and the exhaust fan is connected to the warm air chamber B.

[0013] Preferably, an air inlet is provided on the surface of the fixed box, and an air intake barrier net is connected to the fixed box inside the air inlet.

[0014] Preferably, the path for the exhaust fan to deliver warm air is, in sequence, a fixed box, an exhaust fan, an air supply pipe, a gas diversion pipe, and a jet nozzle.

[0015] Preferably, the path for the water pump to deliver liquid is, in sequence, a fixed box, a water pump, a liquid distribution pipe, and a spray nozzle.

[0016] Preferably, the mounting plate includes support plates at both ends and a corrugated plate at the center, and the wiping pad is attached to the surface of the corrugated plate.

[0017] Preferably, a cover plate is connected between the opposing surfaces of the fixing frame, and an anti-static component is provided on the cover plate. The anti-static component includes a grounding wire passing through the cover plate, a connecting piece connected to one end of the grounding wire, a fixing plate connected to one end of the connecting piece, and a contact cylinder connected to one end of the fixing plate. An anti-static connecting belt is connected between the opposing conveyor belts.

[0018] Preferably, the two ends of the contact cylinder are tapered structures, the connecting piece and the symmetrically distributed fixing plates form an "I" shaped structure, and the contact cylinder is tangent to the antistatic connecting strip.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] In this invention, when conveying silicon wafer A, the activated water pump draws in the easily evaporable cleaning liquid accumulated inside the fixed box and delivers it to the liquid distribution pipe, where it is then sprayed out from the spray nozzle. This achieves the effect of cleaning dust and impurities on the surface of the conveyor belt, preventing silicon wafer A from being damaged by adsorbing impurities. In addition, the spraying of the mist-like moist cleaning liquid can reduce the generation of static electricity. The activated exhaust fan exhausts the hot air inside the fixed box, allowing the hot air to travel along the air supply pipe and the gas distribution pipe before being sprayed out from the air nozzle, achieving the purpose of drying the surface of the conveyor belt. This invention has an anti-static structure that prevents the silicon wafer workpiece from adsorbing dust. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a side view of the fixed box of this utility model.

[0023] Figure 3 This is a cross-sectional view of the fixing box of this utility model;

[0024] Figure 4 This is a top view of the fixing frame of this utility model;

[0025] Figure 5 This is a side view of the cover plate of this utility model.

[0026] Figure 6 This is a three-dimensional structural diagram of the contact cylinder of this utility model;

[0027] In the diagram: 2. Fixed box; 3. Cover plate; 4. Grounding wire; 11. Fixed frame; 12. Conveyor motor; 13. Pulley; 14. Conveyor belt; 21. Switch control box; 22. Air intake barrier net; 23. Divider plate; 24. Heating heater; 51. Exhaust fan; 52. Gas pipeline; 53. Gas diversion pipeline; 54. Air nozzle; 61. Water pump; 62. Liquid diversion pipeline; 63. Spray nozzle; 71. Connecting piece; 72. Fixed plate; 73. Contact cylinder; 81. Mounting plate; 82. Wiping pad; 141. Antistatic connecting strip. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figures 1 to 4 This utility model provides a technical solution: a solar cell screen printing feeding and conveying device, including a feeding and conveying mechanism for silicon wafer A, comprising a fixed frame 11, a conveying motor 12 connected to the fixed frame 11, a pulley 13 connected to the inner wall of the fixed frame 11, and a conveying belt 14 sleeved on the outside of the pulley 13. The pulleys 13 distributed on one side of the fixed frame 11 are connected to the output shaft of the corresponding conveying motor 12, and the pulleys 13 on the other side are connected to the fixed frame 11 via a fixed shaft. A bearing is connected between the pulley 13 and the fixed shaft. When the conveying motor 12 starts, the conveying motor 12 drives the pulley 13 to rotate, and the belt... Wheel 13 drives conveyor belt 14 to rotate, achieving the purpose of conveying silicon wafer A. The structure and principle of conveyor belt conveying items are conventional technical means, and will not be described in detail in this application. Fixed box 2 is connected to the bottom surface of fixed frame 11. The surface of fixed box 2 is provided with switch control box 21. Fixed box 2 is fixed to fixed frame 11 and switch control box 21 by screws. The interior of fixed box 2 is provided with partition plate 23. Partition plate 23 is welded to fixed box 2. Heating rod 24 is provided between partition plate 23 and inner wall of fixed box 2. Heating rod 24 is connected to switch control box 21 by conventional electrical connection technology. When the heating element 24 is activated, it heats the air inside the fixed box 2 and generates hot air. The hot air delivery assembly includes an exhaust fan 51 connected to the side of the fixed box 2, an air supply pipe 52 with one end connected to the inside of the exhaust fan 51, a gas distribution pipe 53 fixedly connected to the fixed frame 11, and a jet nozzle 54 connected to the inside of the gas distribution pipe 53. The fixed box 2 and the exhaust fan 51 are fixed with screws, and the exhaust fan 51 and the air supply pipe 52 are sealed with glue. When the exhaust fan 51 is activated, it exhausts the hot air inside the fixed box 2, allowing the hot air to travel along the air supply pipe 52 and the gas distribution pipe 53 before exiting the box. The jet nozzle 54 sprays out to dry the surface of the conveyor belt 14; the spray wetting component includes a water pump 61 connected to the side of the fixed box 2, a liquid diversion pipe 62 connected to the output end of the water pump 61, and a spray nozzle 63 connected to the inside of the liquid diversion pipe 62. The water pump 61 is fixed to the fixed box 2 with screws. After the water pump 61 is started, the water pump 61 draws and transports the easily evaporable cleaning liquid, such as hydrocarbon cleaning agent, accumulated inside the fixed box 2 to the liquid diversion pipe 62 and then sprays it out from the spray nozzle 63 to achieve the effect of cleaning dust and impurities on the surface of the conveyor belt 14, and avoids silicon wafer A from adsorbing impurities and causing damage.

[0031] The wiping assembly includes a mounting plate 81 connected to a fixing frame 11 and a wiping pad 82 glued to the surface of the mounting plate 81. The mounting plate 81 is fixed to the fixing frame 11 by screws. The wiping pad 82 contacts the conveyor belt 14 to remove impurities from the surface of the conveyor belt 14.

[0032] In this embodiment, the partition plate 23 divides the internal space of the fixed box 2 into a liquid storage chamber A and a warm air chamber B. The heating electric rod 24 is located in the warm air chamber B. After the heating electric rod 24 is started, hot air will be generated in the warm air chamber B. The water pump 61 is connected to the liquid storage chamber A, and the exhaust fan 51 is connected to the warm air chamber B. After the water pump 61 is started, the water pump 61 will draw in the cleaning liquid to achieve the effect of cleaning the impurities on the surface of the conveyor belt 14.

[0033] In this embodiment, an air inlet is provided on the surface of the fixed box 2, and an air intake barrier net 22 is connected inside the air inlet of the fixed box 2. The gas inside and outside the fixed box 2 forms convection, which does not affect the flow of gas.

[0034] In this embodiment, the path of the exhaust fan 51 to deliver warm air is as follows: fixed box 2, exhaust fan 51, air supply pipe 52, gas diversion pipe 53, and jet nozzle 54. The exhaust fan 51 discharges the hot air inside the fixed box 2, and the hot air is sprayed out from the jet nozzle 54 along the air supply pipe 52 and the gas diversion pipe 53, so as to achieve the purpose of drying the surface of the conveyor belt 14.

[0035] In this embodiment, the path for the water pump 61 to deliver liquid is as follows: fixed box 2, water pump 61, liquid diversion pipe 62, and spray nozzle 63. After the water pump 61 is started, it draws in the easily evaporable cleaning liquid, such as hydrocarbon cleaning agent, accumulated inside the fixed box 2 and delivers it to the liquid diversion pipe 62, and then sprays it out from the spray nozzle 63 to achieve the effect of cleaning dust and impurities on the surface of the conveyor belt 14, and avoids damage caused by impurities adsorbed on the silicon wafer A.

[0036] In this embodiment, the mounting plate 81 includes support plates at both ends and a corrugated plate at the center. The wiping pad 82 is attached to the surface of the corrugated plate and contacts the conveyor belt 14 to remove impurities from the surface of the conveyor belt 14.

[0037] In summary: the conveyor motor 12 drives the pulley 13 to rotate, the pulley 13 drives the conveyor belt 14 to rotate and convey the silicon wafer A. After the water pump 61 is started, the water pump 61 draws and delivers the easily evaporable cleaning liquid accumulated inside the fixed box 2 to the liquid diversion pipe 62 and then sprays it out from the spray nozzle 63, achieving the effect of cleaning dust and impurities on the surface of the conveyor belt 14, avoiding damage to the silicon wafer A due to the adsorption of impurities. In addition, the spraying of mist-like moist cleaning liquid can reduce the generation of static electricity. The wiping pad 82 wipes the impurities on the surface of the conveyor belt 14. The started exhaust fan 51 exhausts the hot air inside the fixed box 2, so that the hot air is sprayed out from the air nozzle 54 along the air supply pipe 52 and the gas diversion pipe 53, achieving the purpose of drying the surface of the conveyor belt 14. It has an anti-static structure to prevent the silicon wafer workpiece from adsorbing dust.

[0038] Example 2

[0039] Please see Figures 1 to 6This is the second embodiment of the present invention. Based on the previous embodiment, in order to increase the anti-static effect, a cover plate 3 is connected between the opposing surfaces of the fixing frame 11. The cover plate 3 is fixed to the fixing frame 11 by screws. An anti-static component is provided on the cover plate 3. The anti-static component includes a grounding wire 4 passing through the cover plate 3, a connecting piece 71 connected to one end of the grounding wire 4, a fixing plate 72 connected to one end of the connecting piece 71, and a contact cylinder 73 connected to one end of the fixing plate 72. An anti-static connecting belt 141 is connected between the opposing conveyor belts 14. The anti-static connecting belt 141 and the conveyor belt 14 are integrally formed. The contact cylinder 73 is in contact with the anti-static connecting belt 141. The fixing plate 72 and the connecting piece 71, which are made of metal materials, are conductive. Electricity is poured into the ground from the grounding wire 4 to achieve the anti-static effect.

[0040] In this embodiment, the two ends of the contact cylinder 73 are tapered structures, and the connecting piece 71 and the symmetrically distributed fixing plate 72 form an "I" shaped structure. The contact cylinder 73 is tangent to the antistatic connecting strip 141, and the contact cylinder 73 can conduct the static electricity generated on the antistatic connecting strip 141.

[0041] In summary: the antistatic connecting belt 141, contact cylinder 73, fixing plate 72, connecting piece 71, and grounding wire 4 are connected in series to form an electrostatic channel, which can quickly release the static electricity generated between silicon wafer A and conveyor belt 14, thus protecting silicon wafer A.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solar cell screen printing feeding and conveying device, characterized in that: include The feeding and conveying mechanism for silicon wafer A includes a fixed frame (11), a conveying motor (12) connected to the fixed frame (11), a pulley (13) connected to the inner wall of the fixed frame (11), and a conveying belt (14) sleeved on the outside of the pulley (13). A fixed box (2) is connected to the bottom surface of the fixed frame (11). A switch control box (21) is provided on the surface of the fixed box (2). A partition plate (23) is provided inside the fixed box (2). A heating rod (24) is provided between the partition plate (23) and the inner side wall of the fixed box (2). The warm air delivery assembly includes an exhaust fan (51) connected to the side of the fixed box (2), an air delivery pipe (52) with one end connected to the inside of the exhaust fan (51), a gas distribution pipe (53) fixedly connected to the fixed frame (11), and a jet nozzle (54) connected to the inside of the gas distribution pipe (53). The spray wetting assembly includes a water pump (61) connected to the side of the fixed box (2), a liquid distribution pipe (62) connected to the output end of the water pump (61), and a spray nozzle (63) connected to the inside of the liquid distribution pipe (62). The wiping assembly includes a mounting plate (81) connected to a mounting bracket (11) and a wiping pad (82) glued to the surface of the mounting plate (81).

2. The solar cell screen printing feeding and conveying device according to claim 1, characterized in that: The partition plate (23) divides the internal space of the fixed box (2) into a liquid storage chamber A and a warm air chamber B. The heating electric rod (24) is located in the warm air chamber B. The water pump (61) is connected to the liquid storage chamber A, and the exhaust fan (51) is connected to the warm air chamber B.

3. The solar cell screen printing feeding and conveying device according to claim 1, characterized in that: An air inlet is provided on the surface of the fixed box (2), and an air intake barrier net (22) is connected to the fixed box (2) inside the air inlet.

4. The solar cell screen printing feeding and conveying device according to claim 1, characterized in that: The path through which the exhaust fan (51) delivers warm air is, in sequence, a fixed box (2), an exhaust fan (51), an air supply pipe (52), a gas diversion pipe (53), and a jet nozzle (54).

5. The solar cell screen printing feeding and conveying device according to claim 1, characterized in that: The path through which the water pump (61) delivers liquid is, in sequence, a fixed box (2), a water pump (61), a liquid diversion pipe (62), and a spray nozzle (63).

6. The solar cell screen printing feeding and conveying device according to claim 1, characterized in that: The mounting plate (81) includes support plates at both ends and a corrugated plate at the center, and the wiping pad (82) is attached to the surface of the corrugated plate.

7. The solar cell screen printing feeding and conveying device according to claim 1, characterized in that: A cover plate (3) is connected between the opposing surfaces of the fixed frame (11). An anti-static component is provided on the cover plate (3). The anti-static component includes a grounding wire (4) that passes through the cover plate (3), a connecting piece (71) connected to one end of the grounding wire (4), a fixing plate (72) connected to one end of the connecting piece (71), and a contact cylinder (73) connected to one end of the fixing plate (72). An anti-static connecting strip (141) is connected between the opposing conveyor belts (14).

8. The solar cell screen printing feeding and conveying device according to claim 7, characterized in that: The two ends of the contact cylinder (73) are tapered structures, the connecting piece (71) and the symmetrically distributed fixing plate (72) form an "I" shaped structure, and the contact cylinder (73) is tangent to the antistatic connecting strip (141).

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