Solar cell silicon wafer silk-screen printing discharging mechanism

Abstract

The utility model discloses a solar cell silicon wafer silk-screen printing discharging mechanism which comprises a side machine frame arranged at a discharging opening in the right side of a silk-screen printing machine and a discharging conveying belt rotationally installed on the inner side of the side machine frame, and a plurality of solar cell silicon wafers completing silk-screen printing are placed on the top of the discharging conveying belt. Each adjustable guide roller assembly comprises a supporting plate fixed to the surface of the top of the side rack, a supporting guide rod movably penetrating through the supporting plate, an L-shaped frame plate fixed to the front end of the supporting guide rod and a guide roller rotationally installed at the bottom of the L-shaped frame plate; according to the utility model, a solar cell silicon wafer silk-screen printing blanking mechanism in the prior art is improved, and a plurality of adjustable guide roller assemblies are designed on the two sides of the blanking conveying belt, so that a good guiding and limiting effect on the solar cell silicon wafer can be achieved in the subsequent blanking and conveying process of the solar cell silicon wafer; deviation of the solar cell silicon wafers during discharging is prevented, and the discharging precision of the discharging mechanism is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of screen printing technology for battery silicon wafers, and specifically relates to a screen printing feeding mechanism for solar cell silicon wafers. Background Technology

[0002] In the manufacturing process of solar cells, screen printing is a crucial technology. It is primarily used to prepare electrodes, specifically by uniformly printing conductive materials (such as silver paste and aluminum paste) onto the surface of a silicon wafer to form electrode wires and grid lines. These electrodes are key structures for conducting current, and their quality directly affects the photoelectric conversion efficiency of the solar cell. In the screen printing process of solar cell silicon wafers, the feeding mechanism is a crucial component of the printing machine. For example, the prior art patent CN209796566U discloses "a feeding device for a screen printing machine, including a printing machine body, a feeding mechanism on the left side of the printing machine body, a positioning mechanism and a dust removal mechanism on the feeding mechanism, the dust removal mechanism being located to the right of the positioning mechanism, and a feeding mechanism on the right side of the printing machine body." It can be seen that the feeding mechanism located on the right side of the screen printing machine body in this application is a common type of feeding mechanism, typically a conveyor belt, which transports the screen-printed solar cell silicon wafers to the next processing stage to complete the feeding process.

[0003] In practical use, the existing solar cell silicon wafer screen printing feeding mechanism lacks any guiding or material-guiding structure on the feeding conveyor belt. This results in the solar cell silicon wafers not being properly guided and limited during feeding, easily leading to positional deviations and affecting the normal progress of subsequent processing steps, thus causing poor feeding accuracy. Therefore, this invention aims to improve and optimize the existing solar cell silicon wafer screen printing feeding mechanism to solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide a screen printing feeding mechanism for solar cell silicon wafers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screen printing feeding mechanism for solar cell silicon wafers, comprising...

[0006] A side frame is set at the right feeding port of the screen printing machine, and a feeding conveyor belt is rotatably installed inside the side frame. Multiple screen-printed solar cell silicon wafers are placed on top of the feeding conveyor belt.

[0007] The assembly includes multiple adjustable guide rollers on both sides of the feeding conveyor belt, including a support plate fixed to the top surface of the side frame, a support guide rod that moves through the support plate, an L-shaped frame plate fixed to the front end of the support guide rod, and a guide roller rotatably installed at the bottom of the L-shaped frame plate, with the guide roller at the top of the feeding conveyor belt.

[0008] Preferably, the adjustable guide roller assembly further includes a top plate movably mounted on the top surface of the support plate, a limiting block fixed at the bottom center of the top plate, and a plurality of limiting holes corresponding to the limiting block on the surface of the support guide rod, wherein the bottom end of the limiting block passes through one of the limiting holes.

[0009] Preferably, rectangular side grooves are provided on both sides of the support plate, and a movable plate is slidably disposed in the rectangular side groove. A connecting rod is fixed on the top surface of the movable plate, and the top end of the connecting rod extends through to the top of the support plate and connects with the top plate.

[0010] Preferably, a vertical pole is fixed to the inner side of the rectangular side groove, and the movable plate is slidably sleeved on the surface of the pole.

[0011] Preferably, a spring is fitted over the surface of the upright relative to the top of the movable plate.

[0012] Preferably, a top hole is provided at the top center of the support plate for the limiting block to pass through.

[0013] Preferably, a handle is fixed to the top surface of the top plate, and the handle is in the shape of an inverted U.

[0014] Preferably, a shaft is mounted on the bottom surface of the L-shaped frame plate, and the guide roller is rotatably sleeved on the shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model improves the existing solar cell silicon wafer screen printing feeding mechanism by designing multiple adjustable guide roller assemblies on both sides of the feeding conveyor belt. These assemblies can play a good guiding and limiting role for the solar cell silicon wafers during the subsequent feeding and conveying process, preventing the solar cell silicon wafers from deviating during feeding and ensuring the feeding accuracy of the feeding mechanism. At the same time, the position of the guide rollers can be adaptively adjusted according to the different sizes and specifications of solar cell silicon wafers, making it highly flexible in use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0018] Figure 3This is a schematic diagram of the adjustable guide roller assembly of this utility model;

[0019] Figure 4 This is a structural schematic diagram of the adjustable guide roller assembly of this utility model from another perspective;

[0020] Figure 5 This is a cross-sectional view of the connection between the support guide rod and the support plate of this utility model;

[0021] In the diagram: 1. Side frame; 2. Feeding conveyor belt; 3. Adjustable guide roller assembly; 31. Support plate; 32. Supporting guide rod; 33. L-shaped frame plate; 34. Guide roller; 35. Top plate; 36. Rectangular side groove; 37. Upright pole; 38. Spring; 39. Movable plate; 310. Connecting rod; 311. Limiting hole; 312. Limiting block; 4. Solar cell silicon wafer; 5. Screen printing machine. Detailed Implementation

[0022] 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.

[0023] Example

[0024] Please see Figures 1 to 5 This is an embodiment of the present invention, which provides a technical solution: a screen printing feeding mechanism for solar cell silicon wafers, comprising...

[0025] A side frame 1 is set at the feeding port on the right side of the screen printing machine 5, and a feeding conveyor belt 2 is rotatably installed inside the side frame 1. Multiple screen-printed solar cell silicon wafers 4 are placed on the top of the feeding conveyor belt 2.

[0026] The assembly includes multiple adjustable guide rollers 3 on both sides of the feeding conveyor belt 2, including a support plate 31 welded and fixed to the top surface of the side frame 1, a support guide rod 32 that movably passes through the support plate 31, an L-shaped frame plate 33 welded and fixed to the front end of the support guide rod 32, and a guide roller 34 rotatably installed at the bottom of the L-shaped frame plate 33. The guide roller 34 is located at the top of the feeding conveyor belt 2, and the bottom end of the guide roller 34 does not contact the feeding conveyor belt 2, so it will not affect the normal operation of the feeding conveyor belt 2. During the feeding process, the solar cell silicon wafers 4 on the feeding conveyor belt 2 can be guided and limited by the multiple guide rollers 34 on both sides to prevent deviation and ensure feeding accuracy.

[0027] In this embodiment, preferably, the adjustable guide roller assembly 3 further includes a top plate 35 movably mounted on the top surface of the support plate 31, a limiting block 312 welded and fixed at the bottom center of the top plate 35, and a plurality of limiting holes 311 corresponding to the limiting block 312 on the surface of the support guide rod 32. The bottom end of the limiting block 312 passes through one of the limiting holes 311, which can limit the support guide rod 32 and the support plate 31 to ensure the positional stability of the guide roller 34. Rectangular side grooves 36 are provided on both sides of the support plate 31. A movable plate 39 is slidably disposed within the groove 36. A connecting rod 310 is welded and fixed to the top surface of the movable plate 39, and the top end of the connecting rod 310 extends through to the top of the support plate 31 and connects to the top plate 35, allowing the top plate 35 to slide smoothly up and down on the top of the support plate 31. A vertical rod 37 is vertically fixed to the inner side of the rectangular side groove 36, and the movable plate 39 is slidably fitted onto the surface of the vertical rod 37, allowing the movable plate 39 to slide smoothly up and down within the rectangular side groove 36. A spring 38 is also fitted onto the surface of the vertical rod 37 relative to the top of the movable plate 39. Under the pushing force of spring 38, the bottom end of the limiting block 312 can be stably locked inside the support guide rod 32 during daily use, ensuring the limiting stability of the support guide rod 32 and the support plate 31. When it is necessary to adjust the position of the guide roller 34 laterally according to the size of the solar cell silicon wafer 4, simply lift the top plate 35 forcefully, causing the connecting rod 310 to slide upward with the movable plate 39 and compress the spring 38 until the bottom end of the limiting block 312 moves out of the limiting hole 311, thus no longer limiting the support guide rod 32. At this time, the support... Pushing the guide rod 32 allows for lateral adjustment of the L-shaped frame plate 33 and guide roller 34. Once adjusted to the appropriate position, simply release the top plate 35. Under the push of the spring 38, the movable plate 39 moves the top plate 35 down and resets via the connecting rod 310. This allows the bottom end of the limiting block 312 to engage with the limiting hole 311 in another position, thus limiting the support guide rod 32 again and quickly completing the limiting of the L-shaped frame plate 33. This allows the position of the guide roller 34 to be adaptively adjusted laterally according to actual guiding requirements.

[0028] In this embodiment, preferably, a top hole for the limiting block 312 to pass through is provided at the top center of the support plate 31.

[0029] In this embodiment, preferably, a handle is welded and fixed to the top surface of the top plate 35, and the handle is inverted U-shaped, which can facilitate the subsequent lifting operation of the top plate 35 by the operator.

[0030] In this embodiment, preferably, a shaft is installed on the bottom surface of the L-shaped frame plate 33, and the guide roller 34 is rotatably sleeved on the shaft, so that the guide roller 34 can rotate smoothly at the bottom of the L-shaped frame plate 33.

[0031] Although embodiments of the present invention have been shown and described (see the detailed description above), 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 screen printing feeding mechanism for solar cell silicon wafers, characterized in that: include A side frame (1) is set at the right side of the screen printing machine (5) and a feeding conveyor belt (2) is rotatably installed inside the side frame (1). Multiple screen-printed solar cell silicon wafers (4) are placed on the top of the feeding conveyor belt (2). And multiple adjustable guide roller assemblies (3) set on both sides of the feeding conveyor belt (2), including a support plate (31) fixed on the top surface of the side frame (1), a support guide rod (32) that moves through the support plate (31), an L-shaped frame plate (33) fixed at the front end of the support guide rod (32), and a guide roller (34) rotatably installed at the bottom of the L-shaped frame plate (33), and the guide roller (34) is located at the top of the feeding conveyor belt (2).

2. The solar cell silicon wafer screen printing feeding mechanism according to claim 1, characterized in that: The adjustable guide roller assembly (3) also includes a top plate (35) movably mounted on the top surface of the support plate (31), a limiting block (312) fixed at the bottom center of the top plate (35), and a plurality of limiting holes (311) corresponding to the limiting block (312) on the surface of the support guide rod (32), wherein the bottom end of the limiting block (312) passes through one of the limiting holes (311).

3. The solar cell silicon wafer screen printing feeding mechanism according to claim 2, characterized in that: The support plate (31) has rectangular side grooves (36) on both sides, and a movable plate (39) is slidably arranged in the rectangular side grooves (36). A connecting rod (310) is fixed on the top surface of the movable plate (39), and the top end of the connecting rod (310) extends through to the top of the support plate (31) and connects with the top plate (35).

4. The solar cell silicon wafer screen printing feeding mechanism according to claim 3, characterized in that: A vertical pole (37) is fixed to the inner side of the rectangular side groove (36), and a movable plate (39) is slidably sleeved on the surface of the pole (37).

5. The solar cell silicon wafer screen printing feeding mechanism according to claim 4, characterized in that: The surface of the upright (37) is also fitted with a spring (38) relative to the top of the movable plate (39).

6. The solar cell silicon wafer screen printing feeding mechanism according to claim 1, characterized in that: A top hole for the limiting block (312) to pass through is provided at the top center of the support plate (31).

7. The solar cell silicon wafer screen printing feeding mechanism according to claim 2, characterized in that: A handle is fixed to the top surface of the top plate (35), and the handle is in the shape of an inverted U.

8. The solar cell silicon wafer screen printing feeding mechanism according to claim 1, characterized in that: A shaft is mounted on the bottom surface of the L-shaped frame plate (33), and the guide roller (34) is rotatably sleeved on the shaft.

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