Lifting type return tank body structure for double-row type electroplating horizontal line

Abstract

The utility model discloses a lift type return tank body structure for a double-row electroplating horizontal line, which comprises a process tank body, a tank body underframe and two groups of deplating return tank bodies, the process tank body is arranged above the tank body underframe, and the two groups of deplating return tank bodies are arranged in the tank body underframe. A lifting transmission system and a horizontal transmission system are arranged in the deplating return tank body, the lifting transmission system forms a transmission frame through a connecting square tube by a lifting front side plate and a lifting rear side plate, and the horizontal transmission system consists of a plurality of groups of horizontal transmission rollers, a process tank body, a transmission track and a roller plug-in. The lifting type return groove body of the double-row electroplating horizontal line is adopted to solve the deplating and return problems of the carrier plate type clamp, the collision and damage problems of the carrier plate type clamp in the manual transportation process can be reduced, the production efficiency is improved, automation is conveniently achieved, and the occupied plant space is saved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic production equipment, and in particular to a lifting return tank structure for a double-row electroplating horizontal line. Background Technology

[0002] Electroplating is a crucial step in the manufacturing of photovoltaic cells, involving the deposition of a metal layer onto the cells through electrolysis. Using a carrier plate jig as a transport medium during electroplating improves plating uniformity and efficiency, while reducing cell breakage. Traditionally, after electroplating, the carrier plate jig is manually placed into a stripping tank at the end of the electroplating line for stripping. After stripping, the cells are then loaded back into the electroplating line for further plating. However, manual transport increases the risk of damage to the carrier plate jig and results in low production efficiency.

[0003] Existing horizontal electroplating lines for photovoltaic cells primarily employ cathode brush rollers or cathode brush arrays as the electroplating method for conducting electricity between the cathode and the cell. In this method, the cathode brush rollers or arrays easily come into contact with the electroplating solution, readily resulting in a metal layer being deposited onto them. If this metal layer is not treated over a long period, the metal bristles of the cathode brush rollers or arrays can become coarse and hard, hindering proper conductive contact with the cell's grid lines and leading to poor plating uniformity and efficiency. Furthermore, the metal-plated brushes can easily scratch the cell surface, negatively impacting cell quality. However, since a carrier plate type fixture is used, after the carrier plate type fixture and the battery cell are electroplated together, the battery cell continues to flow into the next process at the end of the electroplating line. The carrier plate type fixture after electroplating needs to undergo metal layer stripping treatment and be transported to the front end of the electroplating line to reload the battery cell to be electroplated.

[0004] Currently, the electroplating process using clamps is mainly employed in VCP electroplating equipment, which uses a vertical clamping method for transporting solar cells. With the continuous expansion and development of the photovoltaic cell industry, existing VCP electroplating equipment, due to its large footprint, high maintenance costs, and inability to meet the demands for high output, low energy consumption, and mass automation, is problematic. While horizontal electroplating lines are more conducive to automated mass production, the traditional vertical electroplating method is technically more mature. Therefore, given the current level of electroplating technology, we have adopted clamps similar to those used in vertical electroplating on horizontal electroplating lines, which significantly improves the uniformity and efficiency of solar cell electroplating. Utility Model Content

[0005] To address the aforementioned problems and solve the issues of plating removal and return in carrier plate fixtures, this utility model provides a lifting return tank structure for double-row electroplating horizontal lines.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a lifting return tank structure for a double-row electroplating horizontal line, including a process tank, a tank base frame, and two sets of deplating return tanks. The process tank is placed above the tank base frame, and the two sets of deplating return tanks are placed inside the tank base frame. A lifting transmission system and a horizontal transmission system are installed inside the deplating return tank. The lifting transmission system consists of a front lifting plate and a rear lifting plate connected by a square tube to form a transmission frame. Multiple sets of lifting transmission rollers are evenly arranged within the transmission frame. The lifting transmission rollers are connected together by a double-row sprocket and chain for transmission. The frontmost set of lifting transmission rollers is connected by a chain... The lifting and transmission motor is connected to the wheel and chain, which drives the lifting and transmission rollers of the entire lifting and transmission system to rotate. The lifting and transmission of the system is driven by a servo motor through four sets of linear bearing mechanisms and one set of ball screw lifting mechanisms. The horizontal transmission system is composed of multiple sets of horizontal transmission rollers, a process tank, a transmission track, and roller inserts. Multiple sets of transmission limit rollers are provided on both sides of the horizontal transmission system. A horizontal transmission main drive shaft is provided on one side of the horizontal transmission system. The horizontal transmission main drive shaft is connected to a horizontal conveying motor, which drives the horizontal transmission rollers to rotate through the horizontal transmission main drive shaft. A water pump extraction port is also provided on one side of the transmission track.

[0007] Furthermore, the process tank is a horizontal electroplating process tank consisting of an electroplating tank and a cleaning tank.

[0008] Furthermore, the deplating return tank is equipped with a tank protective cover and a track-side protective cover.

[0009] Furthermore, a drain pipe is installed at the bottom of the stripping return tank, which is connected to the factory's drain pipe.

[0010] Furthermore, the transmission limiting rollers maintain at least three sets of transmission limiting rollers in contact with the carrier plate fixture in the transmission direction.

[0011] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages:

[0012] 1. This utility model adopts a horizontal electroplating method using a carrier plate type fixture as the carrier for the battery cells. While ensuring the uniformity and efficiency of electroplating, it also reduces the breakage rate of the battery cells. Applying the fixture of the vertical electroplating method to the horizontal electroplating line has a good improvement on the uniformity and efficiency of electroplating of the battery cells.

[0013] 2. The double-row electroplating horizontal line with lifting return tank solves the problem of deplating and return of the carrier plate fixture. It can reduce the problem of bumps and damage during manual transportation of the carrier plate fixture, improve production efficiency, and facilitate automation. The deplating return tank is placed below the process tank, which saves more factory space. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a top view of the internal structure of this utility model;

[0018] Figure 4 This is a front view structural diagram of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Example

[0021] A lifting and return tank structure for a double-row electroplating horizontal line comprises a process tank 1, a tank base frame 2, and two sets of stripping return tanks 3. The two sets of stripping return tanks 3 can operate simultaneously without interference. The process tank 1, which can be a horizontal electroplating process tank such as an electroplating tank or a cleaning tank, is positioned above the tank base frame 2. The two sets of stripping return tanks 3 are housed within the tank base frame 2. The stripping return tanks 3 are equipped with a lifting transmission system and a horizontal transmission system. The lifting transmission system consists of a front lifting plate 13 and a rear lifting plate 14 connected by a square tube to form a transmission frame. Multiple sets of lifting transmission rollers 18 are evenly arranged within the transmission frame, and these rollers are connected to each other via double-row sprockets and chains for transmission. A lifting transmission motor 4 is connected to the frontmost set of lifting transmission rollers 18 via sprockets and chains, driving the rotation of all lifting transmission rollers 18 in the lifting transmission system. The lifting and lowering of the lifting and transmission system is handled by four sets of linear bearing mechanisms 8 and one set of ball screw lifting mechanisms 7. The power of the ball screw lifting mechanism 7 is mainly provided by a servo motor, which provides precise positioning accuracy. Multiple sets of horizontal transmission rollers 17, together with the process tank 1, the transmission track 12, and the roller inserts 10, form the horizontal transmission system. Multiple sets of transmission limit rollers 9 are set on both sides of the horizontal transmission system, and at least three sets of transmission limit rollers 9 are kept in contact with the carrier plate fixture 11 in the transmission direction. A horizontal transmission main drive shaft 16 is set on one side of the horizontal transmission system. It is connected to the horizontal conveyor motor 15 through a sprocket and chain, and transmits power through the horizontal conveyor motor 15, which then drives the horizontal transmission rollers 17 to rotate through a helical gear set. The stripping return tank 3 is equipped with a tank protective cover 6 and a track-side protective cover 5. These can prevent the stripping solution in the stripping return tank 3 from evaporating or splashing out and affecting the factory environment and personnel health. To facilitate the replacement of the chemical solution in the tank, a drain pipe 19 is installed at the bottom of the stripping return tank 3, which is connected to the factory's drainage pipeline. A water pump extraction port 20 is also installed on one side of the drive shaft of the transmission track 12 to prevent the chemical solution in the stripping return tank 3 from leaking through the gap between the roller insert 10 and the transmission track 12, thus preventing a drop in the liquid level in the stripping return tank 3. Therefore, this water pump extraction port 20 is installed to pump the chemical solution back into the stripping return tank 3, ensuring a balanced liquid level within the stripping return tank 3.

[0022] After the carrier plate clamp 11 is raised a certain distance by the lifting and transmission system, it reaches a position horizontal with the carrier plate clamp 11 transmitted from the unloading mechanism. At this point, the highest point of the lifting and transmission roller 18 must have risen a distance higher than that of the carrier plate clamp 11. Figure 4A distance of D1 is required for the carrier plate fixture 11 to be smoothly transferred from the unloading mechanism into the stripping return tank 3. D1 is the distance between the inlet of the stripping return tank 3 and the highest point of the lifting transmission roller 18. The unloading mechanism transfers the carrier plate fixture 11 to the stripping return tank 3 via the lifting transmission roller 18. Then, the lifting transmission system lowers the fixture 11 a certain distance until it is level with the horizontal transmission system, at which point the lifting stops. Simultaneously, the lifting transmission system and the horizontal transmission system transfer the carrier plate fixture 11 horizontally. The stripping solution in the tank must completely submerge the highest point of the carrier plate fixture 11 for immersion stripping. This ensures the carrier plate fixture 11 is fully stripped. However, the solution level must not exceed the lowest point of the inlet of the stripping return tank 3. A distance D2 is set at the outlet of the stripping return tank 3, which is the distance between the outlet of the stripping return tank 3 and the highest point of the horizontal conveyor roller 17. Here, the solution level must also not exceed the lowest point of the outlet of the stripping return tank 3 to prevent overflow and environmental damage. After the carrier plate fixture 11 completes stripping in the stripping return tank 3, it will be lifted a certain height via a lifting conveyor system at the outlet and then exited the stripping return tank 3 for the next process. This structure can also be modified by replacing the stripping solution in the stripping return tank 3 with an electroplating solution and adjusting the internal mechanism for electroplating.

[0023] This invention employs a horizontal electroplating method using a carrier plate fixture as the carrier for the solar cells. This method ensures both electroplating uniformity and efficiency while reducing the breakage rate of the solar cells. Applying a vertical electroplating fixture to a horizontal electroplating line significantly improves both the electroplating uniformity and efficiency. The double-row, lifting return tank of the horizontal electroplating line solves the problem of stripping and return of the carrier plate fixture, reducing the risk of damage during manual transport, improving production efficiency, and facilitating automation. The stripping return tank is located below the process tank, further saving factory space.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Images