A flux applicator

Abstract

The utility model relates to a kind of fluxing agent smearing devices, it is used to smearing fluxing agent on welding strip, including tank;Strip pressing roller is rotationally connected in the tank;Multiple guide rollers are rotationally connected in the tank, the multiple guide rollers are set in the both sides of the strip pressing roller, the multiple guide rollers are higher than the strip pressing roller setting;Heating element is set on the tank, and the heating element is used to heat the fluxing agent of the tank. The utility model can flexibly heat the fluxing agent in tank to different temperature, so that different concentration of fluxing agent is obtained, the smearing of different welding strip is realized, and work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of battery cell welding equipment, and in particular to a flux application device. Background Technology

[0002] In the welding process of solar cells (especially photovoltaic cells) and solder ribbons, flux plays an important role. The main grid of the solar cell and the surface of the solder ribbon usually have a very thin oxide layer. The presence of this oxide layer will seriously hinder the contact between the molten solder (tin alloy) and the solder ribbon, resulting in the solar cell and the solder ribbon failing to form a good bond, causing poor soldering and desoldering. When the flux is activated at the welding temperature, it reacts chemically with the oxide on the surface of the solder ribbon, dissolving, reducing or decomposing it, so that the solder ribbon exposes a clean metal surface, creating favorable conditions for welding. Existing flux application equipment has relatively simple functions and cannot flexibly adjust the flux temperature, resulting in low application efficiency. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the existing flux coating equipment has a relatively simple function and cannot flexibly adjust the temperature of the flux, resulting in the equipment being incompatible with multiple fluxes and having low coating efficiency. In this way, a flux coating device is provided that can flexibly heat the flux in the tank to different temperatures, thereby obtaining flux of different concentrations, realizing the coating of different solder strips, and improving work efficiency.

[0004] To solve the above-mentioned technical problems, this utility model provides a flux application device for applying flux to solder strips, comprising: Tank body; A pressure roller, which is rotatably connected to the groove body; Multiple guide rollers are rotatably connected to the groove body, and the multiple guide rollers are disposed on both sides of the pressure roller, and the multiple guide rollers are disposed above the pressure roller; A heating element is disposed on the tank body, and the heating element is used to heat the flux in the tank body.

[0005] In one embodiment of the present invention, the heating element is disposed inside the tank or directly below the tank.

[0006] In one embodiment of this utility model, the tank is further provided with a water outlet weir.

[0007] In one embodiment of this utility model, an automatic liquid adding unit is also included. The automatic liquid adding unit includes a controller, a valve electrically connected to the controller, and a pipe fitting. One end of the pipe fitting is connected to the valve, and the other end is connected to the tank.

[0008] In one embodiment of this utility model, the tank is equipped with a liquid level sensor, which is electrically connected to the controller.

[0009] In one embodiment of this utility model, the pressure roller is made of ceramic material.

[0010] In one embodiment of this utility model, the two ends of the pressing roller are provided with end caps, and the two ends of the pressing roller are rotatably connected to the groove body through corrosion-resistant bearings.

[0011] In one embodiment of this utility model, the groove opening of the groove body is provided with a sealing cover, and the sealing cover is provided with a transparent viewing window.

[0012] In one embodiment of this utility model, the sealing cover is provided with an electrostatic handle.

[0013] In one embodiment of the present invention, a waste liquid tank is provided on the outer side of the tank body, and the waste liquid tank is located on one side of the tank body along the conveying direction of the welding strip.

[0014] In one embodiment of this utility model, the pressure roller is disposed at the bottom of the groove.

[0015] In one embodiment of this utility model, the axis of the pressure roller and the axes of the plurality of guide rollers are arranged in parallel.

[0016] In one embodiment of this utility model, the plurality of guide rollers includes a first guide roller and a second guide roller.

[0017] In one embodiment of this utility model, the two ends of the guide roller are rotatably connected to the groove body through anti-corrosion bearings.

[0018] In one embodiment of the present invention, a bracket is also included, and the groove is disposed on the bracket.

[0019] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects: The flux application device of this invention uses a pressure roller to press the solder strip to be coated into the tank, and a guide roller to guide the solder strip so that it can pass through the flux in the tank and be evenly and quickly coated with flux, thus improving coating efficiency. By setting a heating element on the tank, the temperature of the flux in the tank can be flexibly adjusted to the concentration required for production, thereby improving welding efficiency. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. Figure 1 This is a schematic diagram of the flux application device in a preferred embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional view of the flux application device shown.

[0021] Explanation of reference numerals in the accompanying drawings: 1. Tank body; 2. Pressure roller; 3a. First guide roller; 3b. Second guide roller; 4. Heating element; 5. Liquid level sensor; 6. Sealing cover; 61. Transparent window; 62. Vent; 63. Electrostatic handle; 7. Waste liquid tank; 8. Automatic liquid filling unit; 9. Pipe fitting; 10. Support; 11. Inlet; 12. Outlet; 13. Outlet weir; 14. Boss; 15. Drainage port; 16. Guide plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0023] For reference Figure 1 and Figure 2 As shown, in one embodiment of this utility model, a flux application device is disclosed, which is used to apply flux to solder ribbon, including, Tank 1; The pressure roller 2 is rotatably connected inside the trough 1; Multiple guide rollers are rotatably connected inside the groove 1. The multiple guide rollers are arranged on both sides of the pressure roller 2 and are positioned higher than the pressure roller 2. A heating element 4 is disposed on the tank 1, and the heating element 4 is used to heat the flux in the tank 1.

[0024] The flux application device described in this embodiment uses a pressure roller 2 to press the solder strip to be coated into the tank 1, and a guide roller to guide the solder strip so that it can pass through the flux in the tank 1 and be evenly and quickly coated by the flux in the tank 1, thus improving the coating efficiency. By setting a heating element 4 on the tank 1, the temperature of the flux in the tank 1 can be flexibly adjusted to the concentration required for production, thereby improving the welding efficiency.

[0025] For reference Figure 2As shown, in one embodiment of the present invention, flux is injected into the tank 1, and the pressure roller 2 is used to press the welding strip to the bottom of the tank 1 so that the welding strip is immersed in the flux.

[0026] Furthermore, multiple guide rollers are used to support the welding strip, which smoothly enters the tank 1 and exits from the tank 1.

[0027] For reference Figure 1 As shown, in one embodiment of this utility model, the heating element 4 is disposed directly below the tank 1. The heating element 4 is disposed separately from the flux. The heat generated by the heating element 4 is transferred to the tank 1, causing the temperature of the flux to rise. In another embodiment, the heating element 4 can be disposed inside the tank 1. The heat generated by the heating element 4 is directly transferred to the flux, reducing the distance between the heat source and the flux and accelerating the heating of the flux.

[0028] For reference Figure 2 As shown, in one embodiment of the present invention, the tank 1 is further provided with a water outlet weir 13. The water outlet weir 13 is used to control the liquid level of flux in the tank 1. Excess flux will overflow into the water outlet weir 13 and be discharged out of the tank 1 by the drain port 15 at the bottom of the water outlet weir 13. Furthermore, a raised boss 14 is provided at the bottom of the tank 1 to form the water outlet weir 13.

[0029] For reference Figure 1 As shown, in one embodiment of this utility model, an automatic fluxing unit 8 is also included. The automatic fluxing unit 8 includes a controller, a valve electrically connected to the controller, and a pipe fitting 9. One end of the pipe fitting 9 is connected to the valve, and the other end is connected to the bottom of the tank 1. The valve is used to control the opening and closing of the pipe fitting 9, and the controller is used to control the opening degree of the valve. By using the controller to control the opening and closing of the pipe fitting 9, the flux in the tank 1 is automatically added, reducing human intervention.

[0030] For reference Figure 2 As shown, in one embodiment of this utility model, the tank 1 is provided with a level sensor 5 for detecting the flux level in the tank 1. The level sensor 5 is electrically connected to the controller. When the flux level in the tank 1 is insufficient, the level sensor 5 sends a signal to the controller. After receiving the signal, the controller controls the valve to open, and the valve opens the pipe 9, so that external flux can be injected into the tank 1 through the pipe 9.

[0031] In one embodiment of this utility model, the pressure roller 2 is made of ceramic material, which has the characteristics of being smooth, wear-resistant, and corrosion-resistant, and can improve the service life of the pressure roller 2.

[0032] In one embodiment of this utility model, the two ends of the pressure roller 2 are provided with end caps. The end caps are made of aluminum, which has the characteristics of corrosion resistance and can prevent flux from entering the inside of the pressure roller 2, thereby reducing the risk of corrosion.

[0033] For reference Figure 1 As shown, in one embodiment of the present invention, a sealing cover 6 is provided at the opening of the tank 1. The sealing cover 6 is used to reduce the evaporation and leakage of flux. The sealing cover 6 is provided with a transparent window 61 to facilitate observation of the solder ribbon coating inside the tank 1.

[0034] For reference Figure 1 As shown, in one embodiment of this utility model, the sealing cover 6 is provided with an electrostatic handle 63, which can reduce the phenomenon of static electricity generated when opening the sealing cover 6.

[0035] In one embodiment of this utility model, the two ends of the pressure roller 2 are rotatably connected to the groove body 1 through corrosion-resistant bearings.

[0036] For reference Figure 1 As shown, in one embodiment of the present invention, a waste liquid tank 7 is provided on the outer side of the tank body 1. The waste liquid tank 7 is located on one side of the tank body 1 along the conveying direction of the welding strip. After the welding strip is drawn out from the tank body 1, it passes above the waste liquid tank 7. Excess flux on the welding strip will drip into the waste liquid tank 7, thereby realizing the centralized recycling of waste liquid.

[0037] For reference Figure 2 As shown, in one embodiment of the present invention, the pressure roller 2 is disposed at the bottom of the groove 1 so as to completely press the welding strip into the flux.

[0038] For reference Figure 2 As shown, in one embodiment of this utility model, the axis of the pressure roller 2 and the axes of the multiple guide rollers are arranged in parallel for smooth conveying of the welding strip.

[0039] For reference Figure 2 As shown, in one embodiment of the present invention, the plurality of guide rollers include a first guide roller 3a and a second guide roller 3b. The first guide roller 3a and the second guide roller 3b are respectively used to support the welding strips on both sides of the pressure roller 2 to ensure that the welding strips are smoothly conveyed in the trough 1.

[0040] In one embodiment of this utility model, the two ends of the guide roller are rotatably connected to the groove 1 through anti-corrosion bearings to ensure that the guide roller can rotate smoothly for a long time.

[0041] For reference Figure 1 As shown, in one embodiment of the present invention, a bracket 10 for supporting the groove 1 is also included to facilitate moving the groove 1.

[0042] For reference Figure 1 As shown, in one embodiment of the present invention, the sealing cover 6 is provided with an exhaust port 62 that connects the inside and outside. The exhaust port 62 is connected to an external waste gas collection device for the purpose of recovering volatile flux.

[0043] For reference Figure 2 As shown, in one embodiment of the present invention, an inlet 11 and an outlet 12 are respectively provided on the two sides facing each other in the tank 1. One end of the welding strip enters the tank from the inlet 11 and leaves the tank from the outlet 12.

[0044] For reference Figure 2 As shown, in one embodiment of the present invention, the outlet 12 is provided with a guide plate 16 for guiding the coated solder strip.

[0045] The working principle of the flux application device described in this utility model is as follows: First, one end of the solder strip to be coated is passed over the top of the first guide roller 3a and inserted downwards into the tank 1, then passed under the pressure roller 2, and finally passed over the top of the second guide roller 3b and exited the tank 1. Then, the tank 1 is covered by the sealing cover 6, and the automatic liquid adding unit 8 is used to add flux to the tank 1 so that it at least overflows the pressure roller 2. The heating element 4 starts heating. When the flux temperature in the tank 1 rises to a specific temperature, one end of the solder strip is pulled, so that the solder strip continuously enters and leaves the tank 1. During the movement of the solder strip, flux is continuously applied to the solder strip, thus achieving flux coating. When there is too much flux in the tank 1, the flux overflows from the water outlet weir 13 and flows to a specific recovery device through the drain port 15. When the liquid level sensor 5 detects that there is not enough flux in the tank 1, the automatic liquid adding unit 8 automatically injects flux into the tank 1.

[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A flux application device for applying flux to solder strips, characterized in that, include, Tank body; A pressure roller, which is rotatably connected to the groove body; Multiple guide rollers are rotatably connected to the groove body, and the multiple guide rollers are disposed on both sides of the pressure roller, and the multiple guide rollers are disposed above the pressure roller; A heating element is disposed on the tank body, and the heating element is used to heat the flux in the tank body.

2. The flux application device according to claim 1, characterized in that, The heating element is located inside the tank or directly below the tank.

3. The flux application device according to claim 1, characterized in that, The trough is also equipped with a water outlet weir.

4. The flux application device according to claim 1, characterized in that, It also includes an automatic liquid filling unit, which includes a controller, a valve electrically connected to the controller, and a pipe fitting. One end of the pipe fitting is connected to the valve, and the other end is connected to the tank.

5. The flux application device according to claim 4, characterized in that, The tank is equipped with a liquid level sensor, which is electrically connected to the controller.

6. The flux application device according to claim 1, characterized in that, The pressure roller is made of ceramic material.

7. A flux application device according to claim 1 or 6, characterized in that, The pressing roller has end caps at both ends, and the two ends of the pressing roller are rotatably connected to the groove body through corrosion-resistant bearings.

8. The flux application device according to claim 1, characterized in that, The groove opening of the tank is provided with a sealing cover, and the sealing cover is provided with a transparent viewing window.

9. A flux application device according to claim 8, characterized in that, The sealing cover is equipped with an electrostatic handle.

10. A flux application device according to claim 1, characterized in that, A waste liquid tank is provided on the outside of the tank body, and the waste liquid tank is located on one side of the tank body along the conveying direction of the welding strip.

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