Soldering flux coating mechanism and bus bar feeding device

Abstract

The utility model discloses a soldering flux coating mechanism and a bus bar feeding device, and belongs to the technical field of photovoltaic cell assembly production. The rotatable smearing wheel is installed on the scaling powder box, the lower end of the smearing wheel extends into the liquid groove and makes contact with the scaling powder, the upper end of the smearing wheel is located above the liquid level of the scaling powder, the surface of the bus bar is attached to the circumferential side face of the smearing wheel, when the bus bar is dragged to move, the bus bar can drive the smearing wheel to rotate, and therefore the smearing wheel can be driven to rotate; the smearing wheel carries the scaling powder on the lower portion and smears the scaling powder on the surface, making contact with the smearing wheel, of the bus bar, and scaling powder smearing on the bus bar is achieved; due to the fact that the circumferential side face of the smearing wheel can be evenly stained with the scaling powder in the rotating process, and the rotating speed of the smearing wheel is determined by the traction speed of the bus bar, the smearing wheel can evenly smear the scaling powder on the surface of the bus bar, in addition, no scaling powder splashes in the whole smearing process, and the smearing effect is good. And machine pollution and soldering flux waste cannot be caused.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic cell assembly production, and specifically to a flux coating mechanism and a busbar feeding device. Background Art

[0002] Soldering the busbars to the end strips of the arranged battery string is an important process in the production of photovoltaic modules. In order to improve the welding quality between the busbars and the strips, it is necessary to apply flux to the side of the busbar to be welded to the strips before welding.

[0003] There are two main conventional methods for applying flux to the busbar surface. One is to spray the flux onto the busbar surface. This method has the following disadvantages: (1) The change in the busbar pulling speed will cause different amounts of flux sprayed on the busbar surface, resulting in uneven spraying; (2) The flux is likely to contaminate the machine during the spraying process; (3) It is easy to cause flux waste. The other is to use a sponge for coating. By placing an absorbent sponge in a tank filled with flux, the busbar is pressed against the sponge so that the flux on the sponge is rubbed onto the busbar. This method has the following disadvantages: (1) Since the flux on the sponge will gradually decrease as the length of the busbar increases, the flux applied to the busbar will be uneven; (2) It is difficult to detect the amount of flux adsorbed on the sponge, resulting in not knowing when to refill the flux tank. Utility Model Content

[0004] In view of at least one of the problems existing in applying flux to the busbar, the present application provides a flux coating mechanism, and the specific solution is as follows:

[0005] The flux coating mechanism includes a flux box and a coating wheel, wherein:

[0006] A liquid tank for holding soldering flux is provided in the soldering flux box;

[0007] The coating wheel is vertically arranged and rotatably mounted on the flux box, the lower end of the coating wheel extends below the flux liquid level in the liquid tank, the upper end of the coating wheel is located above the flux liquid level, the circumferential side surface of the coating wheel located above the liquid level is in contact with the surface of the pulled bus bar, the pulled bus bar moves to drive the coating wheel to rotate, and the flux is coated on the surface of the bus bar in contact with the coating wheel.

[0008] The flux coating mechanism of the present application is achieved by installing a rotatable coating wheel on the flux box, and extending the lower end of the coating wheel into the liquid tank and contacting the flux, the upper end of the coating wheel is located above the flux liquid level, and the surface of the bus bar is fit with the circumferential side of the coating wheel. When the bus bar is pulled to move, the bus bar can drive the coating wheel to rotate, so that the coating wheel brings up the flux below and coats it on the surface of the bus bar in contact with the coating wheel, thereby achieving flux coating on the bus bar; because the circumferential side of the coating wheel can be evenly stained with flux during rotation, and the rotation speed of the coating wheel is determined by the pulling speed of the bus bar, the coating wheel can evenly coat the flux on the surface of the bus bar. In addition, there is no flux splashing during the entire coating process, and no machine pollution and flux waste will be caused.

[0009] In some embodiments, the flux box includes a box body and a mounting seat arranged on the box body; the smear wheel is sleeved on the rotating shaft, and both ends of the rotating shaft are rotatably connected to the mounting seat through bearings.

[0010] A specific smear wheel rotation installation method is provided to ensure that the smear wheel can rotate, so that the soldering flux under the smear wheel is brought up by the rotation of the smear wheel and smeared on the surface of the bus bar that contacts the smear wheel.

[0011] In some embodiments, the bearing is located above the flux level.

[0012] By placing the bearing above the flux liquid level, the bearing is prevented from directly contacting the flux, thereby reducing the probability of the bearing getting stuck due to flux contamination.

[0013] In some embodiments, the flux box further includes a cover body, which is located below the bearing. The cover body is provided with a slot hole adapted to the smear wheel, and the lower end of the smear wheel extends through the slot hole to below the flux liquid surface.

[0014] By providing a slot hole matched with the coating wheel on the cover body, the coating wheel can be prevented from bringing up more soldering flux when rotating, thereby reducing the probability of soldering flux contaminating the bearing.

[0015] In some embodiments, guide grooves are provided on both sides of the slot hole on the cover body, and the guide grooves are connected to the slot hole.

[0016] The guide groove arranged on the cover body can guide the flux coming up from the coating wheel to prevent the flux from flowing to the bearing. At the same time, the guide groove is connected with the slot hole, so that the flux collected in the guide groove can be finally returned to the liquid tank through the slot hole, thereby reducing the waste of flux.

[0017] In some embodiments, at least one annular groove is formed on the rotating shafts on both sides of the smear wheel along the length direction.

[0018] By means of the annular groove provided on the rotating shaft, the soldering flux flowing onto the rotating shaft can be guided to prevent the soldering flux from entering into the bearing.

[0019] In some embodiments, two mounting grooves are provided on the mounting seat, and two bearings are respectively mounted in the two mounting grooves; the flux coating mechanism also includes a blowing assembly for blowing air toward the bearings in the mounting grooves to blow away the flux that enters between the inner and outer rings of the bearings.

[0020] The bearing is arranged in a mounting groove in a mounting seat, and air is blown toward the bearing in the mounting groove through an air blowing assembly, so that soldering flux is prevented from entering the bearing and the bearing is prevented from getting stuck.

[0021] In some embodiments, two groups of blowing assemblies are provided and correspond one to one with the bearings. The blowing assemblies include an air block and a blowing connector. The blowing connector is installed on the air block and is connected to an external air source. A gas channel is provided in the air block, one end of the gas channel is connected to the blowing connector, and the other end is connected to the corresponding mounting groove.

[0022] A structure of a blowing component is provided. Through an external gas source, gas enters a mounting groove through a gas channel in a gas block, so as to blow air to a bearing in the mounting groove, prevent soldering flux from entering the bearing, and thus avoid bearing jamming.

[0023] In some embodiments, the bearing is a bearing without a sealing ring, and the bearing is a ceramic bearing or a metal bearing.

[0024] By selecting a bearing without a seal, ensure that the air blowing assembly can blow air to the inner and outer rings of the bearing to prevent flux from entering the interior of the bearing.

[0025] In some embodiments, the flux coating mechanism further includes a pressure wheel and a floating mechanism, wherein the pressure wheel is mounted on a mounting seat via the floating mechanism and is used to elastically press the bus bar onto the coating wheel.

[0026] By arranging a pressing wheel and a floating mechanism above the coating wheel, the bus bar is elastically pressed against the coating wheel, so that the soldering flux is evenly coated on the contact surface between the bus bar and the coating wheel when the coating wheel rotates.

[0027] In some embodiments, the floating mechanism includes a pressure wheel shaft, two guide rods and two springs, wherein: two oppositely arranged vertical waist holes are opened on the mounting seat, and the two ends of the pressure wheel shaft can be slid up and down and inserted into the two vertical waist holes respectively; the pressure wheel is sleeved on the pressure wheel shaft, and a gap is formed between the pressure wheel and the coating wheel for the bus bar to pass through; the guide rod is vertically arranged, the lower end is fixedly connected to one end of the pressure wheel shaft, and the upper end is slidably connected to the mounting seat; the spring is sleeved on the guide rod, the upper end of the spring abuts against the mounting seat, and the lower end of the spring abuts against the pressure wheel shaft.

[0028] A mounting structure of a floating mechanism is provided, wherein a pressure wheel is sleeved on a pressure wheel shaft, the pressure wheel shaft is slidably inserted into a vertical waist hole, a spring is sleeved on a vertically arranged guide rod, and the upper end abuts against a mounting seat, and the lower end abuts against the pressure wheel shaft, so that the spring always applies a downward pressure to the pressure wheel shaft, so that the pressure wheel shaft elastically presses the bus bar onto the coating wheel.

[0029] In some embodiments, baffles are respectively provided on both sides of the pressing wheel, and the baffles are sleeved on the pressing wheel shaft.

[0030] The baffles arranged on both sides of the pressing wheel can prevent the busbar from deviating from the coating wheel during the moving process.

[0031] In some embodiments, the flux coating mechanism also includes a first guide wheel and a second guide wheel, wherein: the first guide wheel and the second guide wheel are respectively arranged in the front and rear tracks of the coating wheel, and the bus bar is sequentially attached to the upper surface of the first guide wheel, the upper surface of the coating wheel and the lower surface of the second guide wheel, and the highest point of the bus bar is on the coating wheel.

[0032] By respectively arranging the first guide wheel and the second guide wheel in front and rear of the coating wheel, the bus bar passes through the upper surface of the first guide wheel, the upper surface of the coating wheel and the lower surface of the second guide wheel in sequence, and the highest point of the bus bar is on the coating wheel, which can ensure that the bus bar has a certain tension during the movement and is tightly attached to the coating wheel.

[0033] In some embodiments, the flux coating mechanism also includes a liquid level sensor and a liquid adding device. The liquid level sensor is arranged in the liquid tank to detect the height of the flux liquid level; the liquid outlet of the liquid adding device is connected to the liquid tank, and the liquid level sensor is electrically connected to the liquid adding device. The liquid adding device is used to automatically replenish the flux to the liquid tank according to the detection result of the liquid level sensor.

[0034] The liquid level sensor set in the liquid tank can detect the height of the flux liquid level, and the liquid adding device electrically connected to the liquid level sensor receives the detection result from the liquid level sensor. When the liquid level sensor detects that the flux in the liquid tank needs to be added, the flux enters the liquid tank through the liquid outlet end of the liquid adding device, and the flux is automatically replenished in the liquid tank.

[0035] In some embodiments, a partition is installed in the flux box, dividing the liquid tank into a liquid adding tank and a loading tank, and at least one slow flow tank is opened on at least one of the upper end and the lower end of the partition; the liquid level sensor is located in the liquid adding tank, and the coating wheel is located in the loading tank.

[0036] The liquid tank is divided into a liquid adding tank and a material loading tank by a partition, and a slow flow tank is opened on the partition. When the liquid level sensor in the liquid adding tank detects that flux needs to be added, flux is added to the liquid adding tank so that the flux flows into the material loading tank through the slow flow tank. This can reduce the fluctuation of the flux liquid level in the material loading tank, thereby ensuring the coating effect of the wheel pair busbar.

[0037] The present application also provides a busbar feeding device, comprising the flux coating mechanism shown above.

[0038] By installing the above-mentioned flux coating mechanism in the busbar feeding device, the flux can be evenly coated on the working surface of the busbar, and the coating process will not cause pollution to the machine and waste of flux.

[0039] In some embodiments, the busbar loading device also includes a reeling mechanism and a pressing mechanism, a cutting mechanism and a traction mechanism which are arranged in sequence, wherein: the reeling mechanism is used to release the busbar from the roll; the busbar released by the reeling mechanism passes through the flux coating mechanism, the pressing mechanism and the cutting mechanism in sequence and is clamped and pulled by the traction mechanism; the flux coating mechanism is used to apply flux to the working surface of the busbar; the pressing mechanism is used to press the busbar; and the cutting mechanism is used to cut the busbar.

[0040] By cooperating with the unwinding mechanism, the flux coating mechanism, the pressing mechanism, the cutting mechanism and the pulling mechanism which are arranged in sequence, a busbar of a predetermined length coated with flux can be prepared in the production process of a photovoltaic cell assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of the busbar feeding device in this application;

[0042] Figure 2 It is a schematic diagram of the overall structure of the flux coating mechanism in this application;

[0043] Figure 3 It is a schematic diagram of the overall structure of the flux coating mechanism in this application from another perspective;

[0044] Figure 4 For along Figure 3 Sectional view along line AA;

[0045] Figure 5 This is a schematic diagram of the structure of the cover plate in this application;

[0046] Figure 6 This is a structural schematic diagram of the cover plate in this application from another perspective;

[0047] Figure 7 This is a schematic diagram of the installation structure of the coating wheel and the rotating shaft in this application;

[0048] Figure 8 It is a schematic diagram of the structure of the box body in this application.

[0049] Reference numerals: 1. busbar; 2. unwinding mechanism; 3. flux coating mechanism; 4. pressing mechanism; 5. cutting mechanism; 6. pulling mechanism;

[0050] 31, box body; 311, liquid tank; 3111, liquid adding tank; 3112, material loading tank; 312, partition; 3121, slow flow tank;

[0051] 32. cover body; 321. slot hole; 322. guide groove;

[0052] 33. coating wheel; 331. rotating shaft; 3311. annular groove; 332. bearing;

[0053] 34. Pressing wheel; 341. Baffle;

[0054] 35. floating mechanism; 351. pressure wheel shaft; 352. guide rod; 353. spring;

[0055] 36. Blowing assembly; 361. Gas block; 362. Blowing joint; 363. Gas channel;

[0056] 37. Mounting seat; 371. Vertical waist hole;

[0057] 38. first guide wheel; 39. second guide wheel;

[0058] 310. Float switch. DETAILED DESCRIPTION

[0059] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] like Figures 2 to 4 As shown, the present application provides a flux coating mechanism 3, including a flux box and a coating wheel 33, wherein: a liquid tank 311 for containing flux is provided in the flux box; the coating wheel 33 is vertically arranged and rotatably mounted on the flux box, the lower end of the coating wheel 33 extends below the flux liquid level in the liquid tank 311, the upper end of the coating wheel 33 is located above the flux liquid level, the circumferential side surface of the coating wheel 33 located above the liquid level is in contact with the surface of the pulled bus bar 1, the pulled bus bar 1 moves to drive the coating wheel 33 to rotate, and the flux is coated on the surface of the bus bar 1 in contact with the coating wheel 33.

[0061] The flux coating mechanism 3 of the present application is achieved by installing a rotatable coating wheel 33 on the flux box, and extending the lower end of the coating wheel 33 into the liquid tank 311 and contacting the flux, and the upper end of the coating wheel 33 is located above the flux liquid level, and by making the surface of the busbar 1 fit with the circumferential side of the coating wheel 33, when the busbar 1 is pulled to move, the busbar 1 can drive the coating wheel 33 to rotate, so that the coating wheel 33 brings up the flux below and coats it on the surface of the busbar 1 in contact with the coating wheel 33, thereby coating the busbar 1 with flux; because the circumferential side of the coating wheel 33 can be evenly stained with flux during the rotation process, and the rotation speed of the coating wheel 33 is determined by the pulling speed of the busbar 1, the coating wheel 33 can evenly coat the flux on the surface of the busbar 1. In addition, there is no flux splashing during the entire coating process, and no machine pollution and flux waste will be caused.

[0062] refer to Figure 4 Optionally, the flux box includes a box body 31 and a mounting base 37 arranged on the box body 31; the mounting base 37 is provided with two mounting grooves, and bearings 332 are installed in the mounting grooves. The smear wheel 33 is sleeved on the rotating shaft 331, and the two ends of the rotating shaft 331 are rotatably connected to the mounting base 37 through bearings 332 respectively.

[0063] The rotatable installation method of the coating wheel 33 provided above ensures that the coating wheel 33 can rotate, so that the soldering flux under the coating wheel 33 is brought up by the rotation of the coating wheel 33 and coated on the surface of the bus bar 1 that contacts the coating wheel 33 .

[0064] Continue to refer Figure 4 The flux box also includes a cover 32, which is located below the bearing 332, and the bearing 332 is located above the flux liquid level to prevent the bearing 332 from directly contacting the flux and reduce the probability of the bearing 332 being stuck due to flux contamination; Figure 5 and Figure 6 As shown, a slot 321 adapted to the smear wheel 33 is provided on the cover body 32, and the lower end of the smear wheel 33 extends through the slot 321 below the flux liquid surface, which can prevent the smear wheel 33 from bringing up more flux when rotating, thereby reducing the probability of the flux contaminating the bearing 332.

[0065] Continue to refer Figure 5 The cover body 32 is provided with guide grooves 322 on both sides of the slot hole 321, which can guide the flux brought up by the coating wheel 33 to prevent the flux from flowing to the bearing 332; the guide groove 322 is connected with the slot hole 321, and the flux collected in the guide groove 322 can be finally returned to the liquid tank 311 through the slot hole 321, thereby reducing the waste of flux.

[0066] like Figure 7As shown, at least one annular groove 3311 is provided along the length direction on the rotating shaft 331 located on both sides of the smear wheel 33 , which can guide the flux flowing onto the rotating shaft 331 to prevent the flux from entering the bearing 332 .

[0067] Optionally, a plurality of annular grooves 3311 are provided on the rotating shaft 331 on both sides of the smear wheel 33 at intervals along the length direction, so as to better prevent the soldering flux from entering the bearing 332 .

[0068] like Figures 2 to 4 As shown, the flux coating mechanism 3 also includes a blowing assembly 36, which is provided with two groups and corresponds to the bearings 332 one by one. The blowing assembly 36 blows air toward the bearings 332 in the mounting groove to blow away the flux that enters between the inner ring and the outer ring of the bearing 332.

[0069] refer to Figure 4 The blowing assembly 36 includes a gas block 361 and a blowing connector 362. The blowing connector 362 is installed on the gas block 361 and is connected to an external gas source. A gas channel 363 is provided in the gas block 361. One end of the gas channel 363 is connected to the blowing connector 362, and the other end is connected to the corresponding mounting groove.

[0070] Through the blowing assembly 36 provided above, the gas in the external gas source enters the installation groove through the gas channel 363 in the gas block 361, so as to blow the bearing 332 in the installation groove, thereby preventing the flux from entering the bearing 332 and causing the bearing 332 to get stuck, thereby ensuring that the coating wheel 33 has good follow-up performance.

[0071] Preferably, the bearing 332 is a bearing 332 without a sealing ring, and the bearing 332 is a ceramic bearing 332 or a metal bearing 332 to ensure that the blowing assembly 36 can blow air toward the inner and outer rings of the bearing 332 to prevent the flux from entering the interior of the bearing 332 .

[0072] Continue to refer Figure 4 The flux coating mechanism 3 also includes a pressure wheel 34 and a floating mechanism 35. The floating mechanism 35 includes a pressure wheel shaft 351, two guide rods 352 and two springs 353. The mounting seat 37 is provided with two oppositely arranged vertical waist holes 371, and the two ends of the pressure wheel shaft 351 can be slidably inserted into the two vertical waist holes 371 respectively; the pressure wheel 34 is sleeved on the pressure wheel shaft 351, and a gap is formed between the pressure wheel 34 and the coating wheel 33 for the bus bar 1 to pass through; the guide rod 352 is vertically arranged, the lower end is fixedly connected to one end of the pressure wheel shaft 351, and the upper end is slidably connected to the mounting seat 37; the spring 353 is sleeved on the guide rod 352, the upper end of the spring 353 abuts against the mounting seat 37, and the lower end of the spring 353 abuts against the pressure wheel shaft 351.

[0073] It can be seen that a pressing wheel 34 and a floating mechanism 35 are arranged above the coating wheel 33 to elastically press the busbar 1 onto the coating wheel 33, so that the flux can be evenly coated on the contact surface of the busbar 1 and the coating wheel 33 when the coating wheel 33 rotates.

[0074] The process of the pressure wheel 34 being elastically pressed on the coating wheel 33 is as follows:

[0075] The pressure wheel 34 is sleeved on the pressure wheel shaft 351, and the pressure wheel shaft 351 is slidably inserted into the vertical waist hole 371. The spring 353 is sleeved on the vertically arranged guide rod 352, and the upper end abuts against the mounting seat 37, and the lower end abuts against the pressure wheel shaft 351. The spring 353 always applies a downward pressure to the pressure wheel shaft 351, so that the pressure wheel shaft 351 elastically presses the bus bar 1 onto the coating wheel 33.

[0076] Following the reference Figure 3 and Figure 4 Baffles 341 are respectively provided on both sides of the pressure wheel 34, and the baffles 341 are sleeved on the pressure wheel shaft 351 to prevent the bus bar 1 from deviating from the coating wheel 33 during the moving process.

[0077] like Figure 2 and Figure 3 As shown, the flux coating mechanism 3 also includes a first guide wheel 38 and a second guide wheel. The first guide wheel 38 and the second guide wheel 39 are respectively arranged in front and rear of the coating wheel 33. The bus bar 1 is sequentially fitted with the upper surface of the first guide wheel 38, the upper surface of the coating wheel 33 and the lower surface of the second guide wheel 39, and the highest point of the bus bar 1 is on the coating wheel 33, ensuring that the bus bar 1 has a certain tension during the movement and is tightly attached to the coating wheel 33.

[0078] like Figure 8 As shown, a partition 312 is installed in the flux box, dividing the liquid tank 311 into a liquid adding tank 3111 and a loading tank 3112, and the coating wheel 33 is located in the loading tank 3112. At least one of the upper end and the lower end of the partition 312 is provided with at least one slow flow tank 3121. By adding flux into the liquid adding tank 3111, the flux flows into the loading tank 3112 through the slow flow tank 3121, which can reduce the fluctuation of the flux liquid level in the loading tank 3112, thereby ensuring the coating effect of the coating wheel 33 on the bus bar.

[0079] Continue to refer Figure 8A liquid level sensor is installed in the liquid adding tank 3111 for detecting the height of the flux liquid level; the liquid outlet end of the liquid adding device is connected to the liquid adding tank 3111, and the liquid level sensor is electrically connected to the liquid adding device. The liquid adding device is used to automatically replenish the flux for the liquid tank 3111 according to the detection result of the liquid level sensor. By arranging the liquid level sensor in the liquid adding tank 3111, the height of the flux liquid level is detected, and the liquid adding device electrically connected to the liquid level sensor is used. When the liquid adding device receives the detection result from the liquid level sensor and detects that flux needs to be added to the liquid adding tank 3111, the flux enters the liquid adding tank 3111 through the liquid outlet end of the liquid adding device, and the liquid adding tank 3111 is automatically replenished with flux.

[0080] Optionally, the liquid level sensor is a floating switch 310, and the liquid adding device includes a flux barrel, a liquid pump, a solenoid valve, and a liquid adding pipe. The liquid pump is installed on the flux barrel, one end of the liquid adding pipe is connected to the liquid adding tank 3111, and the other end is installed on the liquid pump. The solenoid valve is installed on the liquid adding pipe. When the solenoid valve receives the liquid adding signal from the floating switch 310, the solenoid valve opens, and the liquid adding pipe adds the flux in the flux barrel to the liquid adding tank 3111 through the liquid pump.

[0081] like Figure 1 As shown, the present application also provides a busbar feeding device, comprising an unwinding mechanism 2, the flux coating mechanism 3 shown above, a pressing mechanism 4, a cutting mechanism 5 and a traction mechanism 6 which are arranged in sequence, wherein: the unwinding mechanism 2 is used to release the busbar 1 from the material roll; the busbar 1 released by the unwinding mechanism 2 passes through the flux coating mechanism 3, the pressing mechanism 4 and the cutting mechanism 5 in sequence and is clamped and pulled by the traction mechanism 6; the flux coating mechanism 3 is used to apply flux to the working surface of the busbar 1; the pressing mechanism 4 is used to press the busbar 1; and the cutting mechanism 5 is used to cut the busbar 1.

[0082] By installing the above-mentioned flux coating mechanism 3 in the busbar feeding device, the flux can be evenly applied to the working surface of the busbar 1, and the coating process will not cause pollution to the machine and waste of flux. At the same time, the flux can be automatically replenished according to the detection result of the liquid level sensor; the busbar feeding device can prepare a busbar 1 of a predetermined length coated with flux during the production process of the photovoltaic cell module through the unwinding mechanism 2, flux coating mechanism 3, clamping mechanism 4, cutting mechanism 5 and traction mechanism 6 arranged in sequence.

[0083] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined in the appended claims.

Claims

1. A flux coating mechanism, characterized in that: The soldering flux coating mechanism comprises a soldering flux box and a coating wheel, wherein: The soldering flux box is provided with a liquid tank for containing soldering flux; The smear wheel is vertically arranged and rotatably mounted on the flux box, the lower end of the smear wheel extends below the flux liquid level in the liquid tank, the upper end of the smear wheel is located above the flux liquid level, the circumferential side surface of the smear wheel located above the liquid level is in contact with the surface of the pulled bus bar, the pulled bus bar moves to drive the smear wheel to rotate, and the flux is smeared on the surface of the bus bar in contact with the smear wheel.

2. The flux coating mechanism according to claim 1, characterized in that: The soldering flux box comprises a box body and a mounting seat arranged on the box body; The smear wheel is sleeved on the rotating shaft, and both ends of the rotating shaft are rotatably connected to the mounting seat through bearings.

3. The flux coating mechanism according to claim 2, characterized in that: The bearing is located above the flux liquid level.

4. The flux coating mechanism according to claim 2, characterized in that: The soldering flux box also includes a cover body, which is located below the bearing. A slot hole matching the smear wheel is provided on the cover body, and the lower end of the smear wheel extends through the slot hole and extends below the soldering flux liquid surface.

5. The flux coating mechanism according to claim 4, characterized in that: The cover body is provided with guide grooves on both sides of the slot hole, and the guide grooves are communicated with the slot hole.

6. The flux coating mechanism according to claim 2, characterized in that: The rotating shafts located on both sides of the smear wheel are respectively provided with at least one annular groove along the length direction.

7. The flux coating mechanism according to claim 2, characterized in that: The mounting seat is provided with two mounting grooves, and the two bearings are respectively mounted in the two mounting grooves; The soldering flux coating mechanism also includes an air blowing assembly for blowing air toward the bearing in the mounting groove to blow away the soldering flux that has entered between the inner ring and the outer ring of the bearing.

8. The flux coating mechanism according to claim 7, characterized in that: The blowing components are provided in two groups and correspond one to one with the bearings. The blowing components include a gas block and a blowing joint, which is installed on the gas block and connected to an external gas source. A gas channel is provided in the gas block, one end of the gas channel is connected to the blowing joint, and the other end is connected to the corresponding mounting groove.

9. The flux coating mechanism according to claim 7, characterized in that: The bearing is a bearing without a sealing ring, and the bearing is a ceramic bearing or a metal bearing.

10. The flux coating mechanism according to claim 2, characterized in that: The solder flux coating mechanism further comprises a pressing wheel and a floating mechanism. The pressing wheel is mounted on the mounting seat via the floating mechanism and is used to elastically press the busbar onto the coating wheel.

11. The flux coating mechanism according to claim 10, characterized in that: The floating mechanism includes a pressure wheel shaft, two guide rods and two springs, wherein: The mounting seat is provided with two oppositely arranged vertical waist holes, and the two ends of the pressure wheel shaft can be slidably inserted into the two vertical waist holes up and down respectively; The pressing wheel is sleeved on the pressing wheel shaft, and a gap is formed between the pressing wheel and the smearing wheel for the busbar to pass through; The guide rod is vertically arranged, with the lower end fixedly connected to one end of the pressure wheel shaft, and the upper end slidably connected to the mounting seat; The spring is sleeved on the guide rod, the upper end of the spring is in contact with the mounting seat, and the lower end of the spring is in contact with the pressure wheel shaft.

12. The flux coating mechanism according to claim 11, characterized in that: Baffles are respectively arranged on both sides of the pressing wheel, and the baffles are sleeved on the pressing wheel shaft.

13. The flux coating mechanism according to claim 1, characterized in that: The soldering flux coating mechanism further comprises a first guide wheel and a second guide wheel, wherein: The first guide wheel and the second guide wheel are respectively arranged in front and rear tracks of the smear wheel, and the bus bar is sequentially attached to the upper surface of the first guide wheel, the upper surface of the smear wheel and the lower surface of the second guide wheel, and the highest point of the bus bar is on the smear wheel.

14. The flux coating mechanism according to claim 1, characterized in that: The flux coating mechanism also includes a liquid level sensor and a liquid adding device. The liquid level sensor is arranged in the liquid tank and is used to detect the height of the flux liquid level; the liquid outlet end of the liquid adding device is connected to the liquid tank, the liquid level sensor is electrically connected to the liquid adding device, and the liquid adding device is used to automatically replenish the flux for the liquid tank according to the detection result of the liquid level sensor.

15. The flux coating mechanism according to claim 14, characterized in that: A partition is installed in the flux box to divide the liquid tank into a liquid adding tank and a material loading tank, and at least one slow flow tank is opened on at least one of the upper end and the lower end of the partition; The liquid level sensor is located in the liquid adding tank, and the smear wheel is located in the feeding tank.

16. A busbar feeding device, characterized in that: The busbar feeding device comprises the flux coating mechanism as claimed in any one of claims 1 to 15.

17. The busbar feeding device according to claim 16, characterized in that: The busbar feeding device further comprises an unwinding mechanism and a pressing mechanism, a cutting mechanism and a pulling mechanism which are arranged in sequence, wherein: The unwinding mechanism is used to unwind the busbar from the roll; The busbar released by the unwinding mechanism passes through the flux coating mechanism, the pressing mechanism and the cutting mechanism in sequence and is then clamped and pulled by the pulling mechanism; The soldering flux coating mechanism is used to apply soldering flux to the working surface of the busbar; The clamping mechanism is used to clamp the busbar; The cutting mechanism is used for cutting the busbar.

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