Solder strip soldering flux drying device and solder strip soldering flux coating system

Abstract

The utility model relates to a solder strip soldering flux drying device and a solder strip soldering flux coating system, the drying device comprises a hot air drying oven and a supporting pipe for a solder strip to pass through, the supporting pipe passes through an inner cavity of the hot air drying oven and is fixedly connected with the hot air drying oven, and the side wall of the supporting pipe is provided with ventilation openings arranged in an array. The coating system comprises an unwinding part, a spraying part, a first baking part, a first cooling part, a second baking part, a second cooling part and a winding part which are sequentially arranged, a second guide part is arranged between the first cooling part and the second baking part and used for steering the solder strip, and the second baking part is the solder strip soldering flux drying device. The supporting pipe in the drying device can support the welding strip which is loosened and drooped due to overlarge span and insufficient tension, and meanwhile, the situation that a scaling powder coating on the surface of the welding strip is attached to the pipe wall to be damaged due to adhesion is avoided, so that the scaling powder coating can be evenly distributed on the surface of the welding strip. According to the coating system, the scaling powder can be prevented from being torn and damaged by adhering to device components before being completely cured and not sticky.

Description

Technical Field

[0001] The utility model relates to the technical field of soldering strips, and in particular to a soldering strip flux drying device and a soldering strip flux coating system. Background Art

[0002] Solder ribbon, also known as tin-coated solder ribbon, is a crucial component of photovoltaic modules. It forms the electrical connection component and is used to connect photovoltaic cells in series or parallel, providing electrical conductivity and collecting electricity. Its quality directly impacts the current collection efficiency of the photovoltaic module. The quality of the solder ribbon depends on how well the flux cures on the ribbon, and the ribbon drying process plays a crucial role in this process. In conventional solder ribbon flux coating processes, the flux is cured in the drying apparatus. This often results in a longer ribbon length within the dryer to ensure optimal drying, thereby increasing the ribbon's residence time within the dryer, effectively increasing the ribbon's drying time. As the length of the ribbon increases within the dryer, the tension applied to both ends of the ribbon increases to ensure it remains straight and avoids sagging in the middle. However, excessive tension at both ends can easily cause the ribbon to break. Furthermore, existing techniques struggle to adjust the tension based on whether the ribbon is bent. This can lead to insufficient tension at both ends, causing the ribbon to become loose and sag during drying. This can cause the middle of the ribbon to bend and sag due to its own weight. When the ribbon bends and sags in the middle, the uncured, non-sticky flux on the ribbon can sag and adhere to the device components due to its own weight. When the ribbon bends and sags, the flux can stick to the device and pull on the ribbon, hindering its forward movement. Further forward movement can damage the flux coating on the ribbon, affecting production quality and even causing the ribbon to deform and break. Utility Model Content

[0003] The present invention addresses the problem in the prior art that, during drying, the solder ribbon droops, causing the flux to adhere to the device. This problem, along with the damage to the flux coating on the ribbon's surface as the ribbon continues to move forward, can even cause the ribbon to deform and break. The present invention provides a solder ribbon flux drying device and a solder ribbon flux coating system. The drying device prevents the solder ribbon from sagging within the drying chamber, preventing the flux on the ribbon from adhering to device components and, consequently, damaging the flux coating on the ribbon's surface, ensuring that the flux is evenly distributed across the ribbon's surface.

[0004] The technical solution adopted by the utility model is: a welding ribbon flux drying device, comprising a hot air oven and a support tube for the welding ribbon to pass through, the support tube passes through the inner cavity of the hot air oven and is fixedly connected to the hot air oven, and the side wall of the support tube is provided with vents arranged in an array to allow hot air from the hot air oven to be blown into the inner cavity of the support tube.

[0005] During the drying process, the support tube guides the ribbon, allowing it to enter and travel along its inner cavity from one end before exiting the hot air oven at the other end. As the ribbon enters the hot air oven, hot air is blown into the tube's sidewalls, drying the flux on the ribbon's surface, shortening its curing time and accelerating its curing. If the ribbon is too long, insufficient tension at both ends may cause it to bend and sag in the middle. This drooping ribbon contacts the inner wall of the support tube, preventing it from sagging and maintaining a level surface. Any uncured flux coating on the ribbon's surface will not adhere to device components, potentially damaging the coating and causing flux loss or uneven distribution.

[0006] The solder ribbon flux drying device in this solution features a support tube through which the ribbon passes. This tube not only guides the ribbon but also provides support for the sagging portion of the ribbon when it sags. This prevents the uncured flux coating on the ribbon from adhering to and damaging the device components, resulting in loss of flux or uneven distribution on the ribbon surface. The support tube provides support for sagging ribbons. Even if the ribbon is not sufficiently tensile, it will not sag and adhere to device components, potentially damaging the flux coating. The flux remains evenly distributed on the ribbon surface until it is fully cured and non-sticky, thus ensuring the quality of the ribbon.

[0007] Preferably, the device further includes a first guide portion, wherein the plurality of support tubes are linearly arranged in a direction perpendicular to the axis of the support tubes. The first guide portion is used to steer the solder strip so that the solder strip can pass through the support tubes in an S-shape. The plurality of support tubes are provided so that the solder strip entering the drying device passes through the support tubes in an S-shape. This can extend the length of the solder strip entering the drying device without increasing the length of the hot air oven. This not only extends the drying time of the solder strip and improves the drying effect of the flux on the solder strip, but also saves the volume occupied by the hot air oven and the support tubes.

[0008] Preferably, the first guide portion includes a base, a drive motor, and guide rollers. The guide rollers are rotatably connected to the base. The guide rollers include a first guide roller and a second guide roller. The axes of the first guide roller and the second guide roller are parallel, with a gap between them for the soldering ribbon to pass through. The drive shaft of the drive motor is connected to the first guide roller. The second guide roller is also slidably connected to the base to clamp the soldering ribbon between the first guide roller and the second guide roller. The drive motor drives the first guide roller to rotate, and the rotation of the first guide roller drives the soldering ribbon on the first guide roller forward. The drive motor has a tension control function that can adjust the tension on the soldering ribbon to ensure that the solder does not deform or even break due to excessive tension. The second guide roller is slidable and can clamp the soldering ribbon between the first guide roller and the second guide roller. In addition, the first guide roller and the second guide roller are both rotatably connected to the base, which can reduce friction between the guide rollers and the soldering ribbon, making it easier to move the soldering ribbon. The surface of the guide rollers is provided with an anti-stick coating to prevent flux from adhering to the guide rollers and damaging the coating.

[0009] Preferably, the support tube is an aluminum alloy tube, with both its inner and outer surfaces sandblasted and anodized. Aluminum alloy is chosen for its light weight, high strength, excellent thermal conductivity and corrosion resistance, and ease of processing. Sandblasting and anodizing further enhance the support tube's hardness and corrosion resistance, extending its service life.

[0010] Preferably, the hot air oven further comprises an exhaust fan, the exhaust duct of the exhaust fan being connected to the inner cavity of the hot air oven, the exhaust fan outlet duct being provided with a filter for filtering harmful gases within the hot air oven, and the interior of the hot air oven being provided with a temperature sensor for monitoring the temperature. The exhaust fan can accelerate the air circulation speed within the hot air oven, and the filter provided on the exhaust fan outlet duct can absorb harmful gases emitted by the flux, thereby preventing the direct discharge of hazardous substances. The temperature sensor can be provided to monitor the temperature within the hot air oven in real time, so that the solder ribbon within the hot air oven can be dried at a constant temperature, thereby improving the drying efficiency and effect.

[0011] A solder strip flux coating system includes an unwinding section, a spraying section, a first baking section, a first cooling section, a second baking section, a second cooling section and a winding section arranged in sequence. A second guide section is provided between the first cooling section and the second baking section to turn the solder strip. The second baking section is the above-mentioned solder strip flux drying device.

[0012] The unwinding device discharges the soldering ribbon collected thereon without flux spraying. The spraying section sprays flux on the surface of the soldering ribbon discharged from the unwinding section. After the flux is sprayed on the surface of the soldering ribbon, the soldering ribbon passes through the first baking section for preliminary drying of the flux. The first baking section briefly dries the soldering ribbon at high temperature to volatilize the organic solvent in the flux and preliminarily solidify the flux. The first cooling section cools the soldering ribbon coming out of the first baking section to reduce the viscosity of the flux on the surface of the soldering ribbon. The second baking section further bakes the flux coating on the surface of the soldering ribbon at low temperature to completely solidify the flux. The second cooling section quickly cools the soldering ribbon that has passed through the second baking section to prevent the flux from softening due to high temperature of the soldering ribbon. The reeling section is used to collect the soldering ribbon after the flux is completely solidified. A second guide portion is provided between the first cooling portion and the second baking portion. The second guide portion can change the forward direction of the solder strip, thereby shortening the length of the solder strip flux coating system. Similarly, one or more second guide portions can be provided at any position of the coating system to further shorten the length of the solder strip flux coating system, making its spatial layout in the workshop more reasonable.

[0013] When drying the soldering ribbon, the coating system in this solution first bakes the flux on the soldering ribbon at high temperature to solidify it, evaporates the organic solvent in the flux, and preliminarily solidifies the flux on the surface of the soldering ribbon to achieve a low viscosity to ensure that it can be transmitted. The soldering ribbon is then baked at low temperature to make the flux completely solidified and non-sticky, which can avoid the problem of adhesion damage to the flux coating on the surface of the soldering ribbon, resulting in local missing or uneven problems.

[0014] Preferably, the drying temperature of the first baking section is 100°C-200°C, and the drying temperature of the second baking section is 50°C-100°C. Experiments have shown that when performing preliminary drying of the flux on the soldering ribbon, the optimal temperature range is 100°C-200°C; when performing complete drying of the flux on the soldering ribbon, the optimal temperature range is 50°C-100°C.

[0015] Preferably, the first baking section includes a housing, a baking pipe, a hot air blower, an exhaust fan, and an exhaust pipe. The baking pipe is located in the inner cavity of the housing and is fixedly connected to the housing. Both ends of the baking pipe are provided with through holes for the solder strip to pass through. The hot air blower's outlet pipe passes through the housing and is connected to the inner cavity air inlet end of the baking pipe. The exhaust fan's inlet pipe passes through the housing and is connected to the inner cavity air outlet end of the baking pipe. The exhaust fan's outlet pipe is connected to the exhaust pipe. The exhaust pipe is provided with a filter to filter harmful gases. The baking pipe is also provided with a temperature sensing device. There are two temperature sensing devices, one located at the air inlet end and the other at the air outlet end of the inner cavity of the baking pipe. The housing can further prevent organic solvents volatilized from the flux from dispersing into the air and causing air pollution. The hot air blower bakes the solder strip at high temperature. The exhaust fan extracts gas and filters harmful gases through the filter. The two temperature sensing devices can measure the temperature of the air inlet and air outlet ends of the baking pipe.

[0016] Preferably, the spraying unit includes an ultrasonic atomizing spray nozzle for spraying flux onto the solder strip, and both the first and second cooling units are air-conditioned cooling devices. The ultrasonic atomizing spray nozzles used in the spraying unit ultrasonically atomize the flux. Ultrasonic atomization spraying achieves improved uniformity, thinner coating thickness, and higher precision. Ultrasonic spraying also significantly reduces paint splashing during the spraying process, conserving paint. The air-conditioned cooling device achieves faster heat dissipation and is easier to install and move.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a device for drying solder strip flux, which is provided with a support tube for the solder strip to pass through. The support tube not only guides the solder strip, but also provides support for the sagging solder strip. Even if the solder strip has insufficient tension, it will not sag and stick to the device components, causing the flux coating to be torn and damaged. This ensures that the flux can be evenly distributed on the surface of the solder strip until it is completely solidified, thereby guaranteeing the quality of the solder strip. The present invention also provides a solder strip flux coating system. When drying the solder strip, the coating system in the present invention first bakes the flux on the solder strip at high temperature, evaporates the organic solvent in the flux, and preliminarily solidifies the flux on the surface of the solder strip to a relatively low viscosity to ensure that it can be transmitted. The solder strip is then baked at low temperature to completely solidify the flux and make it non-sticky. This can avoid the problem of localized loss or uneven flux on the surface of the solder strip due to adhesion and damage of the flux coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a soldering flux drying device for a soldering ribbon according to the present invention;

[0019] Figure 2 This is a schematic structural diagram of a support tube in Example 1 of a soldering flux drying device for a soldering ribbon of the present invention;

[0020] Figure 3 This is a structural diagram of a support tube in Example 2 of a soldering flux drying device of the utility model;

[0021] Figure 4 This is a structural diagram of a soldering ribbon flux coating system of the utility model;

[0022] Figure 5 The utility model is a structural schematic diagram of the first baking part of a soldering ribbon flux coating system. DETAILED DESCRIPTION

[0023] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some parts in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0026] Example 1

[0027] A soldering flux drying device according to embodiment 1, Figure 1-Figure 2As shown, it includes a hot air oven 1 and a support tube 2 for passing a welding ribbon 12. The support tube 2 passes through the inner cavity of the hot air oven 1 and is fixedly connected to the hot air oven 1. The side wall of the support tube 2 is provided with an array of vents 201 for blowing hot air from the hot air oven 1 into the inner cavity of the support tube 2. The support tube 2 is a thin-walled pipe. In a direction perpendicular to the axis of the support tube 2, the side wall of the support tube 2 is provided with a group of vents 201. Each vent group 201 has four vents 201, and the four vents 201 are arranged equidistantly around the axis of the support tube 2. In the direction along the axis of the support tube 2, the side wall of the support tube 2 is provided with fourteen groups of vents 201, and the fourteen groups of vents 201 are arranged linearly and equidistantly along the axis of the support tube 2.

[0028] The working principle or process of this embodiment is as follows: When the soldering ribbon 12 is dried, it enters the inner cavity of the support tube 2 from one end and advances along the inner cavity of the support tube 2, passing through the hot air drying oven 1 and exiting from the other end of the support tube 2. As the soldering ribbon 12 enters the inner cavity of the hot air drying oven 1, hot air is blown into the inner cavity of the support tube 2 from the sidewall of the hot air drying oven 1, drying the flux on the surface of the soldering ribbon 12. When the soldering ribbon 12 is too long and the tension at both ends of the soldering ribbon 12 is insufficient to keep it taut, the middle portion of the soldering ribbon 12 bends and sags. The drooping soldering ribbon 12 abuts against the inner wall of the support tube 2, keeping the surface of the soldering ribbon 12 level.

[0029] Beneficial effects of this embodiment: The soldering ribbon 12 flux drying device in this scheme is provided with a support tube 2 for the soldering ribbon 12 to pass through. The support tube 2 can not only provide a guide for the soldering ribbon 12, but also provide support for the sagging part of the soldering ribbon 12 when the soldering ribbon 12 sags. Even if the tension of the soldering ribbon 12 is insufficient, it will not bend downward. The flux will not flow on the surface of the soldering ribbon 12 and can be evenly distributed on the surface of the soldering ribbon 12 until it is completely solidified, thereby ensuring the quality of the soldering ribbon 12.

[0030] Example 2

[0031] like Figure 3 The figure shows another embodiment of a solder strip flux drying device and coating system. The difference between this embodiment and embodiment 1 is that the support tube 2 is composed of metal wires, including nine circular metal wires 202 and four straight metal wires 203. The nine circular metal wires 202 are coaxially and equidistantly arranged. The straight metal wires 203 are fixedly connected to the circular metal wires 202. The straight metal wires 203 are parallel to the axis of the circular metal wires 202. The four straight metal wires 203 are equidistantly arranged in a circle with the axis of the circular metal wire 202 as the center.

[0032] The beneficial effects of this embodiment compared to embodiment 1 are as follows: the support tube 2 in this solution has a simpler structure and a lighter weight while being able to provide sufficient support for the welding strip 12 .

[0033] Other features, working principles and beneficial effects of this embodiment are consistent with those of Example 1.

[0034] Example 3

[0035] A third embodiment of a soldering flux drying device, such as Figure 1 As shown, based on Examples 1 and 2, the structure of the device is further limited.

[0036] Specifically, it also includes a first guide portion 3. There are seven support tubes 2. The seven support tubes 2 are arranged in a linear array perpendicular to their axis. The first guide portion 3 is used to turn the welding strip 12 so that the welding strip 12 can pass through the seven support tubes 2 in sequence in an S shape.

[0037] Specifically, the first guide part 3 includes a base, a drive motor, and a guide roller. The guide roller is rotatably connected to the base. The guide roller includes a first guide roller 301 and a second guide roller 302. The axes of the first guide roller 301 and the second guide roller 302 are parallel and a gap is left between the two for the welding strip 12 to pass through. The drive shaft of the drive motor is connected to the first guide roller 301, and the second guide roller 302 is also slidably connected to the base to clamp the welding strip 12 between the first guide roller 301 and the second guide roller 302.

[0038] Specifically, the support tube 2 is an aluminum alloy tube, and both the inner and outer surfaces of the support tube 2 are sandblasted and anodized.

[0039] Specifically, it also includes an exhaust fan, the exhaust duct of the exhaust fan is connected to the inner cavity of the hot air oven 1, a filter is provided on the air outlet duct of the exhaust fan to filter the harmful gas in the hot air oven 1, and a temperature sensor is provided inside the hot air oven 1 to monitor the temperature.

[0040] The beneficial effects of this embodiment include providing multiple support tubes 2 arranged in a linear array perpendicular to the axis of the support tube 2. This allows the length of the solder ribbon 12 that can enter the drying apparatus to be extended without increasing the length of the hot air drying oven 1, thus conserving the volume occupied by the hot air drying oven 1 and the support tube 2. The sliding second guide roller 302 can adjust the separation and convergence between the first guide roller 301 and the second guide roller 302, thereby clamping the solder ribbon. The traction force exerted by the first guide roller 301 to propel the solder ribbon 12 forward can be adjusted by controlling the tension of the drive motor. Furthermore, the first and second guide rollers 301, 302 are both rotatably connected to the base, reducing friction between the guide rollers and the solder ribbon 12 and facilitating its movement. The support tube 2 is constructed of aluminum alloy, offering light weight, high strength, excellent thermal conductivity, corrosion resistance, and ease of processing. Sandblasting and anodizing further enhance the hardness and corrosion resistance of the support tube 2, extending its service life. The exhaust fan can accelerate the air circulation speed inside the hot air oven 1, accelerating the drying of the solder ribbon 12. A filter is installed on the exhaust fan outlet duct to absorb harmful gases emitted by the flux, preventing the direct discharge of hazardous substances. The temperature sensor can monitor the temperature inside the hot air oven 1 in real time, so that the solder ribbon 12 in the hot air oven 1 can be dried at a constant temperature, further improving the drying efficiency and drying effect.

[0041] Example 4

[0042] A solder ribbon flux coating system, such as Figure 4 As shown, the device includes an unwinding section 4, a spraying section 5, a first baking section 6, a first cooling section 7, a second baking section 8, a second cooling section 9, and a winding section 10, which are arranged in sequence. A second guide section 11 is provided between the first cooling section 7 and the second baking section 8 to guide the solder ribbon 12. The second baking section 8 is a device for drying the flux of the solder ribbon 12 as described above. The drying temperature of the first baking section 6 is 100°C, and the drying temperature of the second baking section 8 is 50°C.

[0043] The working principle or working process of this embodiment is as follows: the unwinding device discharges the soldering ribbon 12 collected thereon without flux spraying, the spraying section 5 sprays flux on the surface of the soldering ribbon 12 discharged from the unwinding section 4, and the soldering ribbon 12 surface is sprayed with flux and then passes through the first baking section 6 to perform preliminary drying of the flux. The first baking section 6 briefly performs high-temperature drying on the soldering ribbon 12 to preliminarily solidify the flux. The first cooling section 7 cools the soldering ribbon 12 coming out of the first baking section 6. The cooled soldering ribbon 12 is guided by the second guide section 11 and then enters the second baking section 8 to perform further low-temperature baking on the flux coating on the surface of the soldering ribbon 12, so that the flux is completely solidified and non-sticky. The second cooling section 9 quickly cools the soldering ribbon 12 that passes through the second baking section 8. The winding section 10 is used to collect the soldering ribbon 12 after the flux is completely solidified.

[0044] The beneficial effects of this embodiment: When drying the solder ribbon 12, the coating system in this solution first bakes the flux on the ribbon at a high temperature to volatilize the organic solvent in the flux, reducing its initial solidification viscosity to a controllable level to meet transmission requirements. The ribbon 12 is then baked at a low temperature to completely solidify the flux and make it non-sticky, meeting winding requirements. This can avoid the problem of adhesion and damage to the flux coating. The optimal temperature range for the initial drying of the flux on the ribbon 12 is 100°C; the optimal temperature for the complete drying of the flux on the ribbon 12 is 50°C.

[0045] Example 5

[0046] like Figure 4-Figure 5 The figure shows an embodiment of a solder strip flux coating system, which further defines the system based on embodiment 4.

[0047] Specifically, the first baking part 6 includes an outer shell 601, a baking pipe 602, a hot air blower 603, an exhaust fan 604 and an exhaust pipe 605. The baking pipe 602 is located in the inner cavity of the outer shell 601 and is fixedly connected to the outer shell 601. Both ends of the baking pipe 602 are provided with through holes for the welding strip 12 to pass through. The air outlet duct of the hot air blower 603 passes through the outer shell 601 and is connected to the air inlet end of the inner cavity of the baking pipe 602. The air inlet duct of the exhaust fan 604 passes through the outer shell 601 and is connected to the air outlet end of the inner cavity of the baking pipe 602. The air outlet duct of the exhaust fan 604 is connected to the exhaust pipe 605. The exhaust pipe 605 is provided with a filter part for filtering harmful gases. The baking pipe 602 is also provided with a temperature sensing device 606. There are two temperature sensing devices 606, which are respectively located at the air inlet end and the air outlet end of the inner cavity of the baking pipe.

[0048] Specifically, the spraying part 5 includes an ultrasonic atomizing spray nozzle for spraying flux on the soldering ribbon 12 , and the first cooling part 7 and the second cooling part 9 are both air-conditioning cooling devices.

[0049] The beneficial effects of this embodiment are as follows: the housing 601 in the first baking section 6 can further prevent the volatilized organic solvent from the flux from spreading into the air and causing air pollution; the hot air blower 603 bakes the soldering strip 12 at high temperature; the exhaust fan 604 extracts the gas and filters the harmful gas through the filter section; the temperature sensing device 606 can measure the temperature of the air inlet and outlet ends of the baking pipe 602. The spraying section 5 uses an ultrasonic atomizing spray nozzle to ultrasonically atomize the flux. Ultrasonic atomizing spraying can achieve better uniformity, thinner coating thickness and higher precision. At the same time, ultrasonic spraying can also significantly reduce paint splashing during the spraying process, thereby saving paint. The air-conditioning cooling device can achieve a faster heat dissipation speed and is easier to install and move.

[0050] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A soldering flux drying device, characterized in that: The invention comprises a hot air oven (1) and a support tube (2) for allowing a welding strip (12) to pass through, wherein the support tube (2) passes through the inner cavity of the hot air oven (1) and is fixedly connected to the hot air oven (1), and the side wall of the support tube (2) is provided with ventilating openings (201) arranged in an array for allowing hot air from the hot air oven (1) to be blown into the inner cavity of the support tube (2); It also includes a first guide portion (3), there are a plurality of support tubes (2), and the plurality of support tubes (2) are linearly arranged in a direction perpendicular to the axis of the support tube (2), and the first guide portion (3) is used to turn the welding strip (12) so that the welding strip (12) can pass through the support tubes (2) in sequence in an S shape.

2. A soldering flux drying device according to claim 1, characterized in that: The first guide portion (3) includes a base, a drive motor, and a guide roller. The guide roller is rotatably connected to the base. The guide roller includes a first guide roller (301) and a second guide roller (302). The axes of the first guide roller (301) and the second guide roller (302) are parallel, and a gap is left between the two for the welding strip (12) to pass through. The drive shaft of the drive motor is connected to the first guide roller (301). The second guide roller (302) is also slidably connected to the base to clamp the welding strip (12) between the first guide roller (301) and the second guide roller (302).

3. The soldering flux drying device according to claim 1, characterized in that: The support tube (2) is an aluminum alloy tube, and both the inner and outer surfaces of the support tube (2) are subjected to sandblasting and anodizing treatments.

4. The soldering flux drying device according to claim 1, characterized in that: The invention also includes an exhaust fan, wherein the exhaust duct of the exhaust fan is connected to the inner cavity of the hot air oven (1), the air outlet duct of the exhaust fan is provided with a filter for filtering harmful gases in the hot air oven (1), and the interior of the hot air oven (1) is provided with a temperature sensor for monitoring the temperature.

5. A soldering flux coating system, characterized in that: The device comprises an unwinding section (4), a spraying section (5), a first baking section (6), a first cooling section (7), a second baking section (8), a second cooling section (9) and a winding section (10) which are arranged in sequence. A second guide section (11) is provided between the first cooling section (7) and the second baking section (8) for turning the soldering strip (12). The second baking section (8) is a soldering strip flux drying device as described in any one of claims 1 to 4.

6. A soldering ribbon flux coating system according to claim 5, characterized in that: The drying temperature of the first baking part (6) is 100°C-200°C, and the drying temperature of the second baking part (8) is 50°C-100°C.

7. A soldering ribbon flux coating system according to claim 6, characterized in that: The first baking part (6) comprises a shell (601), a baking pipe (602), a hot air blower (603), an exhaust fan (604) and an exhaust pipe (605); the baking pipe (602) is located in the inner cavity of the shell (601) and is fixedly connected to the shell (601); both ends of the baking pipe (602) are provided with through holes for the welding strip (12) to pass through; the air outlet pipe of the hot air blower (603) passes through the inner cavity of the shell (601) and the baking pipe (602) to enter the outer cavity. The air end of the baking pipe (602) is connected, the air inlet pipe of the exhaust fan (604) passes through the shell (601) and is connected to the air outlet end of the inner cavity of the baking pipe (602), the air outlet pipe of the exhaust fan (604) is connected to the exhaust pipe (605), and the exhaust pipe (605) is provided with a filter part for filtering harmful gases. The baking pipe (602) is also provided with a temperature sensing device (606), and there are two temperature sensing devices (606), which are respectively located at the air inlet end and the air outlet end of the inner cavity of the baking pipe (602).

8. The soldering flux coating system according to claim 5, characterized in that: The spraying part (5) includes an ultrasonic atomizing spray nozzle for spraying flux on the soldering strip (12).

9. The soldering flux coating system according to claim 5, characterized in that: The first cooling part (7) and the second cooling part (9) are both air-conditioning cooling devices.

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