A tacking device

Abstract

The application relates to the technical field of copper wire soldering processes, in particular to a drag soldering device which comprises a solder pot and a solder filtering pipe, one side of the solder pot is provided with a feeding port for the copper wire to pass in, the other side is provided with a discharging port for the copper wire to pass out, and the solder filtering pipe is arranged at the discharging port. The application has the advantages that full automation unmanned drag soldering is realized through the combined structure, the copper wire diameter size is matched with the solder filtering pipe, the excess solder liquid can be scraped off, and the effect of preventing the copper wire from being stacked with solder is achieved.

Description

Technical Field

[0001] This application relates to the technical field of copper wire soldering processes, and more particularly to a drag soldering device. Background Technology

[0002] Currently, copper wires used in many industries are soldered. The main purpose of soldering copper wires is to prevent oxidation and improve conductivity and solderability. Specifically, solder prevents copper wires from oxidizing and forming verdigris when exposed to air. Verdigris reduces conductivity and increases resistance. After soldering, the copper wire retains its conductivity and is less prone to discoloration. The method for soldering copper wires is generally a drag soldering process.

[0003] The copper wire drag soldering process begins by dragging a copper wire through a flux bath to immerse it in flux to enhance the adhesion of the molten solder, or by spraying flux onto the wire by machine. The copper wire is then quickly dragged into the solder bath for soldering. The molten solder is then rapidly cooled by air or water cooling. After removing the copper wire, any residual flux is cleaned and the wire is dried to ensure a smooth surface.

[0004] However, traditional drag soldering has the problem of solder buildup. This may be due to excessive solder feed or uncontrollable solder amount caused by the surface tension of the solder. This can result in protruding solder buildup on the copper wire soldering part, which requires manual trimming to remove the excess solder. This process is inefficient and has a low yield.

[0005] Therefore, how to improve the solder buildup phenomenon that occurs in conventional drag soldering processes has become a problem that needs to be solved. Summary of the Invention

[0006] The purpose of this application is to provide a drag welding device. The following technical solution is adopted:

[0007] Including solder pots and solder filter tubes;

[0008] The tin furnace has an inlet on one side for copper wires to pass through, and an outlet on the other side for copper wires to exit; the tin filter tube is installed at the outlet.

[0009] By adopting the above technical solution, a suitable diameter tin filter tube is selected to correspond to the diameter of the copper wire. The tin filter tube is placed at the outlet and can scrape off excess molten tin from the copper wire, preventing tin buildup on the copper wire and reducing the time required for subsequent manual removal of excess tin.

[0010] Optionally, the tin filter tube is detachably connected to the tin furnace.

[0011] By adopting the above technical solution, the detachable tin filter tube can be quickly replaced, and the tin filter tube of the corresponding diameter can be replaced according to the diameter of the copper wire.

[0012] Optionally, the tin filter tube is made of plastic material, and the temperature that the tin filter tube can withstand is from -180℃ to 260℃.

[0013] By adopting the above technical solution, the plastic tin filter tube is more likely to deform when subjected to external force, thereby reducing the inner diameter of the tin filter tube. At the same time, its high temperature resistance can also extend its service life in the tin furnace.

[0014] Optionally, a flux cartridge is also included, which is located on one side of the solder pot inlet.

[0015] By adopting the above technical solution, an oxide layer is easily formed on the metal surface during high-temperature welding. The flux can cover the metal surface to form a protective film, effectively preventing metal oxidation. At the same time, the use of flux also helps to form smooth and uniform solder joints, reduce the formation of solder balls and burrs, and avoid cold solder joints.

[0016] Optionally, the flux cylinder has a hole on its side wall for copper wires to pass through; a sponge is provided inside the flux cylinder, and the sponge also has a hole inside for copper wires to pass through, and the sponge abuts against the inner wall of the flux cylinder.

[0017] By adopting the above technical solution, the sponge can absorb the flux in the flux cylinder, and when the copper wire passes through the sponge, the wet sponge can evenly coat the copper wire surface with flux.

[0018] Optionally, it also includes an adjustment component, which is fixedly connected to the solder pot; one end of the adjustment component abuts against the side wall of the solder filter tube, and the adjustment component is used to change the diameter of the solder filter tube.

[0019] By adopting the above technical solution, the adjustment component is fixed inside the solder pot. By adjusting the adjustment component, the diameter of the solder filter tube is changed, and the solder filter tube scrapes off the excess solder.

[0020] Optionally, the adjusting assembly includes a lead screw and an adjusting nut, the lead screw being threadedly connected to the adjusting nut; the outer wall of the adjusting nut being fixed inside the solder pot; and the end face of one end of the lead screw abutting against the outer wall of the solder filter tube.

[0021] By adopting the above technical solution, the lead screw is manually adjusted, and the tin filter tube that abuts against one end of the lead screw is deformed by the squeezing force of the lead screw, reducing the inner diameter of the tin filter tube. When the change in the diameter of the copper wire is small, there is no need to replace the tin filter tube. Only the lead screw needs to be adjusted to change the diameter of the tin filter tube, which completes the scraping off of excess tin liquid, which is convenient and quick.

[0022] Optionally, a drive mechanism is also included, which includes a drive motor, a winding shaft, and support rods. The drive motor is located on one side of the tin furnace outlet. Two support rods are provided, which are located on both sides of the winding shaft. The winding shaft is rotatably connected to the support rods. The support rods are set perpendicular to the ground. One end of the winding shaft is drivenly connected to the drive motor.

[0023] By adopting the above technical solution, the drive motor can control the speed at which the winding shaft drags the copper wire. The speed variation is small and very stable, preventing the copper wire from loosening and the solder from being too slow, and preventing the copper wire from breaking due to being too fast.

[0024] Optionally, a temperature control mechanism is also included, which includes a temperature sensor located inside the solder pot and connected to the inner wall of the solder pot.

[0025] By adopting the above technical solution, the temperature sensor can monitor the internal temperature of the solder pot in real time, adjust the temperature of the solder liquid, and prevent the solder liquid temperature from being too high, which would aggravate the oxidation of the solder liquid and produce solder dross, or accelerate the volatilization of flux. If the temperature of the solder liquid is too low, the surface tension of the solder liquid will increase and the spreading area will decrease, resulting in deviation of the solder joint diameter and easy solder piling.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The tin filter tube is a plastic material that can deform under external force. When the adjustment component is adjusted by external force, the adjustment component will apply pressure to the tin filter tube, causing the tin filter tube to deform and thus change the diameter of the tin filter tube. The tin filter tube can scrape off excess molten tin on the copper wire, preventing tin buildup on the copper wire and reducing the time spent by workers to scrape off excess tin on the copper wire later. Attached Figure Description

[0028] Figure 1 This is a front view of the overall structure of the drag welding device;

[0029] Figure 2 This is a rear view of the overall structure of the drag welding device;

[0030] Figure 3 This is a cross-sectional view of the flux cylinder.

[0031] Figure 4 yes Figure 1 A cross-sectional view of section A.

[0032] In the picture,

[0033] 1. Tin furnace;

[0034] 2. Tin filter tube;

[0035] 3. Flux cartridge; 31. Sponge;

[0036] 4. Adjustment components; 41. Lead screw; 42. Adjusting nut;

[0037] 5. Drive mechanism; 51. Drive motor; 52. Winding shaft; 53. Support rod;

[0038] 6. Temperature control mechanism; 61. Temperature sensor. Detailed Implementation

[0039] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail below.

[0040] A drag welding device, as shown in the reference Figure 1 and Figure 2 The system includes a flux cylinder 3, a solder pot 1, a solder filter tube 2, an adjustment component 4, a drive mechanism 5, and a temperature control mechanism 6. The flux cylinder 3, solder pot 1, and drive mechanism 5 are all mounted on a single base, allowing for integrated installation. The flux cylinder 3 is located on the inlet side of the solder pot 1. The inlet of the solder pot 1 is the opening through which unsoldered copper wire enters the pot, while the outlet is the opening through which copper wire coated with molten solder exits. The solder filter tube 2 passes through the outlet. The adjustment component 4 is located inside the solder pot 1, with one end abutting against the solder filter tube 2. The adjustment component 4 is used to change the diameter of the solder filter tube 2. The temperature control mechanism 6 is located inside the solder pot 1 to monitor the temperature. The drive mechanism 5 is located on the outlet side of the solder pot 1 and is connected to the copper wire for dragging the wire. The solder filter tube 2, corresponding to the diameter of the copper wire, scrapes off excess molten solder accumulated on the copper wire, preventing solder buildup. When the diameter difference of the copper wire is small, it is only necessary to manually adjust the adjustment component 4. The adjustment component 4 applies a squeezing force to the tin filter tube 2, and the tin filter tube 2 deforms under the external force, thereby changing the diameter of the tin filter tube 2, which can complete the scraping off of excess tin liquid.

[0041] Reference Figure 3 The flux cylinder 3 has holes on its side wall for copper wires to pass through. The axes of the two holes are on the same straight line. The copper wire enters the flux cylinder 3 through the holes. A sponge 31 is provided inside the flux cylinder 3. The sponge 31 is fixed to the inner wall of the flux cylinder 3 by friction. The sponge 31 also has holes for copper wires to pass through. The sponge 31 can absorb the flux in the flux cylinder 3 into the sponge 31. When the copper wire passes through the sponge 31, the wet sponge 31 can evenly coat the surface of the copper wire with flux.

[0042] The solder pot 1 is made of titanium alloy. Since the temperature of molten solder is generally around 231℃, while titanium alloy maintains high strength even above 500℃, its surface forms a dense titanium oxide layer at high temperatures, effectively preventing oxygen penetration. Compared to ordinary stainless steel, titanium alloy has a lower coefficient of thermal expansion at molten solder operating temperatures, preventing furnace deformation due to thermal stress. Additionally, titanium alloy has resistance to molten solder corrosion and non-stick properties.

[0043] Two sets of tin-filtering tubes 2 are located at the inlet and outlet, respectively. The tubes can be inserted and removed at either end for easy disassembly. When the tubes need replacement due to wear, quick replacement is possible. Furthermore, the tubes can be quickly replaced with tubes of the appropriate diameter to accommodate different copper wire diameters. The tubes are made of a high-temperature resistant plastic material, such as polytetrafluoroethylene (PTFE), which can operate stably at temperatures ranging from -180℃ to 260℃ for extended periods and up to 300℃ for short periods. Therefore, PTFE can be used in molten solder at around 231℃. The tubes are hollow cylinders. When the adjusting component 4 applies pressure to the tubes, they deform, changing their diameter. For minor changes in copper wire diameter, tube replacement is unnecessary; simply adjusting the screw 41 changes the tube diameter, allowing excess molten solder to be scraped off quickly and easily.

[0044] After the copper wire is coated with flux from the flux cylinder 3, it enters the solder furnace 1 through the inlet for soldering. Inside the solder furnace 1, one end of the solder rod is clamped, and the other end is melted by the high temperature generated when energized, forming molten solder, which falls onto the copper wire. The copper wire has two sections: one is bare, and the other has a protective layer. The section with the protective layer cannot react with the molten solder and cannot adhere to it, so the molten solder slides off the protective layer into the solder furnace 1. The molten solder adheres to the bare part of the copper wire. Because the protective layer has a certain thickness, a step is formed at the joint between the two sections. When the copper wire is dragged by the drive mechanism 5, the molten solder, due to inertia, will press against the step and accumulate. Due to gravity, the accumulated molten solder will gather at the bottom, creating a protrusion. Therefore, before the molten solder solidifies, it will accumulate at the lower end of the joint, forming solder pile, resulting in uneven soldering. The molten solder filter tube 2 will scrape off the excess molten solder.

[0045] Reference Figure 4 The adjusting assembly 4 also has two sets, each corresponding to a tin filter tube 2. The adjusting assembly 4 includes a lead screw 41 and an adjusting nut 42. The outer wall of the adjusting nut 42 is fixedly connected to the solder pot 1. The lead screw 41 is threadedly connected to the adjusting nut 42, with one end of the lead screw 41 in surface-to-surface contact with the outer wall of the tin filter tube 2. The lead screw 41 can be moved vertically by manual adjustment. When the diameter difference of the copper wires is small, only manual adjustment of the adjusting assembly 4 is needed. The adjusting assembly 4 applies pressure to the tin filter tube 2, causing the tin filter tube 2 to deform under external force, thereby changing the diameter of the tin filter tube 2 and effectively scraping off excess molten solder.

[0046] The temperature control mechanism 6 includes a temperature sensor 61, which is located inside the solder pot 1 and connected to the inner wall of the solder pot 1. The temperature sensor 61 can monitor the internal temperature of the solder pot 1 in real time and adjust the temperature of the solder liquid. If the temperature of the solder liquid is too high, the oxidation of the solder liquid will be aggravated, producing solder dross, or the flux will evaporate faster. If the temperature of the solder liquid is too low, the surface tension of the solder liquid will increase, the spreading area will be reduced, resulting in deviation of the solder joint diameter and easy solder piling.

[0047] The copper wire is soldered by being dragged by the drive mechanism 5. The drive mechanism 5 includes a drive motor 51, a winding shaft 52, and a support rod 53. The drive motor 51 is located on one side of the outlet of the solder pot 1 and is fixedly connected to the upper end of the solder pot 1. There are two support rods 53, located on both sides of the winding shaft 52 respectively, and the winding shaft 52 is rotatably connected to the support rods 53. The support rods 53 are set perpendicular to the ground. One end of the winding shaft 52 is connected to the drive motor 51 for transmission. The drive motor 51 is a servo motor, which can control the speed at which the winding shaft 52 drags the copper wire. The copper wire is wound on the winding shaft 52. The speed of the copper wire changes little and is very stable. Because if the speed is too slow, the copper wire will loosen and the solder will be uneven, while if the speed is too fast, the copper wire will break easily.

[0048] The implementation principle of this application embodiment is as follows: the copper wire is precisely dragged through the flux cylinder 3 by the drive device, the flux is attached to the copper wire for wetting, and then it enters the tin furnace 1 for soldering. The section of molten tin with a protective layer on the copper wire cannot solidify and automatically falls off. The exposed copper wire is soldered with the help of flux. By adjusting the lead screw 41, the diameter of the tin filter tube 2 at the outlet is changed to scrape off the excess molten tin to prevent tin buildup and complete the entire soldering process.

[0049] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drag welding device, characterized in that, Includes a solder pot (1), a solder filter tube (2), and a regulating component (4); The tin furnace (1) has an inlet on one side for copper wires to pass through and an outlet on the other side for copper wires to exit; the tin filter tube (2) is installed at the outlet. The tin filter tube (2) is detachably connected to the tin furnace (1); The tin filter tube (2) is made of plastic material, and the temperature that the tin filter tube (2) can withstand is from -180℃ to 260℃; The adjustment component (4) is fixedly connected to the solder pot (1); one end of the adjustment component (4) abuts against the side wall of the solder filter tube (2), and the adjustment component (4) is used to change the diameter of the solder filter tube (2); The adjustment assembly (4) includes a lead screw (41) and an adjusting nut (42), the lead screw (41) and the adjusting nut (42) are threadedly connected; the outer wall of the adjusting nut (42) is fixed inside the tin furnace (1); the end face of one end of the lead screw (41) abuts against the outer wall of the tin filter tube (2).

2. The drag welding device according to claim 1, characterized in that, It also includes a flux cylinder (3), which is located on one side of the inlet of the tin furnace (1).

3. The drag welding device according to claim 2, characterized in that, The flux cylinder (3) has a hole on its side wall for copper wires to pass through; a sponge (31) is provided inside the flux cylinder (3), and the sponge (31) also has a hole inside for copper wires to pass through, and the sponge (31) abuts against the inner wall of the flux cylinder (3).

4. The drag welding device according to claim 1, characterized in that, It also includes a drive mechanism (5), which includes a drive motor (51), a winding shaft (52) and a support rod (53). The drive motor (51) is located on one side of the outlet of the tin furnace (1). There are two support rods (53), which are located on both sides of the winding shaft (52) and the winding shaft (52) is rotatably connected to the support rods (53). The support rods (53) are set perpendicular to the ground. One end of the winding shaft (52) is connected to the drive motor (51) for transmission.

5. The drag welding device according to claim 1, characterized in that, It also includes a temperature control mechanism (6), which includes a temperature sensor (61) located inside the tin furnace (1) and connected to the inner wall of the tin furnace (1).

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