Halogen-free scaling powder preparation device for solder wire

Abstract

The invention relates to the technical field of soldering flux preparation, and discloses a soldering tin wire halogen-free soldering flux preparation device which comprises a stirring barrel, supporting legs are symmetrically connected to the four sides of the bottom end of the stirring barrel, and a mixing chamber used for mixing halogen-free soldering flux raw materials is arranged in the stirring barrel; a rotating disc used for driving the stirring part to operate is rotationally connected into the mixing chamber, a backflow rod extending in the axial direction of the mixing chamber is connected to the bottom end of the rotating disc, spiral fan blades used for enabling raw materials at the bottom of the mixing chamber to flow back upwards are connected to the backflow rod, and horizontal extension plates are symmetrically connected to the two sides of the rotating disc; and driven rods are rotationally connected to the end parts of the horizontal extension plates on the two sides. Compared with the prior art, the preparation device for the halogen-free soldering flux for the solder wire has the advantages that multi-dimensional full mixing of raw materials is achieved, bottom deposition and side wall residues are reduced, the discharging efficiency is improved, and the product quality and the production scale of the halogen-free soldering flux are guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of flux preparation, in particular to a halogen-free flux preparation device for soldering wire. BACKGROUND

[0002] With the development of the electronic manufacturing industry towards environmental protection and high precision, the halogen-free flux has become the core raw material for soldering wire production because it does not contain halogen compounds, causes little environmental pollution and has high welding reliability. The performance of the halogen-free flux directly depends on the uniformity of the raw material mixing. In the preparation process, the raw materials with different properties such as resin, activator and solvent need to be fully dispersed and fused, so as to ensure the wettability, oxidation resistance and welding strength during the subsequent soldering of the soldering wire.

[0003] The existing halogen-free flux preparation device mainly adopts a single transverse or longitudinal stirring structure. The raw materials can only move in a single direction, and it is difficult to realize omnidirectional dispersion, so that the different raw materials cannot be fully contacted, the local component concentration is uneven, and finally the welding performance of the flux is affected. Moreover, the bottom raw materials are prone to deposit, the raw materials at the bottom of the mixing chamber are prone to accumulate under the action of gravity, the existing device lacks an effective backflow mechanism, the deposited raw materials at the bottom cannot be transported upward and mixed with the upper raw materials, the mixing is not thorough, and the raw materials remaining on the side wall are serious. The raw materials of the flux have certain viscosity, and are prone to adhere to the inner side wall of the mixing chamber during the mixing process. The traditional device has no special scraping structure, which not only causes waste of raw materials, but also affects the purity of the subsequent batches of products. Long-term accumulation may even cause deterioration, further reducing the product quality. SUMMARY

[0004] The technical problem to be solved by the application is to overcome the above technical defects, and provide a halogen-free flux preparation device for soldering wire, which realizes multi-dimensional mixing of raw materials, reduces bottom deposition and side wall residue, improves discharging efficiency, and guarantees the product quality and production scale of the halogen-free flux.

[0005] To solve the above technical problems, the technical solution provided by the application is as follows: a halogen-free flux preparation device for soldering wire, comprising a stirring barrel, the bottom end of the stirring barrel is symmetrically connected with support legs on four sides, and further comprising: A mixing chamber for mixing halogen-free flux raw materials is arranged in the stirring barrel, a rotating disc for driving the stirring components to rotate is rotatably connected in the mixing chamber, a backflow rod extending along the axis of the mixing chamber is connected to the bottom end of the rotating disc, helical vanes for backflowing the raw materials at the bottom of the mixing chamber upward are connected to the backflow rod, horizontal extension plates are symmetrically connected to the two sides of the rotating disc, driven rods are rotatably connected to the end portions of the two horizontal extension plates, stirring blades one for transversely stirring the raw materials and stirring blades two for longitudinally dispersing the raw materials are respectively connected to the two driven rods, and the stirring blades one and the stirring blades two cooperate with the helical vanes to realize multi-dimensional mixing of the halogen-free flux raw materials.

[0006] Preferably, a drive motor providing driving force is fixedly connected to the middle of the top of the mixing tank. The rotating end of the drive motor extends through the top wall of the mixing tank into the mixing chamber and is fixedly connected to the top center of the turntable. The drive motor drives the return rod, the horizontal extension plate and the driven rod to operate synchronously by driving the turntable to rotate.

[0007] Preferably, the top wall of the mixing chamber is recessed with an annular drive groove corresponding to the rotation trajectory of the horizontal extension plate. A locking tooth is uniformly and fixedly connected to one side wall of the annular drive groove along its circumference. The top of the driven rod extends upward into the annular drive groove and is fixedly connected with a driven gear that meshes with the locking tooth. When the driven rod revolves with the turntable, it rotates by meshing with the locking tooth.

[0008] Preferably, a scraping extension plate is provided horizontally on the side of the turntable away from the horizontal extension plate. A scraper is fixedly connected to the bottom wall of the free end of the scraping extension plate along the height direction of the mixing chamber. The outer wall of the scraper is tightly abutted against the inner wall of the mixing chamber. When the scraper rotates with the turntable, it scrapes off the flux material attached to the inner wall of the mixing chamber.

[0009] Preferably, the bottom wall of the mixing chamber has an annular slope structure and is inclined downward toward the discharge valve, so as to facilitate the finished flux to be collected and discharged into the discharge valve.

[0010] Preferably, the bottom of the mixing tank is connected to the mixing chamber at the middle part and is provided with a discharge valve 4 for discharging finished flux, and the upper part of one side of the mixing tank is connected to the mixing chamber and is provided with a feed inlet for adding halogen-free flux raw materials such as resin, activator, and solvent.

[0011] The advantages of this invention compared to the prior art are: 1. By combining the axial reflux of the spiral fan blades, the lateral stirring of the first stirring blade, and the longitudinal dispersing of the second stirring blade, a three-dimensional multi-dimensional mixing system is formed. The raw materials move in all directions (up, down, left, right, and back and forth) in the mixing chamber, which effectively solves the problem of the single mixing dimension of traditional devices, ensures the uniformity of raw material mixing, and improves the stability of flux performance.

[0012] 2. The reflux rod and spiral fan blades can transport the raw materials deposited at the bottom of the mixing chamber upwards, preventing the accumulation of raw materials at the bottom. The scraper rotates synchronously with the turntable, which can scrape off the raw materials attached to the side wall of the mixing chamber in real time, reducing raw material waste and avoiding residual raw materials from affecting product purity, thus ensuring the consistency of product quality between batches.

[0013] 3. When the drive motor drives the turntable to rotate, the driven rod synchronously realizes revolution and rotation, without the need for an additional power source, which simplifies the structure and improves the mixing efficiency; the annular slope structure of the bottom wall of the mixing chamber accelerates the collection and discharge of finished flux, shortens the production cycle, meets the needs of large-scale production, and has high production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of a halogen-free flux preparation device for solder wire according to the present invention.

[0015] Figure 2 This is a schematic diagram of the top wall structure of the mixing chamber of a halogen-free flux preparation device for solder wire according to the present invention.

[0016] Figure 3 This is a schematic diagram of the internal structure of the top wall of the mixing chamber of a halogen-free flux preparation device for solder wire according to the present invention.

[0017] Figure 4 This is a top view of the rotating disk of a halogen-free flux preparation device for solder wire according to the present invention.

[0018] As shown in the figure: 1. Mixing tank; 2. Support leg; 3. Mixing chamber; 4. Discharge valve; 5. Feed inlet; 6. Turntable; 7. Return rod; 8. Spiral fan blade; 9. Horizontal extension plate; 10. Driven rod; 11. Drive motor; 12. Annular drive groove; 13. Gear; 14. Driven gear; 15. Scraper extension plate; 16. Scraper. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] To facilitate the mixing and stirring of the flux materials in mixing tank 1, combined with the attached... Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 A halogen-free flux preparation device for solder wire includes a mixing tank 1, with support legs 2 symmetrically connected to the four sides of the bottom end of the mixing tank 1. The device also includes a mixing chamber 3 for mixing halogen-free flux raw materials inside the mixing tank 1. A turntable 6 for driving the mixing components is rotatably connected inside the mixing chamber 3. A reflux rod 7 extending axially along the mixing chamber 3 is connected to the bottom end of the turntable 6. A spiral fan blade 8 for refluxing the raw materials at the bottom of the mixing chamber 3 upwards is connected to the reflux rod 7. Horizontal extension plates 9 are symmetrically connected to both sides of the turntable 6. Driven rods 10 are rotatably connected to the ends of both horizontal extension plates 9. A stirring blade 1 for horizontally stirring the raw materials and a stirring blade 2 for vertically dispersing the raw materials are respectively connected to the driven rods 10. The stirring blade 1 and stirring blade 2, together with the spiral fan blade 8, achieve multi-dimensional mixing of the halogen-free flux raw materials.

[0021] To facilitate overall drive and improve mixing efficiency, combined with the attached Figure 2 and attached Figure 3A drive motor 11 is fixedly connected to the middle of the top of the mixing tank 1 to provide driving force. The rotating end of the drive motor 11 extends through the top wall of the mixing tank 1 into the mixing chamber 3 and is fixedly connected to the top center of the turntable 6. The drive motor 11 drives the turntable 6 to rotate, thereby driving the return rod 7, the horizontal extension plate 9 and the driven rod 10 to operate synchronously.

[0022] When the drive motor 11 drives the turntable 6 to rotate, the driven rod 10 synchronously realizes revolution and rotation, without the need for an additional power source, which simplifies the structure and improves the stirring efficiency.

[0023] To ensure overall transmission stability, combined with the attached... Figure 2 and attached Figure 3 The mixing chamber 3 has an annular drive groove 12 recessed in the top wall corresponding to the rotation trajectory of the horizontal extension plate 9. A locking tooth 13 is uniformly fixedly connected to one side wall of the annular drive groove 12 along its circumference. The driven rod 10 extends upwards into the annular drive groove 12 and is fixedly connected to a driven gear 14 that meshes with the locking tooth 13. When the driven rod 10 revolves with the turntable 6, it rotates by meshing with the locking tooth 13. The driven gear 14 and the driven rod 10 are interference-fitted. When the driven rod 10 revolves with the turntable 6, it rotates by meshing with the locking tooth 13.

[0024] The horizontal extension plate 9 drives the driven rod 10 to revolve around the circumference of the mixing chamber 3. At the same time, the driven gear 14 at the top of the driven rod 10 meshes with the retaining teeth 13 on the inner side wall of the annular drive groove 12, generating a rotational motion during the revolution. The revolution and rotation of the driven rod 10 drive the stirring blade one and stirring blade two to move synchronously.

[0025] To facilitate the scraping of raw materials from the inner wall of mixing chamber 3, combined with the attached... Figure 4 A scraping extension plate 15 is horizontally extended on the turntable 6 away from the horizontal extension plate 9. A scraper 16 is fixedly connected to the bottom wall of the free end of the scraping extension plate 15 along the height direction of the mixing chamber 3. The outer side wall of the scraper 16 is tightly abutted against the inner side wall of the mixing chamber 3. When the scraper 16 rotates with the turntable 6, it scrapes off the flux material attached to the inner side wall of the mixing chamber 3.

[0026] When the scraper extension plate 15 rotates with the turntable 6, it drives the scraper 16 at the bottom to make a circular motion along the inner wall of the mixing chamber 3. The scraper 16 is in close contact with the inner wall of the mixing chamber, scraping off the raw material attached to the wall surface in real time. The scraped raw material falls back into the mixing chamber 3 to participate in the mixing, ensuring that there is no raw material residue.

[0027] The bottom wall of the mixing chamber 3 has an annular slope structure and is inclined downward toward the discharge valve 4, which facilitates the finished flux to be collected and discharged into the discharge valve 4. Since the bottom wall of the mixing chamber 3 is an annular slope and is inclined toward the discharge valve 4, the finished flux is quickly collected along the slope to the discharge valve 4 under the action of gravity, and discharged into the collection container through the discharge valve 4, thus completing the preparation process of halogen-free flux.

[0028] The bottom middle of the mixing tank 1 is connected to the mixing chamber 3 and is provided with a discharge valve 4 for discharging finished flux. The upper end of one side of the mixing tank 1 is connected to the mixing chamber 3 and is provided with a feed inlet 5 for adding halogen-free flux raw materials such as resin, activator, and solvent.

[0029] In specific implementation of this invention: First, open the sealing cap of the feed inlet 5. According to the formula ratio of the halogen-free flux, put the resin, activator, solvent and other raw materials into the mixing chamber 3 through the feed inlet 5 in sequence. The amount of raw materials put in should not exceed 70% of the volume of the mixing chamber 3 to avoid splashing of raw materials during the mixing process. After the raw materials are put in, close the sealing cap to ensure that the mixing chamber 3 is in a sealed state.

[0030] Start the drive motor 11. After the drive motor 11 starts, its rotating end drives the turntable 6 to rotate coaxially in the mixing chamber 3 at the same speed as the drive motor 11 through the coupling.

[0031] Simultaneously, as the turntable 6 rotates, it synchronously drives the bottom return rod 7, the horizontal extension plates 9 on both sides, and the scraper extension plate 15 on the other side to rotate at the same angular velocity. During the rotation of the return rod 7, the spiral fan blades 8 on it generate an upward thrust, which transports the raw material deposited at the bottom of the mixing chamber 3 upward along the axial direction, so that the raw material at the bottom and the raw material at the top are in full contact; the horizontal extension plate 9 drives the driven rod 10 to revolve around the circumference of the mixing chamber 3.

[0032] Then, the driven gear 14 at the top of the driven rod 10 meshes with the retaining teeth 13 on the inner wall of the annular drive groove 12, generating a rotational motion during the revolution. The revolution and rotation of the driven rod 10 drive the stirring blade one and stirring blade two to move synchronously. The stirring blade one shears and stirs the raw material in the transverse direction, breaking up the raw material agglomerates, while the stirring blade two disperses the raw material in the longitudinal direction, so that the raw material can be fully dispersed in both the horizontal and vertical directions. Combined with the axial backflow effect of the spiral fan blade 8, a comprehensive and multi-dimensional mixing effect is formed. When the scraper extension plate 15 rotates with the turntable 6, it drives the scraper 16 at the bottom to make a circular motion along the inner wall of the mixing chamber 3. The scraper 16 is in close contact with the inner wall of the mixing chamber, scraping off the raw material attached to the wall surface in real time. The scraped raw material falls back into the mixing chamber 3 to participate in the mixing, ensuring that there is no raw material residue.

[0033] After mixing is complete, turn off the drive motor 11. After the turntable 6 and all stirring components have completely stopped running, slowly open the discharge valve 4. Since the bottom wall of the mixing chamber 3 is an annular slope and tilts towards the discharge valve 4, the finished flux quickly gathers along the slope to the discharge valve 4 under the action of gravity and is discharged into the collection container through the discharge valve 4, thus completing the preparation process of halogen-free flux.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A halogen-free flux preparation device for solder wire, comprising a stirring barrel (1), support legs (2) are symmetrically connected to the bottom end of the stirring barrel (1), characterized in that, Also include: The mixing chamber (3) is arranged in the stirring barrel (1) for mixing halogen-free flux raw materials, the rotating disc (6) is rotatably connected in the mixing chamber (3) for driving the stirring component to operate, the bottom end of the rotating disc (6) is connected with the backflow rod (7) extending along the axial direction of the mixing chamber (3), the backflow rod (7) is connected with the spiral fan blade (8) for flowing upward the raw materials at the bottom of the mixing chamber (3), the horizontal extension plates (9) are symmetrically connected on both sides of the rotating disc (6), the driven rods (10) are rotatably connected on the end of the horizontal extension plates (9), the stirring blades one and two are respectively connected on the driven rods (10) for transversely stirring the raw materials and longitudinally scattering the raw materials, the stirring blades one and two cooperate with the spiral fan blade (8) to realize the multi-dimensional mixing of the halogen-free flux raw materials.

2. A halogen-free flux preparation device for solder wire according to claim 1, characterized in that: The driving motor (11) is fixedly connected to the middle part of the top end of the stirring barrel (1) for providing driving force, the rotating end of the driving motor (11) extends into the mixing chamber (3) through the top wall of the stirring barrel (1) and is fixedly connected to the top center of the rotating disc (6), the driving motor (11) drives the rotating disc (6) to rotate to drive the backflow rod (7), the horizontal extension plate (9) and the driven rod (10) to operate synchronously.

3. A halogen-free flux preparation device for solder wire according to claim 1, characterized in that: The annular driving groove (12) is concavely arranged in the rotating track of the horizontal extension plate (9) on the inner top wall of the mixing chamber (3), the ratchet (13) is uniformly fixedly connected to one side wall of the annular driving groove (12) along the circumferential direction, the driven rod (10) extends upward into the annular driving groove (12) and is fixedly connected with the driven gear (14) engaged with the ratchet (13), when the driven rod (10) revolves with the rotating disc (6), the driven gear (14) and the ratchet (13) are engaged to realize the rotation.

4. A halogen-free flux preparation device for solder wire according to claim 1, characterized in that: The material scraping extension plate (15) is horizontally arranged on the side of the rotating disc (6) away from the horizontal extension plate (9), the scraper (16) is fixedly connected to the bottom wall of the free end of the material scraping extension plate (15) along the height direction of the mixing chamber (3), the outer side wall of the scraper (16) is closely arranged against the inner side wall of the mixing chamber (3), and the scraper (16) scrapes the flux raw materials attached to the inner side wall of the mixing chamber (3) when the rotating disc (6) rotates.

5. A halogen-free flux preparation device for solder wire according to claim 1, characterized in that: The bottom wall of the mixing chamber (3) is in the form of a ring-shaped slope surface and is downwardly inclined to the direction of the discharge valve (4) to facilitate the finished flux to be collected and discharged to the discharge valve (4).

6. A halogen-free flux preparation device for solder wire according to claim 1, characterized in that: The discharge valve (4) is arranged in the middle part of the bottom end of the stirring barrel (1) and communicates with the mixing chamber (3) for discharging the finished flux, and the feeding port (5) is arranged in the upper end of one side of the stirring barrel (1) and communicates with the mixing chamber (3) for feeding the halogen-free flux raw materials such as resin, activator and solvent.

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