Air-cooled soldering flux collecting device for reflow soldering furnace

Abstract

The invention relates to the technical field of reflow soldering furnace soldering flux collection, in particular to an air-cooled soldering flux collection device for a reflow soldering furnace, which comprises a module box, a movable plate is clamped on the side surface of the module box, a condensation mechanism is arranged in the module box, and a flow guide mechanism is arranged on the side surface of the condensation mechanism. A collecting mechanism is arranged in the condensing mechanism, the condensing mechanism comprises a collecting plate, a collecting cavity is formed in the side face of the collecting plate, and inner cylinders are arranged at the positions, corresponding to the collecting cavity, in the module box at equal intervals. By arranging the condensation mechanism, the flow guide mechanism and the collection mechanism, scaling powder steam in the reflow soldering furnace can be collected in a centralized mode, waste is avoided, it can be guaranteed that when gas circulates in the furnace, the scaling powder steam cannot flow to the position of the cooling module, and the cooling efficiency is improved. And after the scaling powder is recycled, waste heat can be reused, the use energy consumption of equipment is reduced, the scaling powder does not need to be manually wiped, and the scaling powder can be intensively collected in the later period and is convenient to take.

Description

Technical Field

[0001] The present invention relates to the technical field of flux collection for reflow soldering furnaces, and particularly to an air-cooled flux collection device for a reflow soldering furnace. Background Art

[0002] A reflow soldering furnace is a device used for soldering circuit boards carrying electronic components. It provides a heating environment to heat the solder paste until it melts, enabling the surface-mounted components and the circuit board to be reliably bonded together through the solder paste alloy. In addition to the heating module in the reflow soldering furnace, there is a cooling module to ensure metallurgical properties and reduce the outgoing board temperature. In an air reflow soldering furnace, the flux vapor is directly discharged from the furnace body before cooling to ensure that no flux condensate remains in the cooling module, which causes waste of flux.

[0003] In addition, in most nitrogen-protected reflow soldering furnaces, in order to reduce the consumption of nitrogen (N2), the internal mixed gas is recycled, and the flux vapor cannot be directly discharged from the furnace body. Therefore, the flux vapor has the opportunity to come into full contact with the cooling module, causing its temperature to drop below 110 °C and condensation to occur. These flux condensate liquids adhere to the reflux orifice plate of the cooling module. When the liquid flux accumulates to a certain extent, it will form droplets and eventually drip down, with a high probability of dripping onto the printed circuit board (PCB), resulting in unqualified or even scrapped circuit boards.

[0004] To prevent such events, the common practice in the industry is to regularly wipe and clean the surface of the reflux orifice plate in the cooling area manually, or to recover the flux inside the vapor through an additional recovery module. Existing recovery devices generally directly cool the flux into a liquid and flow it into a collection box for collection. This causes the gas temperature to drop suddenly, and when it is recycled back into the furnace body, a heating module is required for reheating, resulting in increased energy consumption. Moreover, the cooled flux will adhere to the inside of the collection box later, making it inconvenient for subsequent material collection and recovery. For this reason, we propose an air-cooled flux collection device for a reflow soldering furnace. Summary of the Invention

[0005] In order to overcome the technical problems existing in the above-mentioned prior art, the present invention provides an air-cooled flux collection device for a reflow soldering furnace.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: It includes a module box, with a movable plate snap-fitted on the side of the module box. A condensation mechanism is arranged inside the module box, a diversion mechanism is arranged on the side of the condensation mechanism, and a collection mechanism is arranged inside the condensation mechanism;

[0007] The condensation mechanism includes a collection plate. A collection cavity is formed on the side of the collection plate. Inner cylinders are equidistantly arranged inside the module box corresponding to the position of the collection cavity. Heat conduction plates are fixedly installed equidistantly on the side of the inner cylinder. An outer cylinder is fixedly installed on the side of the inner cylinder.

[0008] The diversion mechanism includes an installation box. An inner cavity is formed on the lower side of the installation box. An adjustment cylinder is movably installed inside the inner cavity. A first guiding groove and a second guiding groove are formed on the side of the adjustment cylinder. A clamping block and a first electric push rod are arranged inside the adjustment cylinder. A first exhaust pipe and a second exhaust pipe are alternately arranged on the side of the installation box.

[0009] The collection mechanism includes a linkage rod. A first gear, a second gear and a motor are arranged on the side of the linkage rod. A second electric push rod is arranged on the upper side of the linkage rod. A scraping plate, a first connecting rod and a second connecting rod are arranged on the side of the linkage rod corresponding to the inner side of the inner cylinder.

[0010] Further, the collection plate is movably arranged inside the module box and is fixedly installed at the side position of the movable plate. An air inlet groove is formed on the side of the collection plate and runs through it to the inside of all collection cavities. A first air inlet pipe is fixedly installed through the side of the module box and is clamped at the position inside the air inlet groove.

[0011] Further, the inner cylinder is attached to the side of the collection plate. The outer cylinder covers the heat conduction plate. Second air inlet pipes are fixedly installed through the side of the outer cylinder equidistantly and the second air inlet pipes run through the outer cylinder and the module box respectively to connect the interiors of all outer cylinders.

[0012] Further, the installation box is fixedly installed on the top side inside the module box and is fixedly connected to the upper side positions of the inner cylinder and the outer cylinder. The inner cavity corresponds to the positions of the outer cylinder and the inner cylinder. There is a distance between the side of the adjustment cylinder and the inner wall surface of the inner cavity. The first guiding groove is formed on the side of the adjustment cylinder corresponding to the first protrusion of the inner cavity. The second guiding groove is formed on the side of the adjustment cylinder corresponding to the second protrusion of the inner cavity.

[0013] Further, a slot is formed inside the adjustment cylinder. The clamping block is movably installed inside the slot. The first electric push rod is fixedly arranged between the side of the clamping block and the wall surface of the slot. The ports of the first exhaust pipe and the second exhaust pipe run through the installation box to the two protrusions of the inner cavity respectively and correspond to the air outlet positions of the first exhaust pipe and the first guiding groove.

[0014] Further, the linkage rod is arranged inside the inner cylinder. A constraint groove is formed on the side of the linkage rod. The first gear is movably sleeved on the side of the linkage rod and is meshed and installed inside the constraint groove. A synchronous belt is meshed and sleeved on the side of the first gear. The second gear is arranged on the upper side of the module box and is arranged inside the synchronous belt and meshed with it. The motor is fixedly installed on the upper side of the synchronous belt.

[0015] Furthermore, a matching cavity is provided at the output end of the second electric push rod and the linkage rod is rotatably installed inside the matching cavity. A connecting air pipe is fixedly provided on the wall of the matching cavity and the connecting air pipe passes through the matching cavity.

[0016] Furthermore, the scraper is fitted onto the inner side of the inner cylinder, the first connecting rod and the second connecting rod are fixedly mounted on both sides of the scraper and are also fixedly connected to the side positions of the linkage rod, a guide cavity is provided inside the scraper, exhaust holes are equidistantly provided on both walls of the guide cavity, a connecting groove is provided on the upper side of the linkage rod and respectively passes through the first connecting rod and the second connecting rod to the inside of the guide cavity.

[0017] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0018] 1. The present invention arranges a condensing mechanism, a guiding mechanism and a collecting mechanism, so that the flux vapor inside the reflow soldering furnace can be collected centrally to avoid waste, and can ensure that when the gas circulates in the furnace, the flux vapor will not flow to the cooling module position. After the flux is recovered, the waste heat can be reused to reduce the energy consumption of the equipment. There is no need to wipe the flux manually. The flux can be collected centrally in the later stage and it is convenient to take the material.

[0019] 2. The present invention can modularly add corresponding components according to needs by setting up a condensation mechanism and a guide mechanism, so as to stably recover the flux vapor. The corresponding components can be refrigerated in conjunction with the cold air in the furnace to condense and collect the flux inside the steam. The cold air that takes away the heat can be combined with the condensed steam to form warm gas and circulate back to the furnace, thereby reducing the energy consumption of the corresponding internal heating module for heating the gas and avoiding heat waste.

[0020] 3. The present invention can perform corresponding unified driving by setting up a collecting mechanism, and can scrape the recovered flux for better recovery. In addition, the internal component pipelines can be connected to allow the warm gas to be circulated and recovered to ensure the recovery effect of the flux.

[0021] 4. The present invention arranges a heat conduction plate, which can conduct heat to the side of the inner cylinder. When cold air takes away the temperature of the side of the heat conduction plate for circulation, the heat conduction plate can absorb heat and cool the inner cylinder. When cold air absorbs the temperature of the side of the heat conduction plate and does not circulate, the temperature is kept warm on the side of the inner cylinder, and the inner cylinder is no longer cooled. The above can be used in accordance with different demand conditions to make the inner cylinder produce cooling and heat preservation states.

[0022] 5. By providing the adjusting cylinder and its peripheral components, when the adjusting cylinder is in the default state, the second guiding groove communicates with the interior of the outer cylinder, allowing the cold air to carry away the heat of the heat conducting plate. When the adjusting cylinder is driven, the second guiding groove does not communicate with the interior of the outer cylinder, enabling the cold air to remain inside the outer cylinder, allowing the inner cylinder to be used in different states. Additionally, the first electric push rod is provided to push the clamping block against the side of the linkage rod, enabling the adjusting cylinder to be driven to rotate by the linkage rod, eliminating the need for an additional driving motor to drive the adjusting cylinder, further reducing the energy consumption during equipment operation.

[0023] 6. By providing the first gear and its peripheral components, the synchronous belt can drive all the first gears to rotate, causing the first gear to drive the linkage rod to rotate. This allows a single motor to be used for driving, reducing the energy consumption of the equipment. Additionally, the first gear can slide within the constraint groove, enabling the linkage rod to be driven to rotate even when it moves up and down inside the second gear.

[0024] 7. By providing the connecting air pipe, the scraper and its peripheral components, the connecting air pipe can be used to drive the linkage rod to move up and down, enabling the scraper to fit against the inner side of the inner cylinder and scrape the flux on the side of the inner cylinder. The scraper and the first connecting rod can also fit against the side and bottom of the collection chamber to scrape and break the flux inside the collection chamber, preventing the flux inside the collection chamber from cooling and caking, which would otherwise make it difficult to remove later, facilitating subsequent material extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the present invention;

[0026] Figure 2 is the semi-sectional structural schematic diagram of the present invention;

[0027] Figure 3 is the exploded structural schematic diagram of the condensation mechanism of the present invention;

[0028] Figure 4 is the partial structural schematic diagram of the outer cylinder of the present invention;

[0029] Figure 5 is the partial exploded structural schematic diagram of the flow guiding mechanism of the present invention;

[0030] Figure 6 is of the present invention Figure 2 magnified structural schematic diagram at position A;

[0031] Figure 7 is the partial structural schematic diagram of the second electric push rod of the present invention;

[0032] Figure 8 is the partial exploded structural schematic diagram of the collection mechanism of the present invention.

[0033] Wherein: 1. Module box; 11. Movable plate; 2. Condensing mechanism; 21. Collection plate; 211. Air inlet groove; 22. Collection chamber; 23. First intake pipe; 24. Outer cylinder; 241. Second intake pipe; 25. Inner cylinder; 26. Heat conduction plate; 3. Flow guiding mechanism; 31. Installation box; 32. Inner cavity; 33. Adjusting cylinder; 34. First guiding groove; 35. Second guiding groove; 36. Slot; 361. Block; 362. First electric push rod; 37. First exhaust pipe; 38. Second exhaust pipe; 4. Collection mechanism; 41. Linking rod; 411. Constraint groove; 42. First gear; 421. Second gear; 422. Synchronous belt; 423. Motor; 43. Second electric push rod; 431. Matching cavity; 44. Connecting air pipe; 45. Scraper; 451. First connecting rod; 452. Second connecting rod; 453. Flow guiding cavity; 454. Exhaust hole; 46. Connecting groove. Detailed implementation manners

[0034] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments can all be obtained from commercial channels unless otherwise specified.

[0035] Embodiment: As Figure 1 and Figure 2 shown, an air-cooled flux collection device for a reflow soldering furnace includes a module box 1. The module box 1 is a rectangular box with a hollow side. The module box 1 can be modularly installed corresponding to the position of the internal heating module of the reflow soldering furnace. A movable plate 11 is clamped and arranged on the side of the module box 1 and fixed at the side position of the module box 1 by screws. The movable plate 11 is a rectangular plate. A condensing mechanism 2 for collecting flux is arranged inside the module box 1. A flow guiding mechanism 3 for recovering waste heat for utilization is arranged on the side of the condensing mechanism 2. A collection mechanism 4 for driving in multiple states and separately recovering subsequent flux is arranged inside the condensing mechanism 2;

[0036] The condensing mechanism 2 provided can recover the flux and can cooperate with subsequent components to recover waste heat;

[0037] As Figures 2 to 4As shown, the condensing mechanism 2 includes a collecting plate 21 that is movably arranged inside the module box 1 and the collecting plate 21 is fixedly installed at the side position of the movable plate 11. The collecting plate 21 is a rectangular plate, and collecting chambers 22 are equidistantly opened on the side of the collecting plate 21. The collecting chambers 22 are circular chambers. An air inlet groove 211 that penetrates through the collecting chambers 22 is opened on the side of the collecting plate 21, and the air inlet groove 211 is a circular groove. A first air inlet pipe 23 is fixedly installed on the side of the module box 1 and the first air inlet pipe 23 is clamped in the air inlet groove 21. 1, one end of the first air inlet pipe 23 is connected to the flux vapor collection position of the heating module position of the reflow soldering furnace, the first air inlet pipe 23 is a circular tube, an inner cylinder 25 is equidistantly arranged at the position of the collecting chamber 22 inside the module box 1, and the inner cylinder 25 is attached to the side position of the collecting plate 21, the inner cylinder 25 is a hollow funnel-shaped cylinder, and a heat conducting plate 26 is equidistantly fixedly installed on the side of the inner cylinder 25, and the heat conducting plate 26 is a fin-shaped plate made of heat conducting material, and an outer cylinder 24 is fixedly installed on the side of the inner cylinder 25, and the outer cylinder 24 connects the heat conducting plate 21 to the outer cylinder 24. 6 is covered, the cross section of the outer cylinder 24 is a "C"-shaped cylinder, and the second air inlet pipe 241 is equidistantly penetrated and fixedly installed on the side of the outer cylinder 24, and the second air inlet pipe 241 penetrates the outer cylinder 24 and the module box 1 respectively, so that all the insides of the outer cylinder 24 are connected, and one end of the second air inlet pipe 241 is connected to the circulating gas collection place of the cooling module of the reflow soldering furnace; specifically, the flux vapor flows from the collection chamber 22 to the inside of the inner cylinder 25 through the first air inlet pipe 23 through the air inlet groove 211, and the inner cylinder 25 gradually shrinks the vapor to contact the inner cylinder 25. The inner side of the inner tube 25 is cooled and condensed into liquid, and the flux liquid flows from the side of the inner tube 25 into the collecting chamber 22 for collection. The cold air at the synchronous cooling module flows from the second air inlet pipe 241 into the outer tube 24. With the flow of subsequent components, the heat on the side of the inner tube 25 can be taken away through the heat conduction plate 26, thereby improving the cooling of the steam. At a later stage, the collecting plate 21 can be pulled out of the module box 1 by pulling the movable plate 11. When installing, the first air inlet pipe 23 can be inserted into the air inlet groove 211 to position and constrain the collecting plate 21.

[0038] The residual heat of the flux vapor can be reused by the provided flow guiding mechanism 3, and can be used in multiple states;

[0039] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown in the figure, the diversion mechanism 3 includes an installation box 31 fixedly installed on the inner top side of the module box 1, and the installation box 31 is fixedly connected to the upper sides of the inner cylinder 25 and the outer cylinder 24. The installation box 31 is a rectangular box. An inner cavity 32 is opened on the lower side of the installation box 31, and the inner cavity 32 corresponds to the positions of the outer cylinder 24 and the inner cylinder 25. The inner cavity 32 is a cylindrical cavity with a convex cross-section. An adjusting cylinder 33 is movably installed inside the inner cavity 32, and the side surface of the adjusting cylinder 33 maintains a certain distance from the wall surface of the inner cavity 32. The adjusting cylinder 33 is a cylindrical tube with an "F"-shaped cross-section. On the side surface of the adjusting cylinder 33, a first guiding groove 34 penetrating through it and the outer cylinder 24 is mirror-symmetrically opened corresponding to the position of the first protrusion of the inner cavity 32. The first guiding groove 34 is an "L"-shaped circular groove. On the side surface of the adjusting cylinder 33, a second guiding groove 35 penetrating through it is mirror-symmetrically opened corresponding to the position of the second protrusion of the inner cavity 32, and the second guiding groove 35 corresponds to the position of the inner cylinder 25. The second guiding groove 35 is an "L"-shaped circular groove. An opening groove 36 is opened inside the adjusting cylinder 33, and the opening groove 36 is a rectangular groove. A clamping block 361 is movably installed inside the opening groove 36. The clamping block 361 is a rectangular block made of wear-resistant material with an arc-shaped side. First electric push rods 362 are symmetrically and fixedly arranged between the side surface of the clamping block 361 and the wall surface of the opening groove 36. A first exhaust pipe 37 and a second exhaust pipe 38 are alternately arranged on the side surface of the installation box 31, and the ports of the first exhaust pipe 37 and the second exhaust pipe 38 respectively penetrate through the installation box 31 to the two protrusions of the inner cavity 32 and correspond to the air outlet positions of the first exhaust pipe 37 and the first guiding groove 34. The air outlet ports of the first exhaust pipe 37 and the second exhaust pipe 38 are finally connected in parallel to the furnace. The first exhaust pipe 37 and the second exhaust pipe 38 are multi-branch circular pipes; specifically, by pushing the clamping block 361 through the opening groove 36 to cooperate with the later components, the adjusting cylinder 33 can be driven to rotate inside the inner cavity 32. In the default state, the first exhaust pipe 37 is communicated with the inside of the outer cylinder 24. The flux vapor is condensed and collected from the inside of the inner cylinder 25, then flows through the inside of the second guiding groove 35 and is discharged from the second exhaust pipe 38. The cold air passes through the inside of the outer cylinder 24 to take away the heat on the side surface of the temperature guiding plate 26, and then passes through the first guiding groove 34 and is discharged from the first exhaust pipe 37. Finally, the heat flow that takes away the heat and the recovered vapor converge to form a warm gas flow back to the furnace, making full use of the heat of the gas;

[0040] The collection mechanism 4 provided can trigger each component, and can collect the flux in multiple states, which also facilitates the subsequent removal of the flux;

[0041] Such as Figure 2 、 Figure 3 and Figures 6 to 8As shown in the figure, the collection mechanism 4 includes a linkage rod 41 disposed inside the inner cylinder 25, and the linkage rod 41 extends through the adjustment cylinder 33 and the installation box 31 and penetrates the module box 1. The linkage rod 41 is a "T"-shaped round rod. A constraint groove 411 is formed in the side surface of the linkage rod 41 corresponding to the upper position of the module box 1. The constraint groove 411 is a spline groove. A first gear 42 is movably sleeved on the side surface of the linkage rod 41, and the first gear 42 is meshed and installed inside the constraint groove 411. The first gear 42 is an annular gear with an inner spline shape. A synchronous belt 422 is meshed and sleeved on the side surface of the first gear 42. The synchronous belt 422 is an "O"-shaped belt with teeth on the inner side. A second gear 421 is disposed on the upper side of the module box 1, and the second gear 421 is disposed inside the synchronous belt 422 and meshed with it. The synchronous belt 422 is a circular gear. A motor 423 is fixedly installed on the upper side of the synchronous belt 422, and the motor 423 is fixed on the upper side of the module box 1 through a support frame. A second electric push rod 43 is disposed on the upper side of the linkage rod 41, and the second electric push rod 43 is fixed on the upper side of the module box 1 through a support frame. A mating cavity 431 is formed at the output end of the second electric push rod 43, and the linkage rod 41 is rotatably installed inside the mating cavity 431. The mating cavity 431 is a cylindrical groove with a cross-section in the shape of the Chinese character "tu". A connecting air pipe 44 is fixedly disposed on the wall surface of the mating cavity 431, and the connecting air pipe 44 penetrates the mating cavity 431. The other end of the connecting air pipe 44 is fixedly connected to the parallel connection of the first exhaust pipe 37 and the second exhaust pipe 38 and is equipped with an electric control valve (a general three-way valve can be used). By default, the electric control valve makes the connecting air pipe 44 in a non-connected state, and the warm gas from the first exhaust pipe 37 and the second exhaust pipe 38 flows into the furnace; specifically, by driving the second gear 421 to mesh with the synchronous belt 422 by the motor 423 to make it rotate, the synchronous belt 422 can drive all the first gears 42 to rotate synchronously with it, and the first gear 42 can drive the linkage rod 41 to perform an overall rotational movement. By pushing with the provided second electric push rod 43, the linkage rod 41 can be driven to move up and down inside the inner cylinder 25. The rotation of the linkage rod 41 inside the mating cavity 431 is restricted. In this way, all the linkage rods 41 can be driven to rotate by a group of motors 423, reducing the energy consumption during the use of the device;

[0042] On the inner side of the inner cylinder 25, scraping plates 45 are equidistantly attached. The scraping plates 45 are folding plates. On both sides of the scraping plates 45, a first connecting rod 451 and a second connecting rod 452 are respectively and fixedly installed and are also fixedly connected to the side position of the linkage rod 41. The scraping plates 45, the first connecting rod 451, and the second connecting rod 452 are all heat-conducting materials. A diversion cavity 453 is formed inside the scraping plates 45. The diversion cavity 453 is a folding groove. Through holes 454 penetrating the scraping plates 45 are equidistantly formed on both walls of the diversion cavity 453. The through holes 454 are circular holes. A connection groove 46 is formed on the upper side of the linkage rod 41 and the connection groove 46 respectively penetrates the first connecting rod 451 and the second connecting rod 452 to the inside of the diversion cavity 453. The connection groove 46 is a multi-branched cylindrical groove; specifically, by default, when the linkage rod 41 rotates, the scraping plates 45 will rotate accordingly to scrape and clean the inner side of the inner cylinder 25; when the second electric push rod 43 pushes the scraping plates 45 to move downward, the scraping plates 45 will separate from the inner side of the inner cylinder 25 to the wall surface of the collection cavity 22, and the first connecting rod 451 will contact the bottom wall of the collection cavity 22. At this time, when the linkage rod 41 rotates, the scraping plates 45 and the first connecting rod 451 can scrape the wall surface of the collection cavity 22 to break the caked flux collected inside, so that the flux can be easily poured out when the subsequent collection plate 21 is drawn out; through the above-mentioned electric control valve to connect the connecting air pipe 44, the warm gas flowing back from the first exhaust pipe 37 and the second exhaust pipe 38 can flow back into the connection groove 46, be discharged from the connection groove 46 to the inside of the diversion cavity 453 and discharged from the through holes 454, so as to recycle the warm gas in a cycle, ensure the maximum recovery of the flux, or the warm gas heats the scraping plates 45, the first connecting rod 451, and the second connecting rod 452, so that the flux accumulated on their sides melts and flows into the collection cavity 22. In addition, the heated outer cylinder 24, inner cylinder 25, and module box 1 can also more conveniently scrape the flux on the wall surface of the collection cavity 22.

[0043] Working principle:

[0044] During normal recovery: When the reflow soldering furnace is in use, the flux at the heating module is heated into a steam state. The steam is collected and discharged from the first intake pipe 23 through the intake groove 211 to the inside of each collection cavity 22. Then, it is gradually contracted by the inner cylinder 25 and cooled and condensed into a liquid on its side and flows into the bottom of the collection cavity 22 for collection. Subsequently, the condensed steam passes through the second guiding groove 35 and is discharged from the second exhaust pipe 38;

[0045] Meanwhile, the cold air from the cold air module is collected and discharged into the inner positions of the outer cylinders 24 through the second intake pipe 241. The cold air takes away the heat from the side of the heat conduction plate 26, absorbs the temperature inside the inner cylinder 25 through the heat conduction plate 26 for cooling, and ensures the condensation effect of the steam on its side. Subsequently, the cold air that has taken away the heat passes through the first guiding groove 34 and is discharged through the first exhaust pipe 37. The cold air and the steam are connected in parallel through the first exhaust pipe 37 and the second exhaust pipe 38 and then converge to form warm gas, which is discharged back into the furnace. In this way, the temperature of the recycled gas is effectively maintained, reducing the energy consumption of reheating;

[0046] Synchronously, at this time, the second electric push rod 43 pulls the linkage rod 41 so that the scraper 45 fits against the inner side of the inner cylinder 25. The motor 423 drives the second gear 421 to rotate and engage with the timing belt 422, driving the linkage rod 41 to rotate. The linkage rod 41 drives the scraper 45 to rotate on the side of the inner cylinder 25, scraping the condensed flux and quickly dropping it to the bottom of the collection chamber 22 for collection;

[0047] When the recovery rate is low: When the sensor externally detects that the flux content in the warm gas is still high, the connecting air pipe 44 is connected to the convergence of the first exhaust pipe 37 and the second exhaust pipe 38 through the electric control valve. The warm gas generated by the convergence is discharged into the cooperation chamber 431 through the connecting air pipe 44, and then flows into the diversion chamber 453 through the connecting groove 46 and is discharged through the exhaust holes 454. At this time, the warm gas contacts the inner side of the inner cylinder 25 again to condense the residual flux. At the same time, the warm gas heats the first connecting rod 451, the second connecting rod 452, and the scraper 45, making the scraper 45 slightly heated, which can better scrape the flux on the side of the inner cylinder 25 until the flux content in the warm gas reaches the standard, and then returns to the normal state;

[0048] After the recovery is completed: At this time, the first electric push rod 362 pushes the block 361 to fit against the side of the linkage rod 41. When the linkage rod 41 rotates, it will drive the adjustment cylinder 33 to rotate a certain position inside the inner cavity 32. Subsequently, the first electric push rod 362 pulls the block 361 away from the side of the linkage rod 41. The position of the first guiding groove 34 intersects with the outer cylinder 24. At this time, the inside of the outer cylinder 24 is not connected to the first guiding groove 34, and the cold air accumulates inside the outer cylinder 24 after absorbing the heat of the heat conduction plate 26, making the side of the inner cylinder 25 no longer refrigerated, resulting in a heat preservation effect. Similarly, at this time, only the uncondensed steam exists at the convergence of the first exhaust pipe 37 and the second exhaust pipe 38. The connecting air pipe 44 is connected through the electric control valve, and the steam returns to the inside of the inner cylinder 25 again through the connecting groove 46, heating the first connecting rod 451, the second connecting rod 452, and the side of the diversion chamber 453. At this time, the scraper 45 fits against the inner side of the inner cylinder 25 and rotates to scrape the residual flux and melt it, flowing into the bottom of the collection chamber 22;

[0049] Subsequently, the second electric push rod 43 pushes the linkage rod 41 to move downward, so that the scraper 45 is separated from the inner side of the inner cylinder 25 until the first connecting rod 451 reaches the bottom position of the collection cavity 22. The heated scraper 45 and the first connecting rod 451 rotate driven by the linkage rod 41 on the side of the collection cavity 22, scraping and crushing the flux on the side of the collection cavity 22, avoiding the flux from sticking to the side and bottom of the collection cavity 22 after cooling. Subsequently, the connecting air pipe 44 pulls the linkage rod 41 to reset and fit on the side of the inner cylinder 25, and keeps running in this state for a certain period of time, so that the flux melted by heating flows into the bottom of the collection cavity 22 on the sides of the first connecting rod 451, the second connecting rod 452 and the scraper 45. After completion, the collection plate 21 is pulled out through the movable plate 11, and then the flux inside the collection cavity 22 can be taken out by tools for subsequent recycling.

[0050] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art.

Claims

1. An air-cooled flux collection device for a reflow soldering furnace, comprising a module box (1), a movable plate (11) is clamped on the side of the module box (1), a condensation mechanism (2) is arranged inside the module box (1), a diversion mechanism (3) is arranged on the side of the condensation mechanism (2), and a collection mechanism (4) is arranged inside the condensation mechanism (2); It is characterized in that: The condensation mechanism (2) includes a collection plate (21), a collection cavity (22) is formed on the side of the collection plate (21), inner cylinders (25) are arranged at equal intervals inside the module box (1) corresponding to the position of the collection cavity (22), temperature guiding plates (26) are fixedly installed at equal intervals on the side of the inner cylinders (25), and outer cylinders (24) are fixedly installed on the side of the inner cylinders (25); The diversion mechanism (3) includes an installation box (31), an inner cavity (32) is formed on the lower side of the installation box (31), an adjusting cylinder (33) is movably installed inside the inner cavity (32), a first guiding groove (34) and a second guiding groove (35) are formed on the side of the adjusting cylinder (33), a clamping block (361) and a first electric push rod (362) are arranged inside the adjusting cylinder (33), and a first exhaust pipe (37) and a second exhaust pipe (38) are arranged alternately on the side of the installation box (31); The collection mechanism (4) includes a linkage rod (41), a first gear (42), a second gear (421) and a motor (423) are arranged on the side of the linkage rod (41), a second electric push rod (43) is arranged on the upper side of the linkage rod (41), and a scraping plate (45), a first connecting rod (451) and a second connecting rod (452) are arranged on the side of the linkage rod (41) corresponding to the inner side of the inner cylinder (25).

2. The air-cooled flux collection device for a reflow soldering furnace according to claim 1, wherein: The collection plate (21) is movably arranged inside the module box (1) and is fixedly installed at the side position of the movable plate (11), an air inlet groove (211) is formed on the side of the collection plate (21) and penetrates through it to the inside of all the collection cavities (22), and a first air inlet pipe (23) is fixedly installed through the side of the module box (1) and is clamped inside the air inlet groove (211).

3. The air-cooled flux collection device for a reflow soldering furnace according to claim 2, characterized in that: The inner cylinder (25) is attached to the side of the collection plate (21), the outer cylinder (24) covers the temperature guiding plate (26), second air inlet pipes (241) are fixedly installed through the side of the outer cylinder (24) at equal intervals and the second air inlet pipes (241) penetrate through the outer cylinder (24) and the module box (1) respectively to connect the inside of all the outer cylinders (24).

4. The air-cooled flux collection device for a reflow soldering furnace according to claim 3, characterized in that: The installation box (31) is fixedly installed on the top side inside the module box (1) and is fixedly connected to the upper side positions of the inner cylinder (25) and the outer cylinder (24), the inner cavity (32) corresponds to the positions of the outer cylinder (24) and the inner cylinder (25), the side of the adjusting cylinder (33) keeps a distance from the wall surface of the inner cavity (32), the first guiding groove (34) is formed on the side of the adjusting cylinder (33) corresponding to the first protrusion position of the inner cavity (32), and the second guiding groove (35) is formed on the side of the adjusting cylinder (33) corresponding to the second protrusion position of the inner cavity (32).

5. The air-cooled flux collection device for a reflow soldering furnace according to claim 4, characterized in that: A slot (36) is formed inside the adjusting cylinder (33), a clamping block (361) is movably installed inside the slot (36), a first electric push rod (362) is fixedly arranged between the side surface of the clamping block (361) and the wall surface of the slot (36), and the ports of the first exhaust pipe (37) and the second exhaust pipe (38) respectively penetrate through the mounting box (31) to two protruding parts of the inner cavity (32) and correspond to the air outlet positions of the first exhaust pipe (37) and the first guiding groove (34).

6. The air-cooled flux collection device for a reflow soldering furnace according to claim 5, characterized in that: The linkage rod (41) is arranged inside the inner cylinder (25). A constraint groove (411) is formed on the side surface of the linkage rod (41). A first gear (42) is movably sleeved on the side surface of the linkage rod (41) and is meshed and installed inside the constraint groove (411). A synchronous belt (422) is meshed and sleeved on the side surface of the first gear (42). A second gear (421) is arranged on the upper side of the module box (1) and is arranged inside the synchronous belt (422) and meshed with it. A motor (423) is fixedly installed on the upper side of the synchronous belt (422).

7. The air-cooled flux collection device for a reflow soldering furnace according to claim 6, characterized in that: A mating cavity (431) is formed at the output end of the second electric push rod (43), and the linkage rod (41) is rotatably installed inside the mating cavity (431). A connecting air pipe (44) is fixedly arranged on the wall surface of the mating cavity (431) and the connecting air pipe (44) penetrates through the mating cavity (431).

8. The air-cooled flux collecting device for a reflow soldering furnace according to claim 7, wherein: The scraping plate (45) is attached to the inner side of the inner cylinder (25). First connecting rods (451) and second connecting rods (452) are fixedly installed on both sides of the scraping plate (45) and are also fixedly connected to the side surface of the linkage rod (41). A flow guiding cavity (453) is formed inside the scraping plate (45). Exhaust holes (454) are equidistantly formed on the two walls of the flow guiding cavity (453). A connecting groove (46) is formed on the upper side of the linkage rod (41) and penetrates through the first connecting rod (451) and the second connecting rod (452) respectively to the inside of the flow guiding cavity (453).

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