Reflow soldering machine with waste gas recovery device and use method of reflow soldering machine

Abstract

The invention discloses a reflow soldering machine with a waste gas recovery device and a using method thereof, and relates to the technical field of reflow soldering machines, the reflow soldering machine comprises a reflow soldering machine body, and a power transmission roller is rotatably mounted at the top end in one side of the reflow soldering machine body. The transmission motor is arranged to control rotation of the power transmission roller so as to control transmission operation of the transmission belt, a certain circuit board is placed on the transmission belt, the top end of the reflow soldering machine body is sealed through the sealing top cover, and the operation table is utilized to directly control direct starting of the preheater, the heater and the cooler. The surface of the circuit board is preheated through the preheater, the welding position of the circuit board is heated through the heater, and finally the welding position is cooled through the cooler, so that the whole reflow soldering process is achieved, and in the reflow soldering process, waste gas is absorbed through the gas suction pipe on the gas suction conveying pipe; and waste gas absorbed by the gas suction pipe is directly conveyed into the waste gas collection box.

Description

Technical Field

[0001] The present invention relates to the technical field of reflow welding machines, and in particular to a reflow welding machine with a waste gas recovery device and a use method thereof. Background Art

[0002] When the reflow oven is working, the flux in the solder paste will evaporate when heated. The evaporated flux is the main component of the waste gas of the reflow oven. The flux contains many chemical components that are harmful to the human body. Therefore, the waste gas of the reflow oven needs to be treated before it can be discharged into the air. During the transportation of the waste gas, the waste gas and the air outside the pipeline will produce heat exchange, causing the temperature of the waste gas to gradually decrease, and the partially vaporized flux in the waste gas will re-liquefy. The liquefied flux drips into the waste gas transmission pipeline, reducing the inner diameter of the pipeline, affecting the efficiency of the pipeline to transmit the waste gas, and this part of the flux cannot be recovered in time, causing waste. In the process of the solder paste being heated, waste gas will be generated. The waste gas components include sulfur dioxide, carbon monoxide, nitrogen monoxide, and hydrogen sulfide, etc., which will pollute the environment when discharged into the air. The existing reflow oven directly discharges the waste gas without corresponding treatment, which causes the pollutants in the waste gas to pollute the atmosphere. Therefore, we have a reflow oven with a waste gas recovery device. Summary of the invention

[0003] The object of the present invention is to provide a reflow machine with a waste gas recovery device and a method for using the same.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a reflow machine with an exhaust gas recovery device and a method for using the same, comprising a reflow machine body, a power transmission roller is rotatably installed at the top inner side of one side of the reflow machine body, a transmission motor is fixedly installed on the outer wall of the top end of the reflow machine body close to the power transmission roller, a transmission belt is connected to the surface of one side of the power transmission roller, a driven roller is rotatably connected to the top end of the reflow machine body away from the power transmission roller, a connecting shaft is rotatably connected to the top end of one side of the reflow machine body, a sealing top cover is fixedly connected to the top end of one side of the connecting shaft, a preheater is fixedly installed inside one side of the sealing top cover, a heater is fixedly installed on one side of the preheater, a cooler is fixedly installed on one side of the heater, an operating table is fixedly installed on the top end of one side of the reflow machine body, a data display is fixedly installed on the side of the reflow machine body close to the operating table, and a control power box is fixedly installed on the back side of one side of the data display.

[0005] Preferably, the connection relationship between the transmission motor and the power transmission roller is a driving connection, the connection relationship between the power transmission roller and the driven roller is a transmission connection, the preheater, the heater and the cooler are fixedly installed in parallel on the inner surface of the sealing top cover, the connection relationship between the preheater and the data display is an electric control connection, the connection relationship between the heater and the data display is an electric control connection, and the connection relationship between the cooler and the data display is an electric control connection.

[0006] Preferably, an air suction transmission pipe is fixedly installed inside the reflow soldering machine body, and waste gas collecting boxes are installed on the top outer walls of both sides of the reflow soldering machine body close to the air suction transmission pipe, the air suction transmission pipe is connected to the waste gas collecting box, the top surface of one side of the air suction transmission pipe is connected to the air suction pipe, and an air suction groove is opened on one side surface of the air suction pipe.

[0007] Preferably, the number of the air suction transmission tubes is several, and the several air suction transmission tubes are evenly spaced and distributed inside the reflow soldering machine body; the number of the air suction tubes is several, and the several air suction tubes are evenly spaced and distributed on the same side surface of the air suction transmission tubes.

[0008] Preferably, a connecting hole is provided on the top surface of one side of the exhaust gas collecting box, a negative pressure fan box is fixedly installed on the inner top of the exhaust gas collecting box, a negative pressure fan is arranged inside one side of the negative pressure fan box, external connecting grooves are provided on the top surfaces of both sides of the negative pressure fan box, the top of one side of the negative pressure fan box is connected to an air suction disk, a smoke filter is detachably installed on the inner bottom surface of the air suction disk, a fan power box is fixedly installed on the back side of one side of the exhaust gas collecting box, a power box controller is fixedly installed on the top of one side of the fan power box, a control display is fixedly installed on the front side of the power box controller, and a control setting disk is arranged on the front side of the power box controller.

[0009] Preferably, an activated carbon absorption box is fixedly installed on the bottom end of one side of the exhaust gas collecting box close to the negative pressure fan box, and an activated carbon gas absorption hole is opened on one side surface of the activated carbon absorption box. A waste gas absorption liquid filling cabin is provided at the inner bottom end of the exhaust gas collecting box, and an addition pipe is connected to the top of one side of the exhaust gas collecting box close to the exhaust gas absorption liquid filling cabin, and an addition control valve is provided at the top of one side of the addition pipe. A waste liquid discharge pipe is connected to the top of one side of the exhaust gas collecting box close to the addition pipe, and a discharge control valve is provided at the top of one side of the waste liquid discharge pipe.

[0010] Preferably, a sealing slide rail is fixedly installed on the top surface of one side of the exhaust gas collection box, a sealing installation groove is opened inside the sealing slide rail, a sealing sliding top cover is slidably installed inside the sealing installation groove, and a cover handle is fixedly connected to the top of one side of the sealing sliding top cover.

[0011] Preferably, the positions of the connecting holes and the air intake transmission pipe correspond one to one, the connecting relationship between the connecting holes and the air intake transmission pipe is connected, the connecting relationship between the connecting holes and the air intake disk is connected, the number of the activated carbon gas absorption holes is several, and the several activated carbon gas absorption holes are distributed on the top surface of one side of the activated carbon absorption box, the activated carbon gas absorption holes pass through the interior of the activated carbon absorption box, and the connection relationship between the fan power box and the negative pressure fan is a power transmission connection.

[0012] Preferably, the method comprises the following steps:

[0013] S1: Control the rotation of the power transmission roller through the transmission motor, use the power transmission roller to directly drive the transmission and rotation of the transmission belt, and place the circuit board that needs to be reflowed on the top surface of the transmission belt;

[0014] S2: The top of the reflow soldering machine body is sealed by a sealed top cover, and the preheater, heater and cooler inside the sealed top cover are directly controlled to be turned on through the operating table;

[0015] S3: preheating the circuit board through a preheater, heating the welding part of the circuit board through a heater, and cooling the welding part of the circuit board through a cooler;

[0016] S4: When the conveyor belt is conveying the circuit board, the exhaust gas absorption operation is realized through the exhaust slots at multiple positions on the exhaust transmission pipe, and the exhaust gas enters the exhaust gas collection boxes on both sides through the exhaust transmission pipe for collection and treatment;

[0017] S5: The negative pressure fan inside the exhaust gas collection box is turned on through the power control of the fan power box, and the negative pressure fan is used to achieve negative pressure operation inside the negative pressure fan box. The exhaust gas enters the inside of the suction disk through the connecting hole, and then passes through the smoke filter to filter the solid particles of the exhaust gas. The filtered gas enters the inside of the activated carbon absorption box through the activated carbon gas absorption hole, and the activated carbon inside the activated carbon absorption box absorbs the gas. Finally, the exhaust gas absorption liquid is filled in the exhaust gas absorption liquid inside the cabin to achieve the final absorption of harmful gases.

[0018] S6: Through the coordinated use of the addition pipe and the waste liquid discharge pipe, the waste liquid inside the waste gas absorption liquid filling chamber can be replaced to ensure the gas absorption efficiency. By sliding the sealing sliding top cover in the sealing installation groove to adjust the position, the smoke filter can be disassembled and cleaned to ensure the smoke filter's efficiency in filtering exhaust gas particles.

[0019] Compared with the related art, the reflow machine with waste gas recovery device and the use method thereof provided by the present invention have the following beneficial effects:

[0020] 1. The present invention provides a reflow machine with a waste gas recovery device and a method for using the same. A transmission motor is provided to control the rotation of a power transmission roller, thereby controlling the transmission operation of a transmission belt. A certain circuit board is placed on the transmission belt. The top of the reflow machine body is sealed by a sealing top cover. The preheater, heater and cooler are directly controlled by an operating table. The preheater is used to preheat the surface of the circuit board. The welding position of the circuit board is heated by the heater. Finally, the welding position is cooled by the cooler to realize the entire reflow process. During the reflow process, the exhaust gas is absorbed by the suction pipe on the suction transmission pipe. The exhaust gas absorbed by the suction pipe is directly transmitted to the inside of the exhaust gas collection box. Exhaust gas collection boxes are provided at the tops of both sides of the reflow machine body to improve the exhaust gas absorption efficiency.

[0021] 2. The present invention provides a rewelding machine with a waste gas recovery device and a method for using the same. Air blowing is achieved by arranging a negative pressure fan inside a negative pressure fan box, and an external connection is connected through an external connecting groove to generate negative pressure. The connecting hole and the air suction transmission pipe are connected one by one to transmit the waste gas to the inside of the air suction disk. The smoke filter is used to filter the waste gas, and the solid particles in the waste gas can be filtered. The filtered gas enters the inside of the activated carbon absorption box through the activated carbon gas absorption hole to achieve preliminary absorption, and then the absorption liquid in the waste gas absorption liquid filling cabin is used to perform the final harmful gas absorption operation again. The use of the addition tube and the waste liquid discharge tube facilitates the replacement of the waste liquid inside the waste gas absorption liquid filling cabin.

[0022] 3. The present invention provides a rewelding machine with an exhaust gas recovery device and a method for using the same. The opening degree of the negative pressure fan inside the negative pressure fan box can be controlled by setting a power box controller on the fan power box, and the opening time of the negative pressure fan can also be directly controlled. The sealing sliding top cover is movably installed on the top surface of the exhaust gas collection box, which can seal the exhaust gas collection box and facilitate subsequent disassembly operations. The smoke filter can be directly disassembled, the surface of the smoke filter can be cleaned, and it can be installed again, thereby improving the cleanliness of the exhaust gas filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall side plan view of the device of the present invention;

[0025] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0026] Figure 4It is a schematic diagram of the cross-sectional structure of the internal equipment of the exhaust gas collection box of the present invention;

[0027] Figure 5 It is a schematic diagram of the front and side view of the exhaust gas collection box of the present invention;

[0028] Figure 6 It is a schematic diagram of the overall side view structure of the exhaust gas collection box of the present invention;

[0029] Figure 7 It is a schematic diagram of the connection structure of the exhaust gas collecting box and the sealed sliding top cover of the present invention.

[0030] Numbers in the figure: 1. Reflow soldering machine body; 2. Power transmission roller; 3. Transmission motor; 4. Transmission belt; 5. Driven roller; 6. Connecting shaft; 7. Sealing top cover; 8. Preheater; 9. Heater; 10. Cooler; 11. Operation table; 12. Data display; 13. Control power box; 14. Suction transmission pipe; 15. Waste gas collection box; 16. Suction pipe; 17. Suction slot; 18. Connecting hole; 19. Negative pressure fan box; 20. Negative pressure fan; 21. External Connecting groove; 22. Air suction plate; 23. Smoke filter; 24. Fan power box; 25. Power box controller; 26. Control display; 27. Control setting plate; 28. Activated carbon absorption box; 29. ​​Activated carbon gas absorption hole; 30. Waste gas absorption liquid filling cabin; 31. Adding pipe; 32. Adding control valve; 33. Waste liquid discharge pipe; 34. Discharge control valve; 35. Sealed slide rail; 36. Sealed installation groove; 37. Sealed sliding top cover; 38. Cover handle. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] See also Figure 1-7The present invention provides a technical solution: a reflow machine with an exhaust gas recovery device and a method for using the same, comprising a reflow machine body 1, a power transmission roller 2 is rotatably installed at the top of one side of the reflow machine body 1, a transmission motor 3 is fixedly installed on the top outer wall of the side of the reflow machine body 1 close to the power transmission roller 2, a transmission belt 4 is connected to the surface of one side of the power transmission roller 2, a driven roller 5 is rotatably connected to the top of the side of the reflow machine body 1 away from the power transmission roller 2, a connecting shaft 6 is rotatably connected to the top edge of one side of the reflow machine body 1, a sealing top cover 7 is fixedly connected to the top of one side of the connecting shaft 6, a preheater 8 is fixedly installed inside one side of the sealing top cover 7, a heater 9 is fixedly installed on one side of the preheater 8, and a heater 9 is fixedly installed on one side of the heater 9. A cooler 10 is fixedly installed, an operating table 11 is fixedly installed on the top of one side of the reflow soldering machine body 1, a data display 12 is fixedly installed on the side of the reflow soldering machine body 1 close to the operating table 11, a control power box 13 is fixedly installed on the back of one side of the data display 12, the connection relationship between the transmission motor 3 and the power transmission roller 2 is a driving connection, the connection relationship between the power transmission roller 2 and the driven roller 5 is a transmission connection, the preheater 8, the heater 9 and the cooler 10 are fixedly installed in parallel on the inner surface of the sealing top cover 7, the connection relationship between the preheater 8 and the data display 12 is an electric control connection, the connection relationship between the heater 9 and the data display 12 is an electric control connection, and the connection relationship between the cooler 10 and the data display 12 is an electric control connection.

[0034] In the implementation scheme, a transmission motor 3 is provided to control the rotation of the power transmission roller 2, thereby controlling the transmission operation of the transmission belt 4, placing a certain circuit board on the transmission belt 4, and sealing the top cover 7 to seal the top of the reflow soldering machine body 1. The operating table 11 is used to directly control the preheater 8, the heater 9 and the cooler 10 to be directly opened, the preheater 8 is used to preheat the surface of the circuit board, the heater 9 is used to heat the welding position of the circuit board, and finally the cooler 10 is used to cool the welding position to realize the entire reflow process. During the reflow process, the exhaust gas is absorbed by the suction pipe 16 on the suction transmission pipe 14, and the exhaust gas absorbed by the suction pipe 16 is directly transmitted to the inside of the exhaust gas collection box 15. The exhaust gas collection box 15 is set at the top of both sides of the reflow soldering machine body 1 to improve the exhaust gas absorption efficiency.

[0035] Embodiment 2:

[0036] See also Figure 1-7As shown, on the basis of the first embodiment, the present invention provides a technical solution: an air suction transmission pipe 14 is fixedly installed inside the reflow soldering machine body 1, and waste gas collection boxes 15 are installed on the top outer walls of both sides of the reflow soldering machine body 1 close to the air suction transmission pipe 14, the air suction transmission pipe 14 is connected to the waste gas collection box 15, and the top surface of one side of the air suction transmission pipe 14 is connected to the air suction pipe 16, and the surface of one side of the air suction pipe 16 is provided with an air suction groove 17, and the number of the air suction transmission pipes 14 is several, and the number of the air suction transmission pipes 14 is several. 14 are evenly spaced inside the reflow soldering machine body 1, the number of the suction pipes 16 is a plurality, and the plurality of suction pipes 16 are evenly spaced and distributed on the same side surface of the suction transmission pipe 14, a connecting hole 18 is provided on the top surface of one side of the exhaust gas collection box 15, a negative pressure fan box 19 is fixedly installed on the top of the interior of the exhaust gas collection box 15, a negative pressure fan 20 is arranged inside one side of the negative pressure fan box 19, and external connecting grooves 21 are provided on the top surfaces of both sides of the negative pressure fan box 19, and a negative pressure fan 20 is provided on the top surface of one side of the negative pressure fan box 19. An air suction disk 22 is connected, and a smoke filter 23 is detachably installed on the inner bottom surface of the air suction disk 22; a fan power box 24 is fixedly installed on the back of one side of the exhaust gas collecting box 15; a power box controller 25 is fixedly installed on the top of one side of the fan power box 24; a control display 26 is fixedly installed on the front side of the power box controller 25; a control setting disk 27 is provided on the front side of the power box controller 25; an activated carbon absorption box 28 is fixedly installed on the bottom end of one side of the exhaust gas collecting box 15 close to the negative pressure fan box 19; an activated carbon gas absorption hole 29 is provided on one side surface of the activated carbon absorption box 28; an exhaust gas absorption liquid filling cabin 30 is provided at the inner bottom end of the exhaust gas collecting box 15; an addition pipe 31 is connected to the top of one side of the exhaust gas collecting box 15 close to the exhaust gas absorption liquid filling cabin 30; an addition control valve 32 is provided on the top of one side of the addition pipe 31; a waste liquid discharge pipe 33 is connected to the top of one side of the exhaust gas collecting box 15 close to the addition pipe 31; a discharge control valve 34 is provided on the top of one side of the waste liquid discharge pipe 33.

[0037] In the implementation case, blowing is achieved by setting a negative pressure fan 20 inside the negative pressure fan box 19, and the external connection is connected through the external connecting groove 21 to achieve the generation of negative pressure. The connecting hole 18 and the suction transmission pipe 14 are connected one by one to transmit the exhaust gas to the inside of the suction disk 22. The smoke filter 23 is used to filter the exhaust gas, and the solid particles in the exhaust gas can be filtered. The filtered gas enters the inside of the activated carbon absorption box 28 through the activated carbon gas absorption hole 29 to achieve preliminary absorption, and then passes through the absorption liquid inside the exhaust gas absorption liquid filling cabin 30 to perform the final harmful gas absorption operation again. By using the addition tube 31 and the waste liquid discharge pipe 33, the waste liquid inside the exhaust gas absorption liquid filling cabin 30 can be replaced conveniently.

[0038] Embodiment three:

[0039] See also Figure 1-7 As shown, on the basis of the first embodiment, the present invention provides a technical solution: a sealing slide rail 35 is fixedly installed on the top surface of one side of the exhaust gas collection box 15, a sealing installation groove 36 is opened inside the sealing slide rail 35, a sealing sliding top cover 37 is slidably installed inside the sealing installation groove 36, a cover handle 38 is fixedly connected to the top of one side of the sealing sliding top cover 37, the positions of the connecting hole 18 and the suction transmission pipe 14 correspond one to one, the connection relationship between the connecting hole 18 and the suction transmission pipe 14 is connected, the connection relationship between the connecting hole 18 and the suction disk 22 is connected, the number of activated carbon gas absorption holes 29 is several, and the several activated carbon gas absorption holes 29 are distributed on the top surface of one side of the activated carbon absorption box 28, and the activated carbon gas absorption holes 29 penetrate the inside of the activated carbon absorption box 28, and the connection relationship between the fan power box 24 and the negative pressure fan 20 is a power transmission connection;

[0040] The steps include:

[0041] S1: Control the rotation of the power transmission roller 2 through the transmission motor 3, and use the power transmission roller 2 to directly drive the transmission rotation operation of the transmission belt 4, and place the circuit board to be reflowed on the top surface of the transmission belt 4;

[0042] S2: The top of the reflow soldering machine body 1 is sealed by the sealing top cover 7, and the preheater 8, the heater 9 and the cooler 10 inside the sealing top cover 7 are directly controlled to be turned on by the operating table 11;

[0043] S3: preheating the circuit board by the preheater 8, heating the soldering part of the circuit board by the heater 9, and cooling the soldering part of the circuit board by the cooler 10;

[0044] S4: During the process of the conveyor belt 4 conveying the circuit board, the exhaust gas absorption operation is realized through the suction grooves 17 at multiple positions on the suction transmission pipe 14, and the exhaust gas enters the exhaust gas collection boxes 15 on both sides through the suction transmission pipe 14 for collection and treatment;

[0045] S5: The negative pressure fan 20 in the exhaust gas collection box 15 is turned on by the power control of the fan power box 24, and the negative pressure operation in the negative pressure fan box 19 is realized by the negative pressure fan 20. The exhaust gas enters the inside of the suction disk 22 through the connecting hole 18, and then passes through the smoke filter 23 to filter the solid particles of the exhaust gas. The filtered gas enters the inside of the activated carbon absorption box 28 through the activated carbon gas absorption hole 29, and the activated carbon in the activated carbon absorption box 28 absorbs the gas. Finally, the exhaust gas absorption liquid in the exhaust gas absorption liquid filling cabin 30 is used to realize the final absorption operation of harmful gases.

[0046] S6: Through the coordinated use of the addition pipe 31 and the waste liquid discharge pipe 33, the waste liquid inside the waste gas absorption liquid filling chamber 30 is replaced to ensure the gas absorption efficiency. By adjusting the sliding position of the sealing sliding top cover 37 inside the sealing installation groove 36, the smoke filter 23 can be disassembled and cleaned to ensure the efficiency of the smoke filter 23 in filtering exhaust gas particles.

[0047] In the implementation case, the opening degree of the negative pressure fan 20 inside the negative pressure fan box 19 is controlled by setting a power box controller 25 on the fan power box 24, and the opening time of the negative pressure fan 20 can also be directly controlled. The sealing sliding top cover 37 is movably installed on the top surface of the exhaust gas collection box 15, so that the sealing operation of the exhaust gas collection box 15 can be carried out, and the subsequent disassembly operation is convenient. The smoke filter 23 can be directly disassembled, and the surface of the smoke filter 23 can be cleaned and installed again, thereby improving the cleanliness of the exhaust gas filtration.

[0048] Working principle:

[0049] The transmission motor 3 is provided to control the rotation of the power transmission roller 2, thereby controlling the transmission operation of the transmission belt 4, placing a certain circuit board on the transmission belt 4, and sealing the top of the reflow soldering machine body 1 through the sealing top cover 7. The preheater 8, the heater 9 and the cooler 10 are directly controlled by the operating table 11. The preheater 8 is used to preheat the surface of the circuit board, the heater 9 is used to heat the welding position of the circuit board, and finally the cooler 10 is used to cool the welding position to realize the entire reflow process. During the reflow process, the exhaust gas is absorbed by the suction pipe 16 on the suction transmission pipe 14. The exhaust gas absorbed by the suction pipe 16 is directly transmitted to the inside of the exhaust gas collection box 15. The exhaust gas collection box 15 is set at the top of both sides of the reflow soldering machine body 1 to improve the exhaust gas absorption efficiency.

[0050] Blowing is achieved by setting a negative pressure fan 20 inside the negative pressure fan box 19, and the external connection is connected through the external connecting groove 21 to achieve the generation of negative pressure. The connecting hole 18 and the suction transmission pipe 14 are connected one by one, and the exhaust gas is transmitted to the inside of the suction disk 22. The smoke filter 23 is used to filter the exhaust gas, and the solid particles in the exhaust gas can be filtered. The filtered gas enters the inside of the activated carbon absorption box 28 through the activated carbon gas absorption hole 29 to achieve preliminary absorption, and then passes through the absorption liquid inside the exhaust gas absorption liquid filling cabin 30 to perform the final harmful gas absorption operation again. By using the addition tube 31 and the waste liquid discharge pipe 33, it is convenient to replace the waste liquid inside the exhaust gas absorption liquid filling cabin 30;

[0051] By setting a power box controller 25 on the fan power box 24, the opening degree of the negative pressure fan 20 inside the negative pressure fan box 19 can be controlled, and the opening time of the negative pressure fan 20 can also be directly controlled. By sealing the sliding top cover 37 and movably installing it on the top surface of the exhaust gas collection box 15, the sealing operation of the exhaust gas collection box 15 can be carried out, and the subsequent disassembly operation is convenient. The smoke filter 23 can be directly disassembled, and the surface of the smoke filter 23 can be cleaned and installed again, thereby improving the cleanliness of the exhaust gas filtration.

Claims

1. A reflow soldering machine with an exhaust gas recovery device, comprising a reflow soldering machine body (1), wherein a power transmission roller (2) is rotatably mounted on the top of one side of the reflow soldering machine body (1), characterized in that: A transmission motor (3) is fixedly mounted on the outer wall of the top end of the reflow soldering machine body (1) close to the power transmission roller (2); a transmission belt (4) is connected to the surface of one side of the power transmission roller (2); a driven roller (5) is rotatably connected to the top end of the reflow soldering machine body (1) away from the power transmission roller (2); a connecting shaft (6) is rotatably connected to the edge of the top end of one side of the reflow soldering machine body (1); a sealing top cover (7) is fixedly connected to the top end of one side of the connecting shaft (6); and the sealing A preheater (8) is fixedly installed inside one side of the top cover (7), a heater (9) is fixedly installed on one side of the preheater (8), a cooler (10) is fixedly installed on one side of the heater (9), an operating table (11) is fixedly installed on the top of one side of the reflow soldering machine body (1), a data display (12) is fixedly installed on one side of the reflow soldering machine body (1) close to the operating table (11), and a control power box (13) is fixedly installed on the back of one side of the data display (12).

2. The reflow machine with waste gas recovery device according to claim 1, characterized in that: The connection relationship between the transmission motor (3) and the power transmission roller (2) is a driving connection, the connection relationship between the power transmission roller (2) and the driven roller (5) is a transmission connection, the preheater (8), the heater (9) and the cooler (10) are fixedly installed in parallel on the inner surface of the sealing top cover (7), the connection relationship between the preheater (8) and the data display (12) is an electric control connection, the connection relationship between the heater (9) and the data display (12) is an electric control connection, and the connection relationship between the cooler (10) and the data display (12) is an electric control connection.

3. The reflow machine with waste gas recovery device according to claim 1, characterized in that: An air suction transmission pipe (14) is fixedly installed inside the reflow soldering machine body (1), and waste gas collection boxes (15) are installed on the outer walls of the top ends of both sides of the reflow soldering machine body (1) close to the air suction transmission pipe (14). The air suction transmission pipe (14) and the waste gas collection box (15) are connected, and the top end surface of one side of the air suction transmission pipe (14) is connected to an air suction pipe (16), and an air suction groove (17) is opened on the surface of one side of the air suction pipe (16).

4. The reflow machine with waste gas recovery device according to claim 3, characterized in that: The number of the air suction transmission pipes (14) is several, and the several air suction transmission pipes (14) are evenly spaced and distributed inside the reflow soldering machine body (1); the number of the air suction pipes (16) is several, and the several air suction pipes (16) are evenly spaced and distributed on the same side surface of the air suction transmission pipe (14).

5. The reflow machine with waste gas recovery device according to claim 3, characterized in that: A connecting hole (18) is provided on the top surface of one side of the waste gas collection box (15), a negative pressure fan box (19) is fixedly installed on the internal top of the waste gas collection box (15), a negative pressure fan (20) is arranged inside one side of the negative pressure fan box (19), external connecting grooves (21) are provided on the top surfaces of both sides of the negative pressure fan box (19), a suction plate (22) is connected to the top of one side of the negative pressure fan box (19), a smoke filter (23) is detachably installed on the internal bottom surface of the suction plate (22), a fan power box (24) is fixedly installed on the back of one side of the waste gas collection box (15), a power box controller (25) is fixedly installed on the top of one side of the fan power box (24), a control display (26) is fixedly installed on the front side of the power box controller (25), and a control setting plate (27) is arranged on the front side of the power box controller (25).

6. The reflow machine with waste gas recovery device according to claim 5, characterized in that: An activated carbon absorption box (28) is fixedly installed at the bottom end of one side of the waste gas collection box (15) close to the negative pressure fan box (19), and an activated carbon gas absorption hole (29) is opened on one side surface of the activated carbon absorption box (28). A waste gas absorption liquid filling cabin (30) is arranged at the inner bottom end of the waste gas collection box (15), and an addition pipe (31) is connected to the top end of one side of the waste gas collection box (15) close to the waste gas absorption liquid filling cabin (30), and an addition control valve (32) is arranged at the top end of one side of the addition pipe (31), and a waste liquid discharge pipe (33) is connected to the top end of one side of the waste gas collection box (15) close to the addition pipe (31), and a discharge control valve (34) is arranged at the top end of one side of the waste liquid discharge pipe (33).

7. The reflow machine with waste gas recovery device according to claim 3, characterized in that: A sealing slide rail (35) is fixedly mounted on the top surface of one side of the exhaust gas collection box (15), a sealing installation groove (36) is provided inside the sealing slide rail (35), a sealing sliding top cover (37) is slidably mounted inside the sealing installation groove (36), and a cover handle (38) is fixedly connected to the top of one side of the sealing sliding top cover (37).

8. The reflow machine with waste gas recovery device according to claim 6, characterized in that: The positions of the connecting hole (18) and the air intake transmission pipe (14) correspond one to one, the connecting hole (18) and the air intake transmission pipe (14) are connected, the connecting hole (18) and the air intake disk (22) are connected, the number of the activated carbon gas absorption holes (29) is several, and the several activated carbon gas absorption holes (29) are distributed on the top surface of one side of the activated carbon absorption box (28), and the activated carbon gas absorption holes (29) pass through the interior of the activated carbon absorption box (28), and the connection relationship between the fan power box (24) and the negative pressure fan (20) is a power transmission connection.

9. The reflow machine with waste gas recovery device according to claim 1, characterized in that: The steps include: S1: Control the rotation of the power transmission roller (2) through the transmission motor (3), and use the power transmission roller (2) to directly drive the transmission rotation operation of the transmission belt (4), and place the circuit board to be reflowed on the top surface of the transmission belt (4); S2: The top of the reflow soldering machine body (1) is sealed by a sealing top cover (7), and the preheater (8), the heater (9) and the cooler (10) inside the sealing top cover (7) are directly controlled to be turned on by an operating table (11); S3: preheating the circuit board by means of a preheater (8), heating the soldering portion of the circuit board by means of a heater (9), and cooling the soldering portion of the circuit board by means of a cooler (10); S4: During the process of the conveyor belt (4) conveying the circuit board, the exhaust gas absorption operation is realized through the exhaust grooves (17) at multiple positions on the exhaust gas transmission pipe (14), and the exhaust gas enters the exhaust gas collection boxes (15) on both sides through the exhaust gas transmission pipe (14) for collection and treatment; S5: The negative pressure fan (20) inside the waste gas collection box (15) is turned on by the power control of the fan power box (24), and the negative pressure operation inside the negative pressure fan box (19) is realized by the negative pressure fan (20). The waste gas enters the inside of the suction plate (22) through the connecting hole (18), and then passes through the smoke filter (23) to filter the solid particles of the waste gas. The filtered gas enters the inside of the activated carbon absorption box (28) through the activated carbon gas absorption hole (29), and the activated carbon inside the activated carbon absorption box (28) absorbs the gas. Finally, the waste gas absorption liquid inside the waste gas absorption liquid filling cabin (30) is used to realize the final absorption operation of harmful gas. S6: By using the addition pipe (31) and the waste liquid discharge pipe (33) in coordination, the waste liquid in the waste gas absorption liquid filling chamber (30) can be replaced to ensure gas absorption efficiency. By adjusting the sliding position of the sealing sliding top cover (37) in the sealing installation groove (36), the smoke filter (23) can be disassembled and cleaned to ensure the efficiency of the smoke filter (23) in filtering waste gas particles.

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