Welding device for electronic component

Abstract

The utility model relates to the technical field of reflow soldering machines, and discloses a soldering device for electronic components, which comprises a soldering machine body, the surface of the soldering machine body is fixedly connected with a shell, a flow guide cavity is arranged in the shell, and two ends of the flow guide cavity are fixedly connected with fans. An air outlet communicated with the flow guide cavity is formed in one side of the shell, a connecting pipe is fixedly connected to one side of the shell and corresponds to the air outlet in position, and a spray head is fixedly connected to one end of the connecting pipe; according to the utility model, the fan and the connecting pipe are arranged in the shell, the spray head is arranged on the connecting pipe, the fan, the connecting pipe and the spray head are matched with one another, and directional high-speed airflow generated by the fan is utilized, so that the temperature of a circuit board can be quickly reduced to a proper level in a short time, the cooling period is greatly shortened, and the operation risk of workers is reduced; and the output efficiency of the whole production line is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reflow soldering machines, in particular to a soldering device for electronic components. Background Art

[0002] The soldering device for electronic components is a device specially used to connect electronic components to circuit boards, etc. The general soldering devices for electronic components include soldering irons, hot air soldering stations, reflow soldering machines, wave soldering machines, etc. Among them, the reflow soldering machine is a key equipment used in the electronics manufacturing industry, especially in surface mount technology production lines. It is mainly used to connect surface mount components and solder paste on printed circuit boards by melting them at high temperature to form reliable electrical and mechanical connections.

[0003] The patent with the current publication number CN210877976U discloses a drawer-type reflow soldering machine, including a material bin, a heating module, a heat preservation and insulation module, a control module and a shell. A heating chamber is arranged in the shell. The material bin includes a material drawer and a material tray. The material tray is placed on the material drawer. There is a slide rail on each side of the material drawer. The slide rail is connected to the inner wall of the shell. An inner liner sealing plate is arranged between the slide rail and the heating chamber. A gap is reserved between the slide rail and the material drawer for the inner liner sealing plate to move. The telescopic guide rail of the utility model is separated from the material tray, which effectively prevents the guide rail from being roasted by high temperature. The controller controls the whole process in five sections: preheating, heating, welding, heat preservation and cooling. It can accurately control the welding effect and has multiple uses such as reflow, maintenance and drying. Super strong infrared heating enables the product to obtain high-efficiency and high-uniform heating. It adopts the dual heating method of infrared radiation + hot air circulation. The built-in circulation fan enables the internal hot air to circulate. The PC connection is convenient for detecting the temperature change in the furnace.

[0004] Although the above device solves the problem that the temperature of the heating chamber has a great influence on the slide rail, the following problems still exist:

[0005] After the existing reflow soldering machine completes soldering, the surface of the circuit board is still at a relatively high temperature. When the staff removes the circuit board, they will face the risk of burns. Since the existing reflow soldering machine cannot actively cool the circuit board, the staff usually need to wait for the circuit board to cool down by itself before they can remove the circuit board. This will lead to low production and soldering efficiency of electronic components, extend the production cycle, and affect the output efficiency of the overall production line. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a welding device for electronic components, which enables a circuit board to be cooled quickly.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding device for electronic components, comprising a welding machine body, a shell fixedly connected to the surface of the welding machine body, a guide cavity is provided in the shell, fans are fixedly connected to both ends of the guide cavity, an air outlet connected to the guide cavity is provided on one side of the shell, a connecting pipe is fixedly connected to one side of the shell, the connecting pipe corresponds to the position of the air outlet, and a nozzle is fixedly connected to one end of the connecting pipe.

[0008] Furthermore, an externally threaded tube is fixedly connected to one side of the outer shell, the externally threaded tube is connected to the air outlet, an internally threaded cap is threadedly connected to the outer wall of the externally threaded tube, the internally threaded cap is slidably connected to the connecting tube, a fixing groove is formed between the inner wall of the internally threaded cap and the externally threaded tube, and a fixing ring is fixedly connected to one end of the connecting tube, and the fixing ring matches the fixing groove in shape and position.

[0009] Furthermore, connecting grooves are provided on both sides of the shell, a fixing frame is slidably connected in the connecting groove, a dust screen is fixedly connected in the fixing frame, the dust screen matches the position of the fan, connecting bolts are rotatably connected at the four corners of the fixing frame, and threaded holes corresponding to the positions of the connecting bolts are provided at the four corners of the connecting groove.

[0010] Furthermore, a plurality of fixing plates are fixedly connected to the bottom of the outer wall of the shell, and fixing bolts are connected to the surface of the fixing plates. One end of the fixing bolts passes through the fixing plates and is threadedly connected to the surface of the welding machine body.

[0011] Furthermore, a bracket is fixedly connected to one side of the welding machine body, the cross section of the bracket is L-shaped, the horizontal plate of the bracket is fixedly connected to the welding machine body, and one end of the connecting pipe is located between the vertical plate of the bracket and the welding machine body.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model arranges a fan and a connecting pipe in the shell, and arranges a nozzle on the connecting pipe. By utilizing the cooperation among the fan, the connecting pipe and the nozzle, and utilizing the directional high-speed airflow generated by the fan, the temperature of the circuit board can be quickly reduced to an appropriate level in a short time, thus greatly shortening the cooling cycle, reducing the operating risks of the staff, and improving the output efficiency of the overall production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the housing, fan, connecting pipe and dustproof net of the utility model;

[0016] Figure 3 It is a three-dimensional cross-sectional structural diagram of the housing, fan and dustproof net of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the connecting rod, the nozzle and the bracket of the utility model;

[0018] Figure 5 for Figure 3 Schematic diagram of the enlarged three-dimensional cross-sectional structure at point A above.

[0019] In the figure: 1. welding machine body; 2. outer shell; 3. guide chamber; 4. fan; 5. air outlet; 6. connecting pipe; 7. nozzle; 8. external threaded pipe; 9. internal threaded cap; 10. fixing groove; 11. fixing ring; 12. connecting groove; 13. fixing bracket; 14. dustproof net; 15. connecting bolt; 16. threaded hole; 17. fixing plate; 18. fixing bolt; 19. bracket. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0021] like Figures 1 to 5 As shown, a welding device for electronic components includes a welding machine body 1, a shell 2 is fixedly connected to the surface of the welding machine body 1, a guide cavity 3 is opened in the shell 2, fans 4 are fixedly connected to both ends of the guide cavity 3, an air outlet 5 connected to the guide cavity 3 is opened on one side of the shell 2, a connecting pipe 6 is fixedly connected to one side of the shell 2, the connecting pipe 6 corresponds to the position of the air outlet 5, and a nozzle 7 is fixedly connected to one end of the connecting pipe 6.

[0022] like Figure 1 As shown, the electronic component welding device in the utility model is similar to the existing reflow soldering machine structure, such as a drawer-type reflow soldering machine disclosed in the patent publication number CN210877976U. The main improvement of the utility model is that the circuit board can be cooled quickly, such as Figures 1 to 5 As shown, when the welding device for electronic components in the utility model is used, after the welding of the welding machine body 1 is completed, the drawer of the welding machine body 1 is opened to move the circuit board out of the welding machine body 1, and then the fan 4 arranged inside the shell 2 is started, and when the fan 4 is working, a directional air flow is formed in the guide cavity 3. This air flow passes through the air outlet 5, and then is transmitted to the nozzle 7 through the connecting pipe 6. The nozzle 7 can concentrate and effectively spray the cooling airflow onto the surface of the circuit board that has just been welded, so as to achieve rapid cooling of the circuit board, thereby significantly shortening the cooling time of the circuit board and reducing the operating risk of the staff; the connecting pipe 6 is a retractable universal tube, so that the staff can flexibly adjust the position and angle of the nozzle 7 to ensure that the cooling airflow can be accurately aimed at the key parts of the circuit board after welding, and achieve a full range of efficient cooling effect.

[0023] By arranging a fan 4 and a connecting pipe 6 in the outer shell 2, and arranging a nozzle 7 on the connecting pipe 6, utilizing the mutual cooperation of the fan 4, the connecting pipe 6 and the nozzle 7, and utilizing the directional high-speed airflow generated by the fan 4, the temperature of the circuit board can be quickly reduced to an appropriate level in a short time, greatly shortening the cooling cycle, reducing the operating risks of the staff, and improving the output efficiency of the overall production line.

[0024] like Figure 2 , Figure 3 and Figure 5 As shown, an external threaded tube 8 is fixedly connected to one side of the outer shell 2, and the external threaded tube 8 is connected to the air outlet 5. An internal threaded cap 9 is threadedly connected to the outer wall of the external threaded tube 8. The internal threaded cap 9 is slidably connected to the connecting tube 6. A fixing groove 10 is formed between the inner wall of the internal threaded cap 9 and the external threaded tube 8. A fixing ring 11 is fixedly connected to one end of the connecting tube 6, and the fixing ring 11 matches the fixing groove 10 in shape and position.

[0025] Specifically, by utilizing the mutual cooperation between the externally threaded tube 8 and the internally threaded cap 9, the fixing ring 11 can be clamped in the fixing groove 10, thereby achieving a stable connection between the connecting tube 6 and the outer shell 2, and ensuring the sealing and stability of the cooling air flow channel; when the connecting tube 6 needs to be replaced, cleaned or stored, the staff can rotate the internally threaded cap 9 to separate the internally threaded cap 9 from the externally threaded tube 8, and then remove the connecting tube 6 and the nozzle 7, which brings convenience to the daily maintenance and management of the connecting tube 6 and the nozzle 7, and improves the flexibility and practicality of the connecting tube 6.

[0026] like Figures 1 to 3 As shown, connecting grooves 12 are provided on both sides of the shell 2, and a fixing frame 13 is slidably connected in the connecting groove 12. A dustproof net 14 is fixedly connected in the fixing frame 13, and the position of the dustproof net 14 matches the position of the fan 4. Connecting bolts 15 are rotatably connected at the four corners of the fixing frame 13, and threaded holes 16 corresponding to the positions of the connecting bolts 15 are provided at the four corners of the connecting groove 12.

[0027] Specifically, the dust, impurities and other tiny particles that try to enter the interior through the fan 4 are intercepted and filtered out to prevent these foreign objects from adhering to the blades of the fan 4 or entering the guide cavity 3, thereby avoiding the performance degradation, noise increase, or even damage of the fan 4, extending the service life of the fan 4, and ensuring the purity of the cooling airflow to avoid secondary pollution of the circuit board during the cooling process; using the connecting bolts 15, the staff can disassemble the fixing frame 13 and the dustproof net 14, so as to clean the dustproof net 14, so as to avoid the dustproof net 14 accumulating a lot of dust or other particles, which affects the working efficiency and heat dissipation effect of the fan 4.

[0028] like Figure 2 and Figure 3As shown, a plurality of fixing plates 17 are fixedly connected to the bottom of the outer wall of the housing 2, and fixing bolts 18 are connected to the surface of the fixing plates 17. One end of the fixing bolts 18 passes through the fixing plates 17 and is threadedly connected to the surface of the welding machine body 1.

[0029] Specifically, the fixing bolts 18 and the fixing plate 17 can stably connect the outer shell 2 to the welding machine body 1, ensuring the stability of the entire welding device during operation, and avoiding the separation or loosening of the outer shell 2 and the welding machine body 1 due to factors such as vibration and shaking. At the same time, this detachable threaded connection method also facilitates the installation, disassembly, maintenance and overhaul of the equipment, and improves the usability and maintenance convenience of the equipment.

[0030] like Figure 1 and Figure 4 As shown, a bracket 19 is fixedly connected to one side of the welding machine body 1, and the cross section of the bracket 19 is L-shaped. The horizontal plate of the bracket 19 is fixedly connected to the welding machine body 1, and one end of the connecting pipe 6 is located between the vertical plate of the bracket 19 and the welding machine body 1.

[0031] Specifically, the bracket 19 can provide support for the end of the connecting tube 6. When the staff needs to cool the circuit board after welding, they can pick up the connecting tube 6 and the nozzle 7 integrated therewith more quickly and conveniently, and directly aim at the target position for efficient cooling, which can significantly improve work efficiency and operational convenience.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A welding device for electronic components, comprising a welding machine body (1), characterized in that: The surface of the welding machine body (1) is fixedly connected to a shell (2), a flow guide cavity (3) is provided in the shell (2), both ends of the flow guide cavity (3) are fixedly connected to fans (4), one side of the shell (2) is provided with an air outlet (5) connected to the flow guide cavity (3), one side of the shell (2) is fixedly connected to a connecting pipe (6), the connecting pipe (6) corresponds to the position of the air outlet (5), and one end of the connecting pipe (6) is fixedly connected to a nozzle (7).

2. The electronic component welding device according to claim 1, characterized in that: An externally threaded tube (8) is fixedly connected to one side of the outer shell (2), the externally threaded tube (8) is connected to the air outlet (5), an internally threaded cap (9) is threadedly connected to the outer wall of the externally threaded tube (8), the internally threaded cap (9) is slidably connected to the connecting tube (6), a fixing groove (10) is formed between the inner wall of the internally threaded cap (9) and the externally threaded tube (8), and a fixing ring (11) is fixedly connected to one end of the connecting tube (6), the fixing ring (11) and the fixing groove (10) matching in shape and position.

3. An electronic component welding device according to claim 1 or 2, characterized in that: The shell (2) is provided with connection grooves (12) on both sides, a fixing frame (13) is slidably connected in the connection groove (12), a dust screen (14) is fixedly connected in the fixing frame (13), the dust screen (14) matches the position of the fan (4), the fixing frame (13) is rotatably connected with connection bolts (15) at the four corners, and threaded holes (16) corresponding to the positions of the connection bolts (15) are provided at the four corners of the connection groove (12).

4. An electronic component welding device according to claim 1 or 2, characterized in that: A plurality of fixing plates (17) are fixedly connected to the bottom of the outer wall of the housing (2); fixing bolts (18) are connected to the surface of the fixing plates (17); one end of the fixing bolts (18) passes through the fixing plates (17) and is threadedly connected to the surface of the welding machine body (1).

5. The electronic component welding device according to claim 3, characterized in that: A plurality of fixing plates (17) are fixedly connected to the bottom of the outer wall of the housing (2); fixing bolts (18) are connected to the surface of the fixing plates (17); one end of the fixing bolts (18) passes through the fixing plates (17) and is threadedly connected to the surface of the welding machine body (1).

6. An electronic component welding device according to claim 1, 2 or 5, characterized in that: A bracket (19) is fixedly connected to one side of the welding machine body (1); the bracket (19) has an L-shaped cross section; a horizontal plate of the bracket (19) is fixedly connected to the welding machine body (1); and one end of the connecting pipe (6) is located between the vertical plate of the bracket (19) and the welding machine body (1).

7. The electronic component welding device according to claim 3, characterized in that: A bracket (19) is fixedly connected to one side of the welding machine body (1); the bracket (19) has an L-shaped cross section; a horizontal plate of the bracket (19) is fixedly connected to the welding machine body (1); and one end of the connecting pipe (6) is located between the vertical plate of the bracket (19) and the welding machine body (1).

8. The electronic component welding device according to claim 4, characterized in that: A bracket (19) is fixedly connected to one side of the welding machine body (1); the bracket (19) has an L-shaped cross section; a horizontal plate of the bracket (19) is fixedly connected to the welding machine body (1); and one end of the connecting pipe (6) is located between the vertical plate of the bracket (19) and the welding machine body (1).

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