SMT welding system

Abstract

The utility model provides an SMT welding system which comprises a welding assembly, cooling assemblies are arranged inside and behind the welding assembly, and each cooling assembly comprises a box body, a support, a water tank, a heat exchange pipe, a semiconductor refrigerator, an air inlet pipe, a cold air pipe, a draught fan and a second splitter plate. A support is fixedly connected to the bottom of the box body, a water tank is fixedly connected to the interior of the box body, and heat exchange pipes are evenly and fixedly connected to the interior of the water tank. The splitter plates are arranged above and below the PCB at the same time, so that the two faces of the PCB are cooled at the same time, the overall cooling speed of the PCB is increased, the PCB is rapidly cooled, meanwhile, the water temperature in the water tank is reduced through the semiconductor cooler, air entering the cold air pipe is cooled through the heat exchange pipe, and therefore the overall temperature of the cooling section is reduced, and the service life of the PCB is prolonged. The cooling efficiency of the cooling section is improved, the storage time of the PCBs in the cooling section is shortened, the conveying speed of the conveying belt is increased, and then the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a welding system, in particular to an SMT welding system, and belongs to the technical field of SMT production lines. Background Art

[0002] SMT production line, or surface mount technology production line, is a new generation of electronic assembly technology developed from hybrid integrated circuit technology. It is characterized by the use of component surface mounting technology and reflow soldering technology, and has become a new generation of assembly technology in electronic product manufacturing. The main equipment of the SMT production line includes printers, mounters, reflow soldering, plug-ins, wave crest furnaces and test packaging. The widespread application of SMT has promoted the miniaturization and multifunctionality of electronic products, and provided conditions for mass production and low defect rate production. At the same time, the application of SMT production lines has also promoted the development of related industries, such as materials equipment services and other related industries.

[0003] The welding system is an important part of the SMT production line. It is used to melt the solder paste and fix the components and PCB boards together. In the working process of the existing welding system, the cooling speed of the PCB board is slow after welding. Therefore, the PCB board needs to be stored in the cooling section of the welding system for a long time, which affects the overall conveying speed of the conveyor belt and reduces the welding efficiency. Therefore, an SMT welding system is proposed. Utility Model Content

[0004] In view of this, the utility model provides an SMT welding system to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0005] The technical solution of the embodiment of the utility model is implemented as follows: an SMT welding system includes a welding assembly, a cooling assembly is arranged inside and behind the welding assembly, and the cooling assembly includes a box body, a bracket, a water tank, a heat exchange tube, a semiconductor refrigerator, an air intake pipe, a cold air pipe, a fan and a second manifold;

[0006] A bracket is fixedly connected to the bottom of the box body, a water tank is fixedly connected to the interior of the box body, heat exchange tubes are evenly fixedly connected to the interior of the water tank, both ends of the heat exchange tubes pass through both sides of the water tank, a semiconductor refrigerator is installed on the water tank, one side of the box body is connected to an air inlet pipe, a side of the box body away from the air inlet pipe is connected to a cold air pipe, a fan is installed on the cold air pipe, and one end of the cold air pipe is connected to a second diverter plate.

[0007] Further preferably: the welding assembly includes a shell, a support leg, a hot air pipe, a first diverter plate and an exhaust port;

[0008] The bottom of the shell is evenly and fixedly connected with supporting legs.

[0009] Further preferably, the top and bottom of the shell are connected with a hot air pipe, and one end of the hot air pipe is connected with a first diverter plate.

[0010] Further preferably, an air outlet is provided on the inner side wall of the shell.

[0011] Further preferably: the inner side wall of the welding assembly is provided with a conveying assembly, and the conveying assembly includes a driving box, a motor, a driving roller, a supporting roller, a driving belt, a conveying belt and a pressure roller;

[0012] The front surface and the rear surface of the shell are symmetrically fixedly connected with a driving box.

[0013] Further preferably, a motor is mounted on the surface of the driving box, and an output shaft of the motor is fixedly connected to one end of the driving roller.

[0014] Further preferably, the inner side wall of the driving box is evenly rotatably connected with a roller, the outer side walls of the active roller and the roller are sleeved with a driving belt, and the outer side walls of the active roller and the roller are provided with a conveyor belt.

[0015] Further preferably, the inner side wall of the shell is evenly rotatably connected with a pressure roller, and the pressure roller is arranged above the conveyor belt.

[0016] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0017] The utility model simultaneously arranges the flow divider plates above and below the PCB board, so that both sides of the PCB board are cooled simultaneously, and the overall cooling speed of the PCB board is accelerated, so that the PCB board is cooled quickly, and at the same time, the water temperature in the water tank is lowered by the semiconductor refrigerator, and the air entering the cold air pipe is cooled by the heat exchange pipe, so as to reduce the overall temperature of the cooling section, speed up the cooling efficiency of the cooling section, reduce the storage time of the PCB board in the cooling section, increase the conveying speed of the conveyor belt, and further improve the welding efficiency.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is the internal structure diagram of the drive box of the utility model;

[0022] Figure 3 This is a diagram of the internal structure of the housing of the utility model;

[0023] Figure 4 This is a box structure diagram of the utility model;

[0024] Figure 5 This is a diagram of the internal structure of the box of the present utility model.

[0025] Figure numerals: 10, welding assembly; 11, shell; 12, support leg; 13, hot air duct; 14, first diverter plate; 15, exhaust port; 20, conveying assembly; 21, drive box; 22, motor; 23, active roller; 24, support roller; 25, drive belt; 26, conveyor belt; 27, pressure roller; 30, cooling assembly; 31, box; 32, bracket; 33, water tank; 34, heat exchange tube; 35, semiconductor refrigerator; 36, air inlet pipe; 37, cold air duct; 38, fan; 39, second diverter plate. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-5 As shown, the embodiment of the utility model provides an SMT welding system, including a welding assembly 10, a cooling assembly 30 is arranged inside and behind the welding assembly 10, and the cooling assembly 30 includes a box body 31, a bracket 32, a water tank 33, a heat exchange tube 34, a semiconductor refrigerator 35, an air intake pipe 36, a cold air pipe 37, a fan 38 and a second diverter plate 39;

[0029] A bracket 32 ​​is fixedly connected to the bottom of the box body 31, a water tank 33 is fixedly connected to the inside of the box body 31, a heat exchange tube 34 is evenly fixedly connected to the inside of the water tank 33, both ends of the heat exchange tube 34 pass through both sides of the water tank 33, a semiconductor refrigerator 35 is installed on the water tank 33, one side of the box body 31 is connected to an air inlet pipe 36, the side of the box body 31 away from the air inlet pipe 36 is connected to a cold air pipe 37, a fan 38 is installed on the cold air pipe 37, one end of the cold air pipe 37 is connected to a second diverter plate 39, the cooling side of the semiconductor refrigerator 35 is arranged inside the water tank 33, the heat dissipation side and the heat dissipation fan are arranged outside the box body 31, and the fan 38 is used to send external air into the cooling section to cool the PCB board.

[0030] In this embodiment, specifically: the welding assembly 10 includes a housing 11, a support leg 12, a hot air pipe 13, a first diverter plate 14 and an exhaust port 15;

[0031] The bottom of the shell 11 is evenly and fixedly connected with support legs 12, which play a role of stable support.

[0032] In this embodiment, specifically: the top and bottom of the shell 11 are connected with a hot air pipe 13, one end of the hot air pipe 13 is connected with a first diverter plate 14, and hot air is transported to the heating section of the welding system through the hot air pipe 13 to melt the solder paste and fix the components on the PCB board.

[0033] In this embodiment, specifically: an inner wall of the shell 11 is provided with an exhaust port 15, and the exhaust port 15 is used for exhausting air from the heating section and the cooling section of the welding system.

[0034] In this embodiment, specifically: the inner wall of the welding assembly 10 is provided with a conveying assembly 20, and the conveying assembly 20 includes a driving box 21, a motor 22, an active roller 23, an idler roller 24, a driving belt 25, a conveying belt 26 and a pressure roller 27;

[0035] The front surface and the rear surface of the housing 11 are symmetrically fixedly connected with a driving box 21 .

[0036] In this embodiment, specifically: a motor 22 is installed on the surface of the driving box 21 , and the output shaft of the motor 22 is fixedly connected to one end of the active roller 23 , and the active roller 23 is driven to rotate by the motor 22 .

[0037] In this embodiment, specifically: the inner wall of the driving box 21 is evenly rotated and connected to the roller 24, the outer wall of the active roller 23 and the roller 24 is provided with a driving belt 25, and the outer wall of the active roller 23 and the roller 24 is provided with a conveyor belt 26. Two adjacent active rollers 23 and rollers 24 are driven by the driving belt 25, and the conveyor belt 26 is driven by the active roller 23 to move, and the PCB board is transported by the conveyor belt 26 to complete the welding work.

[0038] In this embodiment, specifically: the inner wall of the housing 11 is evenly rotatably connected with a pressure roller 27, which is arranged above the conveyor belt 26. The pressure roller 27 is used to prevent the PCB board from jumping during the conveying process.

[0039] When the utility model is working: the motor 22 drives the active roller 23 to move, and the active roller 23 drives the conveyor belt 26 to move, so as to transport the PCB board. When passing through the heating section during transportation, the hot air pipe 13 sends hot air to melt the solder paste of the PCB board, and completes the welding of the PCB board and the components. After the welding is completed, the PCB board enters the cooling section, and the second diverter plate 39 is arranged above and below the PCB board, so that both sides of the PCB board are cooled at the same time, and the overall cooling speed of the PCB board is accelerated, so that it is cooled quickly. At the same time, the semiconductor refrigerator 35 is used to reduce the water temperature in the water tank 33, and the heat exchange pipe 34 is used to cool the air entering the cold air pipe 37, so as to reduce the overall temperature of the cooling section, accelerate the cooling efficiency of the cooling section, reduce the storage time of the PCB board in the cooling section, and increase the conveying speed of the conveyor belt 26, thereby improving the welding efficiency.

[0040] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A SMT soldering system, comprising a soldering assembly (10), characterized in that: A cooling assembly (30) is arranged inside and behind the welding assembly (10), and the cooling assembly (30) comprises a box body (31), a bracket (32), a water tank (33), a heat exchange pipe (34), a semiconductor refrigerator (35), an air intake pipe (36), a cold air pipe (37), a fan (38) and a second diverter plate (39); The bottom of the box body (31) is fixedly connected to a bracket (32), the interior of the box body (31) is fixedly connected to a water tank (33), the interior of the water tank (33) is evenly fixedly connected to a heat exchange tube (34), the two ends of the heat exchange tube (34) pass through the two sides of the water tank (33), a semiconductor refrigerator (35) is installed on the water tank (33), one side of the box body (31) is connected to an air intake pipe (36), the side of the box body (31) away from the air intake pipe (36) is connected to a cold air pipe (37), a fan (38) is installed on the cold air pipe (37), and one end of the cold air pipe (37) is connected to a second diverter plate (39).

2. A SMT welding system according to claim 1, characterized in that: The welding assembly (10) comprises a shell (11), a supporting leg (12), a hot air pipe (13), a first diverter plate (14) and an air outlet (15); The bottom of the shell (11) is evenly and fixedly connected with support legs (12).

3. A SMT welding system according to claim 2, characterized in that: The top and bottom of the shell (11) are connected to a hot air pipe (13), and one end of the hot air pipe (13) is connected to a first diverter plate (14).

4. The SMT welding system according to claim 3, characterized in that: An air outlet (15) is provided on the inner side wall of the housing (11).

5. The SMT welding system according to claim 4, characterized in that: The inner side wall of the welding assembly (10) is provided with a conveying assembly (20), and the conveying assembly (20) comprises a driving box (21), a motor (22), a driving roller (23), a supporting roller (24), a driving belt (25), a conveying belt (26) and a pressure roller (27); The front surface and the rear surface of the housing (11) are symmetrically fixedly connected with a driving box (21).

6. The SMT welding system according to claim 5, characterized in that: A motor (22) is installed on the surface of the driving box (21), and an output shaft of the motor (22) is fixedly connected to one end of the driving roller (23).

7. The SMT welding system according to claim 6, characterized in that: The inner side wall of the driving box (21) is evenly rotatably connected to a roller (24), the outer side walls of the active roller (23) and the roller (24) are sleeved with a driving belt (25), and the outer side walls of the active roller (23) and the roller (24) are provided with a conveyor belt (26).

8. The SMT welding system according to claim 7, characterized in that: The inner side wall of the shell (11) is evenly rotatably connected to a pressure roller (27), and the pressure roller (27) is arranged above the conveyor belt (26).

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