PCB processing reflow oven

Abstract

The utility model discloses a PCB (printed circuit board) processing reflow oven which structurally comprises a bottom supporting frame, a reflow oven and a movable frame, a PCB is placed on a placing plate at the upper end of the movable frame, then a motor drives a lead screw to drive the movable frame to move and enter the reflow oven through a threaded hole, and openings in the two sides of the reflow oven are closed, so that the situation that heat is dissipated outwards is avoided, and the reflow oven is convenient to use. Then the PCB is heated under the action of the heating piece in the heating cover, and the purpose of hot air backflow work can be achieved under the action of the first fan and the second fan, so that more heat is saved, the processing efficiency is higher, and the product quality is improved. Internal heat can be rapidly cooled through a second fan under the action of a first three-way pipe and a second three-way pipe, and internal air is filtered through a filter and then is input into the water tank through an air guide pipe to be filtered, so that harmful gas is treated, and the situation that the working environment is affected is avoided; and then the movable frame is moved out under the action of the motor, and rapid and safe material taking work can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of reflow furnaces, in particular to a PCB board processing reflow furnace. Background Art

[0002] The reflow furnace is a device that passes the PCB board after the components are placed through high temperature, melts the solder paste attached to the PCB board, and then cools it down, so that the components on the PCB can be stably combined.

[0003] When the current reflow furnace processes PCB boards, both the material and the square material need to be manually put into the reflow furnace to be taken out. This method is likely to cause residual high temperature inside, which poses a safety hazard to the staff. In addition, the current reflow furnace has a complex structure and high cost, which is inconvenient for companies to popularize.

[0004] Therefore, a PCB board processing reflow furnace with low structural cost and convenient material collection is proposed. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In order to overcome the shortcomings of the existing technology, a PCB board processing reflow furnace is proposed to solve the problem that when the current reflow furnace processes the PCB board, both the material and the square material need to be manually put into the reflow furnace to be taken out, which easily leads to the residual high temperature inside, causing safety hazards to the staff, and the current reflow furnace has a complex structure, high cost, and is not convenient for companies to popularize.

[0007] (II) Technical solution

[0008] The utility model is realized by the following technical scheme: The utility model proposes a PCB board processing reflow furnace, comprising

[0009] A U-shaped bottom support frame, wherein a lead screw is connected to the middle of the upper end of the bottom support frame through a bearing, a motor is installed on the outer side of the bottom support frame, and an output end of the motor is connected to the lead screw;

[0010] A reflow box, the reflow box is arranged on one side of the bottom support frame, the upper left and right sides of the reflow box are opened, the other two sides of the reflow box are provided with heating covers, and the inner wall of the heating cover is provided with a leak-hole-shaped heat-transmitting plate, the heating cover is provided with a heating element, and a control panel is installed on the outside of the reflow box;

[0011] The movable frame is arranged in a U shape, and a threaded hole is arranged at the lower end of the movable frame to be connected with a screw rod, a multi-layer placement plate is arranged inside the movable frame, a temperature sensor is installed on the inner wall of the movable frame, and a plurality of air holes are arranged at the bottom end of the movable frame.

[0012] Furthermore, positioning rods are connected to both sides of the upper end of the bottom support frame, and positioning holes are provided on both sides of the bottom of the movable frame and are slidably connected to the positioning rods.

[0013] Furthermore, the two side walls of the movable frame are arranged to fit the opening of the reflow box.

[0014] Furthermore, a first fan is installed at the top of the reflow box, and the air supply end of the first fan is connected to a first three-way pipe, one end of the first three-way pipe is connected to the heating hoods on both sides through the air supply pipe, a funnel-shaped air hood is provided at the lower end of the interior of the reflow box, and a second fan is installed at the lower end of the reflow box, and the air suction end of the second fan is connected to the lower end of the air hood, the air supply end of the second fan is connected to a second three-way pipe, and one end of the second three-way pipe is connected to the other side of the first three-way pipe through a connecting air pipe.

[0015] Furthermore, a filter is provided between the second fan and the air hood, and a filter layer is provided inside the filter.

[0016] Furthermore, a water tank is installed on the other side of the bottom support frame, and the other end of the second three-way pipe is connected to an air guide pipe that runs through the bottom of the water tank. An air hole is provided at the upper end of the water tank, and a water exchange port is provided at the bottom end of the water tank.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] In the utility model, a motor drives a screw rod to rotate, so that the movable rack moves left and right, and the movable rack moves into the reflow box, so that the PCB board on the movable rack enters the reflow box for processing, so that the PCB board can be quickly taken out, and the situation that manual taking out inside the reflow furnace is affected by the residual high temperature and causes safety hazards is avoided, and the purpose of speeding up the work efficiency is achieved. In addition, a multi-layer placement board is arranged inside the movable rack, so that most PCB boards can be processed, so that the work efficiency is higher and the operation is simpler.

[0020] In the utility model, the internal hot air is circulated and utilized through the first fan, the second fan, the first three-way pipe and the second three-way pipe, so that the heat utilization rate is higher, the energy consumption is avoided, and resources are saved.

[0021] In the utility model, a filter is arranged at the air suction end of the second fan to filter the gas sucked in after the heating work, and then input it into the water tank through the air guide pipe, and the filtered gas is filtered again, so as to avoid the harmful gas generated by the processing affecting the working environment and prevent gas pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0023] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0024] Figure 2 It is a side structural schematic diagram of the utility model;

[0025] Figure 3 It is a top view structural schematic diagram of the bottom support frame and the reflow box of the utility model;

[0026] Figure 4 It is a schematic diagram of the top view of the structure of the mobile frame of the utility model;

[0027] In the figure: bottom support frame -1, reflow box -2, mobile frame -3, threaded hole -4, screw -5, motor -6, placement plate -7, temperature sensor -8, first fan -9, first three-way pipe -10, heat-transmitting plate -11, filter -12, second fan -13, second three-way pipe -14, connecting air pipe -15, air guide pipe -16, water tank -17, control panel -18, heating cover -19, heating element -110, air supply pipe -111, positioning hole -112, positioning rod -113, air hole -114. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] See also Figure 1-Figure 4 The utility model provides a PCB board processing reflow furnace, including a U-shaped bottom support frame 1, a reflow box 2 and a movable frame 3, to form a reflow work of the PCB board, the bottom support frame 1 performs support work, the reflow box 2 performs reflow work on the PCB board, and the movable frame 3 facilitates the placement and removal of the PCB board.

[0030] A screw rod 5 is connected to the middle part of the upper end of the bottom support frame 1 through a bearing, a motor 6 is installed on the outer side of the bottom support frame 1, and the output end of the motor 6 is connected to the screw rod 5, and a threaded hole 4 is provided at the lower end of the mobile frame 3 to be connected to the screw rod 5, so that the screw rod 5 can be rotated under the drive of the motor 6 to drive the mobile frame 3 to move left and right, so as to realize the left and right removal of the PCB board, and realize the rapid removal of the PCB board, avoiding the situation where manual hands reach into the reflow furnace to take materials, and the residual high temperature causes safety hazards. Positioning rods 113 are connected to both sides of the upper end of the bottom support frame 1, and positioning holes 113 are provided on both sides of the bottom of the mobile frame 3 12 is slidably connected with the positioning rod 113 to enhance the stability of the mobile frame 3 so that the mobile frame 3 will not shake when moving. The mobile frame 3 is U-shaped for convenient heat processing on both sides. The mobile frame 3 is provided with a multi-layer placement plate 7 inside, and the placement plate 7 can be set in a filter plate shape to facilitate the discharge of gas. The multi-layer placement plate 7 is convenient for placing a large number of PCB boards for processing, which makes the work more efficient. The inner wall of the mobile frame 3 is installed with a temperature sensor 8 for convenient measurement of the temperature generated during processing. The bottom end of the mobile frame 3 is provided with a plurality of air holes 114 for convenient gas circulation.

[0031] The reflow box 2 is arranged on one side of the bottom support frame 1, and openings are arranged on the left and right sides of the upper part of the reflow box 2, and the two side walls of the movable frame 3 are arranged in close contact with the openings of the reflow box 2 to prevent the heat from escaping out during processing. A heating cover 19 is arranged on the other two sides of the reflow box 2, and a leak-hole-type heat-transmitting plate 11 is arranged on the inner wall of the heating cover 19. A heating element 110 is arranged inside the heating cover 19, so that the inside of the reflow box 2 is heated under the action of the heating element 110. A control panel 18 is installed on the outside of the reflow box 2 to facilitate the staff to operate and use the equipment.

[0032] Preferably, a first fan 9 is installed at the top of the reflow box 2, and the air supply end of the first fan 9 is connected to the first three-way pipe 10, and one end of the first three-way pipe 10 is connected to the heating covers 19 on both sides through the air supply pipe 111, so that the first fan 9 can input external air into the heating cover 19 so that the heat generated by the heating element 110 is input into the mobile frame 3 for processing, so that its heat can better cover the PCB board, and a funnel-shaped air cover is provided at the lower end of the reflow box 2 to facilitate the centralized downward processing of the gas, and a second fan 13 is installed at the lower end of the reflow box 2, and the air suction end of the second fan 13 is connected to the lower end of the air cover, and the air supply end of the second fan 13 is connected to the second three-way pipe 14, and the second three-way pipe 14 is connected to the second three-way pipe 14. One end of the tube 14 is connected to the other side of the first three-way tube 10 through the connecting air pipe 15, and heat is circulated and utilized under the action of the second fan 13 and the first fan 9, so that the thermal energy utilization rate is higher. A filter 12 is provided between the second fan 13 and the air hood, and a filter layer is provided inside the filter 12. A water tank 17 is installed on the other side of the bottom support frame 1. The other end of the second three-way tube 14 is connected to an air guide pipe 16 that runs through the bottom of the water tank 17, so as to process the exhaust gas generated during processing to avoid the exhaust gas discharge affecting the working environment, the ecological environment and physical health. An air hole is provided at the upper end of the water tank 17 for exhaust, and a water replacement port is provided at the bottom of the water tank 17 for replacing filtered water.

[0033] Working principle: When in use, first connect the motor 6, the temperature sensor 8, the first fan 9, the second fan 13, the control panel 18 and the heating element 110 to an external power source, then place the PCB on the placement plate 7, and then the motor 6 works to make the screw rod 5 rotate through the threaded hole 4 so that the mobile frame 3 moves under the action of the positioning hole 112 and the positioning rod 113, and after the mobile frame 3 closes the opening of the reflow box 2, the heating element 110 heats the PCB to process it, and under the action of the first fan 9, the air is input from one side of the first three-way pipe 10 through the air pipe 111 into the heating cover 19 to make the first fan 9 The heat energy is obtained to process the PCB board, and then the second fan 13 generates suction under the action of the second fan 13 so that the heat inside the reflow box 2 is input into the other end of the first three-way pipe 10 through the connecting air pipe 15, so that the heat energy is recycled, and when taking materials, the heating element 110 can be turned off for heating first, and then the second three-way pipe 14 connected to one end of the connecting air pipe 15 is closed, and then the second fan 13 filters the air inside the reflow box 2 through the filter 12 and then inputs it into the water tank 17 through the air guide pipe 16 for filtration and discharge, and replaces the internal air with the external air to quickly cool down, and then the motor 6 pushes the movable frame 3 out to complete the work.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A PCB board processing reflow furnace, characterized in that: include A U-shaped bottom support frame (1), wherein a screw rod (5) is connected to the middle of the upper end of the bottom support frame (1) via a bearing, a motor (6) is installed on the outer side of the bottom support frame (1), and an output end of the motor (6) is connected to the screw rod (5); A reflow box (2), the reflow box (2) being arranged on one side of the bottom support frame (1), the reflow box (2) being provided with openings on the left and right sides of the upper portion, the other two sides of the reflow box (2) being provided with heating covers (19), the inner wall of the heating cover (19) being provided with a leak-hole-shaped heat-transmitting plate (11), the interior of the heating cover (19) being provided with a heating element (110), and the outer side of the reflow box (2) being provided with a control panel (18); A movable frame (3), the movable frame (3) being arranged in a U-shape, and a threaded hole (4) being connected to a screw rod (5) being provided at the lower end of the movable frame (3), a multi-layer placement plate (7) being provided inside the movable frame (3), a temperature sensor (8) being installed on the inner wall of the movable frame (3), and a plurality of air holes (114) being provided at the bottom end of the movable frame (3).

2. A PCB board processing reflow furnace according to claim 1, characterized in that: Positioning rods (113) are connected to both sides of the upper end of the bottom support frame (1), and positioning holes (112) are provided on both sides of the bottom of the movable frame (3) and are slidably connected to the positioning rods (113).

3. A PCB board processing reflow furnace according to claim 1, characterized in that: The two side walls of the movable frame (3) are arranged to fit in with the opening of the reflow box (2).

4. A PCB board processing reflow furnace according to claim 1, characterized in that: A first fan (9) is installed at the top of the reflow box (2); a gas supply end of the first fan (9) is connected to a first three-way pipe (10); one end of the first three-way pipe (10) is connected to heating hoods (19) on both sides via a gas supply pipe (111); a funnel-shaped gas hood is provided at the lower end of the reflow box (2); a second fan (13) is installed at the lower end of the reflow box (2); an air suction end of the second fan (13) is connected to the lower end of the gas hood; a gas supply end of the second fan (13) is connected to a second three-way pipe (14); and one end of the second three-way pipe (14) is connected to the other side of the first three-way pipe (10) via a connecting gas pipe (15).

5. A PCB board processing reflow furnace according to claim 4, characterized in that: A filter (12) is provided between the second fan (13) and the air hood, and a filter layer is provided inside the filter (12).

6. A PCB board processing reflow furnace according to claim 4, characterized in that: A water tank (17) is installed on the other side of the bottom support frame (1); the other end of the second three-way pipe (14) is connected to an air guide pipe (16) that runs through the bottom of the water tank (17); an air hole is provided at the upper end of the water tank (17), and a water exchange port is provided at the bottom end of the water tank (17).

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