Heating device for BGA (Ball Grid Array) rework table

Abstract

The utility model relates to the technical field of integrated circuit boards, and discloses a BGA rework station heating device which comprises a workbench, an elastic block is fixedly embedded in the upper surface of the workbench, a fixing frame is arranged on the inner wall of the elastic block, a shell is fixedly arranged on the upper surface of the fixing frame, and a plurality of through holes are formed in the upper surface of the shell. Two rotating shafts are rotatably arranged on the inner wall of the shell, the outer walls of the two rotating shafts are each fixedly provided with a set of sector plates, one end of the outer wall of each rotating shaft is fixedly sleeved with a set of gears, and the two gears are connected in a meshed mode. Compared with the prior art, the heating device for the BGA rework table has a good temperature control effect, the function of protecting a circuit board is achieved, meanwhile, the heating device for the BGA rework table further has a good damping effect, and the situation that when the rework table is vibrated, an internal heating structure is damaged, and normal work of the rework table is affected is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated circuit boards, in particular to a BGA rework station heating device. Background Art

[0002] BGA stands for Ball Grid Array (PCB with ball grid array structure). It is a packaging method for integrated circuits using organic substrates. It has the following characteristics: reduced packaging area, increased functions, increased number of pins, self-centering during PCB soldering, easy tinning, high reliability, good electrical performance, and low overall cost. In the BGA rework station, the heating device is very important.

[0003] At present, most BGA rework station heating devices are difficult to control in temperature during use, and the temperature is often too high, causing the circuit board to melt and damage the circuit board. Therefore, those skilled in the art provide a BGA rework station heating device to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a BGA rework station heating device is proposed. The BGA rework station heating device has a good temperature control effect, and realizes the function of protecting the circuit board. At the same time, the BGA rework station heating device also has a good shock absorption effect, which prevents the internal heating structure of the rework station from being damaged when the rework station is vibrated, thereby affecting the normal operation of the rework station.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A BGA rework station heating device comprises a workbench, wherein an elastic block is fixedly embedded on the upper surface of the workbench, a fixing frame is arranged on the inner wall of the elastic block, an outer shell is fixedly arranged on the upper surface of the fixing frame, a plurality of through holes are opened on the upper surface of the outer shell, two rotating shafts are rotatably arranged on the inner wall of the outer shell, a group of fan plates are fixedly arranged on the outer walls of the two rotating shafts, and a group of gears are fixedly sleeved on one end of the outer walls of the two rotating shafts, and the two gears are meshed and connected.

[0007] With the above technical solution, the two gears are meshed to drive the two shafts to rotate in opposite directions, thereby making it easier to control the flow of heat.

[0008] Furthermore, a motor is fixedly arranged on one side wall of the housing, and an output end of the motor is fixedly connected to a rotating shaft;

[0009] Through the above technical solution, the motor can drive the rotating shaft to rotate, thereby making it easier to control the flow of heat.

[0010] Furthermore, four second rotating seats are fixedly arranged on the outer wall of the fixed frame, the inner walls of the four second rotating seats are rotatably connected with dampers, and the outer walls of the four dampers are sleeved with springs;

[0011] Through the above technical solution, under the cooperation between the damper and the spring, the electronic components inside the fixed frame are effectively protected to prevent the heating structure from being damaged due to vibration.

[0012] Furthermore, four first rotating seats are fixedly arranged at the bottom of the four workbenches, and the four first rotating seats are rotatably connected to the corresponding dampers respectively;

[0013] Through the above technical solution, the first rotating seat and the corresponding damper cooperate with each other, so as to support the fixed frame.

[0014] Furthermore, an air pump is fixedly arranged on one side of the inner wall of the workbench, and an input end of the air pump is fixedly connected to a connecting pipe which penetrates the fixed frame and extends to the inside thereof;

[0015] Through the above technical solution, with the cooperation of the vacuum pump and the connecting pipe, excess heat can be extracted to avoid damage to the device caused by excessive temperature.

[0016] Furthermore, a solenoid valve is fixedly provided on one side wall of the workbench, and the solenoid valve is fixedly connected to the output end of the air pump;

[0017] Through the above technical solution, the flow of heat can be controlled by the solenoid valve.

[0018] Furthermore, a heating structure is fixedly arranged on the inner wall of the fixing frame;

[0019] Through the above technical solution, the circuit board can be heated by the heating structure.

[0020] Furthermore, the fixing frame and the inner wall of the shell are both fixedly provided with a heat preservation layer, one side of the heat preservation layer is provided with an insulating layer, and one side of the insulating layer is provided with a flame retardant layer;

[0021] Through the above technical solution, the device can be better protected by providing a thermal insulation layer and a flame retardant layer.

[0022] The utility model has the following beneficial effects:

[0023] 1. The utility model proposes a BGA rework station heating device, which drives the rotating shaft to rotate by the clockwise rotation of the motor. Under the meshing action of the gears, the two sets of fan plates can rotate in opposite directions. Since one side is a negative pressure turntable, the heat can be discharged under the action of the through hole. When the temperature needs to be controlled, it is only necessary to drive the motor to rotate counterclockwise to move the heat generated by the heating structure downward. Under the action of the vacuum pump, the connecting pipe and the solenoid valve, the heat can be extracted, thereby better controlling the temperature and avoiding the melting of the circuit board due to excessive temperature.

[0024] 2. The utility model proposes a BGA rework station heating device. When the device is hit, under the cooperation of the first rotating seat, the damper, the spring and the second rotating seat, the contraction of the damper and the spring can play a shock-absorbing role. Under the cooperation of the elastic block, the electronic components in the fixed frame can be protected, thereby greatly improving the service life of the heating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an axonometric diagram of a BGA rework station heating device proposed by the utility model;

[0026] Figure 2 This is a front cross-sectional view of a BGA rework station heating device proposed by the utility model;

[0027] Figure 3 A top sectional view of the housing of a BGA rework station heating device proposed by the utility model;

[0028] Figure 4 This is a partial structural schematic diagram of a BGA rework station heating device proposed by the utility model;

[0029] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0030] Legend:

[0031] 1. Workbench; 2. Shell; 3. Through hole; 4. Solenoid valve; 5. Vacuum pump; 6. Connecting pipe; 7. First rotating seat; 8. Damper; 9. Spring; 10. Second rotating seat; 11. Heating structure; 12. Fixed frame; 13. Elastic block; 14. Gear; 15. Rotating shaft; 16. Fan plate; 17. Motor; 18. Flame retardant layer; 19. Insulating layer; 20. Thermal insulation layer. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-5 The utility model provides an embodiment: a BGA rework station heating device, including a workbench 1, an elastic block 13 is fixedly embedded on the upper surface of the workbench 1, a fixing frame 12 is arranged on the inner wall of the elastic block 13, a shell 2 is fixedly arranged on the upper surface of the fixing frame 12, a plurality of through holes 3 are opened on the upper surface of the shell 2, two rotating shafts 15 are rotatably arranged on the inner wall of the shell 2, a group of fan plates 16 are fixedly arranged on the outer walls of the two rotating shafts 15, and a group of gears 14 are fixedly sleeved on one end of the outer walls of the two rotating shafts 15, the two gears 14 are meshed and connected, and the two rotating shafts 15 are driven to rotate in opposite directions through the meshing transmission between the two gears 14, so as to facilitate the control of heat flow.

[0034] A motor 17 is fixedly provided on one side wall of the housing 2, and the output end of the motor 17 is fixedly connected to a rotating shaft 15. The rotating shaft 15 can be driven to rotate by the motor 17, so as to facilitate the control of the flow of heat. Four second rotating seats 10 are fixedly provided on the outer wall of the fixed frame 12, and the inner walls of the four second rotating seats 10 are rotatably connected to dampers 8. The outer walls of the four dampers 8 are sleeved with springs 9. Under the mutual cooperation between the dampers 8 and the springs 9, the electronic devices inside the fixed frame 12 are effectively protected to prevent the heating structure 11 from being damaged due to vibration. Four first rotating seats 7 are fixedly provided on the bottom of the four workbenches 1, and the four first rotating seats 7 are rotatably connected to the corresponding dampers 8 respectively. Through the mutual cooperation between the first rotating seats 7 and the corresponding dampers 8, the fixed frame 12 can also be supported. An air pump 5 is fixedly arranged on one side of the inner wall of the workbench 1, and the input end of the air pump 5 is fixedly connected with a connecting pipe 6 and extends through the fixed frame 12 to the inside thereof. With the cooperation of the air pump 5 and the connecting pipe 6, excess heat can be extracted to prevent damage to the device caused by excessive temperature. A solenoid valve 4 is fixedly arranged on one side wall of the workbench 1, and the solenoid valve 4 is fixedly connected to the output end of the air pump 5. The flow of heat can be controlled by the solenoid valve 4. A heating structure 11 is fixedly arranged on the inner wall of the fixed frame 12, and the circuit board can be heated by the heating structure 11. A thermal insulation layer 20 is fixedly arranged on the inner wall of the fixed frame 12 and the outer shell 2, and an insulating layer 19 is arranged on one side of the thermal insulation layer 20, and a flame retardant layer 18 is arranged on one side of the insulating layer 19. The device can be better protected by arranging the thermal insulation layer 20, the insulating layer 19 and the flame retardant layer 18.

[0035] Working principle: When the utility model is in use, first start the heating structure 11, then start the motor 17, and use the motor 17 to rotate clockwise to drive a rotating shaft 15 to rotate. Under the action of the gear 14, the two sets of fan plates 16 move in opposite directions to form a negative pressure, which can discharge the generated heat upward. When the temperature is too high, the motor 17 rotates counterclockwise to make it difficult for heat to enter the upper end. Then open the solenoid valve 4, and under the action of the vacuum pump 5 and the connecting pipe 6, the heat can be discharged. When the device as a whole is hit, with the cooperation of the damper 8 and the spring 9, with the assistance of the elastic block 13, the electronic devices inside the fixed frame 12 can be protected.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A BGA rework station heating device, comprising a workbench (1), characterized in that: An elastic block (13) is fixedly embedded on the upper surface of the workbench (1), a fixed frame (12) is arranged on the inner wall of the elastic block (13), a housing (2) is fixedly arranged on the upper surface of the fixed frame (12), a plurality of through holes (3) are opened on the upper surface of the housing (2), two rotating shafts (15) are rotatably arranged on the inner wall of the housing (2), a group of fan plates (16) are fixedly arranged on the outer walls of the two rotating shafts (15), and a group of gears (14) are fixedly sleeved on one end of the outer walls of the two rotating shafts (15), and the two gears (14) are meshingly connected.

2. A BGA rework station heating device according to claim 1, characterized in that: A motor (17) is fixedly arranged on one side wall of the housing (2), and an output end of the motor (17) is fixedly connected to a rotating shaft (15).

3. A BGA rework station heating device according to claim 1, characterized in that: Four second rotating seats (10) are fixedly arranged on the outer wall of the fixed frame (12), the inner walls of the four second rotating seats (10) are all rotatably connected to dampers (8), and the outer walls of the four dampers (8) are all sleeved with springs (9).

4. A BGA rework station heating device according to claim 1, characterized in that: Four first rotating seats (7) are fixedly arranged at the bottom of the four workbenches (1), and the four first rotating seats (7) are respectively rotatably connected to corresponding dampers (8).

5. A BGA rework station heating device according to claim 1, characterized in that: An air pump (5) is fixedly arranged on one side of the inner wall of the workbench (1), and an input end of the air pump (5) is fixedly connected to a connecting pipe (6) which penetrates the fixing frame (12) and extends into the interior thereof.

6. A BGA rework station heating device according to claim 1, characterized in that: A solenoid valve (4) is fixedly arranged on one side wall of the workbench (1), and the solenoid valve (4) is fixedly connected to the output end of the air extraction pump (5).

7. A BGA rework station heating device according to claim 1, characterized in that: A heating structure (11) is fixedly arranged on the inner wall of the fixing frame (12).

8. The BGA rework station heating device according to claim 1, characterized in that: The fixing frame (12) and the inner wall of the outer shell (2) are both fixedly provided with a heat-insulating layer (20), one side of the heat-insulating layer (20) is provided with an insulating layer (19), and one side of the insulating layer (19) is provided with a flame-retardant layer (18).

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