Vacuum heating machine

Abstract

The utility model discloses a vacuum heating machine which comprises a machine body, a heating plate, a vacuumizing unit and a cooling mechanism used for cooling a circuit board. The upper end face of the machine body is downwards concavely provided with a first concave cavity, and the heating plate is located in the first concave cavity. The upper end face of the machine body is in pivot joint with a covering piece used for opening or closing the first concave cavity, after the covering piece covers the first concave cavity, a closed vacuumizing cavity is formed between the covering piece and the first concave cavity, and the vacuumizing unit is used for vacuumizing the vacuumizing cavity. The cooling mechanism comprises a cooling plate for cooling the heated circuit board, and the cooling plate is arranged on the upper end face of the machine body; the main control unit is respectively connected with the heating plate and the vacuumizing unit; according to the vacuum heating machine, it can be ensured that solder paste on a circuit board cannot be oxidized after being heated, then normal use of an LED lamp on the circuit board is ensured, the circuit board can be cooled in time, heating and cooling are integrated, and the functions of the vacuum heating machine are enriched.

Description

Technical Field

[0001] The utility model relates to the technology in the field of vacuum heating machines, and in particular to a vacuum heating machine. Background Art

[0002] The names of circuit boards include: ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, printed circuit boards, PCB boards, aluminum substrates, high-frequency boards, thick copper boards, impedance boards, PCBs, ultra-thin printed circuit boards, ultra-thin circuit boards, printed (copper etching technology) circuit boards, etc.

[0003] Circuit boards make the circuit intuitive and play an important role in the mass production of fixed circuits and the optimization of the layout of electrical appliances.

[0004] Surface mount technology plays an increasingly important role in electronic assembly, and solder paste is a kind of solder that emerged with surface mount technology and is also an extremely important auxiliary material in surface mount.

[0005] Existing LED lights are soldered to the circuit board through solder paste and then need to be heated by a heating machine. However, there is air in the heating cavity of the existing heating machine, which easily causes the solder paste to oxidize, thereby affecting the normal use of the LED lights on the circuit board. Summary of the Utility Model

[0006] Aiming at the deficiencies of the above-mentioned existing technologies, the main purpose of the utility model is to provide a vacuum heating machine, which can ensure that the solder paste on the circuit board will not oxidize after heating, thereby ensuring the normal use of the LED lights on the circuit board. Moreover, it can cool the circuit board in time, integrating heating and cooling, and enriching the functions of the vacuum heating machine.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A vacuum heating machine includes a machine body, a heating plate for heating a circuit board, a vacuum pumping unit for pumping vacuum, and a cooling mechanism for cooling the circuit board;

[0009] A first concave cavity is recessed downward from the upper end surface of the machine body, and the heating plate is located in the first concave cavity;

[0010] A covering member for opening or closing the first concave cavity is pivotally connected to the upper end surface of the machine body. After the covering member covers the first concave cavity, a sealed vacuum pumping cavity is formed between the covering member and the first concave cavity, and the vacuum pumping unit is used for pumping vacuum in the vacuum pumping cavity;

[0011] The cooling mechanism includes a cooling plate for cooling the heated circuit board, and the cooling plate is arranged on the upper end surface of the machine body;

[0012] It further includes a main control unit, and the main control unit is respectively connected to the heating plate and the vacuum pumping unit.

[0013] As a preferred solution, a visible window is provided on the covering member.

[0014] As a preferred solution, a cooling water flow channel is formed in the cooling plate.

[0015] As a preferred solution, a second concave cavity is recessed downward on the upper end surface of the fuselage, and the cooling plate is located in the second concave cavity.

[0016] As a preferred solution, a first heat conducting plate for placing the heated circuit board and conducting its heat to the cooling plate is connected to the top wall of the cooling plate.

[0017] As a preferred solution, the second concave cavity and the first concave cavity are arranged side by side left and right.

[0018] As a preferred solution, telescopic support feet are provided at the four corners of the lower end surface of the fuselage, and a movable footrest is provided beside each telescopic support foot, and the telescopic support feet are connected to the main control unit.

[0019] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it mainly heats in the vacuum chamber, which can ensure that the solder paste on the circuit board will not be oxidized after heating, and then ensure the normal use of the LED lights on the circuit board. Moreover, through the cooling plate, the circuit board can be cooled in time, integrating heating and cooling, and enriching the functions of the vacuum heating machine;

[0020] Secondly, through the second heat conducting plate, the heat on the heating plate can be conducted to the circuit board, thereby avoiding local high temperature. Moreover, the heat conduction of the second heat conducting plate is more controllable than direct heating, thus reducing the damage of the circuit board;

[0021] Furthermore, through the first heat conducting plate, the heat of the circuit board can be transferred to the cooling plate through the second heat conducting plate and absorbed by the cooling plate, improving the heat dissipation efficiency of the circuit board;

[0022] And, through the visible window of the covering member, it is convenient to directly view the processing condition of the circuit board.

[0023] To more clearly elaborate the structural features, technical means, and the specific purposes and functions achieved by the utility model, the following further details the utility model in conjunction with the drawings and specific embodiments. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0025] Figure 2 is Figure 1 The enlarged structural schematic diagram of part A in

[0026] Figure 3 is Figure 1 The enlarged structural schematic diagram of part B in

[0027] Figure 4 is the approximate control principle block diagram of the embodiment of the present utility model.

[0028] Explanation of the reference numerals in the drawings:

[0029] 11, body

[0030] 111, first cavity 112, second cavity

[0031] 12, main control unit 13, covering member

[0032] 131, visible window 14, detection unit

[0033] 21, heating plate body 211, through hole

[0034] 22, heating tube 23, second heat conducting plate

[0035] 231, placement groove

[0036] 30, vacuum pumping unit

[0037] 41, retractable support foot pads 42, movable foot rest

[0038] 51, cooling plate 52, cooling water flow path

[0039] 53, first heat conducting plate. Specific embodiments

[0040] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0041] As Figures 1 to 4 shown, a vacuum heating machine includes a body 11, a main control unit 12, a heating plate for heating a circuit board, a vacuum pumping unit 30 for pumping vacuum, and a cooling mechanism for cooling the circuit board.

[0042] At the four corners of the lower end surface of the body 11, retractable support foot pads 41 are provided, and a movable foot rest 42 is provided beside each retractable support foot pad 41. The retractable support foot pads 41 are connected to the main control unit 12. In actual use, when the body 11 needs to be moved, the main control unit 12 controls the retractable support foot pads 41 to contract upward, so that the movable foot rest 42 touches the ground, facilitating movement; when the body 11 needs to be fixedly placed, the main control unit 12 controls the retractable support foot pads 41 to extend downward to lift the movable foot rest 42 off the ground, facilitating placement.

[0043] The upper end surface of the fuselage 11 is recessed downward to form a first cavity 111 and a second cavity 112 arranged side by side left and right. The heating plate is located in the first cavity 111. The main control unit 12 is connected to the heating plate and the vacuum pumping unit 30. The heating plate includes a heating plate body 21 and a plurality of heating tubes 22. The heating plate body 21 has a plurality of through holes 211 that are open front and back. All the through holes 211 are arranged side by side at intervals in the left-right direction. Each through hole 211 is provided with a heating tube 22, and all the heating tubes 22 are electrically connected to the main control unit 12.

[0044] In this embodiment, the top wall of the heating plate is connected with a second heat conducting plate 23 for conducting the heat of the heating plate to the circuit board. A placement groove 231 for placing the circuit board is provided on the second heat conducting plate 23.

[0045] The upper end surface of the fuselage 11 is pivotally connected with a covering member 13 for opening or closing and covering the first cavity 111. In this embodiment, a visual window 131 is provided on the covering member 13. Through the visual window 131, the situation of the circuit board can be intuitively understood. A detection unit 14 for detecting whether the covering member 13 is opened is provided on the fuselage, and the detection unit 14 is connected to the main control unit 12. Preferably, the detection unit 14 is an infrared detector.

[0046] After the covering member 13 covers the first cavity 111, a sealed vacuum chamber is formed between the covering member 13 and the first cavity 111. The vacuum pumping unit 30 is used for pumping vacuum in the vacuum chamber.

[0047] The cooling mechanism includes a cooling plate 51 for cooling the heated circuit board. The cooling plate 51 is arranged on the upper end surface of the fuselage 11. In this embodiment, a plurality of cooling water channels 52 that are arranged side by side at intervals left and right and are open front and back are formed in the cooling plate 51. The water inlet ends of each cooling water channel 52 are commonly connected to a cooling water supply tank, and the water outlet ends of each cooling water channel 52 are commonly connected to a recovery tank.

[0048] The cooling plate 51 is located in the second cavity 112. The cooling mechanism further includes a first heat conducting plate 53 for placing the heated circuit board and conducting its heat to the cooling plate 51. The top wall of the cooling plate 51 is connected to the bottom wall of the second heat conducting plate 23. Preferably, both the first heat conducting plate 53 and the second heat conducting plate 23 are aluminum heat conducting plates.

[0049] In summary, the design key point of the present utility model is that it mainly heats in a vacuum chamber, which can ensure that the solder paste on the circuit board will not be oxidized after heating, and then ensure the normal use of the LED lights on the circuit board. Moreover, through the cooling plate, the circuit board can be cooled in time, integrating heating and cooling, and enriching the functions of the vacuum heating machine;

[0050] Secondly, through the second heat conducting plate, the heat on the heating plate can be conducted to the circuit board, thus avoiding local high temperature. Moreover, the heat conduction of the second heat conducting plate is more controllable than direct heating, thereby reducing the damage of the circuit board;

[0051] Furthermore, through the first heat conducting plate, the heat of the circuit board can be transferred to the cooling plate through the second heat conducting plate and absorbed by the cooling plate, improving the heat dissipation efficiency of the circuit board;

[0052] And, through the visual window of the covering member, it is convenient to directly view the processing condition of the circuit board.

[0053] The above is only a preferred embodiment of the present utility model, and does not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A vacuum heating machine, characterized in that: It includes a fuselage, a heating plate for heating a circuit board, a vacuum pumping unit for vacuum pumping, and a cooling mechanism for cooling the circuit board; A first concave cavity is recessed downward from the upper end surface of the fuselage, and the heating plate is located in the first concave cavity; A covering member for opening or closing and covering the first concave cavity is pivotally connected to the upper end surface of the fuselage. After the covering member covers the first concave cavity, a sealed vacuum chamber is formed between the covering member and the first concave cavity, and the vacuum pumping unit is used to pump vacuum in the vacuum chamber; The cooling mechanism includes a cooling plate for cooling the heated circuit board, and the cooling plate is arranged on the upper end surface of the fuselage; It also includes a main control unit, and the main control unit is respectively connected to the heating plate and the vacuum pumping unit.

2. The vacuum heating machine according to claim 1, wherein: A visual window is arranged on the covering member.

3. The vacuum heating machine according to claim 1, characterized in that: A cooling water flow channel is arranged in the cooling plate.

4. The vacuum heating machine according to claim 1, characterized in that: A second concave cavity is further recessed downward from the upper end surface of the fuselage, and the cooling plate is located in the second concave cavity.

5. The vacuum heating machine according to claim 4, wherein: The top wall of the cooling plate is connected with a first heat conducting plate for placing the heated circuit board and conducting its heat to the cooling plate.

6. The vacuum heating machine according to claim 4, wherein: The second concave cavity and the first concave cavity are arranged side by side left and right.

7. The vacuum heating machine according to claim 1, wherein: Retractable support feet are arranged at the four corners of the lower end surface of the fuselage, and a movable footrest is arranged beside each retractable support foot, and the retractable support feet are connected to the main control unit.

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