Hot air blow-drying device for circuit board

Abstract

The utility model belongs to the technical field of circuit board drying equipment, and discloses a circuit board hot air blow-drying device which comprises a drying box body and a cabinet door, an air heater is installed on the inner wall of the right part of the drying box body, a driving motor is installed on the inner wall of the left side of the drying box body, and an output shaft of the driving motor is fixedly connected with a rotating shaft. Supporting frames are symmetrically and fixedly installed on the outer surface of the rotating shaft, a lead screw is rotationally connected to the interior of the rotating shaft, a sliding plate is connected to the outer surface of the lead screw through threads, and auxiliary pressing plates are symmetrically and fixedly connected to the outer side of the sliding plate; the circuit board to be dried is placed on the supporting frame, and the driving motor is started to work to drive the supporting frame to turn over, so that when the circuit board is dried, the circuit board can be continuously and uniformly surrounded by hot air blown out by the air heater, moisture in the circuit board is promoted to be uniformly evaporated, the drying time is shortened, and the drying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of circuit board drying equipment, especially relates to a circuit board hot -blast drying device. BACKGROUND

[0002] The circuit board is a kind of substrate for connecting and supporting electronic components, and it is printed with conductive circuit and the mounting position of electronic components;It is an indispensable component in electronic equipment, carries the signal transmission and power supply between electronic components, in addition, circuit board can also be divided into soft board (FPC), hard board (PCB) and soft and hard combination board (FPCB) according to characteristics, respectively with different material and design features.

[0003] In the production of circuit board, the chemical solvent used in etching process contains moisture, these moisture is adsorbed on the substrate of circuit board, and the moisture left on its surface is dried by directly heating the circuit board, which is easy to make the internal heating of circuit board uneven, so that the moisture evaporation is uneven, resulting in partial moisture remaining, making the circuit short circuit and circuit failure, affecting product quality. INVENTION CONTENTS

[0004] The utility model discloses to the chemical solvent containing moisture used in etching process in prior art, these moisture is adsorbed on the substrate of circuit board, and the moisture left on its surface is dried by directly heating the circuit board, which is easy to make the internal heating of circuit board uneven, so that the moisture evaporation is uneven, resulting in partial moisture remaining, making the circuit short circuit and circuit failure, affecting product quality, propose the following technical scheme:

[0005] A kind of circuit board hot -blast drying device, including drying box body and cabinet door, hot air machine is installed in the right part inner wall of the drying box body, drive motor is installed on the left side inner wall of the drying box body, the output shaft of the drive motor is fixedly connected with rotating shaft, support frame is fixedly installed on the outer surface of the rotating shaft symmetrically, screw rod is rotatably connected in the rotating shaft, the outer surface of the screw rod is connected with sliding plate by screw thread, the outer side of the sliding plate is fixedly connected with auxiliary pressing plate symmetrically.

[0006] As the preferred of above technical scheme, the end of the rotating shaft away from drive motor is rotatably installed in the inside of drying box body.

[0007] As the preferred of above technical scheme, the outer side of the rotating shaft is fixedly installed with limit post symmetrically, and the sliding plate is slidably installed on the outer side of limit post.

[0008] As the preferred of above technical scheme, the axis of screw rod and the plane of support frame are perpendicular.

[0009] As the preferred technical scheme, the auxiliary pressing plates are adhered with rubber pads on the end faces close to the support frames.

[0010] As the preferred technical scheme, the inside of the drying box body is fixedly installed with a magnet, the top end of the magnet is installed with a placement plate, and the top end of the placement plate is provided with water absorption cotton.

[0011] The present application has the following beneficial effects:

[0012] (1) The circuit board to be dried is placed on the support frame, the driving motor is started to drive the support frame to overturn, so that the circuit board can be evenly surrounded by the hot air blown out by the hot air blower during drying operation, the internal moisture of the circuit board is evenly evaporated, the drying time is shortened, and the drying efficiency is improved.

[0013] (2) The water vapor evaporated in the air during drying of the circuit board is effectively absorbed by the water absorption cotton installed in the drying box body, so that the air in the drying box is kept dry, and the drying speed of the circuit board is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 shows the overall structure of a circuit board hot air blowing drying device;

[0015] Figure 2 Fig. 2 shows the internal structure of a circuit board hot air blowing drying device;

[0016] Figure 3 Fig. 3 shows the support frame structure of a circuit board hot air blowing drying device;

[0017] Figure 4 Fig. 4 shows the placement plate structure of a circuit board hot air blowing drying device.

[0018] In the figure: 1, drying box body; 2, cabinet door; 3, hot air blower; 4, driving motor; 5, rotating shaft; 6, support frame; 7, screw rod; 8, sliding plate; 9, auxiliary pressing plate; 10, limiting column; 11, magnet; 12, placement plate; 13, water absorption cotton. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be described clearly and completely below in conjunction with the embodiments.

[0020] Embodiment 1: The present application provides a circuit board hot air blowing drying device, which comprises a drying box body, a cabinet door, a hot air blower, a driving motor, a rotating shaft, a support frame, a screw rod, a sliding plate, an auxiliary pressing plate, a limiting column, a magnet, a placement plate and water absorption cotton. Figures 1 to 4As shown, including, drying box body 1 and cabinet door 2, the right part of the inner wall of drying box body 1 is provided with hot air machine 3, the left side wall of drying box body 1 is provided with driving motor 4, the output shaft of driving motor 4 is fixedly connected with rotating shaft 5, one end of rotating shaft 5 away from driving motor 4 is rotatably installed in the inside of drying box body 1, the outer surface of rotating shaft 5 is fixedly installed with support frame 6 in a symmetrical manner, the inside of rotating shaft 5 is rotatably connected with lead screw 7, the axis of lead screw 7 is perpendicular to the plane of support frame 6, the outer surface of lead screw 7 is connected with sliding plate 8 through thread, the outer side of sliding plate 8 is fixedly connected with auxiliary pressing plate 9 in a symmetrical manner, the outer side of rotating shaft 5 is fixedly installed with limiting column 10 in a symmetrical manner, sliding plate 8 is slidably installed on the outer side of limiting column 10, when in use, the circuit board to be dried is placed on support frame 6, then rotating lead screw 7, through the setting of limiting column 10, the free rotation of sliding plate 8 is limited, and then the rotation of lead screw 7 drives the vertical sliding of sliding plate 8 through the thread connection, so that sliding plate 8 moves towards support frame 6, so that it can extrude and fix the circuit board on support frame 6, then start driving motor 4 to work, so that rotating shaft 5 rotates to drive support frame 6 and the circuit board on support frame 6 to rotate together, so that the outer surface of the circuit board can be continuously surrounded by hot air, promoting the uniform evaporation of water in the circuit board, improving the drying efficiency, and the number of lead screw 7, sliding plate 8, auxiliary pressing plate 9 and limiting column 10 is set to two groups, which can install the circuit board to be dried on the top end and the bottom end of support frame 6 respectively, realize double-sided drying of the circuit board and simultaneous drying of multiple circuit boards, and improve the work efficiency.

[0021] As shown in Figure 2 and Figure 3 , the end face of the auxiliary pressing plate 9 close to the support frame 6 is adhered with a rubber pad, so that when the auxiliary pressing plate 9 extrudes and fixes the circuit board on the support frame 6, the direct contact between the auxiliary pressing plate 9 and the circuit board is effectively slowed down under the action of the rubber pad, thereby avoiding damage or deformation of the circuit board due to excessive extrusion, and ensuring the good use state of the circuit board.

[0022] As shown in Figure 1 , Figure 2 and Figure 4 , the inside of drying box body 1 is fixedly installed with magnet 11, the top end of magnet 11 is installed with placement plate 12, the top end of placement plate 12 is provided with water absorption cotton 13, in use, the placement plate 12 is placed on the top end of magnet 11, so that the placement plate 12 and the water absorption cotton 13 are tightly attracted by the magnet 11, and then the circuit board in the inside of drying box body 1 can effectively absorb the water vapor generated in the inside of drying box body 1 during drying, thereby protecting the safety of the circuit board and prolonging its service life, and the water absorption cotton 13 is conveniently and quickly taken out and replaced by using the characteristics of magnet 11 adsorption, without disassembly, and the operation is more simple and convenient.

[0023] Working principle: in use, open the cabinet door 2, the circuit board to be dried is placed on the support frame 6, then the lead screw 7 is rotated, the lead screw 7 is rotated to drive the sliding plate 8 to move to the direction close to the support frame 6 through the action of threaded connection, and then the auxiliary pressing plate 9 is moved and contacted with the circuit board, so that the auxiliary pressing plate 9 is extruded and fixed on the circuit board on the support frame 6, then the cabinet door 2 is closed, the hot air blower 3 and the driving motor 4 are started to work, the rotating shaft 5 is rotated to drive the support frame 6 and the circuit board to rotate together, so that the circuit board can be evenly surrounded by the hot air generated by the hot air blower 3, the water in the circuit board is evenly evaporated, and the drying time is shortened;

[0024] The water vapor generated when the water in the circuit board evaporates enters the inside of the drying box body 1 and is absorbed by the water absorption cotton 13, so that the water vapor is prevented from accumulating in the inside of the drying box body 1, the stability of the drying environment in the inside of the drying box body 1 is ensured, and the circuit board is effectively protected from moisture.

[0025] The above examples are only used to illustrate the technical solutions of the utility model, and not to limit them.

Claims

1. A circuit board hot air drying device, characterized in that, The utility model provides a drying box, including drying box body (1) and cabinet door (2), the right part inner wall of drying box body (1) is installed with hot air machine (3), the left side inner wall of drying box body (1) is installed with drive motor (4), the output shaft of drive motor (4) is fixedly connected with rotating shaft (5), the outer surface of rotating shaft (5) is fixedly installed with support frame (6) symmetrically, the inside rotation of rotating shaft (5) is connected with lead screw (7), the outer surface of lead screw (7) is connected with sliding plate (8) through thread, the outer side of sliding plate (8) is fixedly connected with auxiliary pressing plate (9) symmetrically.

2. The circuit board hot air drying apparatus according to claim 1, wherein The end of the rotating shaft (5) away from the drive motor (4) is rotatably installed in the inside of the drying box body (1).

3. The circuit board hot air drying apparatus according to claim 1, wherein The outer side of the rotating shaft (5) is fixedly installed with a limiting post (10) symmetrically, and the sliding plate (8) is slidably installed on the outer side of the limiting post (10).

4. The circuit board hot air drying apparatus according to claim 1, wherein The axis of the lead screw (7) is perpendicular to the plane of the support frame (6).

5. The circuit board hot air drying apparatus according to claim 1, wherein The end surface of the auxiliary pressing plate (9) close to the support frame (6) is bonded with a rubber pad.

6. The circuit board hot air drying apparatus according to claim 1, wherein The inside of the drying box body (1) is fixedly installed with a magnet (11), the top end of the magnet (11) is installed with a placement plate (12), and the top end of the placement plate (12) is provided with a water-absorbing cotton (13).

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