PCB drying device for liquid crystal display

Abstract

The utility model relates to the technical field of PCB processing discloses a kind of PCB board drying device for LCD, comprising: drying cabinet, and the positioner installed in the inside of drying cabinet, symmetrically installed on the positioner and the conveying mechanism of the PCB board transmission, and the conveying mechanism spacing adjustment is realized to the conveying of different specifications PCB board by positioner;The inner chamber of the drying cabinet is provided with the drying mechanism of the PCB board blow-drying, and the bidirectional air supply drying of PCB board is realized by drying mechanism;Through the cooperation between drying cabinet and drying mechanism, the heated airflow can be evenly blown on the upper surface and lower surface of PCB board by the bidirectional blow setting of drying mechanism, and then the uniform drying of PCB board upper surface and lower surface is realized, to avoid the moisture accumulation in PCB board, improve the quality of subsequent welding of PCB board.

Description

Technical Field

[0001] This utility model relates to the field of PCB processing technology, specifically to a PCB board drying device for liquid crystal displays. Background Technology

[0002] PCB, or Printed Circuit Board, is an important electronic component. It serves as the support for electronic components and the carrier for their electrical interconnection. Because it is made using electronic printing technology, it is called a "printed" circuit board. During the printing and production process of PCB boards, drying is required to ensure that the PCB board and components can be fully soldered. Drying also eliminates internal stress on the PCB board and stabilizes its dimensions.

[0003] Most existing PCB drying devices stack multiple PCBs and place them in a sealed drying device for centralized drying. However, centralized drying can lead to uneven heating of the upper and lower surfaces of the PCBs, which may cause the PCBs to deform. Furthermore, residual moisture inside the board can affect the soldering of components. Therefore, we need to propose a PCB drying device for LCD displays. Utility Model Content

[0004] The purpose of this invention is to provide a PCB board drying device for LCD displays. By setting a bidirectional air outlet mechanism, air can be blown onto the upper and lower surfaces of the PCB board at the same time, thereby ensuring uniform heating of the upper and lower surfaces of the PCB board and avoiding uneven heating that could cause warping of the PCB board edges or internal moisture accumulation, thus improving the drying effect of the PCB board and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PCB board drying device for liquid crystal displays, comprising:

[0006] A drying oven and an adjusting mechanism installed inside the drying oven. The adjusting mechanism is symmetrically equipped with a conveying mechanism for conveying PCB boards. The distance between the two sets of conveying mechanisms is adjusted by the adjusting mechanism to realize the conveying of PCB boards of different specifications.

[0007] The drying chamber is equipped with a drying mechanism for blowing air to dry the PCB board, which realizes bidirectional air supply drying of the PCB board.

[0008] Preferably, the drying mechanism includes two sets of air guide plates symmetrically installed in the inner cavity of the drying chamber. Each set of air guide plates has multiple sets of air outlets on one side of its opposite side, and each set of air outlets is provided with a filter screen. The inner cavity of the air guide plate is provided with multiple sets of heating wires.

[0009] Preferably, the drying mechanism further includes a blower installed on the upper surface of the drying chamber. The blower has a dustproof mesh cover installed at its air inlet end and an air guide pipe installed at its air outlet end. Both sets of air guide plates are provided with connecting pipes that communicate with the air guide pipes, and both sides of the two sets of air guide plates are provided with fixing rods fixed to the inner wall of the drying chamber.

[0010] Preferably, the adjusting mechanism includes a bidirectional lead screw and support frames disposed at both ends of the bidirectional lead screw. Both ends of the two sets of support frames on opposite sides are provided with connecting cylinders, and the ends of the connecting cylinders are fixedly connected to mounting frames for the installation of the conveying mechanism. One end of the bidirectional lead screw passes through the drying box and is driven by a first motor.

[0011] Preferably, limiting beams are fixedly connected to both sides of the inner cavity of the mounting frame, and multiple sets of guide rods are fixedly connected to the inner cavity of the drying box, with both sets of support frames slidingly arranged on the multiple sets of guide rods.

[0012] Preferably, the conveying mechanism includes synchronous rollers rotatably mounted at both ends within the mounting frame, and a synchronous belt is provided between the two sets of synchronous rollers. The inner wall of the synchronous belt abuts against multiple sets of limiting beams, and multiple sets of suction holes are opened on the outer side of the synchronous belt. The shaft end of one set of synchronous rollers passes through the support frame and is driven by a second motor. A protruding beam is provided at the upper end of the mounting frame.

[0013] Preferably, a control panel is provided on one side of the drying box, negative pressure fans are provided on opposite sides of the two sets of mounting frames, and corrugated pipes are provided at the air outlet of the negative pressure fans. Air outlets communicating with the corrugated pipes are respectively opened on both sides of the drying box, and material inlet and outlet holes are opened on the other two sides of the drying box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention mainly utilizes the cooperation between the drying oven and the drying mechanism. Through the bidirectional air blowing setting of the drying mechanism, the heated airflow can be evenly blown onto the upper and lower surfaces of the PCB board, thereby ensuring uniform drying of the upper and lower surfaces of the PCB board. This ensures that the PCB board is heated evenly, avoids moisture accumulation inside the PCB board, and improves the quality of subsequent soldering. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the drying oven of this utility model;

[0018] Figure 3 This is a schematic diagram of the adjusting mechanism and PCB board conveying mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the drying mechanism of this utility model.

[0020] In the diagram: 1. Drying oven; 2. Control panel; 3. Drying mechanism; 31. Blower; 32. Dustproof mesh cover; 33. Air duct; 34. Connecting pipe; 35. Air guide plate; 36. Fixing rod; 37. Air outlet; 38. Heating wire; 4. Inlet / outlet; 5. Adjustment mechanism; 51. First motor; 52. Bidirectional lead screw; 53. Support frame; 54. Connecting cylinder; 55. Mounting frame; 56. Protruding beam; 57. Limiting beam; 58. Guide rod; 6. Conveying mechanism; 61. Second motor; 62. Synchronous roller; 63. Synchronous belt; 64. Suction hole; 7. Negative pressure fan; 8. Corrugated pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a PCB board drying device for liquid crystal displays, comprising:

[0023] Drying box 1, and adjusting mechanism 5 installed inside drying box 1. Conveying mechanism 6 for conveying PCB boards is symmetrically installed on adjusting mechanism 5. The distance between the two sets of conveying mechanisms 6 is adjusted by adjusting mechanism 5 to realize the conveying of PCB boards of different specifications.

[0024] The inner cavity of the drying oven 1 is equipped with a drying mechanism 3 for blowing air to dry the PCB board, and the drying mechanism 3 realizes bidirectional air supply drying of the PCB board.

[0025] The drying mechanism 3 includes two sets of air guide plates 35 symmetrically installed in the inner cavity of the drying box 1. Each set of air guide plates 35 has multiple sets of air outlet holes 37 on one side of the opposite side, and each set of air outlet holes 37 is equipped with a filter screen. Multiple sets of heating wires 38 are provided in the inner cavity of the air guide plates 35.

[0026] In this embodiment, bidirectional airflow to the PCB board is achieved through multiple sets of air outlets 37, and the filter screen (not shown in the figure) can further filter impurities in the air to avoid contaminating the PCB board. The heating wire 38 can heat the air, improve drying efficiency, and ensure drying quality. The inner cavity of the air guide plate 35 is equipped with a temperature sensor, which can monitor the temperature of the heated air and is electrically connected to the control panel 2 so that the control panel 2 can adjust the temperature rise of the heating wire 38.

[0027] The drying mechanism 3 also includes a blower 31 installed on the upper surface of the drying chamber 1. The air inlet end of the blower 31 is equipped with a dustproof mesh cover 32, and the air outlet end of the blower 31 is equipped with an air guide pipe 33. Both sets of air guide plates 35 are equipped with connecting pipes 34 that communicate with the air guide pipes 33, and both sides of the two sets of air guide plates 35 are equipped with fixing rods 36 fixed to the inner wall of the drying chamber 1.

[0028] Furthermore, the blower 31 provides a stable airflow for the drying mechanism 3, while the dust cover 32 prevents external dust from entering. The air duct 33 and the connecting pipe 34 accurately guide the airflow into the air guide plate 35. The fixing rod 36 enhances the stability of the air guide plate 35 installation, further improving the drying effect.

[0029] The adjustment mechanism 5 includes a bidirectional lead screw 52 and support frames 53 set at both ends of the bidirectional lead screw 52. Both ends of the two sets of support frames 53 on opposite sides are provided with connecting cylinders 54, and the ends of the connecting cylinders 54 are fixedly connected to the mounting frame 55 for the conveying mechanism 6 to be installed. One end of the bidirectional lead screw 52 passes through the drying box 1 and is driven by the first motor 51.

[0030] In a further preferred embodiment, the bidirectional lead screw 52 of the adjustment mechanism 5 rotates under the drive of the first motor 51, causing the support frame 53 to move relative to each other, thereby adjusting the distance between the two sets of conveying mechanisms 6 driven by the mounting frame 55. This can be adapted to PCB boards of different specifications, improving the versatility and flexibility of the device.

[0031] Limiting beams 57 are fixedly connected to both sides of the inner cavity of the mounting frame 55. Multiple sets of guide rods 58 are fixedly connected to the inner cavity of the drying oven 1. Both sets of support frames 53 are slidably set on the multiple sets of guide rods 58.

[0032] Preferably, the limiting beam 57 supports and limits the synchronous belt 63 of the conveying mechanism 6, preventing the synchronous belt 63 from deviating during operation. At the same time, the guide rod 58 provides guidance for the sliding of the support frame 53, ensuring a smooth adjustment process and enhancing the stability of the device operation.

[0033] The conveying mechanism 6 includes synchronous rollers 62 rotatably mounted at both ends inside the mounting frame 55, and a synchronous belt 63 is provided between the two sets of synchronous rollers 62. The inner wall of the synchronous belt 63 abuts against multiple sets of limiting beams 57. Multiple sets of suction holes 64 are opened on the outer side of the synchronous belt 63. The shaft end of one set of synchronous rollers 62 passes through the support frame 53 and is driven by the second motor 61. A protruding beam 56 is provided at the upper end of the mounting frame 55.

[0034] In this embodiment, the synchronous roller 62 and synchronous belt 63 of the conveying mechanism 6 work together to achieve stable conveying of the PCB board. The second motor 61 provides driving force, the limiting beam 57 abuts against the inner wall of the synchronous belt 63 to ensure smooth conveying, the suction hole 64 can enhance the adsorption and fixation of the PCB board, and the protruding beam 56 assists in positioning to ensure that the PCB board does not shake during conveying and improves the reliability of conveying.

[0035] A control panel 2 is provided on one side of the drying oven 1. Negative pressure fans 7 are provided on opposite sides of the two sets of mounting frames 55, and corrugated pipes 8 are provided at the air outlet of the negative pressure fans 7. Air outlet holes 37 communicating with the corrugated pipes 8 are opened on both sides of the drying oven 1. Material inlet and outlet holes 4 are opened on the other two sides of the drying oven 1. The control panel 2 facilitates the operator to adjust the operating parameters of the device. The negative pressure fans 7 draw the air out of the mounting frames 55 through the corrugated pipes 8, thereby creating a negative pressure in the inner cavity of the synchronous belt 63, so as to adsorb and position the PCB board through the suction hole 64, ensuring the stability of the PCB board movement.

[0036] In use, firstly, according to the PCB board specifications, the first motor 51 of the adjusting mechanism 5 drives the bidirectional lead screw 52 to rotate, causing the support frame 53 to slide along the guide rod 58, so as to adjust the distance between the two sets of conveying mechanisms 6. Then, the PCB board is placed on the conveying mechanism 6, and the second motor 61 drives the synchronous roller 62 to drive the synchronous belt 63 to rotate. At this time, the negative pressure fan 7 draws out the air in the mounting frame 55, so that a negative pressure is formed in the synchronous belt 63. The PCB board is adsorbed and fixed through the suction holes 64 on the synchronous belt 63 and conveyed. At the same time, the blower 31 of the drying mechanism 3 draws in air through the dustproof mesh cover 32, and sends it into the air guide plate 35 through the air guide pipe 33 and the connecting pipe 34. After the heating wire 38 heats the air, it is blown bidirectionally onto the PCB board through the air outlet 37 for drying, which speeds up the drying speed and achieves efficient drying of PCB boards of different specifications, improving practicality.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PCB board drying device for liquid crystal displays, characterized in that, include: Drying box (1), and adjusting mechanism (5) installed inside the drying box (1). The adjusting mechanism (5) is symmetrically equipped with conveying mechanism (6) for conveying PCB boards. The distance between the two sets of conveying mechanisms (6) is adjusted by adjusting mechanism (5) to realize the conveying of PCB boards of different specifications. The inner cavity of the drying box (1) is equipped with a drying mechanism (3) for blowing air to dry the PCB board, and the drying mechanism (3) realizes bidirectional air blowing to dry the PCB board.

2. The PCB board drying device for a liquid crystal display screen according to claim 1, characterized in that: The drying mechanism (3) includes two sets of air guide plates (35) symmetrically installed in the inner cavity of the drying box (1). Each set of air guide plates (35) has multiple sets of air outlets (37) on one side of each side, and each set of air outlets (37) is provided with a filter screen. The inner cavity of the air guide plate (35) is provided with multiple sets of heating wires (38).

3. The PCB board drying device for a liquid crystal display screen according to claim 2, characterized in that: The drying mechanism (3) also includes a blower (31) installed on the upper surface of the drying box (1). The blower (31) is equipped with a dustproof mesh cover (32) at the air inlet end and an air guide pipe (33) at the air outlet end. Both sets of air guide plates (35) are equipped with connecting pipes (34) that communicate with the air guide pipes (33). Both sides of the two sets of air guide plates (35) are equipped with fixing rods (36) that are fixed to the inner wall of the drying box (1).

4. The PCB board drying device for a liquid crystal display screen according to claim 3, characterized in that: The adjustment mechanism (5) includes a bidirectional lead screw (52) and support frames (53) set at both ends of the bidirectional lead screw (52). Both ends of the two sets of support frames (53) on opposite sides are provided with connecting cylinders (54), and the ends of the connecting cylinders (54) are fixedly connected with mounting frames (55) for the conveying mechanism (6) to be installed. One end of the bidirectional lead screw (52) passes through the drying box (1) and is driven by the first motor (51).

5. The PCB board drying device for a liquid crystal display screen according to claim 4, characterized in that: Limiting beams (57) are fixedly connected to both sides of the inner cavity of the mounting frame (55), and multiple sets of guide rods (58) are fixedly connected to the inner cavity of the drying box (1). Both sets of support frames (53) are slidably set on the multiple sets of guide rods (58).

6. The PCB board drying device for a liquid crystal display screen according to claim 5, characterized in that: The conveying mechanism (6) includes synchronous rollers (62) rotatably mounted at both ends inside the mounting frame (55), and a synchronous belt (63) is provided between the two sets of synchronous rollers (62). The inner wall of the synchronous belt (63) abuts against multiple sets of limiting beams (57). Multiple sets of suction holes (64) are opened on the outer side of the synchronous belt (63). The shaft end of one set of synchronous rollers (62) passes through the support frame (53) and is driven by a second motor (61). A protruding beam (56) is provided at the upper end of the mounting frame (55).

7. A PCB board drying device for a liquid crystal display screen according to claim 6, characterized in that: A control panel (2) is provided on one side of the drying box (1), and a negative pressure fan (7) is provided on the opposite side of the two sets of mounting frames (55). A corrugated pipe (8) is provided at the air outlet of the negative pressure fan (7). Air outlet holes (37) communicating with the corrugated pipe (8) are opened on both sides of the drying box (1). Inlet and outlet holes (4) are opened on the other two sides of the drying box (1).

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