Universal automatic plate cleaning machine for cleaning PCBA (Printed Circuit Board Assembly) plate

Abstract

The utility model relates to a universal automatic board washing machine for washing PCBA boards, which comprises a washing area and a conveying mechanism for conveying the PCBA boards to the washing area, the conveying mechanism comprises two parallel annular conveying belts for driving the PCBA boards to move and driving devices for driving the annular conveying belts to rotate respectively, and the universal automatic board washing machine further comprises a cleaning mechanism arranged at the front end of the conveying mechanism and used for cleaning the PCBA boards. The roller brush is driven by the driving device and supports and pushes the PCBA board to enter the annular conveying belt, and compared with a traditional mode that the PCBA board is conveyed independently through the annular conveying belt, the problems of board clamping, deformation and the like are avoided for customization requirements, especially for input of large and heavy PCBA boards.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic production, specifically to the technical field of general-purpose automatic PCB washing machines for washing PCBA boards. Background Art

[0002] With the development of automation, the cleaning of PCBA boards is currently replaced by automated equipment instead of manual board washing, with relatively good results and high efficiency, and is widely used in the PCBA industry.

[0003] For example, Chinese Patent CN218394874U, a full-automatic cleaning device for PCBA boards, discloses an automatic production solution including a cleaning area at the upper end of a frame, a cleaning agent tank provided in the cleaning area, and a conveying mechanism provided above the cleaning area.

[0004] Such a mechanism can effectively complete the cleaning work of specified PCBA boards. However, in the face of the customized requirements of different products, it is difficult to achieve good universality of the equipment. Especially for PCBA boards that are relatively large in size and heavy in weight, if no targeted debugging is carried out, they cannot enter the board washing machine, and there are problems such as board jamming and deformation, resulting in damage to the PCBA boards. Therefore, debugging is required every time the board is changed, and the debugging of this equipment is relatively difficult.

[0005] In response to this, there is a demand for the generalization of automatic cleaning machines for the automatic cleaning of PCBA boards with customized requirements. Summary of the Utility Model

[0006] The utility model overcomes the above-mentioned deficiencies in the technology and provides a general-purpose automatic PCB washing machine for washing PCBA boards, which improves the feeding of the automatic board washing machine and solves the problems of low universality of the equipment and high debugging difficulty when cleaning PCBA boards with customized requirements.

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

[0008] A general-purpose automatic PCB washing machine for washing PCBA boards includes a cleaning area and a conveying mechanism for conveying PCBA boards to the cleaning area. The conveying mechanism includes two parallel annular conveyor belts for driving the movement of PCBA boards and driving devices for respectively driving the rotation of the annular conveyor belts;

[0009] It also includes a roller brush provided at the front end of the conveying mechanism, which is driven by the driving device and supports and pushes the PCBA board into the annular conveyor belt.

[0010] Compared with the existing technology, this case uses a roller brush set at the front end of the conveying mechanism to push and support the PCBA board into the cleaning area. Compared with the traditional ring conveyor belt for single conveying, it can meet customized needs, especially the input of larger and heavier PCBA boards, avoiding problems such as card jamming and deformation.

[0011] Moreover, the roller brush in this case utilizes the driving device of the conveying mechanism, and there is no need to add a separate power motor. It can achieve the pushing operation as described above, saving costs while ensuring the synchronization of the movement of the PCBA board, and achieving the beneficial effect of low cost and high quality.

[0012] In a preferred embodiment, there are two roller brushes, which are respectively arranged on the inner sides of two parallel endless conveyor belts.

[0013] In a preferred embodiment, the roller brush is a width-adjustable roller brush that can handle customized panels of different sizes and weights.

[0014] Preferably, the roller brush is a sisal roller brush, which is anti-static and prevents damage to the PCBA board.

[0015] In a preferred embodiment, the driving device and the roller brush are driven by a gear transmission structure, which can ensure transmission efficiency and improve conveying accuracy.

[0016] Preferably, the gear transmission structure includes a driving wheel connected to the driving device and a driven wheel connected to the driving wheel, and the driven wheel is arranged on the inner side of two parallel endless conveyor belts. In a preferred embodiment, the driven wheel is a double-sided bearing supported gear.

[0017] In some embodiments, the driven wheel is fixed to the endless conveyor belt and / or guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a side view of the general-purpose automatic board washer used to clean PCBA boards in this case;

[0019] Figure 2 yes Figure 1 A partial enlarged view of the middle part;

[0020] Figure 3 This is the front view of the general-purpose automatic board washer used to clean PCBA boards in this case;

[0021] Figure 4 This is a top view of the general-purpose automatic board washer used to clean PCBA boards in this case;

[0022] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0023] The features of the present utility model and other related features will be further described in detail through the following embodiments for the understanding of those skilled in the same industry:

[0024] Please refer to Figure 1 and Figure 3 , Figure 4 , such as the overall schematic diagram of the general-purpose automatic circuit board washer for cleaning PCBA boards in this case. The general-purpose automatic circuit board washer for cleaning PCBA boards in this case includes a cleaning area 100. The cleaning of the PCBA board can be carried out by using a dry cleaning drum type or by using a cleaning agent. In this regard, no specific limitation is made in this case. The general-purpose automatic circuit board washer for cleaning PCBA boards in this case further includes a conveying mechanism 200 for conveying the PCBA board to the cleaning area 100. Please refer to Figure 2 in combination. The conveying mechanism 200 mainly includes two parallel endless conveyor belts 210 for driving the movement of the PCBA board and a driving device 220 for driving the rotation of the endless conveyor belts 210 respectively. During specific operation, the hooks 211 of the endless conveyor belt 210 drive the PCBA board or the fixture for fixing the PCBA board to be conveyed from the guide rail 300 of its front-end equipment to the cleaning area 100.

[0025] At this time, if only the hooks 211 of the endless conveyor belt 210 drive, when facing customized requirements, especially when inputting larger and heavier PCBA boards, there will be potential problems such as board jamming and deformation.

[0026] Therefore, the general-purpose automatic circuit board washer for cleaning PCBA boards in this case further includes a roller brush 230 provided at the front end of the conveying mechanism 200, that is, in the direction connecting with the guide rail 300, for pushing the PCBA board into the cleaning area 100. Using the roller brush 230 to push and support the PCBA board into the cleaning area 100, compared with the single conveying of the traditional endless conveyor belt 210, for customized requirements, especially for the input of larger and heavier PCBA boards, problems such as board jamming and deformation are avoided.

[0027] In some embodiments, there are two roller brushes 230, which are respectively arranged inside the two parallel endless conveyor belts 210. And the widths of the two roller brushes 230 are of adjustable design, which can cope with customized boards of different sizes and weights. As shown in the attached drawings of the embodiments in this case, a width size of one large and one small can be adopted, but this is only one of the preferred implementation cases, and this case should not be limited by it.

[0028] For the selection of the roller brush 230, a sisal roller brush is preferably used. In addition to its strong and durable fibers that are not easily broken, the sisal material has a certain antistatic property, and it is not easy to adsorb dust during use, reducing the static electricity trouble during the cleaning process, and is suitable for use in environments where static electricity is easily generated or antistatic is required. Therefore, in this case, a sisal roller brush is preferably used, which can resist static electricity and prevent damage to the PCBA board.

[0029] Meanwhile, the driving of the roller brush 230 utilizes the driving device 220 of the conveying mechanism 200. In this way, without the need to newly add a power motor separately, the pushing operation as described above can be achieved, which can save costs and ensure the synchronism of the movement of the PCBA board, achieving the beneficial effects of low cost and high quality.

[0030] In this regard, since the endless conveyor belt 210 rotates horizontally, when applying its driving device 220 to the roller brush 230, a vertical shaft transmission is required. The vertical shaft transmission can be in the forms of gear transmission, chain transmission, belt transmission, etc. In this embodiment, a gear transmission structure is preferably used, which can ensure a high-precision transmission ratio, ensure the transmission efficiency, and improve the conveying accuracy.

[0031] Because the pushing operation of the roller brush 230 and the hook 211 of the endless conveyor belt 210 are cooperative operations and share a driving force, the accuracy of power transmission is particularly important.

[0032] Therefore, as a preferred solution for transmission, the gear transmission structure includes a driving wheel 241 connected to the driving device 220 and a driven wheel 240 connected to the driving wheel 241. The driven wheel 240 of the gear transmission is arranged inside the two parallel endless conveyor belts 210, closer to the roller brush 230 of the load. At this time, the driving wheel 241 is connected to the driving device 220. Further, the driven wheel 240 is a double-sided bearing-supported gear. The driven wheel 240 is fixed on the endless conveyor belt 210 and the guide rail 300 of its front-end equipment, and spans both ends at the same time, which can ensure the excessive stability of the PCBA board. Of course, the driven wheel 240 can also be fixed to the endless conveyor belt 210 or the guide rail 300 alone to achieve the function.

[0033] The driving device 220 will be described in detail below. Please refer to Figures 3 to 5 The magenta-colored description line in the figure represents the internal structure of the equipment. For the sake of distinction and to avoid confusion, different expressions are used. Here, the driving device 220 is the driving for the rotation of the roller brush 230 as described above.

[0034] Specifically, the driving device 220 is a device for rotating the endless conveyor belt 210. In a preferred example, it includes a transmission chain 260, a power gear 270 for rotating the transmission chain 260, and a power motor 280 for providing the rotational energy. When there are two endless conveyor belts 210, please specifically refer to Figure 4 The lateral wheel 281 can be borrowed to provide power to the power gears 270 of the two endless conveyor belts 210.

[0035] Furthermore, the power motor 280 is arranged at the rear end, presenting a design with the front and rear ends separated from the roller brush 230 arranged at the front end, which can make the conveying power of the entire annular conveyor belt 210 more balanced and the conveying stable.

[0036] As described above, the present case protects a general-purpose automatic circuit board washer for cleaning PCBA boards, and all technical solutions identical or similar to those of the present case should be regarded as falling within the protection scope of the present case.

Claims

1. A general-purpose automatic circuit board washer for cleaning PCBA boards, characterized in that, The invention comprises a cleaning area (100), a conveying mechanism (200) for conveying PCBA boards to the cleaning area (100), wherein the conveying mechanism (200) comprises two parallel annular conveyor belts (210) for driving the PCBA boards to move, and a driving device (220) for respectively driving the annular conveyor belts (210) to rotate; It also includes a roller brush (230) arranged at the front end of the conveying mechanism (200), driven by the driving device (220) and used to lift and push the PCBA board into the annular conveyor belt (210).

2. The general-purpose automatic circuit board washing machine for cleaning PCBA boards according to claim 1, characterized in that, There are two roller brushes (230), which are respectively arranged on the inner sides of two parallel annular conveyor belts (210).

3. The general-purpose automatic circuit board washer for cleaning PCBA boards according to claim 2, characterized in that, The roller brush (230) is a width-adjustable roller brush.

4. The general-purpose automatic circuit board washer for cleaning PCBA boards according to claim 1, wherein The roller brush (230) is a sisal roller brush.

5. A general-purpose automatic circuit board washer for cleaning a PCBA board according to any one of claims 1 to 4, characterized in that, The driving device (220) and the roller brush (230) are driven by a gear transmission structure.

6. The general-purpose automatic circuit board washer for cleaning PCBA boards according to claim 5, characterized in that, The gear transmission structure comprises a driving wheel connected to a driving device (220) and a driven wheel (240) connected to the driving wheel, wherein the driven wheel (240) is arranged on the inner side of two parallel annular conveyor belts (210).

7. The general-purpose automatic circuit board washer for cleaning PCBA boards according to claim 6, characterized in that, The driven wheel (240) is a gear supported by bearings on both sides.

8. A universal automatic board washer for cleaning PCBA boards as claimed in claim 6, characterized in that: The driven wheel (240) is fixed to the endless conveyor belt (210) and / or the guide rail (300).

9. The general-purpose automatic circuit board washer for cleaning PCBA boards according to claim 1, characterized in that, The endless conveyor belt (210) is provided with a hook (211).

Images