PCB side face spraying jig

Abstract

The utility model discloses a PCB side face spraying jig which comprises a main board, the main board is provided with a working area used for containing a PCB, the working area is provided with a limiting structure used for fixing the PCB on the working area, and the side of the working area is provided with an air blowing outlet. According to the PCB side face spraying jig, the PCB is fixed to the working area of the mainboard through the limiting structure, air is blown to the outer side of the PCB through the air blowing outlet, so that the movement track of part of printing ink is changed, and the printing ink is difficult to spray to the bottom function area of the PCB.

Description

Technical Field

[0001] This utility model relates to the field of PCB manufacturing technology, and in particular to a PCB side coating fixture. Background Technology

[0002] PCB manufacturing requires the application of inks, such as circuit inks to transfer electronic circuit patterns onto the PCB, solder resist inks to cover and protect precision electronic circuits, and character inks for marking the PCB surface. Existing PCB coating fixtures, after fixing the PCB, can easily result in ink being sprayed onto the functional areas on the bottom of the PCB during the side-spraying process. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a PCB side spraying fixture that makes it difficult for ink to be sprayed onto the bottom functional area of ​​the PCB.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a PCB side spraying fixture, including a motherboard, the motherboard having a working area for placing the PCB, the working area matching the PCB, a limiting structure for fixing the PCB on the working area, and an air outlet on the side of the working area.

[0005] Furthermore, the motherboard is provided with airflow channels and air blowing holes. The airflow channels are connected to the openings on the outer wall of the motherboard to form air blowing outlets, and the air blowing holes are connected to the airflow channels.

[0006] Furthermore, the airflow channels are annular, surrounding the working area.

[0007] Furthermore, the width of the air outlet is less than the maximum width of the cross-section of the airflow channel.

[0008] Furthermore, the motherboard also has a guide channel, which is located inside the airflow groove and connected to the airflow groove. The air blowing hole is connected to the side of the airflow groove through the guide channel.

[0009] Furthermore, the extension direction of the guide channel is inclined relative to the normal direction at the point where the airflow channel connects to the guide channel.

[0010] Furthermore, the guide passage connects to the work area.

[0011] Furthermore, the limiting structure can be a suction cup, a claw, a gripper, or a movable pressure block.

[0012] Furthermore, at least one positioning hole is provided on the motherboard.

[0013] Furthermore, the working area is equipped with a clearance structure to avoid the functional areas of the PCB.

[0014] The beneficial effects of this utility model are as follows: This PCB side spraying fixture uses a limiting structure to fix the PCB on the working area of ​​the motherboard, and uses an air outlet to blow air on the outside of the PCB to change the movement trajectory of some ink, making it difficult for the ink to be sprayed onto the bottom functional area of ​​the PCB. Attached Figure Description

[0015] Figure 1 This is a top view of the PCB side spraying fixture according to Embodiment 1 of this utility model;

[0016] Figure 2 This is a cross-sectional view of the PCB side spraying fixture according to Embodiment 1 of this utility model.

[0017] Label Explanation:

[0018] 1. Mainboard; 11. Working area; 12. Air outlet; 13. Positioning hole;

[0019] 2. Limiting structure;

[0020] 3. Airflow channel;

[0021] 4. Air inlet;

[0022] 5. Guiding passage. Detailed Implementation

[0023] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0024] Please refer to Figure 1 and Figure 2 The PCB side spraying fixture includes a motherboard 1. The motherboard 1 has a working area 11 for placing the PCB. The working area 11 matches the PCB. The working area 11 is provided with a limiting structure 2 for fixing the PCB on the working area 11. An air outlet 12 is provided on the outside of the working area 11.

[0025] As can be seen from the above description, the beneficial effects of this utility model are as follows: This PCB side spraying fixture uses the limiting structure 2 to fix the PCB on the working area 11 of the motherboard 1, and uses the air outlet 12 to blow air on the outside of the PCB to change the movement trajectory of some ink, making it difficult for the ink to be sprayed onto the bottom functional area of ​​the PCB.

[0026] Furthermore, the motherboard 1 is provided with an airflow groove 3 and an air blowing hole 4. The airflow groove 3 is connected to the opening on the outer wall of the motherboard 1 to form an air blowing outlet 12, and the air blowing hole 4 is connected to the airflow groove 3.

[0027] As described above, the airflow from the air hole 4 can form a relatively long air wall after being blown out through the air outlet 12 of the airflow groove 3, thereby increasing the shielding range on the side of the PCB.

[0028] In other possible implementations, it is also feasible to have the air hole 4 directly connected to the outer wall surface of the motherboard 1, and to have the opening of the air hole 4 connected to the outer wall surface of the motherboard 1 to form the air outlet 12.

[0029] Furthermore, the airflow groove 3 is annular and surrounds the working area 11.

[0030] As described above, the air wall blown out by the annular airflow channel 3 can completely cover the side of the PCB, so that the spraying equipment can spray ink onto the PCB from either side.

[0031] In other possible implementations, the airflow channel 3 is elongated, and the number of airflow channels 3 is at least one. It is also feasible for the airflow wall blown out by each airflow channel 3 to be used to shield a part of the side of the PCB.

[0032] Furthermore, the width of the air outlet 12 is less than the maximum width of the cross-section of the airflow channel 3.

[0033] As described above, the constricted air outlet 12 can enhance the intensity of the airflow, which can more forcefully deflect the movement of the ink, thereby enabling the spraying equipment to spray ink with greater power and improve spraying efficiency.

[0034] In other possible implementations, it is also feasible to make the width of the air outlet 12 the maximum width of the cross-section of the airflow groove 3 so as to facilitate the machining of the airflow groove 3 on the base plate.

[0035] Furthermore, the motherboard 1 is also provided with a guide channel 5, which is located inside the airflow groove 3 and connected to the airflow groove 3. The air blowing hole 4 is connected to the side of the airflow groove 3 through the guide channel 5.

[0036] As can be seen from the above description, placing the air inlet 4 inside the airflow groove 3 allows the external air pipe connected to the air inlet 4 to move closer to the inside of the fixture, reducing the risk of the external air pipe getting caught on external objects and causing damage or even breakage.

[0037] In other possible implementations, it is also feasible to have the air hole 4 directly connected to the inner side of the airflow groove 3 to facilitate the processing of the motherboard 1.

[0038] Furthermore, the extension direction of the guide channel 5 is inclined relative to the normal direction at the point where the airflow groove 3 connects to the guide channel 5.

[0039] As described above, the airflow entering the airflow groove 3 from the guide channel 5 is inclined relative to the other side of the airflow groove 3, thereby avoiding the airflow from vertically impacting the other side of the airflow groove 3 and causing most of the airflow to concentrate at the connection between the guide channel 5 and the airflow groove 3 and be ejected. This is beneficial for all areas of the air wall blown out by the airflow groove 3 to stably keep the ink away from the bottom functional area of ​​the PCB.

[0040] In other possible implementations, it is also feasible to shorten the guide channel 5 and reduce the processing difficulty by extending the guide channel 5 perpendicular to the normal direction at which the airflow groove 3 connects to the guide channel 5.

[0041] Furthermore, guide channel 5 connects to work area 11.

[0042] As can be seen from the above description, the fact that the boot channel 5 is exposed on the surface of the motherboard 1 makes it easy to process the boot channel 5 on the motherboard 1, which helps to reduce the manufacturing difficulty of the motherboard 1.

[0043] In other possible implementations, it is also feasible to have the guide channel 5 as a hole-like structure completely hidden inside the motherboard 1, so as to avoid the airflow of the guide channel 5 impacting the PCB and causing the PCB to accidentally detach from the motherboard 1.

[0044] Furthermore, the limiting structure 2 can be a suction cup, a claw, a gripper, or a movable pressure block.

[0045] As can be seen from the above description, the limiting structure 2 can be selected in different types according to actual use needs or production conditions.

[0046] Furthermore, at least one positioning hole 13 is provided on the motherboard 1.

[0047] As can be seen from the above description, the motherboard 1 can be fixed through the positioning hole 13.

[0048] In other possible implementations, it is also feasible to provide a protruding structure, a snap-fit, or a magnetic component on the motherboard 1 for fixation.

[0049] Furthermore, the working area 11 is provided with a clearance structure for avoiding the functional areas of the PCB.

[0050] As can be seen from the above description, setting a clearance structure can make the PCB close to the working area 11 of the motherboard 1, avoiding gaps between the PCB and the working area 11 caused by the limitation of the bottom functional area of ​​the PCB, and further preventing ink from contacting the bottom functional area of ​​the PCB; optionally, the clearance structure is a clearance hole, a clearance window or a clearance groove.

[0051] Please refer to Figure 1 and Figure 2The first embodiment of this utility model is: a PCB side spraying fixture, including a motherboard 1, the motherboard 1 having a working area 11 for placing the PCB, the working area 11 matching the PCB, the working area 11 having a limiting structure 2 for fixing the PCB on the working area 11, and an air outlet 12 on the outside of the working area 11.

[0052] In this embodiment, the main board 1 is rectangular, and the working area 11 is a portion of the surface of the main board 1; the limiting structure 2 is a suction cup. In other embodiments, the main board 1 may be circular or other polygonal; the limiting structure 2 may be a claw, gripper, or pressure block.

[0053] In this embodiment, the motherboard 1 is provided with an airflow groove 3 and an air blowing hole 4. The airflow groove 3 connects to the opening on the outer wall of the motherboard 1 to form an air blowing outlet 12, and the air blowing hole 4 connects to the airflow groove 3. In other embodiments, it is also feasible for the air blowing hole 4 to connect to the outer wall of the motherboard 1 and for the air blowing hole 4 to connect to the opening on the outer wall of the motherboard 1 to form an air blowing outlet 12.

[0054] In this embodiment, the airflow groove 3 is rectangular and ring-shaped, formed by four elongated side grooves connected end to end, and the airflow groove 3 surrounds the working area 11. In other embodiments, the airflow groove 3 is elongated, and it is also feasible to have at least one airflow groove 3.

[0055] In this embodiment, the cross-section of the airflow groove 3 is rectangular. In other embodiments, the cross-section of the airflow groove 3 can be triangular or arc-shaped; or, the width of the air outlet 12 is smaller than the maximum width of the cross-section of the airflow groove 3, such as making the cross-section of the airflow groove 3 into a dovetail shape, etc.

[0056] The motherboard 1 also has guide channels 5, which are located inside the airflow groove 3 and connected to it. Air holes 4 are connected to the side of the airflow groove 3 via the guide channels 5. Specifically, each side groove of the airflow groove 3 is provided with one air hole 4 and two guide channels 5, resulting in a total of four air holes 4 and eight guide channels 5. In other embodiments, the number of air holes 4 can be one, two, three, or more; the number of guide channels 5 can also be less than eight or more than eight.

[0057] The extension direction of the guide channel 5 is inclined relative to the normal direction at which the airflow groove 3 connects to the guide channel 5. In other embodiments, it is also feasible for the extension direction of the guide channel 5 to be perpendicular to the tangential direction at which the airflow groove 3 connects to the guide channel 5.

[0058] To facilitate the processing of the guide channel 5, the guide channel 5 connects to the working area 11. In use, the PCB is pressed against the working area 11 and the opening of the guide channel 5 connecting to the working area 11 is closed, so that the airflow can flow smoothly through the guide channel 5 to the airflow slot 3.

[0059] To facilitate the fixing of the spray coating fixture on the side of the PCB, the main board 1 has at least four positioning holes 13. In other embodiments, the number of positioning holes 13 may be at least one.

[0060] In other embodiments, the working area 11 may be provided with a clearance structure to avoid the functional area of ​​the PCB, so that the PCB is close to the working area 11 of the motherboard 1, avoiding a large gap between the PCB and the working area 11 due to the limitation of the functional area at the bottom of the PCB, and further preventing ink from contacting the functional area at the bottom of the PCB.

[0061] In summary, the PCB side spraying fixture provided by this utility model uses a limiting structure to fix the PCB on the working area of ​​the motherboard, and uses an air outlet to blow air on the outside of the PCB to change the movement trajectory of some ink, making it difficult for the ink to be sprayed onto the bottom functional area of ​​the PCB.

[0062] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A PCB side coating fixture, characterized in that, Includes a motherboard, the motherboard having a working area for mounting a PCB, the working area matching the PCB, the working area having a limiting structure for fixing the PCB on the working area, and an air outlet on the side of the working area.

2. The PCB side coating fixture according to claim 1, characterized in that, The motherboard is provided with an airflow groove and an air blowing hole. The airflow groove is connected to an opening on the outer wall of the motherboard to form the air blowing outlet, and the air blowing hole is connected to the airflow groove.

3. The PCB side coating fixture according to claim 2, characterized in that, The airflow channel is annular and surrounds the working area.

4. The PCB side coating fixture according to claim 2, characterized in that, The width of the air outlet is less than the maximum width of the cross-section of the airflow channel.

5. The PCB side coating fixture according to claim 2, characterized in that, The motherboard also has a guide channel, which is located inside the airflow groove and connected to the airflow groove. The air blowing hole is connected to the side of the airflow groove through the guide channel.

6. The PCB side coating fixture according to claim 5, characterized in that, The extension direction of the guide channel is inclined relative to the normal direction at the point where the airflow groove connects to the guide channel.

7. The PCB side coating fixture according to claim 5, characterized in that, The guide channel connects to the working area.

8. The PCB side coating fixture according to claim 1, characterized in that, The limiting structure is a suction cup, a claw, a clamp, or a movable pressure block.

9. The PCB side coating fixture according to claim 1, characterized in that, The motherboard has at least one positioning hole.

10. The PCB side coating fixture according to claim 1, characterized in that, The working area is equipped with a clearance structure for avoiding the functional areas of the PCB.

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