Cold air blow-drying device for circuit board

Abstract

The utility model discloses a cold air blow-drying device for a circuit board, and aims to provide the cold air blow-drying device for the circuit board, which can improve the practicability and the air drying efficiency. The device comprises a rack, a feeding mechanism, a water absorption mechanism and a cold air mechanism are connected to the rack from one side to the other side, the feeding mechanism is elastically connected with a feeding clamp and movably connected with the rack, the water absorption mechanism is rotationally connected with a water absorption roller, and the cold air mechanism is rotationally connected with an air outlet box. The device has the beneficial effects that the device is simplified, and the operation efficiency is improved; the practicability and automation degree of the device are improved; the blow-drying efficiency is improved; the structural stability and the operation smoothness are improved, and the water removal efficiency is improved; the circuit board is protected; and the blow-drying comprehensiveness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a cold air drying device for circuit boards. Background Technique

[0002] During the production process of circuit boards, after the circuit boards undergo chemical reactions and are washed with water, they need to be dried in a timely manner to avoid oxidation of the circuit boards.

[0003] Chinese Patent Grant Publication No.: CN 219223183 U, Grant Publication Date: June 20, 2023. The utility model relates to a cold air drying system for circuit boards, including a first conveying component, a second conveying component, two air knives, a bracket, a fan, and a cooling device. The first conveying component and the second conveying component are arranged parallel to each other, and the first conveying component and the second conveying component are respectively used to synchronously convey a fixture with a circuit board from the bottom and top of the fixture; the air inlet of the fan is connected to the cooling device, and the air outlet is connected to the two air knives; the two air knives are both connected to the bracket, and the two air knives are respectively arranged on both sides of the conveying path of the fixture to blow air to the circuit board from both sides of the circuit board; the air knives can rotate relative to the bracket, and a locking mechanism is arranged on the bracket to lock or release the air knives on the bracket. The disadvantages of this technical solution are as follows: 1. The device cannot perform dehumidification pretreatment on the circuit board, resulting in the need for more time for the air knives to dry, reducing the drying efficiency; 2. The fixing method of the conveying component for the circuit board is complex, and the size specifications of the circuit board are limited, reducing the applicability and practicality.

[0004] In summary: The device has the deficiencies of low practicality and drying efficiency. Summary of the Utility Model

[0005] The utility model is to overcome the deficiencies of low practicality and drying efficiency in the existing technology, and provides a cold air drying device for circuit boards that improves practicality and drying efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A cold air drying device for circuit boards includes a frame. From one side to the other side of the frame, a feeding mechanism, a water absorption mechanism, and a cold air mechanism are connected. The feeding mechanism is elastically connected with a feeding clamp, the feeding mechanism is movably connected to the frame, the water absorption mechanism is rotatably connected with a water absorption roller, and the cold air mechanism is rotatably connected with an air outlet box.

[0008] A feeding mechanism is connected to the frame to clamp and fix the circuit board through a feeding clamp. At the same time, the feeding clamp is elastically connected to the feeding mechanism, making the device applicable to circuit boards of different specifications and sizes. The fixing method is simple, improving the adaptability of the device. The feeding mechanism is horizontally placed, so that the residual water on the surface of the horizontally placed circuit board is evenly distributed, facilitating uniform dehumidification. A water absorption mechanism is connected to the frame and is used to connect a water absorption roller on one side of the feeding mechanism, so that the feeding mechanism moving on the frame passes through the water absorption mechanism, and the rotatable water absorption roller can smoothly absorb the water on the surface of the circuit board initially, improving the water removal efficiency and preventing large residual water droplets on the circuit board. A cold air mechanism is connected to the frame and is placed on one side of the water absorption mechanism, so that the circuit board after initial water removal is blown and dehumidified by the air outlet box. The air outlet box that rotates and blows realizes the efficient air drying and blowing of the small water droplets remaining on the surface. The water absorption mechanism, the water absorption roller, the cold air mechanism and the air outlet box are arranged in an up-and-down mirror image on the frame to realize the double-sided water treatment of the circuit board at the same time. It achieves the effects of simplifying the device, improving the operation efficiency and the practicality of the device, and further realizing the improvement of the drying efficiency.

[0009] Preferably, the frame is equipped with a linear guide rail. The feeding mechanism includes a moving frame. The frame is provided with a sliding track one and a sliding guide rail two. The moving frame is connected with a slider and a guide block. The slider is inserted into the sliding track one, the slider is connected with the linear guide rail, the feeding clamp is inserted into the moving frame, the feeding clamp is sleeved with a return spring, the sliding guide rail two is provided with a guide groove, and the guide block is slidably connected with the guide groove. A linear guide rail is installed on the frame. The moving frame in the feeding mechanism extends out of the sliding track one through the slider and is connected with the linear guide rail, so that the linear guide rail drives the moving frame to move stably and reciprocally on the frame. The feeding clamp is sleeved with a return spring and inserted into the moving frame to clamp and fix the circuit board in the moving frame. The slider is connected to one side of the moving frame, and the guide block is connected to the other side of the moving frame and inserted into the sliding guide rail two and inserted into the guide groove, so that the moving frame can move stably and parallelly under drive and prevent the moving frame from turning and disengaging from the frame. It achieves the effect of improving the structural stability.

[0010] Preferably, the feeding clamp includes a straight rod, a fixing block and a buffer block. The moving frame is provided with mounting holes, and there are several mounting holes. The straight rod is inserted into the mounting holes. One end of the straight rod is connected with the fixing block, the other end of the straight rod is connected with the buffer block, the return spring is sleeved on the straight rod, one end of the return spring is connected with the fixing block, and the other end of the return spring is connected with the moving frame. In the feeding clamp, the straight rod passes through the mounting holes and is inserted into the moving frame. The several mounting holes enable the straight rod to be connected and fixed to the circuit board through multiple groups of settings. One end of the straight rod placed inside the moving frame is connected with a buffer block to buffer the contact between the structure and the circuit board, improving the stability and protecting the circuit board. At the same time, one end of the straight rod placed outside the moving frame is connected with a fixing block, facilitating the picking and clamping of the feeding clamp. The return spring is connected between the fixing block and the moving frame to provide a stable clamping force for the feeding clamp. It achieves the effects of improving the structural connection stability and facilitating operation.

[0011] Preferably, the water absorption mechanism includes a first bracket and a rotating rod. The first bracket is connected to the frame. The first bracket is provided with a rotating hole, in which a first bearing and a second bearing are installed. One end of the rotating rod is connected to the first bearing, and the other end of the rotating rod passes through the water absorption roller and is connected to the second bearing. In the water absorption mechanism, the first bracket is connected to the frame to support the rotating rod connected by the first bearing and the second bearing. The first bearing and the second bearing improve the rotation smoothness of the rotating rod, so that the water absorption roller is more smooth when contacting the circuit board and the circuit board moves, preventing the surface structure of the circuit board from being affected. The effects of smooth structure operation, improved water removal efficiency and protection of the circuit board are achieved.

[0012] Preferably, the cold air mechanism includes a second bracket and a top rod. The second bracket is connected to the frame. The top rod is movably connected to the second bracket. The air outlet box is connected with a fixed seat and an air inlet pipe. The air inlet pipe is externally connected to an air outlet device. The fixed seat is rotatably connected to the second bracket. The air outlet box is provided with a ventilation cavity and air outlet holes. The air inlet pipe is communicated with the ventilation cavity, and the air outlet holes are communicated with the ventilation cavity. There are several air outlet holes. In the cold air mechanism, the second bracket is connected to the frame to support the air outlet box connected to the second bracket through the fixed seat. The air inlet pipe connected to the ventilation cavity is connected to the air outlet box. The air inlet pipe externally sends a ventilation device to increase cold air to the ventilation cavity. The cold air blows out from several air outlet holes to cool and dehumidify the surface of the circuit board. The rotating air outlet box extends the blowing time and increases the blowing angle. The effects of improving the structural connection stability, drying efficiency and comprehensiveness are achieved.

[0013] Preferably, the fixed seat is provided with a connecting rod, the second bracket is provided with a jack, the second bracket is connected with a telescopic mechanism, the telescopic mechanism is connected with a rack, one end of the connecting rod is connected to the fixed seat, the other end of the connecting rod passes through the jack and is connected with a gear disc, and the rack is meshed with the gear disc. The fixed seat is inserted into the jack of the second bracket through the connecting rod. The telescopic mechanism is installed on the second bracket. The telescopic mechanism is meshed with the gear disc on the connecting rod through the rack, so that the telescopic mechanism starts the rotation of the connecting rod, and then drives the rotation of the fixed seat and the air outlet box, realizing the effect of rotary drying. The effects of improving the degree of automation and efficiency are achieved.

[0014] The beneficial effects of the present utility model are: simplifying the device and improving the operation efficiency; improving the practicality and automation degree of the device; realizing the improvement of the drying efficiency; improving the structural stability, operation smoothness and water removal efficiency; protecting the circuit board; and improving the drying comprehensiveness. Description of the Drawings

[0015] Figure 1 is a perspective view of the present utility model;

[0016] Figure 2 is a cross-sectional view of the connection between the moving frame and the frame;

[0017] Figure 3 is a cross-sectional view of the connection between the water absorption roller and the first bracket;

[0018] Figure 4 It is a cross-sectional view of the connection between the fixed seat and the second bracket.

[0019] In the figure: 1. Frame, 2. Loading clamp, 3. Water absorption roller, 4. Air outlet box, 5. Linear guide rail, 6. Moving frame, 7. First sliding track, 8. Second sliding guide rail, 9. Slide block, 10. Guide block, 11. Return spring, 12. Guide groove, 13. Straight rod, 14. Fixed block, 15. Buffer block, 16. First bracket, 17. Rotating rod, 18. First bearing, 19. Second bearing, 20. Second bracket, 21. Tooth disc, 22. Fixed seat, 23. Air inlet pipe, 24. Ventilation cavity, 25. Air outlet hole, 26. Connecting rod, 27. Telescopic mechanism, 28. Rack, 29. Card slot. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0021] It should be noted that the terms used here are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0022] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components set forth in these embodiments do not limit the scope of the present application. For ease of description, spatial relative terms such as "upper", "lower", "left", "right", etc. are used in the embodiments to describe the relationship of one element or feature shown in the drawings relative to another element or feature. It should be understood that, in addition to the orientations shown in the drawings, the spatial terms are intended to include different orientations of the device during use or operation. For example, if the device in the drawings is inverted, the element described as being "lower" than other elements or features will be positioned "above" other elements or features. Thus, the exemplary term "lower" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly. At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, processes, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, processes, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is merely for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meanings, and thus, should not be construed as limiting the protection scope of the present application. Embodiment

[0024] As Figure 1 shown, a cold air drying device for a circuit board includes a frame 1. From one side to the other side of the frame 1, a loading mechanism, a water absorption mechanism, and a cold air mechanism are connected. The loading mechanism is elastically connected with a loading clip 2, the loading mechanism is movably connected to the frame 1, the water absorption mechanism is rotatably connected with a water absorption roller 3, and the cold air mechanism is rotatably connected with an air outlet box 4.

[0025] As Figure 1 、 2As shown in the figure, the frame 1 is equipped with linear guide rails 5. The feeding mechanism includes a moving frame 6. The frame 1 is provided with a sliding track 7 and a sliding guide rail 8. The moving frame 6 is connected with a slider 9 and a guide block 10. The slider 9 is inserted into the sliding track 7, and the slider 9 is connected with the linear guide rail 5. The feeding clamp 2 is inserted into the moving frame 6. The feeding clamp 2 is sleeved with a return spring 11. The sliding guide rail 8 is provided with a guide groove 12, and the guide block 10 is slidably connected with the guide groove 12. The feeding clamp 2 includes a straight rod 13, a fixed block 14 and a buffer block 15. The moving frame 6 is provided with mounting holes, and there are several mounting holes. The straight rod 13 is inserted into the mounting holes. One end of the straight rod 13 is connected with the fixed block 14, and the other end of the straight rod 13 is connected with the buffer block 15. The return spring 11 is sleeved on the straight rod 13. One end of the return spring 11 is connected with the fixed block 14, and the other end of the return spring 11 is connected with the moving frame 6.

[0026] As Figure 1 , 3 shown in the figure, the water absorption mechanism includes a support 16 and a rotating rod 17. The support 16 is connected with the frame 1. The support 16 is provided with a rotating hole, and a bearing 18 and a bearing 19 are installed in the rotating hole. One end of the rotating rod 17 is connected with the bearing 18, and the other end of the rotating rod 17 passes through the water absorption roller 3 and is connected with the bearing 19.

[0027] As Figure 1 , 4 shown in the figure, the cold air mechanism includes a support 20. The support 20 is connected with the frame 1. The air outlet box 4 is connected with a fixed seat 22 and an air inlet pipe 23. The air inlet pipe 23 is externally connected to an air outlet device. The fixed seat 22 is rotatably connected with the support 20. The air outlet box 4 is provided with a ventilation cavity 24 and air outlet holes 25. The air inlet pipe 23 is communicated with the ventilation cavity 24, and the air outlet holes 25 are communicated with the ventilation cavity 24. There are several air outlet holes 25. The fixed seat 22 is provided with a connecting rod 26. The support 20 is provided with a jack. The support 20 is connected with a telescopic mechanism 27. The telescopic mechanism 27 is connected with a rack 28. One end of the connecting rod 26 is connected with the fixed seat 22, and the other end of the connecting rod 26 passes through the jack and is connected with a gear disk 21. The rack 28 is meshed with the gear disk 21.

[0028] As Figures 1-4 shown: Three feeding clamps 2 are respectively connected to the front and rear sides of the moving frame 6 in the moving direction to ensure the stability of clamping.

[0029] The buffer block 15 is made of rubber material, which improves the friction force while buffering the contact surface. The end face of the buffer block 15 is provided with a card slot 29. When clamping the circuit board, the side of the circuit board can be clamped into the card slot 29 to further improve the clamping stability and prevent the circuit board from vertically displacing on the feeding clamp 2.

[0030] The water absorption roller 3 is a cylindrical sponge body, which is convenient for quickly absorbing water and performing preliminary surface water removal on the circuit board.

[0031] During use: Insert the circuit board between the loading clamps 2. The circuit board is clamped under the action of being inserted into the card slot 29 and the restoring spring 11. Start the linear guide 5, so that the slider 9 connected to the linear guide 5 moves on the first sliding track 7, and the guide block 10 at the other end moves synchronously in the second sliding guide 8. The circuit board passes between the two water-absorbing rollers 3. The sponge bodies of the water-absorbing rollers 3 rotate under the support of the rotating rods 17 to absorb water from the surface of the circuit board. The circuit board gradually passes over the first bracket 16. Start the telescopic mechanism 27 (using a cylinder) and the air inlet pipe 23 of the external air supply device, so that the cold air blows out from the air outlet holes 25. The air outlet box 4 blows on the moving circuit board during rotation. The two sides of the circuit board are efficiently air-dried through water absorption and air-drying.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cold air drying device for a circuit board, characterized in that, It includes a frame (1), and a feeding mechanism, a water absorption mechanism and a cold air mechanism are connected from one side to the other side of the frame (1). The feeding mechanism is elastically connected with a feeding clamp (2). The feeding mechanism is movably connected with the frame (1). The water absorption mechanism is rotatably connected with a water absorption roller (3). The cold air mechanism is rotatably connected with an air outlet box (4). A linear guide rail (5) is installed on the frame (1). The feeding mechanism includes a moving frame (6). The frame (1) is provided with a sliding track one (7) and a sliding guide rail two (8). The moving frame (6) is connected with a sliding block (9) and a guide block (10). The sliding block (9) is inserted into the sliding track one (7). The sliding block (9) is connected with the linear guide rail (5). The feeding clamp (2) is inserted into the moving frame (6). The feeding clamp (2) is sleeved with a return spring (11). The sliding guide rail two (8) is provided with a guide groove (12). The guide block (10) is slidably connected with the guide groove (12). The feeding clamp (2) includes a straight rod (13), a fixed block (14) and a buffer block (15). The moving frame (6) is provided with mounting holes, and there are several mounting holes. The straight rod (13) is inserted into the mounting holes. One end of the straight rod (13) is connected with the fixed block (14). The other end of the straight rod (13) is connected with the buffer block (15). The return spring (11) is sleeved on the straight rod (13). One end of the return spring (11) is connected with the fixed block (14). The other end of the return spring (11) is connected with the moving frame (6).

2. The cold air drying device for a circuit board according to claim 1, characterized in that, The water absorption mechanism includes a bracket one (16) and a rotating rod (17). The bracket one (16) is connected with the frame (1). The bracket one (16) is provided with a rotating hole, and a bearing one (18) and a bearing two (19) are installed in the rotating hole. One end of the rotating rod (17) is connected with the bearing one (18). The other end of the rotating rod (17) passes through the water absorption roller (3) and is connected with the bearing two (19).

3. The cold air drying device for a circuit board according to claim 2, characterized in that, The cold air mechanism includes a bracket two (20). The bracket two (20) is connected with the frame (1). The air outlet box (4) is connected with a fixed seat (22) and an air inlet pipe (23). The air inlet pipe (23) is externally connected to an air outlet device. The fixed seat (22) is rotatably connected with the bracket two (20). The air outlet box (4) is provided with a ventilation cavity (24) and air outlet holes (25). The air inlet pipe (23) is communicated with the ventilation cavity (24). The air outlet holes (25) are communicated with the ventilation cavity (24). There are several air outlet holes (25).

4. The cold air drying device for a circuit board according to claim 3, characterized in that, The fixed seat (22) is provided with a connecting rod (26). The bracket two (20) is provided with a jack. The bracket two (20) is connected with a telescopic mechanism (27). The telescopic mechanism (27) is connected with a rack (28). One end of the connecting rod (26) is connected with the fixed seat (22). The other end of the connecting rod (26) passes through the jack and is connected with a gear disk (21). The rack (28) is meshed and connected with the gear disk (21).

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