Water chasing air knife device and PCB production equipment

Abstract

The utility model discloses a kind of water chasing air knife device and PCB production equipment, it is related to PCB production equipment technical field, and wherein, the water chasing air knife device includes air supply component, the air supply component is used to communicate external gas and air supply towards circuit board, the air supply component includes air supply pipe and is set on the air supply mouth of the air supply pipe, the air supply pipe has air supply passage, the air supply mouth is equipped with the air outlet that communicates with the air supply passage;Guiding component, the guiding component is set on the air supply mouth side close to the air outlet, the guiding component is used for circuit board abutment and guides circuit board conveying;The technical scheme provided by the utility model is by setting guiding component at the air outlet of air supply component, guiding component can abut circuit board along the side of circuit board thickness direction, avoid that circuit board partial produces buckling and collides with air supply mouth, avoid the friction between air supply mouth and circuit board.

Description

Technical Field

[0001] This utility model relates to the field of PCB production equipment technology, and in particular to a water-driving air knife device and PCB production equipment. Background Technology

[0002] In PCB manufacturing equipment, a water-repellent air knife is a device used to remove residual chemicals from circuit boards after various cleaning processes. Subsequent processes require the removal of these residual chemicals to prevent contamination or oxidation. The water-repellent air knife avoids these drying defects caused by chemical residue. However, existing water-repellent air knives often have air delivery components that can scratch the circuit boards, reducing yield and increasing production costs. Utility Model Content

[0003] The main purpose of this utility model is to propose a water-driving air knife device and PCB production equipment, which aims to avoid the scratching caused by the air supply component being too close to the circuit board.

[0004] To achieve the above objectives, the present invention proposes a water-repellent air knife device, comprising: an air supply assembly, which is used to connect to external gas and supply air to the circuit board; the air supply assembly includes an air supply pipe and an air supply nozzle disposed on the air supply pipe; the air supply pipe has an air supply channel; and the air supply nozzle has an air outlet communicating with the air supply channel; and a guide assembly, which is disposed on the side of the air supply nozzle near the air outlet, and is used to allow the circuit board to abut against and guide the circuit board during transport.

[0005] In one embodiment, the guiding assembly includes a guide member disposed on at least one side of the air nozzle along a first direction, the guide member extending along the first direction.

[0006] In one embodiment, the guide assembly further includes a guide roller rotatably disposed on the guide member.

[0007] In one embodiment, the guide rollers are provided in a plurality of manner, and the air nozzle is provided with guide members on both sides along the extension direction of the air supply pipe, with each guide roller corresponding to one of the guide members.

[0008] In one embodiment, the air nozzle includes a first mounting section and an air outlet section connected to each other. The first mounting section is disposed on the air supply pipe and communicates with the air supply pipe. The air outlet section includes a first conveying section and a second conveying section connected to each other. The first conveying section is provided with the air outlet. The first conveying section is disposed on the side of the second conveying section away from the first mounting section. The first conveying section is inclined relative to the second conveying section along the first direction.

[0009] In one embodiment, the guide rollers are provided in a plurality of manner, the air nozzle is provided with guide members on both sides along the first direction, the air outlet is located between two of the guide members, and each guide roller is correspondingly provided with one of the guide members.

[0010] In one embodiment, the air nozzles are provided in multiple locations, and the multiple air nozzles are spaced apart along the extension direction of the air supply pipe.

[0011] In one embodiment, the water-driving air knife device further includes fasteners, the guide portion has a first mounting hole, the guide roller has a second mounting hole that matches the first mounting hole, and the fasteners are respectively inserted through the first mounting hole and the second mounting hole in sequence, so that the guide roller is rotatably mounted on the guide portion.

[0012] In one embodiment, the fastener includes a second mounting section and a connecting section that are connected to each other. The connecting section is disposed in the second mounting hole. The outer side wall of the second mounting section is provided with a snap-fit ​​portion. The inner side wall of the first mounting hole is provided with a snap-fit ​​groove that matches the snap-fit ​​portion. The snap-fit ​​portion snaps into the snap-fit ​​groove so that the second mounting section is disposed in the first mounting hole.

[0013] This utility model also proposes a PCB production equipment, including a water-driving air knife device as described in any of the above embodiments.

[0014] The technical solution of this utility model utilizes an air supply component to create a stable and uniform directional airflow on both sides of the circuit board's thickness direction, thereby quickly and efficiently blowing away the chemicals on the circuit board surface and effectively preventing chemical residue. By setting a guide component at the air outlet of the air supply component, the guide component can abut against the circuit board on one side along the circuit board's thickness direction, preventing the circuit board from warping locally and colliding with the air supply nozzle, thus avoiding friction between the air supply nozzle and the circuit board. By setting the guide component to abut against the circuit board, the guide component guides the circuit board to be transported along the extension direction of the conveying channel, reducing friction between the guide component and the circuit board and improving the yield rate of the circuit board. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of an embodiment of the water-driving air knife device provided by this utility model; Figure 2 A structural cross-sectional view of an embodiment of the air supply component in the water-driving air knife device provided by this utility model; Figure 3 A schematic diagram of an embodiment of the air nozzle and guide roller in the water-driving air knife device provided by this utility model; Figure 4 A schematic diagram of a PCB manufacturing equipment according to an embodiment of the present utility model; Figure 5 A front view of an embodiment of the PCB manufacturing equipment provided by this utility model; Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0017] Explanation of icon numbers: 1. Air supply assembly; 11. Air supply duct; 111. Air supply channel; 12. Air nozzle; 121. Air outlet; 122. First mounting section; 123. Air outlet section; 1231. First conveying section; 1232. Second conveying section; 13. First air supply assembly; 14. Second air supply assembly; 15. Third air supply assembly; 2. Guide assembly; 21. Guide component; 211. First mounting hole; 2111. Snap-fit ​​groove; 22. Guide roller; 221. Second mounting hole; 3. Fastener; 31. Second mounting section; 311. Snap-fit ​​part; 32. Connecting section; 4. Circuit board; 5. Hanging assembly.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] 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 scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] This utility model proposes a water-driving air knife device.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 6 In one embodiment of this utility model, the water-repelling air knife device includes an air supply component 1 and a guide component 2. The air supply component 1 is used to connect with external gas and supply air to the circuit board. The air supply component 1 includes an air supply pipe 11 and an air supply nozzle 12 disposed on the air supply pipe 11. The air supply pipe 11 has an air supply channel 111, and the air supply nozzle 12 has an air outlet 121 communicating with the air supply channel 111. The guide component 2 is disposed on the side of the air supply nozzle 12 near the air outlet 121, and the guide component 2 is used to allow the circuit board to abut against and guide the circuit board during transport.

[0024] The technical solution of this utility model uses an air supply component 1 to form a stable and uniform directional airflow on at least one side of the circuit board 4 in the thickness direction, thereby quickly and efficiently blowing away the chemicals on the surface of the circuit board 4 and effectively avoiding chemical residue on the surface of the circuit board 4. By setting a guide component 2 at the air outlet 121 of the air supply component 1, the guide component 2 can abut against the circuit board 4 on one side in the thickness direction of the circuit board 4, avoiding local warping of the circuit board 4 and collision with the air supply nozzle 12, and avoiding friction between the air supply nozzle 12 and the circuit board 4. By setting the guide component 2 to abut against the circuit board 4, the guide component 2 guides the circuit board 4 to be transported along the extension direction of the conveying channel, reducing friction between the guide component 2 and the circuit board 4 and improving the yield of the circuit board 4.

[0025] In this embodiment, the air supply component 1 is used to guide and blow the airflow generated by the blower onto the circuit board 4, so as to blow away the chemicals on the circuit board 4 through continuous airflow. This application uses the air supply component 1 located at the feed end of the PCB production equipment. The air supply component 1 blows air onto at least one side of the circuit board 4 along its thickness direction, removing residual chemicals on the circuit board 4 under the action of the airflow, thus improving the drying efficiency of the circuit board 4 by the air supply component 1. To address the problem that the flexible circuit board 4 is prone to warping in the airflow, resulting in uneven drying or surface abrasion, the air supply component 1 can be configured with at least two sets. This application provides guide components 2 at the air outlet 121 of the air supply component 1. Multiple sets of guide components 2 apply clamping force to the circuit board 4 from both sides along its thickness direction, thereby preventing local warping of the circuit board 4. During the conveying process of the circuit board 4, the guide components 2 rotate and abut with the surface of the circuit board 4, providing stable guidance for the circuit board 4 and avoiding friction on the board surface.

[0026] In this embodiment, the air supply assembly 1 further includes an air supply pipe 11 and an air supply nozzle 12 disposed on the air supply pipe 11. The air supply nozzle 12 is connected to the air supply pipe 11 and has an air outlet 121. The air supply pipe 11 has an air supply channel 111. The air supply assembly 1 also includes a blower for providing airflow to the air supply pipe 11. One end of the air supply pipe 11 has an air inlet connected to the blower. The air supply nozzle 12 is disposed on the outer peripheral wall of the air supply pipe 11 and is connected to the air supply pipe 11. With the cooperation of the air supply nozzle 12 and the air supply pipe 11, the airflow generated by the blower is blown onto the circuit board 4 through the air inlet, the air supply channel 111, and the air outlet 121 of the air supply channel 111, thereby improving the drying efficiency of the air supply assembly 1.

[0027] like Figure 1 and Figure 3 As shown, in one embodiment, the guide assembly 2 includes a guide member 21, which is disposed on at least one side of the air nozzle 12 along a first direction and extends along the first direction.

[0028] In this embodiment, the air nozzle 12 is provided with guide members 21 on both sides along the first direction, and the air outlet 121 is located between the two guide members 21. The air nozzle 12 is provided with guide members 21 on both sides along the first direction, and the two guide members 21 extend to different sides in the extension direction of the conveying channel. This arrangement ensures that the extension direction of the guide members 21 is consistent with the conveying direction of the circuit board 4, making it easier for the guide members 21 to directly contact the circuit board 4 and guide the circuit board 4 to be conveyed along the first direction. This increases the contact area between the guide assembly 2 and the circuit board 4, improving the stability of the clamping between the guide members 21 and the circuit board 4. In one embodiment, the guide members 21 can be integrally formed with the air nozzle 12, or the guide members 21 and the air nozzle 12 can be detachably connected.

[0029] like Figure 1 and Figure 3 As shown, in one embodiment, the guide assembly 2 further includes a guide roller 22, which is rotatably disposed on the guide member 21.

[0030] In this embodiment, at least one side of the air nozzle 12 along the extension direction of the conveying channel is provided with a guide member 21, and the guide roller 22 is rotatably disposed on the guide member 21, thereby improving the stability of the connection between the guide roller 22 and the air nozzle 12. The guide member 21 extends along the extension direction of the conveying channel so that the rotation axis of the guide roller 22 is arranged in the vertical direction. Under the rotation action of the guide roller 22, the guide roller 22 can guide the circuit board 4 to be conveyed along the extension direction of the conveying channel.

[0031] like Figure 1 and Figure 3 As shown, in one embodiment, the guide rollers 22 are provided in multiple ways, and the air nozzles 12 are provided with guide members 21 on both sides along the extension direction of the air supply pipe 11, with each guide roller 22 corresponding to one guide member 21.

[0032] In this embodiment, guide members 21 are provided on both sides of the air nozzle 12 along the extension direction of the air duct 11, and the two guide members 21 extend towards the same side in the extension direction of the conveying channel. Each guide member 21 is provided with a guide roller 22, further increasing the number of guide rollers 22 on a single air nozzle 12. This arrangement increases the sliding contact area between the guide roller 22 and the circuit board 4, improves the stability of the clamping between the guide roller 22 and the circuit board 4, and thus makes the guide roller 22 clamp more stably and drive the circuit board 4 to move along the extension direction of the conveying channel.

[0033] like Figure 1 and Figure 3 As shown, in one embodiment, the guide rollers 22 are provided in multiple ways, the air nozzles 12 are provided with guide members 21 on both sides along the first direction, the air outlet 121 is located between two guide members 21, and each guide roller 22 is correspondingly provided with one guide member 21.

[0034] In this embodiment, each air nozzle 12 is provided with four guide members 21. Two guide members 21 are provided on one side of the air outlet 121 and are spaced apart along the extension direction of the air supply pipe 11. The other two guide members 21 are provided on the other side of the air outlet 121 and are spaced apart along the extension direction of the air supply pipe 11, so that the four guide rollers 22 surround the outer wall of the air nozzle 12 near the air outlet 121, thereby improving the stability of the clamping between the guide rollers 22 and the circuit board 4.

[0035] like Figure 3 As shown, in one embodiment, the air nozzle 12 includes a first mounting section 122 and an air outlet section 123 connected to each other. The first mounting section 122 is disposed on the air supply pipe 11 and communicates with the air supply pipe 11. The air outlet section 123 includes a first conveying section 1231 and a second conveying section 1232 connected to each other. The first conveying section 1231 is provided with the air outlet 121. The first conveying section 1231 is disposed on the side of the second conveying section 1232 away from the first mounting section 122. The first conveying section 1231 is inclined relative to the second conveying section 1232 along the first direction.

[0036] In this embodiment, the first mounting section 122 is used to install on the outer wall of the air supply duct 11 to improve the stability of the connection between the air nozzle 12 and the air supply duct 11. There are many ways to connect the first mounting section 122 and the air supply duct 11, and no specific method is limited. For example, the air supply duct 11 may have an installation port, and the first mounting section 122 may be welded to the installation port. Alternatively, the air supply duct 11 may have an installation groove, and the first mounting section 122 may have a plug-in portion that matches the installation groove. The plug-in portion is inserted into the installation groove so that the first mounting section 122 is located on the outer wall of the air supply duct 11. The air outlet section 123 is used to connect to the air supply channel 111 of the air supply duct 11, so that the airflow in the air supply channel 111 is blown more efficiently to the circuit board 4 and the mounting bracket assembly 5. The air outlet section 123 includes a first conveying section 1231 and a second conveying section 1232 connected to each other. The first conveying section 1231 is bent relative to the second conveying section 1232 along the extension direction of the conveying channel, so that there is a preset angle between the first conveying section 1231 and the second conveying section 1232, to prevent the airflow from blowing directly from the air outlet 121 onto the surface of the circuit board 4. In a preferred embodiment, the preset angle is not less than 0° and not more than 45°, and the preset angle can be 30°, 35°, and 40°. Within this range, by adjusting the preset angle, the speed of the airflow blowing onto the circuit board 4 can be better adjusted, while avoiding excessive increase or decrease in the airflow speed, which would affect the efficiency of drying the circuit board 4 and the hanging assembly 5.

[0037] like Figure 1 and Figure 2 As shown, in one embodiment, the air nozzles 12 are configured as a plurality of nozzles, and the plurality of air nozzles 12 are spaced apart along the extension direction of the air supply pipe 11.

[0038] In this embodiment, multiple air nozzles 12 are provided, and the multiple air nozzles 12 are spaced apart along the extension direction of the air supply pipe 11, which can increase the air supply range of the air supply component 1 to the circuit board 4, thereby improving the drying efficiency of the circuit board 4.

[0039] like Figure 3As shown, in one embodiment, the water-driving air knife device further includes a fastener 3, the guide member 21 has a first mounting hole 211, the guide roller 22 has a second mounting hole 221 that matches the first mounting hole 211, and the fastener 3 is sequentially inserted into the first mounting hole 211 and the second mounting hole 221, so that the guide roller 22 is rotatably mounted on the guide member 21.

[0040] In this embodiment, the guide member 21 is provided with a first mounting hole 211 through the extension direction of the air supply pipe 11, and the guide roller 22 has a second mounting hole 221 that matches the first mounting hole 211. The fasteners 3 are respectively passed through the first mounting hole 211 and the second mounting hole 221 in sequence, so that the guide roller 22 is rotatably mounted on the guide member 21, thereby improving the stability of the rotatable connection between the guide roller 22 and the guide member 21.

[0041] like Figure 3 As shown, in one embodiment, the fastener 3 includes a second mounting section 31 and a connecting section 32 connected to each other. The connecting section 32 is disposed in the second mounting hole 221. The outer side wall of the second mounting section 31 is provided with a snap-fit ​​portion 311. The inner side wall of the first mounting hole 211 is provided with a snap-fit ​​groove 2111 that matches the snap-fit ​​portion 311. The snap-fit ​​portion 311 snaps into the snap-fit ​​groove 2111 so that the second mounting section 31 is disposed in the first mounting hole 211.

[0042] In this embodiment, the fastener 3 includes a second mounting section 31 and a connecting section 32 connected to each other. The connecting section 32 is disposed within the second mounting hole 221, allowing the guide roller 22 to rotate relative to the fastener 3 and the guide member 21. The fastener 3 restricts the movement of the guide roller 22 along the extension direction of the air supply duct 11, preventing the guide roller 22 from falling off the guide member 21 during rotation. To further improve the stability of the rotational connection between the guide roller 22 and the guide member 21, the fastener 3 engages with the first mounting hole 211 via the second mounting section 31. Specifically, the outer side wall of the second mounting section 31 is provided with a snap-fit ​​portion 311, and the inner side wall of the first mounting hole 211 is provided with a snap-fit ​​groove 2111 that matches the snap-fit ​​portion 311. The snap-fit ​​portion 311 engages with the snap-fit ​​groove 2111, thereby securing the second mounting section 31 to the first mounting hole 211.

[0043] This utility model also proposes a PCB production equipment, which includes a water-driving air knife device. The specific structure of the water-driving air knife device is as described in the above embodiments. Since this PCB production equipment adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0044] In this embodiment, the water-repellent air knife device is used to air dry the circuit board 4 after cleaning in the PCB production equipment, so as to remove the chemical solution on the surface of the hanger assembly 5 and the circuit board 4, and avoid the situation where local wetness occurs on the hanger assembly 5 and the circuit board 4, which would affect the quality of the circuit board 4. The frame is provided with a conveying channel extending along a first direction, which may be consistent with the front and rear direction of the PCB production equipment. The conveying channel is connected to the discharge end of the electroplating tank in the previous cleaning process and is used to convey the dried circuit board 4 to the next process. The hanger assembly 5 is movably mounted on the frame along the first direction, and the clamping end of the hanger assembly 5 is located above the conveying channel, so that the hanger assembly 5 suspends the circuit board 4 in the conveying channel, so that the hanger assembly 5 drives the circuit board 4 to be conveyed along the extension direction of the conveying channel, thereby improving the stability of the circuit board 4 being conveyed along the conveying channel. Specifically, the hanger assembly 5 may include a bracket, a driving component, and multiple clamps mounted on the bracket. The clamps are used to clamp the circuit board 4 to improve the stability of the hanger assembly 5 clamping the circuit board 4. The driving component is connected to the bracket, and the driving component is used to drive the bracket to move along the first direction.

[0045] like Figure 4 , Figure 5 and Figure 6 As shown, in one embodiment, the PCB manufacturing equipment includes at least two sets of air supply components 1, and the at least two sets of air supply components 1 include a first air supply component 13 and a second air supply component 14. Along the first direction, the tilt direction of the first conveying section 1231 on the first air supply component 13 is opposite to the tilt direction of the first conveying section 1231 on the second air supply component 14.

[0046] In this embodiment, the present application sets the inclination direction of the first conveying section 1231 on the first air supply assembly 13 to be opposite to the inclination direction of the first conveying section 1231 on the second air supply assembly 14 along the extension direction of the conveying channel, so that the residual medicine on the circuit board 4 and the hanger assembly 5 flows in different directions under the action of airflow, thereby further improving the drying efficiency of the circuit board 4.

[0047] like Figure 4 , Figure 5 and Figure 6 As shown, in one embodiment, at least two sets of the air supply components 1 further include a third air supply component 15, which is disposed on the side of the first air supply component 13 away from the conveying channel.

[0048] In this embodiment, the air nozzle 12 of the third air supply assembly 15 can be located above the air nozzle 12 of the second air supply assembly 14 or the first air supply assembly 13. The third air supply assembly 15 is located on the side of the first air supply assembly 13 away from the feed end of the conveying channel, which makes it more convenient for the third air supply assembly 15 to blow air onto the hanger assembly 5. This application uses the third air supply assembly 15 to air dry the hanger assembly 5, preventing residual medicine on the hanger assembly 5 from dripping onto the circuit board 4.

[0049] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A water-driving air knife device, characterized in that, include: An air supply assembly is used to connect to external gas and supply air to the circuit board. The air supply assembly includes an air supply pipe and an air supply nozzle disposed on the air supply pipe. The air supply pipe has an air supply channel, and the air supply nozzle has an air outlet that communicates with the air supply channel. A guide assembly is provided on the side of the air nozzle near the air outlet, and the guide assembly is used to allow the circuit board to abut against and guide the circuit board during transport.

2. The water-driving air knife device as described in claim 1, characterized in that, The guiding assembly includes a guide member disposed on at least one side of the air nozzle along a first direction, and the guide member extends along the first direction.

3. The water-driving air knife device as described in claim 2, characterized in that, The guide assembly further includes a guide roller, which is rotatably mounted on the guide member.

4. The water-driving air knife device as described in claim 3, characterized in that, The guide rollers are configured in multiple ways, and the air nozzle is provided with guide members on both sides along the extension direction of the air supply pipe. Each guide roller is correspondingly provided with one guide member.

5. The water-driving air knife device as described in claim 3, characterized in that, The air nozzle includes a first mounting section and an air outlet section connected to each other. The first mounting section is located on the air supply pipe and is connected to the air supply pipe. The air outlet section includes a first conveying section and a second conveying section connected to each other. The first conveying section is provided with the air outlet. The first conveying section is located on the side of the second conveying section away from the first mounting section. The first conveying section is inclined relative to the second conveying section along the first direction.

6. The water-driving air knife device as described in claim 3, characterized in that, The guide rollers are configured in multiple ways, and the air nozzle is provided with guide members on both sides along the first direction. The air outlet is located between two guide members, and each guide roller is correspondingly provided with one guide member.

7. The water-driving air knife device as described in claim 1, characterized in that, The air supply nozzles are configured in multiple ways, and the multiple air supply nozzles are spaced apart along the extension direction of the air supply pipe.

8. The water-driving air knife device as described in claim 3, characterized in that, The water-driving air knife device also includes fasteners. The guide member has a first mounting hole, and the guide roller has a second mounting hole that matches the first mounting hole. The fasteners are respectively inserted through the first mounting hole and the second mounting hole in sequence, so that the guide roller is rotatably mounted on the guide member.

9. The water-driving air knife device as described in claim 8, characterized in that, The fastener includes a second mounting section and a connecting section that are connected to each other. The connecting section is disposed in the second mounting hole. The outer side wall of the second mounting section is provided with a snap-fit ​​part. The inner side wall of the first mounting hole is provided with a snap-fit ​​groove that matches the snap-fit ​​part. The snap-fit ​​part snaps into the snap-fit ​​groove so that the second mounting section is disposed in the first mounting hole.

10. A PCB manufacturing equipment, characterized in that, Includes the water-driving air knife device as described in any one of claims 1 to 9.

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