Cleaning equipment and PCB processing equipment

Abstract

This utility model belongs to the field of spindle cleaning technology, and specifically relates to a cleaning device and PCB processing equipment. The cleaning device includes a housing and a cleaning component. The housing has a cavity, and the cleaning component is disposed within the cavity. A return port is provided on one side of the housing, communicating with the cavity. The cleaning component has a spray channel and a recovery channel. The first end of the spray channel is connected to a liquid supply device, and the second end is used to spray cleaning liquid. The recovery channel communicates with the cavity and is used to allow the cleaning liquid to flow through the return port into an external recovery device. The spray channel precisely guides the cleaning liquid to the area requiring cleaning, and the recovery channel promptly collects the sprayed and falling cleaning liquid, achieving the recycling of the cleaning liquid. This ensures a continuous supply of cleaning liquid, avoiding frequent replenishment due to insufficient cleaning liquid and the need to clean up splashed cleaning liquid, thus improving cleaning efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of spindle cleaning technology, and in particular relates to a cleaning device and PCB processing equipment. Background Technology

[0002] PCB drilling machines are used to drill holes in PCB boards. The chuck of the high-speed spindle of the PCB drilling machine is used to mount the cutting tools. Because dust or debris is generated during processing, it may adhere to the chuck, thus affecting the drilling accuracy of the cutting tools. Therefore, the chuck needs to be cleaned regularly.

[0003] Currently, cleaning is mainly done manually. The equipment structure at the chuck is relatively compact, leaving little space for manual cleaning, which makes cleaning inconvenient, results in low cleaning efficiency, and there are significant differences in manual cleaning. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a cleaning device and PCB processing equipment to address the problem of low cleaning efficiency in existing products.

[0005] To solve the above-mentioned technical problems, on the one hand, this utility model provides a cleaning device, including a housing and a cleaning component. The housing is provided with a cavity, the cleaning component is disposed in the cavity, and a return port is provided on one side of the housing, the return port being connected to the cavity.

[0006] The cleaning component is provided with a spray channel and a recovery channel. The first end of the spray channel is used to connect to a liquid supply device, the second end of the spray channel is used to spray out cleaning liquid, and the recovery channel is connected to the cavity.

[0007] The recycling channel is used to allow the cleaning fluid to flow into an external recycling device through the return port.

[0008] Optionally, the cleaning component includes a first cleaning component and a second cleaning component, wherein the first cleaning component is connected to the second cleaning component, and the end of the first cleaning component away from the second cleaning component can spray out cleaning liquid;

[0009] The spray channel includes a first channel and a second channel that are interconnected. The first channel is located inside the first cleaning component, and the second channel is located inside the second cleaning component.

[0010] Optionally, the cleaning component further includes a third cleaning component, which is sleeved on the outside of the first cleaning component and connected to the second cleaning component;

[0011] The recycling channel includes a third channel and a fourth channel that are interconnected. The third channel is formed between the first cleaning component and the second cleaning component. The fourth channel is disposed in the second cleaning component. The end of the fourth channel away from the third channel is connected to the cavity so that the cleaning liquid flows into the cavity.

[0012] Optionally, the fourth channel includes multiple sub-channels arranged around the third channel, and each sub-channel is connected to the third channel and the cavity.

[0013] Optionally, the cleaning device further includes a flow guide, which is sleeved on the outside of the third cleaning component and is used to guide the falling cleaning liquid into the recovery channel.

[0014] Optionally, the cavity includes a first cavity and a second cavity, wherein the second cavity is further away from the second end of the spray channel than the first cavity;

[0015] One end of the cleaning component is disposed in the second cavity and blocks the first cavity from the second cavity, and the other end of the cleaning component protrudes out of the first cavity;

[0016] The first cavity is connected to the spray channel, and the second cavity is connected to the recovery channel.

[0017] Optionally, on a plane perpendicular to the central axis of the cleaning component, the cross-sectional area of ​​the first cavity is greater than the cross-sectional area of ​​the second cavity.

[0018] Optionally, the housing is provided with a liquid inlet, which is connected to the second cavity, and the liquid return port is connected to the first cavity.

[0019] Optionally, the cleaning device further includes a sealing cover, which is installed on the housing and seals the cavity, and the sealing cover is provided with a through hole for the cleaning component to pass through.

[0020] Optionally, the cleaning device further includes a cleaning component, which is detachably mounted at the second end of the spray channel and is used to extend into the chuck on the spindle of the PCB processing equipment for cleaning.

[0021] Optionally, the cleaning component includes a brush head and a brush rod, the brush head being mounted on the brush rod, and the brush rod being inserted into the second end of the spray channel, so that cleaning fluid is sprayed out from the gap between the spray channel and the brush rod.

[0022] On the other hand, this utility model embodiment provides a PCB processing equipment, including a spindle and a cleaning device as described above. The cleaning device is located below the spindle, and a chuck is installed on the spindle. The second end of the spray channel can spray cleaning liquid onto the chuck.

[0023] The cleaning device provided in this embodiment of the invention can precisely guide the cleaning fluid to the area requiring cleaning through a spray channel for rinsing. The cleaning fluid sprayed from the second end of the spray channel naturally falls after rinsing the object to be cleaned. A recovery channel uses gravity or other auxiliary power (such as negative pressure) to collect this falling cleaning fluid, allowing it to flow into the cavity of the housing, and then into an external recovery device through a return port. This achieves the recycling or centralized treatment of the cleaning fluid, realizing its circularity. This ensures a continuous supply of cleaning fluid, reduces the need for frequent replenishment due to insufficient cleaning fluid and the need to clean up splashed cleaning fluid, saving time and improving cleaning efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a cleaning device provided in an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 Schematic diagram of the cross section along the AA direction;

[0026] Figure 3 This is an exploded view of a cleaning device provided in an embodiment of the present invention;

[0027] Figure 4 This is a partial cross-sectional view of a cleaning device provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of a cleaning component provided in an embodiment of the present invention;

[0029] Figure 6 yes Figure 5 Schematic diagram of the cross section along the BB direction.

[0030] The reference numerals in the accompanying drawings are as follows:

[0031] 1. Shell; 11. Cavity; 111. First cavity; 112. Second cavity; 12. Liquid inlet; 13. Liquid return outlet; 14. Filter screen;

[0032] 2. Cleaning component; 21. First cleaning component; 22. Second cleaning component; 221. Second step structure; 222. Top screw opening; 23. Third cleaning component; 231. First step structure; 24. Spray channel; 241. First channel; 242. Second channel; 25. Recovery channel; 251. Third channel; 252. Fourth channel; 2521. Sub-channel; 26. Second sealing ring;

[0033] 3. Flow guide; 31. First sealing ring;

[0034] 4. Cleaning components; 41. Brush head; 42. Brush handle;

[0035] 5. Sealing cap; 51. Through hole;

[0036] 6. Protective cover. Detailed Implementation

[0037] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0038] like Figures 1 to 6 As shown, an embodiment of the present invention provides a cleaning device, including a housing 1 and a cleaning component 2. The housing 1 is provided with a cavity 11, and the cleaning component 2 is disposed in the cavity 11. A return port 13 is provided on one side of the housing, and the return port 13 communicates with the cavity 11.

[0039] The cleaning component 2 is equipped with a spray channel 24 and a recovery channel 25. The first end of the spray channel 24 is used to connect to a liquid supply device, and the second end of the spray channel 24 is used to spray out cleaning liquid. The recovery channel 25 is connected to the cavity 11 and is used to allow the cleaning liquid to flow into an external recovery device through the return port 13. Since the recovery channel 25, the cavity 11, and the return port 13 are connected in sequence, the cleaning liquid flows into the cavity 11 through the recovery channel 25 and is then discharged from the cavity 11 to the external recovery device through the return port 13, thus completing the recovery of the cleaning liquid.

[0040] The liquid supply device provides cleaning liquid to the cleaning component 2 through the first end of the spray channel 24. Under pressure, the cleaning liquid is sprayed out from the second end of the spray channel 24, forming a cleaning liquid flow with a certain pressure and flow rate, which rinses the object to be cleaned. The rinsing and dissolving effects of the cleaning liquid can remove dirt and impurities from the surface of the object.

[0041] The cleaning fluid sprayed from the second end of the spray channel 24 will fall naturally after rinsing the object to be cleaned. The recovery channel 25 uses gravity or other auxiliary power (such as negative pressure) to collect the falling cleaning fluid and make it flow into the cavity 11 of the housing 1. Then, it flows into the external recovery equipment through the return port, realizing the recycling or centralized treatment of the cleaning fluid, avoiding waste of cleaning fluid and reducing cleaning costs.

[0042] In this embodiment, the spray channel precisely guides the cleaning fluid to the areas requiring cleaning, reducing waste and increasing utilization. The recovery channel promptly collects the sprayed and falling cleaning fluid back into the cavity, where it flows into an external recovery device via the return port, achieving fluid recycling. This ensures a continuous supply of cleaning fluid, avoiding frequent replenishment due to insufficient fluid and the need to clean up splashed fluid, saving time and improving cleaning efficiency.

[0043] In practical applications, a chuck is installed on the spindle of the PCB processing equipment. A drill bit for drilling PCBs can be installed on the chuck. When the chuck is cleaned by the cleaning device, after the chuck of the spindle is above the cleaning component 2, the spindle moves downward so that the second end of the spray channel 24 can enter the interior of the chuck. The cleaning fluid sprayed from the second end of the spray channel 24 can flush the interior of the chuck. The cleaning fluid that falls after flushing the chuck is recovered through the recovery channel 25.

[0044] In one embodiment, the cleaning solution may be water or cleaning oil.

[0045] In one embodiment, the recovery channel 25 is arranged around the spray channel 24, so that the inlet of the recovery channel 25 can be as close as possible to the second end of the spray channel 24, shortening the distance of the cleaning liquid from spraying to recovery and improving the recovery efficiency. Furthermore, since the recovery channel 25 is evenly arranged around the spray channel 24, the cleaning liquid can be evenly recovered from all directions after it is sprayed, avoiding local cleaning liquid residue or accumulation caused by uneven recovery.

[0046] In one embodiment, the cleaning component 2 includes a first cleaning component 21 and a second cleaning component 22. The first cleaning component 21 is connected to the second cleaning component 22. Cleaning liquid can be sprayed from the end of the first cleaning component 21 away from the second cleaning component 22. The second end of the spray channel 24 is the end of the first cleaning component 21 away from the second cleaning component 22. Cleaning liquid is sprayed from the first cleaning component 21, and the spray channel 24 sequentially passes through the first cleaning component 21 and the second cleaning component 22. Preferably, the spray channel 24 extends along the central axis of the cleaning component 2.

[0047] In one embodiment, the spray channel 24 includes a first channel 241 and a second channel 242 that are interconnected. The first channel 241 is disposed inside the first cleaning member 21, and the second channel 242 is disposed inside the second cleaning member 22. The second channel 242 connects the first channel 241 and the liquid supply device. The cleaning liquid flows through the second channel 242 and the first channel 241 in sequence and is then sprayed out from the first cleaning member 21.

[0048] In this design, on a plane perpendicular to the central axis of the cleaning component 2, the cross-sectional area of ​​the first channel 241 is smaller than that of the second channel 242. The second channel 242 primarily delivers the cleaning fluid to the first channel 241. The larger cross-sectional area of ​​the second channel 242 allows the cleaning fluid to flow at a lower velocity and pressure, reducing erosion and wear on the internal structure of the second cleaning component 22. The relatively smaller cross-sectional area of ​​the first channel 241 allows the cleaning fluid to be more concentrated when sprayed, forming a narrower spray range. This helps to accurately guide the cleaning fluid to the location requiring cleaning, avoiding waste and improving cleaning efficiency.

[0049] Furthermore, when the cleaning fluid flows into the first channel 241, which has a smaller cross-sectional area, the pressure of the cleaning fluid will increase, thus improving the cleaning effect.

[0050] In one embodiment, the cleaning component 2 further includes a third cleaning component 23, which is sleeved outside the first cleaning component 21 and connected to the second cleaning component 22. The recovery channel 25 includes a third channel 251 and a fourth channel 252 that are interconnected. The third channel 251 is formed between the first cleaning component 21 and the third cleaning component 23, and the fourth channel 252 is disposed in the second cleaning component 22. The end of the fourth channel 252 away from the third channel 251 is connected to the cavity 11. The third channel 251 is located outside the first cleaning component 21 and can collect the cleaning liquid that is sprayed out by the first cleaning component 21 in a timely manner and guide it to flow to the fourth channel 252. After the cleaning liquid flows through the third channel 251 and the fourth channel 252 in sequence, it is delivered into the cavity 11.

[0051] Preferably, the first cleaning component 21, the second cleaning component 22, and the third cleaning component 23 are integrally formed.

[0052] In one embodiment, both the first cleaning member 21 and the third cleaning member 23 are cylindrical structures, and the third channel 251 is an annular channel.

[0053] In one embodiment, the fourth channel 252 includes multiple sub-channels 2521 arranged around the third channel 251, with each sub-channel 2521 connected to the third channel 251 and the cavity 11. The multiple sub-channels 2521 facilitate the diversion of the cleaning fluid within the third channel 251. After the cleaning fluid flows out of the third channel 251, it can enter the sub-channels 2521 from multiple directions, reducing the accumulation and splashing of cleaning fluid due to insufficient recovery speed in a single channel, thus making the recovery process more efficient.

[0054] In one embodiment, the extending direction of the sub-channel 2521 intersects the extending direction of the third channel 251. The sub-channel 2521 changes the flow direction of the cleaning fluid, guiding the recovered cleaning fluid into the cavity 11.

[0055] Among them, the sub-channel 2521 is a continuous fluid channel constructed directly inside the body of the second cleaning component 22 for material removal on the second cleaning component 22.

[0056] Specifically, the angle between the extending direction of the sub-channel 2521 and the extending direction of the third channel 251 is an acute angle, so that when the cleaning fluid flows out of the sub-channel 2521, it can change its flow direction at a relatively smooth angle and flow more smoothly into the cavity 11. Preferably, the extending direction of the third channel 251 is parallel to the central axis of the second cleaning element 22, and the angle between the extending direction of the sub-channel 2521 and the extending direction of the third channel 251 is 45°.

[0057] Alternatively, the extension direction of sub-channel 2521 may be perpendicular to the extension direction of third channel 251, which facilitates the processing of sub-channel 2521.

[0058] In one embodiment, the cleaning device further includes a guide member 3, which is sleeved on the outside of the third cleaning member 23. The guide member 3 is used to guide the falling cleaning fluid into the recovery channel 25. The guide member 3 guides the falling cleaning fluid into the recovery channel 25, effectively preventing the cleaning fluid from splashing onto the equipment workbench or other parts, thus keeping the work area clean.

[0059] In the direction of the central axis of the cleaning component 2, the length of the guide component 3 is greater than that of the third cleaning component 23, which can provide a more stable and continuous guiding path and expand the guiding range.

[0060] In one embodiment, a first sealing ring 31 is provided on the outside of the end of the guide member 3 near the second cleaning member 22, which can reduce the leakage of cleaning liquid from the gap between the guide member 3 and the third cleaning member 23.

[0061] The third cleaning component 23 has a first step structure 231 on its outer peripheral surface. The end of the guide component 3 near the third cleaning component 23 abuts against the first step structure 231, which restricts the installation position of the guide component 3. The end of the guide component 3 away from the third cleaning component 23 abuts against the clamp, which can enclose the space between the clamp and the cleaning component 2 to prevent cleaning fluid from splashing during the cleaning process.

[0062] Preferably, the guide element 3 is made of rubber and has a certain sealing performance when it abuts against the main shaft.

[0063] In one embodiment, the cavity 11 includes a first cavity 111 and a second cavity 112, wherein the second cavity 112 is located further away from the second end of the spray channel 24 than the first cavity 111. One end of the cleaning member 2 is disposed in the second cavity 112 and blocks the first cavity 111 and the second cavity 112, while the other end of the cleaning member 2 protrudes from the first cavity 111. The first cavity 111 is connected to the recovery channel 25, and the second cavity 112 is connected to the spray channel 24.

[0064] The second chamber 112 is connected to the spray channel 24. After the cleaning fluid flows out from the supply device, it passes through the second chamber 112 and enters the spray channel 24. The first chamber 111 is connected to the recovery channel 25 and is used to receive the recovered cleaning fluid. The cleaning component 2 blocks the first chamber 111 and the second chamber 112, forming a barrier in physical structure, so that the cleaning fluid flows in an orderly manner in different chambers. New cleaning fluid is sprayed out from the second chamber 112 through the spray channel 24, and the used cleaning fluid flows into the first chamber 111 through the recovery channel 25, effectively preventing the cleaning fluid from leaking or flowing between the two chambers.

[0065] The cleaning component 2 includes a first cleaning component 21, a second cleaning component 22 and a third cleaning component 23. The end of the second cleaning component 22 away from the first cleaning component 21 is disposed in the second cavity 112 and blocks the first cavity 111 and the second cavity 112. The end of the first cleaning component 21 away from the second cleaning component 22 and the end of the third cleaning component 23 away from the second cleaning component 22 protrude from the first cavity 111.

[0066] In one embodiment, the second cleaning member 22 has two segments along the central axis of the cleaning member 2, namely a first cleaning member and a second cleaning member. The first cleaning member is located in the first cavity 111, and the second cleaning member is connected in the second cavity 112.

[0067] On a plane perpendicular to the central axis of the cleaning component 2, the cross-sectional area of ​​the first cleaning component is larger than that of the second cleaning component, thereby forming a second step structure 221 at the junction of the first and second cleaning components. The second step structure 221 abuts against the junction of the first cavity 111 and the second cavity 112, which can limit the installation position of the second cleaning component 22 in the cavity 11.

[0068] In addition, a second sealing ring 26 is fitted on the outer periphery of the second cleaning component. After the second cleaning component is connected to the second cavity 112, the second sealing ring 26 can seal the gap between the second cleaning component and the housing 1, so that the first cavity 111 and the second cavity 112 are not connected, thus preventing the cleaning liquid sprayed on the object from mixing with the recovered cleaning liquid.

[0069] In one embodiment, the cross-sectional area of ​​the first cavity 111 is larger than that of the second cavity 112 on a plane perpendicular to the central axis of the cleaning component 2. The larger cross-sectional area of ​​the first cavity 111 allows it to hold more recycled cleaning fluid, while the smaller cross-sectional area of ​​the second cavity 112 facilitates a sealing connection between the second cavity 112 and the second cleaning component 22, allowing the cleaning fluid to enter the spray channel 24.

[0070] In one embodiment, the housing 1 is provided with a liquid inlet 12, which is connected to the second cavity 112, and a liquid return port 13 is connected to the first cavity 111.

[0071] In this embodiment, the flow path of the cleaning fluid is as follows: the cleaning fluid supplied by the fluid supply device enters the second chamber 112 through the inlet 12, and then is sprayed out through the spray channel 24. After use, the cleaning fluid is guided by the guide member 3, flows into the first chamber 111 through the recovery channel 25, and is discharged from the first chamber 111 to the external recovery device through the return port 13.

[0072] In one embodiment, a filter screen 14 is provided at the outlet of the first cavity 111. When the cleaning liquid is discharged through the return port 13, the filter screen 14 can filter the recovered cleaning liquid to prevent impurities from clogging the return port 13.

[0073] In one embodiment, the cleaning device further includes a sealing cover 5, which is installed on the housing 1 and seals the cavity 11. The sealing cover 5 has a through hole 51 for the cleaning component 2 to pass through. By sealing the cavity 11 with the sealing cover 5, the interference of the airflow inside the spindle on the cleaning fluid in the first cavity 111 can be suppressed, effectively preventing the cleaning fluid from being splashed out.

[0074] In one embodiment, the cleaning device further includes a cleaning component 4, which is used to clean the chuck on the spindle of the PCB processing equipment. The cleaning component 4 is detachably installed at the second end of the spray channel 24, enabling quick assembly and disassembly of the cleaning component 4.

[0075] In one embodiment, the cleaning component 4 includes a brush head 41 and a brush rod 42. The brush head 41 is mounted on the brush rod 42, which is inserted into the second end of the spray channel 24, allowing the cleaning fluid to be sprayed out from the gap between the spray channel 24 and the brush rod 42. After the cleaning fluid is sprayed out, it wets the brush head 41 and washes away dust, debris, and other impurities adhering to the inside of the spindle chuck. After spraying the cleaning fluid continuously for a period of time, stubborn residues gradually soften under the wetting and dissolving action of the cleaning fluid. After stopping the spraying, the brush head 41 is inserted into the inside of the chuck to precisely wipe and scrape away the softened residues, improving the cleanliness of the spindle chuck.

[0076] The second cleaning component 22 of the cleaning component 2 is equipped with a set screw opening 222. By installing a set screw in the set screw opening 222, the cleaning component 4 can be disassembled and installed. Specifically, when the set screw is screwed into the set screw opening 222, its end can firmly press against the brush rod 42 as the set screw gradually tightens, forming a stable mechanical fastening force. This ensures that the brush rod 42 remains stable within the spray channel 24, maintaining its positional accuracy even under the vibration and impact generated by the high-pressure spray of the cleaning fluid. When the cleaning component 4 reaches the end of its service life or needs to be replaced, the operator only needs to loosen the set screw to release the binding force on the brush rod 42, allowing the brush rod 42 to be quickly and smoothly removed from the spray channel 24, completing the replacement process of the cleaning component 4.

[0077] In one embodiment, the cleaning device further includes a protective cover 6. When not cleaning, the protective cover 6 is connected to the housing 1 and protects the cleaning component 4 to prevent dust from falling onto the brush head 41 and affecting the cleaning effect of the brush head 41.

[0078] On the other hand, this utility model embodiment provides a PCB processing equipment, including a spindle and the cleaning device described in the above embodiment. The cleaning device is located below the spindle, and a chuck is installed on the spindle. The second end of the spray channel 24 can spray cleaning fluid into the chuck. The cleaning fluid sprayed from the second end of the spray channel 24 can flush the inside of the chuck, and the cleaning fluid that falls off after flushing the chuck is recovered through the recovery channel 25.

[0079] In one embodiment, multiple spindles are provided, and multiple cleaning devices are provided. The cleaning component 2 of each cleaning device can spray cleaning liquid onto the chuck on the corresponding spindle.

[0080] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A cleaning device, characterized in that, The device includes a housing and a cleaning component. The housing has a cavity, the cleaning component is disposed in the cavity, and a return port is provided on one side of the housing, which communicates with the cavity. The cleaning component is provided with a spray channel and a recovery channel. The first end of the spray channel is used to connect to a liquid supply device, the second end of the spray channel is used to spray out cleaning liquid, and the recovery channel is connected to the cavity. The recycling channel is used to allow the cleaning fluid to flow into an external recycling device through the return port.

2. The cleaning apparatus of claim 1, wherein The cleaning component includes a first cleaning component and a second cleaning component, the first cleaning component is connected to the second cleaning component, and the end of the first cleaning component away from the second cleaning component can spray out cleaning liquid; The spray channel includes a first channel and a second channel that are interconnected. The first channel is located inside the first cleaning component, and the second channel is located inside the second cleaning component.

3. The cleaning apparatus of claim 2, wherein The cleaning component further includes a third cleaning component, which is sleeved on the outside of the first cleaning component and connected to the second cleaning component; The recycling channel includes a third channel and a fourth channel that are interconnected. The third channel is formed between the first cleaning component and the second cleaning component. The fourth channel is disposed in the second cleaning component. The end of the fourth channel away from the third channel is connected to the cavity so that the cleaning liquid flows into the cavity.

4. The cleaning apparatus of claim 3, wherein The fourth channel includes multiple sub-channels, which are arranged around the third channel, and each sub-channel is connected to the third channel and the cavity.

5. The cleaning device as described in claim 3, characterized in that, The cleaning device also includes a flow guide, which is sleeved on the outside of the third cleaning component and is used to guide the falling cleaning liquid into the recovery channel.

6. The cleaning apparatus of claim 1, wherein The cavity includes a first cavity and a second cavity, wherein the second cavity is further away from the second end of the spray channel than the first cavity; One end of the cleaning component is disposed in the second cavity and blocks the first cavity from the second cavity, and the other end of the cleaning component protrudes out of the first cavity; The first cavity is connected to the spray channel, and the second cavity is connected to the recovery channel.

7. The cleaning apparatus of claim 6, wherein On a plane perpendicular to the central axis of the cleaning component, the cross-sectional area of ​​the first cavity is greater than that of the second cavity.

8. The cleaning apparatus of claim 6, wherein The housing is provided with a liquid inlet, which is connected to the second cavity, and the liquid return port is connected to the first cavity.

9. The cleaning apparatus of claim 1, wherein The cleaning device also includes a sealing cover, which is installed on the housing and seals the cavity. The sealing cover has a through hole for the cleaning component to pass through.

10. The cleaning apparatus of claim 1, wherein, The cleaning device also includes a cleaning component, which is detachably mounted at the second end of the spray channel. The cleaning component is used to extend into the chuck on the spindle of the PCB processing equipment for cleaning.

11. The cleaning apparatus of claim 10, wherein, The cleaning component includes a brush head and a brush rod. The brush head is mounted on the brush rod, and the brush rod is inserted into the second end of the spray channel so that the cleaning liquid is sprayed out from the gap between the spray channel and the brush rod.

12. A PCB processing apparatus characterized by comprising: The device includes a spindle and a cleaning apparatus as described in any one of claims 1-11, wherein the cleaning apparatus is located below the spindle, a chuck is mounted on the spindle, and the second end of the spray channel is capable of spraying cleaning fluid onto the chuck.

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