Liquid spraying device, method and 3C product surface cleaning system

Abstract

The application belongs to the technical field of cleaning, and proposes a liquid spraying device, a method and a 3C product surface cleaning system. The liquid spraying device comprises a first gas source, a solvent tank, a spray head, a buffer part, a pressure applying part, a first sealing part and a second sealing part. The buffer part has a buffer cavity. The buffer part is provided with a liquid inlet and a liquid outlet. The solvent tank is communicated with the buffer cavity through the liquid inlet. The spray head is communicated with the buffer cavity through the liquid outlet. The solvent is transported to the buffer cavity under the action of the first gas source. After the solvent in the buffer cavity is buffered to a preset volume, the liquid inlet is sealed by the second sealing part, and the liquid outlet is opened by the first sealing part. Then, under the action of the pressure applying part, positive pressure is provided to the buffer cavity to output the solvent in the buffer cavity to the spray head. In this way, the volume of the solvent sprayed by the spray head can be prevented from being affected by the gas output by the first gas source, so that the spray head can accurately spray a certain amount of solvent.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology, and in particular to a spraying device, method, and surface cleaning system for 3C products. Background Technology

[0002] With the widespread use of 3C products, consumers have increasingly higher demands for products with undamaged appearances. Therefore, manufacturers must promptly identify and address any appearance defects during the production of each product. Typically, products undergo rigorous appearance inspection after each manufacturing process.

[0003] Taking a mobile phone frame as an example, a high-precision camera is used to inspect the sides of the frame to detect defects such as scratches and discoloration. Additionally, the product surface needs to be cleaned before using a high-precision camera to avoid dirt affecting the test results.

[0004] Currently, most methods for cleaning product surfaces involve delivering wiping solvent from a solvent tank to a nozzle. The solvent is then sprayed from the nozzle, wetting a lint-free cloth, which is then used to wipe the product surface. Compared to manual cleaning, this method is highly automated, saves time, provides better cleaning results, reduces labor intensity, and avoids secondary contamination of the product. However, because the solvent in the tank is often delivered to the nozzle under air pressure, it mixes with gas during delivery, making it difficult to control the spray volume. If the spray volume is too high, residue may remain on the product surface after wiping; if the spray volume is too low, the lint-free cloth may not effectively remove dirt.

[0005] Therefore, the above problems urgently need to be solved. Summary of the Invention

[0006] The purpose of this invention is to provide a spraying device, method, and surface cleaning system for 3C products, so as to accurately control the quantitative spraying of solvent from the nozzle.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A liquid spraying device includes a first gas source, a solvent tank, and a nozzle. The solvent tank is used to contain solvent. The first gas source is connected to the solvent tank, and the solvent tank is connected to the nozzle. The first gas source is configured to supply gas into the solvent tank so that the solvent in the solvent tank is delivered to the nozzle.

[0009] The buffer unit has a buffer cavity, and the buffer unit is provided with an inlet and an outlet. The solvent tank is connected to the buffer cavity through the inlet, and the nozzle is connected to the buffer cavity through the outlet.

[0010] A pressure-applying section is disposed in the buffer chamber and is used to provide positive pressure to the buffer chamber so that the solvent in the buffer chamber is output from the outlet.

[0011] A first sealing part is disposed at the liquid outlet to block or open the liquid outlet;

[0012] The second sealing part is disposed at the liquid inlet to block or open the liquid inlet.

[0013] Preferably, the first closure portion includes:

[0014] A guide rod is movably connected to the buffer section so that the sealing end of the guide rod can be inserted into the buffer cavity to block the liquid outlet;

[0015] A drive element, which is connected to the other end of the guide rod and configured to drive the guide rod to move.

[0016] Preferably, the buffer section is provided with a sliding cavity, and the guide rod is slidably disposed in the sliding cavity and passes through the sliding cavity;

[0017] The driving component is a second air source, which is connected to the sliding cavity and configured to provide positive pressure to the sliding cavity.

[0018] Preferably, along the output direction of the solvent, the buffer chamber includes a first flow channel, a second flow channel, and a third flow channel arranged vertically in sequence, the first flow channel being connected to the inlet and the third flow channel being connected to the outlet.

[0019] Preferably, a sealing seat adapted to the sealing end is provided in the second flow channel, and the sealing end is not higher than the third flow channel.

[0020] Preferably, the pressure-applying part is a piston rod, which is slidably disposed inside the first flow channel and divides the first flow channel into a rod chamber and a rodless chamber. The liquid inlet is connected to the rodless chamber, and the second gas source is connected to the rod chamber.

[0021] The first sealing part further includes a solenoid valve, which is electrically connected to the second air source so that the second air source provides positive pressure to the rod chamber or the sliding chamber.

[0022] Preferably, the spraying device further includes a third gas source, which is connected to the nozzle to supply gas to the nozzle, and the gas pressure supplied by the third gas source to the nozzle is less than the gas pressure supplied by the first gas source to the solvent tank.

[0023] Preferably, the second sealing part is an on / off valve, and the on / off valve is electrically connected to the first sealing part.

[0024] A liquid spraying method using the above-mentioned liquid spraying device includes:

[0025] The first sealing section is closed and the second sealing section is opened, allowing the first gas source to input gas into the solvent tank, so as to transport the solvent in the solvent tank to the buffer chamber;

[0026] While opening the first sealing section and closing the second sealing section, the pressure application section provides positive pressure to the buffer chamber to deliver the solvent in the buffer chamber to the nozzle.

[0027] A surface cleaning system for 3C products, comprising:

[0028] A wiping head, used to hold a lint-free cloth in place;

[0029] As described above, the liquid spraying device is positioned opposite to the lint-free cloth.

[0030] The beneficial effects of this invention are:

[0031] This invention proposes a liquid spraying device, method, and surface cleaning system for 3C products. Solvent is delivered to a buffer chamber by a first gas source. Once the solvent in the buffer chamber reaches a preset volume, the inlet is sealed by a second sealing part, and the outlet is opened by a first sealing part. Subsequently, a positive pressure is applied to the buffer chamber by a pressurizing part to output the solvent from the buffer chamber to the nozzle. This design avoids the gas output from the first gas source affecting the volume of solvent sprayed by the nozzle, thus facilitating precise control of the amount of solvent sprayed. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the liquid spraying device proposed in the embodiments of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the buffer section, the first sealing section, and the pressure application section proposed in the embodiments of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure between the first sealing part and the liquid flow channel proposed in the embodiment of the present invention.

[0035] In the picture:

[0036] 1. Primary gas source; 2. Solvent tank;

[0037] 3. Buffer section; 31. Buffer cavity; 311. First flow channel; 312. Second flow channel; 313. Third flow channel; 32. Sealing seat; 33. Sliding cavity; 34. Liquid inlet; 35. Liquid outlet;

[0038] 4. Pressure application section;

[0039] 5. First sealing section; 51. Guide rod; 52. Driving component; 53. Solenoid valve;

[0040] 6. Second sealing section; 7. Third air source; 8. Pressure reducing valve; 9. Nozzle. Detailed Implementation

[0041] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0042] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0043] In this application, the term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent: the existence of only one centrifugal vortex magnetic pump, the simultaneous existence of one centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump, or the existence of only one centrifugal vortex magnetic pump. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0044] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0045] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0046] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0047] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0048] Please see Figures 1 to 3This embodiment proposes a liquid spraying device, which includes a first gas source 1, a solvent tank 2, and a nozzle 9. The solvent tank 2 is used to contain solvent. The first gas source 1 is connected to the solvent tank 2, and the solvent tank 2 is connected to the nozzle 9. The first gas source 1 is configured to supply gas into the solvent tank 2 so that the solvent in the solvent tank 2 is transported to the nozzle 9. However, when the solvent in the solvent tank 2 is transported to the nozzle 9 under the action of the first gas source 1, the solvent will be mixed with gas during the transportation process, which makes it difficult to control the amount of water sprayed from the nozzle 9. If the amount of water sprayed is too large, it is easy to leave residue on the surface of the product after wiping with a lint-free cloth. If the amount of water sprayed is too small, the lint-free cloth is easy to fail to effectively wipe away dirt. Therefore, in this embodiment, while the nozzle 9 sprays out solvent, the supply of solvent from the solvent tank 2 to the nozzle 9 is blocked, thereby preventing the gas mixed in the solvent from being transported to the nozzle 9, and thus controlling the amount of water sprayed from the nozzle 9.

[0049] Specifically, the spraying device further includes a buffer section 3, a pressure application section 4, a first sealing section 5, and a second sealing section 6. The buffer section 3 has a buffer chamber 31, and the buffer section 3 is provided with an inlet 34 and an outlet 35. The solvent tank 2 is connected to the buffer chamber 31 through the inlet 34, and the nozzle 9 is connected to the buffer chamber 31 through the outlet 35. The pressure application section 4 is provided in the buffer chamber 31 and is used to provide positive pressure to the buffer chamber 31 so that the solvent in the buffer chamber 31 is output from the outlet 35. The first sealing section 5 is provided at the outlet 35 to block or open the outlet 35. The second sealing section 6 is provided at the inlet 34 to block or open the inlet 34, and one of the inlet 34 and the outlet 35 can be opened selectively.

[0050] Understandably, the solvent is delivered to the buffer chamber 31 by the first gas source 1. After the solvent in the buffer chamber 31 is buffered to a preset volume, the preset solvent is determined according to the actual working conditions and is not specifically limited here. The inlet 34 is closed by the second sealing part 6, and the outlet 35 is opened by the first sealing part 5. Then, under the action of the pressure applying part 4, positive pressure is provided to the buffer chamber 31 to output the solvent in the buffer chamber 31 to the nozzle 9. This setting can avoid the gas output by the first gas source 1 from affecting the volume of solvent sprayed by the nozzle 9 when the nozzle 9 sprays solvent, so as to accurately control the quantitative spraying of solvent by the nozzle 9.

[0051] It should be noted that the solvent is a cleaning medium in the prior art, such as water or cleaning fluid, and no specific restrictions are made here.

[0052] Furthermore, the first sealing section 5 includes a guide rod 51 and a driving member 52. The guide rod 51 is movably connected to the buffer section 3 so that the sealing end of the guide rod 51 can be inserted into the buffer cavity 31 to block the outlet 35. The driving member 52 is connected to the other end of the guide rod 51 and is configured to drive the guide rod 51 to move. It can be understood that when the solvent tank 2 delivers solvent to the buffer cavity 31, the driving member 52 drives the guide rod 51 to move to block the outlet 35, thereby ensuring that the buffer cavity 31 contains a certain amount of solvent.

[0053] Specifically, the buffer unit 3 is provided with a sliding cavity 33, and the guide rod 51 is slidably disposed in the sliding cavity 33 and passes through the sliding cavity 33; the driving component 52 is a second air source, which is connected to the sliding cavity 33 and configured to provide positive pressure to the sliding cavity 33. In practical applications, when the solvent tank 2 delivers solvent to the buffer cavity 31, the second air source provides positive pressure to the sliding cavity 33, thereby pushing the guide rod 51 to slide and maintain the state of blocking the outlet 35. After the solvent is buffered, the second sealing part 6 blocks the inlet 34, and the pressurizing part 4 provides positive pressure to the buffer cavity 31. The solvent is pushed into the liquid flow channel, thereby increasing the hydraulic pressure in the liquid flow channel. At this time, the second air source stops providing positive pressure to the sliding cavity 33 so that the air pressure in the sliding cavity 33 is less than the hydraulic pressure in the buffer cavity 31, thereby resetting the guide rod 51 to complete the output of the solvent.

[0054] In this embodiment, along the solvent output direction, the buffer chamber 31 includes a first flow channel 311, a second flow channel 312, and a third flow channel 313 arranged vertically in sequence. The first flow channel 311 communicates with the inlet 34, and the third flow channel 313 communicates with the outlet 35. A sealing seat 32 adapted to the sealing end is provided in the second flow channel 312, and the sealing end is not higher than the third flow channel 313. This arrangement allows the solvent to apply a pushing force to the guide rod 51 when it is pushed away from the sealing seat 32, so as to facilitate the pushing of the guide rod 51 away from the sealing seat 32.

[0055] Furthermore, the sealing end is not higher than the third flow channel 313. Understandably, when the second flow channel 312 needs to be blocked, the sealing end is embedded in the sealing seat 32. In this case, the sealing end is below the third flow channel 313 to improve the blocking effect on the second flow channel 312. When the second flow channel 312 does not need to be blocked, the sealing end is detached from the sealing seat 32. In this case, the sealing end is preferably flush with the third flow channel 313, that is, the end wall of the sealing end is flush with the third flow channel 313, to ensure that the solvent can be discharged in a timely manner.

[0056] In this embodiment, the pressure applying part 4 is a piston rod, which is slidably disposed inside the buffer chamber 31 and divides the buffer chamber 31 into a rod chamber and a rodless chamber. The inlet 34 and outlet 35 are both connected to the rodless chamber, and the second gas source is connected to the rod chamber. The first sealing part 5 also includes a solenoid valve 53, which is electrically connected to the second gas source to provide positive pressure to the rod chamber or the sliding chamber 33. It is understood that a groove is provided on the outer peripheral wall of the piston rod, and the inner wall of the groove and the cavity wall of the buffer chamber 31 form the rod chamber. The end of the piston rod and the sealing chamber form the rodless chamber. When the second gas source supplies gas into the rod chamber, it can push the piston rod to slide, thereby compressing the space of the rodless chamber and increasing the pressure value inside the rodless chamber.

[0057] In practical applications, the gas output from the second gas source passes through solenoid valve 53. Solenoid valve 53 selects whether to deliver the gas to the sliding chamber 33 or the rod chamber based on the actual operating conditions. For example, when the rodless chamber needs to be sealed, solenoid valve 53 controls the gas delivery to the sliding chamber 33 to push the guide rod 51 into the sealing seat 32. At this time, as solvent enters the rodless chamber, the solvent pushes the piston rod to slide, increasing the volume of the rodless chamber. Conversely, when solvent needs to be sprayed, solenoid valve 53 controls the gas delivery to the rod chamber to push the piston rod to slide, thereby compressing the space of the rodless chamber and increasing the pressure value within the rodless chamber.

[0058] In some other feasible embodiments, the pressure application part 4 includes a baffle and a cylinder. One end of the buffer chamber 31 is provided with an opening. The baffle is provided at the opening to seal the buffer chamber 31. The baffle is also provided on the piston rod of the cylinder. Under the action of the cylinder, the baffle can be moved, thereby changing the volume of the buffer chamber 31. When the volume of the buffer chamber 31 decreases, the pressure value inside the buffer chamber 31 increases, so as to facilitate the output of the solvent.

[0059] To ensure that the volume sprayed from the nozzle 9 can fully wet the lint-free cloth, in this embodiment, the spraying device further includes a third gas source 7, which is connected to the nozzle 9 to supply gas to the nozzle 9, thereby dispersing the solvent and allowing it to be sprayed out in a mist form. If the gas pressure supplied by the third gas source 7 is greater than the gas pressure supplied by the first gas source 1, some solvent may remain in the gas flow channel due to the pressure difference, thus affecting the spray volume of the nozzle 9. Therefore, in this embodiment, the gas pressure supplied by the third gas source 7 to the nozzle 9 is less than the gas pressure supplied by the first gas source 1 to the solvent tank 2. This setting further ensures that the solvent can be quantitatively output.

[0060] To facilitate the control of the air pressure delivered by the first air source 1 and the second air source, the liquid spraying device also includes two pressure reducing valves 8, which are respectively installed in the air paths of the first air source 1 and the second air source.

[0061] In this embodiment, the second sealing part 6 is an on / off valve, and the on / off valve is electrically connected to the first sealing part 5. It can be understood that when the first sealing part 5 closes the outlet 35, it sends a feedback signal to the on / off valve to open the inlet 34.

[0062] Based on the above, this embodiment also proposes a liquid spraying method using the above-mentioned liquid spraying device, which includes:

[0063] Close the first sealing section 5 and open the second sealing section 6 to allow the first gas source 1 to input gas into the solvent tank 2, and transport the solvent in the solvent tank 2 to the buffer chamber 31.

[0064] While opening the first sealing section 5 and closing the second sealing section 6, the pressure application section 4 provides positive pressure to the buffer chamber 31 to deliver the solvent in the buffer chamber 31 to the nozzle 9;

[0065] While closing the first sealing section 5 and opening the second sealing section 6, the pressure section 4 stops providing positive pressure to the buffer chamber 31 so that the solvent in the solvent tank 2 can be transported to the buffer chamber 31 again.

[0066] Repeat the above steps.

[0067] Based on the above, this embodiment also proposes a 3C product surface cleaning system, including a wiping head and a spraying device as described above. The wiping head is used to fix the lint-free cloth, and the spraying device is arranged opposite to the lint-free cloth; this arrangement can avoid the gas output by the first gas source 1 from the nozzle 9 affecting the volume of solvent sprayed by the nozzle 9 when the nozzle 9 sprays solvent, so as to accurately control the amount of solvent sprayed by the nozzle 9, thereby improving the cleaning effect.

[0068] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A liquid spraying device, comprising a first gas source (1), a solvent tank (2), and a nozzle (9), wherein the solvent tank (2) is used to contain solvent, the first gas source (1) is connected to the solvent tank (2), the solvent tank (2) is connected to the nozzle (9), and the first gas source (1) is configured to supply gas into the solvent tank (2) so that the solvent in the solvent tank (2) is supplied to the nozzle (9), characterized in that, The liquid spraying device also includes: The buffer unit (3) has a buffer cavity (31), and the buffer unit (3) is provided with an inlet (34) and an outlet (35). The solvent tank (2) is connected to the buffer cavity (31) through the inlet (34), and the nozzle (9) is connected to the buffer cavity (31) through the outlet (35). A pressure application section (4) is provided in the buffer chamber (31) and is used to provide positive pressure to the buffer chamber (31) so that the solvent in the buffer chamber (31) is output from the outlet (35); The first sealing part (5) is disposed at the liquid outlet (35) to block or open the liquid outlet (35); The second sealing part (6) is disposed at the liquid inlet (34) to block or open the liquid inlet (34).

2. The spraying device according to claim 1, characterized in that, The first enclosure (5) includes: A guide rod (51) is movably connected to the buffer section (3) so that the sealing end of the guide rod (51) can be inserted into the buffer cavity (31) to block the liquid outlet (35); A drive member (52) is connected to the other end of the guide rod (51) and is configured to drive the guide rod (51) to move.

3. The spraying device according to claim 2, characterized in that, The buffer section (3) is provided with a sliding cavity (33), and the guide rod (51) is slidably disposed in the sliding cavity (33) and passes through the sliding cavity (33); The drive unit (52) is a second air source, which is connected to the sliding cavity (33) and configured to provide positive pressure to the sliding cavity (33).

4. The spraying device according to claim 3, characterized in that, Along the output direction of the solvent, the buffer chamber (31) includes a first flow channel (311), a second flow channel (312) and a third flow channel (313) arranged vertically in sequence. The first flow channel (311) is connected to the inlet (34) and the third flow channel (313) is connected to the outlet (35).

5. The spraying device according to claim 4, characterized in that, The second flow channel (312) is provided with a sealing seat (32) adapted to the sealing end, and the sealing end is not higher than the third flow channel (313).

6. The spraying device according to claim 4, characterized in that, The pressure application part (4) is a piston rod, which is slidably disposed inside the first flow channel (311) and divides the first flow channel (311) into a rod chamber and a rodless chamber. The liquid inlet (34) is connected to the rodless chamber, and the second gas source is connected to the rod chamber. The first sealing part (5) also includes a solenoid valve (53), which is electrically connected to the second air source so that the second air source provides positive pressure to the rod chamber or the sliding chamber (33).

7. The spraying device according to claim 1, characterized in that, The spraying device further includes a third gas source (7), which is connected to the nozzle (9) to supply gas to the nozzle (9), and the gas pressure supplied by the third gas source (7) to the nozzle (9) is less than the gas pressure supplied by the first gas source (1) to the solvent tank (2).

8. The liquid spraying device according to claim 1, characterized in that, The second sealing part (6) is an on / off valve, and the on / off valve is electrically connected to the first sealing part (5).

9. A liquid spraying method using the liquid spraying device according to any one of claims 1-8, characterized in that, include: Close the first sealing section (5) and open the second sealing section (6) so that the first gas source (1) inputs gas into the solvent tank (2) to transport the solvent in the solvent tank (2) to the buffer chamber (31); While opening the first sealing section (5) and closing the second sealing section (6), the pressure application section (4) provides positive pressure to the buffer chamber (31) to deliver the solvent in the buffer chamber (31) to the nozzle (9).

10. A surface cleaning system for 3C products, characterized in that, include: A wiping head, used to hold a lint-free cloth in place; The liquid spraying device as described in any one of claims 1-8, wherein the liquid spraying device is disposed opposite to the lint-free cloth.

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