Automatic cleaning system for FPC copper foil evaporation
By designing an automatic cleaning system for FPC copper foil evaporation, the high-pressure hot air flow blown out of the air knife for heating and drying and air flow sweeping, the problem of removing residues and contaminants on the surface of FPC is solved, and rapid drying and efficient cleaning are achieved, and cleaning is avoided.
Patent Information
- Application Number
- CN202421610635.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-09
AI Technical Summary
During the evaporation process of FPC copper foil, copper particles, oxides or other tiny impurities may be attached to the surface of the substrate, affecting the subsequent process, and if the oil, dust and other pollutants in the processing environment are not removed, it may affect the function and reliability of the FPC.
Design an automatic cleaning system, including cleaning module, feeding module and drying module. The cleaning module includes a solvent cleaning tank, an ultrasonic cleaning tank and a deionized water cleaning tank. The feeding module and the drying module are located above and on both sides of the cleaning tank respectively. The drying module heats and drys the FPC surface through a high-pressure hot air flow blown by the air knife, and scrapes the remaining cleaning liquid on the surface by a gas flow scraping.
It realizes rapid drying of FPC after cleaning in each cleaning tank, avoids contamination of cleaning liquid in the cleaning tank, improves the automatic cleaning efficiency of FPC, and reduces the pollution of chemical lotions to the environment during the cleaning process.
Smart Images
Figure CN222928588U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a circuit board processing device, in particular to an automatic cleaning system for FPC copper foil evaporation plating. Background Art
[0002] Flexible printed circuit board, abbreviated as FPC, is a highly reliable and excellent flexible printed circuit board made of polyimide or polyester film. FPC copper foil evaporation plating is a process technology of depositing a layer of copper on a flexible substrate (such as polyimide film). In this process, through physical vapor deposition (PVD), copper is deposited on the substrate surface in the form of vapor to form a uniform copper film.
[0003] During the evaporation plating process, some incompletely evaporated copper particles, oxides or other minute impurities may adhere to the substrate surface, and these residues will affect the subsequent process. Moreover, pollutants such as grease, dust, and fingerprints that may exist in the processing environment, if not removed thoroughly, may affect the function and reliability of the FPC. Therefore, surface cleaning is often required after FPC copper foil evaporation plating, and conventional cleaning methods mostly adopt a composite cleaning of solvent cleaning, ultrasonic cleaning, and deionized water cleaning. Although this multi-composite cleaning method has good effects, as the FPC flows through each cleaning tank, the chemical cleaning agents contaminated on the FPC surface will also contaminate the cleaning liquid in each tank. Summary of the Utility Model
[0004] Based on this, it is necessary to provide an automatic cleaning system for FPC copper foil evaporation plating in view of the deficiencies in the prior art.
[0005] An automatic cleaning system for FPC copper foil evaporation plating includes a cleaning module, a feeding module, and a drying module. The cleaning module includes a cleaning table and a solvent cleaning tank, an ultrasonic cleaning tank, and a deionized water cleaning tank sequentially arranged on the cleaning table. The feeding module and the drying module are both installed on the cleaning table, and the feeding module and the drying module are respectively located above and on both sides of the solvent cleaning tank, the ultrasonic cleaning tank, and the deionized water cleaning tank. The drying module includes a mounting seat, a push-pull cylinder, a drying box, an air knife, and several auxiliary sliding rods. The mounting plate stands on the cleaning table. The push-pull cylinder passes through the mounting seat. The drying box is installed at the inner end of the push-pull cylinder and can be driven by the push-pull cylinder to move back and forth. The drying box is designed with openings at the inner side and the lower end, and a lifting slide rail is also arranged inside it. The air knife is snap-fitted on the lifting slide rail and can move up and down. Several of the auxiliary sliding rods are movably passed through the mounting seat, and one end of each of them is fixedly connected to the outer side of the drying box.
[0006] Further, a horizontal slide rail is also arranged on the cleaning table. The mounting seat is snap-fitted in the horizontal slide rail and can be slid and adjusted left and right.
[0007] Furthermore, the air outlet of the air knife is designed to be inclined downward.
[0008] Furthermore, the cleaning module further includes a number of stirring fan blades, and a number of the stirring fan blades are all installed at the bottom of the solvent cleaning tank.
[0009] Furthermore, the cleaning module further includes a spraying pump group, and the spraying pump group is symmetrically installed in the deionized water cleaning tank. The spraying pump group includes a lifting frame, a telescopic adjusting rod, a mounting plate, a number of nozzles and a high-pressure pump. The lifting frame is installed at the bottom of the deionized water cleaning tank, the telescopic adjusting rod is installed on the lifting frame and can be driven by the lifting frame to move up and down, the mounting plate is installed at the inner end of the telescopic adjusting rod, a number of the nozzles are arranged in sequence on the inner side of the mounting plate, one end of the high-pressure pump is communicated with the deionized water cleaning tank, and the other end is connected with a number of nozzles.
[0010] Furthermore, the cleaning module further includes a number of sliding baffles, and a number of the sliding baffles are respectively clamped and installed on the inner side walls of the solvent cleaning tank, the ultrasonic cleaning tank and the deionized water cleaning tank and can slide horizontally.
[0011] Furthermore, the feeding module includes a feeding frame, a lifting cylinder, a fixture seat and a feeding fixture. The feeding frame stands on the cleaning table, the upper end of the lifting cylinder is clamped and installed on the feeding frame and can slide left and right, the fixture seat is fixedly installed at the lower end of the lifting cylinder and can be driven by the lifting cylinder to move up and down, and a horizontal card slot is further provided at the bottom of the fixture seat. The feeding fixture is clamped and installed in the horizontal card slot and is limited and fixed by the fixture seat.
[0012] In summary, the beneficial effects of the automatic cleaning system for FPC copper foil evaporation plating of the present utility model are as follows: by designing drying components on both sides of each cleaning tank, using the high-pressure hot air flow blown by the air knife to heat and dry the surface of the FPC, and at the same time, the air flow can also scrape off the residual cleaning liquid on the surface through scraping, so as to realize the rapid drying of the FPC after cleaning in each cleaning tank, effectively avoiding the problem of cleaning liquid pollution in the cleaning tank; the design of stirring fan blades and spraying pump groups in the cleaning module can respectively improve the cleaning effects of solvent cleaning and deionized water cleaning; the detachable structure of the fixture seat and the feeding fixture is more convenient for the loading and unloading operation of the FPC, further improving the automatic cleaning efficiency of the FPC; the present utility model has strong practicability and has strong popularization significance. Description of the Drawings
[0013] Figure 1 is a schematic structural diagram of an automatic cleaning system for FPC copper foil evaporation plating of the present utility model;
[0014] Figure 2 is Figure 1 the cross-sectional structural diagram of the cleaning module in
[0015] Figure 3 is Figure 2 a schematic exploded view of the spraying pump group in
[0016] Figure 4 is Figure 1 a schematic exploded view of the feeding module in
[0017] Figure 5 is Figure 1 a schematic exploded view of the drying module in Detailed implementation manners
[0018] In order to make the purpose, technical solutions and advantages of the utility model more clear and understandable, the following further details the utility model in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.
[0019] As Figures 1 to 5 shown, the utility model provides an automatic cleaning system 100 for FPC copper foil evaporation plating, which includes a cleaning module 10, a feeding module 20 and a drying module 30. The cleaning module 10 includes a cleaning table 11 and a solvent cleaning tank 12, an ultrasonic cleaning tank 13, and a deionized water cleaning tank 14 that are sequentially arranged on the cleaning table 11. The feeding module 20 and the drying module 30 are both installed on the cleaning table 11, and the feeding module 20 and the drying module 30 are respectively located above and on both sides of the solvent cleaning tank 12, the ultrasonic cleaning tank 13, and the deionized water cleaning tank 14. It can be understood that in the utility model, there are also several gas supply structures, power supply structures, driving devices, heating devices, ultrasonic cleaning devices, sensors and control systems. Since they are all conventional technical contents in this technical field, they will not be elaborated here.
[0020] The cleaning module 10 further includes several stirring fan blades 15, and several of the stirring fan blades 15 are all installed at the bottom of the solvent cleaning tank 12. In this embodiment, several stirring fan blades 15 at the bottom of the solvent cleaning tank 12 are symmetrically distributed in the front and back and left and right, and the stirring fan blades 15 on the front and back and left and right sides rotate in opposite directions to each other. The multiple stirring fan blades 15 stir the solvent in the tank so that it can come into contact with the surface of the FPC more fully, thereby more thoroughly dissolving and cleaning the residues on the surface of the FPC. The eddy currents formed by the stirring fan blades 15 rotating in opposite directions will cut the flow velocity of each other, avoiding the formation of a large amount of foam due to the too high flow velocity of the solvent in the tank and affecting the cleaning effect.
[0021] The cleaning module 10 further includes a spraying pump group 16, which is symmetrically installed in the deionized water cleaning tank 14. The spraying pump group 16 includes a lifting frame 161, a telescopic adjusting rod 162, a mounting plate 163, a plurality of nozzles 164, and a high-pressure pump (not shown in the figure). The lifting frame 161 is installed at the bottom of the deionized water cleaning tank 14. The telescopic adjusting rod 162 is installed on the lifting frame 161 and can be driven by the lifting frame 161 to move up and down. The mounting plate 163 is installed at the inner end of the telescopic adjusting rod 162. A plurality of the nozzles 164 are arranged in sequence on the inner side of the mounting plate 163. One end of the high-pressure pump is communicated with the deionized water cleaning tank 14, and the other end is connected to a plurality of nozzles 164.
[0022] The spraying pump group 16 can pump deionized water from the tank to a plurality of nozzles 164 through the high-pressure pump, and then the nozzles 164 spray high-pressure water flow onto the surface of the FPC, so as to perform high-efficiency and high-effect cleaning operations. During the cleaning process, the lifting frame 161 can also drive the nozzles 164 to move up and down horizontally, so that the water flow can sequentially clean each part of the FPC in the vertical direction. The telescopic adjusting rod 162 can adjust the distance between the nozzles 164 and the surface of the FPC to ensure that the water pressure impact on the surface of the FPC does not exceed the standard, and avoid the problem of FPC damage caused by water flow impact.
[0023] The cleaning module 10 further includes a plurality of sliding baffles 17, which are respectively snap-fitted on the inner side walls of the solvent cleaning tank 12, the ultrasonic cleaning tank 13, and the deionized water cleaning tank 14 and can slide horizontally. The horizontally slidable sliding baffles 17 can cover the openings of each cleaning tank during the cleaning process to make it in a nearly sealed state. Such a design can effectively avoid phenomena such as splashing or excessive volatilization of the cleaning liquid in the cleaning tank during the cleaning process, which can not only protect the processing environment but also reduce the unnecessary loss of the cleaning liquid.
[0024] The feeding module 20 includes a feeding frame 21, a lifting cylinder 22, a fixture seat 23, and a feeding fixture 24. The feeding frame 21 stands on the cleaning table 11. The upper end of the lifting cylinder 22 is snap-fitted on the feeding frame 21 and can slide left and right. The fixture seat 23 is fixedly installed at the lower end of the lifting cylinder 22 and can be driven by the lifting cylinder 22 to move up and down. A horizontal card slot 231 is also provided at the bottom of the fixture seat 23. The feeding fixture 24 is snap-fitted in the horizontal card slot 231 and is limited and fixed by the fixture seat 23. The fixture seat 23 with the horizontal card slot 231 is movably snap-fitted with the feeding fixture 24. When FPC loading and unloading processing is required, only the feeding fixture 24 clamping the FPC needs to be installed on the fixture seat 23 or removed from the fixture seat 23, which greatly reduces the operation difficulty compared with the conventional clamping loading and unloading.
[0025] The drying module 30 includes a mounting base 31, a push-pull cylinder 32, a drying box 33, an air knife 34 and a plurality of auxiliary sliding rods 35. The mounting plate 163 stands on the cleaning table 11. The push-pull cylinder 32 passes through the mounting base 31. The drying box 33 is installed at the inner end of the push-pull cylinder 32 and can be driven by the push-pull cylinder 32 to move back and forth. The drying box 33 is designed with openings at the inner side and the lower end, and a lifting slide rail 331 is further provided inside it. The air knife 34 is snap-fitted on the lifting slide rail 331 and can move up and down. A plurality of the auxiliary sliding rods 35 are all movably passed through the mounting base 31, and one end of each of them is fixedly connected to the outer side of the drying box 33.
[0026] After the FPC is cleaned in the cleaning tank, it is first driven by the feeding module 20 to be lifted above the opening of the cleaning tank and horizontally corresponding to the drying modules 30 on both sides. Then the push-pull cylinder 32 pushes the drying box 33 to translate inward until the drying boxes 33 on both sides completely clamp and wrap the FPC in the middle. Then the air knife 34 inside the drying box 33 blows out dry hot air flow onto the surface of the FPC to quickly dry it, and the air knife 34 also moves downward from top to bottom during the process of blowing the air flow, so that the blown hot air flow also synchronously sweeps the surface of the FPC from top to bottom. The dry hot air flow can accelerate the evaporation of the liquid remaining on the surface of the FPC, and the top-down sweeping of the air flow can also drive the liquid to drip downward back into the cleaning tank. The combination of the two thus realizes the rapid drying of the FPC.
[0027] A horizontal slide rail 111 is further provided on the cleaning table 11. The mounting base 31 is snap-fitted in the horizontal slide rail 111 and can be slid left and right for adjustment. By designing the structure of the horizontal slide rail 111 and the slidable and adjustable drying module 30, one set of drying modules 30 can correspond to the drying work of multiple cleaning tanks, greatly optimizing the redundancy of the system modules. The air outlet of the air knife 34 is designed to be inclined downward. The downward-inclined air outlet makes the hot air flow generated by the air knife 34 also blow obliquely downward, which can further improve the drying effect.
[0028] In summary, the beneficial effects of the automatic cleaning system 100 for FPC copper foil evaporation plating of the present utility model are as follows: by designing drying components on both sides of each cleaning tank, using the high-pressure hot air flow blown by the air knife 34 to heat and dry the surface of the FPC, and at the same time the air flow can also scrape off the remaining cleaning liquid on the surface through sweeping, thereby realizing the rapid drying of the FPC after being cleaned in each cleaning tank, effectively avoiding the problem of pollution of the cleaning liquid in the cleaning tank; in the cleaning module 10, the design of the stirring fan blades 15 and the spraying pump group 16 can respectively improve the cleaning effects of solvent cleaning and deionized water cleaning; the detachable structure of the fixture seat 23 and the feeding fixture 24 is more convenient for the loading and unloading operation of the FPC, further improving the automatic cleaning efficiency of the FPC; the present utility model has strong practicability and has strong promotion significance.
[0029] The above-described embodiments merely represent one implementation manner of the utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.
Claims
1. An automatic cleaning system for FPC copper foil evaporation, characterized in that: It includes a cleaning module, a feeding module and a drying module, the cleaning module includes a cleaning table and a solvent cleaning tank, an ultrasonic cleaning tank and a deionized water cleaning tank which are arranged on the cleaning table in sequence, the feeding module and the drying module are both installed on the cleaning table, and the feeding module and the drying module are respectively located above and on both sides of the solvent cleaning tank, the ultrasonic cleaning tank and the deionized water cleaning tank; the drying module includes a mounting seat, a push-pull cylinder, a drying box, a wind knife and a plurality of auxiliary sliding rods, the mounting seat stands on the cleaning table, the push-pull cylinder is penetrated on the mounting seat, the drying box is installed on the inner side end of the push-pull cylinder and can be driven by the push-pull cylinder to move forward and backward, the drying box is designed with openings on the inner side and the lower end, and a lifting slide rail is also provided on the inner side thereof, the wind knife is clamped and installed on the lifting slide rail and can be movably lifted and lowered, and a plurality of the auxiliary sliding rods are movably penetrated on the mounting seat and one end thereof is fixedly connected to the outer side of the drying box.
2. The automatic cleaning system for FPC copper foil evaporation as claimed in claim 1, characterized in that: The cleaning table is also provided with a horizontal slide rail, and the mounting seat is mounted in the horizontal slide rail and can be slidably adjusted left and right.
3. The automatic cleaning system for FPC copper foil evaporation as claimed in claim 1, characterized in that: The air outlet of the wind knife is designed to be tilted downward.
4. The automatic cleaning system for FPC copper foil evaporation as claimed in claim 1, characterized in that: The cleaning module further comprises a plurality of stirring blades, and the plurality of stirring blades are all installed at the bottom of the solvent cleaning tank.
5. The automatic cleaning system for FPC copper foil evaporation as claimed in claim 1, characterized in that: The cleaning module also includes a spray pump group, which is symmetrically installed in the deionized water cleaning tank. The spray pump group includes a lifting frame, a telescopic adjustment rod, a mounting plate, a plurality of nozzles and a high-pressure pump; the lifting frame is installed at the bottom of the deionized water cleaning tank, the telescopic adjustment rod is installed on the lifting frame and can be moved up and down by the lifting frame, the mounting plate is installed at the inner end of the telescopic adjustment rod, and the plurality of nozzles are arranged in sequence on the inner side of the mounting plate, one end of the high-pressure pump is connected to the deionized water cleaning tank, and the other end is connected to the plurality of nozzles.
6. The automatic cleaning system for FPC copper foil evaporation as claimed in claim 1, characterized in that: The cleaning module further comprises a plurality of sliding baffles which are respectively mounted on the inner side walls of the solvent cleaning tank, the ultrasonic cleaning tank and the deionized water cleaning tank and can slide horizontally.
7. The automatic cleaning system for FPC copper foil evaporation as claimed in claim 1, characterized in that: The feeding module includes a feeding rack, a lifting cylinder, a clamp seat and a feeding clamp; the feeding rack stands on a cleaning table, the upper end of the lifting cylinder is clamped and installed on the feeding rack and can slide left and right, the clamp seat is fixedly installed on the lower end of the lifting cylinder and can be driven by the lifting cylinder to move up and down, and a horizontal slot is also provided at the bottom of the clamp seat, and the feeding clamp is clamped and installed in the horizontal slot and is fixed by the clamp seat.