System and method for recovering film stripping solution after flexible board line formation

Abstract

The application discloses a kind of soft board line forming post stripping solution recovery system and method, system includes the controller and stripping solution recovery device of communication connection;Controller is used to issue start instruction and addition instruction to stripping solution recovery device;Stripping solution recovery device is communicated with the discharge port of stripping tank, is used to receive the start instruction issued by controller, according to the stripping solution containing slag discharged by stripping tank to be recycled, and the stripping solution containing slag is filtered, and recycling stripping solution is obtained;Stripping solution recovery device is also communicated with the liquid injection port of stripping tank, also be used to receive the addition instruction issued by controller, according to the recycling stripping solution is added to the liquid injection port of stripping tank.The application does not change the main equipment and original process under the premise, utilizes stripping solution recovery device to collect the "waste" stripping solution generated in stripping process, and carries out filtration and reuse, can effectively save the input cost of stripping solution, while also can reduce wastewater treatment capacity.

Description

Technical Field

[0001] This invention relates to the field of flexible circuit board manufacturing technology, specifically to a system and method for recovering the film removal solution after flexible circuit board forming. Background Technology

[0002] As society's demands for informatization and intelligence continue to increase and permeate almost every industry, the application of FPC (Flexible Printed Circuit Board) in electronic products is becoming increasingly widespread.

[0003] In the application of FPCs in electronic products, circuit forming is an essential step, and after circuit forming, a stripping solution is usually used to remove the dry film from the flexible circuit board. At present, small aperture design has become an inevitable trend in the circuit forming design of flexible circuit boards. The smaller the aperture, the more difficult it is to remove the dry film inside the aperture after circuit forming. Traditional inorganic alkaline stripping solutions are no longer sufficient, and new and expensive small aperture stripping solutions are required to remove the dry film inside the aperture (the cost of small aperture stripping solutions is 1 to 1.5 times higher than that of ordinary stripping solutions). Therefore, cost control of stripping solutions is becoming increasingly important.

[0004] However, in the current flexographic board manufacturing process, various factors make it difficult to control the cost of the stripping solution, mainly including the following situations:

[0005] 1. When the equipment is in standby mode, the film-removing solution in the film-removing tank is easily lost instantly;

[0006] 2. During the production process, if the amount of descaling solution replenished in the descaling tank decreases, it can easily cause the tank liquid level to drop, which may lead to some potential risks (such as incomplete descaling of batch products due to the dry running of the descaling solution spray pump, damage to the spray pump due to the dry running, and delivery delays caused by abnormalities in the flexible plate products). Therefore, it is necessary to replenish more fresh descaling solution to the descaling tank in a timely manner.

[0007] Therefore, the cost of the film removal solution after the flexible circuit board is formed is currently difficult to control, resulting in a large overall production cost. Summary of the Invention

[0008] In view of this, the present invention provides a system and method for recovering the stripping solution after flexible circuit board molding, so as to solve the problem that the cost of the stripping solution after flexible circuit board molding is difficult to control, resulting in a large overall production cost.

[0009] This invention provides a system for recovering the film removal liquid after flexible circuit board molding, the system including a controller and a film removal liquid recovery device connected by communication;

[0010] The controller is used to issue start and add commands to the membrane removal liquid recovery device;

[0011] The membrane removal liquid recovery device is connected to the discharge port of the membrane removal tank and is used to receive the start command issued by the controller, recover the membrane removal liquid containing glue residue discharged from the membrane removal tank according to the start command, and filter the membrane removal liquid containing glue residue to obtain the recovered membrane removal liquid.

[0012] The membrane removal liquid recovery device is also connected to the inlet of the membrane removal tank and is also used to receive the addition command issued by the controller and add the recovered membrane removal liquid to the inlet of the membrane removal tank according to the addition command.

[0013] Optionally, the membrane removal liquid recovery device includes a pneumatic diaphragm pump, a filter assembly, a glue residue storage tank, a liquid storage tank, and a magnetic pump;

[0014] The pneumatic diaphragm pump is connected to the discharge port of the membrane removal tank and communicates with the controller. It is used to recover the membrane removal liquid containing adhesive residue discharged from the membrane removal tank according to the start command, and to draw the membrane removal liquid containing adhesive residue into the filter assembly.

[0015] The filter assembly is connected to the pneumatic diaphragm pump and is used to filter the membrane removal liquid containing adhesive residue pumped by the pneumatic diaphragm pump to obtain the filtered adhesive residue and the recycled membrane removal liquid.

[0016] The glue residue storage tank is connected to the filter assembly and is used to store the glue residue;

[0017] The liquid storage tank is connected to the filtration assembly and is used to store the recycled membrane removal liquid;

[0018] The magnetic pump is connected to the inlet of both the liquid storage tank and the defilm removal tank, and is communicatively connected to the controller. It is used to draw the recycled defilm removal liquid stored in the liquid storage tank into the inlet of the defilm removal tank according to the addition command.

[0019] Optionally, the membrane removal fluid recovery device further includes a level gauge disposed in the liquid storage tank;

[0020] The level gauge is communicatively connected to the controller and is used to detect the level of the recycled defilm removal liquid stored in the liquid storage tank, obtain level data, and send the level data to the controller.

[0021] The controller is further configured to determine whether the liquid level of the recycled membrane removal liquid stored in the liquid storage tank has reached a preset maximum liquid level based on the liquid level data; when the liquid level of the recycled membrane removal liquid stored in the liquid storage tank reaches the preset maximum liquid level, a stop command is sent to the pneumatic diaphragm pump.

[0022] The pneumatic diaphragm pump is also used to stop pumping the descaling liquid containing adhesive residue into the filter assembly when the stop command is received.

[0023] Optionally, the filter assembly includes a glue residue filter drum and a glue residue filter tank;

[0024] One end of the glue residue filter roller is connected to the pneumatic diaphragm pump, and the other end is connected to the glue residue filter tank. The glue residue filter tank is also connected to the glue residue storage tank and the liquid storage tank, respectively. The glue residue storage tank is located below the glue residue filter roller, and the liquid storage tank is located below the glue residue filter tank.

[0025] Optionally, the membrane removal solution recovery device further includes:

[0026] A first switching valve, located between the discharge outlet and the wastewater treatment center, is used to control the flow of the descaling liquid containing adhesive residue discharged from the discharge outlet into the wastewater treatment center when the pneumatic diaphragm pump receives the start command; and

[0027] A second switching valve is provided between the discharge port and the pneumatic diaphragm pump, which is used to control the flow of the descaling liquid containing adhesive residue discharged from the discharge port into the pneumatic diaphragm pump when the pneumatic diaphragm pump receives the start command.

[0028] Optionally, the membrane removal solution recovery device further includes:

[0029] A third switching valve and a flow valve are provided between the magnetic pump and the liquid inlet;

[0030] The third switching valve is used to control the flow of the recycled defilm removal liquid drawn by the magnetic pump into the inlet; the flow valve is used to control the flow rate of the recycled defilm removal liquid flowing into the inlet.

[0031] Optionally, the membrane removal solution recovery device further includes:

[0032] A flow meter is used to detect the flow rate of the recycled membrane removal liquid flowing into the inlet, obtain flow data, and display it.

[0033] Optionally, the system further includes:

[0034] The waste liquid recovery device is connected to both the membrane removal tank and the membrane removal liquid recovery device, and is used to collect the waste liquid in the membrane removal tank and the membrane removal liquid recovery device.

[0035] Furthermore, the present invention also provides a method for recovering the stripping solution after flexible circuit board molding, which uses the aforementioned stripping solution recovery system for flexible circuit board molding to recover the stripping solution, including:

[0036] Using the controller, start-up and add commands are sent to the membrane stripping solution recovery unit;

[0037] Using a membrane removal liquid recovery device, the device receives the start command issued by the controller, recovers the membrane removal liquid containing glue residue discharged from the discharge port of the membrane removal tank according to the start command, and filters the membrane removal liquid containing glue residue to obtain recovered membrane removal liquid.

[0038] Using the membrane removal liquid recovery device, the device receives the addition command issued by the controller and adds the recovered membrane removal liquid to the inlet of the membrane removal tank according to the addition command.

[0039] Optionally, the membrane removal liquid recovery device includes a pneumatic diaphragm pump, a filter assembly, a glue residue storage tank, a liquid storage tank, and a magnetic pump;

[0040] The membrane removal liquid recovery device receives the start command issued by the controller, recovers the membrane removal liquid containing adhesive residue discharged from the discharge port of the membrane removal tank according to the start command, and filters the membrane removal liquid containing adhesive residue to obtain recovered membrane removal liquid, including:

[0041] Using the pneumatic diaphragm pump, the start command is received, and the membrane removal liquid containing adhesive residue discharged from the membrane removal tank is recovered according to the start command, and the membrane removal liquid containing adhesive residue is drawn into the filter assembly;

[0042] Using the aforementioned filtration assembly, the membrane removal liquid containing adhesive residue pumped by the pneumatic diaphragm pump is filtered to obtain filtered adhesive residue and the recycled membrane removal liquid.

[0043] The adhesive residue is stored in the adhesive residue storage tank, and the recycled film removal solution is stored in the liquid storage tank.

[0044] The step of using the membrane removal solution recovery device to receive the addition command issued by the controller and adding the recovered membrane removal solution to the inlet of the membrane removal tank according to the addition command includes:

[0045] Using the magnetic pump, the addition command is received, and the recycled defilm removal liquid stored in the liquid storage tank is drawn into the liquid inlet of the defilm removal tank according to the addition command.

[0046] Optionally, the membrane removal liquid recovery device further includes a stirrer disposed in the liquid storage tank;

[0047] After storing the recycled film-removing solution in the liquid storage tank, the process further includes:

[0048] The stirrer is used to stir the recycled defilming solution stored in the liquid storage tank.

[0049] Optionally, the membrane removal fluid recovery device further includes a level gauge disposed in the liquid storage tank;

[0050] After storing the recycled film-removing solution in the liquid storage tank, the process further includes:

[0051] The liquid level gauge is used to detect the liquid level of the recycled defilm removal liquid stored in the liquid storage tank to obtain liquid level data; and the liquid level data is sent to the controller.

[0052] Using the controller, it is determined whether the liquid level of the recycled membrane removal liquid stored in the liquid storage tank has reached the preset maximum liquid level based on the liquid level data; when the liquid level of the recycled membrane removal liquid stored in the liquid storage tank reaches the preset maximum liquid level, a stop command is sent to the pneumatic diaphragm pump.

[0053] When the pneumatic diaphragm pump receives the stop command, it controls the pumping of the descaling liquid containing adhesive residue into the filter assembly to stop.

[0054] Optionally, the membrane removal liquid recovery device further includes a first switching valve disposed between the discharge port and the wastewater treatment center and a second switching valve disposed between the discharge port and the pneumatic diaphragm pump;

[0055] Before the step of recovering the adhesive residue-containing demembranes from the demembranes according to the start command and drawing the adhesive residue-containing demembranes into the filter assembly, the method further includes:

[0056] When the pneumatic diaphragm pump receives the start command, the first switching valve is used to control the sludge-containing membrane removal liquid discharged from the discharge port to prevent it from flowing into the wastewater treatment center.

[0057] The second switching valve is used to control the flow of the descaling liquid containing adhesive residue discharged from the discharge port into the pneumatic diaphragm pump.

[0058] Optionally, the membrane removal liquid recovery device further includes a third switching valve and a flow valve disposed between the magnetic pump and the liquid inlet;

[0059] Before the step of drawing the recovered defilm removal solution stored in the liquid storage tank into the inlet of the defilm removal tank according to the addition instruction, the method further includes:

[0060] The third switching valve is used to control the flow of the recycled defilm removal liquid drawn by the magnetic pump into the inlet; and the flow valve is used to control the flow rate of the recycled defilm removal liquid flowing into the inlet.

[0061] The beneficial effects of this invention are as follows: The stripping tank is the main equipment used in the stripping process after flexible circuit board forming. A stripping liquid recovery device is installed between the discharge port (for discharging waste liquid generated in the stripping tank, including maintenance liquid and stripping liquid containing adhesive residue) and the inlet port (for adding fresh stripping liquid). Through the recovery and filtration of this device, the stripping liquid containing adhesive residue generated in the stripping process can be recycled and reused. The recovered and filtered stripping liquid is then added back to the inlet port as fresh stripping liquid for use in the stripping process after flexible circuit board forming. The recovery process of the stripping liquid recovery device is based on the start command issued by the controller, allowing for recovery based on the actual stripping process conditions. The addition process of the recovered stripping liquid is based on the addition command issued by the controller, allowing for the addition of stripping liquid according to the actual needs of the stripping tank.

[0062] The present invention provides a system and method for recovering stripping solution after flexible circuit board molding. Without changing the main equipment and the original process, the system and method can collect the "waste" stripping solution generated in the stripping process using a stripping solution recovery device. By filtering and reusing the "waste" stripping solution, the system can effectively save the input cost of the stripping solution, effectively control the cost of the stripping solution, reduce the potential risks caused by the difficulty in controlling the cost of the stripping solution, ensure the stable operation of the production process, and reduce the amount of wastewater to be treated. Attached Figure Description

[0063] The features and advantages of the invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the invention in any way. In the drawings:

[0064] Figure 1 This diagram shows a structural diagram of a system for recovering film removal liquid after flexible circuit board molding according to Embodiment 1 of the present invention;

[0065] Figure 2 A structural diagram of a membrane removal liquid recovery device according to Embodiment 1 of the present invention is shown;

[0066] Figure 3 A structural diagram of another membrane removal liquid recovery device according to Embodiment 1 of the present invention is shown;

[0067] Figure 4 The flowchart illustrates a method for recovering the film removal solution after flexible circuit board molding according to Embodiment 2 of the present invention.

[0068] Explanation of reference numerals in the attached figures:

[0069] 1. Device body; 2. Pneumatic diaphragm pump; 3. Filter assembly; 4. Glue residue storage tank; 5. Liquid storage tank; 6. Magnetic pump; 7. Flow meter; 8. First pipeline; 9. Second pipeline; 10. Third pipeline; 11. First switching valve; 12. Second switching valve; 13. Third switching valve; 14. Flow valve; 31. Glue residue filter drum; 32. Glue residue filter tank; 51. Agitator; 52. Liquid level gauge. Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0071] Example 1

[0072] A system for recovering the film removal solution after flexible circuit board molding, such as Figure 1 As shown, the system includes a controller and a membrane removal solution recovery device that are connected in communication.

[0073] The controller is used to issue start and add commands to the membrane removal liquid recovery device;

[0074] The membrane removal liquid recovery device is connected to the discharge port of the membrane removal tank and is used to receive the start command issued by the controller, recover the membrane removal liquid containing glue residue discharged from the membrane removal tank according to the start command, and filter the membrane removal liquid containing glue residue to obtain the recovered membrane removal liquid.

[0075] The membrane removal liquid recovery device is also connected to the inlet of the membrane removal tank and is also used to receive the addition command issued by the controller and add the recovered membrane removal liquid to the inlet of the membrane removal tank according to the addition command.

[0076] The stripping tank is the main equipment used in the stripping process after flexible circuit board forming. A stripping solution recovery device is installed between the discharge port (for discharging waste liquid generated in the stripping tank, including maintenance fluid and stripping solution containing adhesive residue) and the inlet port (for adding fresh stripping solution). Through the recovery and filtration of this device, the stripping solution containing adhesive residue generated in the stripping process can be recycled and reused. The recovered and filtered stripping solution is then added back to the inlet port as fresh stripping solution for use in the stripping process after flexible circuit board forming. The recovery process of the stripping solution recovery device is initiated by a start command issued by the controller and can be performed according to the actual stripping process conditions. The addition process of the recovered stripping solution is initiated by an add command issued by the controller and can be performed according to the actual amount of stripping solution required by the stripping tank.

[0077] The flexible circuit board forming process stripping solution recovery system of the present invention can collect the "waste" stripping solution generated in the stripping process without changing the main equipment and the original process. By filtering and reusing the "waste" stripping solution, the input cost of stripping solution can be effectively saved, the cost of stripping solution can be effectively controlled, and the potential risks caused by the difficulty in controlling the cost of stripping solution can be reduced, ensuring the stable operation of the production process, and reducing the amount of wastewater to be treated.

[0078] In the actual manufacturing process of flexible printed circuit boards, there are multiple overflow channels in the stripping section, such as... Figure 1 The cascading overflow tanks #1, #2, #3, and #4 are collectively referred to as the membrane removal tanks. The discharge port is located on tank #4. Tanks #2 and #4 are the final tanks where the membrane removal solution needs to be added and recycled; therefore, both of these tanks have inlet ports. During the membrane removal process, the membrane removal tanks will experience standby periods, i.e., shutdowns due to material number switching or periodic maintenance. If the equipment has been continuously producing for more than 4 hours, the membrane removal solution in the entire tank will be at full level. During standby periods, approximately 100-150L of membrane removal solution containing adhesive residue will be discharged to the wastewater treatment center through the discharge port within 2 minutes. This embodiment utilizes a descaling solution recovery device installed between the discharge port and the inlet port. Based on commands issued by the controller to the descaling solution recovery device, it achieves the recovery and reuse of approximately 100-150L of descaling solution containing adhesive residue. This compensates for the liquid level of descaling solution in tanks #2 and #4, effectively saving the input cost of descaling solution. This reduces the instantaneous loss of descaling solution caused by equipment standby, reduces the amount of fresh descaling solution added to the descaling tanks during production, and avoids other risks caused by the reduced replenishment of descaling solution to the tanks, including: incomplete descaling of batch products due to dry running of the descaling solution spray pump, damage to the spray pump due to dry running, and delivery delays caused by product abnormalities. It also effectively reduces the wastewater treatment volume of the wastewater treatment center.

[0079] Preferably, such as Figure 2 As shown, the membrane removal liquid recovery device includes a pneumatic diaphragm pump 2, a filter assembly 3, a glue residue storage tank 4, a liquid storage tank 5, and a magnetic pump 6;

[0080] The pneumatic diaphragm pump 2 is connected to the discharge port of the membrane removal tank and communicates with the controller. It is used to recover the membrane removal liquid containing adhesive residue discharged from the membrane removal tank according to the start command, and to draw the membrane removal liquid containing adhesive residue into the filter assembly 3.

[0081] The filter assembly 3 is connected to the pneumatic diaphragm pump 2 and is used to filter the membrane removal liquid containing adhesive residue pumped by the pneumatic diaphragm pump 2 to obtain the filtered adhesive residue and the recycled membrane removal liquid.

[0082] The glue residue storage tank 4 is connected to the filter assembly 3 and is used to store the glue residue;

[0083] The liquid storage tank 5 is connected to the filter assembly 3 and is used to store the recycled membrane removal liquid;

[0084] The magnetic pump 6 is connected to the liquid storage tank 5 and the liquid inlet of the defilm removal tank, and is communicatively connected to the controller. It is used to draw the recycled defilm removal liquid stored in the liquid storage tank 5 into the liquid inlet of the defilm removal tank according to the addition command.

[0085] The above-described membrane stripping solution recovery device enables the recovery, filtration, and reuse of membrane stripping solution containing adhesive residue using an independent membrane stripping solution recovery unit. This process does not affect the main equipment or the original process, reduces the cost of the entire production process, and ensures the stable operation of the entire production process.

[0086] Among them, the pneumatic diaphragm pump is a corrosion-resistant pump that uses compressed air as a power source. It can pump out all kinds of corrosive liquids, liquids containing particles, as well as high-viscosity, volatile, flammable and highly toxic liquids. The magnetic pump is a magnetically driven pump that uses a permanent magnet coupling in a centrifugal pump. It consists of three parts: pump, magnetic drive and motor. The key components include an outer magnetic rotor, an inner magnetic rotor and a non-magnetic isolation sleeve. When the motor drives the outer magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic materials, driving the inner magnetic rotor connected to the impeller to rotate synchronously, realizing contactless power transmission. It can be used for the transmission of corrosive, flammable, explosive, toxic and harmful media.

[0087] Specifically, in this embodiment, the entire membrane removal liquid recovery device also includes a device body 1. The aforementioned pneumatic diaphragm pump 2, filter assembly 3, glue residue storage tank 4, liquid storage tank 5, and magnetic pump 6 are all mounted on the device body 1. The pneumatic diaphragm pump 2 is located at the bottom of the device body 1. The pneumatic diaphragm pump 2 is connected to the discharge port of the membrane removal tank through a first pipe 8, and then connected to the filter assembly 3 through a third pipe 10. The filter assembly 3 is located at the top of the device body 1. The pneumatic diaphragm pump 2 uses its own suction to send the glue residue-containing membrane removal liquid transmitted from the first pipe 8 into the filter assembly 3 through the third pipe 10. The glue residue storage tank 4 and the liquid storage tank... All 5 are located in the middle of the device body 1 and below the filter assembly 3, respectively connected to the filter assembly 3, so that the glue residue filtered by the filter assembly 3 and the recycled membrane removal liquid are stored in the glue residue storage tank 4 and the recycled membrane removal liquid is stored in the liquid storage tank 5 by gravity. The magnetic pump 6 is also located at the bottom of the device body 1 and below the liquid storage tank 5, connected to the liquid storage tank 5. It can use the gravity of the recycled membrane removal liquid stored in the liquid storage tank to transfer the recycled membrane removal liquid to the magnetic pump 6, and then through the suction action of the magnetic pump 6, the recycled membrane removal liquid is sucked into the liquid inlet of the membrane removal tank through the second pipe 9.

[0088] Specifically, in this embodiment, the controller can be an MCU installed inside the device body 1, electrically connected to both the pneumatic diaphragm pump and the magnetic pump. Communication between the MCU and the pneumatic diaphragm pump and the magnetic pump is achieved by transmitting electrical signals, and communication with the main device is achieved through the communication module built into the MCU. Alternatively, it can be an MCU installed outside the device body, communicating with the pneumatic diaphragm pump, the magnetic pump and the main device through the communication module built into the MCU. These are all understandable to those skilled in the art.

[0089] Preferably, such as Figure 2 As shown, the membrane removal liquid recovery device also includes a stirrer 51 disposed in the liquid storage tank 5;

[0090] The stirrer 51 is used to stir the recycled defilming liquid stored in the liquid storage tank 5.

[0091] The agitator prevents residual glue residue and other impurities in the recycled defilm removal solution stored in the liquid storage tank from settling, thereby improving the purity of the recycled defilm removal solution pumped into the defilm removal tank by the magnetic pump and enhancing the reuse effect of the defilm removal solution.

[0092] like Figure 2 As shown, the membrane removal liquid recovery device also includes a level gauge 52 disposed in the liquid storage tank 5;

[0093] The level gauge 52 is communicatively connected to the controller and is used to detect the level of the recycled defilm removal liquid stored in the liquid storage tank 5, obtain level data, and send the level data to the controller.

[0094] The controller is also used to determine whether the liquid level of the recycled membrane removal liquid stored in the liquid storage tank 5 has reached the preset maximum liquid level based on the liquid level data; when the liquid level of the recycled membrane removal liquid stored in the liquid storage tank 5 reaches the preset maximum liquid level, a stop command is sent to the pneumatic diaphragm pump 2.

[0095] The pneumatic diaphragm pump 2 is also used to stop pumping the descaling liquid containing adhesive residue into the filter assembly 3 when the stop command is received.

[0096] The liquid level of the recovered defilm removal solution in the liquid storage tank is detected by a level gauge, and the controller stops the pneumatic diaphragm pump from pumping the defilm removal solution containing adhesive residue when the liquid level in the liquid storage tank reaches the preset maximum level, thus preventing the recovered defilm removal solution from overflowing the liquid storage tank. The preset maximum level can be set and adjusted according to the actual conditions of the liquid storage tank.

[0097] like Figure 2 As shown, the filter assembly 3 includes a glue residue filter roller 31 and a glue residue filter tank 32;

[0098] One end of the glue residue filter roller 31 is connected to the pneumatic diaphragm pump 2, and the other end is connected to the glue residue filter tank 32. The glue residue filter tank 32 is also connected to the glue residue storage tank 4 and the liquid storage tank 5 respectively. The glue residue storage tank 4 is located below the glue residue filter roller 31, and the liquid storage tank 5 is located below the glue residue filter tank 32.

[0099] The filter components described above constitute a roller-type track filter device, which can effectively allow the glue residue to automatically fall into the glue residue storage tank for storage based on the action of the glue residue itself, and can also automatically fall into the liquid storage tank for storage based on the gravity of the recycled membrane removal liquid itself.

[0100] like Figure 3 As shown, the membrane removal solution recovery device further includes:

[0101] A first switching valve 11, located between the discharge outlet and the wastewater treatment center, is used to control the flow of the descaling liquid containing adhesive residue discharged from the discharge outlet into the wastewater treatment center when the pneumatic diaphragm pump 2 receives the start command; and

[0102] A second switching valve 12 is provided between the discharge port and the pneumatic diaphragm pump 2, which is used to control the flow of the descaling liquid containing adhesive residue discharged from the discharge port into the pneumatic diaphragm pump 2 when the pneumatic diaphragm pump 2 receives the start command.

[0103] The first and second switching valves ensure that when the membrane stripping solution recovery and reuse process is initiated, the membrane stripping solution containing adhesive residue discharged from the outlet is prevented from entering the wastewater treatment center and being treated as waste liquid. Instead, it is directed to enter the membrane stripping solution recovery device, thus enabling the smooth initiation of the membrane stripping solution recovery and reuse process. Specifically, the first switching valve controls the membrane stripping solution containing adhesive residue to prevent it from flowing into the wastewater treatment center, meaning it is closed; while the second switching valve controls the membrane stripping solution containing adhesive residue to flow into the pneumatic diaphragm pump, meaning it is opened.

[0104] Specifically, the first switching valve 11 is also used to control the flow of the descaling liquid containing glue residue discharged from the discharge port into the wastewater treatment center when the pneumatic diaphragm pump 2 receives the stop command;

[0105] The second switching valve 12 is used to control the descaling liquid containing adhesive residue discharged from the discharge port from the pneumatic diaphragm pump 2 so that it does not flow into the pneumatic diaphragm pump 2 when the pneumatic diaphragm pump 2 receives the stop command.

[0106] The first and second switching valves described above also ensure that when the pneumatic diaphragm pump in the membrane removal liquid recovery device receives a stop command, the membrane removal liquid containing adhesive residue discharged from the outlet is controlled to enter the wastewater treatment center for disposal as waste liquid, preventing it from entering the membrane removal liquid recovery device for recycling and reuse. This achieves a smooth stop to the membrane removal liquid recycling and reuse process. Specifically, the first switching valve controls the flow of the membrane removal liquid containing adhesive residue into the wastewater treatment center by opening the first switching valve; while the second switching valve controls the flow of the membrane removal liquid containing adhesive residue into the pneumatic diaphragm pump by closing the second switching valve.

[0107] Specifically, the first and second switching valves mentioned above can be either conventional manual valves that can be manually controlled to switch on or pneumatic valves that can be switched on and off according to the control instructions of the controller, and can be freely selected according to the actual situation.

[0108] like Figure 3 As shown, the membrane removal solution recovery device further includes:

[0109] A third switching valve 13 and a flow valve 14 are provided between the magnetic pump 6 and the liquid inlet;

[0110] The third switching valve 13 is used to control the flow of the recycled defilm removal liquid drawn by the magnetic pump 6 into the inlet; the flow valve 14 is used to control the flow rate of the recycled defilm removal liquid flowing into the inlet.

[0111] The aforementioned third switching valve allows the recycled defilm removal solution pumped by the magnetic pump to be added to the inlet, and the flow rate of the added recycled defilm removal solution is controlled by the aforementioned flow valve. This ensures that the defilm removal solution is added as needed and evenly in the defilm removal process, guaranteeing the stable operation of the entire process. Specifically, the third switching valve controls the flow of the recycled defilm removal solution pumped by the third magnetic pump into the inlet; the flow rate valve controls the flow rate of the recycled defilm removal solution, which is achieved by adjusting the opening degree of the flow rate valve.

[0112] Similarly, the third switching valve 13 is also used to control the recycled membrane removal liquid drawn by the magnetic pump 6 to not flow into the liquid inlet when the pneumatic diaphragm pump 2 receives the stop command.

[0113] Specifically, the third switch valve controls the magnetic pump 6 to prevent the recovered defilming liquid from flowing into the inlet, which means closing the third switch valve.

[0114] Similarly, the third switching valve mentioned above can be either a conventional manual valve that can be manually controlled to open or a pneumatic valve that can be opened and closed according to the control instructions of the controller; the flow valve mentioned above can be either a flow valve whose opening can be manually adjusted or a flow valve whose opening can be freely adjusted according to the control instructions of the controller, and can be freely selected according to the actual situation.

[0115] Specifically, in this embodiment, tanks #2 and #4 in the membrane removal tank are the tanks where the final membrane removal solution needs to be added, and both are equipped with inlet ports. Therefore, in this embodiment, there are two third switching valves and two flow valves. Figure 3 As shown, tanks #2 and #4 are each equipped with a third switching valve and a flow valve, allowing for independent control of the addition of recycled defilm removal solution to each tank. Both flow valves control a flow rate of 2–5 L / H. In actual processes, the number of third switching valves and flow valves can be adjusted according to the number of tanks requiring recycled defilm removal solution, and the opening degree of the corresponding flow valve can be controlled based on the actual flow rate required for each tank. This is understandable to those skilled in the art.

[0116] Preferably, such as Figure 2 As shown, the membrane removal solution recovery device further includes:

[0117] The flow meter 7 is used to detect the flow rate of the recovered membrane removal liquid flowing into the liquid inlet, obtain the flow data, and display it.

[0118] The flow meter allows relevant process personnel to visually observe the flow rate of the added recycled membrane removal solution.

[0119] Specifically, in this embodiment, the flow meter 7 can be disposed on the surface of the device body.

[0120] Preferably, the system further includes:

[0121] The waste liquid recovery device is connected to both the membrane removal tank and the membrane removal liquid recovery device, and is used to collect the waste liquid in the membrane removal tank and the membrane removal liquid recovery device.

[0122] The waste liquid recovery device, which is connected to both the defilming tank and the defilming liquid recovery device, can collect the waste liquid generated in the defilming tank, including wastewater after the defilming tank is maintained and defilming liquid containing glue residue that does not need to be recycled; it can also collect the waste liquid in the defilming liquid recovery device, including waste liquid after the defilming liquid recovery device is maintained, recycled defilming liquid that does not need to be added to the defilming tank, and filtered glue residue, etc.

[0123] In one specific embodiment, a pipe can be installed at a suitable location (e.g., the discharge port) in the membrane removal tank and connected to the waste liquid recovery device, and a pipe (which is connected to both the glue residue storage tank and the liquid storage tank) can be installed at a suitable location (e.g., the bottom of the device body) in the membrane removal liquid recovery device and connected to the waste liquid recovery device; at the same time, a corresponding valve is installed on each pipe to control the start and stop of waste liquid collection.

[0124] In one specific embodiment, the above-mentioned flexible circuit board circuit forming after film removal liquid recycling system is installed on the flexible circuit board production line, which can save about 18,948 yuan / month and reduce wastewater discharge by 3 tons / month, and has good application prospects.

[0125] Example 2

[0126] like Figure 4 As shown, a method for recovering stripping solution after flexible circuit board molding is described, using the stripping solution recovery system described in Example 1, comprising:

[0127] S1: Using the controller, send start and add commands to the membrane stripping solution recovery device;

[0128] S2: Using the defilm removal liquid recovery device, the device receives the start command issued by the controller, recovers the defilm removal liquid containing glue residue discharged from the discharge port of the defilm removal tank according to the start command, and filters the defilm removal liquid containing glue residue to obtain the recovered defilm removal liquid.

[0129] S3: Using the membrane removal liquid recovery device, receive the addition command issued by the controller, and add the recovered membrane removal liquid to the inlet of the membrane removal tank according to the addition command.

[0130] The method for recovering the stripping solution after flexible circuit board molding in this embodiment can collect the "waste" stripping solution generated in the stripping process without changing the main equipment and the original process. By filtering and reusing the "waste" stripping solution, the input cost of the stripping solution can be effectively saved, the cost of the stripping solution can be effectively controlled, and the potential risks caused by the difficulty in controlling the cost of the stripping solution can be reduced, ensuring the stable operation of the production process, and reducing the amount of wastewater to be treated.

[0131] Preferably, such as Figure 2 As shown, the membrane removal liquid recovery device includes a pneumatic diaphragm pump 2, a filter assembly 3, a glue residue storage tank 4, a liquid storage tank 5, and a magnetic pump 6;

[0132] S2 includes:

[0133] S21: Using the pneumatic diaphragm pump 2, receive the start command, recover the demembranous demembranous liquid containing adhesive residue discharged from the demembranous demembranous tank according to the start command, and draw the demembranous demembranous liquid containing adhesive residue into the filter assembly 3;

[0134] S22: Using the filter assembly 3, the membrane removal liquid containing adhesive residue pumped by the pneumatic diaphragm pump 2 is filtered to obtain the filtered adhesive residue and the recycled membrane removal liquid.

[0135] S23: The adhesive residue is stored in the adhesive residue storage tank 4; and the recycled film removal liquid is stored in the liquid storage tank 5.

[0136] S3 includes:

[0137] S31: Using the magnetic pump 6, the addition command is received, and the recycled defilming liquid stored in the liquid storage tank 5 is drawn into the liquid inlet of the defilming tank according to the addition command.

[0138] Preferably, such as Figure 2 As shown, the membrane removal liquid recovery device also includes a stirrer 51 disposed in the liquid storage tank 5;

[0139] In S23, after storing the recycled membrane removal solution in the liquid storage tank 5, the process further includes:

[0140] The stirrer 51 is used to stir the recycled defilming liquid stored in the liquid storage tank 5.

[0141] Preferably, such as Figure 2As shown, the membrane removal liquid recovery device also includes a level gauge 52 disposed in the liquid storage tank 5;

[0142] In S23, after storing the recycled membrane removal solution in the liquid storage tank 5, the process further includes:

[0143] The liquid level gauge 52 is used to detect the liquid level of the recycled defilm removal liquid stored in the liquid storage tank 5 to obtain liquid level data; and the liquid level data is sent to the controller.

[0144] Using the controller, it is determined whether the liquid level of the recycled membrane removal liquid stored in the liquid storage tank 5 has reached the preset maximum liquid level based on the liquid level data; when the liquid level of the recycled membrane removal liquid stored in the liquid storage tank 5 reaches the preset maximum liquid level, a stop command is sent to the pneumatic diaphragm pump 2.

[0145] When the pneumatic diaphragm pump 2 receives the stop command, it controls the pumping of the descaling liquid containing adhesive residue into the filter assembly 3 to stop.

[0146] Preferably, such as Figure 3 As shown, the membrane removal liquid recovery device also includes a first switching valve 11 located between the discharge port and the wastewater treatment center, and a second switching valve 12 located between the discharge port and the pneumatic diaphragm pump 2.

[0147] In S2, before recovering the adhesive residue-containing demembranes from the demembranes tank according to the start command, and before drawing the adhesive residue-containing demembranes into the filter assembly, the process further includes:

[0148] When the pneumatic diaphragm pump 2 receives the start command, the first switching valve 11 is used to control the descaling liquid containing glue residue discharged from the discharge port to prevent it from flowing into the wastewater treatment center.

[0149] The second switching valve 12 is used to control the flow of the adhesive residue descaling liquid discharged from the discharge port into the pneumatic diaphragm pump 2.

[0150] Preferably, such as Figure 3 As shown, the membrane removal liquid recovery device also includes a third switching valve 13 and a flow valve 14 disposed between the magnetic pump 6 and the liquid inlet;

[0151] In S3, before drawing the recovered defilm removal solution stored in the liquid storage tank into the inlet of the defilm removal tank according to the addition instruction, the method further includes:

[0152] The third switching valve 13 is used to control the flow of the recycled defilm removal liquid drawn by the magnetic pump 6 into the inlet; and the flow valve 14 is used to control the flow rate of the recycled defilm removal liquid flowing into the inlet.

[0153] The system for recovering the film removal solution after flexible circuit board molding used in this embodiment is the same as the system in Embodiment 1. Therefore, for details not covered in this embodiment, please refer to Embodiment 1 and... Figures 1 to 3 The specific details will not be elaborated here.

[0154] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A system for recovering film removal solution after flexible circuit board molding, characterized in that, The system comprises a controller and a stripping solution recovery device connected in communication; The controller is configured to issue a start instruction and an addition instruction to the stripping solution recovery device; The stripping solution recovery device is connected in communication with a discharge port of the stripping tank and configured to receive the start instruction issued by the controller, recover the stripping solution containing sludge discharged from the stripping tank according to the start instruction, and filter the stripping solution containing sludge to obtain recovered stripping solution; The stripping solution recovery device is also connected in communication with a liquid injection port of the stripping tank and configured to receive the addition instruction issued by the controller and add the recovered stripping solution into the liquid injection port of the stripping tank according to the addition instruction; The stripping solution recovery device comprises a pneumatic diaphragm pump, a filter assembly, a sludge storage tank, a liquid storage tank, and a magnetic pump; The pneumatic diaphragm pump is connected in communication with the discharge port of the stripping tank and the controller and configured to recover the stripping solution containing sludge discharged from the stripping tank according to the start instruction and suck the stripping solution containing sludge into the filter assembly; The filter assembly is connected in communication with the pneumatic diaphragm pump and configured to filter the stripping solution containing sludge sucked by the pneumatic diaphragm pump to obtain filtered sludge and recovered stripping solution; The sludge storage tank is connected in communication with the filter assembly and configured to store the sludge; The liquid storage tank is connected in communication with the filter assembly and configured to store the recovered stripping solution; The magnetic pump is connected in communication with the liquid storage tank and the liquid injection port of the stripping tank and the controller and configured to suck the recovered stripping solution stored in the liquid storage tank into the liquid injection port of the stripping tank according to the addition instruction.

2. The system according to claim 1, wherein the stripping solution recovery device further comprises a stirrer arranged in the liquid storage tank; The stirrer is configured to stir the recovered stripping solution stored in the liquid storage tank.

3. The system according to claim 1, wherein the stripping solution recovery device further comprises a liquid level meter arranged in the liquid storage tank; The liquid level meter is connected in communication with the controller and configured to detect a liquid level of the recovered stripping solution stored in the liquid storage tank to obtain liquid level data and send the liquid level data to the controller; The controller is further configured to determine whether the liquid level of the recovered stripping solution stored in the liquid storage tank reaches a preset maximum liquid level according to the liquid level data, and issue a stop instruction to the pneumatic diaphragm pump when the liquid level of the recovered stripping solution stored in the liquid storage tank reaches the preset maximum liquid level; The pneumatic diaphragm pump is further configured to stop sucking the stripping solution containing sludge into the filter assembly when the stop instruction is received.

4. The system for reclaiming post-mold defluxing solution of flexible board lines according to claim 1, wherein The filter assembly comprises a sludge filter drum and a sludge filter tank; One end of the glue residue filtering roller is communicated with the pneumatic diaphragm pump, and the other end is communicated with the glue residue filtering tank, the glue residue filtering tank is further communicated with the glue residue storage tank and the liquid storage tank respectively, the glue residue storage tank is located below the glue residue filtering roller, and the liquid storage tank is located below the glue residue filtering tank.

5. The system for reclaiming post-mold defluxing solution of flexible board lines according to claim 1, wherein The film removing liquid recovery device further comprises: a first switch valve arranged between the discharge port and the wastewater treatment center, used for controlling the glue residue-containing film removing liquid discharged from the discharge port not to flow into the wastewater treatment center when the pneumatic diaphragm pump receives the start instruction; and a second switch valve arranged between the discharge port and the pneumatic diaphragm pump, used for controlling the glue residue-containing film removing liquid discharged from the discharge port to flow into the pneumatic diaphragm pump when the pneumatic diaphragm pump receives the start instruction.

6. The reclaiming system of post-mold defluxing solution for flexible board lines according to claim 1, characterized in that, The film removing liquid recovery device further comprises: a third switch valve and a flow valve arranged between the magnetic pump and the liquid injection port; the third switch valve is used for controlling the recovered film removing liquid pumped by the magnetic pump to flow into the liquid injection port; and the flow valve is used for controlling the flow of the recovered film removing liquid flowing into the liquid injection port.

7. The reclaiming system of post-molding defluxing solution for flexible board lines according to claim 6, characterized in that, The film removing liquid recovery device further comprises: a flow meter used for detecting the flow of the recovered film removing liquid flowing into the liquid injection port, obtaining flow data and displaying.

8. The recovery system of post-molding film stripping solution for flexible board lines according to any one of claims 1 to 7, characterized in that, The system further comprises: a waste liquid recovery device communicated with the film removing tank and the film removing liquid recovery device, used for collecting waste liquid in the film removing tank and the film removing liquid recovery device.

9. A method for recovering a post-molding defluxing solution for flexible board wiring, characterized by, The film removing liquid recovery system is used for recovering film removing liquid after flexible board circuit forming, comprising: a controller is used for issuing a start instruction and an adding instruction to the film removing liquid recovery device; the film removing liquid recovery device is used for receiving the start instruction issued by the controller, recovering the glue residue-containing film removing liquid discharged from the discharge port of the film removing tank according to the start instruction, and filtering the glue residue-containing film removing liquid to obtain recovered film removing liquid; the film removing liquid recovery device is used for receiving the adding instruction issued by the controller, and adding the recovered film removing liquid to the liquid injection port of the film removing tank according to the adding instruction; the film removing liquid recovery device comprises a pneumatic diaphragm pump, a filtering assembly, a glue residue storage tank, a liquid storage tank and a magnetic pump; the film removing liquid recovery device is used for receiving the start instruction issued by the controller, recovering the glue residue-containing film removing liquid discharged from the discharge port of the film removing tank according to the start instruction, and filtering the glue residue-containing film removing liquid to obtain recovered film removing liquid, comprising: the pneumatic diaphragm pump is used for receiving the start instruction, recovering the glue residue-containing film removing liquid discharged from the film removing tank according to the start instruction, and pumping the glue residue-containing film removing liquid into the filtering assembly; the filtering assembly is used for filtering the glue residue-containing film removing liquid pumped by the pneumatic diaphragm pump to obtain filtered glue residue and the recovered film removing liquid; the glue residue storage tank is used for storing the glue residue, and the liquid storage tank is used for storing the recovered film removing liquid; The use of the membrane stripping liquid recovery device receives the adding instruction issued by the controller, and adds the recovered membrane stripping liquid into the liquid injection port of the membrane stripping tank according to the adding instruction, which comprises: The use of the magnetic pump receives the adding instruction, and sucks the recovered membrane stripping liquid stored in the liquid storage tank into the liquid injection port of the membrane stripping tank according to the adding instruction.

10. The method for recovering the film-removing solution after flexible circuit board forming according to claim 9, characterized in that, The membrane stripping liquid recovery device further comprises a stirrer arranged in the liquid storage tank; After the use of the liquid storage tank to store the recovered membrane stripping liquid, it further comprises: The use of the stirrer stirs the recovered membrane stripping liquid stored in the liquid storage tank.

11. The method for recovering the film-removing solution after flexible circuit board forming according to claim 9, characterized in that, The membrane stripping liquid recovery device further comprises a liquid level meter arranged in the liquid storage tank; After the use of the liquid storage tank to store the recovered membrane stripping liquid, it further comprises: The use of the liquid level meter detects the liquid level of the recovered membrane stripping liquid stored in the liquid storage tank to obtain liquid level data, and sends the liquid level data to the controller; The use of the controller determines whether the liquid level of the recovered membrane stripping liquid stored in the liquid storage tank reaches a preset maximum liquid level according to the liquid level data; when the liquid level of the recovered membrane stripping liquid stored in the liquid storage tank reaches the preset maximum liquid level, a stop instruction is issued to the pneumatic diaphragm pump; The use of the pneumatic diaphragm pump controls to stop sucking the membrane stripping liquid containing rubber residues into the filter assembly when the stop instruction is received.

12. The method for recovering the film-removing solution after flexible circuit board forming according to claim 9, characterized in that, The membrane stripping liquid recovery device further comprises a first on-off valve arranged between the discharge port and the wastewater treatment center, and a second on-off valve arranged between the discharge port and the pneumatic diaphragm pump; Before the use of the membrane stripping tank to recover the membrane stripping liquid containing rubber residues discharged from the membrane stripping tank and suck the membrane stripping liquid containing rubber residues into the filter assembly according to the starting instruction, it further comprises: When the pneumatic diaphragm pump receives the starting instruction, the use of the first on-off valve controls the membrane stripping liquid containing rubber residues discharged from the discharge port not to flow into the wastewater treatment center; The use of the second on-off valve controls the membrane stripping liquid containing rubber residues discharged from the discharge port to flow into the pneumatic diaphragm pump.

13. The method for recovering the film-removing solution after flexible circuit board forming according to claim 9, characterized in that, The membrane stripping liquid recovery device further comprises a third on-off valve and a flow valve arranged between the magnetic pump and the liquid injection port; Before the use of the liquid storage tank to recover the membrane stripping liquid containing rubber residues discharged from the membrane stripping tank and suck the membrane stripping liquid containing rubber residues into the filter assembly according to the starting instruction, it further comprises: The use of the third on-off valve controls the recovered membrane stripping liquid sucked by the magnetic pump to flow into the liquid injection port; and the use of the flow valve controls the flow of the recovered membrane stripping liquid flowing into the liquid injection port.

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