Horizontal line water-saving control system

Abstract

The utility model relates to the technical field of circuit board production, and discloses a water-saving control system for a horizontal line. Comprising a conveying assembly used for conveying a circuit board, a laser sensor used for detecting whether the circuit board exists or not, an overflow washing assembly used for cleaning the circuit board and a water supply device used for supplying pure water, a cleaning station is arranged on the conveying assembly, and the laser irradiation range of the laser sensor covers the area of the cleaning station. The overflow washing assembly comprises an electromagnetic valve and a spray head, the spray head is arranged above the cleaning station, the working range of the spray head covers the cleaning station, the water supply device is communicated with the electromagnetic valve, the electromagnetic valve is in signal connection with the laser sensor, and the electromagnetic valve is communicated with the spray head. According to the system, the sensor is additionally arranged, the whole set of device is intelligently modified, the use amount of pure water is reduced due to the detection and washing working mode, and the FPC manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of FPC manufacturing, in particular to a horizontal line water-saving control system. Background Art

[0002] After processing and forming, the FPC (flexible circuit board) still needs to go through processes such as degreasing, overflow water washing, pickling, and overflow water washing to clean the impurities on the flexible circuit board. Among them, the horizontal line cleaning in the overflow water washing process is an important process link of FPC. The water source used is mainly pure water with a conductivity of less than 10uS / cm. The price of pure water is eight times that of tap water, and it is also consumed in large quantities during the use process. In the existing cleaning equipment, most of the processes are that the overall automatic pump door opens after the circuit board passes through the feed port sensing, and then cleaning is carried out after opening. In this process, it is often the case that the cleaning equipment is still working when the circuit board is not near the nozzle, which greatly wastes pure water resources and increases the cost of the entire flexible circuit board production process. Utility Model Content

[0003] The main purpose of the utility model is to provide a horizontal line water-saving control system, aiming to solve the technical problem of large pure water consumption in the process of horizontal line cleaning PFC.

[0004] To achieve the above-mentioned purpose, the utility model provides a horizontal line water-saving control system, comprising a transport component for conveying circuit boards, a laser sensor for detecting whether there is a circuit board, an overflow water washing component for cleaning the circuit board and a water supply device for supplying pure water, wherein a cleaning station is provided on the transport component, the laser irradiation range of the laser sensor covers the cleaning station area, the overflow water washing component comprises a solenoid valve and a nozzle, the nozzle is arranged above the cleaning station, and its working range covers the cleaning station, the water supply device is connected to the solenoid valve, the solenoid valve is connected to the laser sensor signal, the solenoid valve is connected to the nozzle, and when the circuit board to be detected is transported to the cleaning station area, the laser sensor outputs a circuit board in place signal, controls the solenoid valve to connect to the nozzle, and sprays pure water to clean the circuit board in the cleaning station.

[0005] The horizontal line water-saving control system also includes a base, which is arranged above the transport component. A mounting bracket is provided on the base, and the nozzle is arranged on the mounting bracket.

[0006] The horizontal line water-saving control system also includes a water pressure sensor and an alarm. The alarm is arranged on the base. The water pressure sensor is connected to the water outlet of the nozzle. The water pressure sensor is connected to the alarm signal.

[0007] The overflow water washing component also includes a flow meter for detecting the pure water flow rate, one end of the flow meter is connected to the solenoid valve, and the other end is connected to the nozzle.

[0008] The transport assembly includes a power mechanism and transport rollers driven by the power mechanism. Several of the transport rollers are laid flat on the same horizontal plane and rotate in the same direction under the drive of the power mechanism. Several protrusions are arranged at intervals on the transport rollers, and two adjacent transport rollers are staggered.

[0009] At least four of the nozzles are evenly spaced apart on the base, and four cleaning stations are correspondingly arranged on the transport component. The four nozzles are all located on the same horizontal plane and are equidistant from the corresponding cleaning stations.

[0010] One of the laser sensors is arranged at one side of the nozzle, and the light emitting direction of the laser sensor is toward the cleaning station area.

[0011] The laser sensor is arranged at one side of the transport component, and the light emitting direction of the laser sensor passes through the cleaning station area.

[0012] A pipeline groove is provided on the base, and a pure water pipeline connecting the nozzle and the electromagnetic valve is buried in the pipeline groove.

[0013] The pressure of the overflow water washing of the nozzle is 1.5kg / cm and the flow rate is 6L / min.

[0014] In the technical solution provided by the utility model, the FPC that has passed the previous process comes out of the discharge port and is placed in the transport component. When it moves to the cleaning station on the transport component, the laser sensor arranged above the cleaning station is blocked from emitting light, which means that the FPC has arrived at the cleaning station area. The laser sensor is connected to the solenoid valve through a computer system or a programmable controller plc signal with a control system. When the FPC arrives at the station, the laser sensor outputs an in-place signal to the control system, and the control system outputs an opening signal to control the solenoid valve to connect to the water path of the nozzle, and the nozzle will spray pure water to clean the FPC below. After a certain period of time after the FPC leaves the cleaning station with the transport component, the laser sensor does not provide an in-place signal for a certain period of time, and the control system sends a signal to disconnect the water path between the solenoid valve and the nozzle. Generally, in the process of cleaning the FPC, even after the cleaning process starts and even if there is no FPC on the transport component, a large amount of pure water is still wasted for cleaning, which increases the water consumption in the entire process. The system adds sensors to the entire device for intelligent transformation. The working mode of inspection and washing reduces the amount of pure water used and reduces the manufacturing cost of FPC. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0016] Figure 1 This is a schematic diagram of the system structure of an embodiment of the horizontal line water-saving control system of the utility model;

[0017] Figure 2 It is a structural schematic diagram of an embodiment of the horizontal line water-saving control system of the utility model;

[0018] Figure 3 It is a top view structural schematic diagram of an embodiment of the horizontal line water-saving control system of the utility model;

[0019] Figure 4 It is a structural schematic diagram of an embodiment of the horizontal line water-saving control system of the utility model.

[0020] In the figure: 1. horizontal line water-saving control system; 2. transportation component; 21. transportation roller; 211. protrusion; 3. base; 31. mounting bracket; 32. pipe groove; 4. flow meter; 5. solenoid valve; 6. laser sensor; 7. control system; 8. water pressure sensor; 9. alarm; 10. pump; 11. nozzle; 12. control system; 13. FPC. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are only for illustrative purposes. In the description of the utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "include" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may be present or added.

[0022] In addition, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. All technical and scientific terms used in this specification have the same meaning as those generally understood by technicians in the technical field of the present utility model. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0023] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Please refer to Figures 1 to 3 The horizontal line water-saving control system 1 includes a transport component 2 for conveying circuit boards, a laser sensor 6 for detecting whether there are circuit boards, an overflow water washing component for cleaning circuit boards and a water supply device for supplying pure water. A cleaning station is provided on the transport component 2. The laser irradiation range of the laser sensor 6 covers the cleaning station area. The overflow water washing component includes an electromagnetic valve 5 and a nozzle 11. The nozzle 11 is arranged above the cleaning station, and its working range covers the cleaning station. The water supply device is connected to the electromagnetic valve 5, and the electromagnetic valve 5 is connected to the laser sensor 6 signal. The electromagnetic valve 5 is connected to the nozzle 11. When the circuit board to be detected is transported to the cleaning station area, the laser sensor 6 outputs a circuit board in place signal, controls the electromagnetic valve 5 to connect to the nozzle 11, and sprays pure water to clean the circuit board in the cleaning station.

[0025] In the entire FPC manufacturing process, the initially prepared FPC also needs to be horizontally cleaned (using chemical agents to react and clean the circuit board), and the main process is: feeding-degreasing-overflow water washing-acid washing-overflow water washing-discharging. This system is mainly used in the overflow water washing link. The FPC that has passed the previous process comes out of the discharge port and is placed in the transport component 2. When it moves to the cleaning station on the transport component 2, the laser sensor 6 set above the cleaning station is blocked from emitting light, that is, it is detected that the FPC has reached the cleaning station area. The water supply device is mainly a pump 10 installed in the water tank, which is connected to the solenoid valve 5 through a water channel. The laser sensor 6 and the solenoid valve 5 are connected by a computer system or a programmable controller plc signal with a control system 7. When the FPC arrives at the station, the laser sensor 6 outputs an arrival signal to the control system 7, and the control system 7 outputs an opening signal to control the solenoid valve 5 to connect to the water channel with the nozzle 11, and the nozzle 11 will spray pure water to clean the FPC below. After a certain period of time after the FPC leaves the cleaning station with the transport component 2, the laser sensor 6 does not provide a signal of arrival for a certain period of time, and the control system 7 sends a signal to disconnect the water path between the solenoid valve 5 and the nozzle 11. Generally, in the process of cleaning FPC, even if there is no FPC on the transport component 2 after the cleaning process starts, a large amount of pure water is still wasted for cleaning, which increases the water consumption in the whole process. This system adds sensors to the whole set of equipment for intelligent transformation. The working mode of inspection and cleaning reduces the amount of pure water used and reduces the manufacturing cost of FPC.

[0026] Please refer to Figures 1 to 3 The horizontal water-saving control system 1 also includes a base 3, which is arranged above the transport component 2. A mounting bracket 31 is provided on the base 3, and the nozzle 11 is arranged on the mounting bracket 31. The base 3 provides an installation position for the nozzle 11. During the process of spraying pure water, the nozzle 11 is prone to tipping over due to the water flow pressure, so a special fixing bracket is required to be installed on the base 3. The mounting bracket 31 body is composed of a ring for fixing the nozzle 11 and a support rod connected to the base 3, which facilitates installation and disassembly while ensuring structural strength. In addition to being used to install various external components, the base 3 itself can also be used to install the solenoid valve 5 of the water system and various water components.

[0027] Please refer to Figures 1 to 3The horizontal line water-saving control system 1 also includes a water pressure sensor 8 and an alarm 9. The alarm 9 is arranged on the base 3. The water pressure sensor 8 is connected to the water outlet of the nozzle 11. The water pressure sensor 8 is connected to the alarm 9 by signal. The alarm 9 can be an indicator light or an alarm bell. The water pressure sensor 8 is connected to the alarm 9 by signal through a computer system or a programmable controller plc with a control system 7. When the water pressure sensor 8 detects that the pressure of the water outlet of the nozzle 11 is different from the set value, or the pressure changes too much, it outputs an alarm signal to the control system 7. After receiving the processed alarm signal, the alarm performs an alarm action, such as: the indicator light flashes or a prompt ring sounds.

[0028] Please refer to Figures 1 to 3 The overflow water washing assembly also includes a flow meter 4 for detecting the pure water flow rate, one end of the flow meter 4 is connected to the solenoid valve 5, and the other end is connected to the nozzle 11. The technician can observe the water flow rate of the entire water washing system by observing the flow meter 4.

[0029] Please refer to Figures 1 to 3 The transport assembly 2 includes a power mechanism and a transport roller 21 driven by the power mechanism. A plurality of transport rollers 21 are laid flat on the same horizontal plane and rotate in the same direction under the drive of the power mechanism. A plurality of protrusions 211 are arranged at intervals on the transport roller 21, and two adjacent transport rollers 21 are arranged in a staggered manner. Driven by the transport roller 21, the FPC moves toward the direction of the nozzle 11, and the sprayed pure water flows out from between the protrusions 211 between the two transport rollers 21 and flows into a water storage tank specially used for storing waste water under the transport roller 21. This structure solves the problem of waste water collection during the transportation and cleaning of flexible circuit boards.

[0030] Please refer to Figures 1 to 3 At least four nozzles 11 are evenly spaced on the base 3, and four cleaning stations are correspondingly arranged on the transport component 2. The four nozzles 11 are all on the same horizontal plane and are equidistant from the corresponding cleaning stations. The four nozzles 11 work simultaneously to speed up the working efficiency of the entire overflow water washing process.

[0031] Please refer to Figures 1 to 3 A laser sensor 6 is disposed on one side of the nozzle 11, and the light emitting direction of the laser sensor 6 faces the cleaning station area. When the FPCs are non-continuously and scattered on the transport roller 21, the time when the FPCs of the same batch arrive at each cleaning station is not uniform. At this time, installing a laser sensor 6 above each cleaning station can effectively detect whether the FPCs pass through the corresponding monitored cleaning station.

[0032] Please refer to Figures 1 to 4, the laser sensor 6 is arranged on one side of the transport component 2, and the light emitting direction of the laser sensor 6 passes through the cleaning station area. When the FPC passes through the parallel row of cleaning stations in a row, the laser sensor 6 is arranged on one side of the transport component 2 to emit laser to complete the detection of whether the FPC is in place. Compared with the previous laser sensor 6 installation scheme, this scheme is more economical and affordable.

[0033] Please refer to Figures 1 to 4 A pipeline groove 32 is buried on the base 3, and a pure water pipeline connecting the nozzle 11 and the electromagnetic valve 5 is buried in the pipeline groove 32. It can store part of the water pipeline and reduce the vibration of the nozzle 11 when spraying pure water, so as to avoid loosening of the water connection.

[0034] When the nozzle is performing overflow water washing, the pressure of the sprayed pure water is 1.5kg / cm and the flow rate is 6L / min, which can clean the chemicals on the flexible circuit board to the greatest extent without damaging the circuit board. The overflow water washing effect is the best.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A horizontal water-saving control system, characterized in that: The invention comprises a transport component (2) for transporting a circuit board, a laser sensor (6) for detecting whether a circuit board is present, an overflow water washing component for cleaning the circuit board, and a water supply device for supplying pure water. The transport component (2) is provided with a cleaning station. The laser irradiation range of the laser sensor (6) covers the cleaning station. The overflow water washing component comprises a solenoid valve (5) and a nozzle (11). The nozzle (11) is arranged above the cleaning station and its working range covers the cleaning station. The water supply device is connected to the solenoid valve (5). The solenoid valve (5) is connected to the laser sensor (6) by signal. The solenoid valve (5) is connected to the nozzle (11). When the circuit board to be detected is transported to the cleaning station area, the laser sensor (6) outputs a circuit board arrival signal, controls the solenoid valve (5) to connect to the nozzle (11), and sprays pure water to clean the circuit board in the cleaning station.

2. The horizontal line water-saving control system according to claim 1, characterized in that: The horizontal line water-saving control system further comprises a base (3), wherein the base (3) is arranged above the transport component (2), a mounting bracket (31) is provided on the base (3), and the nozzle (11) is arranged on the mounting bracket (31).

3. The horizontal line water-saving control system according to claim 2, characterized in that: The horizontal line water-saving control system also includes a water pressure sensor (8) and an alarm (9), wherein the alarm (9) is arranged on the base (3), the water pressure sensor (8) is connected to the water outlet of the nozzle (11), and the water pressure sensor (8) is signal-connected to the alarm (9).

4. The horizontal line water-saving control system according to claim 1, characterized in that: The overflow water washing component also includes a flow meter (4) for detecting the pure water flow rate, one end of the flow meter (4) is connected to the solenoid valve (5), and the other end is connected to the nozzle (11).

5. The horizontal line water-saving control system according to claim 1, characterized in that: The transport assembly (2) comprises a power mechanism and a transport roller (21) driven by the power mechanism. A plurality of the transport rollers (21) are arranged flat on the same horizontal plane and rotate in the same direction under the drive of the power mechanism. A plurality of protrusions (211) are arranged at intervals on the transport rollers (21), and two adjacent transport rollers (21) are arranged in a staggered manner.

6. The horizontal line water-saving control system according to any one of claims 2 to 3, characterized in that: At least four of the nozzles (11) are evenly spaced and arranged on the base (3); four cleaning stations are correspondingly arranged on the transport component (2); the four nozzles (11) are all located on the same horizontal plane and are equidistant from the corresponding cleaning stations.

7. The horizontal line water-saving control system according to claim 6, characterized in that: One of the laser sensors (6) is arranged on one side of the nozzle (11), and the light emitting direction of the laser sensor (6) is directed toward the cleaning station area.

8. The horizontal line water-saving control system according to claim 1, characterized in that: The laser sensor (6) is arranged on one side of the transport component (2), and the light emitting direction of the laser sensor (6) passes through the cleaning station area.

9. The horizontal line water-saving control system according to claim 3, characterized in that: The base (3) is provided with a pipeline groove (32), and a pure water pipeline connecting the nozzle (11) and the electromagnetic valve (5) is buried in the pipeline groove (32).

10. The horizontal line water-saving control system according to claim 1, characterized in that: The overflow water washing pressure of the nozzle (11) is 1.5 kg / cm and the flow rate is 6 L / min.

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