Automatic paint adding device controlled by capacitive sensor

Abstract

According to the automatic paint adding device controlled by the capacitive sensor, related data signals are detected through the capacitive sensor and transmitted to the relay, and the operation of the peristaltic pump is controlled by the relay, so that the automatic control of the paint adding process is realized, frequent manual operation is not needed, the efficiency of paint adding operation is improved, and the labor cost is reduced; the capacitive sensor can accurately sense changes of related parameters and accurately transmit data signals to the relay, and the relay accurately controls operation of the peristaltic pump according to the received signals, so that accurate control over the paint liquid conveying amount is achieved, product quality is improved, a transformer provides appropriate voltage for the whole device, and production efficiency is improved. Each electrical element is ensured to work in a safe and stable voltage environment, and the risk of equipment damage caused by unstable voltage is reduced. Meanwhile, the relay serves as a control core component, stably receives signals of the capacitive sensor and controls operation of the peristaltic pump, and safety and stability of the automatic paint adding device are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic wire production technology, specifically to an automatic paint-applying device controlled by a capacitive sensor. Background Technology

[0002] In the production of enameled wire, the management of the enamel in the enamel tank is a crucial step. Currently, enamel replenishment mainly relies on a enamel-filling pipe located outside the paint tank, with the amount of enamel added controlled by a valve. However, this traditional method has significant drawbacks: enamel level monitoring is manual; operators must continuously observe the enamel level in the tank to prevent overfilling. This not only increases the workload but also introduces the risk of error and negligence. Furthermore, the traditional painting process involves cyclical enamel filling from a enamel tank, which must be thoroughly cleaned before starting. This process carries the risk of impurities from the tank being introduced into the paint. In addition, cleaning the enamel tank is time-consuming during frequent sampling, and the tank needs to be cleaned again when changing paint during sampling, further wasting time. Sometimes, to avoid using the enamel tank, manual enamel filling is used. This not only requires personnel to constantly monitor the enamel level, increasing workload, but also increases the risk of spillage and environmental pollution when pouring enamel into the tank.

[0003] The current technology provides an automatic coating system for enameled wire (publication number: CN213727536U), which includes a mold frame, coating conductors, coating tanks, a piping system, and molds. The mold frame is located next to the coating tanks, and the molds are placed on the mold frame. The coating conductors pass through the coating tanks and molds in sequence. There are multiple coating tanks arranged side by side, and the multiple coating tanks are connected to a piping system. The piping system includes a main pipeline, tees, solenoid valves, branch pipelines, and float switches. The main pipeline is connected to a coating tank. Multiple tees on the main pipeline connect to multiple branch pipelines. Solenoid valves are installed on the branch pipelines. Each branch pipeline connects to a coating tank. A float switch is installed in the coating tank, and the float switch controls the solenoid valves connected to the branch pipelines of that coating tank.

[0004] However, the above technical solution still has the problem of instability. Since the opening and closing of the electromagnetic valve takes a certain amount of time, it may cause a delay in the addition of paint, affecting production efficiency. In addition, the floating switch works in the paint for a long time and may be affected by factors such as paint corrosion and deposit adhesion, which may lead to its unstable operation or failure. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an automatic paint-applying device controlled by a capacitive sensor.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic paint application device controlled by a capacitive sensor, comprising: a mounting frame, a mounting plate at the bottom of the mounting frame, peristaltic pumps arranged sequentially on the mounting plate, with the rotating end of each peristaltic pump extending beyond the mounting plate, an infusion tube for conveying paint being embedded in the rotating end of each peristaltic pump, an operation plate located inside the mounting frame and at the top of the mounting plate, a transformer on the operation plate, and at least one relay wired to the transformer on the operation plate, the signal input terminal of the relay being wired to the capacitive sensor and receiving data signals from the capacitive sensor, and the signal output terminal of the relay being connected to the peristaltic pump and controlling the operation of the peristaltic pump.

[0007] As a preferred embodiment of this application, the operation panel is further provided with a switch panel, which is connected to the relay; wherein each circuit group consists of a capacitive sensor, a relay, a switch panel and a pump.

[0008] As a preferred embodiment of this application, the switch panel includes: a two-way dual-control switch and a reverse switch, wherein the two-way dual-control switch controls the peristaltic pump to rotate in the forward direction, and the reverse switch controls the peristaltic pump to rotate in the reverse direction.

[0009] As a preferred embodiment of this application, the infusion tubing includes a silicone tubing embedded in the peristaltic pump. The silicone tubing is U-shaped and extends to both ends outside the peristaltic pump. L-shaped connecting tubes are respectively sleeved at both ends of the silicone tubing, and the connecting tubes are respectively connected to the delivery tubing.

[0010] As a preferred embodiment of this application, the dual-control switch can control the peristaltic pump to rotate 90° or rotate to 180° to reset.

[0011] As a preferred embodiment of this application, the flow rate of the peristaltic pump is 600ml / min-2000ml / min.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This application utilizes a capacitive sensor to detect relevant data signals and transmits them to a relay. The relay then controls the peristaltic pump, achieving automated control of the paint application process. This eliminates the need for frequent manual operation, significantly improving efficiency and reducing labor costs. The capacitive sensor accurately detects changes in relevant parameters and transmits the data signals precisely to the relay. The relay then precisely controls the peristaltic pump based on the received signals, thereby achieving precise control of the paint delivery volume. This ensures the accuracy and consistency of paint application each time, contributing to improved product quality. A transformer provides suitable voltage to the entire device, ensuring that all electrical components operate in a safe and stable voltage environment and reducing the risk of equipment damage due to voltage instability. Simultaneously, the relay, as the core control component, reliably receives signals from the capacitive sensor and controls the peristaltic pump, ensuring the safety and stability of the entire automated paint application device. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the peristaltic pump structure of this utility model;

[0018] Figure 4 This is a working diagram of the peristaltic pump in this utility model.

[0019] In the diagram: 1. Mounting bracket; 11. Mounting plate; 2. Peristaltic pump; 3. Infusion tubing; 31. Silicone tubing; 32. Connecting tubing; 33. Transfer tubing; 4. Control panel; 5. Transformer; 6. Relay; 7. Capacitive sensor; 8. Switch panel; 81. Two-way double-pole switch; 82. Reverse switch. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] To meet the demands of frequent prototyping in the automotive industry, an automatic paint-adding device controlled by a capacitive sensor was invented. This device employs a multi-pump head structure, with each pump controlling one paint tank. Each pump also has an independent capacitive sensor 7 that transmits signals to control the painting process. Compared to traditional paint-adding methods, this device, with its multi-pump head structure, can use multiple paint combinations. During frequent prototyping, the pump tubing is easy to replace and clean, saving significant time and preventing paint backflow that contaminates the paint cans, thus reducing costs. Furthermore, compared to handling paint boxes, this device is smaller, saving space and is easy to move, allowing it to be used on different machines as an intermediate paint transfer device. Therefore, an automatic paint-adding device controlled by a capacitive sensor was designed to replace paint boxes and achieve an automated paint-adding process.

[0022] An automatic paint-applying device controlled by a capacitive sensor includes: a mounting frame 1, with a mounting plate 11 at the bottom of the mounting frame 1. Peristaltic pumps 2 are arranged sequentially on the mounting plate 11, and the rotating end of the peristaltic pumps 2 extends outside the mounting plate 11. This design structure is mainly to facilitate opening the pump casing of the peristaltic pumps 2 for easy replacement of the pump tube. An infusion tube 3 for conveying paint is embedded in the rotating end of the peristaltic pumps 2. An operation plate 4 is also provided inside the mounting frame 1 and located at the top of the mounting plate 11. A transformer 5 is provided on the operation plate 4. At least one relay 6 is also provided on the operation plate 4 and wiredly connected to the transformer 5. The signal input terminal of the relay 6 is wiredly connected to the capacitive sensor 7 and receives the data signal from the capacitive sensor 7. The signal output terminal of the relay 6 is connected to the peristaltic pumps 2 and controls the operation of the peristaltic pumps 2.

[0023] This application allows for simple modifications. In actual operation, only the outlet end of the capacitive sensor 7 and the infusion tube 3 needs to be installed on the paint tank structure (this paint tank is a production equipment for enameled wire in the prior art, and is only shown as a simple schematic diagram in this embodiment without detailed drawings). The signal collected by the capacitive sensor 7 controls the operation of the relay 6, which in turn controls the motor of the peristaltic pump 2 to achieve forward and reverse rotation. Forward rotation transfers the paint liquid in the paint bucket to the paint tank through the infusion tube 3, while reverse rotation returns the paint liquid in the infusion tube 3 back to the paint bucket, thus changing the original manual painting method to "automatic painting controlled by the capacitive sensor 7". Specifically, the capacitive sensor 7 only needs to be vertically fixed above the original paint tank with a clamp, and then the sensing distance of the capacitive sensor 7 needs to be adjusted so that the liquid level sensed by the sensing point of the capacitive sensor 7 can submerge the copper wire. If the sensor fails to detect the paint level, it generates a control signal. Upon receiving this signal, the peristaltic pump 2 automatically starts, delivering paint into the paint tank via the delivery pipe 3. When the paint level in the tank reaches the sensor's detection position, the sensor sends a signal to stop the pump. At this point, the paint level must be sufficient to submerge the copper wire. This device replaces manual paint application, achieving automated paint application.

[0024] The applicant stated that the pump in this application is used to extract paint. Since paint is a high-viscosity and highly corrosive liquid, the extraction effects of different pumps were compared: diaphragm pumps are difficult to replace diaphragms, the blades of hydraulic pumps are corroded by highly corrosive paint, and mechanical pumps are expensive and have high power. In comparison, peristaltic pump 2 has moderate power, is easy to replace peristaltic tubing, and is inexpensive. Therefore, peristaltic pump 2 was finally selected as the pump for extracting paint. A model such as Watson-Marlow 323S can be selected, and its flow range meets the requirements. It is fixed to the mounting plate 11 with bolts.

[0025] Regarding the selection of the probe: The function of the probe in this application is to sense whether there is paint in the paint tank and transmit a signal; therefore, the ability to accurately sense the presence of paint in the tank is of paramount importance. For the selection of the probe, laser probes, liquid level probes, and capacitive probes were tested successively. Laser probes, because the object they sense is liquid, have low accuracy, and in some cases, the laser beam can penetrate the liquid and reach the bottom of the paint tank directly. Liquid level probes, when immersed in paint during use, may have paint adhere to the probe, causing it to continue sensing. Capacitive probes have a detection distance of 1-3mm, do not come into contact with the paint, and have high accuracy. Therefore, a capacitive probe was ultimately selected as the sensor for sensing paint, such as the Capacitec G200, which is connected to relay 6 via a signal line.

[0026] Mounting bracket 1 is constructed using European standard 2020L industrial aluminum profiles;

[0027] The infusion tubing 3 is made of silicone, which has good flexibility and corrosion resistance, and is fixed to the peristaltic pump 2 by tubing clamps, etc.

[0028] Relay 6 can be a model such as OMRON MY4NJ, and can be connected to the circuit on the operation panel 4 by soldering or plugging.

[0029] The operation panel 4 is also equipped with a switch panel 8, which is connected to the relay 6. Each circuit consists of a capacitive sensor 7, a relay 6, a switch panel 8, and a pump. The switch panel 8 is connected to the relay 6. By operating the button or switch on the switch panel 8, the relay 6 is turned on or off, thereby controlling the peristaltic pump 2. This provides manual mechanical control as an auxiliary guarantee, improving the operability and safety of the device.

[0030] The switch panel 8 includes a two-way double-control switch 81 and a reverse switch 82. The two-way double-control switch 81 controls the peristaltic pump 2 (specifically, the motor inside the peristaltic pump 2) to rotate in the forward direction to squeeze the tubing and control the paint in the infusion tube 3 to flow in the same direction. The reverse switch 82 controls the peristaltic pump 2 (specifically, the motor inside the peristaltic pump 2) to rotate in the reverse direction.

[0031] The infusion tube 3 includes a silicone tubing 31 embedded in the peristaltic pump 2. The silicone tubing 31 is U-shaped and extends to both ends of the peristaltic pump 2. L-shaped connecting tubes 32 are respectively sleeved at both ends of the silicone tubing 31, and the connecting tubes 32 are respectively connected to the transfer tubing 33. This structure facilitates the replacement of the peristaltic pump 2 tube and prevents the tubing from becoming difficult to draw due to bending and deformation. Secondly, when it is necessary to replace the peristaltic pump 2 tube, the peristaltic pump 2 tube, along with the connector and part of the tubing connected to the rigid tube, can be disassembled at the same time and replaced with a new tube, improving the tube replacement efficiency.

[0032] The dual-control switch 81 can control the peristaltic pump 2 to rotate 90° or rotate to 180° to reset. When the peristaltic pump 2 rotates 90°, the driver of the peristaltic pump 2 rotates, causing the connecting pipe 32 connected to the paint tank to enter the liquid. When the driver of the peristaltic pump 2 rotates 90°, it comes into contact with the inner wall of the peristaltic pump 2 and stops entering the liquid. Only when the peristaltic pump 2 continues to rotate can the paint squeeze point in the infusion pipe 3 be moved outward from the peristaltic pump 2 towards the paint tank.

[0033] The flow rate of the peristaltic pump 2 is 600ml / min-2000ml / min, and the high-flow peristaltic pump 2 is mainly used to pump high-viscosity PI paint.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic paint-applying device controlled by a capacitive sensor, characterized in that, include: Mounting frame (1), with a mounting plate (11) at the bottom of the mounting frame (1), peristaltic pumps (2) arranged in sequence on the mounting plate (11), and the rotating end of the peristaltic pump (2) extending outside the mounting plate (11). An infusion tube (3) for conveying paint liquid is embedded in the rotating end of the peristaltic pump (2). An operating plate (4) is also provided inside the mounting frame (1) and located at the top of the mounting plate (11). A transformer (5) is provided on the operating plate (4). At least one relay (6) is also provided on the operating plate (4) and is wired to the transformer (5). The signal input terminal of the relay (6) is wired to the capacitive sensor (7) and receives the data signal of the capacitive sensor (7). The signal output terminal of the relay (6) is connected to the peristaltic pump (2) and controls the operation of the peristaltic pump (2).

2. The automatic paint-applying device controlled by a capacitive sensor as described in claim 1, characterized in that, The operation panel (4) is also provided with a switch panel (8), which is connected to the relay (6); each circuit consists of a capacitive sensor (7), a relay (6), a switch panel (8) and a pump.

3. The automatic paint-applying device controlled by a capacitive sensor as described in claim 2, characterized in that, The switch panel (8) includes a two-way dual-control switch (81) and a reverse switch (82). The two-way dual-control switch (81) controls the peristaltic pump (2) to rotate in the forward direction, and the reverse switch (82) controls the peristaltic pump (2) to rotate in the reverse direction.

4. The automatic paint-applying device controlled by a capacitive sensor as described in claim 3, characterized in that, The infusion tube (3) includes a silicone tubing (31) embedded in the peristaltic pump (2). The silicone tubing (31) is U-shaped and extends to both ends outside the peristaltic pump (2). L-shaped connecting tubes (32) are respectively sleeved at both ends of the silicone tubing (31), and the connecting tubes (32) are respectively connected to the transfer tubing (33).

5. The automatic paint-applying device controlled by a capacitive sensor as described in claim 4, characterized in that, The dual-control switch (81) can control the peristaltic pump (2) to rotate 90° or rotate to 180° to reset.

6. The automatic paint-applying device controlled by a capacitive sensor as described in claim 1, characterized in that, The flow rate of the peristaltic pump (2) is 600ml / min-2000ml / min.

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