Powder spraying controller

Abstract

The utility model relates to the technical field, in particular to a powder spraying controller which comprises a powder spraying detector and a controller, a feedback signal end of the powder spraying detector is connected with one end of a control portion of a first control switch, an anode of the powder spraying detector is electrically connected with a + 24VDC voltage end, and a cathode of the powder spraying detector is electrically connected with one end of a first control valve. The other end of the first control valve is electrically connected with one end of the output portion of the first control switch, the other end of the output portion of the first control switch is electrically connected with a + 24VDC voltage end, and the other end of the control portion of the first control switch, the negative electrode of the powder spraying detector and one end of the first control valve are all grounded. A control circuit is modified to achieve the automatic powder discharging function, an external drive-by-wire system independent of the powder spraying machine is introduced, control components are added, existing compressed air is combined, the automatic powder spraying function is achieved, the automation level of equipment is effectively improved, manual intervention is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit design, in particular to a powder spraying controller. Background Art

[0002] In the float glass manufacturing industry, powder sprayers are key pieces of equipment used to coat and treat glass surfaces. The powder sprayer's automated control system is crucial for its proper operation, particularly in controlling powder placement, spraying, and powder quantity adjustment. The LOGO controller is a common core control component responsible for managing these critical functions.

[0003] However, in actual applications, the LOGO controller in the powder spraying machine may have problems with component damage or functional failure. Such failures seriously affect the normal operation of the powder spraying machine, resulting in the powder spraying machine being unable to automatically load and spray powder, and the powder amount adjustment function is also limited, thereby affecting production efficiency and product quality.

[0004] Solving these problems requires specialized testing and repair. However, due to the aging and complex nature of the equipment, the likelihood of a successful repair is low. Furthermore, since the compatible LOGO controller has been discontinued, purchasing an upgraded model is not only expensive but also has a long lead time. Furthermore, compatibility and integration issues with the existing system are also problematic. Utility Model Content

[0005] The utility model proposes a powder spraying controller to solve the problem that the powder spraying machine cannot realize the automatic powder feeding and spraying functions due to damage of the LOGO controller in the existing powder spraying machine, thereby affecting the production efficiency and product quality.

[0006] The utility model is achieved through the following technical solutions:

[0007] A powder spraying controller includes a powder spraying detector and a controller, wherein the controller is ET200, a feedback signal end of the powder spraying detector is connected to one end of a control unit of a first control switch, a positive electrode of the powder spraying detector is electrically connected to a +24VDC voltage end, a negative electrode of the powder spraying detector is electrically connected to one end of a first control valve, the other end of the first control valve is electrically connected to one end of an output unit of the first control switch, the other end of the output unit of the first control switch is electrically connected to the +24VDC voltage end, and the other end of the control unit of the first control switch, the negative electrode of the powder spraying detector, and one end of the first control valve are all grounded;

[0008] The first signal output end of the controller is electrically connected to one end of the powder spray vibrator circuit, the second signal output end of the controller is electrically connected to one end of the compressed air solenoid valve circuit, the other end of the powder spray vibrator circuit is grounded, and the other end of the compressed air solenoid valve circuit is grounded.

[0009] Furthermore, the powder spray vibrator circuit includes a powder spray vibrator L1, a potentiometer R1, a second control switch and a first circuit breaker F1, one end of the powder spray vibrator L1 is electrically connected to one end of the potentiometer R1, the other end of the potentiometer R1 is connected to one end of the output part of the second control switch, the other end of the output part of the second control switch is connected to one end of the first fuse, the other end of the first fuse is connected to the 24VAC voltage end, and the other end of the powder spray vibrator L1 is grounded.

[0010] Furthermore, the compressed air solenoid valve circuit includes a second control valve, a third control switch and a second circuit breaker F2, one end of the second control valve is connected to one end of the output part of the third control switch, the other end of the output part of the third control switch is connected to one end of the second fuse, the other end of the second fuse is connected to the 24VAC voltage end, and the other end of the second control valve is grounded.

[0011] Furthermore, the first control switch is a powder solid-state relay K1, the positive terminal of the coil of the powder solid-state relay K1 is connected to the feedback signal terminal of the powder spraying detector, and the negative terminal of the coil of the powder solid-state relay K1 is grounded;

[0012] The first control valve is the powder discharge solenoid valve Y1, the common end of the powder solid-state relay K1 is connected to the +24VDC end, the normally closed contact end of the powder solid-state relay K1 is connected to the control end of the powder discharge solenoid valve Y1, and the ground end of the powder discharge solenoid valve Y1 is grounded.

[0013] Furthermore, the second control switch is a powder spraying solid-state relay K2.1, wherein the positive terminal of the coil of the powder spraying solid-state relay K2.1 is respectively connected to the powder spraying signal terminal and the +24VDC voltage terminal of the controller, the negative terminal of the coil of the powder spraying solid-state relay K2.1 is grounded, the common terminal of the powder spraying solid-state relay K2.1 is connected to one end of the first circuit breaker F1, the other end of the first circuit breaker F1 is connected to the 24VAC voltage terminal, the normally open contact end of the powder spraying solid-state relay K2.1 is connected to one end of the potentiometer R1, the other end of the potentiometer R1 is connected to the control end of the powder spraying vibrator L1, and the ground end of the powder spraying vibrator L1 is grounded.

[0014] Furthermore, the third control switch is an air blowing solid-state relay K2.2, the second control valve is a compressed air solenoid valve Y2, the positive terminal of the coil of the air blowing solid-state relay K2.2 is respectively connected to the air blowing signal terminal and the +24VDC voltage terminal of the controller, the negative terminal of the coil of the air blowing solid-state relay K2.2 is grounded, the common terminal of the air blowing solid-state relay K2.2 is connected to one end of the second circuit breaker F2, the other end of the second circuit breaker F2 is connected to the 24VAC voltage terminal, the normally open contact end of the air blowing solid-state relay K2.2 is connected to the control end of the compressed air solenoid valve Y2, and the ground end of the compressed air solenoid valve Y2 is grounded.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model proposes a powder spraying controller, which utilizes the original powder spraying detector of the powder spraying machine, transforms the control circuit to realize the automatic powder feeding function, introduces an external wire control system independent of the powder spraying machine, adds control components, and combines with the existing compressed air to realize the automatic powder spraying function, effectively improving the automation level of the equipment, reducing manual intervention, and improving production efficiency;

[0017] (2) The utility model proposes a powder spraying controller, which adds a potentiometer in the control circuit to realize the powder quantity adjustment function. By adjusting the potentiometer, the operator can accurately control the powder spraying quantity according to production needs, ensure the stability of product quality, and adapt to different process requirements;

[0018] (3) The powder spraying controller proposed in this utility model can be used for powder spraying control in float glass manufacturing, and can also be applied to other equipment with control start and stop functions, with a wider range of applications;

[0019] (4) The powder spraying controller proposed in the present invention can save the need for repair or replacement of old equipment by modifying the circuit structure when the original LOGO controller is damaged and cannot be repaired. At the same time, it is compatible with the existing circuit structure, has good adaptability and scalability, avoids the trouble caused by the suspension of production of the original equipment, and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a structural diagram of the overall device of a powder spraying controller proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the powder spraying and air blowing signal control circuit of a powder spraying controller proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of a powder-free detection circuit for a powder spraying controller proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the powder spraying and air blowing circuit of a powder spraying controller proposed by the utility model.

[0025] In the figure, 1-detector, 2-vibrator, 3-compressor; DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0027] Example 1

[0028] refer to Figure 1 , an existing powder sprayer, based on the existing powder sprayer, this embodiment utilizes the existing detector 1 and vibrator 2, and realizes partial transformation of the powder sprayer control mode by adding relays and potentiometers, retaining the core functions of the powder sprayer and further optimizing its energy efficiency.

[0029] A relay is installed in the powder discharging system of the powder sprayer to control the opening and closing of the powder discharging. The introduction of the relay enables the powder sprayer to automatically perform the powder discharging operation after receiving an external signal, thereby improving the automation level of the equipment.

[0030] At the same time, the control module ET200 is added. The ET200 cold-end line control module is responsible for detecting the glass arrival signal and is completely independent of the original control system of the powder sprayer. The introduction of this module can more accurately control the powder spraying timing during the operation of the powder sprayer, ensuring that the powder spraying process is closely integrated with the glass arrival status on the production line.

[0031] The improved dusting machine will use the factory's own compressed air system for dusting, and the dusting machine's own compressor 3 will be deactivated. This not only reduces equipment maintenance costs, but also significantly reduces the dusting machine's electricity consumption.

[0032] In this embodiment, the control circuit of the original powder spraying machine is improved, and the key components of the powder spraying machine are retained. The key components include a powder spraying detector 1 and a powder spraying vibrator 2. The powder spraying detector 1 is used to detect the powder state, and the powder spraying vibrator 2 is used to ensure the uniformity and stability of the powder during the powder spraying process. An external independent controller ET200 accurately detects the position of the glass and triggers the powder spraying process. Specifically:

[0033] A powder spraying controller includes a first control switch, which is a powder solid-state relay K1. The positive terminal of the coil of the powder solid-state relay K1 is connected to the feedback signal terminal of the powder spraying detector, and the negative terminal of the coil of the powder solid-state relay K1 is grounded. The powder spraying detector is a CAS powder spraying detector. When the detector detects powder in a material barrel, the feedback signal terminal transmits a signal to the positive terminal of the coil of the solid-state relay K1, so that the coil of the solid-state relay K1 is energized and the relay is triggered to close. When the detector detects that there is no powder, the detector has no feedback signal, and the coil of the solid-state relay K1 loses power and disconnects.

[0034] The negative terminal of the coil of the powdered solid-state relay K1 is grounded as the return path of the circuit to ensure the normal operation of the relay. When the positive terminal of the coil receives a signal and triggers the relay, the grounding of the negative terminal provides a return channel for the current and completes the circuit.

[0035] Through the above connection, relay K1 will be activated when the detector CAS detects that there is powder in the material barrel, thereby triggering other components connected to relay K1, such as the powder solenoid valve, to stop the powder feeding process. This ensures that the powder feeding process is only carried out when there is no powder in the material barrel, thereby avoiding unnecessary powder feeding and ensuring the normal operation of the powder sprayer.

[0036] The system includes a first control switch and a first control valve. The first control valve is the powder discharge solenoid valve Y1. The common terminal of the powder discharge solid-state relay K1 is connected to the +24VDC terminal, and the normally closed contact terminal of the powder discharge solid-state relay K1 is connected to the control terminal of the powder discharge solenoid valve Y1. The ground terminal of the powder discharge solenoid valve Y1 is grounded. The common terminal of the powder discharge solid-state relay K1 is connected to the +24VDC terminal to provide operating voltage for the powder discharge solid-state relay K1. When the +24VDC voltage is applied, the powder discharge solid-state relay K1 is in its initial state, ready to operate according to the feedback signal from the detector. When the powder discharge solid-state relay K1 is in its initial state (i.e., the normally closed contact is closed), the control terminal of the powder discharge solenoid valve Y1 receives current, and the solenoid valve Y1 opens, allowing the powder discharge operation to proceed. If the relay activates and the normally closed contact opens, the powder discharging solenoid valve Y1 is de-energized, shutting down the powder discharging process. The ground terminal of the powder discharging solenoid valve Y1 is grounded, providing a current loop for the solenoid valve to ensure its normal operation. When the control terminal receives a voltage signal, current flows through the solenoid valve coil and to the ground point, completing the control loop and actuating the solenoid valve Y1. Through the coordination of the powder solid-state relay K1 and the powder discharging solenoid valve Y1, if the detector CAS detects that the material bucket is empty and the detector does not provide feedback, the coil of the powder discharging solid-state relay loses power and disconnects, closing the normally closed contact of the powder discharging solid-state relay and initiating the powder discharging process, ensuring that the powder sprayer can replenish powder when needed. When powder is present in the material bucket, the detector provides feedback, energizing the coil of the powder discharging solid-state relay and closing the normally closed contact of the powder discharging solid-state relay. The action of the relay disconnects the control loop of the powder discharging solenoid valve, halting the powder discharging process and preventing excessive powder discharging.

[0037] refer to Figure 2-Figure 4, including a powder spray vibrator L1, a potentiometer R1, a second control switch and a first circuit breaker F1. The second control switch is a powder spray solid-state relay K2.1. The positive terminal of the coil of the powder spray solid-state relay K2.1 is respectively connected to the powder spray signal terminal and the +24VDC voltage terminal of the controller, the negative terminal of the coil of the powder spray solid-state relay K2.1 is grounded, the common terminal of the powder spray solid-state relay K2.1 is connected to one end of the first circuit breaker F1, the other end of the first circuit breaker F1 is connected to the 24VAC voltage terminal, the normally open contact end of the powder spray solid-state relay K2.1 is connected to one end of the potentiometer R1, and the other end of the potentiometer R1 is connected to the powder spray vibrator. The control terminal of actuator L1 and the ground terminal of powder spray vibrator L1 are grounded. When the controller issues a powder spray signal, the positive terminal of the coil of powder spray solid-state relay K2.1 receives the signal, preparing the relay to start. The +24VDC voltage terminal provides the voltage required for relay operation. The common terminal of powder spray solid-state relay K2.1 is connected to the 24VAC voltage terminal through the first circuit breaker F1. When powder spray solid-state relay K2.1 operates, circuit breaker F1 provides protection, ensuring safe circuit operation. When powder spray solid-state relay K2.1 operates, the normally open contact of powder spray solid-state relay K2.1 closes, causing potentiometer R1 to enter the operating state. By adjusting the resistance of potentiometer R1, the voltage across powder spray vibrator L1 can be controlled, thereby adjusting its vibration amplitude and powder spraying amount. By using potentiometer R1 and powder spray solid-state relay K2.1, the operating state of powder spray vibrator L1 can be precisely controlled by adjusting the resistance of potentiometer R1, thereby adjusting the powder spraying amount. The first circuit breaker F1 provides protection in the circuit, ensuring safe and stable operation.

[0038] It includes a second control valve, a third control switch and a second circuit breaker F2. The second control valve is a compressed air solenoid valve Y2. The third control switch is an air blowing solid-state relay K2.2. The positive terminal of the coil of the air blowing solid-state relay K2.2 is respectively connected to the air blowing signal terminal and the +24VDC voltage terminal of the controller, the negative terminal of the coil of the air blowing solid-state relay K2.2 is grounded, the common terminal of the air blowing solid-state relay K2.2 is connected to one end of the second circuit breaker F2, the other end of the second circuit breaker F2 is connected to the 24VAC voltage terminal, the normally open contact end of the air blowing solid-state relay K2.2 is connected to the control end of the compressed air solenoid valve Y2, and the compressed air circuit The grounding terminal of the magnetic valve Y2 is grounded. When the controller sends a blowing signal, the positive terminal of the coil of the blowing solid-state relay K2.2 receives the signal, and the relay is ready to start. The +24VDC voltage terminal provides working voltage for the relay. The common terminal of the blowing solid-state relay K2.2 is connected to the 24VAC voltage terminal through the second circuit breaker F2. When the blowing solid-state relay K2.2 is actuated, the circuit breaker F2 provides protection to ensure the safe operation of the circuit. When the blowing solid-state relay K2.2 receives the control signal, the normally open contact terminal K2.2 is closed, the control terminal of the compressed air solenoid valve Y2 is connected, and it starts to work. The compressed air is released for the powder spraying process.

[0039] In this embodiment, the compressed air supply line originally connected to the original compressor is switched to the factory's own compressed air system, so that the compressed air used in the powder spraying process comes from the existing system in the factory, rather than the original dedicated compressor. That is, the compressed air produced by the gas station is supplied to the entire factory through the air supply pipeline. There is an air supply pipeline interface near the powder spraying machine, and it can be directly connected from the interface.

[0040] The compressed air solenoid valve Y2 serves as a control device. By connecting to a new control circuit, it decides when to release compressed air for powder spraying. The powder spraying solid-state relay K2.1 is responsible for receiving the control signal. When powder spraying is required, K2.1 is activated to control Y2 to open, allowing compressed air to enter the powder spraying vibrator and start the powder spraying operation.

[0041] The ET200 module and its associated controller output signals, controlling the K2.2 air-blowing solid-state relay to operate. The K2.2 relay closes its normally open contacts, turning on the power to the solenoid valve Y2. This relay operation and the opening of the solenoid valve allow compressed air from the plant to enter the system, replacing the existing compressor.

[0042] The above shows and describes the basic principles and main features of the present utility model and the advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present utility model. Various changes and improvements are possible without departing from the spirit and scope of the present utility model. Such changes and improvements are within the scope of the present utility model. The scope of protection claimed in the present utility model is defined by the appended claims and their equivalents.

Claims

1. A powder spraying controller, comprising a powder spraying detector, characterized in that: The device further includes a controller, the model of which is ET200, wherein a feedback signal end of the powder spraying detector is connected to one end of the control part of the first control switch, the positive electrode of the powder spraying detector is electrically connected to the +24VDC voltage end, the negative electrode of the powder spraying detector is electrically connected to one end of the first control valve, the other end of the first control valve is electrically connected to one end of the output part of the first control switch, the other end of the output part of the first control switch is electrically connected to the +24VDC voltage end, and the other end of the control part of the first control switch, the negative electrode of the powder spraying detector, and one end of the first control valve are all grounded; The first signal output end of the controller is electrically connected to one end of the powder spray vibrator circuit, the second signal output end of the controller is electrically connected to one end of the compressed air solenoid valve circuit, the other end of the powder spray vibrator circuit is grounded, and the other end of the compressed air solenoid valve circuit is grounded.

2. A powder spraying controller according to claim 1, characterized in that: The powder spray vibrator circuit includes a powder spray vibrator L1, a potentiometer R1, a second control switch and a first circuit breaker F1. One end of the powder spray vibrator L1 is electrically connected to one end of the potentiometer R1, the other end of the potentiometer R1 is connected to one end of the output part of the second control switch, the other end of the output part of the second control switch is connected to one end of the first fuse, the other end of the first fuse is connected to the 24VAC voltage terminal, and the other end of the powder spray vibrator L1 is grounded.

3. A powder spraying controller according to claim 2, characterized in that: The compressed air solenoid valve circuit includes a second control valve, a third control switch and a second circuit breaker F2. One end of the second control valve is connected to one end of the output part of the third control switch, the other end of the output part of the third control switch is connected to one end of the second fuse, the other end of the second fuse is connected to the 24VAC voltage end, and the other end of the second control valve is grounded.

4. A powder spraying controller according to claim 1, characterized in that: The first control switch is a powder solid-state relay K1, the positive terminal of the coil of the powder solid-state relay K1 is connected to the feedback signal terminal of the powder spraying detector, and the negative terminal of the coil of the powder solid-state relay K1 is grounded; The first control valve is the powder discharge solenoid valve Y1, the common end of the powder solid-state relay K1 is connected to the +24VDC end, the normally closed contact end of the powder solid-state relay K1 is connected to the control end of the powder discharge solenoid valve Y1, and the ground end of the powder discharge solenoid valve Y1 is grounded.

5. A powder spraying controller according to claim 2, characterized in that: The second control switch is a powder spraying solid-state relay K2.1, wherein the positive terminal of the coil of the powder spraying solid-state relay K2.1 is respectively connected to the powder spraying signal terminal and the +24VDC voltage terminal of the controller, the negative terminal of the coil of the powder spraying solid-state relay K2.1 is grounded, the common terminal of the powder spraying solid-state relay K2.1 is connected to one end of the first circuit breaker F1, the other end of the first circuit breaker F1 is connected to the 24VAC voltage terminal, the normally open contact end of the powder spraying solid-state relay K2.1 is connected to one end of the potentiometer R1, the other end of the potentiometer R1 is connected to the control end of the powder spraying vibrator L1, and the ground end of the powder spraying vibrator L1 is grounded.

6. A powder spraying controller according to claim 3, characterized in that: The third control switch is the air blowing solid-state relay K2.2, and the second control valve is the compressed air solenoid valve Y2. The positive terminal of the coil of the air blowing solid-state relay K2.2 is respectively connected to the air blowing signal terminal and the +24VDC voltage terminal of the controller, and the negative terminal of the coil of the air blowing solid-state relay K2.2 is grounded. The common terminal of the air blowing solid-state relay K2.2 is connected to one end of the second circuit breaker F2, and the other end of the second circuit breaker F2 is connected to the 24VAC voltage terminal. The normally open contact end of the air blowing solid-state relay K2.2 is connected to the control end of the compressed air solenoid valve Y2, and the ground end of the compressed air solenoid valve Y2 is grounded.

Images