CN213102785U

CN213102785U - Spraying machine

Info

Publication number: CN213102785U
Application number: CN202021175020.XU
Authority: CN
Inventors: 穆小涛; 张金
Original assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Current assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-05-04
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses a spraying machine. Including drive module and information processing module, drive module is the high pressure control part, including the motor, connect the first controller of motor, information processing module is the low pressure control part, including the second controller, the speed regulator, the display, the plunger pump, electric connection has the magnetic isolator between first controller and the second controller, the first input port and the first controller of magnetic isolator are connected, first output port is connected with the second controller, the second input port is connected with the second controller, the second output port is connected with the first controller, the magnetic isolator carries out bidirectional transmission with the information of first controller and second controller. The utility model discloses a can realize electrical isolation, transmissible high frequency signal, factor of safety is high and the precision is high.

Description

Spraying machine

[ technical field ]

The utility model relates to an electric tool's technical field especially relates to a flush coater.

[ background art ]

In a high-power tool working system, particularly in a circuit which needs to transmit information between a high-voltage control circuit and a low-voltage control circuit, in order to avoid electric leakage of a low-voltage part which can be contacted by a human hand, the isolation between the high-voltage control circuit and the low-voltage control circuit and the double electrical isolation between a machine metal shell and an alternating current control system need to be realized, the personal safety is ensured, meanwhile, the accuracy of information transmission between the high-voltage control circuit and the low-voltage control circuit and the transmission of high-frequency information are also ensured, the accuracy is increased, and the anti-interference capability is enhanced.

Please refer to chinese patent No. CN104272601B, published in 2016, 3, 30, which discloses that a transformer is used to transmit signals between a first circuit and a second circuit, the first circuit receives digital signals and forms voltage pulses in a primary winding of the transformer, and the voltage pulses can be transmitted to the second circuit by magnetic induction coupling for information transmission, which realizes electrical isolation, but the transformer has an isolation function for high frequency signals and cannot transmit high frequency signals, so the transmission range is small.

[ contents of utility model ]

Not enough to prior art, an object of the utility model is to provide a high flush coater of security and accuracy.

The utility model provides a prior art problem can adopt following technical scheme: the method comprises the following steps: the driving module is a high-voltage control part and comprises a power supply, a motor and a first controller connected with the motor, and the first controller is connected with a voltage detection module and a current detection module; the information processing module is a low-voltage control part and comprises a second controller, a speed regulator electrically connected with the second controller, a display, a pressure sensor and a plunger pump, wherein the plunger pump is electrically connected with the second controller through the pressure sensor, a magnetic isolator is electrically connected between the first controller and the second controller, the magnetic isolator comprises a first input port, a first output port corresponding to the first input port, a second input port and a second output port corresponding to the second input port, the first input port is connected with the first controller, the first output port is connected with the second controller, the second input port is connected with the second controller, the second output port is connected with the first controller, information of the first controller is input from the first input port and is transmitted to the second controller through the first output port, information of the second controller is input from the second input port and transmitted to the first controller through the second output port.

The further improvement scheme is as follows: the driving module comprises a driving circuit, the driving circuit is respectively connected with the motor and the first controller, and the first controller controls the motor to rotate through the driving circuit.

The further improvement scheme is as follows: the speed regulator is a potentiometer, the second controller detects speed regulation information and transmits the speed regulation information to the first controller through the magnetic isolator, and the first controller controls the motor to rotate according to the speed regulation information.

The further improvement scheme is as follows: the second controller detects the pressure of the plunger pump through the pressure sensor, the pressure is transmitted to the first controller through the magnetic isolator, and the first controller performs feedback adjustment on the motor according to the pressure.

The further improvement scheme is as follows: the first controller detects the power supply voltage and current through the voltage detection module and the current detection module, judges the power supply voltage and current, outputs a protection signal, and transmits the protection signal to the second controller through the magnetic isolator, and the second controller displays the protection signal through the display.

The further improvement scheme is as follows: the first controller detects the rotating speed of the motor, transmits the rotating speed to the second controller through the magnetic isolator, and displays the rotating speed through the display.

The further improvement scheme is as follows: the motor is a sensorless brushless motor.

Compared with the prior art, the utility model discloses following beneficial effect has: the magnetic isolator is arranged between the driving module for controlling the motor and the information processing module for regulating the hand, the information of the motor and the power supply of the driving module is transmitted to the information processing module to be displayed, the speed regulating value and the pressure value of the information processing module can also be transmitted to the driving module, the two-way transmission of data can be carried out, high-frequency signals can be transmitted, the electrical isolation of high and low voltage can be realized, the safety degree is high, and the accuracy is high.

[ description of the drawings ]

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

FIG. 1 is a schematic view of the applicator of the present invention;

fig. 2 is a control circuit diagram of the coating machine of the present invention.

The meaning of the reference symbols in the figures:

100. coating machine 101, support base 102, body 103, motor 104, plunger pump 105, filter 106, regulation display portion 107, speed regulator 108, display 1, drive module 11, first controller 12, voltage detection module 13, current detection module 14, drive circuit 15, counter electromotive force detection circuit 2, information processing module 21, second controller 22, pressure sensor 3, magnetic isolator 31, first input port 32, first output port 33, second input port 34, second output port

[ detailed description of the invention ]

The present invention will be described in further detail with reference to the accompanying drawings and embodiments.

Referring to fig. 1, the spraying machine 100 of the present invention includes a supporting base 101, a body 102 mounted on the supporting base 101, a transmission assembly (not shown) and a motor 103 mounted in the body 102, a plunger pump 104 mounted outside the body 102, a filter 105, a spray gun (not shown) connected to the filter 105, and an adjusting display portion 106 adjacent to the motor 103, wherein the adjusting display portion 106 includes a speed regulator 107, a display 108 and a control circuit board. The transmission assembly drives the plunger pump 104 to reciprocate by the rotation of the motor 103, the plunger pump 104 is communicated with the filter 105 to suck the external material to be sprayed, and the material to be sprayed passes through the plunger pump 104 and the filter 105 and is sprayed out of the spray gun.

Referring to fig. 2, a control circuit diagram according to an embodiment of the present invention includes a driving module 1 and an information processing module 2, the driving module 1 is a high-voltage control part and comprises a positive power line, a negative power line, a motor 103 and a first controller 11 connected with the motor 103, the first controller 11 is connected with a voltage detection module 12 and a current detection module 13, the current detection module 13 comprises a sampling resistor R1 connected in series with a negative power line, the voltage detection module 12 is connected in parallel with the positive and negative power lines and is used for detecting the power voltage, the motor 103 is connected to the first controller 11 through a driving circuit 14, the driving module 1 further includes a back electromotive force detection circuit 15 connected to the motor 103 and the first controller 11, the first controller 11 detects the rotational position and the rotational speed of the motor by the back electromotive force detection circuit 15. The information processing module 2 is a low-pressure control part, and includes a second controller 21, a speed regulator 107 electrically connected to the second controller 21, a display 108, and a plunger pump 104 for delivering a spray material, and the plunger pump 104 is electrically connected to the second controller 21 through a pressure sensor 22. A magnetic isolator 3 is electrically connected between the first controller 11 and the second controller 21, the magnetic isolator 3 comprises a first input port 31, a first output port 32 corresponding to the first input port 31, a second input port 33, a second output port 34 corresponding to the second input port 33, the first input port 31 of the magnetic isolator 3 is connected to the first controller 11, the first output port 32 is connected to the second controller 21, the second input port 33 is connected to the second controller 21, the second output port 34 is connected to the first controller 11, information of the first controller 11 is input from the first input port 31 and transmitted to the second controller 21 through the first output port 32, information of the second controller 21 is input from the second input port 33 and transmitted to the first controller 11 through the second output port 34. The driving module 1 needs to detect voltage and current of a power supply, the high voltage of the driving module can affect the low-voltage information processing module 2, the magnetic isolator 3 is arranged between the driving module 1 and the information processing module 2 and transmits the voltage and the current by electromagnetic coupling, high-voltage and low-voltage electrical isolation can be realized, static electricity generated by a low-voltage control part which can be contacted by hands is avoided, the operation safety of the hands on the information processing module 2 is ensured, the pressure sensor 22 and a contacted tank body filled with spraying materials are ensured to be electrically isolated from an alternating current power supply, and the integral safety is improved.

In this embodiment, the speed regulator 107 is a knob corresponding to a potentiometer, the speed regulator 107 adjusts to different angles and has different speed regulating voltage values, and the first controller 11 stores duty ratios corresponding to the different speed regulating voltage values and corresponding pressure values. When the speed controller 107 is adjusted to a fixed position, the second controller 21 detects a voltage value of the potentiometer, converts the voltage value into a digital pulse signal, and sends the digital pulse signal from the second input port 33 to the first controller 11 through the second output port 34, and the first controller 11 drives the motor 103 to operate at a constant speed according to a corresponding duty ratio, and sets a pressure value at the same time. When the motor 103 operates, the pressure sensor 22 detects pressure in the plunger pump 104, a pressure value of the pressure is represented as a voltage value, the second controller 21 converts the voltage value into a digital pulse signal, and the digital pulse signal is sent to the first controller 11 from the second input port 33 through the second output port 34, the first controller 11 compares the pressure value with a set pressure value, performs PID adjustment through feedback, and controls the rotating speed of the motor to make the pressure value be the set pressure value.

The first controller 11 compares the power supply voltage value and the motor current value detected by the voltage detection module 12 and the current detection module 13 with an internal set value, if an overvoltage, an undervoltage or an overcurrent occurs, the first controller 11 controls the motor 103 to stop, converts an error signal into a digital pulse signal, and sends the digital pulse signal from the first input port 31 to the second controller 21 through the first output port 32, and the second controller 21 displays the fault information through the display 108. The first controller 11 detects the motor speed through the back electromotive force detection circuit 15, converts the motor speed into a digital pulse signal, and transmits the digital pulse signal from the first input port 31 to the second controller 21 through the first output port 32, and the second controller 21 displays the motor speed through the display 108. Meanwhile, the display 108 may also display information such as boot-up times, error times, and the like. The magnetic isolator 3 can carry out bidirectional transmission on data to ensure real-time feedback of information, and the magnetic isolator 3 can transmit high-frequency signals, so that the application range is wide and the accuracy is high.

The utility model discloses a be provided with magnetism isolator 3 between the information processing module 2 that drive module 1 at the control motor and be used for the staff to adjust, drive module 1 detects the information of motor 103 and power, sends information processing module 2 through magnetism isolator 3 and shows, information processing module 2 detects speed governing value and pressure value, sends drive module 1 through magnetism isolator 3, can carry out the bidirectional transmission of data, can transmit high frequency signal simultaneously, can realize the electrical isolation of high low pressure, and the degree of safety is high, and the accuracy is high simultaneously.

The present invention is not limited to the above-described embodiments. One of ordinary skill in the art will readily recognize that there are numerous other alternatives to the disclosed applicator without departing from the spirit and scope of the present invention. The protection scope of the present invention is subject to the content of the claims.

Claims

1. An applicator, comprising: the driving module is a high-voltage control part and comprises a power supply, a motor and a first controller connected with the motor, and the first controller is connected with a voltage detection module and a current detection module; the information processing module is a low-voltage control part and comprises a second controller, a speed regulator electrically connected with the second controller, a display, a pressure sensor and a plunger pump, wherein the plunger pump is electrically connected with the second controller through the pressure sensor; the method is characterized in that: the magnetic isolator comprises a first input port, a first output port corresponding to the first input port, a second input port and a second output port corresponding to the second input port, the first input port is connected with the first controller, the first output port is connected with the second controller, the second input port is connected with the second controller, the second output port is connected with the first controller, information of the first controller is input from the first input port and is transmitted to the second controller through the first output port, and information of the second controller is input from the second input port and is transmitted to the first controller through the second output port.

2. The applicator of claim 1, wherein: the driving module comprises a driving circuit, the driving circuit is respectively connected with the motor and the first controller, and the first controller controls the motor to rotate through the driving circuit.

3. The applicator of claim 2, wherein: the speed regulator is a potentiometer, the second controller detects speed regulation information and transmits the speed regulation information to the first controller through the magnetic isolator, and the first controller controls the motor to rotate according to the speed regulation information.

4. The applicator of claim 2, wherein: the second controller detects the pressure of the plunger pump through the pressure sensor, the pressure is transmitted to the first controller through the magnetic isolator, and the first controller performs feedback adjustment on the motor according to the pressure.

5. The applicator of claim 3 or 4, wherein: the first controller detects the power supply voltage and current through the voltage detection module and the current detection module, judges the power supply voltage and current, outputs a protection signal, and transmits the protection signal to the second controller through the magnetic isolator, and the second controller displays the protection signal through the display.

6. The applicator of claim 5, wherein: the first controller detects the rotating speed of the motor, transmits the rotating speed to the second controller through the magnetic isolator, and displays the rotating speed through the display.

7. The applicator of claim 6, wherein: the motor is a sensorless brushless motor.