KR100348732B1 - Operating method of a solenoid valve by series correspondence in spray machine and thereof device - Google Patents

Abstract

The present invention relates to a method of operating a solenoid valve used in a spray machine for operating in a serial communication manner an electric power source for operating a solenoid valve for coloring work such as paint using a spray gun or the like mounted on a rotating device. In order to make the electrical connection device easier to configure, it uses a serial power supply method, and is controlled by a control unit equipped with a receiver and a transmitter to amplify the operating voltage for operating the solenoid valve. Provide a possible means.

Description

OPENTING METHOD OF A SOLENOID VALVE BY SERIES CORRESPONDENCE IN SPRAY MACHINE AND THEREOF DEVICE}

The present invention relates to a method of operating a solenoid valve used in a spray machine and a device used therein, and in particular, to amplify an operating voltage for operating a solenoid valve for coloring work such as paint using a spray gun mounted on a rotating device. The present invention relates to a method of operating a solenoid valve used in a spray machine and a device used therein for operating a solenoid valve using a serial communication method.

The conventional spraying machine for coloring has a structure as shown in FIG. 1, and the spraying apparatus 10 is operated on an object to be sprayed through the control device shown in FIG. 2C to perform coloring and the like.

This injector 10 is basically a rotary device 40 consisting of a plurality of rims 41 with a plurality of spray guns 52 and a rotating shaft 42 with a pulley 25 and the rotary device 40 An electric drive 20 composed of a transmission 22 equipped with a motor 21 and a pulley 23 for driving, and an electric slip ring assembly 31 connected with a pneumatic supply pipe 32 and an electric wiring pipe 33. It consists of the connection device 30.

In addition, the slip ring assembly 31 is connected to the rotating shaft 42 of the rotary device 40, and has a structure as shown in Figure 2a. That is, it is essentially provided with a brush connection terminal 35 and a slip ring connection terminal 34 for supplying power to the solenoid valve 51 through the other electric supply line 36 ', In order to fix the brush connection terminal 35, a fixing plate including a plurality of legs is mounted up and down. Also, the proximity switch 38, the proximity terminal 39, and the sensing line 37 are mounted to sense the rotational speed of the rotating shaft 42 that rotates together with the slip ring connecting terminal 34.

The method and apparatus for operating a solenoid valve 51 mounted in such a conventional spray machine is made through a configuration as shown in FIGS. 2B and 2C. As shown in FIG. 2B, the slip ring connecting terminal 34 and the brush connecting terminal 35 have the same number as the number of solenoid valves 51 mounted on the rotating device 40 to operate the spray gun 52. The voltage supplied to these connection terminals 34 and 35 is controlled by the controller so as to simultaneously or selectively supply the same voltage.

However, in this conventional manner, in order to drive the solenoid valve 51 for operating the spray gun 52, the same number of slip ring connecting terminals 34 and brush connecting terminals 35 as the number of the solenoid valves 51 are provided. Need. Therefore, when a plurality of injection nozzles are required in a small installation space, installation is impossible, and the design is very difficult due to the limitation of the size of the electrical connection device 30.

In addition, the size of the electrical connection device 30 is not only cumbersome to install, but also has to provide a number of devices according to the required number, respectively, the manufacturing cost is high, and thus the production cost is a reason. In addition, since the connection terminals are connected to each other, the occurrence rate of the failure increases, and it is also very inconvenient to find a component in which the failure occurs.

Accordingly, an object of the present invention is to provide a solenoid valve operating voltage for operating a solenoid valve for coloring work such as paint using a spray gun or the like mounted on a rotating device to solve the above problems by serial communication. The present invention provides a method of operating a solenoid valve used in a spray machine for operating the valve and an apparatus used therefor.

Another object of the present invention is to provide a means that can be controlled through a control unit by using a serial power supply method to make the electrical connection device more easily configured, and equipped with a receiving device and a transmitting device for the power supply. Is in.

This feature of the present invention comprises an electrical connection device comprising a plurality of slip ring connection terminals and a plurality of brush connection terminals integrally with a rotary device equipped with a plurality of spray guns operated by a plurality of solenoid valves controlled by a control unit. An apparatus mounted on an injection apparatus rotated by a driving apparatus, in particular, the control unit is equipped with a transmitting apparatus composed of an input circuit, a CPU, a transmission signal converter, and a regulator; The rotating shaft extending from the rotating device is equipped with a receiving device consisting of a receiving signal converter, a CPU, an output circuit and a regulator; A plurality of slip ring terminals and a plurality of brush terminals are composed of up to three pairs, one of which is used as a means for transmitting electronic and / or electrical signals, and the other two pairs apply a voltage to the solenoid valve. It consists of an electrical supply device used as a means to operate a solenoid valve used in a spray machine in a serial communication method.

In addition, another feature of the present invention operates a plurality of spray guns mounted for spraying paint and the like on an electric drive device composed of a plurality of slip ring connection terminals and a plurality of brush connection terminals and a driving device in which a rotary device is integrally combined. In particular, the solenoid valve 51 for controlling the controller is equipped with a transmitting device composed of an input circuit, a CPU, a transmitting signal converter and a regulator, and a receiving unit consisting of a receiving signal converter, a CPU, an output circuit, and a regulator on a rotating shaft. Two pairs of slip ring connections for mounting a device and used as means for applying voltage to a brush connection terminal and a solenoid valve, which are used as means for transmitting electronic and / or electrical signals. Directly apply constant voltage for solenoid valve operation through the terminal and brush connection terminals. A pair of slip ring connecting terminals, a brush connecting terminal, and an electric and / or electronic signal transmitted from the control unit to the transmitting device through the transmitting device and the receiving device so that a base current is applied to each transistor connected to the noid valve. It relates to a method of operating a solenoid valve used in a spray machine in a serial communication method that converts a signal and applies a voltage to each transistor to amplify the solenoid valve operating voltage so that the spray gun is operated.

In order to configure the present invention more appropriately, each signal converter is RS232, RS422 or RS485, which is a kind of transmission / reception scheme, and the voltage applied to each CPU 620 and 720 is about 5 volts. The voltage applied through the pair of slip ring and brush connection terminals is preferably about 24 volts.

1 is a perspective view schematically showing an injection device equipped with a slip ring connecting device for supplying a voltage for operating a solenoid valve used in a spray machine according to a conventional manner;

Figure 2a is a perspective view showing in more detail the internal structure of the slip ring connecting device mounted on Figure 1,

FIG. 2B is a schematic diagram illustrating a state in which a voltage is supplied by the apparatus of FIG. 2A;

FIG. 2C is a block diagram schematically illustrating a state in which a voltage is supplied by the apparatus shown in FIG. 2B.

3a is a schematic configuration diagram of a slip ring connecting device in which a solenoid valve used in a spray machine is operated by a method according to the present invention;

3b is a block diagram showing an apparatus for controlling a solenoid valve by a method according to the invention.

* Description of the main parts of the drawings *

10 ... injection unit 20 ... drive unit

21 ... motor 22 ... transmission

23,25 ... pulley 24 ... belt

30 ... Electrical connection 31 ... Slip ring assembly

32 ... pneumatic supply line 33 ... electrical wiring line

34,340 ... Slip ring connection terminal 35,350 ... Brush connection terminal

36,36 '... Electrical supply line 37 ... Detection line

38 ... Proximity switch 39 ... Proximity terminal

40 ... rotating gear 41,410 ... rim

42,420 ... rotary shaft 51,510 ... solenoid valve

52,520 ... spray gun 100 ... electricity supply

600 ... transmitter 610 ... input circuit part

620,720 ... CPU 630,710 ... Converters

640,740 ... Voltage stabilizer 700 ... Receiver

730 ... output circuit

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3A and 3B. First, Figure 3a is a schematic configuration of a slip ring connecting device to operate the solenoid valve 510 used in the spray machine by the method according to the present invention, the transmitter 600, the electricity supply 100 and the receiver ( Except for 700, the basic configuration is the same as the apparatus shown in FIG. That is, the basic configuration refers to the rotary device 40 to which the solenoid valve 51 and the spray gun 52 are mounted, and the drive device 20 to rotate the rotary device 40.

First of all, the present invention is equipped with a transmitting device 600 in the control unit, the control unit by mounting the receiving device 700 to be rotated with the rotating shaft 420 on the rotating shaft 420 mounted to be inserted into the electricity supply device 100 To operate the solenoid valve 510 mounted on the rim 410 of the rotating unit.

In more detail, as illustrated in FIG. 3B, the electricity supply device 100 includes a transmitter 600 mounted to a control unit, a brush connection terminal 350 connected to the transmitter 600, and A slip ring connecting terminal 340 electrically connected to the brush connecting terminal 350, a receiving device 700 connected to the slip ring connecting terminal 340, and a solenoid 510 connected to the receiving device 700. It is composed.

The slip ring connecting terminal 340 and the brush connecting terminal 350 are configured in three pairs, and one pair of the three pairs of the slip ring connecting terminal 340 and the brush connecting terminal 350 is the transmitting device 600. It is used to transmit a signal applied from, and the remaining two pairs of the connection terminal 340 and the brush connection terminal 350 is used to apply a voltage for driving the solenoid valve 510. That is, in the present invention, the respective slip ring connection terminal 340 and the brush connection terminal 350 are not required for each solenoid valve 510.

The transmitter 600 also includes an input circuit 610, a CPU (central processing unit) 620, a regulator 640 (for providing a stable voltage to the CPU 620) and a signal converter 630. The receiver 700 is composed of a signal converter 710, a CPU 720, and an output circuit 730 connected to the slip ring connection terminal 340 similarly to the transmitter 600. The converters 630 and 710 used in this embodiment may be RS232, RS422 or RS485 as a kind of a transmission / reception scheme. It converts into a promised signal such as to ensure a malfunction-free communication.

With such a configuration, first, the control unit transmits an input value to the input circuit 610 through the plurality of transistors TR1 to TRn, and the input value is again processed by the CPU 620 in the input circuit to the signal converter 630. It is sent out. In the signal converter 630, an input value is converted into an electronic signal and transmitted to one of the slip ring connection terminals 340 through one of the brush connection terminals 350, and the signal converter 710 mounted on the receiver 700 again. The signal is converted into an electrical signal through the CPU 720 and the output circuit 730 of the receiver 700 to transmit a signal to each solenoid valve 510 through a plurality of transistors TR1 'to TRn'.

In other words, when a certain amount of current flows through each of the transistors TR1 to TRn in the control unit, an electrical signal is converted into an electronic signal through the transmission device 600 to receive the reception device through the connection terminals 350 and 340. 700, which is then converted back into an electrical signal to amplify a voltage applied to the solenoid valve 510 by flowing a certain amount of current through each of the transistors TR1 'through TRn' which causes the solenoid valve 510 to operate. To open and close each solenoid valve 510.

The transistor shown in FIG. 3B uses an emitter grounding method among the emitter, base, and collector grounding methods, which causes higher amplification to operate the solenoid valve 510 more stably. Therefore, the connection method of the transistor used in the present invention is not limited only to the emitter grounding method.

And a line for supplying a constant voltage (in this case about 24 volts) for operating the solenoid valve 510 is connected separately from the control unit, the remaining two pairs of brush connection terminal 350 and the slip ring connection terminal 340 It is connected to the solenoid valve 510 through.

In addition, the voltages for driving the CPUs 620 and 720 mounted on the transmitter 600 and the receiver 700 are divided by a predetermined amount of voltage (about 5 volts) from a line connected separately to apply the constant voltage. In order to maintain the voltage supplied at this time, the regulators 640 and 740 are mounted on the line to which the voltage is supplied to stabilize the driving of the CPUs 620 and 720.

Through the configuration of the present invention, the solenoid valve 510 can be driven by driving the relay of the solenoid valve 510 using only a power signal for driving the solenoid valve 510 and a signal of a serial communication method.

According to the present invention, even when a plurality of solenoid valves are mounted and used, at least three pairs of slip ring connection terminals 340 and brush connection terminals 350 can be used to control each solenoid valve, thus providing an electric supply device. The configuration of can be made relatively simple, and there is also an effect of reducing the element from which a failure can occur.

In addition, according to the present invention, since the number of slip ring connection terminals and brush connection terminals constituting the electric supply device can be reduced, manufacturing cost is reduced, and the advantage of easier installation even in a narrow installation place according to such a design is provided. have.

In addition, the design of the electric supply device does not vary according to the number of solenoid valves to be mounted, that is, it is possible to maintain a constant design without mounting the pair of slip ring and brush connection terminals equal to the number of solenoid valves. Therefore, there is an advantage that does not need to produce a product according to each capacity.

Claims (4)

A plurality of spray guns 52 operated by a plurality of solenoid valves 51 controlled by a control unit, the electrical connection device 30 consisting of a plurality of slip ring connection terminals 34 and a plurality of brush connection terminals 35. In the injection device 10 is configured integrally with the mounted rotary device 40 is rotated by the drive device 20, The control unit is equipped with a transmitting device (600) consisting of an input circuit (610), a CPU (620), a signal converter (630) and a regulator (640); A rotating device 420 extending from the rotating device is equipped with a receiving device 700 composed of a signal converter 710, a CPU 720, an output circuit 730, and a regulator 740; The plurality of slip ring connection terminals 340 and the plurality of brush connection terminals 350 are configured in maximum of three pairs, one of which is used as a means for transmitting electronic and / or electrical signals, and the other two pairs. Is a device for operating a solenoid valve used in a spray machine in a serial communication system consisting of an electrical supply device (100) used as a means for applying a voltage to the solenoid valve (510). 2. The signal converter (630, 730) uses RS232, RS422, or RS485, which is a type of transmission / reception scheme, and the voltage applied to the CPU (620, 720) is about 5 volts, and the solenoid valve 510 is operated. Apparatus for operating a solenoid valve used in a spray machine in a serial communication method characterized in that the voltage applied through the two pairs of slip ring connection terminal 340 and brush connection terminal 350 is about 24 volts. For spraying paint or the like on the driving device 20 in which the electrical connection device 30 composed of a plurality of slip ring connection terminals 34 and a plurality of brush connection terminals 35 and the rotating device 40 are integrally coupled. In a method of controlling a solenoid valve (51) for operating a plurality of spray guns (52), The control unit is equipped with a transmitter 600 composed of an input circuit 610, a CPU 620, a signal converter 630 and a regulator 640, a signal converter 710, CPU 720 on the rotating shaft 420 And a receiver 700 comprising an output circuit 730 and a regulator 740, and a brush connection with a pair of slip ring connection terminals 340 used as a means for transmitting electronic and / or electrical signals. Constant voltage for operating solenoid valve 510 through the two pairs of slip ring connection terminals 340 and brush connection terminal 350 used as a means for applying a voltage to terminal 350 and solenoid valve 510. Is directly applied, and the pair of slip ring connection terminals 340 and the brush connection terminals 350 and the transmitter 600 are applied so that a base current is applied to each of the transistors TR1 'to TRn' connected to the solenoid valve 510. And transmitted from the control unit to the transmitting device through the receiving device 700 Converts the electronic and / or electronic signals into electronic and / or electrical signals, and applies a voltage to each of the transistors TR1 'to TRn' to amplify the operating voltage of the solenoid valve 510 so that the spray gun 520 is operated. How to operate solenoid valves used in spray machines by serial communication. 4. The signal converter (630, 710) uses RS232, RS422, or RS485, which is a type of transmission / reception, and the voltage applied to the CPUs (620, 720) is about 5 volts, and each solenoid valve 510 is operated. In order to operate the solenoid valve used in the spray machine in the serial communication method, characterized in that the voltage applied through the two pairs of slip ring connecting terminal 340 and the brush connecting terminal 350 is about 24 volts.