JPH048975A - Controller loading type electromagnetic control valve - Google Patents

Abstract

PURPOSE:To set controllers at the position operational easily to allow a remote control and to improve the operating efficiency, by connecting electromagnetic control valves and controllers to drive the valves with cables which can be mounted and demounted easily. CONSTITUTION:To an electromagnetic control valve 18, a pair of connectors 70 and 72 are connected electrically, and signal lines 74 and 76 are connected to the controllers 70 and 72 respectively. Furthermore, at the other ends of the signal lines 74 and 76, a pair of connectors 78 and 80 are connected, and controllers 82 and 84 are connected electrically to the connectors 78 and 80. Control signal lines 86 and 88 extended from the controllers 82 and 84 are connected to an instruction device, and depending on the instructions therefrom, the electromagnetic control valve 68 is remote-controlled. The electro-magnetic control valve 68 and the connectors 70 and 72 are connected by plug-in type armatures 90 and 92 to be mounted and demounted freely, and the controllers 82 and 84, and the connectors 78 and 80 can be also mounted and demounted by armatures 94 and 96 in the same manner. Consequently, the controllers 82 and 84 can be set in the positions operational easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a controller-equipped electromagnetic control valve, and more particularly to a controller-equipped electromagnetic control valve having a structure that allows easy adjustment of the controller.

[Prior Art] Conventionally, a controller-equipped electromagnetic control valve has an integrated structure in which the electromagnetic control valve and a control section are interconnected by a plug-in method, and a power supply line and control signal extending from the control section are connected to each other. By connecting the line to the command device, the solenoid control valve can be controlled from the command device. That is, the electric control circuit built into the control section consists of circuits as shown in FIGS. 9 and 10, and the electric control circuit is further housed in the casing of the control section having a structure as shown in FIG. Ru.

The electric control circuit 2 shown in FIG. 9 is formed on an electric circuit board, and has connection terminals 4 and 6 to which a power supply line from a command device is connected, and a command signal Vi from the command device is supplied. It is equipped with a signal input terminal 8, and after the bias of the command signal Vi is set by the adjustment section 10, the time constant of the signal is set by the delay phase circuit I2 which acts when the command goes up and the delay phase circuit 14 which works when the command goes down. After being further amplified by the gain adjustment section 16, the signal from the dither adjustment section 18 is added and supplied to the pulse width modulation circuit 20.

Then, one of the plug-in type armatures (provided in the control section) connected to the output end of the pulse width modulation circuit 20 and the other armature connected to the excitation coil R in the electromagnetic control valve are mutually connected. By fitting into the excitation coil R, the drive signal output from the pulse width modulation circuit 20 is supplied to the excitation coil R. In the figure, the electrical connections of the armatures are indicated by 22 and 24.

Here, the adjustment units 10 and 16 are provided to set the bias and gain of the command signal to the optimum state, and the two phase delay circuits 12 and 14 adjust the time constant of the command signal in order to move the load smoothly. Therefore, the dither control section 18 is provided to adjust the amount of dither so that the electromagnetic control valve always operates smoothly by applying slight vibrations to the electromagnetic control valve. Fine adjustment can be made by rotating adjustment knobs 10x, 12x, 14x, 16x, and 18x of trimmers and the like provided in each circuit with a screwdriver or the like.

The control circuit 2 shown in FIG. 10 includes a plurality of input terminals 26, 28, 30 for inputting a plurality of command signals transferred from a plurality of control switches 5ETI, 5ET2, 5ET3 provided in the command device, These input terminals 26,2
The electromagnetic control system is equipped with gain adjustment sections 32, 34, and 36 that amplify the signals inputted through 8.30, respectively, and processes the signals with the gains set in this way in a plurality of circuits similar to those shown in FIG. It is adapted to form a drive signal for controlling the valve. Also, each gain adjustment section 32°34.3
For fine adjustment of item 6, use trimmer adjustment knobs 32x and 34x.
, 36x with a screwdriver or the like.

Then, an electric control circuit 2 as shown in FIGS. 9 and 10 is provided.
As shown in FIG. 11, the housing 38 of the control section
9 and 1.
The input terminals 4, 6°8 and 26, 28.30 shown in Figure 0 are
A power supply line and a control signal line leading to the command device are connected through a hole 42 formed on one side of the housing 38. Further, a plug-in type armature (not shown) is installed upright on the bottom H of the housing 38, and is fitted into the other armature (not shown) provided on the housing 44 of the electromagnetic control valve. The configuration is such that the electrical connections 22 and 24 shown in FIG. 9 or 10 are realized. The plurality of protruding members X erected on the electric circuit board 4o are adjustment knobs of a trimmer or the like.

Furthermore, as shown in FIG.
8, and insert the screws 52 into the screw holes 48 provided in the top lid 46 and the screw holes 50 of the electric circuit board 4o. The structure is such that the electric circuit board 40 and the like are covered from the outside by screwing together the screws 52.

The controller-mounted electromagnetic control valve having such a structure is used in an appropriate manner according to various types of equipment, as shown in FIGS. 12 to 15.

First, FIG. 12 shows a case where a controller-mounted electromagnetic control valve 60 is directly attached to a hydraulic cylinder valve 58 for driving a load 56 placed on a base 54, and the controller section 62, 62 is attached to the base 54. Control panel 64 provided
It is wired so that it is controlled via a control signal line and a power supply line from.

FIG. 13 shows a controller-equipped electromagnetic control valve 6o installed in a separate position from a hydraulic cylinder valve 58 for driving a load 56 mounted on a base 54, and controlled by a control panel 64 provided on the base 54. It is configured to do this.

FIG. 14 shows a configuration in which a controller-equipped electromagnetic control valve 60 is installed in a storage chamber 66 of an arbitrary member, and is controlled by a control panel 64 provided at one end of the member. This is the applicable configuration.

FIG. 15 shows a load 56 to be driven by a hydraulic cylinder valve 58.
This is a case of equipment that is driven up and down by a load 56, and has a configuration in which a hydraulic cylinder valve 58 and a controller-mounted electromagnetic control valve 60 are installed above the load 56.

[Problems to be Solved by the Invention] As described above, in a controller-equipped electromagnetic control valve that has a structure in which a control unit is integrally assembled to the electromagnetic control valve by connecting a plug-in type armature, There have been problems such as the adjustment knob of the control circuit being complicated to operate, and the installation being difficult depending on the location.

That is, as shown in FIG. 11, in order to operate the adjusting knob After removing it from the housing 38, operate the adjustment knob X with a screwdriver or the like.

Therefore, the operation becomes complicated, and if it is installed at a high place as shown in FIG. 15, it becomes even more complicated.
When installed in a narrow area as shown in the figure, there were problems such as difficulty in adjustment.

In addition, the adjustment knob can only be operated with the control part still attached to the solenoid control valve, so it may not be possible to perform optimal adjustment, or it may be difficult to perform adjustment work under special conditions. There were problems such as the need for operating equipment.

Furthermore, since adjustment work was done by intuition while looking at the rotation angle of the adjustment knob, etc., if it was installed in a location with poor visibility, it would be extremely difficult to make adjustments, and it would be difficult to make accurate adjustments. There were problems such as not being able to do so.

The present invention has been made in view of such problems,
It is an object of the present invention to provide a controller-equipped electromagnetic control valve that can be easily adjusted, as well as a controller-equipped electromagnetic control valve that has a function of checking the adjusted state.

[Means for Solving the Problems] In order to achieve such an object, the present invention connects an electromagnetic control valve and a control unit that drives the electromagnetic control valve with a detachable cable device.

In another embodiment, the cable device is provided with a display means such as an indicator light for displaying power supply to the electromagnetic control valve from the control section.

Furthermore, as another embodiment, the cable device is provided with display means such as a current detector for displaying the value of the current supplied from the control section to the electromagnetic control valve.

Furthermore, in another embodiment, the display means has a built-in power supply means for operating the display means itself.

Furthermore, in another embodiment, the display means includes a power supply means for supplying power to the display means itself, and a power supply means for supplying power to the display means from the power supply means only when power is supplied from the control section to the electromagnetic control valve. The structure includes a built-in switching means for supplying power.

[Function] According to the controller-mounted electromagnetic control valve of the present invention having such a configuration, the electromagnetic control valve and the control section are connected by a detachable cable device, so the control section can be placed in a location where it is easy to operate. Once installed, remote control becomes possible, improving operability and safety. Furthermore, since the display means is provided on the control section side, adjustments can be made while checking the operating status of the control section, and highly accurate adjustments can be made.

[Example] Hereinafter, an example of the controller-equipped electromagnetic control valve according to the present invention will be described with reference to the drawings.

First, the overall schematic structure will be explained based on FIG. In FIG. 1, a pair of connecting connectors 70 and 72 are electrically coupled to the electromagnetic control valve 68, and the respective connecting connectors 70 and 72 are electrically connected to each other.
A signal line 74°76 is connected to 0.72. Furthermore,
A pair of connection connectors 78.80 are connected to the other ends of each of the signal lines 74.8.
Control units 82 and 84 are electrically coupled to the control units 82 and 84.

Control signal lines 86 and 88 extending from each control unit 82 and 84 are connected to a command device (not shown), so that the electromagnetic control valve 6 is operated according to instructions from the command device.
8 can be controlled remotely.

As shown in FIG. 2, the electromagnetic control valve 68 and the connecting connector 70 (72) are removably connected by a plug-in type armature 90, 92, and the control part 82 (84)
and the connecting connector 78 (80) are also configured to be removably connected by plug-in type armatures 94 and 96, respectively. An electric circuit board having a circuit as shown in FIGS. 9 and 10 is housed in the housing of each control section 82 (84).

Further, on the negative side of the connector 78 (80), there is a power switch 9 for switching on or off the power from the control unit 82 (84) to the connector 78 (80).
5. An indicator light 98 such as a light emitting diode that lights up when the power switch 96 is turned on, and a display device 100 that displays the value of the supply current flowing from the control section 82 (84) to the connection connector 78 (80) are provided.

FIG. 3 shows, for example, a configuration in which the display device 100 displays voltage. FIG. 4 shows a configuration in which a display device 100 measures a current value with a current detection unit 102 provided in series with one power supply line, and displays the measured value on a display unit 104 such as a liquid crystal display device. .

Note that 106 is a battery for driving the current detection unit 102, and 108 is a switch.

Further, as shown in FIG. 5, an analog display ammeter 110 may be applied to the display device 100.

Indicator light 98 then operates in the circuit shown in FIG. 6 or 7. First, the circuit shown in FIG. 6 consists of a resistor R1 connected in series to a power supply line, a resistor R2 and a light emitting diode
are connected in parallel to light up the light emitting diode 112. On the other hand, the circuit shown in FIG. 7 lights up the light emitting diode 112 by connecting the Zener diode 114 in parallel to the resistor R1 connected in series to the power supply line, and further connecting the resistor R2 and the light emitting diode 112 in parallel. let

By using the circuit shown in FIG. 7, display with less flickering can be achieved.

Furthermore, FIG. 8 shows a circuit of another display device example.

This reduces the power consumption of the battery 106 by turning on the switch 108 in the circuit shown in FIG. 4 only when power is supplied. That is,
A galvanometer circuit 1 in which a Zener diode 116 is connected in series to a power supply line, and a Zener diode 118 and a resistor R3 are further provided in parallel with the Zener diode 116.
20, the switch 114 is turned on in synchronization with the generation of a predetermined voltage across the resistor R3 when energized, and the switch 114 is turned off when not energized.

In this embodiment, as shown in FIG. 2, the display device and the indicator light are both provided, but only one of them may be provided.

As explained above, according to this embodiment, the electromagnetic control valve and the control section are connected by a detachable cable device, so the control section can be installed in an easily accessible location and can be remotely controlled. This makes it possible to improve operability. Furthermore, since a display device or an indicator light is provided on the control section side, adjustments can be made while checking the operating status of the control section, so that highly accurate adjustments can be made.

[Effects of the Invention] As explained above, according to the present invention, the electromagnetic control valve and the control section are connected by a detachable cable device, so the control section can be installed at a location where it can be easily operated and remote control can be performed. This makes it possible to improve operability. Furthermore, since a display device or an indicator light is provided on the control section side, adjustments can be made while checking the operating status of the control section, so that highly accurate adjustments can be made.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a schematic configuration of one embodiment; Fig. 2 is an explanatory diagram showing the configuration of Fig. 1 in more detail; Figs. 3, 4, and 5 are illustrations in the embodiment. An explanatory diagram showing the circuit of the device; FIGS. 6 and 7 are explanatory diagrams showing the circuits associated with the indicator lights in the embodiment; FIG. 8 is an explanatory diagram showing the circuits of other display devices; FIGS. Figure 10 shows the control inside the control unit. Figure 11 is an explanatory diagram showing the configuration of a conventional controller-equipped solenoid control valve. Figures 12, 13, 14, and 15 show the conventional controller-equipped solenoid valve installed in various equipment. FIG. Code near in the figure 0.72: Connection connector 74.76: Signal line 78.80: Connection connector 82.84: Control section 90.92.94.96: Armature 98: Indicator light 100: Display device 106: Battery 114, switch 120: Explanatory diagram showing the circuit of the galvanometer circuit; Fig. 1 Fig. 2 Fig. 6 Fig. 4 Fig. 8 Fig. 12 Fig. 13 Fig. 14 Fig. 15

Claims (1)

[Scope of Claims] (1) A controller-equipped electromagnetic control valve, characterized in that an electromagnetic control valve and a control section for driving the electromagnetic control valve are connected by a detachable cable device. (2) The controller-equipped electromagnetic control valve according to claim 1, wherein the cable device is provided with display means for indicating power supply from the control unit to the electromagnetic control valve. (3) The controller-equipped electromagnetic control valve according to claim 1, wherein the cable device is provided with display means for displaying the value of the current supplied from the control unit to the electromagnetic control valve. (4) In the controller-equipped electromagnetic control valve according to claim (2) or (3), the display means has a built-in power supply means for operating the display means itself. (5) In the controller-mounted solenoid control valve according to claim (2) or (3), the display means includes a power supply means for supplying power to the display means itself, and a power supply means for supplying power to the solenoid control valve from the control section. It is characterized by incorporating a switching means for causing power to be supplied from the power supply means to the display means only when the power supply means is supplied.