JPH06173901A - Laminated type fluid controller - Google Patents

Abstract

PURPOSE:To simply perform work of repair or circuit variation by mounting a pressure switch on a manifold without laminatingly arranging it together with a laminated type control valve, and dispensing with detachment of an electric distribution of the pressure switch following detachment of the laminated type control valve. CONSTITUTION:A pressure switch 7 is connected to a load passage 5A and projected from the other side face 1B of a manifold 1 besides a laminated type control valve 10 selectively laminatingly arranged on the top face of the manifold 1 where after positioning a pilot operational type changeover valve 18 on its top step. The electric windings inside the multiple conductor cable 43 of the pressure switch 7 are electrically connected to a terminal stand 35 inside a terminal box 34 via the electric wiring 42 of the connector member 41 by detachably screading the connection part 43A of a multiple conductors cable 43 to the connector member 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated fluid control device having a pressure switch which is operated by the pressure of a load passage connected to an actuator.

[0002]

2. Description of the Related Art Conventionally, there is a laminated fluid control device of this type as shown in FIG. 7 of Japanese Utility Model Publication No. 1-34721. This is a laminated control valve 50, 51, 52 in which an electromagnetic switching valve 53 is located at the uppermost stage on the upper surface of a manifold 49 and fluid passages are standardized in the upper and lower surfaces to penetrate therethrough.
Are selectively stacked to constitute an actuator operation control circuit. Then, the laminated type pressure switch 54 is connected to the manifold 4 together with the laminated control valves 50, 51 and 52.
9 is laminated on the upper surface of 9 and electrically connected so that the pressure switch 54 operates when the pressure of the load flow path connected to the actuator reaches a set pressure value and outputs an electric signal to a load such as an external alarm. It is provided.

[0003]

However, in such a structure, the pressure switch 54 is provided in the laminated control valves 50, 51, 5.
2 is laminated on the upper surface of the manifold 49 together with 2, so that laminated control valves 50, 51,
When the 52 is removed from the manifold 49, the electrical wiring 5 of the pressure switch 54 is electrically connected to an external voltage source or load.
5, the pressure switch 54 is attached to the laminated control valve 50,
Since it has to be removed and reattached together with 51 and 52, there is a problem that the work is troublesome. The present invention solves such a problem by mounting a pressure switch on a manifold without arranging the laminated control valve together with the laminated control valve, thereby eliminating the need to remove the electrical wiring of the pressure switch accompanying the removal of the laminated control valve. It is intended to provide a laminated fluid control device capable of simplifying the work of repair and circuit change.

[0004]

Therefore, according to the first aspect of the present invention, the supply flow path connected to the pressure source and the low pressure flow path connected to the low pressure side extend in the longitudinal direction and are connected to the actuator. It has a manifold formed inside to open the load flow path on the side surface in the longitudinal direction, and the flow path that communicates with the supply flow path, the low pressure flow path, and the load flow path on the upper surface of this manifold is standardized and formed with openings. On the surface, the pilot operated switching valve is located at the uppermost stage, and the stacked control valve is selectively stacked.The solenoid valve that pilot-operates the switching valve and the solenoid valve that controls the flow direction of this pilot valve Each of the manifolds is equipped with a terminal box that internally houses a terminal block for electrically connecting electrical wiring from the outside, and it is detachably connected to the load channel that opens on the side of the manifold. A is provided switch. According to a second aspect of the present invention, a pilot channel is provided at the uppermost stage on the upper surface of a manifold in which a supply channel connected to a pressure source, a low pressure channel connected to a low pressure side, and a load channel connected to an actuator are formed inside. Operated switching valves are located and the flow paths communicating with each flow path of the manifold are standardized on the upper and lower surfaces of the main body, and the laminated control valves with through openings are selectively arranged in layers and the switching valves are pilot operated. Provide each manifold with a terminal box that houses a solenoid valve that controls the flow direction of the pilot fluid and a terminal block that electrically connects the external electrical wiring for this solenoid valve, and connect it to the load flow path of the manifold. The pressure switch is provided and the electric wiring of the pressure switch is electrically connected to the terminal block in the terminal box.

[0005]

In the structure of claim 1 of the present invention, the switching valve located at the uppermost stage of the laminated control valve selectively laminated on the mounting surface of the upper surface of the manifold is provided in the pilot operated type using pilot fluid. Since the pressure switch is connected to the load flow path and provided on the manifold separately from this laminated control valve, the laminated control valve and the pressure switch that are laminated on the manifold can be handled specially for repair and circuit. The change work can be easily performed. Further, in the structure of claim 2 of the present invention, the switching valve located at the uppermost stage of the laminated control valve selectively laminated on the upper surface of the manifold is provided in a pilot operated type using pilot fluid, and the laminated control is performed. Separately from the valve, the pressure switch is connected to the load flow path and provided in the manifold, and the electrical wiring of the pressure switch is electrically connected to the terminal block housed in the terminal box provided in the manifold. The switch can be handled exceptionally, and the length of the electric wiring of the pressure switch can be shortened, so that the work of repair and circuit change can be easily performed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 4, reference numeral 1 denotes a manifold, which has a supply passage 2 connected to a pressure source P and a low pressure passage 3 connected to a tank T on the low pressure side, which extend in the longitudinal direction and are formed inside. Along with two actuators 4A,
2B, one set of load flow paths 5A, 5
B and 6A, 6B are separated from each other in the longitudinal direction, and are formed by penetrating the inside in the direction orthogonal to the extending direction of the supply flow path 2 and the low-pressure flow path 3. The load flow passages 5A, 5B, 6A, 6B are provided by penetrating the inside of the manifold 1 and connecting the actuators 4A, 4B with one opening opening on one side face 1A in the longitudinal direction, and A pressure switch 7, which will be described in detail later, is attached to the other opening of the load passage 5A opened on the other side surface 1B so as to be detachably connected,
The other openings of the load flow paths 5B, 6A, 6B opened on the other side surface 1B are closed by plugging members 8A, 8B, 8C that are detachably screwed to the manifold 1. The plug member 8 is also provided in the other opening of the load flow paths 5B, 6A, 6B.
A, 8B, 8C can be removed and a pressure switch can be attached and detachably connected like the load flow path 5A.

Reference numerals 9A and 9B denote two mounting surfaces formed on the upper surface of the manifold 1. The mounting surface 9A has a flow path branching and communicating with the supply flow path 2, the low pressure flow path 3, and the load flow paths 5A and 5B. And the openings are formed, and the mounting surface 9B is standardized and formed with the flow paths branching and communicating with the supply flow path 2, the low-pressure flow path 3, and the load flow paths 6A and 6B. Reference numeral 10 denotes a laminated control valve selectively laminated on the mounting surface 9A of the manifold 1, and a passage 11 communicating with each passage 2, 3, 5A, 5B of the manifold 1.
A, 12A, 13A, 14A, 15A and pilot flow paths 16A, 17A through which a pilot fluid flows are provided in the main body 10
The upper and lower surfaces of A are standardized and provided with through openings, and have a meter-out diaphragm function. It should be noted that, in addition to the laminated control valve 10 having the meter-out throttle function, laminated control valves having various fluid control functions can be selectively arranged in layers according to the intended use. Reference numeral 18 denotes a pilot operated switching valve located at the uppermost stage of the laminated control valve 10 selectively laminated on the mounting surface 9A.
A, 12A, 13A, 14A, 15A, 16A, 17A
Flow paths 19A, 20A, 21A, 22A, 23 communicating with
A, 24A, 25A, and pilot channels 24A, 2A
The flow paths 19A, 20A, 21A, 22A, and 23A are pilot-operated by a pilot fluid flowing through 5A so as to be switchably controlled. In addition, on the mounting surface 9B of the manifold 1, each of the flow paths 2, 3, 6A of the manifold 1,
Flow paths 11B, 12B, 13B, 14B communicating with 6B,
15B and pilot flow passages 16B and 17B in the main body 26
A laminated control valve 26 having a metered-out throttle function, which is standardized on the upper and lower surfaces of A, is selectively laminated and arranged, and the respective uppermost flow passages 11B and 12B of the laminated control valve 26 are arranged.
Flow paths 19B, 20B, 21B, 22B, 23B, 24 communicating with B, 13B, 14B, 15B, 16B, 17B.
A pilot operated switching valve 27, which has B and 25B and is pilot-operated by the pilot fluid flowing through the pilot channels 24B and 25B to control switching between the channels 19B, 20B, 21B, 22B and 23B, is provided. There is. The laminated control valve 10 and the switching valve 18 are detachably fixed to the manifold 1 by the four bolt members 28, and the laminated control valve 26 and the switching valve 27 are detachable from the manifold 1 by the four bolt members 29. It is fixed freely.

Numerals 30A and 31A are two solenoid valves for controlling the flow direction of pilot fluid for pilot-operating the switching valve 18, and are provided by being mounted on both side surfaces orthogonal to the mounting surface 9A of the manifold 1 and facing each other. The solenoid valve 30A communicates with the pilot channel 16A of the laminated control valve 10 by energizing and de-energizing, and the pilot channel 32A included in the manifold 1 is provided.
Is provided so as to be switchably connected to the supply flow path 2 and the low pressure flow path 3, and the solenoid valve 31A is connected to the pilot flow path 17A by energization and de-energization and is connected to the pilot flow path 17A, and the pilot flow path 33A included in the manifold 1 is provided.
Is provided so as to be switchably connected to the supply flow path 2 and the low pressure flow path 3. Reference numerals 30B and 31B are two solenoid valves for controlling the flow direction of pilot fluid that pilot-operates the switching valve 27.
The solenoid valve 30B is adjacent to the solenoid valve 30A and is connected to the manifold 1
The pilot flow passage 32B provided in the manifold 1 by being connected to the pilot flow passage 16B of the laminated control valve 26 by being energized and de-energized is provided so as to be switchably connected to the supply flow passage 2 and the low pressure flow passage 3. . Further, the solenoid valve 31B is the solenoid valve 31
A pilot channel 33B attached to the manifold 1 adjacent to A and communicating with the pilot channel 17B by energization and de-energization and provided in the manifold 1 is provided so as to be switchably communicated with the supply channel 2 and the low-pressure channel 3. There is.

Reference numeral 34 designates a terminal box mounted on the manifold 1 and having a solenoid valve 30A, 30
A terminal block 35 for electrically connecting electrical wiring (not shown) from an external voltage source for B, 31A, and 31B is accommodated and provided, and the vertical width dimension of FIG. Both sides are provided so as to project from the manifold 1. The terminal block 35 has a plurality of sets of crimp terminals with screws 35A for attaching electric wiring from the outside, and terminals 35B which are electrically connected to the crimp terminals and project downward. 36 is a lid member that closes the upper opening of the terminal box 34.
It is attached to and detached from. Reference numeral 37 is an insertion hole formed in the terminal box 34, and is provided so as to insert an electric wiring from the outside electrically connected to the terminal block 35. Solenoid valve 30A,
The plurality of electric wires 38A of 30B are solenoid valves 30A, 30B.
The inside of the duct member 39A attached to the solenoid valve 31A, and the plurality of electric wirings 38B of the solenoid valves 31A and 31B are connected to the solenoid valve 31.
The duct members 39B attached to A and 31B are inserted into the duct members 39B and soldered to the terminals 35B of the terminal block 35 in the terminal box 34 so as to be electrically connected and electrically connected to the external electric wiring.

Pressure switch 7 connected to load channel 5A
Is a semiconductor type using a semiconductor strain gauge, and the pressure value set by the adjusting knob 7A is provided to be adjustable,
Pipe fitting member 40 screwed into the other opening of the load flow path 5A
It is attached to and detached from the other side surface 1B of the manifold 1. Reference numeral 41 is a connector member that is attached to the bottom plate of the terminal box 34 so as to project downward, and
Electrical wiring 38A, 3 from solenoid valve 30A, ... 31B of 5
A plurality of electric wires 42 are soldered and electrically connected to the remaining terminals 35B to which 8B is soldered. Reference numeral 43 is a multi-core cable of the pressure switch 7 having a plurality of electric wirings inside, and a connector member 41 is attached to the tip of the multi-core cable by turning operation.
Has a connecting portion 43A that is detachably screwed to the terminal member 35 and is screwed to the connector member 41 via the electric wiring 42.
It is electrically connected to. Then, the crimp terminal with the screw 35A for electrically connecting the plurality of terminals 35B to which the electric wiring 42 of the terminal block 35 is soldered is connected to the electric wiring (not shown) from the external voltage source for the pressure switch 7 and the pressure. An electric wiring (not shown) for the pressure switch 7 from a load such as an alarm that operates according to an electric signal output from the switch 7 is provided so as to be inserted through the insertion hole 37 of the terminal box 34 to be electrically connected. There is. When the pressure switch 7 is connected to the load flow path 5B, 6A or 6B other than the load flow path 5A, the pressure switch 7
It is possible to increase the number of connector members 41 according to the number of the terminals and mount them on the bottom plate of the terminal box 34.

Next, the operation of this structure will be described. Figure 1
In the state of FIG. 4, the pressure fluid is not being supplied from the pressure source P to the supply flow path 2, and the two actuators 4A and 4B
Has stopped. When the pressure fluid is supplied to the supply passage 2 from this state, the pressure fluid is supplied to the passages 11A, 19A, 22.
A, 14A, load channel 5A, actuator 4A
Fluid on the rod side of the actuator 4A is introduced into the load side of the load passage 5B, the flow passages 15A, 23A, 20A, 1
2A, discharged through the low-pressure flow path 3 to the tank T, and the actuator 4A is actuated by the speed control in the left direction of FIG. 4 by the meter-out throttling function and stopped at the left end. When the actuator 4A is actuated to the left and the pressure of the pressure fluid flowing through the load passage 5A reaches the pressure value set by the pressure switch 7, the pressure switch 7 is actuated to transmit an electric signal to the multicore cable 43, the connector member. 41 electrical wiring 42, terminal block 35
It is output to a load such as an external alarm through the crimp terminal formed by the terminal 35B and the screw 35A. When the pressure of the pressure fluid flowing through the load passage 5A becomes lower than the pressure value set by the pressure switch 7, the pressure switch 7 stops outputting an electric signal. Further, the pressure fluid in the supply channel 3 is
B, 19B, 22B, 14B and the load flow passage 6A are introduced to the head side of the actuator 4B, and the fluid on the rod side of the actuator 4B is the load flow passage 6B, the flow passages 15B, 2B.
3B, 20B, 12B flow through the low-pressure flow path 3 and are discharged to the tank T, and the actuator 4B is speed-controlled by the meter-out throttle function in the leftward direction in FIG. 4 and stops at the left end.

When the solenoid valve 31A is energized from the above-mentioned state where the actuator 4A is stopped at the left end, the solenoid valve 31
A is for switching and communicating the pilot flow path 33A with the supply flow path 2,
A part of the pressure fluid in the supply passage 2 flows as a pilot fluid in the pilot passages 33A, 17A, 25A, and the switching valve 1
8 is operated by a pilot, and the switching valve 18 is switched to the position on the right side of FIG.
The pressure fluid that has flowed through the flow paths 23A, 15A and the load flow path 5B.
Flow into the rod side of the actuator 4A, and the load channel 5A, the channel 14 from the head side of the actuator 4A.
The fluid flowing through A and 22A flows through the flow paths 21A and 13A and the low-pressure flow path 3 and is discharged to the tank T.
Operates in the rightward direction in FIG. 4 with the speed controlled by the meter-out throttle function, and stops at the right end shown in FIG. Then, the solenoid valve 31A is restored to the state of FIG. 4 in which the pilot passage 33A is switched and communicated with the low pressure passage 3 by de-energizing. When the actuator 4A is actuated to the left in FIG. 4 again, the pilot valve 32A is energized by energizing the solenoid valve 30A.
Is switched to the supply flow path 2 and the pilot fluid flows through the pilot flow paths 32A, 16A, 24A to pilot-operate the switch valve 18, the switch valve 18 is returned to the state of FIG. 4, and thereafter, the solenoid valve is operated. De-energize 30A to return to the state of FIG.

The actuator 4 stopped at the left end
To operate B to the right end in the state of FIG. 4, the solenoid valve 31
By energizing B, the pilot flow passage 33B is switched and communicated with the supply flow passage 2 so that the pilot fluid flows through the pilot flow passages 33B, 1
7B, 25B to pilot the switching valve 27,
The switching valve 27 is switched to the right side position in FIG. 4 for controlling the switching of the flow path 19B to the flow path 23B and the flow path 22B to the flow path 21B, and the actuator 4B is speed-controlled by the meter-out throttle function in the right direction of FIG. It operates and stops at the right end shown in FIG. Then, the solenoid valve 31B returns to the state of FIG. 4 by de-energizing. When the actuator 4B is actuated to the left again, the solenoid valve 30B is energized, whereby the switching valve 27 returns to the state of FIG. 4, and thereafter the solenoid valve 30B is de-energized and the solenoid valve 30B is deenergized. Return to the state of.

With this operation, the mounting surface 9 of the manifold 1 is
In addition to the laminated control valve 10 in which a pilot operated switching valve 18 is positioned at the uppermost stage and selectively laminated in A, a load flow path 5A in which a pressure switch 7 is opened to the other side surface 1B of the manifold 1 is provided. Pipe joint member 40 screwed into the other opening of the
Since the laminated control valve 10 and the pressure switch 7 can be handled exceptionally, and the laminated height of the valve can be suppressed, the work of repair and circuit change can be performed easily. be able to. Further, since the electric wiring provided in the multi-core cable 43 of the pressure switch 7 is electrically connected to the terminal block 35 housed in the terminal box 34, the length of the electric wiring can be shortened, and repair or circuit change can be performed. The work can be performed more easily. Furthermore, by reducing the length of the electrical wiring of the pressure switch,
It is possible to reduce the occurrence of disconnection and improve the reliability of the device. Furthermore, the actuator 4 is provided at one opening of the load flow path 5A opened at one side surface 1A of the manifold 1.
Since the pressure switch 7 is connected to A and the pressure switch 7 is connected to the other opening of the load flow path 5A opened on the other side surface 1B of the manifold 1, the actuator 4A and the pressure switch 7 are connected to the manifold 1. On the other hand, they can be connected to the load flow paths 5A from different directions, respectively, and the connection work can be easily performed without interfering with each other. Furthermore, since the terminal box 34 is provided with the connector member 41 to which the multi-core cable 43 of the pressure switch 7 is detachably attached, the electrical wiring of the pressure switch 7 is detached and attached due to replacement of the pressure switch 7 and inspection work. Work can be done easily.

FIG. 5 shows another embodiment of the present invention. The same parts as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described. The plurality of electric wires 44 of the pressure switch 7 are liquid-tightly inserted with a sealing member 45 made of an elastic material mounted on the bottom plate of the terminal box 34 and soldered to the terminals 35B of the terminal block 35 housed in the terminal box 34. It is electrically connected. Then, the same operational effects as those of the embodiment can be obtained, except for the operational effects of the connector member 41 described in the embodiment.

FIG. 6 shows still another embodiment of the present invention. The same parts as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described. The load flow paths 46A and 46B provided in the manifold 1 are one side surface 1 of the manifold 1.
A flange member 47 is provided by being opened on A, is detachably mounted on one side surface 1A of the manifold 1, and is connected to the opening of the load passage 46A.
6A has a branch flow path 48 for branch connection, the actuator 4A is connected to one of the branch flow paths 48, and the pressure switch 7 is detachably screwed to the flange member 47 and connected to the other of the branch flow paths 48. Connector member 41 for detachably screwing the multi-core cable 43 of the pressure switch 7
Is attached to the bottom plate of the terminal box 34 at a position facing the one of the embodiment through the manifold 1. Then, the load passage 5A described in the embodiment is connected to the manifold 1
It is possible to obtain the same operational effect as that of the embodiment except for the operational effect obtained by opening the one side surface 1A and the other side surface 1B.

[0017]

As described above, the present invention has a manifold in which a supply passage connected to a pressure source, a low pressure passage connected to a low pressure side, and a load passage connected to an actuator are formed. A switching valve located at the uppermost stage of the laminated control valve stacked on the upper surface is provided in a pilot-operated type using pilot fluid, and a pressure switch is connected to the load passage separately from the laminated control valve and installed in the manifold. Therefore, the laminated control valve and the pressure switch can be handled exceptionally, the laminated height of the valve can be suppressed, and the work of repair and circuit change can be easily performed. Also, by electrically connecting the electrical wiring of the pressure switch to the terminal block inside the terminal box provided on the manifold, the length of the electrical wiring of the pressure switch can be shortened, and repair and circuit modification work can be performed more easily. be able to. Furthermore, since the length of the electric wiring of the pressure switch can be shortened, the occurrence of disconnection can be reduced and the reliability of the device can be improved.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which (A) is a front view in which a part of a laminated fluid control device is shown as a cross section, and (B) is a part as seen from the arrow A of (A). FIG.

FIG. 2 is a diagram showing a part of the inside viewed from the arrow B of FIG. 1 (B).

FIG. 3 is a diagram viewed from an arrow C in FIG.

FIG. 4 is a circuit diagram of a laminated fluid control system showing an embodiment of the present invention.

FIG. 5 is a diagram showing another embodiment of the present invention.

FIG. 6 is a view showing still another embodiment of the present invention.

FIG. 7 is a diagram showing a conventional example.

[Explanation of symbols]

 1 Manifold 2 Supply Flow Path 3 Low Pressure Flow Path 4A, 4B Actuator 5A, 5B, 6A, 6B, 46A, 46B Load Flow Path 7 Pressure Switch 9A, 9B Mounting Surface 10, 26 Stacked Control Valve 18, 27 Switching Valve 30A, 30B, 31A, 31B solenoid valve 34 terminal box 35 terminal block

Claims (3)

[Claims] 1. A supply flow path connected to a pressure source and a low-pressure flow path connected to a low-pressure side are extended in the longitudinal direction, and a load flow path connected to an actuator is formed inside so as to open to a side surface in the longitudinal direction. This manifold has a manifold, and the pilot operated switching valve is located at the uppermost stage on the mounting surface formed by standardizing and opening the flow paths communicating with the supply flow path, low pressure flow path, and load flow path on the upper surface of the manifold. The control valve for pilot operation of the switching valve and the solenoid valve for controlling the flow direction of the pilot fluid and the terminal block for electrically connecting the external electrical wiring for this solenoid valve The terminal boxes housed in
A laminated fluid control device comprising a pressure switch which is detachably connected to a load flow path opening on a side surface of a manifold. 2. A pilot operated switching valve at the uppermost stage on the upper surface of a manifold in which a supply passage connected to a pressure source, a low pressure passage connected to a low pressure side and a load passage connected to an actuator are formed inside. Is located on the main body and the flow paths communicating with each flow path of the manifold are standardized on the upper and lower surfaces of the main body, and a laminated control valve with a through-opening is selectively stacked and arranged, and the switching valve is pilot operated. Each of the manifolds is provided with a terminal box that internally houses a solenoid valve for controlling the solenoid valve and a terminal block for electrically connecting electrical wiring from the outside for this solenoid valve, and a pressure switch is provided by connecting to the load flow path of the manifold. A laminated fluid control device, wherein the electric wiring of the pressure switch is electrically connected to a terminal block in a terminal box. 3. The laminated fluid control device according to claim 2, wherein an electric connection to the terminal block of the pressure switch is detachably provided by a connector member.