JPH0660643B2 - Actuator drive system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator drive system, and more particularly to a dual pipe fitting and a speed controller for a first actuator which is operated by fluid pressure. Alternatively, the present invention relates to an actuator drive system that can be selectively connected at a second predetermined position.

[Prior Art] Conventionally, a plurality of pipes are connected to a single pressure fluid supply source via a manifold, and actuators, such as a directional control valve for driving an air cylinder, are connected to the pipes respectively. The equipped system is widely used. In this case, the air cylinder has a first port for introducing a fluid for driving the air cylinder in a predetermined direction and a second port for introducing a fluid for driving the air cylinder in a direction opposite to the above. And are usually formed. Therefore, the pipe body for the first port and the pipe body for the second port are connected to the air cylinder, respectively.

In such a configuration, the air supplied from a pressure fluid supply source (not shown) connected to the manifold is supplied to each air cylinder with a predetermined flow path selected by each solenoid valve.

[Problems to be Solved] However, in the system configured as described above, for example, two ports are provided in two ports of one air cylinder.
Each of the two pipe joints is provided as a separate body. Therefore, two pipe bodies for supplying fluid from the manifold to the air cylinder are also provided as separate bodies. For this reason,
When arranging a plurality of air cylinders, the number of pipes for supplying air to the air cylinders is significantly increased, and the occupied area is also expanded all at once.

That is, the configuration of the system itself becomes so complicated,
The work of arranging the pipe body becomes extremely complicated, and it becomes difficult to effectively use the narrow space. Further, as described above, when the number of piping steps increases in proportion to the number of pipes, the risk of so-called erroneous piping, which makes a mistake in the connection between the ports, increases.

Therefore, a method of connecting a manifold to each air cylinder with a double pipe is disclosed. That is, two air passages are defined in the double pipe consisting of the inner pipe and the outer pipe, and by using this type of double pipe, one manifold is provided for two ports of the air cylinder from the manifold. A structure that can be fluidly connected with a double tube is obtained. The number of pipes, piping man-hours and occupied area are also reduced.

However, in the system, for example, when it is necessary to change the connection state of the manifold port and the air cylinder port depending on the design change or the like, the double pipe cannot handle it. Therefore, in some cases, the double pipe has to be replaced with another pipe body to be connected, and there is a case where another piping work or a change in the mounting position is required. This exposes the inconvenience of being extremely annoying.

The present invention has been made to overcome the above-mentioned inconveniences, and in an actuator operated by fluid pressure, a double pipe pipe joint and a speed controller are provided in the actuator at a first position and from this first position.
Of the pipe for supplying the fluid to the actuator while ensuring the ease of attachment of the pipe to which the fluid is supplied and the speed controller by being configured so as to be selectively attachable between the second position which is offset. Actuator that reduces the number as much as possible, greatly reduces the piping man-hours, facilitates piping work, avoids erroneous piping, and can easily respond to changes in design, mounting position, etc. It is intended to provide a drive system.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a system for supplying a fluid pressure to drive a plurality of actuators. A double pipe having two fluid passages defined by an inner pipe and an outer pipe for supplying and discharging a fluid, a first opening communicating with one fluid passage of the double pipe, and the other fluid A pipe joint for double pipe having a second opening communicating with the passage, a first hole joined to the pipe joint for double pipe and facing the first opening, and a second opening. A second hole part and a first hole part for controlling the flow rate of the fluid pressure supplied from the first hole part.
And a second controller for controlling the flow rate of the fluid pressure supplied from the second hole, and a fluid pressure controlled by the first controller of the speed controller. An actuator that has a first passage for introducing a fluid and a second passage for introducing a fluid pressure whose flow rate is controlled by the second controller, and operates by the fluid pressure introduced from the first passage and the second passage. The double pipe pipe joint is formed by opening the first opening and the second opening of the double pipe pipe joint larger than the first hole second hole of the speed controller, respectively. When inverted with respect to the speed controller, the first opening and the second opening of the pipe joint for double pipe communicate with the second hole and the first hole of the speed controller, respectively. To do.

Further, according to the present invention, a first opening and a second opening are provided on the fluid pressure deriving side of the first control unit of the speed controller, the first opening and the second opening being large openings with respect to the first passage and the second passage of the actuator, respectively. The first opening and the second opening are respectively connected to the second passage and the first passage of the actuator when the speed controller is inverted with respect to the actuator.

[Operation] In the actuator drive system according to the present invention, when connecting the double pipe joint to the speed controller,
The first opening and the second opening facing the first hole and the second hole of the speed controller are formed to be larger than the hole. Therefore, when trying to change the pipe position by reversing the pipe joint for double pipes about the axis thereof, for example, the first opening faces the second hole of the speed controller, while the second opening is exposed. Faces the first hole. In this way, the fluid pressure can be introduced into the speed controller without hindrance even if the pipe joint for double pipe is used in reverse.

[Embodiment] Next, the actuator drive system according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 40 indicates an actuator driving system according to the present invention, and the system 40 includes a solenoid valve manifold 42 and a plurality of air cylinders 44a, 44b, 44c.

An inlet port 46 and an outlet port 48 that communicate with a pressure fluid supply source (not shown) are formed on one end surface of the solenoid valve manifold 42. A first port 50a, a second port 50b and a third port 50c are defined on one side surface of the solenoid valve manifold 42, and the first port 50a is defined.
Double pipe connectors 52a to 52c are engaged with the a to third ports 50c, respectively. Further, electromagnetic switching valves 53a, 53b, 53c are attached to the upper surface of the electromagnetic valve manifold 42. These electromagnetic switching valves 53a to 53c are energized and deenergized to select passages of fluids flowing into the double pipe connectors 52a to 52c engaged with the first port 50a to the third port 50c, respectively. Become.

On the other hand, speed controllers 54a, 54b and 54c are integrally mounted on the air cylinders 44a, 44b and 44c for controlling the operating speeds of the air cylinders 44a to 44c, respectively.
The pipe joints 56a, 56b, 56c for double pipes are attached to the respective pipes. In this case, the pipe joint 56a for the double pipe is the first port defined by the solenoid valve manifold 42 through the double pipe 58.
It is in communication with 50a. Similarly, the pipe joints 56b and 56c for double pipes are also connected to the second port 50 through the double pipes 60 and 62, respectively.
b, communicating with the third port 50c.

Here, any one of the air cylinders 44a to 44c includes a cylinder body 64 as shown in FIG. 2, and a guide member 66 is fitted to one end of the cylinder body 64. However, this defines chamber 68. The guide member 66 has a hole 66a formed substantially in the center thereof. Further, a piston 70 is slidably fitted in the chamber 68, whereby the chamber 68 is divided into a small chamber 72a and a small chamber 72.
It is divided into b. A piston rod 74 projecting toward the small chamber 72b side extends from one end surface of the piston 70, and the tip end side of the piston rod 74 is the guide member 66.
It penetrates through a hole portion 66a formed in the cylinder body 64 and projects outward from one end surface of the cylinder body 64.

A passage 76a and a passage 76b having a bent shape are defined on one side of the cylinder body 64. In this case, the passage 76a
Is in communication with the small chamber 72a, while the passage 76b is in the small chamber 72a.
communicate with b.

Next, the speed controller 54a is fixed to the cylinder body 64. The speed controller 54
Reference character a is composed of a main body portion 78, and a first control portion 80a and a second control portion 80b arranged in the main body portion 78. In this case, the lower surface of the main body portion 78 is substantially defined with an opening 82a communicating with the passage 76a of the air cylinder 44a and an opening 82b communicating with the passage 76b.
a and 83b through the first control unit 80a and the second control unit 80b
(See FIG. 3). The opening 82
The a and 82b are formed sufficiently larger than the open ends of the passages 76a and 76b.

On the other hand, a cylinder body 64 that constitutes the air cylinder 44a.
A gasket 84 is engaged with the joint portion with and a hole portion 86a, 86b is formed in the upper surface of the main body portion 78.
In this case, these holes 86a, 86b are the same as those of the respective control units.
It is in communication with 80a and 80b.

The first control unit 80a and the second control unit 80b have substantially the same structure. Therefore, the details of the first control unit 80a will be described here, and the first control unit 80a will be described for the second control unit 80b.
Reference numeral indicating the same component as a is denoted by reference numeral b and its detailed description is omitted.

That is, as shown in FIG. 3, the first controller 80a includes a fitting member 88a fitted to the main body 78, and the fitting member 88a
Is locked to the main body 78 by a revolving projection 90a formed at one end thereof, and the fitting member 88a and the main body 78 are
Defines the room 89a. The fitting member 88a has a hole 92 extending in its axial direction and having a large diameter portion and a small diameter portion.
a is provided, and a screw groove 93 is formed at the end of the large diameter portion of the hole 92a.
a is engraved. Further, a plurality of passages 94a communicating with the small diameter portion of the hole 92a is formed near one end of the fitting member 88a, and a large size of the hole 92a is formed substantially in the center of the fitting member 88a. A plurality of passages 96a communicating with the diameter portion are formed. Further, a circumferential groove is provided between the passage 94a and the passage 96a.
98a is defined, and a packing member 100a having a substantially V-shaped cross section is engaged with the peripheral groove 98a, whereby the chamber 89a is divided into the small chamber 9a.
It is divided into 7a and small room 99a. In this case, the outer peripheral portion of the packing member 100a abuts on the inner peripheral wall surface of the main body portion 78, and the outer peripheral diameter can be reduced by the fluid pressure supplied from the small chamber 99a side.

The valve body 102a is fitted to the large diameter side of the hole 92a. In fact, a threaded portion 104a is formed in the intermediate portion of the valve body 102a, and this threaded portion 104a is screwed into a thread groove 93a formed in the large diameter portion of the hole 92a. One end side of the valve body 102a is slidably in contact with the large diameter portion side of the hole portion 92a, and the end portion thereof is tapered in diameter and adjoins the small diameter portion side of the hole portion 92a. Further, the other end of the valve body 102a is provided with the fitting member 88.
It projects outward from a, and a handle 106a is engaged with the end thereof. Therefore, by rotating the handle 106a, the valve body 102a is screwed to adjust the opening degree between the tapered one end portion of the valve body 102a and the small diameter portion of the hole portion 92a, and the main body portion 78 It is possible to control the flow rate of the fluid flowing from the side of the opening 82a formed to the side of the hole 86a.

The speed controller 54a can be inverted by about 180 ° and attached to the cylinder body 64 of the air cylinder 44a. In this case, the speed controller 54
The opening 82a of a is a passage formed in the cylinder body 64.
It will communicate with 76b, while the opening 82b will communicate with the passage 76a.

Next, above the speed controller 54a, a second
As shown in the figure, the pipe joint 56a for double pipe is fixed. In this case, the double pipe fitting 56a is basically a base member 110 fixed to the upper surface of the speed controller 54a.
And a body member 1 rotatably engaged with the base member 110.
Including 12 and. The base member 110 has a rectangular mounting portion 114 attached to the speed controller 54a and this mounting portion 1
The column body 116 bulges upward from the central portion of 14.
A first opening 118a and a second opening 118b that are sufficiently larger than the opening ends of the holes 86a and 86b are defined on the lower surface of the mounting member 114, and the respective opening 118 is formed.
A gasket 120 engages to surround a, 118b. The first opening 118a and the second opening 118b have the column body portion.
One end sides of the first passage 122a and the second passage 122b extending in the axial direction of the 116 communicate with each other. in this case,
The other end of the second passage 122b communicates with a recess 124 formed in the upper portion of the pillar body portion 116, while the first passage 122a is a circumferential groove formed in the outer peripheral portion of the pillar body portion 116. 126 to passage 128
To communicate via. Further, an annular protrusion 130 is formed on the outer peripheral portion of the pillar portion 116 between the peripheral groove 126 and the mounting portion 114, and is used as a locking protrusion.

On the other hand, the body member 112 has a substantially cylindrical shape with its upper part closed, and the first cylindrical body 1 into which the base member 110 is fitted.
32 and a second cylindrical body 134 formed integrally with the first cylindrical body 132 and extending in a direction orthogonal to the first cylindrical body 132. In this case, the hole 136 formed for fitting the pillar portion 116 into the first cylindrical body 132 is selected to be slightly longer than the length of the pillar portion 116. On the other hand, a first hole 138 having a large diameter is formed in the second cylindrical body 134 in the axial direction, and a second small diameter 138 is coaxially formed at the end of the first hole 138. The hole portion 140 is communicated. Further, the second
The hole 140 communicates with the circumferential groove 126 formed in the columnar portion 116 via the passage 142. The first hole portion 138 communicates with the upper portion of the hole portion 136 of the first cylindrical body 132 by a small-diameter passage 144 formed substantially parallel to the second hole portion 140.

Next, the seal member 146 is disposed on the second cylindrical body 134. The seal member 146 is provided with a flange portion 148 fitted to the second hole portion 140 on one end side thereof, and an O ring 149 is engaged with the flange portion 148 to hermetically close the first hole portion 138 and the passage 142. is doing. On the other hand, an annular locking portion 150 is formed on the other end side of the seal member 146. The seal member 1
A hole portion 152 is formed in the substantially central portion of the member 46 so as to extend in the axial direction.

Then, the holding member 154 is mounted inside the second cylindrical body 134. The holding member 154 has a large diameter portion 156 that fits in the first hole portion 138 and a small diameter portion 158 that fits in the second hole portion 140, and the large diameter portion 156 side is located approximately in the center thereof. A first hole portion 160 bored in the hole and a second hole portion 162 bored in the small diameter portion 158 are formed. In this case, the first hole portion 160 and the second hole portion 162 communicate with each other through the stepped portion and the tapered portion. Therefore, the inner peripheral surface portion that defines the first hole portion 160 is notched with a predetermined width in the axial direction to form a plurality of passages 161, and the passages 161 are formed at one end of the large diameter portion 156. It communicates with the passage 144 of the second cylindrical body 134 via the circumferential groove 163.

Further, a double pipe connection mechanism 164 is provided on the second cylindrical body 134. The double pipe connection mechanism 164 is the first of the second cylindrical body 134.
A guide member 166 that fits into the hole portion 138 is included, and the guide member 166 is engaged in the second cylindrical body 134 via an annular protrusion 168 formed on the outer peripheral portion thereof. One end of a collet 170 is fitted inside the guide member 166, and a chuck 172 is fitted into this collet 170. In this case, chuck 17
One end of 2 forms a locking portion 174 that is tapered in diameter, the locking portion 174 engages with the release bush 176, and is released from the inserted state under the pressing action of the release bush 176. It A packing member 178 is interposed between the collet 170 and the holding member 154 that form the double pipe connection mechanism 164.

The integral double pipe 58 is connected to the double pipe fitting 56a configured as described above. The double pipe 58 is an outer pipe 58a and an inner pipe 58b.
Consists of. Therefore, at the time of connection, the double pipe 58 is inserted into the release bush 176, the outer pipe 58a of the double pipe 58 is fitted into the first hole portion 160 of the holding member 154, and the outer pipe is The end of 58a is connected to the first hole 160
The outer tube 58a is positioned by bringing it into contact with the stepped portion. On the other hand, the tip of the seal member 146 is fitted to the inner pipe 58b,
The annular locking portion 150 and the inner pipe 58 formed on the seal member 146.
The inner peripheral surface of b is airtightly engaged. At this time, the outer tube 58a
The engaging portion 174 of the chuck 172 is inserted into the outer peripheral surface of the double tube 58 in which the outer tube 58a and the inner tube 58b are integrally formed by positioning. In this case, the outer tube 58a
The side passage 161, the circumferential groove 163, and the passages 144 and 122b communicate with the second opening 118b, and the inner pipe 58b side passage includes the hole portion 152, the passage 142,
It communicates with the first opening 118a via 122a.

In the drawings, reference numeral 180 indicates an O-ring, and the O-ring 180 is for preventing air from leaking from each portion where the O-ring is arranged. Moreover, the pipe joint for the double pipe
56a is inverted by about 180 ° and the speed controller 54
It can be attached to a. At this time, the first opening 118a is connected to the second controller 80 of the speed controller 54a.
The second opening 118b communicates with the first controller 80a. Similarly, the first opening 118a and the second opening 118a
The opening 118b can be directly connected to the passages 76a and 76b of the air cylinder 44a, and it is also possible to invert the connection by 180 ° and connect.

The air cylinder 44a, the speed controller 54a, and the double pipe fitting 56a according to the present embodiment are configured as described above, and the other air cylinders 44b and 44c, the speed controllers 54b and 54c, and the double pipe pipe. Joint 56b, 56
c is the air cylinder 44a and the speed controller, respectively
54a and the pipe joint 56a for double pipes have the same structure, and therefore detailed description thereof will be omitted.

The actuator drive system according to the present invention is basically constructed as described above. Next, its operation and effect will be described. In this case, the air cylinder 44a
1 to 44c have the same operation, one of the air cylinders 44a to 44c is one of the air cylinders 44a.
Of the air cylinders 44b and 44c will be omitted.

First, the operation of displacing the piston rod 74 of the air cylinder 44a in the direction of arrow A will be described. That is, compressed air is supplied to the introduction port 46 formed in the solenoid valve manifold 42 from a fluid supply source (not shown). Then, the electromagnetic switching valve 53a is energized to supply the supplied air to the inner pipe of the double pipe 58.
Select the passage to be introduced into 58b. As a result, the pipe joint 56a for double pipe is reached through the inside of the air pipe 58b. Next, the air flows through the hole 152 formed in the seal member 146, the passage 142, and the peripheral groove 126 in the double pipe pipe joint 56a.
A first passage 122a formed in the pillar portion 116 via the passage 128
Will be introduced in. The first passage 122a communicates with a first opening 118a, and the first opening 118a is a speed controller.
The first controller 80a communicates with a hole 86a formed in the main body 78 of 54a. Therefore, the air in the first passage 122a is introduced into the first controller 80a through the first opening 118a and the hole 86a (see FIG. 2). The air introduced from the hole portion 86a into the first control portion 80a is introduced into the passage 94a and the hole portion 92a from the small chamber 99a shown in FIG. 3 by the hole portion 92a and one end portion of the valve body 102a. It passes through the narrow gap defined and reaches the inside of the opening 82a through the passage 96a, the small chamber 97a and the hole 83a. At the same time, the hole 86a
The air introduced from the inside into the small chamber 99a reduces the diameter of the packing member 100a by the pressure, and the chamber 89a divided by the packing member 100a extends from the small chamber 99a to the small chamber 97a side, and from the hole 83a into the opening 82a. be introduced. The opening 82a
2 communicates with the passage 76a defined in the cylinder body 64 of the air cylinder 44a, so that the air in the opening 82a can pass through the passage 76a to the air cylinder 44a. Is introduced into the small chamber 72a defined inside. As a result, the piston 70 and the piston rod 74a of the air cylinder 44a are moved in the direction of arrow A in FIG.
It will be displaced in the direction.

At that time, the air remaining in the small chamber 72b is drawn out into the opening 82b formed in the main body 78 of the speed controller 54b through the passage 76b. The air led to the opening 82b reaches the inside of the small chamber 97b through the hole 83b. In this case, since one end side of the small chamber 97b is closed by the packing member 100, the air in the small chamber 97b flows from the passage 96b to the hole 92b.
Reach inside. At this time, since the opening of the hole 92b is adjusted by the valve body 102b, the flow rate of the air flowing into the hole 92b from the passage 96b is controlled. As a result, the speed at which the piston 70 and the piston rod 74 of the air cylinder 44a are displaced in the direction of arrow A is adjusted. Then, the air in the hole portion 92b passes through the passage 94b and the hole portion 86.
It is led out into the 2nd opening part 118b of the pipe joint 56a for double pipes via b. Further, the air in the second opening 118b flows into the passage 144 from the second passage 122b through the recess 124, and from the passage 144, the circumferential groove 163, the passage 161, and the outer pipe 58a of the double pipe 58.
It passes through the inside and is led out to the solenoid valve manifold 42 side.
In the solenoid valve manifold 42, the air is discharged to the outside from the outlet port 48 via the solenoid switching valve 53a.
As described above, the air cylinder 44a is driven, and the piston 70 and the piston rod 74 forming the air cylinder 44a are displaced in the arrow A direction.

Next, the piston 70 and the piston rod 74 are moved to the arrow B
The action of displacing in the direction will be described with reference to FIGS. 1 to 3.

In this case, as in the case of displacing the piston 70 in the direction of arrow A, air is introduced from the fluid supply source (not shown) into the introduction port 46 of the solenoid valve manifold 42. At that time, the solenoid directional control valve 53a is operated to inject the air into the double pipe 58.
Of the outer pipe 58a is selected. The outer tube 58a
The air introduced into the inside is the passage 161 of the pipe joint 56a for double pipe,
It is introduced into the hole 86b of the speed controller 54a from the circumferential groove 163, the passage 144, the passage 122b, and the second opening 118b. In the speed controller 54a, the air is introduced into the passage 76b defined by the cylinder body 64 of the air cylinder 44a, passing through the second controller 80b constituting the speed controller 54a, as described above. It Since the passage 76b communicates with the small chamber 72b, it finally reaches the small chamber 72b. Then, the piston 70 and the piston rod 74 of the air cylinder 44a are displaced in the arrow B direction. At that time, the air remaining in the small chamber 72a is discharged from the passage 76a to the first portion of the speed controller 54a.
It is discharged to the control unit 80a, controlled to a predetermined flow rate by the first control unit 80a, and then to the solenoid valve manifold 42 from the first passage 122a of the double pipe fitting 56a through the inner pipe 58b of the double pipe 58. It is discharged to the formed outlet port 48 side.

As described above, according to the present embodiment, in order to supply the driving air to the air cylinders 44a to 44c, the solenoid valve manifold 42 to which the fluid supply source is connected and the air cylinders 44a to 44c are connected. The tubular body is composed of double tubes 58, 60, 62. Therefore, the air cylinder 44a
Thus, the number of pipelines for supplying the air for driving 44 to 44c is remarkably reduced, the number of piping man-hours is reduced, and the piping work can be performed extremely easily.

Further, as described above, the speed controllers 54a through 54a
54c and the pipe joints 56a to 56c for double pipes are the air cylinders 44a to 44c and the speed controllers 54a to 54c.
Since it can be installed 180 ° inverted with respect to 54c, the outer pipe 58a of the double pipe 58 and the passage 76a, the inner pipe
The design can be changed so that the 58b and the passage 76b communicate with each other, and it is possible to easily meet the demand for changing the mounting position. Moreover, depending on the installation location of the air cylinders 44a to 44c, the grip 106 of the speed controllers 54a to 54c can be obtained.
Even if the usable range of a and 106b is limited and, as a result, the mounting direction of the speed controllers 54a to 54c is limited, the double pipe fitting 56a is inverted 180 ° with respect to the speed controllers 54a to 54c. Since it is possible, both the passages 76a and 76b of the air cylinders 44a to 44c can be connected to the outer pipe 58a and the inner pipe 58b of the double pipe 58.

Furthermore, the first and second openings 118 of the pipe joint 56a for double pipes
a, 118b and first and second speed controller 54a
The openings 82a and 82b are holes of the speed controller 54a.
Since it is formed to be sufficiently larger than the passages 76a and 76b of the air cylinders 86a and 86a, the positioning accuracy is not strictly required at the time of connection, and the manufacturing accuracy is not required at the manufacturing stage.

The first embodiment of the actuator drive system according to the present invention is configured as described above. Next, the second embodiment will be described.

In this case, in the second embodiment, the same reference numerals as those in the first embodiment indicate the same components, and detailed description thereof will be omitted.

In this embodiment, as shown in FIG. 4, double pipe joints 56a to 56c are attached to the air cylinders 44a to 44c used in the first embodiment via speed controllers 54a to 54c. This is a substitute for the pipe joint 200 for other double pipes.

Therefore, as shown in FIG. 5, the double pipe fitting 200 according to the present embodiment substantially includes the speed controller 54a.
54 to 54c, a mounting portion 202, and a cylindrical portion 204 that bulges upward from a substantially central portion of the mounting portion 202. The mounting portion 202 has a first opening at a lower surface thereof. Part 206 Second
And an opening 208 is formed. Further, the lower surface of the mounting portion 202 is arranged so as to surround the speed controller 54a to 54c so as to keep the first opening 206 and the second opening 208 airtight when contacting the speed controllers 54a to 54c. The gasket 210 is engaged.

On the other hand, the cylindrical portion 204 includes a first hole portion 212 having a relatively large diameter and a second hole portion 214 having a relatively small diameter that communicates with the first hole portion 212. The first hole portion 212 communicates with the second opening portion 208 via a small-diameter passage 216 provided in parallel with the second hole portion 214, and the small-diameter hole portion 214 forms a curved passage 218. It is communicated with the first opening 206 via.

The inside of the cylindrical portion 204 is configured to be substantially the same as the inside of the second cylindrical body 134 of the pipe joint 56a for double pipe used in the first embodiment.

The pipe joint 200 for double pipes according to the present embodiment is configured as described above, and even when the pipe joint 200 for double pipes is used, the same effects as those of the first embodiment can be obtained. It is possible to obtain.

In the first and second embodiments, the speed controllers 54a are provided in the air cylinders 44a to 44c.
The pipe joints 56a to 56c for double pipes or the pipe joint 200 for double pipes are mounted via the to cylinders 54 to 54c, but the speed controllers 54a to 54c are removed and the air cylinder is removed.
It is also possible to directly attach the pipe joints 56a to 56c for double pipes or the pipe joint 200 for double pipes to 44a to 44c. In this case, the openings 118a, 11 formed in the mounting portion 114 of the double pipe pipe joints 56a to 56c, 200 or the mounting portion 202.
8b and the openings 206 and 208 are in direct communication with the passages 76a and 76b formed in the air cylinders 44a to 44c, respectively. Furthermore, it goes without saying that it is possible to invert the pipe joints 56a to 56c, 200 for double pipes by approximately 180 ° and replace them with the pipe lines corresponding to the passages 76a, 76b of the air cylinders 44a to 44c.

[Advantages of the Invention] As described above, the actuator drive system of the present invention is configured such that the speed controller, the double pipe pipe joint, and the like can be integrally connected to the actuator operated by fluid pressure, and A double pipe can be used as a conduit for supplying fluid to the actuator. For this reason, the number of pipelines for supplying the fluid for driving the actuator is reduced as much as possible to reduce the number of piping man-hours, which facilitates the piping work of the pipelines and prevents erroneous piping. The advantage is that it can be prevented.

Further, by selectively attaching the speed controller and the double pipe pipe joint integrally attached to the actuator to the actuator at the first position or the second position, the inner pipe and the outer pipe of the double pipe can be obtained. Can be selectively connected to either the first passage or the second passage of the actuator, and it is possible to easily respond to changes in the mounting position, changes in design, etc., and as a result, the versatility of the actuator drive system is further improved. The effect that can be obtained is also obtained. Moreover, even if the mounting direction of the speed controller is limited by the operability of the handle depending on the installation location of the actuator, the double pipe fitting can be mounted to the speed controller at the first position or the second position. Thus, any of the tubes that make up the double tube can be selectively connected to the passage of the actuator.

Furthermore, since the first and second recesses of the pipe joint for double pipe and the speed controller are formed sufficiently larger than the first and second passages of the actuator and the speed controller, positioning accuracy is not required at the time of connection, In addition, the manufacturing precision in the manufacturing stage is unnecessary.

[Brief description of drawings]

FIG. 1 is a perspective view of an actuator drive system according to the present invention, FIG. 2 is a cross-sectional explanatory view showing an essential part of the actuator drive system according to the present invention, and FIG. 3 is a speed incorporated into the actuator drive system according to the present invention. FIG. 4 is a cross-sectional explanatory view of the controller, FIG. 4 is a partially omitted perspective view showing an essential part of another embodiment of the actuator drive system according to the present invention, and FIG. 5 is a dual structure incorporated in the actuator drive system shown in FIG. It is a partially omitted cross-section explanatory drawing of the pipe joint for pipes. 40: Actuator drive system, 42: Solenoid valve manifold 44a to 44c ... Air cylinder, 54a to 54c ... Speed controller 56a to 56c ... Pipe joint for double pipe, 58, 60, 62 ... Double pipe 80a , 80b ... control unit, 110 ... base member 112 ... body member, 154 ... holding member 164 ... double pipe connection mechanism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography SHO 61-30791 (JP, U) ACT 61-96078 (JP, U) ACT 59-40569 (JP, Y2)

Claims (2)

[Claims] 1. A system for supplying a fluid pressure to drive a plurality of actuators, wherein two fluids are provided by an inner pipe and an outer pipe to supply and discharge the fluids from the fluid pressure supply source to the respective actuators. A pipe joint for a double pipe having a double pipe defining a passage, a first opening communicating with one fluid passage of the double pipe, and a second opening communicating with the other fluid passage of the other double pipe. A first hole portion that is joined to the pipe joint for double pipe and faces the first opening portion, a second hole portion that faces the second opening portion, and a fluid supplied from the first hole portion First to control the flow rate of pressure
And a second controller that controls the flow rate of the fluid pressure supplied from the second hole, and a fluid whose flow rate is controlled by the first controller of the speed controller. It has a first passage for introducing a pressure and a second passage for introducing a fluid pressure whose flow rate is controlled by the second controller, and operates by the fluid pressure introduced from the first passage and the second passage. An actuator, and the first opening and the second opening of the pipe joint for double pipe are respectively connected to the first hole and the second opening of the speed controller.
When the pipe joint for double pipe is inverted with respect to the speed controller by opening larger than the hole,
An actuator driving system characterized in that the first opening and the second opening of the pipe joint for double pipe communicate with the second hole and the first hole of the speed controller, respectively. 2. The system according to claim 1, wherein the first opening is formed on the fluid pressure deriving side of the first control portion of the speed controller, the opening being large with respect to the first passage and the second passage of the actuator, respectively. And a second opening, and the first opening and the second opening respectively communicate with the second passage and the first passage of the actuator when the speed controller is inverted with respect to the actuator. An actuator drive system characterized by: