JP2000145724A - Cylinder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate necessary for connecting work of a flow control valve to widely take up space for a mounted device of jig or the like can be wide taken. SOLUTION: In this cylinder device having a cylinder body extending/ contracting a piston rod and a flange 11 provided in the cylinder body to be formed with a flow passage in a suction side and a flow passage in a discharge side of a fluid each successively in the cylinder body and the flange 11, an opening/closing member 21, 31 each opening/closing a flow passage in suction/ discharge side of the flange 11 and an adjustment throttle 25 each adjusting an opening/closing condition of these opening/closing members 21, 31 are arranged in the flange 11. The opening/closing member 21, 31 is constituted of check valves 22, 32 formed with a hole for a fluid to flow through, a spring and a steel ball.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder device used by being attached to a device such as a jig for fixing a workpiece.

[0002]

2. Description of the Related Art Conventionally, as an actuator such as a hydraulic cylinder or a pneumatic cylinder, for example, a cylinder device attached to a jig for fixing a workpiece is known.
This cylinder device is used by mounting a predetermined number of devices such as jigs arranged on a production line of an automobile or the like, and has a flange for attaching to the device such as the jigs. Such a cylinder device includes one in which the flange is provided on the head side, one in which the flange is provided on the piston rod side, and the like.

A cylinder device 101 shown in FIG. 9 is a hydraulic cylinder device provided with the above-mentioned flange 105, which expands and contracts a piston rod 102 with a fluid (oil) and drives a clamper provided above the above-mentioned flange 105. By fixing the workpiece, the cylinder body 103 on which the piston rod 102 expands and contracts and the flange 105 are formed with a fluid suction-side flow path and a fluid-side discharge side flow path, respectively. In such a cylinder device 101, flow control valves 104A and 104B for externally adjusting the flow rate of the fluid are provided, and a pressure control valve and a direction control valve are also provided.

The flow control valves 104A and 104B are also called speed controllers, and generally control the flow rate of a fluid in a flow path on the suction side and a flow path on the discharge side, respectively. That is, on the fluid suction side (meter-in side), the flow rate of the fluid flowing into the cylinder body 103 is adjusted, and on the fluid discharge side (meter-out side), the flow rate of the fluid flowing out of the cylinder body 103 is adjusted. Whether to control the meter-in side or the meter-out side is determined by the type and location of a device such as a jig on which the cylinder device 101 is provided, the location of the device, and the method of use. In recent years, these external flow control valves 104A, 104B
A high-precision and expensive device having a so-called bypass circuit has been developed (see a circuit diagram indicated by a JIS symbol in FIG. 9).

[0005]

However, the above-mentioned conventional external flow control valves 104A and 104B must be worked to connect the flow control valves 104A and 104B to the flow paths on the suction side and the discharge side of the flange 105. In addition, there has been a problem that not only the connection work of pipes and the like in consideration of safety is complicated, but also members and joints for fixing the flow control valves 104A and 104B are required. In particular, the cylinder device 1
In the case where 01 is replaced with another device such as a jig and attached, there is a problem that the complicated connection work has to be redone each time. In addition, since the conventional flow rate control valves 104A and 104B are externally mounted, a space for a device such as a jig is taken up, and a size of a work product is limited. There was a problem that the size was increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cylinder device which does not require connection work of a flow control valve, and can provide a large space for a device such as a mounted jig. Another object of the present invention is to provide an inexpensive cylinder device that can safely and reliably control the flow rate of a fluid while having a simple configuration, and that is easy to assemble.

[0007]

According to a first aspect of the present invention, there is provided a cylinder device including a cylinder body in which a piston rod expands and contracts, and a flange provided on the cylinder body. In a cylinder device in which a fluid flow path is continuously formed in a cylinder body and a flange, an opening / closing member for opening and closing the flow path of the flange and an adjustment throttle for adjusting the opening / closing state of the opening / closing member are provided on the flange. It is characterized by being provided.

According to the first aspect of the present invention, the opening / closing state of the opening / closing member is adjusted by the adjusting throttle with respect to the flow path of the flange, so that the flow rate of the fluid flowing into the cylinder body (or the fluid flowing out) is reduced. Can be adjusted. That is, the opening / closing member and the adjusting throttle can be used as a control on the meter-in side (suction side) for adjusting the flow rate of the fluid flowing into the cylinder body and as a control on the meter-out side (discharge side) for adjusting the flow rate of the fluid flowing out. It is.

According to a second aspect of the present invention, there is provided a cylinder device comprising:
In order to solve the above problem, a cylinder body in which a piston rod expands and contracts, and a flange provided on the cylinder body are provided, and the cylinder body and the flange have a fluid suction-side flow path and a discharge-side flow path, respectively. In the continuously formed cylinder device, an opening / closing member for opening and closing the flow paths on the suction side and the discharge side of the flange, and an adjustment throttle for adjusting the opening / closing state of these opening / closing members, respectively, are arranged on the flange. It is characterized by having.

According to the second aspect of the present invention, the open / close state of the opening / closing member is adjusted by the adjusting throttle with respect to the suction-side and discharge-side flow paths of the flange.
The flow rate of the fluid flowing into the cylinder body can be adjusted, and the flow rate of the fluid flowing out of the cylinder body can be adjusted. That is, not only the meter-in side but also the meter-out side can be controlled with only one cylinder device.

According to a third aspect of the present invention, there is provided a cylinder device comprising:
On the premise of the invention according to claim 1 or 2, the adjusting throttle is configured to be a screw type that is turned by a dedicated tool, and is provided for the first disposition formed continuously in the flow path of the flange. Characterized in that they are arranged in the holes of

According to the third aspect of the present invention, since the adjusting throttle is of a screw type, when the adjusting throttle is turned from the outside with a special tool, the opening / closing state of the opening / closing member with respect to the flow path is controlled. Can be adjusted. Further, the adjustment throttle can be easily attached to the first arrangement hole from the outside.

According to a fourth aspect of the present invention, there is provided a cylinder device comprising:
On the premise of the invention according to claim 2, the opening / closing member includes a check valve having a hole through which a fluid passes, a spring, and a steel ball. In the flow path on the suction side of the flange, the check valve is provided with a spring. The steel ball opens and closes the flow path of the flange, and in the flow path on the discharge side of the flange, a spring is provided via a steel ball to the check valve, and the steel ball is A hole through which the fluid of the check valve passes is opened and closed.

According to the fourth aspect of the present invention, the open / close member on the meter-in side and the open / close member on the meter-out side are composed of the same check valve, spring and steel ball, and can open and close the flow passage of the flange. it can. That is, although the flow direction of the fluid is opposite between the flow path on the suction side and the flow path on the discharge side, an opening / closing member including the same check valve, spring and steel ball can be used. Then, the flow rate of the fluid can be adjusted between the meter-in side and the meter-out side by adjusting the pressing state of the steel balls with the adjusting throttle.

According to a fifth aspect of the present invention, there is provided a cylinder device comprising:
On the premise of the invention according to claim 4, a second arrangement hole is continuously formed in each of the suction-side and discharge-side flow paths of the flange, and the second arrangement hole is formed through the second arrangement hole. The opening and closing member is disposed in the suction side and the discharge side flow paths from the same direction.

According to the fifth aspect of the present invention, the opening / closing member composed of the check valve, the spring and the steel ball is connected to the flow passage on the suction side and the discharge side of the flange in the second arrangement. When the meter-in side and the meter-out side are mounted from the installation hole, the fluid can be easily mounted from the same direction even if the directions of fluid flow are opposite.

According to a sixth aspect of the present invention, there is provided a cylinder device comprising:
On the premise of the invention according to claim 4 or claim 5, a third arrangement hole continuous with the flow path of the flange is formed, and the check valve is moved in the third arrangement hole. A regulating member for regulating the pressure is provided.

According to the sixth aspect of the invention, since the regulating member is provided, the movement of the check valve is regulated. Further, the regulating member can be easily attached to the third disposing hole from the outside.

According to a seventh aspect of the present invention, there is provided a cylinder device comprising:
On the premise of the invention according to claim 4 or 5, a safety plate for preventing the adjustment throttle and the regulating member from jumping out of the flange is attached to the flange, and a dedicated plate for turning the adjustment throttle is mounted on the safety plate. Characterized in that a hole through which the tool is passed is formed.

According to the seventh aspect of the present invention, since the safety plate is attached, it is possible to prevent the adjusting throttle and the regulating member from jumping outside due to the pressure of the fluid. Also, the adjustment throttle can be adjusted by passing a dedicated tool from the outside through the hole of the safety plate.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, the cylinder device 1 of the present embodiment comprises a cylinder body 3 on which a piston rod 2 extends and a flange 11 provided on the cylinder body 3. Of the cylinder device 1. This cylinder device 1 has a predetermined number of jigs and the like arranged on a production line of an automobile or the like.
(A head type), and the clamper 5 is driven by expansion and contraction of the piston rod 2 to fix a work product (for example, an oil plate of an automobile).
This is a so-called clamp cylinder 1.

As shown in FIGS. 2 and 3, the cylinder body 3 has a cylindrical internal space 4 with a closed bottom, and the flange 11 is mounted on the upper side. On the outer peripheral wall of the cylinder body 3, there are formed a flow path 3a on the suction side for sucking fluid (oil) and a flow path 3b on the discharge side for discharging oil. That is, a hole for taking oil into the internal space 4 is formed on the bottom side of the cylinder body 3, and a hole for taking out oil is formed above the internal space 4,
The oil discharged from a pump (not shown) is sucked through the suction port at the cylindrical end, introduced into the cylindrical internal space 4, and then formed near the suction port. It is designed to be discharged from the exit. At the opening end of the cylinder body 3, four holes 3c for bolts for fixing the flange 11 with bolts are formed at equal intervals.

The flange 11 has a rectangular shape having a predetermined thickness, and has a first bolt hole 11a for fixing to a device such as a jig at four corners of the rectangular shape. Between the hole 11a and the first bolt hole 11a, four second bolt holes 11b for fixing the flange 11 to the cylinder body 3 are formed. In the center of the flange 11, a hole 11c for guiding the piston rod 2 is formed, so that the ston rod 2 housed in the cylindrical internal space 4 expands and contracts. On the other hand, on the back side of the flange 11,
An arc-shaped fitting portion provided with a seal member (O-ring) R is provided on the outer periphery fitted to the opening of the cylinder body 3 (see FIG. 4A). Further, the flange 1
A pedestal portion 12 that bulges upward is formed on the front side of the fixing member 1, and a fixing portion 1 that fixes the clamper 5 via a pair of link plates 6 is formed on the rear side of the flange 11.
3 are provided. The fixing portion 13 and the pair of link plates 6 are connected to each other, and the pair of link plates 6 and the clamper 5 are connected by connecting pins 8 and a fixing ring 9.

FIGS. 3 and 4 show the flange 11.
(B) As shown in (c), the flow paths 13 and 14 communicating with the flow paths 3a and 3b of the cylinder body 3 are formed in a parallel state (see the arrow direction in the figure). The flow paths 13 and 14 of the flange are provided at the tip end side of the flange 11.
The flange 11 is formed in a substantially inverted U-shape that enters and exits from the rear side, passes through a straight portion inside the flange 11, and enters and exits from the rear side. That is, a suction port and a discharge port which are continuous with the suction port and the discharge port of the cylinder body 3 are formed on the rear side of the flange 11 so as to communicate with the flow paths 3a and 3b of the cylinder body 3 respectively. Has become. A groove M in which a seal member R is provided is formed at each of the suction port and the discharge port of the flange 11, so that connection for the pipes H1 and H2 can be performed (see FIG. 1). Check valves 22 and 32 for opening and closing the flow paths 13 and 14 and springs 23 and
Opening / closing members 21 and 31 constituted by 33 and steel balls (balls) 24 and 34 and an adjustment throttle 25 for adjusting the open / close state of these opening / closing members 21 and 31 are provided.

Channels 13 and 14 inside the flange 11
As shown in FIGS. 4 (b) and 4 (c), the first flow path (diameter 8 mm) 13a, 14a having a large diameter and the second flow path (diameter 3mm) 13b having a smaller diameter are formed as shown in FIGS. , 14b
Are respectively formed. A groove 13c for fixing one end of the spring 33 is formed in the first flow path 13a on the discharge side (meter-out side).

Above the first flow path, a first arranging hole 15 and a third arranging hole 17 are formed so as to penetrate above the flange 11 respectively. The first arranging hole 15 is for screwing the adjustment throttle 25 into a screw type, and has a screw formed therein. on the other hand,
The third arranging hole 17 is for mounting a regulating member 27 to be described later, and has a screw formed therein. The first disposing hole 15 and the third disposing hole 17 are formed in such a manner that two holes are provided before and after the pedestal portion 12 of the flange 11, respectively.

A second installation hole 16 is formed on the front side of the flange 11 so as to communicate with the flow paths 13 and 14 of the straight portion inside the flange 11. This second
The opening 16 for mounting the opening / closing member 21 is connected to the inside flow path 13.14 linearly from the front end of the flange 11 and is arranged in two parallel lines. Is formed. Therefore, the opening / closing member 2 on the meter-in side
1 and the opening / closing member 31 on the meter-out side also have the flange 11
Can be mounted from the same direction on the front side.

Next, as shown in FIGS. 5 to 7, the opening / closing members 21 and 31 are composed of check valves 22 and 32, springs 23 and 33 and steel balls 24 and 34.
The steel balls 24 and 34 have a diameter of 6 mm.
Each of the springs 23 and 33 has a length of about 15 m in a telescopic state.
m, and the steel balls 24 and 34 having the above-mentioned size are arranged at both ends. Check valve 22, 3
2 is used for disposing the springs 23 and 33 and the steel balls 24 and 34 with respect to the flow paths 13 and 14 of the flange, and has the same diameter as the first flow paths 13a and 14a. It has a substantially cylindrical shape with a diameter of 8 mm. The check valves 22 and 32 have holes 22 through which fluid (oil) passes.
a, 32a are formed, and grooves 22b, 32b for attaching the sealing member R to the outside are provided. The holes 22a and 32a through which the fluid passes have a diameter of 3 mm and are formed so as to have the same diameter as the diameters of the second flow paths 13b and 14b. It is formed in a substantially T-shape. One of the left and right holes of the outer peripheral wall is used as positioning holes 22c and 32c whose movement is regulated by the regulating member 27. Therefore, the oil (fluid) passes through the inside of the check valves 22 and 32 in an L-shape. Here, the holes 22a and 32a through which the fluid of the check valves 22 and 32 pass are provided.
May be formed in an L-shape, and positioning holes 22c and 32c may be separately formed at predetermined positions on the cylindrical outer peripheral wall.

The opening and closing members 21 and 31 having such a configuration are
As shown in FIGS. 6 and 7, in the flow path 13 on the suction side (meter-in side), a steel ball 24 is provided on the check valve 22 via a spring 23, while the flow path 13 on the discharge side (meter-out side) is provided. In 14, a check valve 32 is provided with a spring 33 via a steel ball 34. A groove 22d to which the spring 23 is fixed is formed in the opening of the hole 22a through which the fluid of the meter-in side check valve 22 passes. Also, one outer circumferential groove 22e and 32e are formed on the outer circumference of the meter-in side check valve 22 and two outer circumferential grooves 22e and 32e are formed on the outer circumference of the meter-out side check valve 32. The outer peripheral grooves 22e and 32e are provided with the seal members R, respectively, and serve to prevent leakage of fluid (oil). Here, the seal member R is connected to the check valve 22 on the meter-in side.
In the meter-out side, one piece is formed, and two pieces are formed in the meter-out side because the fluid may leak to the outside from the outer periphery of the check valve 32 as well as the hole 23a through which the fluid of the check valve 32 passes. Since the flow direction of the fluid on the meter-in side is opposite to that on the meter-out side, the fluid passes through the hole 22a through which the fluid of the check valve 22 passes, and flows from the outer periphery. There is no fear of leakage (in the direction of the arrow in FIG. 6).

The adjusting throttle 25 adjusts the open / close state of the open / close members 21 and 31, respectively, and is configured as a screw type that is turned with a dedicated tool. That is, the adjusting throttle 25 has a head formed as a screw head 25a having a minus groove for turning a dedicated tool such as a driver, and a groove 25b in which the seal member R is disposed and a screw formed on the outer periphery. The steel balls 24 and 34 are pressed by the tip 25c. This adjustment throttle 25 is connected to the flow path 13 on the suction side of the flange 11 and the flow path 1 on the discharge side.
4, the same configuration as described above is used.

Next, a third arrangement hole 1 of the flange is provided.
7 is provided with the regulating member 27. The restricting member 27 restricts the movement of the check valves 22 and 32. The restricting member 27 has a first restricting member 27a having a tip portion 27f formed in a sharp spire shape, and a urethane rubber member 27b.
And a second regulating member 27c having a tapered outer periphery
It is composed of Then, the first regulating member 2
A screw is formed on the outer periphery of 7a and the second regulating member 27c. A hexagonal groove 27d into which a hexagon wrench is fitted is formed in the head of the second regulating member 27c, and a hexagonal groove 27e into which a driver is fitted is formed in the head of the first regulating member. . Therefore, the rubber member 27b is
The first regulating member 27a is compressed between the first regulating member 27a and the second regulating member 27c to act as a cushion to prevent the first regulating member 27a from loosening, and to be disposed in the third disposing hole 17. The tip 27f of the first regulating member 27c is positioned at the position of the positioning hole 2 of the check valves 22 and 23.
2c and 32c are fixed. As the regulating member 27, the same structure as described above is used in the flow path 13 on the suction side and the flow path 14 on the discharge side of the flange 11.

Further, a safety plate 30 is mounted above the pedestal portion 12 of the flange 11. As shown in FIG. 8, the safety plate 30 prevents the adjustment throttle 25 and the regulating member 27 from jumping out, and also controls the meter-in side and the meter-out side. It is a plate-shaped naming plate that displays specifications and the like, and also displays a company name and the like. A hole 30a for a tool through which a dedicated tool is inserted is formed at a position of the safety plate 25 corresponding to the adjustment throttle 25, and the base 1
2 is formed with a hole 30b. The hole 30a for the tool is provided in the head 25 of the adjustment throttle 25.
The hole 30a is slightly smaller than the diameter of a. Therefore,
The tool hole 30a allows a special tool such as a screwdriver to pass therethrough.
The a contacts the bottom of the safety plate 30 and does not protrude outside. Further, on the front surface side of the safety plate 30, the above-mentioned respective adjustment throttles 25 are provided.
The rotation direction is indicated by an arrow so that the operator does not make an error in controlling the flow rate.

Therefore, when assembling the cylinder device 1 of the present embodiment having the above configuration, first, the opening / closing members 21,
31 is mounted from the same direction on the front side of the flange 11.
That is, as shown in FIGS.
The steel ball 24 and the spring 2
3. The check valve 22 having the seal member R disposed on the outer periphery is mounted in this order. On the other hand, in the discharge side flow path 14, the spring 3
3, the steel ball 34, and the check valve 32 in which two seal members R are arranged on the outer periphery are mounted in this order. The check valve 22,
Reference numeral 32 denotes a dedicated tool which is mounted in a fitted state, but it is sufficient if both are mounted in the same order in the same direction.
When mounted in this manner, the steel ball 2
4 closes the second flow path 13b (FIG. 6), while on the meter-out side, the steel ball 34 is disposed at a position to close the hole 32a through which the fluid of the check valve 32 passes (see FIG. 6). (FIG. 7).

Next, a regulating member 27 is provided in the third mounting hole 17 of the flange 11. That is, the first regulating member 27a, the rubber member 27b, and the second regulating member 27
Using a screwdriver or a spanner in the order of c, the regulating member 2
7 is arranged. Then, the positioning holes 22c and 32c of the check valves 22 and 32 are fixed by the tip 27f of the first regulating member 27a. Thereby, the check valves 22 and 32 can be reliably arranged with respect to the first flow paths 13a and 14a, and the check valves 22 and 32 can be arranged.
32 can also be prevented from moving in the rotation direction. Next, the adjustment throttle 2 is inserted into the first arrangement hole 15.
5 is provided. That is, the screw-type adjustment throttle 25 is screwed into the inner periphery of the first disposing hole 15.
Screw. As described above, in the cylinder device 1 according to the present embodiment, the opening / closing members 21 and 31, the regulating member 27 and the adjustment throttle 25 are provided outside the first to third arrangement holes 15, 16 and 17. By assembling them from each other, it is possible to easily assemble them. Finally, the safety plate 30 is attached to the base 12 of the flange 11. In addition, such a cylinder device 1
Is assembled as shown in FIG.
When connection for H1 and H2 is performed, the cylinder device 1 shown in FIG. 1 is completed.

Next, a case where the clamper 5 is actually driven using the cylinder device 1 of the present embodiment will be described. The cylinder device 1 assembled as described above is provided with the first bolt holes 11a at the four corners of the flange 11.
Is attached to various devices such as jigs via bolts.

As a premise, the manner of controlling the flow rate of the fluid in the cylinder device 1 of the present embodiment is indicated by arrows on the safety plate 30 as shown in FIG. Operate according to the display. First, generally, in the case of a table feed of a grinding machine or an oil motor for a milling machine, the meter-in side is controlled. In the case of such an apparatus, as shown in FIG. 1, when the screw head 25a of the adjustment throttle 25 is turned from a tool hole 30a of the safety plate 30 with a dedicated tool such as a screwdriver, the opening / closing member of the adjustment throttle 25 is opened. The flow rate of the fluid (oil) discharged from the pump (not shown) can be adjusted by adjusting the pressed state of the pumps 21 and 31. That is, when the suction side steel ball 24 is pressed by the adjusting throttle 25, the suction side flow path 13 (the second flow path 13b) of the flange 11 is opened, so that the flow path of the cylinder body 3 is opened. The flow rate to 3a is increased, and the piston rod 2 is pushed out quickly.

On the other hand, the meter-out side control is generally performed in a machine tool such as a drilling machine or a press machine in which the load fluctuates greatly. In such a case, the screw state 25a of the adjusting throttle 25 is turned from the tool hole 30a of the safety plate 30 with a dedicated tool such as a screwdriver to adjust the pressing state of the adjusting throttle 25 against the opening / closing members 21, 31. . That is, the pressure is adjusted by the adjusting throttle 25 in the flow path 14 on the discharge side flowing out of the cylinder main body 3, so that a back pressure is applied to the cylinder main body 3, and the cylinder main body 3 is suitable for use in places where the load fluctuates greatly. .

Here, the cylinder device 1 of the present embodiment
Is different from the above-mentioned high-precision and expensive one that constitutes a so-called bypass circuit (see the circuit diagram indicated by the JIS symbol in FIG. 9), and is greatly different in that such a bypass circuit is not used. The JIS symbol in FIG. 8 is the same as the JIS symbol in FIG.
This is because there is no symbol that distinguishes both. In addition, even if a force that pushes the regulating member 27 and the adjustment throttle 25 upward is exerted by the action of the hydraulic pressure,
As shown in FIG. 1, the restricting member 27 and the adjusting throttle 25 come into contact with the back surface of the safety plate 30, so that they are prevented from jumping out. That is, the regulating member 27 is also used for the adjustment throttle 2.
5 is also a screw type, so that it does not jump out by hydraulic pressure in the direction of tightening, but may jump out by hydraulic pressure if it is turned too much in the loosening direction. However, the presence of the safety plate 30 prevents the danger of jumping out even when the safety plate 30 is turned in the loosening direction.

As described above, the cylinder device 1 of the present embodiment is
Although the hydraulic cylinder device 1 has been described, the present invention is also applicable to a pneumatic cylinder device having a similar configuration.
Further, as the cylinder device, there are various types other than those provided with a flange on the head side and those provided on the rod side, and the cylinder device of the present invention can be applied to any of these. Furthermore, although the cylinder device 1 of the present embodiment has been described as having a structure capable of controlling both the meter-in side and the meter-out side, in the present invention, control of either the meter-in side or the meter-out side is performed. It is also applicable as a possible cylinder device.

[0041]

According to the first aspect of the present invention, since the opening / closing member and the adjusting throttle are built in the flange, the flow control valve is connected like a conventional external flow control valve. This eliminates the need for any work to perform the operation, allows a large space for the device such as a jig, and prevents the size of the workpiece from being limited. Therefore, it is possible to prevent dangers such as oil leakage that occur when connecting the conventional external flow control valve.

Further, in the cylinder device according to the second aspect of the present invention, since the opening / closing member and the adjusting throttle are disposed in the respective flow paths on the suction side and the discharge side of the flange, one cylinder is provided. The device enables control not only on the meter-in side (suction side) but also on the meter-out side (discharge side). Therefore, the present invention can be widely applied to various devices such as a jig, and the flow rate of the fluid can be controlled safely and reliably. Further, by fitting the adjusting throttle, the opening / closing member, and the regulating member into the first to third arranging holes, the assembly can be easily performed.
The cylinder device can be manufactured at low cost.

Further, the safety of the cylinder device according to the seventh aspect of the present invention is extremely high because the adjusting throttle and the safety plate for preventing the regulating member from protruding outside are mounted.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a cylinder device of the present invention.

FIG. 2 is an exploded perspective view showing the cylinder device of the embodiment.

FIG. 3 is a perspective view showing a fluid flow path of the cylinder device of the embodiment in a partially broken manner.

4A and 4B are diagrams showing a fluid flow path of a flange of the cylinder device of the embodiment, FIG. 4A is a rear view of the flange, FIG. 4B is a cross-sectional view taken along line AA ′ of FIG. (C) is a sectional view taken along line BB 'of (a).

FIG. 5 is a perspective view showing a structure of an opening / closing member, an adjustment throttle, and a regulating member of the cylinder device of the embodiment.

FIG. 6 is a sectional view showing a structure on a meter-in side of the cylinder device according to the embodiment.

FIG. 7 is a sectional view showing a structure on a meter-out side of the cylinder device according to the embodiment. You.

FIG. 8 is a front view showing a safety plate of the cylinder device according to the embodiment. You.

FIG. 9 is a perspective view showing an example of a conventional cylinder device.

[Explanation of symbols]

Reference Signs List 1 cylinder device, 2 piston rod, 3 cylinder body, 3a suction-side flow path, 3b discharge-side flow path, 4
Internal gap, 5 clamper, 6 link plate, 11
Flange, 12 Base of flange, 13 Flow path on suction side of flange, 14 Flow path on discharge side of flange, 13
a, 14a, first flow path, 13b, 14b second flow path, 15 first arrangement hole, 16 second arrangement hole, 17 third arrangement hole, 21 Opening / closing member (meter-in side), 22, 32 Check valve, 22a, 32a
Fluid holes 22c, 32c Positioning holes, 2
3,33 spring, 24,34 steel ball (ball),
25 adjustment throttle, 27 regulating member, 30 safety plate, 30a hole for tool, 31 opening / closing member (meter-out side), R seal member (O-ring)

Claims (7)

[Claims] A cylinder body in which a piston rod expands and contracts; and a flange provided on the cylinder body.
In a cylinder device in which a fluid flow path is formed continuously between the cylinder body and the flange, an opening / closing member for opening and closing the flow path of the flange and an adjustment throttle for adjusting an opening / closing state of the opening / closing member are provided on the flange. A cylinder device, which is provided. 2. A cylinder body in which a piston rod expands and contracts, and a flange provided on the cylinder body,
In a cylinder device in which a flow path on the suction side and a flow path on the discharge side of a fluid are continuously formed in the cylinder body and the flange, respectively, the flow paths on the suction side and the discharge side of the flange are opened and closed in the flange. A cylinder device comprising an opening / closing member and an adjusting throttle for adjusting the opening / closing state of each of these opening / closing members. 3. The method according to claim 1, wherein the adjusting throttle is formed in a screw type that is turned with a dedicated tool, and is disposed in a first mounting hole formed continuously with the flow path of the flange. The cylinder device according to claim 1 or 2, wherein: 4. The opening / closing member comprises a check valve having a hole through which a fluid is formed, a spring, and a steel ball,
In the flow path on the suction side of the flange, a steel ball is provided to the check valve via a spring, and this steel ball opens and closes the flow path of the flange, while the flow path on the discharge side of the flange has a check valve. A spring is provided via a steel ball,
3. The cylinder device according to claim 2, wherein the steel ball opens and closes a hole through which the fluid of the check valve passes. 5. A second arranging hole is continuously formed in each of a flow path on the suction side and a discharge side of the flange, and the opening / closing member is connected to the opening / closing member through the second arranging hole. The cylinder device according to claim 4, wherein the suction side and the discharge side are arranged in the same direction from the same direction. 6. A third arrangement hole which is continuous with the flow path of the flange is formed, and a regulating member which regulates movement of the check valve is arranged in the third arrangement hole. The cylinder device according to claim 4 or 5, wherein 7. A safety plate for preventing the adjustment throttle and the regulating member from jumping out of the flange is attached to the flange, and a hole through which a dedicated tool for turning the adjustment throttle is passed is formed in the safety plate. The cylinder device according to claim 5 or 6, wherein: