Electromagnetic valve assembly with stop valve and stop valve module for use in the same

Abstract

To provide an electromagnetic valve assembly with a stop valve which can suppress the reduction of a flow rate of compressed air, and a stop valve module.SOLUTION: In an electromagnetic valve assembly 1 with a stop valve, a stop valve module 40 having a stop valve 61 is interposed between a plurality of electromagnetic valves 10 and an air intake / exhaust base 20. The module has: an upper-side end face 43a having a first end 40a at one end in a longitudinal direction, and connected with the electromagnetic valves while being opened at a plurality of upper-side openings; a lower-side end face 43b opened at a plurality of lower-side openings, and connected with the air intake / exhaust base; and a communication flow passage group 44 composed of a plurality of communication flow passages for making the upper-side / lower-side openings communicate with each other. The communication flow passages include an air intake communication flow passage 52, and the air intake communication flow passage has first and second air intake / exhaust flow passages 52a, 52b further extending to a first end side rather than a second air exhaust communication flow passage 54 which is arranged at the most first end side out of the communication flow passage group, and a flow passage communication part 52c for making end parts of the communication flow passages communicate with each other. The stop valve opens and closes the flow passage communication part.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a solenoid valve assembly with a stop valve, in which a plurality of solenoid valves are mounted and connected in a row widthwise to an air supply / exhaust base such as a manifold having a main air supply flow path and a main exhaust flow path common to the solenoid valves, and to a stop valve module used therewith. [Background technology]

[0002] A solenoid valve assembly in which a plurality of solenoid valves are mounted on an air intake / exhaust base such as a manifold having a main air intake passage and a main exhaust passage common to the solenoid valves is already known. In this conventional solenoid valve assembly, when a specific solenoid valve is to be removed from the air intake / exhaust base for replacement or the like, it is necessary to stop the supply of compressed air to the main air intake passage and stop all the solenoid valves in order to prevent air leakage, before removing the solenoid valve that needs to be replaced.

[0003] Therefore, in the manifold type solenoid valve described in Patent Document 1, a stop valve capable of individually cutting off the air supply to the solenoid valve is disposed between each solenoid valve and the manifold base. By providing such a stop valve, it becomes possible to remove a specific solenoid valve while keeping the other solenoid valves in operation.

[0004] Recently, in order to realize a compact solenoid valve assembly, it is required to reduce the width of the solenoid valve. Therefore, in order to arrange a stop valve as disclosed in Patent Document 1, the width of the stop valve module including the stop valve must be made as small as that of the solenoid valve. However, in the stop valve module disclosed in Patent Document 1, the cross section of the flow passage that communicates between the solenoid valve and the air supply / exhaust base is narrowed by the valve rod, which reduces the flow rate of compressed air. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 61-197364 Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, the technical object of the present invention is to provide a solenoid valve assembly with a stop valve, which is formed by disposing a stop valve between a solenoid valve and an air supply / exhaust base, and which is capable of minimizing reduction in the flow rate of compressed air, and to provide a stop valve module including such a stop valve. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a solenoid valve assembly having a plurality of solenoid valves, an air supply / exhaust base in which a main air supply flow path and a main exhaust flow path are formed, and an output port provided corresponding to each of the plurality of solenoid valves, and the plurality of solenoid valves are operated individually to switch the communication state between the output port and the main air supply flow path and the main exhaust flow path. The solenoid valve assembly is formed by interposing a stop valve module having a stop valve capable of individually cutting off the air supply to these solenoid valves between each of the plurality of solenoid valves and the air supply / exhaust base, and the stop valve module has a first end and a second end provided at both longitudinal ends, an upper end face having a plurality of upper openings and to which the solenoid valves are detachably connected, a lower end face having a plurality of lower openings and to which the air supply / exhaust base is connected, and a stop valve module having a stop valve that can individually cut off the air supply to these solenoid valves. and a communication flow path group consisting of a plurality of communication flow paths that mutually communicate upper openings and the lower openings corresponding to these upper openings, the plurality of communication flow paths include an air supply communication flow path that communicates with the main air supply flow path to supply air to the solenoid valve, and an exhaust communication flow path that communicates with the main exhaust flow path to pass exhaust from the solenoid valve, the air supply communication flow path includes a first air supply communication flow path that extends in the longitudinal direction and has an end portion on the second end side connected to an air supply lower opening of the plurality of lower openings, and a second air supply communication flow path that extends in the longitudinal direction and has an end portion on the second end side connected to an air supply upper opening of the plurality of upper openings, the first end side ends of the first and second air supply communication flow paths extend further toward the first end side than an outermost communication flow path that is arranged furthest to the first end side of the communication flow path group, and the first end side ends of the first and second air supply communication flow paths communicate with each other through a flow path communication portion, The stop valve opens and closes the flow passage communication portion.

[0008] In this case, preferably, the multiple upper openings are arranged in a row on the upper end face in the longitudinal direction, and the multiple lower openings are arranged in a row on the lower end face in the longitudinal direction, the stop valve module has a first side and a second side face facing away from each other at both ends in the short direction, the multiple communication flow paths in the communication flow path group other than the air supply communication flow path extend in the vertical direction between the upper opening and the lower opening, and among the multiple communication flow paths, the communication flow path extending in the vertical direction and arranged on the first end side of the air supply upper opening and the air supply lower opening has the first and second air supply communication flow paths arranged on the first side side in a side view, and intersects with these first and second air supply communication flow paths.

[0009] In addition, preferably, an expansion portion is formed on the first side of the stop valve module, protruding outward in the short direction and extending in the long direction, and the first and second air supply communication passages are arranged side by side on the inside of the short direction of the expansion portion.

[0010] In addition, preferably, the first and second air supply communication passages are connected to the lower air supply opening and the upper air supply opening via a first communication portion and a second communication portion, and the second end sides of the first and second air supply communication passages are connected across the side and bottom surfaces of each of the first and second communication portions.

[0011] In addition, preferably, a valve hole is provided along an axis extending in the longitudinal direction on the first end side of the stop valve module relative to the flow path communication portion, the second end side end of the valve hole is opened in the flow path communication portion, the stop valve having a valve body provided at an end side of the second end is slidably accommodated within the valve hole, and a valve seat is provided within the flow path communication portion, the valve seat being arranged on the axis and capable of being moved toward and away from the valve body as the stop valve reciprocates.

[0012] Preferably, the stop valve has an operating part at an end portion on the first end side thereof, and by operating the operating part, the stop valve can be reciprocated in the axial direction of the valve hole between a closed position which closes the air supply communication passage and an open position which opens the air supply communication passage, and the stop valve module has a locking mechanism which forms a locked position which prevents the stop valve from moving in the axial direction when in the closed position, and an unlocked position which allows the stop valve to move in the axial direction. Preferably, the operating part has an operating shaft which is rotatably inserted into an operating hole connected to the valve hole, and the locking mechanism has an engaging part provided on the operating shaft and an engaged part provided in the operating hole, and can be selectively switched between the locked position in which the engaging part and the engaged part are engaged and the unlocked position in which the engagement between the engaging part and the engaged part is released by rotating the operating shaft.

[0013] In addition, preferably, the stop valve is provided with a spring member that biases the stop valve in a direction that moves the valve body away from the valve seat, and when the operating portion is operated to the unlocked position, the biasing force of the spring member moves the stop valve from the closed position to the open position.

[0014] In a preferred embodiment, a sealing member is provided around the axis of the stop valve on the first end side of the valve body, and the valve hole is connected to a first exhaust flow path leading to a portion of the air supply communication flow path downstream of the valve seat and a second exhaust flow path communicating with the atmosphere, a first exhaust opening provided in the valve hole in the first exhaust flow path is arranged on the second end side of a second exhaust opening provided in the valve hole in the second exhaust flow path, and when the stop valve moves to the open position, the sealing member moves between the first exhaust opening and the second exhaust opening in the valve hole to block communication between the first and second exhaust flow paths, and when the stop valve moves to the closed position, the sealing member moves toward the second end side of the first exhaust opening in the valve hole to communicate between the first and second exhaust flow paths through the valve hole.

[0015] Further, a stop valve module according to the present invention is a stop valve module comprising an air supply communication passage for passing compressed air to be supplied to a fluid pressure device, an exhaust communication passage for passing exhaust air from the fluid pressure device, and a stop valve for opening and closing the air supply communication passage, the stop valve module having a first end and a second end provided at both ends in a longitudinal direction, an upper end face having a plurality of upper openings, a lower end face having a plurality of lower openings, and a communication passage group consisting of a plurality of communication passages that mutually communicate the plurality of upper openings with the lower openings corresponding to these upper openings, and the communication passage group is composed of at least the air supply communication passage and the exhaust communication passage. the air supply communication flow passage includes a first air supply communication flow passage extending in the longitudinal direction and having an end on the second end side connected to an air supply lower opening among the plurality of lower openings, and a second air supply communication flow passage extending in the longitudinal direction and having an end on the second end side connected to an air supply upper opening among the plurality of upper openings, the ends on the first end side of the first and second air supply communication flow passages extend further toward the first end side than an outermost communication flow passage arranged furthest to the first end side of the communication flow passage group, the ends on the first end side of the first and second air supply communication flow passages are connected to each other through a flow passage communication portion, and the stop valve opens and closes the flow passage communication portion. Effect of the Invention

[0016] As described above, according to the present invention, it is possible to provide a solenoid valve assembly with a stop valve, which is formed by disposing a stop valve between a solenoid valve and an air supply / exhaust base, and which is capable of minimizing reduction in the flow rate of compressed air, and a stop valve module including the stop valve. [Brief description of the drawings]

[0017] [Figure 1] 1 is a perspective view of a stop valve-equipped solenoid valve assembly according to an embodiment of the present invention; [Diagram 2] 2 is a partial cross-sectional view of a stop valve-equipped solenoid valve assembly taken along the line II-II of FIG. 1. [Diagram 3] FIG. 2 is an explanatory diagram in which the solenoid valve in FIG. 1 is symbolically represented. [Figure 4] FIG. 2 is a perspective view of a stop valve module. [Diagram 5] FIG. 2 is a plan view of the stop valve module. [Figure 6] FIG. 4 is a bottom view of the stop valve module. [Figure 7] 7 is a cross-sectional view of the stop valve module taken along line VII-VII of FIG. 5. [Figure 8] 8 is a cross-sectional view of the stop valve module taken along line VIII-VIII of FIG. 7. [Figure 9] 9 is a cross-sectional perspective view of the stop valve module corresponding to the view seen from the arrows IX-IX in FIG. 8. [Figure 10] FIG. [Figure 11] 4 is a cross-sectional view of the flow passage opening / closing portion when the stop valve is in an open position. FIG. [Figure 12] 4 is a cross-sectional view of the flow passage opening / closing portion when the stop valve is in a closed position. FIG. [Figure 13] FIG. [Figure 14] FIG. 13 is a perspective view of a modified example of the stop valve-equipped solenoid valve assembly. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The solenoid valve assembly with a stop valve and the stop valve module used therein according to the present invention will be described below. As shown in Fig. 1, this solenoid valve assembly with a stop valve 1 is configured by interposing a stop valve module 40 having a stop valve 61 capable of cutting off the supply of air individually to the solenoid valves 10 between a plurality of solenoid valves 10 and an air supply / exhaust base 20 that supplies and exhausts compressed air to these solenoid valves 10. Note that the solenoid valve assembly with a stop valve 1 of this embodiment will be described taking as an example a non-plug-in type in which electrical wiring is performed on the solenoid valve 10 side.

[0019] The air supply and exhaust base 20 is formed in a rectangular parallelepiped shape, and has a main air supply flow path 22 and first and second main exhaust flow paths 23a, 23b formed therein. The air supply and exhaust base 20 is formed in a rectangular shape that is elongated in the width direction when viewed from the front, and is formed in a rectangular shape that is elongated in the depth direction when viewed from the side. The front, top surface, and both side surfaces in the width direction of the air supply and exhaust base 20 are formed in a flat shape.

[0020] The main air intake passage 22 penetrates between the side surfaces on both sides in the width direction of the air intake and exhaust base 20, with a first main exhaust passage 23a penetrating between the side surfaces on the rear side of the main air intake passage 22 and a second main exhaust passage 23b penetrating between the side surfaces on the front side of the main air intake passage 22. That is, inside the air intake and exhaust base 20, three passages, the main air intake passage 22 and the first and second main exhaust passages 23a, 23b, are provided between the side surfaces.

[0021] 2, a main air supply hole 24 extending upward is connected to the upper part of the main air supply passage 22, and the main air supply hole 24 is connected to a main air supply port 25 opened in the mounting surface 20a of the air supply and exhaust base 20. In this embodiment, a plurality of main air supply holes 24 are connected to the main air supply passage 22 at predetermined intervals in the width direction, and each of the plurality of main air supply holes 24 is connected to a corresponding one of a plurality of main air supply ports 25 opened at predetermined intervals in the width direction on the mounting surface 20a of the air supply and exhaust base 20.

[0022] First and second main exhaust holes 26a, 26b extending upward are connected to the upper portions of the first and second main exhaust flow paths 23a, 23b, respectively, and these first and second main exhaust holes 26a, 26b are connected to first and second main exhaust ports 27a, 27b opened on the mounting surface 20a of the air supply and exhaust base 20. In this embodiment, a plurality of first main exhaust holes 26a are connected to the first main exhaust flow path 23a at predetermined intervals in the width direction, and a plurality of first main exhaust ports 27a are opened on the mounting surface 20a of the air supply and exhaust base 20 at predetermined intervals in the width direction. Each of the plurality of first main exhaust holes 26a is connected to a corresponding one of the plurality of first main exhaust ports 27a. Further, a plurality of second main exhaust holes 26b communicate with the second main exhaust flow passage 23b at predetermined intervals in the width direction, and a plurality of second main exhaust ports 27b are opened at predetermined intervals in the width direction on the mounting surface 20a of the air supply and exhaust base 20. Each of the plurality of second main exhaust holes 26b communicates with a corresponding one of the plurality of second main exhaust ports 27b.

[0023] First and second output ports 28a, 28b are provided on the front end surface of the air supply / exhaust base 20, with one end of a first output hole 29a communicating with the first output port 28a and the other end of the first output hole 29a communicating with a first main output port 30a provided on the mounting surface 20a of the air supply / exhaust base 20. One end of a second output hole 29b communicating with the second output port 28b and the other end of the second output hole 29b communicating with a second main output port 30b provided on the mounting surface 20a. First and second pipe joints 31a, 31b are inserted into the first and second output ports 28a, 28b, respectively.

[0024] In this embodiment, a compressed air supply source is connected to the main air intake passage 22, the first and second main exhaust passages 23a, 23b are open to the outside air, and fluid pressure equipment is connected to the first and second pipe fittings 31a, 31b.

[0025] Next, the solenoid valve 10 will be described. As shown in Figures 2 and 3, the solenoid valve 10 comprises a main valve portion 11 equipped with a valve mechanism for switching the flow path through which compressed air flows, and a solenoid operating portion 12 for driving the valve mechanism. The solenoid valve assembly 1 with a stop valve of this embodiment is used in a state where other solenoid valves 10 having a similar structure are adjacent to the solenoid valve 10 in the width direction and assembled together. Since the structure of such a solenoid valve 10 is publicly known, its main structure and operation will be briefly described here.

[0026] The solenoid valve 10 of this embodiment is a 5-port 2-position solenoid valve, and the main valve section 11 of the solenoid valve 10 has a valve body 13 incorporating a valve mechanism. The valve body 13 is formed in a rectangular parallelepiped shape that is elongated in the depth direction, and is formed by combining a first block 13a incorporating the valve mechanism and a second block 13b that also serves as a piston box. The side surfaces on both sides in the width direction and the bottom surface of the valve body 13 are formed in a flat shape that extends vertically and in the longitudinal direction.

[0027] A mounting surface 14 is formed on the underside of the first block 13a of the valve body 13 for mounting the valve body 13 to the upper end surface 43a of the stop valve module 40. This mounting surface 14 is provided with, in order from the back to the front, a first exhaust port EA, a first output port A, an air supply port P, a second output port B, and a second exhaust port EB, and the communication states of these ports EA, A, P, B, and EB are switched by the operation of the valve mechanism.

[0028] The electromagnetic operation unit 12 is provided with connectors 12a for receiving electric signals and power supply transmitted from a controller (not shown) and for transmitting electric signals to the controller from the electromagnetic operation unit 12. In this embodiment, the connectors 12a include one disposed on the back side of the valve body 13 and one disposed on both sides in the depth direction of the valve body 13 (see FIG. 1).

[0029] The solenoid valve 10 configured in this manner is detachably attached to the stop valve module 40 by fastening means such as bolts, with the mounting surface 14 abutting the upper end surface 43a of the stop valve module 40.

[0030] Next, the stop valve module 40 will be described. As shown in FIG. 2 and FIG. 4 to FIG. 10, the stop valve module 40 is formed in a rectangular parallelepiped shape elongated in the depth direction. The stop valve module 40 includes a first end 40a and a second end 40b provided at both ends in the longitudinal direction, a flow path forming section 42 in which a communication flow path group 44 consisting of a plurality of connecting flow paths 50-54 is formed, and a flow path opening / closing section 59 equipped with a stop valve 61 capable of cutting off the supply of air to the solenoid valve 10. The flow path forming section 42 and the flow path opening / closing section 59 include a flow path forming body 43 and a flow path opening / closing body 60, which are their respective bodies. Each of these bodies 43, 60 is formed in a rectangular parallelepiped shape elongated in the longitudinal direction, and these bodies 43, 60 are integrally connected in a state in which the end face on the first end 40a side of the flow path forming body 43 and the end face on the second end 40b side of the flow path opening / closing body 60 are abutted against each other.

[0031] The upper end surface 43a and the lower end surface 43b of the flow passage forming body 43 are formed in a rectangular shape that is elongated in the longitudinal direction. On the upper end surface 43a, an upper first exhaust port (upper opening) 46a, an upper first output port (upper opening) 46b, an upper air supply port (upper opening) 46c, an upper second output port (upper opening) 46d, and an upper second exhaust port (upper opening) 46e are arranged in a row in this order from the second end 40b side to the first end 40a side (see FIG. 5). On the other hand, on the lower end face 43b, a lower first exhaust port (lower opening) 48a, a lower first output port (lower opening) 48b, a lower air supply port (lower opening) 48c, a lower second output port (lower opening) 48d, and a lower second exhaust port (lower opening) 48e are arranged in a row in this order from the second end 40b side to the first end 40a side (see FIG. 6). Then, inside the flow passage forming body 43, a communication flow passage group 44 is formed (see FIG. 7) consisting of a plurality of communication flow passages 50-54 that mutually communicate a plurality of ports 46a-46e opened on the upper end face 43a with ports 48a-48e opened on the lower end face 43b corresponding to these ports 46a-46e.

[0032] These ports 46a, 46b, 46c, 46d, and 46e opened in the upper end face 43a are connected to corresponding ports EA, A, PB, and EB (see FIG. 2) opened in the mounting surface 14 of the solenoid valve 10. Moreover, these ports 48a, 48b, 48c, 48d, and 48e opened in the lower end face 43b are connected to corresponding ports 27a, 30a, 25, 30b, and 27b opened in the mounting surface 20a of the supply and exhaust base 20 (see FIG. 2).

[0033] In this embodiment, the ports 46a-46e, 48a-48e opened on the upper end surface 43a and the lower end surface 43b are arranged close to each other in the longitudinal direction and close to the first side surface 43c and the second side surface 43d that face each other at both ends in the width direction of the flow passage forming body 43, as shown in Figures 5 and 6. The upper and lower first exhaust ports 46a, 48a open in a T-shape tapered toward the second end 40b, and the upper and lower second exhaust ports 46e, 48e open in a T-shape tapered toward the first end 40a. Furthermore, the upper and lower first output ports 46b, 48b, the upper and lower air supply ports 46c, 48c, and the upper and lower second output ports 46d, 48d each open in a square shape.

[0034] Next, the communication passage group 44 will be described. As shown in Fig. 7, the communication passage group 44 is composed of a first exhaust communication passage (exhaust communication passage) 50 that connects the upper and lower first exhaust ports 46a, 48a to each other and communicates with the first main exhaust passage 23a, a first output communication passage 51 that connects the upper and lower first output ports 46b, 48b to each other, an air supply communication passage 52 that connects the upper and lower air supply ports 46c, 48c (upper air supply opening, lower air supply opening) to each other and communicates with the main air supply passage 22, a second output communication passage 53 that connects the upper and lower second output ports 46d, 48d to each other, and a first exhaust communication passage (exhaust communication passage) 54 that connects the upper and lower second exhaust ports 46e, 48e to each other and communicates with the second main exhaust passage 23a. That is, the communication passage group 44 is made up of five communication passages 50-54 including first and second exhaust communication passages 50, 54, first and second output communication passages 51, 53, and an air supply communication passage 52.

[0035] Here, the multiple communication passages 50, 51, 53, 54 other than the air supply communication passage 52 in the communication passage group 44 extend in the vertical direction between the upper end face 43a and the lower end face 43b. In this embodiment, the first exhaust communication passage 50 has a cross-sectional shape (T-shape) similar to the upper and lower first exhaust ports 46a, 48a and extends linearly in the vertical direction. In addition, the first output communication passage 51 has a cross-sectional shape (square shape) similar to the upper and lower first output ports 46b, 48b and extends linearly in the vertical direction.

[0036] Here, the second output communication passage 53 and the second exhaust communication passage 54, which are arranged closer to the first end 40a than the upper and lower air intake ports 46c, 48c, among the multiple communication passages 50-54, intersect with the first and second air intake communication passages 52a, 52b, with the first and second air intake communication passages 52a, 52b being arranged on the first side surface 43c, when viewed from the side of the stop valve module 40 in the short direction.

[0037] Therefore, the cross-sectional shape of both vertical ends of the second output communicating passage 53 is a square shape similar to the shapes of the upper and lower second output ports 46d, 48d. However, since the first and second air supply communicating passages 52a, 52b extend across a part of the second output communicating passage 53, the cross-sectional shape of the vertical middle part of the second output communicating passage 53 is formed into a rectangular shape narrower than the openings of the upper and lower second output ports 46d, 48d, as shown in FIG.

[0038] Similarly to the second output communicating passage 53, the second exhaust communicating passage 54 also has a square cross-sectional shape at both vertical ends similar to the shapes of the upper and lower second exhaust ports 46e, 48e. However, since the first and second air supply communicating passages 52a, 52b cross a part of the second exhaust communicating passage 54, the cross-sectional shape of the middle part in the vertical direction of the second exhaust communicating passage 54 is formed into a rectangular shape narrower than the openings of the upper and lower second exhaust ports 46e, 48e.

[0039] Next, the supply air communication passage 52 will be described. As shown in Fig. 7 to Fig. 9, the supply air communication passage 52 has a first supply air communication passage 52a extending in the longitudinal direction and having an end portion on the second end 40b side connected to a lower supply air port 48c (lower supply air opening) for supplying air among a plurality of lower openings, and a second supply air communication passage 52b extending in the longitudinal direction and having an end portion on the second end 40b side connected to an upper supply air port 46c (upper supply air opening) for supplying air among a plurality of upper openings. The ends on the first end 40a side of the first and second supply air communication passages 52a, 52b extend further toward the first end 40a side than the second exhaust communication passage 54 (outermost communication passage) arranged closest to the first end 40a side among the communication passage group 44. The ends of the first and second air supply communication channels 52a, 52b on the first end 40a side are connected to each other via a channel communication portion 52c.

[0040] The first and second air supply communication passages 52a, 52b are arranged side by side along the longitudinal direction near the first side surface 43c of the passage forming portion 42 of the stop valve module 40 and in the vertical middle portion of the first side surface 43c. An expansion portion 45 is formed on the first side surface 43c, protruding outward in the short side direction and extending in the longitudinal direction, and the first and second air supply communication passages 52a, 52b are arranged inside the expansion portion 45. That is, since the first and second air supply communication passages 52a, 52b are arranged near the first side surface 43c of the passage forming body 43, the expansion portion 45 is formed on the first side surface 43c.

[0041] The first and second air supply communication passages 52a, 52b have a cross-sectional shape that is vertically elongated and rectangular (see FIG. 8). In this embodiment, the vertical height h of the cross section of the first and second air supply communication passages 52a, 52b is approximately the same as the width w2 of one side of the upper and lower air supply ports 46c, 48c, but the width w1 of the cross section of the first and second air supply communication passages 52a, 52b is smaller than the width w2 of one side of the air supply ports 46c, 48c. In other words, the flow passage cross sections of the first and second air supply communication passages 52a, 52b are narrower than the openings of the upper and lower air supply ports 46c, 48c.

[0042] 7 and 9, a first communication portion 55a and a second communication portion 55b extending inward in the up-down direction of the flow path forming portion 42 are connected to the upper and lower air supply ports 46c, 48c, respectively. In this embodiment, the cross-sectional shape of the first and second communication portions 55a, 55b is formed into a square shape, similar to the upper and lower air supply ports 46c, 48c.

[0043] The end portions of the first and second air supply communication passages 52a, 52b on the second end 40b side are connected to the side surface 55c and bottom surface 55d on the first end 40a side of the bottom of each of the first and second communication parts 55a, 55b across these surfaces 55c, 55d. In this embodiment, a communication port 56 is opened across these side surface 55c and bottom surface 55d, and the end portions of the first and second air supply communication passages 52a, 52b on the second end 40b side are connected to the lower and upper air supply ports 48c, 46c through this communication port 56. Therefore, the degree to which the air flowing through this communication port 56 to the first and second air supply communication passages 52a, 52b is throttled is suppressed as much as possible.

[0044] 8, the first and second air supply communicating passages 52a, 52b are disposed closer to the first side surface 43c, so that the first and second air supply communicating passages 52a, 52b narrow the flow passage cross section of the second output communicating passage 53. However, because the air supply communicating passages 52a, 52b are disposed inside the expansion section 45, the area within the first output communicating passage 53 that is crossed by the air supply communicating passages 52a, 53a is kept as small as possible.

[0045] Next, the flow path opening / closing part 59 will be described. In the flow path opening / closing part 59, a flow path opening / closing body 60 that forms the body of the flow path opening / closing part 59 will be described. As shown in Fig. 7 and Fig. 8, the flow path opening / closing body 60 includes a flow path communicating part 52c, a valve hole 62 that is provided on the first end 40a side from the flow path communicating part 52c and along an axis L extending in the longitudinal direction, and a stop valve 61 that is provided with a valve body 63 at an end on the second end 40b side and is accommodated in the valve hole 62 so as to be slidable along the axis L.

[0046] The end of the valve hole 62 on the second end 40b side is opened at the end of the first end 40a side of the flow path communication portion 52c, and the end of the valve hole 62 on the first end 40a side is open to the end face on the first end 40a side of the flow path opening / closing body 60.

[0047] The flow passage communication part 52c has a first flow passage communication part 52c1 and a second flow passage communication part 52c2 which are extended in the longitudinal direction and arranged vertically side by side. The first flow passage communication part 52c1 has an end part on the second end 40b side opening into an end face on the second end 40b side of the flow passage opening and closing body 60 and connected to the first air supply communication flow passage 52a. The second flow passage communication part 52c2 is disposed above the first flow passage communication part 52c1 and has an end part on the second end 40b side opening into an end face of the flow passage opening and closing body 60 and connected to the second air supply communication flow passage 52b. A communication partition part 52c3 is formed between the first and second flow passage communication parts 52c1 and 52c2 to partition the flow passage communication parts 52c1 and 52c2.

[0048] The communication partition 52c3 is connected to an end portion on the first end 40a side of the air supply partition 58 that separates the first and second air supply communication flow paths 52a, 52b, and the end portion on the first end 40a side of the communication partition 52c3 is located closer to the second end 40b than the end portion on the first end 40a side of the flow path communication portion 52c. The end portion on the first end 40a side of the communication partition 52c3 is provided with a valve seat 57 that is disposed on the axis L and to which the valve body 63 can come into contact and separate in association with the reciprocating movement of the stop valve 61. In this embodiment, the valve seat 57 is formed in an annular shape.

[0049] As shown in Figs. 7 and 10, the stop valve 61 has a valve body 64 formed in a shaft shape and an operating part 65 formed at the end of the stop valve 61 on the first end 40a side. The valve body 64 and the operating part 65 are integrally formed. The operating part 65 has an operating shaft 65a extending in the axial direction L, and the operating shaft 65a is rotatably inserted into an operating hole 62b connected to the valve hole 62. In this embodiment, the first end 40a side of the valve hole 62 is formed as the operating hole 62b. By operating the operating shaft 65a, the stop valve 61 can be reciprocated in the axial direction L of the valve hole 62 between a closed position P2 that closes the supply communication passage 52 and an open position P1 that opens the supply communication passage 52. In this embodiment, the stop valve 61 can be reciprocated between the open position P1 and the closed position P2 by moving the operating part 65 in the axial direction L.

[0050] The valve body 64 of the stop valve 61 has a large diameter shaft portion 64a that slidably fits into the valve hole 62, and a small diameter shaft portion 64b that extends from the end of the large diameter shaft portion 64a on the second end 40b side and has a smaller diameter than the large diameter shaft portion 64a. The large diameter shaft portion 64a and the small diameter shaft portion 64b are arranged coaxially. An annular shaft side step portion 64c is formed between the large diameter shaft portion 64a and the small diameter shaft portion 64b, and a valve hole side step portion 62a that extends toward the axis L of the valve hole 62 is formed at the end of the second end 40b side of the valve hole 62.

[0051] A compression spring 67 (spring member) is provided around the axis of the small diameter shaft portion 64b, which abuts against the shaft side step portion 64c and the valve hole side step portion 62a to urge the stop valve 61 toward the first end 40a. An annular valve body 63 that can be brought into contact with and separated from the valve seat 57 is attached to the end portion on the second end 40b side of the small diameter shaft portion 64b. Therefore, within the flow path connecting portion 52c, the stop valve 61 moves in the axial direction L, whereby the valve body 63 can be brought into contact with and separated from the valve seat 57.

[0052] In addition, the flow path opening / closing body 60 has a locking mechanism 70 that forms a locking position P3 that prevents the stop valve 61 from moving in the axial direction L in the closed position P2, and an unlocked position P4 that allows the stop valve to move in the axial direction.

[0053] As shown in Figs. 10 to 13, the lock mechanism 70 has an engagement groove 66 (engagement portion) provided in the operation portion 65 and a lock plate 71 (engaged portion) provided in the operation hole 62b. Before describing the lock mechanism 70, the peripheral structure of the lock mechanism 70 will be described. In a cross-sectional view of the stop valve 61 seen from the first end 40a, the large diameter shaft portion 64a in the operation portion 65 has a semicircular cutout portion 69 extending in the direction of the axis L. A protruding rib portion 68 having a diameter smaller than the outer diameter of the large diameter shaft portion 64a and protruding in a semicircular shape around the axis L and extending in the direction of the axis L (longitudinal direction) is formed at the bottom of the cutout portion 69, and a pair of flat portions 74a, 74b extending in the diameter direction of the large diameter shaft portion 64a are formed on both sides of the short side of the protruding rib portion 68. An engagement groove portion 66 is formed at the end portion of one of the flat portions 74a, 74b, on the first end 40a side, by being cut out downward from the flat portion 74a at an angle of approximately 90 degrees around the axis L of the protruding ridge portion 68.

[0054] As shown in Fig. 13, the locking plate 71 is formed in a plate shape with a pair of side surfaces 71a, 71b facing each other and having a width slightly smaller than that of the engagement groove portion 66. A semicircular recess 71c is formed on the upper surface of the locking plate 71. This recess 71c is formed so as to fit along the outer surface of the semicircular protruding ridge portion 68 described above. The locking plate 71 is inserted into the mounting recess 60a opened at the lower part on the first end 40a side of the operation hole 62b with the recess 71c facing upward (see Fig. 11).

[0055] The stop valve 61 is inserted into the valve hole 62 with the protruding rib 68 facing downward so that the protruding rib 68 engages with the recess 71c of the locking plate 71. When the stop valve 61 is moved to the open position P1 (see FIG. 11), an end face 69a on the second end 40b side of the notch 69 abuts against a side face 71b on the second end 40b side of the locking plate 71, thereby maintaining the stop valve 61 in the open position P1.

[0056] On the other hand, as shown in FIG. 12, when the stop valve 61 is moved to the closed position P2 and the operation shaft 65a is rotated clockwise when the stop valve 61 is viewed from the first end 40a side, the locking plate 71 is inserted into the engagement groove 66. Then, when the operation of the operation shaft 65a is released, the end face 66a (see FIG. 10) on the first end 40a side of the engagement groove 66 abuts against the side face 71b on the second end side of the locking plate 71 by the biasing force of the compression spring 67. That is, the rotation of the operation shaft 65a switches the position to the lock position P3 where the engagement groove 66 and the locking plate 71 are engaged with each other. Therefore, the movement of the stop valve 61 toward the first end 40a side is prevented, and the stop valve 61 is locked in the closed position P2.

[0057] Furthermore, when the operating shaft 65a switched to the locked position P3 is rotated to remove the engaging plate 71 from the engaging groove 66, the operating shaft 65a is switched to the unlocked position P4 where the engaging groove 66 is disengaged from the engaging plate 71. When the operation of the operating shaft 65a is released, the biasing force of the compression spring 67 moves the stop valve 61 from the closed position P2 to the open position P1.

[0058] 2 and 12, the solenoid valve assembly 1 with stop valve of this embodiment can individually cut off the air supply to the plurality of solenoid valves 10 by the stop valve module 40. Therefore, when the solenoid valve 10 breaks down, the solenoid valve 10 can be replaced by removing the solenoid valve 10 from the stop valve module 40 while the air supply to the broken solenoid valve 10 is cut off. However, when removing the solenoid valve 10, there is a risk that the compressed air remaining in the air supply communication passage 52 downstream of the valve seat 57 will be discharged from the upper air supply port 46c of the stop valve module 40.

[0059] Therefore, the stop valve module 40 of this embodiment is provided with a residual pressure exhaust mechanism 80 for preventing the discharge of compressed air when the solenoid valve 10 is removed from the module 40. As shown in FIG. 12, the residual pressure exhaust mechanism 80 includes a seal member 81 attached to the first end 40a side of the valve body 63 of the stop valve 61, a first exhaust flow path 82 that communicates with a portion of the supply air communication flow path 52 downstream of the valve seat 57, and a second exhaust flow path 83 that communicates with the valve hole 62 and the atmosphere. In this embodiment, the seal member 81 is attached around the axis L to the second end 40b side of the large diameter shaft portion 64a of the stop valve module 40. The first exhaust flow path 82 is connected to the flow path communication portion 52c.

[0060] The first exhaust flow passage 82 is formed so as to extend from the upper part of the flow passage communication part 52c through the inside of the stop valve module 40 to the valve hole 62, and the second exhaust flow passage 83 is formed so as to be located closer to the first end 40a than the first exhaust flow passage 82 and extend from the lower end of the stop valve module 40 through the inside of the stop valve module 40 to the valve hole 62. The first exhaust opening 82a opened in the valve hole 62 in the first exhaust flow passage 82 is disposed closer to the second end 40b than the second exhaust opening 83a opened in the valve hole 62 in the second exhaust flow passage 83. When the stop valve 61 moves to the open position P1, the seal member 81 moves between the first exhaust opening 82a and the second exhaust opening 83a in the axial direction L of the valve hole 62. When the stop valve 61 moves to the closed position P2, the seal member 81 moves closer to the second end 40b than the first exhaust opening 82a in the axial direction L of the valve hole 62.

[0061] Therefore, the first and second exhaust passages 82, 83 are connected through the gap between the valve hole 62 and the stop valve 61, so that compressed air remaining in the portion of the air supply communication passage 52 downstream of the valve seat 57 can be discharged to the outside.

[0062] Next, the operation of the solenoid valve assembly 1 with a stop valve will be described. As shown in Fig. 1 and Fig. 2, when compressed air is supplied to the main air intake passage 22 of the air intake and exhaust base 20, the compressed air is supplied to each of the plurality of stop valve modules 40. When the plurality of solenoid valves 10 are operated individually, the communication state between the first or second output port 28a, 28b, the main air intake passage 22, and the first or second main exhaust passage 23a, 23b is switched, and the compressed air is output from the first or second output port 28a, 28b, or exhausted from the first or second main exhaust passage 23a, 23b.

[0063] Here, the compressed air supplied from the main air intake passage 22 of the air intake and exhaust base 20 to the stop valve module 40 is supplied to the solenoid valve 10 through the air intake communication passage 52. Then, in accordance with the operation of the solenoid valve 10, the compressed air is supplied from the first output port A or the second output port B of the solenoid valve 10 to the first or second output communication passage 51, 53 of the stop valve module 40. Here, the second output communication passage 53 is designed to prevent a reduction in the flow rate of compressed air flowing through this output communication passage, so that a reduction in the flow rate of compressed air supplied to the fluid pressure equipment from the second output ports 28a, 28b of the air intake and exhaust base 20 through this output communication passage can be prevented as much as possible.

[0064] In addition, when the exhaust gas flowing into the second output port 28b is discharged through the second output passage 53 and the second exhaust communication passage 54 of the solenoid valve 10 and the stop valve module 40, the second exhaust communication passage 54, like the second output communication passage 53, suppresses the reduction in the flow rate of compressed air flowing through the second exhaust communication passage 54, and therefore it is possible to suppress as much as possible the reduction in the flow rate of exhaust gas discharged to the second main exhaust passage 23b through the second exhaust communication passage 54.

[0065] Next, a method for replacing the solenoid valve 10 in the case where one of the plurality of solenoid valves 10 fails while compressed air is being supplied to the plurality of solenoid valves 10 from the air supply / exhaust base 20 will be described. In this case, as shown in Figures 11 and 12, the operating shaft 65a of the stop valve module 40 connected to the failed solenoid valve 10 is operated toward the second end 40b in the axis L direction to move the stop valve 61 to the closed position P2. Then, the operating shaft 65a is rotated about the axis L to lock the stop valve 61 in the closed position P2 by the lock mechanism 70.

[0066] Therefore, the flow passage communication portion 52c is blocked, stopping the supply of air to the failed solenoid valve 10, and the compressed air remaining in the portion of the air supply communication passage 52 downstream of the valve seat 57 is exhausted to the outside from the stop valve module 40.

[0067] Then, the screw that connects the faulty solenoid valve 10 to the stop valve module 40 is removed, and the faulty solenoid valve 10 is removed from the stop valve module 40. Then, the non-faulty solenoid valve 10 is attached to the stop valve module 40 via the screw, and the replacement work of the faulty solenoid valve 10 is completed. In this way, when a solenoid valve 10 fails, the faulty solenoid valve 10 can be replaced while continuing to supply air to the other solenoid valves 10. In addition, when the faulty solenoid valve 10 is removed from the stop valve module 40, the compressed air remaining in this module 40 is not discharged from the stop valve module 40, so the replacement work of the faulty solenoid valve 10 can be performed smoothly.

[0068] Incidentally, the above-mentioned solenoid valve assembly 1 with a stop valve has been described as an example of a non-plug-in type in which electrical wiring is performed on the solenoid valve 10 side, but this is not limited to this. As shown in Fig. 14, the solenoid valve assembly 1' with a stop valve may be a plug-in type in which electrical wiring is performed to a connector 91 of an end block 90 attached to one end in the width direction.

[0069] This plug-in type solenoid valve assembly 1' with a stop valve is constructed by connecting each of a plurality of solenoid valves 10 to the air supply / exhaust base 20 via a stop valve module 40 interposed between them, connecting first and second port blocks 92a, 92b to both widthwise ends of the air supply / exhaust base 20, and connecting an end block 90 to one side of the first port block 92a.

[0070] The first and second port blocks 92a, 92b are provided with a main supply port 93a communicating with the main air supply passage 22 of the air supply / exhaust base 20, and a main exhaust port 93b communicating with the first and second main exhaust passages 23a, 23b. The end block 90 supplies power and electrical signals to drive sources provided in each of the multiple solenoid valves 10 via connectors 91 provided on the upper surface of the end block 90.

[0071] In the above-described embodiment, the operation part 65 of the stop valve 61 is formed on the same axis line L as and integral with the valve main body 64, but the present invention is not limited to this. The operation part 65 may be provided separately from the valve main body 64 and may be movable in the vertical direction relative to the upper end surface of the flow path opening / closing part 59. By moving the operation part 65 downward, the valve main body 64 may move toward the second end 40b, and by releasing the downward operation of the operation part 65, the valve main body 64 may move toward the first end 40a. [Explanation of symbols]

[0072] 1, 1´ Solenoid valve assembly with stop valve 10. Solenoid valve 20 Intake and exhaust base 22 Main air supply passage 23a 1st main exhaust flow path (main exhaust flow path) 23b 2nd main exhaust flow path (main exhaust flow path) 28a 1st output port 28b Second output port 40 Stop valve module 40a 1st end 40b 2nd end 43a Upper end surface 43b Lower end face 43c 1st side (side) 43d 2nd side (side) 44 Connecting flow passages 45 Expansion section 46a Upper first exhaust port (upper opening) 46b Upper first output port (upper opening) 46c Upper air supply port (upper opening) 46d Upper second output port (upper opening) 46e Upper second exhaust port (upper opening) 48a Lower first exhaust port (lower opening) 48b Lower first output port (lower opening) 48c Lower air supply port (lower opening) 48d Lower 2nd output port (lower opening) 48e Lower second exhaust port (lower opening) 50 first exhaust communication passage (communication passage, exhaust communication passage) 51 first output communication channel (communication channel) 52 Air supply communication passage (communication passage) 52a First air supply communication passage 52b Second air supply communication passage 52c Flow passage connection part 53 Second output communication passage (communication passage, output communication passage) 54 Second exhaust communication passage (communication passage, exhaust communication passage, outermost communication passage) 55c side 55d Bottom 57 Valve seat 61 Stop valve 62 Valve hole 62b Operation hole 63 Valve body 65a Operation axis 66 Engagement groove portion (engagement portion) 67 Compression spring (spring component) 70 Locking mechanism 71 Locking plate (engaged part) 81 Sealing material 82 First exhaust passage 82a First exhaust opening 83 Second exhaust passage 83a Second exhaust opening L axis P1 open position P2 closed position P3 Lock position P4 Unlocked position

Claims

1. A solenoid valve assembly comprising: a plurality of solenoid valves; an air supply / exhaust base in which a main air supply passage and a main exhaust passage are formed; and output ports provided corresponding to the plurality of solenoid valves, the solenoid valve assembly switching a communication state between the output ports and the main air supply passage and the main exhaust passage by individually operating the plurality of solenoid valves, the solenoid valve assembly is formed by interposing a stop valve module between each of the plurality of solenoid valves and the air supply / exhaust base, the stop valve module having a stop valve capable of individually cutting off the supply of air to the solenoid valves, the stop valve module has a first end and a second end provided at both ends in a longitudinal direction, an upper end face having a plurality of upper openings and to which the solenoid valve is detachably connected, a lower end face having a plurality of lower openings and to which the air supply / exhaust base is connected, and a communication flow path group consisting of a plurality of communication flow paths that mutually communicate the plurality of upper openings with the lower openings corresponding to the upper openings, the plurality of communication passages include an air intake communication passage that communicates with the main air intake passage and supplies air to the solenoid valve, and an exhaust communication passage that communicates with the main exhaust passage and passes exhaust gas from the solenoid valve, the air supply communication passage includes a first air supply communication passage extending in the longitudinal direction and an end portion on the second end side connected to an air supply lower opening among the plurality of lower openings, and a second air supply communication passage extending in the longitudinal direction and an end portion on the second end side connected to an air supply upper opening among the plurality of upper openings, end portions of the first and second air supply communication passages on the first end side extend further toward the first end than an outermost communication passage disposed closest to the first end side among the communication passage groups, end portions of the first and second air supply communication passages on the first end side communicate with each other through a passage communication portion, The stop valve opens and closes the flow path communication portion.

2. A solenoid valve assembly with a stop valve.

2. The upper openings are arranged in a row on the upper end surface in the longitudinal direction, The plurality of lower openings are arranged in a row on the lower end surface in the longitudinal direction, The stop valve module has a first side surface and a second side surface facing each other at both ends in a short side direction, the plurality of communication flow paths other than the air supply communication flow path in the communication flow path group extend in a vertical direction between the upper opening and the lower opening, Among the plurality of communication passages, a communication passage extending in the vertical direction and arranged closer to the first end than the upper air supply opening and the lower air supply opening is arranged so as to intersect with the first and second air supply communication passages while arranging the first and second air supply communication passages on the first side surface side in a side view.

2. The solenoid valve assembly with a stop valve according to claim 1.

3. An expansion portion is formed on the first side surface of the stop valve module, the expansion portion protruding outward in a short side direction and extending in the long side direction, The first and second air supply communication passages are arranged side by side on the inner side of the expansion section in the short side direction.

3. The solenoid valve assembly with a stop valve according to claim 2.

4. the first and second air supply communication passages communicate with the lower air supply opening and the upper air supply opening via a first communication portion and a second communication portion, The second end side end portions of the first and second air supply communication passages are connected across the side surface and the bottom surface of each of the first and second communication portions.

2. The solenoid valve assembly with a stop valve according to claim 1.

5. a valve hole along an axis extending in the longitudinal direction is provided on the first end side of the stop valve module relative to the flow passage communication portion, and an end of the valve hole on the second end side is opened in the flow passage communication portion, The stop valve having a valve body provided at an end portion on the second end side is slidably accommodated in the valve hole, a valve seat that is disposed on the axis and that allows the valve body to come into contact with and separate from the stop valve as the stop valve reciprocates, the valve seat being provided in the flow passage communication portion; 3. The solenoid valve assembly with a stop valve according to claim 2.

6. the stop valve has an operating portion at an end portion on the first end side, and by operating the operating portion, the stop valve can be reciprocated in the axial direction of the valve hole between a closed position that closes the air supply communication passage and an open position that opens the air supply communication passage, Furthermore, the stop valve module has a locking mechanism that forms a locked position that prevents the stop valve from moving in the axial direction when in the closed position, and an unlocked position that allows the stop valve to move in the axial direction.

6. The solenoid valve assembly with a stop valve according to claim 5.

7. The operating portion has an operating shaft, and the operating shaft is rotatably inserted into an operating hole connected to the valve hole, the lock mechanism has an engaging portion provided on the operating shaft and an engaged portion provided in the operating hole, By rotating the operating shaft, the operating shaft can be selectively switched between the locked position in which the engaging portion and the engaged portion are engaged with each other and the unlocked position in which the engaging portion and the engaged portion are released from engagement with each other.

7. The solenoid valve assembly with a stop valve according to claim 6.

8. The stop valve is provided with a spring member that biases the stop valve in a direction to move the valve body away from the valve seat, When the operating portion is operated to the unlocked position, the stop valve is moved from the closed position to the open position by the biasing force of the spring member.

7. The solenoid valve assembly with a stop valve according to claim 6.

9. The stop valve has a seal member disposed around the axis on the first end side relative to the valve body, a first exhaust passage communicating with a portion of the air supply communication passage downstream of the valve seat and a second exhaust passage communicating with the atmosphere are connected to the valve hole, a first exhaust opening provided in the valve hole in the first exhaust flow path is disposed closer to the second end than a second exhaust opening provided in the valve hole in the second exhaust flow path, When the stop valve moves to the open position, the seal member moves between the first exhaust opening and the second exhaust opening in the valve hole to block communication between the first and second exhaust flow paths, and when the stop valve moves to the closed position, the seal member moves toward the second end side of the valve hole relative to the first exhaust opening to communicate between the first and second exhaust flow paths through the valve hole.

7. The solenoid valve assembly with a stop valve according to claim 6.

10. A stop valve module including an air supply communication passage for passing compressed air to be supplied to a fluid pressure device, an exhaust communication passage for passing exhaust air from the fluid pressure device, and a stop valve for opening and closing the air supply communication passage, the stop valve module has a first end and a second end provided at both ends in a longitudinal direction, an upper end face having a plurality of upper openings, a lower end face having a plurality of lower openings, and a communication flow passage group consisting of a plurality of communication flow passages that mutually communicate the plurality of upper openings with the lower openings corresponding to the upper openings, the communication passage group includes at least the air supply communication passage and the exhaust communication passage, the air supply communication passage includes a first air supply communication passage extending in the longitudinal direction and an end portion on the second end side connected to an air supply lower opening among the plurality of lower openings, and a second air supply communication passage extending in the longitudinal direction and an end portion on the second end side connected to an air supply upper opening among the plurality of upper openings, end portions of the first and second air supply communication passages on the first end side extend further toward the first end than an outermost communication passage disposed closest to the first end side among the communication passage groups, the first and second air supply communication passages are connected to each other via a passage communication portion; The stop valve opens and closes the flow passage communication portion. A stop valve module comprising:

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