Switching valve block assembly and air supply / exhaust block used in the same

Abstract

To provide a switching valve block assembly capable of mixedly loading switching valve blocks of different types in an air supply / exhaust block, and an air supply / exhaust block.SOLUTION: A switching valve block assembly 1 connects first and second switching valve blocks 60A, 60B having output ports 64a, 64b to a first air supply / exhaust block 10 having air supply and exhaust ports 12, 13. The first air supply / exhaust block has first air supply and first exhaust openings on one side surface, and second supply and second exhaust openings on the other side surface. The first and second air supply openings and an air supply port communicate with each other, and the first and second exhaust openings and an exhaust port communicate with each other. The centers of these openings are arranged on different axes. When the first switching valve block is connected to one side surface of the first air supply / exhaust block, air supply and exhaust flow paths are connected to the first air supply and second exhaust openings, and when the second switching valve block is connected to the other side surface of the first air supply / exhaust block, the air supply and exhaust flow paths are connected to the second air supply and second exhaust openings.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a switching valve block assembly comprising a plurality of switching valve blocks and an air supply / exhaust block for supplying and exhausting air to and from these blocks connected in a row in the width direction, and to an air supply / exhaust block used in the same. [Background technology]

[0002] A switching valve block assembly formed by connecting multiple switching valve blocks and supply and exhaust blocks in a row in the width direction is disclosed, for example, in Patent Document 1. In this switching valve block assembly, multiple switching valve blocks and supply and exhaust blocks are connected in a row in the width direction with their side surfaces abutting against each other.

[0003] An air supply opening for supplying air to the switching valve block and an exhaust opening for introducing air exhausted from the multiple switching valve blocks are formed on a pair of side surfaces facing each other in the width direction of the supply and exhaust block. The centers of these air supply openings are aligned on the same axis along the width direction and have the same shape. The centers of these exhaust openings are aligned on the same axis along the width direction and have the same shape.

[0004] However, when the capacity (flow rate size) of a switching valve block is different, the size and position of the intake opening for the air supplied from the supply / exhaust block and the exhaust opening for the air exhausted to the supply / exhaust block change, making it difficult to mount different types of switching valve blocks on a single supply / exhaust block. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2001-355755 A Summary of the Invention [Problem to be solved by the invention]

[0006] SUMMARY OF THE PRESENT EMBODIMENTS Accordingly, a technical object of the present invention is to provide a switching valve block assembly capable of mounting different types of switching valve blocks together in one supply / exhaust block, and an supply / exhaust block used therein. [Means for solving the problem]

[0007] In order to solve the above problems, a changeover valve block assembly according to the present invention is a changeover valve block assembly in which a plurality of changeover valve blocks having output ports and an intake and exhaust block having an intake and exhaust port are connected in a row along a width direction with their side surfaces abutting each other, and the changeover valve block assembly has a first end and a second end at both ends in the width direction, the intake and exhaust block having a first intake opening for discharging air and a first exhaust opening for exhausting air, which are opened on a side surface near the first end of a pair of side surfaces facing each other in the width direction, and a second intake opening and a second exhaust opening are opened on a side surface near the second end of the pair of side surfaces, the first intake opening, the second intake opening, and the intake ports are mutually communicated via an intake communication passage, the first exhaust opening, the second exhaust opening, and the exhaust ports are mutually communicated via an exhaust communication passage, and the centers of the first and second intake openings are the first and second exhaust openings are disposed on different axes extending along the width direction, and the centers of the first and second exhaust openings are disposed on different axes extending along the width direction, the multiple switching valve blocks have an air intake passage and an exhaust passage extending between both side surfaces facing each other in the width direction, and are composed of a plurality of first and second switching valve blocks selected from among first and second switching valve blocks which can selectively communicate the air intake passage and the exhaust passage with the output port, when the first switching valve block is coupled to the side surface of the first end side of the air intake and exhaust block, the air intake passage and the exhaust passage of the first switching valve block are connectable to the first air intake opening and the second exhaust opening of the air intake and exhaust block, and when the second switching valve block is coupled to the side surface of the second end side of the air intake and exhaust block, the air intake passage and the exhaust passage of the second switching valve block are connectable to the second air intake opening and the second exhaust opening of the air intake and exhaust block.

[0008] In this case, preferably, the first air supply opening and the first exhaust opening of the air supply and exhaust block are arranged at a first distance on the side surface of the first end, the second air supply opening and the second exhaust opening are arranged at a second distance different from the first distance on the side surface of the second end, and the opening area of ​​the first air supply opening is different from the opening area of ​​the second air supply opening, and the opening area of ​​the first exhaust opening is different from the opening area of ​​the second exhaust opening.

[0009] Preferably, the first and second switching valve blocks are pilot-operated switching valves, and the supply / exhaust block is selectively switchable between an external mode in which pilot air introduced from the outside is supplied to the first and / or second switching valve block, and an internal mode in which a part of the air introduced from the air supply port is supplied as pilot air to the first and / or second switching valve block, and the supply / exhaust block comprises a first switching member attached to the body in the external mode, a second switching member attached to the body in the internal mode, and a switching member formed on the body. and a mounting surface to selectively mount a switching member from the pair of side surfaces of the body, and a first and second pilot supply opening for supplying pilot air to the first and / or second switching valve block, and a first and second pilot exhaust opening for introducing pilot air discharged from the first and / or second switching valve block are opened on the pair of side surfaces of the body, and an air supply communication port communicating with the air supply port, a pilot supply communication port communicating with the first and second pilot supply openings, and a pilot exhaust communication port communicating with the first and second pilot exhaust openings are opened on the mounting surface. the first switching member has a pilot supply port which supplies pilot air and a pilot exhaust port which exhausts pilot air, and is configured, when attached to the mounting surface, to communicate between the pilot supply port and the pilot supply communication port, and between the pilot exhaust port and the pilot exhaust communication port, and to close the air supply communication port; the second switching member is configured, when attached to the mounting surface, to communicate between the air supply communication port and the pilot supply communication port, and to close the pilot exhaust communication port, so that In the external mode, pilot air supplied from the pilot supply port is supplied to the first and / or second switching valve block, and the pilot air discharged from the switching valve block to which the pilot air is supplied is discharged from the pilot discharge port, and in the internal mode, pilot air from the air supply port is supplied to the first and / or second switching valve block, and the pilot air discharged from the first and / or second switching valve block to which the pilot air is supplied is discharged through the exhaust flow path of the switching valve block.

[0010] Also, preferably, the respective centers of the first and second pilot supply openings are arranged on different axes extending along the width direction, the respective centers of the first and second pilot exhaust openings are arranged on different axes extending along the width direction, the first pilot supply opening and the first pilot exhaust opening are arranged on a side surface on the first end side at a third distance, and the second pilot supply opening and the second pilot exhaust opening are arranged on a side surface on the second end side at a fourth distance different from the third distance.

[0011] Furthermore, preferably, each of the first and second switching valve blocks has a switching valve pilot supply passage and a switching valve pilot exhaust passage extending between both side surfaces facing each other in the width direction, and when the first switching valve block is coupled to the side surface of the first end side of the supply and exhaust block, the switching valve pilot supply passage and the switching valve pilot exhaust passage of the first switching valve block are connected to the first pilot supply opening and the first pilot exhaust opening of the supply and exhaust block, and when the second switching valve block is coupled to the side surface of the second end side of the supply and exhaust block, the switching valve pilot supply passage and the switching valve pilot exhaust passage of the second switching valve block are connected to the second pilot supply opening and the second pilot exhaust opening of the supply and exhaust block.

[0012] The supply and exhaust block according to the present invention is used in the switching valve block assembly. Effect of the Invention

[0013] As described above, according to the present invention, it is possible to provide a switching valve block assembly in which different types of switching valve blocks can be mixedly mounted in one supply / exhaust block, and an supply / exhaust block used therein. [Brief description of the drawings]

[0014] [Figure 1]FIG. 2 is a front perspective view of a diverter valve block assembly according to one embodiment of the present invention; [Diagram 2] FIG. 2 is a left side perspective view of the supply and exhaust block. [Diagram 3] FIG. 4 is a right side perspective view of the supply and exhaust block. [Figure 4] FIG. 4 is a right side view of the supply and exhaust block. [Diagram 5] FIG. 4 is a left side view of the supply and exhaust block. [Figure 6] FIG. [Figure 7] FIG. 2 shows a first switching member, where FIG. 2(a) is a perspective view of the first switching member as seen from the top side, and FIG. 2(b) is a perspective view of the first switching member as seen from the bottom side. [Figure 8] 8(a) is a bottom view of the first switching member, and FIG. 8(b) is a sectional view of a portion corresponding to the portion viewed in the direction of arrows VIII-VIII in FIG. 8(a). [Figure 9] FIG. 2 shows a second switching member, where FIG. 2(a) is a perspective view of the second switching member as seen from the top side, and FIG. 2(b) is a perspective view of the second switching member as seen from the bottom side. [Figure 10] 10(a) is a bottom view of the second switching member, and FIG. 10(b) is a sectional view of a portion corresponding to the view seen from the arrow XX in FIG. 10(a). [Figure 11] FIG. 11 is a plan view of the air supply / exhaust block to explain the air flow within the air supply / exhaust block in the external pilot mode. [Figure 12] 11 is a plan view of the air supply / exhaust block to explain the flow of air within the air supply / exhaust block in the internal pilot mode. FIG. [Figure 13] FIG. 4 is a perspective view of a first switching valve block. [Figure 14] FIG. 4 is a left side view of the first switching valve block. [Figure 15] FIG. 4 is a right side view of the first switching valve block. [Figure 16] 13 is a cross-sectional view of the first switching valve block corresponding to the XV-XV arrow view in FIG. 12. [Figure 17] FIG. 11 is a cross-sectional view of a modified example of the first switching valve block. [Figure 18] FIG. 4 is a perspective view of a second switching valve block. [Figure 19] FIG. 4 is a left side view of the second switching valve block. [Figure 20] FIG. 4 is a right side view of the second switching valve block. [Figure 21] FIG. 13 is a perspective view showing a modified example of a switching valve block assembly. [Figure 22] FIG. 13 is a perspective view showing a modified example of the switching valve block. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The following describes a switching valve block assembly according to the present invention and an air supply / exhaust block used therein. In this embodiment, since the air supply / exhaust block constitutes a part of the switching valve block assembly, the air supply / exhaust block will be described in the explanation of the switching valve block assembly.

[0016] 1, the switching valve block assembly 1 is formed by arranging a first supply and exhaust block 10, a second supply and exhaust block 6, a plurality of pilot type first switching valve blocks 60A, a plurality of pilot type second switching valve blocks 60B, a first end block 90, and a second end block 95 in the width direction and integrating them. The switching valve block assembly 1 has a first end 2 and a second end 3 at both ends in the width direction, and these devices constituting the switching valve block assembly 1 are connected so as to be movable together and apart by butting their side surfaces facing in the width direction together while mounted on rails 4.

[0017] The switching valve block assembly 1 of this embodiment is configured to supply and exhaust air collectively to the multiple first switching valve blocks 60A through the air supply flow path and exhaust flow path extending from the first air supply / exhaust block 10 and the multiple first switching valve blocks 60A. Furthermore, the switching valve block assembly 1 is configured to supply and exhaust air collectively to the multiple second switching valve blocks 60B through the air supply flow path and exhaust flow path, pilot supply flow path and pilot exhaust flow path extending from the second air supply / exhaust block 6 and the multiple second switching valve blocks 60B. The air supply flow path and exhaust flow path, pilot supply flow path and pilot exhaust flow path will be described later in detail.

[0018] The first and second switching valve blocks 60A, 60B are common in that they are pilot-operated switching valves formed in a block shape, but are different in that they have different capacities (flow rate sizes). The capacity of the first switching valve block 60A is larger than that of the second switching valve block 60B. The first supply and exhaust block 10 can accommodate the first and second switching valve blocks 60A, 60B with different capacities, while the second supply and exhaust block 6 can only connect to the second switching valve block 60B. The first end block 90 has a connector 91 on its upper surface, which supplies power and electrical signals to the solenoids 76a1, 76b1 provided in the first and second switching valve blocks 60A, 60B. The second end block 95 closes the opening on the first end 2 side of the first switching valve block 60A.

[0019] Next, the devices constituting the switching valve block assembly 1 will be described. First, the first supply / exhaust block 10 will be described. As shown in Figs. 2 to 6, the first supply / exhaust block 10 can be selectively switched between an external mode in which pilot air introduced from the outside is supplied to the first and second switching valve blocks 60A, 60B, and an internal mode in which a part of the air introduced from the air supply port 12 is supplied as pilot air to the first and second switching valve blocks 60A, 60B. The first supply / exhaust block 10 has a first body 11 which is the body of the first supply / exhaust block 10, a first switching member 33 which is attached to the first body 11 in the external mode, and a second switching member 42 which is attached to the first body 11 in the internal mode.

[0020] The first body 11 is formed in a rectangular parallelepiped shape extending in the front-rear direction. An air supply port 12 and an exhaust port 13 are provided at the front end of the first body 11 with a gap between them in the vertical direction. In addition, a pair of side surfaces 14, 15 facing each other in the width direction are provided with first and second air supply openings 16, 17 for discharging air, first and second exhaust openings 18, 19 for discharging air, first and second pilot supply openings 20, 21 for supplying pilot air, and first and second pilot exhaust openings 22, 23 for discharging pilot air.

[0021] Further, a recess 24 is formed in the upper part of the first body 11, and the above-mentioned flat mounting surface 25 is formed in the bottom of this recess 24. Therefore, by mounting the first switching member 33 on the mounting surface 25, the external mode is selected, and by mounting the second switching member 42 on the mounting surface 25, the internal mode is selected.

[0022] The first air supply opening 16 and the first exhaust opening 18 opened in the side surface 14 on the first end 2 side are open to the bottom of the front side of the side surface 14. In the front-rear direction, the first air supply opening 16 is disposed horizontally forward from the first exhaust opening 18 at a distance d1 (see FIG. 4). The second air supply opening 17 and the second exhaust opening 19 opened in the side surface 15 on the second end 3 side are opened to the bottom of the center of the front-rear direction of the side surface 15. In the front-rear direction, the second air supply opening 17 is disposed horizontally forward from the second exhaust opening 19 at a distance d2 (d1>d2) (see FIG. 5). The first air supply opening 16 and the first exhaust opening 18 are formed in the shape of elongated holes that extend in the front-rear direction and open to the same size, and the second air supply opening 17 and the second exhaust opening 19 are also formed in the shape of elongated holes that extend in the front-rear direction and open to the same size. The opening area of ​​the first air supply opening 16 is larger than the opening area of ​​the second air supply opening 17 , and the opening area of ​​the first exhaust opening 18 is larger than the opening area of ​​the second exhaust opening 19 .

[0023] The centers S1 and S3 of the first and second air supply openings 16 and 17 are located on different axes J1 and J3 extending along the width direction, respectively. The centers S2 and S4 of the first and second exhaust openings 18 and 19 are also located on different axes J2 and J4 extending along the width direction, respectively.

[0024] In this embodiment, these axes J1-J4 extend parallel to the width direction without intersecting each other. Thus, the first air supply opening 16 and the first exhaust opening 18 have different opening areas relative to the second air supply opening 17 and the second exhaust opening 19, and are disposed at different positions in the front-rear direction. The first air supply opening 16 and the first exhaust opening 18 open in a concave shape relative to the side surface 14 on the first end 2 side, and the second air supply opening 17 and the second exhaust opening 19 open at the tips of cylindrical protrusions 17a, 19a protruding from the side surface 15 on the second end 3 side.

[0025] In the front-rear direction, the first pilot supply opening 20 formed in the side surface 14 on the side of the first end 2 is arranged with a distance d5 from the first exhaust opening 18 on the horizontally rearward side. Further, the first pilot exhaust opening 22 is arranged with a distance d7 upward and a distance d3 rearward with respect to the first pilot supply opening 20 (see FIG. 4). On the other hand, in the front-rear direction, the second pilot supply opening 21 formed in the side surface 15 on the side of the second end 3 is arranged with a distance d6 from the second exhaust opening 19 on the horizontally rearward side. Further, the second pilot exhaust opening 23 is arranged with a distance d8 (d8 < d7) upward and a distance d4 (d4 < d3) rearward with respect to the second pilot supply opening 21 (see FIG. 5).

[0026] Further, the first pilot supply opening 20 and the first pilot exhaust opening 22 are formed in a circular shape that opens with the same size. Also, the second pilot supply opening 21 and the second pilot exhaust opening 23 are also formed in a circular shape that opens with the same size. And the centers S5, S7 of the first and second pilot supply openings 20, 21 are arranged on different axes J5, J7 extending along the width direction. Also, the centers S6, S8 of the first and second pilot exhaust openings 22, 23 are also arranged on different axes J6, J8 extending along the width direction. In the present embodiment, these axes J5 - J8 extend parallel to each other in the width direction.

[0027] That is, the first pilot supply opening 20 and the first pilot exhaust opening 22 are arranged at different positions in the vertical and front-rear directions with respect to the second pilot supply opening 21 and the second pilot exhaust opening 23. Note that these openings 20, 22 formed in the side surface 14 on the first end side in the width direction open in a concave shape in the side surface 14, and the openings 21, 23 formed in the side surface 15 on the second end 3 side in the width direction open at the tips of the cylindrical protrusions 21a, 23a protruding from the side surface 15.

[0028] Incidentally, the recess 24 formed in the upper part of the first body 11 extends in the front-rear direction at the front-rear direction intermediate part of the upper surface of the first body 11, and is open on both sides in the width direction. The mounting surface 25 formed on the bottom surface of the recess 24 is formed to extend in a rectangular shape in a plan view. As shown in Fig. 6, the mounting surface 25 is provided with an intake communication port 25a communicating with the intake port 12, an exhaust communication port 25b communicating with the first and second exhaust openings 18, 19, a pilot supply communication port 25c communicating with the first and second pilot supply openings 20, 21, and a pilot exhaust communication port 25d communicating with the first and second pilot exhaust openings 22, 23.

[0029] The air supply communication port 25a communicates with the first air supply opening 16, the second air supply opening 17, and the air supply port 12 through the air supply communication passage 26. In this embodiment, one end of the air supply communication passage 26 communicates with the first and second air supply openings 16, 17, and the other end of the air supply communication passage 26 communicates with the air supply communication port 25a and the air supply port 12.

[0030] The exhaust communication port 25b communicates with the first exhaust opening 18, the second exhaust opening 19, and the exhaust port 13 through the exhaust communication passage 27. In this embodiment, one end of the exhaust communication passage 27 communicates with the first and second exhaust openings 18, 19, and the other end of the exhaust communication passage 27 communicates with the exhaust communication port 25b and the exhaust port 13.

[0031] Pilot supply communication port 25c communicates with first and second pilot supply openings 20, 21 through pilot supply passage 28. In the present embodiment, one end of pilot supply passage 28 communicates with first and second pilot supply openings 20, 21, and the other end of pilot supply passage 28 communicates with pilot supply communication port 25c.

[0032] Pilot exhaust communication port 25d communicates with first and second pilot exhaust openings 22, 23 through pilot exhaust passage 29. In this embodiment, one end of pilot exhaust passage 29 communicates with first and second pilot exhaust openings 22, 23, and the other end of pilot exhaust passage 29 communicates with pilot exhaust communication port 25d.

[0033] The first switching member 33 or the second switching member 42 is selectively attached to the attachment surface 25 in which these communication ports 25a-25d are formed.

[0034] 2, 6, 7, and 8, the first switching member 33 is formed in a rectangular parallelepiped shape, and has a pilot supply port 34 for introducing pilot air and a pilot discharge port 35 for discharging pilot air discharged from the first switching valve block 60A formed on its upper surface. In this embodiment, a pilot supply port 36 is inserted into the pilot supply port 34, and a pilot discharge port 37 is inserted into the pilot discharge port 35. The pilot supply port 34 is formed on the front side of the second widthwise end 3 side of the first switching member 33, and the pilot discharge port 35 is formed on the front side of the pilot supply port 34 and on the side of the first widthwise end 2.

[0035] A first supply groove 38 is formed inside the back surface side of the first switching member 33. The upper end of this first supply groove 38 communicates with the pilot supply port 34 and extends downward, and the lower end opens to the back surface of the first switching member 33. An opening 38a at the lower end of the first supply groove 38 is formed in a rectangular shape that extends in the front-rear direction and has approximately the same size as the pilot supply communication port 25c.

[0036] A first discharge groove portion 39 is formed inside the back surface side of the first switching member 33. The upper end of this first discharge groove portion 39 communicates with the pilot discharge port 35 and the lower end opens to the back surface of the first switching member 33. An opening portion 39a opening at the lower end of the first discharge groove portion 39 is formed in a rectangular shape that extends in the front-rear direction and has approximately the same size as the pilot exhaust communication port 25d.

[0037] Further, an air intake blocking portion 40 and an exhaust blocking portion 41 are formed on the back surface of the first switching member 33 to block the first air intake opening 16 and the first exhaust opening 18 formed on the mounting surface 25. These blocking portions 40, 41 close the communication openings 25a, 25b so as to surround the openings 16, 18. When the first switching member 33 is attached to the mounting surface 25, these communication openings 25a, 25b, 25c, 25d are sealed from the outside. The first switching member 33 is detachably attached to the mounting surface 25 by fastening members (screws) inserted on both sides in the front-rear direction.

[0038] When pilot air is introduced into the pilot supply port 36 with the first switching member 33 attached to the mounting surface 25 of the first supply and exhaust block 10, the pilot air is discharged from the first and second pilot supply openings 20 and 21 through the first supply groove 38, the pilot supply communication port 25c, and the pilot supply passage 28, as shown in Figs. 2 and 11. When pilot air is introduced into the first pilot exhaust opening 22, the pilot air is exhausted from the pilot exhaust port 37 through the pilot exhaust passage 29, the pilot exhaust communication port 25d, and the first exhaust groove 39. In this embodiment, the second switching valve block 60B is coupled to the side surface 15 on the second end 3 side of the first supply and exhaust block 10, and air is supplied to the second switching valve block 60B from the second supply and exhaust block 6. For this reason, in the first supply and exhaust block 10, air is discharged only from the first pilot supply opening 20.

[0039] 3, 9 and 10, the second switching member 42 is formed in a rectangular parallelepiped shape, and a second groove portion 43 that extends linearly in the front-rear direction and is open at the bottom surface is formed on the rear second end side of the lower surface of the second switching member 42. The second groove portion 43 extends so as to straddle the first air intake opening 16 and the first pilot supply opening 20, and connects these openings 16, 20 to each other.

[0040] Similarly to the first switching member 33, the second switching member 42 has an air supply blocking section 40 and an exhaust blocking section 41 formed on its back surface, and further has a pilot exhaust blocking section (blocking section) 44 that blocks the pilot exhaust communication port 25d. These blocking sections 40, 41, 44 block the communication ports 25a, 25b, 25d by surrounding the communication ports 25a, 25b, 25d. When the second switching member 42 is attached to the mounting surface 25, the communication ports 25a, 25b, 25c, 25d are sealed from the outside. The second switching member 42 is detachably attached to the mounting surface 25 of the first supply / exhaust block 10 by fastening members (screws) inserted on both sides of the second switching member 42 in the front-rear direction.

[0041] When air is introduced into the air supply port 12 with the second switching member 42 attached to the mounting surface 25, the air is discharged mainly from the first air supply opening 16 through the air supply communication passage 26, as shown in Figures 3 and 12. A part of the air is discharged mainly from the first pilot supply opening 20 as pilot air through the air supply communication passage 26, the second groove portion 43, and the pilot supply passage 28. That is, since the second switching valve block 60B, to which air is supplied from the second supply and exhaust block 6, is connected to the side surface 15 on the second end 3 side of the first supply and exhaust block 10, the air is discharged mainly from the first air supply opening 16 and the first pilot supply opening 20.

[0042] 2 and 3, a mounting hole 30 is provided in the lower part of the first body 11 rearward of the first and second pilot supply openings 20, 21, penetrating the first body 11 in the width direction. A connection board 31 for receiving an electrical signal transmitted from the first end block 90 is attached in the mounting hole 30. The connection board 31 is electrically connected to the connection board 48 provided in the first and second switch valve blocks 60A, 60B when the first and second switch valve blocks 60A, 60B are coupled to the side surfaces 14, 15 of the first supply / exhaust block 10, respectively.

[0043] Next, the first switching valve block 60A will be described. As shown in Figs. 13-16, the first switching valve block 60A includes a main valve section 61 incorporating valve bodies 62a and 62b, and a pilot valve section 75 including first and second pilot solenoid valves 76a and 76b. The main valve section 61 includes a main valve body 63, which is a body of the main valve section 61, and the main valve body 63 is formed in a rectangular parallelepiped shape extending in the front-rear direction. A port block 65 including first and second output ports 64a and 64b is attached to the front end of the main valve body 63. The pilot valve section 75 includes a pilot body 77, which is a body of the pilot valve section 75, and the pilot body 77 is connected to the rear end of the main valve body 63.

[0044] A first switching valve air supply opening 67 through which air is supplied, a first switching valve exhaust opening 68 through which air is exhausted, a first switching valve pilot supply opening 69 through which pilot air is supplied, and a first switching valve pilot exhaust opening 70 through which pilot air is exhausted are provided on a pair of side surfaces 66a, 66b, 78a, 78b facing each other in the width direction of the main valve body 63 and the pilot body 77. These openings 67-70 are connectable to the first air supply opening 16, the first exhaust opening 18, the first pilot supply opening 20, and the first pilot exhaust opening 22 that are provided on the first end 2 side in the width direction of the first supply and exhaust block 10 described above.

[0045] More specifically, as shown in Fig. 14, the first switching valve intake opening 67 and the first switching valve exhaust opening 68, which are opened in a side surface 66b on the second widthwise end 3 side of the first switching valve block 60A, open to the front lower part of the side surface 66b. Moreover, these openings 67, 68 extend in the front-rear direction, open to the same size, and are formed to be substantially the same shape as the first intake opening 16 and the first exhaust opening 18 shown in Fig. 3. Moreover, in the front-rear direction, the first switching valve intake opening 67 is disposed at a distance d1 horizontally forward of the first switching valve exhaust opening 68.

[0046] In addition, in the front-rear direction, the first switching valve pilot supply opening 69 opened in the side surface 66b is disposed horizontally rearward of the first switching valve exhaust opening 68 at a distance d5. The first switching valve pilot exhaust opening 70 is disposed at a distance d7 above the first switching valve pilot supply opening 69 and at a distance d3 rearward. The first switching valve pilot supply opening 69 and the first switching valve pilot exhaust opening 70 are formed in substantially the same circular shape as the first pilot supply opening 20 and the first pilot exhaust opening 22 shown in FIG. 3. In this embodiment, these openings 67-70 open at the tip of a cylindrical protruding portion 67a-70a (see FIG. 13) protruding from the side surface 66b on the second end 3 side.

[0047] On the other hand, the first switching valve air supply opening 67, the first switching valve exhaust opening 68, the first switching valve pilot supply opening 69, and the first switching valve pilot exhaust opening 70, which are opened on the side surface 66a on the first widthwise end 2 side of the first switching valve block 60A, are formed in the same manner as the openings 67-70, which are opened on the side surface 66b on the second widthwise end side. However, these openings 67-70 open in a concave shape on the side surface 66a.

[0048] The centers S10 of the first switching valve air supply openings 67 opened on the side surfaces 66a and 66b on both sides of the first switching valve block 60A in the width direction are disposed on the same axis J10 extending along the width direction. The centers S11 of the first switching valve exhaust openings 68 opened on the side surfaces 66a and 66b are disposed on the same axis J11 extending along the width direction. The centers S12 of the first switching valve pilot supply openings 69 opened on the side surfaces 66a and 66b are disposed on the same axis J12 extending along the width direction. The centers S13 of the first switching valve pilot exhaust openings 70 opened on the side surfaces 66a and 66b are disposed on the same axis J13 extending along the width direction.

[0049] The first switch valve intake openings 67, 67 communicate with each other through a switch valve intake communication passage 71 formed in the main valve body 63. The first switch valve exhaust openings 68, 68 communicate with each other through a switch valve exhaust communication passage 72 formed in the main valve body 63. Furthermore, the first switch valve pilot supply openings 69, 69 communicate with each other through a switch valve pilot supply passage 73 formed in the main valve body 63. The first switch valve pilot exhaust openings 70, 70 communicate with each other through a switch valve pilot exhaust passage 74 formed in the main valve body 63.

[0050] Therefore, by joining side surface 66b on the second widthwise end 3 side of first switching valve block 60A to side surface 14 on the first widthwise end 2 side of first supply and exhaust block 10 shown in Figure 4, it is possible to connect first switch valve supply opening 67, first switch valve exhaust opening 68, first switch valve pilot supply opening 69, first switch valve pilot exhaust opening 70 to first air supply opening 16, first exhaust opening 18, first pilot supply opening 20, and first pilot exhaust opening 22 opened on side surface 14 of first supply and exhaust block 10 shown in Figure 4.

[0051] The first switching valve air supply opening 67, the first switching valve exhaust opening 68, the first switching valve pilot supply opening 69, and the first switching valve pilot exhaust opening 70, which are opened on both side surfaces 66a, 66b of the first switching valve block 60A in the width direction, are the same in shape and arrangement on the side surfaces 66a, 66b. Therefore, when the multiple first switching valve blocks 60A are abutted in series in the width direction, they can be joined together with each of the openings 67-70 communicated with each other.

[0052] Next, the internal structure of the first switching valve block 60A will be described. As shown in Fig. 16, the main valve section 61 of the first switching valve block 60A is a three-port valve, and includes a main valve body 63, a piston box 100 attached to the rear end surface of the main valve body 63, and a port block 65 attached to the front end surface of the main valve body 63. The main valve body 63 is formed with a switching valve air supply communication passage 71 and a switching valve exhaust communication passage 72 that run through it in the width direction so that multiple first switching valve blocks 60A can be connected together in the width direction for use.

[0053] A valve hole 106 is formed between both front and rear end faces of the main valve body 63, penetrating along the axis L extending in the front and rear direction. The valve hole 106 is formed with a switching valve intake passage 101 located in the center in the direction of the axis L, first and second output passages 107a, 107b located on either side of the switching valve intake passage 101, and first and second exhaust passages 102, 103 located on either side of the switching valve intake passage 101 and communicating with the switching valve exhaust communication passage 72.

[0054] Valve bodies 62a, 62b are inserted into both front and rear sides of the valve hole 106 so as to be slidable along the direction of the axis L. These valve bodies 62a, 62b are configured so that the acting force of the air pressure from the switching valve air intake passage 101 serves as a return force. In addition, first and second pistons 108a, 108b are disposed on both sides of the valve hole 106 in the direction of the axis L for pressing the valve bodies 62a, 62b under the action of pilot air pressure.

[0055] The first and second output flow paths 107a, 107b are located above and below the valve hole 106. The rear ends of the first and second output flow paths 107a, 107b open to the valve hole 106, and the front ends extend forward in the direction of the axis L and communicate with the first and second output ports 64a, 64b.

[0056] A first piston chamber 100a opening toward the front side is formed in the piston box 100, and a first piston 108a having a diameter larger than that of the valve body 62a is inserted into the first piston chamber 100a so as to be slidable in the direction of the axis L. A second piston chamber 65a opening toward the rear side is formed in the port block 65, and a second piston 108b having a diameter larger than that of the valve body 62b is inserted into the second piston chamber 65a so as to be slidable in the direction of the axis L.

[0057] The main valve body 63 is formed with a first pilot supply communication passage 104a capable of supplying pilot air to the first piston chamber 100a, and a second pilot supply communication passage 104b capable of supplying pilot air to the second piston chamber 65a. When pilot air is supplied to the first piston chamber 100a, the acting force of the pilot air pressure acting on the first piston 108a having a diameter larger than that of the valve body 62a exceeds the acting force of the air from the switching valve air supply passage 101 acting on the front end face of the valve body 62a, so that the valve body 62a moves forward in the direction of the axis L. As a result, the switching valve air supply passage 101 communicates with the first output passage 107a, and air is output from the first output port 64a. On the other hand, when pilot air is discharged from the first piston chamber 100a, the pilot air pressure acting on the first piston 108a decreases and the force of the air acting on the front end face of the valve body 62a becomes greater, causing the valve body 62a to return to the rear side in the direction of the axis L. Then, when the first pilot supply communicating passage 104a communicates with the pilot exhaust passage 105, pilot air is discharged from the switching valve pilot exhaust passage 74 or the switching valve exhaust communicating passage 72. The discharge of pilot air will be described in detail later.

[0058] When pilot air is supplied to the second piston chamber 65a, the second piston 108b moves rearward, similarly to when pilot air is supplied to the first piston chamber 100a, and the switching valve air supply passage 101 and the second output passage 107b communicate with each other, and air is output from the second output port 64b. On the other hand, when the pilot air in the second piston chamber 65a is discharged, the valve body 62b returns to the front side in the direction of the axis L. Then, when the second pilot supply communication passage 104b communicates with the pilot exhaust passage 105, the pilot air is discharged from the switching valve pilot exhaust passage 74 or the switching valve exhaust communication passage 72. Details of the discharge of pilot air will be described later.

[0059] The pilot valve section 75 is provided with first and second pilot solenoid valves 76a and 76b for driving the valve bodies 62a and 62b. The first and second pilot solenoid valves 76a and 76b each include a first and second pilot inlet flow passage 79a and 79b, a first and second pilot output flow passage 80a and 80b, and a first and second pilot exhaust flow passage 81a and 81b. The first and second pilot solenoid valves 76a and 76b are configured as three-port solenoid valves that selectively switch and communicate the first and second pilot output flow passages 80a and 80b with the first and second pilot inlet flow passages 79a and 79b and the first and second pilot exhaust flow passages 81a and 81b by excitation and de-energization of the solenoids 76a1 and 76b1.

[0060] The first and second pilot inlet passages 79a, 79b communicate with the switching valve pilot supply passage 73 through a pilot input passage 109 formed across the pilot body 77 and the main valve body 63. The first pilot output passage 80a communicates with the first piston chamber 100a through a first pilot supply communication passage 104a formed across the pilot body 77 and the piston box 100. The second pilot output passage 80b communicates with the second piston chamber 65a through a second pilot supply communication passage 104b formed across the pilot body 77, the piston box 100, and the main valve body 63. The first and second pilot exhaust passages 81a, 81b communicate with each other through a pilot exhaust passage 105 formed across the pilot body 77 and the piston box 100. The pilot exhaust passage 105 communicates with the switching valve pilot exhaust passage 74 on the upstream side. The switching valve pilot exhaust passage 74 will be described in detail later.

[0061] The first switching valve block 60A in this embodiment is a switching valve in the internal mode shown in Fig. 16. The first switching valve block 60A in this embodiment is configured so that a part of the air supplied from the air supply port 12 of the first supply / exhaust block 10 is supplied as pilot air, and the pilot air exhausted from the first switching valve block 60A is exhausted to the switching valve exhaust communication passage 72.

[0062] The pilot exhaust passage 105 extends across the pilot body 77 and the piston box 100, and further extends to the first exhaust passage 102 through a gap formed between the seal member 62a2 and the valve hole 106. The seal member 62a2 is a lip-type seal member that opens toward the front, and allows air to flow from the first piston 108a side to the first exhaust passage 102 side, while preventing air from flowing from the first exhaust passage 102 side to the first piston 108a side.

[0063] Each of the first and second pilot solenoid valves 76a, 76b includes a pilot valve body 82 on the front side. The pilot valve body 82 includes the inlet valve bodies 45a, 45b and the exhaust valve bodies 46a, 46b arranged in the front-rear direction and interlocking with each other. When the solenoid 76a1 or the solenoid 76b1 is excited, the inlet valve body 45a or the inlet body 45b is opened to individually communicate the first pilot inlet flow passage 79a and the first pilot output flow passage 80a, or the second pilot inlet flow passage 79b and the second pilot output flow passage 80b. When the solenoid 76a1 or the solenoid 76b1 is excited, the exhaust valve body 46a or the exhaust valve body 46b is closed to block the flow passage from the first pilot output flow passage 80a or the second pilot output flow passage 80b to the pilot exhaust flow passage 105. As a result, pilot air is supplied to the first piston chamber 100a or the second piston chamber 65a.

[0064] When the solenoid 76a1 or 76b1 is de-energized, the inlet valve bodies 45a, 45b are closed and the exhaust valve bodies 46a, 46b are opened. Then, the flow path from the first pilot output flow path 80a or the second pilot output flow path 80b to the first pilot exhaust flow path 81a or the second pilot exhaust flow path 81b is opened, and the air supplied to the first piston chamber 100a or the second piston chamber 65a is individually discharged. As a result, the acting force of the pilot air pressure flowing from the switching valve intake communication flow path 71 through the switching valve intake flow path 101 into the valve hole 106 becomes the returning force of the valve bodies 62a, 62b, and the valve bodies 62a, 62b perform the returning operation.

[0065] As shown in Figures 14 and 15, a mounting hole 47 is provided at the rear bottom of the main valve body 63 of the first switching valve block 60A, penetrating in the width direction, and a connection board 48 for receiving an electrical signal transmitted from the first end block 90 is attached in this mounting hole 47. The connection board 48 is electrically connected to the solenoids 76a1, 76b1 of the first and second pilot solenoid valves 76a, 76b. When another first switching valve block 60A or the first supply and exhaust block 10 is coupled to the side surfaces 66a, 66b of the first switching valve block 60A, the connection boards 31, 48 of these blocks 10, 60A are electrically connected to each other.

[0066] The first switching valve block 60A described above is a switching valve for the internal mode, but the first supply / exhaust block 10 of this embodiment can also be used as a switching valve for the external mode. The first supply / exhaust block 10 for the external mode is configured to receive a portion of the air introduced from the supply port 12 as pilot air and to exhaust the supplied pilot air from the switching valve pilot exhaust flow path 74.

[0067] Here, pilot exhaust flow path 105 in the above-mentioned internal mode type first switching valve block 60A communicates with switching valve pilot exhaust flow path 74 midway, and furthermore, lip-type seal member 62a2 allows air to flow to the first exhaust flow path 102 side. For this reason, it is difficult to exhaust air from switching valve pilot exhaust flow path 74.

[0068] Therefore, in the first switching valve block 60A in the external mode, as shown in Fig. 17, an O-ring 62a3 is attached to the land portion 62a1 of the valve body 62a in place of the lip-type seal member 62a2. The O-ring 62a3 can block the flow of air at the contact portion between the O-ring 62a3 and the valve hole 106. As a result, in the external mode, the pilot air discharged from the first and second pilot solenoid valves 76a, 76b can be discharged from the switching valve pilot exhaust flow path 74.

[0069] Next, the second switching valve block 60B will be described with reference to Figures 18 to 20. The second switching valve block 60B is configured similarly to the first switching valve block 60A described above. Therefore, for the second switching valve block 60B, differences from the first switching valve block 60A will be described, and parts similar to those in the first switching valve block 60A will be given the same reference numerals and descriptions thereof will be omitted.

[0070] The second switching valve block 60B is formed smaller than the first switching valve block 60A. As shown in Fig. 2 and Fig. 18, a side surface 66a on the first end 2 side of the second switching valve block 60B has a second switching valve supply opening 51, a second switching valve exhaust opening 52, a second switching valve pilot supply opening 53, and a second switching valve pilot exhaust opening 54 that can be connected to the second air supply opening 17, the second exhaust opening 19, the second pilot supply opening 21, and the second pilot exhaust opening 23 that are opened on the side surface 15 on the second end 3 side of the first supply / exhaust block 10. In this embodiment, these openings 51-54 are opened in a concave shape on the side surface 66a.

[0071] 18 and 20, a side surface 66b on the second widthwise end 3 side of the second selector valve block 60B is provided with the same openings as the second selector valve air supply opening 51, the second selector valve exhaust opening 52, the second selector valve pilot supply opening 53 and the second selector valve pilot exhaust opening 54 which are provided on the side surface 66a on the first widthwise end 2 side of the second selector valve block 60B. In this embodiment, these openings 51-54 open at the tips of protrusions 51a-54a protruding from the side surface 66b of the second selector valve block 60B.

[0072] Next, the second supply / exhaust block 6 will be generally described. The second supply / exhaust block 6 is configured similarly to the first supply / exhaust block 10, so the same parts as those of the first supply / exhaust block 10 are denoted by the same reference numerals and their description will be omitted, and the main parts will be generally described. The second supply / exhaust block 6 differs from the first supply / exhaust block 10 in that only the second switching valve block 60B can be connected to the second supply / exhaust block 6 and that the second supply / exhaust block 6 is smaller than the first supply / exhaust block 10, as shown in FIG. 1. The second supply / exhaust block 6 has openings on both sides in the width direction that can be connected to the second intake opening 17, the second exhaust opening 19, the second pilot supply opening 21, and the second pilot exhaust opening 23 that are opened on the side 15 on the second end 3 side of the first supply / exhaust block 10 shown in FIG. 5.

[0073] Air introduced from air supply / exhaust block 6 through air supply port 12 is supplied from second supply / exhaust block 6 to the plurality of second switch valve blocks 60B, and a portion of the air is supplied to pilot valve portions 75 of the plurality of second switch valve blocks 60B. Air discharged from the plurality of second switch valve blocks 60B is returned to second supply / exhaust block 6 and discharged through exhaust port 13. Pilot air discharged from pilot valve portions 75 of the plurality of second switch valve blocks 60B is discharged through exhaust port 13 of second supply / exhaust block 6.

[0074] Next, an overview will be given of the first end block 90. ​​The first end block 90 is capable of transmitting electrical signals to the connection board portions 31, 48 provided on the first and second switching valve blocks 60A, 60B and the first supply and exhaust block 10, respectively. In addition, the side surface of the first end block 90 on the first end 2 side in the width direction is formed so as to close a plurality of openings 17, 19, 21, 23 that open on the side surfaces of the first and second supply and exhaust blocks 6, 10 on the second end 3 side in the width direction.

[0075] In this manner, the first air supply / exhaust block 10 of this embodiment has first air supply opening 16 and first exhaust opening 18 formed on side surface 14 on the first end 2 side in the width direction thereof which have different sizes and are arranged in different positions from the second air supply opening 17 and second exhaust opening 19 formed on side surface 15 on the second end 3 side, so that different first and second switching valve blocks 60A, 60B can be mounted together on the first air supply / exhaust block 10.

[0076] Next, the operation of the switching valve block assembly 1 will be described with reference to Figs. 1 to 3, 12, 16, and 17. First, the internal mode of the switching valve block assembly 1 will be described. In the internal mode, air supplied to the air supply port 12 of the supply and exhaust blocks 6 and 10 is supplied from the first air supply opening 16 to the first and second pilot solenoid valves 76a and 76b of the switching valve blocks 60A and 60B, and is selectively output from the first and second output ports 64a and 64b depending on the excitation state of the pilot solenoid valves 76a and 76b. In addition, air returned from an external device connected to the output ports 64a and 64b is exhausted from the exhaust port 13 of the supply and exhaust blocks 6 and 10 through the switching valve exhaust communication passage 72 depending on the excitation state of the pilot solenoid valves 76a and 76b.

[0077] Furthermore, a portion of the air supplied to the air supply port 12 is supplied to the pilot solenoid valves 76a, 76b of the switching valve blocks 60A, 60B from the first pilot supply opening 20. Then, depending on the excitation state of the pilot solenoid valves 76a, 76b, the air supplied to the pilot solenoid valves 76a, 76b drives the first and second pistons 108a, 108b, and is exhausted from the exhaust port 13 of the supply and exhaust blocks 6, 10 through the pilot exhaust flow path 105.

[0078] On the other hand, in the external mode, the path for outputting the air supplied to the air supply port 12 of the air supply / exhaust blocks 6, 10 from the first and second output ports 64a, 64b of the switching valve blocks 60A, 60B, and the path for exhausting the air flowing in from these output ports 64a, 64b from the exhaust port 13 of the air supply / exhaust blocks 6, 10 are the same as in the internal mode described above.

[0079] Pilot air is introduced from pilot supply port 36 of the supply and exhaust blocks 6, 10, and is supplied to pilot solenoid valves 76a, 76b of the switching valve blocks 60A, 60B from the first pilot supply opening 20. Then, depending on the excitation state of the pilot solenoid valves 76a, 76b, the pilot air supplied to the pilot solenoid valves 76a, 76b drives the first and second pistons 108a, 108b, and is exhausted from pilot exhaust port 37 of the supply and exhaust blocks 6, 10 through the switching valve pilot exhaust flow path 74.

[0080] In the above embodiment, as shown in Fig. 1, the switching valve block assembly 1 is shown in which the first and second switching valve blocks 60A, 60B are connected to the side surfaces 14, 15 of the first supply / exhaust block 10, but the present invention is not limited to this. As shown in Fig. 21, the switching valve block assembly 1' may be configured by connecting a plurality of first switching valve blocks 60A, the first supply / exhaust block 10, and a second end block 95 in this order to the side surface 14 of the first supply / exhaust block 10, and connecting the first end block 90 to the side surface 15 of the first supply / exhaust block 10. In this way, the first supply / exhaust block 10 can be used exclusively for the first switching valve block 60A, further widening the range of options for usability of the first supply / exhaust block 10.

[0081] In addition, the first and second switching valve blocks 60A, 60B in the above-mentioned embodiment are dual-type switching valve blocks having valve bodies 62a, 62b, but these first and second switching valve blocks 60A, 60B may be single-type switching valve blocks having one valve body 85, as shown in Fig. 22. The first and second switching valve blocks 60A', 60B' having this one valve body 85 have substantially the same structure as the above-mentioned first and second switching valve blocks 60A, 60B. For this reason, the first and second switching valve blocks 60A', 60B' are assigned the same reference numerals to the same parts as the first and second switching valve blocks 60A, 60B, and the description thereof will be omitted, and only the differences will be described.

[0082] In the first and second switching valve blocks 60A' and 60B', one valve element 85 is inserted in a valve hole 84 provided in a main valve body 63 so as to be slidable in the direction of the axis L. The valve element 85 moves forward in the direction of the axis L when pilot air is supplied into the first piston chamber 100a and pilot air is discharged from the second piston chamber 65a. The valve element 85 moves rearward in the direction of the axis L when pilot air is discharged from the first piston chamber 100a and pilot air is supplied into the second piston chamber 65a. As a seal member attached to a land portion 62a1 on the rear end side of the valve element 85, an O-ring 62a3 is attached in the external mode, and a lip-type seal member 62a2 with an opening on the front side is attached in the internal mode. [Explanation of symbols]

[0083] 1, 1´ Switching valve block assembly 2 1st end 3 2nd end 10 First supply and exhaust block (supply and exhaust block) 11 First Body (Body) 12 Air supply port 13 Exhaust port 14, 15, 66a, 66b side 16 First air intake opening 17 Second air intake opening 18 First exhaust opening 19 Second exhaust opening 20 First pilot supply opening 21 Second pilot supply opening 22 First pilot exhaust opening 23 Second pilot exhaust opening 25 Mounting surface 25a Air supply communication port 25c Pilot supply connection port 25d Pilot exhaust port 26 Air supply communication passage (air supply passage) 27 Exhaust communication passage (exhaust passage) 28 Pilot supply passage 29 Pilot exhaust passage 33 First switching member 34 Pilot supply port 35 Pilot outlet 42 Second switching member 60A First switching valve block (switching valve block) 60B Second switching valve block (switching valve block) 64a 1st output port (output port) 64b Second output port (output port) 71 Switching valve air supply connection passage (air supply passage) 72 Switching valve exhaust communication passage (exhaust passage) 73 Switching valve pilot supply passage 74 Switching valve pilot exhaust passage S1, S2, S3, S4, S5, S6, S7, S8, S10, S11, S12, S13 Center J1, J2, J3, J4, J5, J6, J7, J8, J10, J11, J12, J13 Axis

Claims

1. A switching valve block assembly in which a plurality of switching valve blocks each having an output port and an air supply / exhaust block each having an air supply port and an exhaust port are connected in a row along a width direction with their sides abutting each other, and the switching valve block assembly has a first end and a second end at both ends in the width direction, the supply / exhaust block has a body in which a first air supply opening for discharging air and a first exhaust opening for exhausting air are provided on a side surface of the first end of a pair of side surfaces facing each other in the width direction, and a second air supply opening and a second exhaust opening are provided on a side surface of the pair of side surfaces facing the second end, the first air supply opening, the second air supply opening, and the air supply port are mutually communicated via an air supply communication passage; the first exhaust opening, the second exhaust opening, and the exhaust port are mutually communicated via an exhaust communication passage, The respective centers of the first and second air supply openings are disposed on different axes extending along the width direction, The first and second exhaust openings have centers disposed on different axes extending along the width direction, the plurality of switching valve blocks are composed of a plurality of first and second switching valve blocks each having an air intake passage and an exhaust passage penetrating between both side surfaces facing each other in the width direction, and each of which is selected from a first and a second switching valve block capable of selectively connecting the air intake passage and the exhaust passage to the output port; when the first switching valve block is coupled to a side surface of the first end side of the supply / exhaust block, the air supply passage and the exhaust passage of the first switching valve block can be connected to the first air supply opening and the second exhaust opening of the supply / exhaust block, When the second switching valve block is coupled to a side surface of the second end side of the supply / exhaust block, the supply air flow path and the exhaust air flow path of the second switching valve block are connectable to the second supply air opening and the second exhaust air opening of the supply / exhaust block. A switching valve block assembly comprising:

2. the first air intake opening and the first exhaust opening of the air intake and exhaust block are disposed at a first distance from each other on a side surface of the first end side, the second air supply opening and the second exhaust opening are arranged at a second distance different from the first distance on a side surface on the second end side, The opening area of ​​the first air supply opening is different from the opening area of ​​the second air supply opening, The opening area of ​​the first exhaust opening is different from the opening area of ​​the second exhaust opening.

2. The diverter valve block assembly of claim 1.

3. The first and second switching valve blocks are pilot type switching valves, the air supply / exhaust block is selectively switchable between an external mode in which pilot air introduced from the outside is supplied to the first and / or second switching valve block, and an internal mode in which a portion of the air introduced from the air supply port is supplied as pilot air to the first and / or second switching valve block, the intake / exhaust block has a first switching member attached to the body in an external mode, a second switching member attached to the body in an internal mode, and a mounting surface formed on the body for selectively mounting the switching members; a first pilot supply opening for supplying pilot air to the first and / or second switching valve block, and a first pilot exhaust opening for introducing pilot air exhausted from the first and / or second switching valve block, the first and / or second pilot exhaust opening being provided on the pair of side surfaces of the body; an air supply communication port communicating with the air supply port, a pilot supply communication port communicating with the first and second pilot supply openings, and a pilot exhaust communication port communicating with the first and second pilot exhaust openings are provided in the mounting surface; the first switching member has a pilot supply port which supplies pilot air and a pilot exhaust port which exhausts pilot air, and is configured, when attached to the mounting surface, to communicate the pilot supply port with the pilot supply communication port, to communicate the pilot exhaust port with the pilot exhaust communication port, and to close the air supply communication port, the second switching member is configured to communicate between the air intake communication port and the pilot supply communication port and to close the pilot exhaust communication port when the second switching member is attached to the mounting surface, Thus, in the external mode, pilot air supplied from the pilot supply port is supplied to the first and / or second switching valve block, and pilot air discharged from the switching valve block to which the pilot air is supplied is discharged from the pilot discharge port. In the internal mode, pilot air from the air supply port is supplied to the first and / or second switching valve block, and the pilot air discharged from the first and / or second switching valve block to which the pilot air is supplied is discharged through the exhaust flow path of the switching valve block.

2. The diverter valve block assembly of claim 1.

4. The centers of the first and second pilot supply openings are disposed on different axes extending along the width direction, The first and second pilot exhaust openings have centers disposed on different axes extending along the width direction, the first pilot supply opening and the first pilot exhaust opening are disposed at a third distance from each other on a side surface of the first end, the second pilot supply opening and the second pilot exhaust opening are arranged at a fourth distance different from the third distance on a side surface on the second end side; 4. The diverter valve block assembly of claim 3.

5. Each of the first and second switching valve blocks has a switching valve pilot supply passage and a switching valve pilot exhaust passage extending between both side surfaces facing each other in a width direction, when the first switching valve block is coupled to a side surface of the first end side of the supply / exhaust block, the switching valve pilot supply passage and the switching valve pilot exhaust passage of the first switching valve block are connected to the first pilot supply opening and the first pilot exhaust opening of the supply / exhaust block, When the second switching valve block is coupled to the side surface of the second end side of the supply / exhaust block, the switching valve pilot supply passage and the switching valve pilot exhaust passage of the second switching valve block are connected to the second pilot supply opening and the second pilot exhaust opening of the supply / exhaust block.

5. The diverter valve block assembly of claim 4.

6. The supply and exhaust block used in the switching valve block assembly according to any one of claims 1 to 5.

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