Solenoid valve manifold

Abstract

The electromagnetic valve manifold of the present invention has a plurality of spacers and a plurality of pressure reducing valves. The spacers have mounting surfaces on which the bodies of the pressure reducing valves are mounted. The bodies have a first surface, a second surface, and a connecting surface connecting the first surface and the second surface. A pressure gauge is provided on the connecting surface. The width of the body is smaller than the size of the pressure gauge in the width direction of the body. The plurality of bodies includes a first body and a second body, wherein the first surface of the first body is mounted on the mounting surface, the second surface of the second body is mounted on the mounting surface of a spacer different from the spacer on which the first body is mounted, and the first body and the second body are alternately arranged side by side in the arrangement direction.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an electromagnetic valve manifold. BACKGROUND

[0002] Sometimes, an electromagnetic valve manifold is provided with an electromagnetic valve, a manifold base, and a spacer. The electromagnetic valve has a supply port. The manifold base has a supply flow path. The supply flow path supplies pressure fluid to the supply port. The spacer is interposed between the manifold base and the electromagnetic valve. Further, sometimes, the electromagnetic valve manifold is provided with a pressure reducing valve such as disclosed in Japanese Patent Laid-Open No. 5-8622. The pressure reducing valve can reduce the pressure of the pressure fluid output from the electromagnetic valve to a set pressure. The pressure reducing valve has a main body such as a rectangular block shape. The main body is mounted to the spacer.

[0003] In the electromagnetic valve manifold described above, there is a case where the manifold base, the spacer, and the main body are arranged side by side in a direction in which the electromagnetic valves are arranged in multiple in correspondence with the multiple electromagnetic valves. At this time, the width direction of each main body coincides with the direction in which the electromagnetic valves are arranged in multiple.

[0004] Each spacer has a mounting surface on which the main body is mounted. Further, each spacer has a first supply communication flow path and a second supply communication flow path. A first end of the first supply communication flow path communicates with the supply flow path. A second end of the first supply communication flow path opens toward the mounting surface. A first end of the second supply communication flow path communicates with the supply port. A second end of the second supply communication flow path opens toward the mounting surface.

[0005] The main body has a primary side flow path and a secondary side flow path. The primary side flow path communicates with the first supply communication flow path. The secondary side flow path communicates with the second supply communication flow path. Further, the main body has a first surface, a second surface, and a connecting surface. The first surface is a surface at a first end in a longitudinal direction of the main body. The second surface is a surface at a second end in the longitudinal direction of the main body. The connecting surface is a surface that connects the first surface and the second surface in the main body and extends in the longitudinal direction and a width direction of the main body.

[0006] A pressure gauge is provided at the connecting surface. The pressure gauge detects the pressure of the secondary side flow path. The pressure reducing valve reduces and adjusts the pressure of the secondary side flow path so that the pressure detected by the pressure gauge becomes a set pressure. In this way, the pressure of the pressure fluid output from the electromagnetic valve is reduced and adjusted. SUMMARY

[0007] Technical Problem to be Solved by the Invention

[0008] In order to achieve, for example, the purpose of miniaturizing the solenoid valve manifold, the width of the solenoid valve is sometimes minimized as much as possible. At this time, the widths of the manifold base, the spacer, and the main body are also minimized as much as the width of the solenoid valve. At this time, it is necessary to make the adjacent pressure gauges not interfere with each other in the direction in which the solenoid valves are arranged, and it is necessary to suppress the miniaturization of the pressure gauges in order not to deteriorate the visibility of the pressure gauges.

[0009] Solution to Technical Problem

[0010] A solenoid valve manifold of one embodiment of the present disclosure includes a plurality of solenoid valves, a plurality of manifold bases, a plurality of spacers, and a plurality of pressure reducing valves. The solenoid valves each include a supply port. The solenoid valves are arranged in parallel in one direction. The manifold bases each include a supply flow path configured to supply pressure fluid to the supply ports. The spacers are arranged between the manifold bases and the solenoid valves. The pressure reducing valves each include a rectangular block-shaped main body attached to the spacers and configured to reduce the pressure of pressure fluid output from the solenoid valves. The manifold bases, the spacers, and the main bodies are arranged in parallel in the parallel direction of the solenoid valves. The width direction of each of the main bodies coincides with the parallel direction. Each of the spacers includes an attachment surface to which the main body is attached, a first supply communication flow path having a first end in communication with the supply flow path and a second end opening to the attachment surface, and a second supply communication flow path having a first end in communication with the supply port and a second end opening to the attachment surface. Each of the main bodies includes a primary side flow path in communication with the first supply communication flow path, a secondary side flow path in communication with the second supply communication flow path, a first surface at a first end of the main body in the longitudinal direction, a second surface at a second end of the main body in the longitudinal direction, and a connection surface connecting the first surface and the second surface and extending in the longitudinal direction and the width direction. The connection surface includes a pressure gauge configured to detect the pressure of the secondary side flow path. The width of the main body is smaller than the size of the pressure gauge in the width direction. The pressure reducing valves are configured to reduce the pressure of the secondary side flow path to a set pressure detected by the pressure gauge, thereby reducing the pressure of pressure fluid output from the solenoid valves. The primary side flow path and the secondary side flow path each extend through the main body in the longitudinal direction and each include a first opening opening to the first surface and a second opening opening to the second surface. The pressure gauge protrudes from the connection surface in a state of being offset from the connection surface toward the first surface in the longitudinal direction. The plurality of main bodies includes a first main body and a second main body. The first surface of the first main body is attached to the attachment surface. The second surface of the second main body is attached to the attachment surface of a spacer different from the spacer to which the first main body is attached. The first main body and the second main body are alternately arranged in parallel in the parallel direction. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 FIG. 1 is a cross-sectional view of a solenoid valve manifold of an embodiment.

[0012] Figure 2 FIG. 1 is a cross-sectional view of a solenoid valve manifold of an embodiment. Figure 1 FIG. 1 is a cross-sectional view of a solenoid valve manifold of an embodiment.

[0013] Figure 3 It means Figure 1 A cross-sectional view of the pressure reducing valve in the solenoid valve manifold.

[0014] Figure 4 yes Figure 3 Top view of the pressure reducing valve.

[0015] Figure 5 It is Figure 3 The front view of the pressure reducing valve when viewed from the first side of the main body.

[0016] Figure 6 It is Figure 3 The front view of the pressure reducing valve when viewed from the second side of the main body.

[0017] Figure 7 It means Figure 3 The pressure reducing valve core is shown in a cross-sectional view in the open position. Detailed Implementation

[0018] The following is based on Figures 1 to 7 This describes one implementation method of a solenoid valve manifold.

[0019] <Overall structure of solenoid valve manifold 10>

[0020] like Figure 1 and Figure 2 As shown, the solenoid valve manifold 10 includes multiple solenoid valves 11, multiple manifold bases 30, multiple spacers 40, and multiple pressure reducing valves 50. The multiple solenoid valves 11 are arranged side-by-side in one direction. The spacers 40 are located between the manifold bases 30 and the solenoid valves 11. The manifold bases 30, spacers 40, and pressure reducing valves 50 are arranged side-by-side with the solenoid valves 11 in the same direction. Therefore, the side-by-side direction of each of the manifold bases 30, spacers 40, and pressure reducing valves 50 is consistent with the side-by-side direction of the solenoid valves 11.

[0021] <Structure of Solenoid Valve 11>

[0022] like Figure 1 As shown, each solenoid valve 11 has a valve housing 12. The valve housing 12 is a rectangular block. The valve housing 12 has a main body 13, a first connecting block 14, and a second connecting block 15. The main body 13 is a rectangular block. The first connecting block 14 is connected to the first end of the main body 13 along its long side. The second connecting block 15 is connected to the second end of the main body 13 along its long side. The main body 13 has a main body facing surface 13a, which faces the spacer 40.

[0023] <Valve Hole 16>

[0024] The valve housing 12 has a valve hole 16. The valve hole 16 is formed in the housing main body 13. The valve hole 16 is a circular hole. The valve hole 16 extends in the longitudinal direction of the housing main body 13. The first end of the valve hole 16 opens toward the first end surface of the housing main body 13 in the longitudinal direction. The second end of the valve hole 16 opens toward the second end surface of the housing main body 13 in the longitudinal direction. Thus, the valve hole 16 penetrates the housing main body 13 in the longitudinal direction.

[0025] <Spool 17>

[0026] Each electromagnetic valve 11 has a spool 17. The spool 17 is housed in the valve hole 16. The spool 17 is housed in the valve hole 16 in a state in which the axial direction of the spool 17 coincides with the axial direction of the valve hole 16. The spool 17 is housed so as to be movable back and forth in the valve hole 16.

[0027] <Each port of electromagnetic valve 11>

[0028] Each electromagnetic valve 11 has a supply port P, a first output port A, a second output port B, a first discharge port R1, and a second discharge port R2. Thus, each electromagnetic valve 11 of the present embodiment is a 5-port electromagnetic valve. The supply port P, the first output port A, the second output port B, the first discharge port R1, and the second discharge port R2 are formed in the housing main body 13. The supply port P, the first output port A, the second output port B, the first discharge port R1, and the second discharge port R2 respectively communicate with the valve hole 16.

[0029] In order from the first end of the housing main body 13 toward the second end, the first discharge port R1, the first output port A, the supply port P, the second output port B, and the second discharge port R2 are arranged in this order. The first end of each of the supply port P, the first output port A, the second output port B, the first discharge port R1, and the second discharge port R2 communicates with the valve hole 16. The second end of each of the supply port P, the first output port A, the second output port B, the first discharge port R1, and the second discharge port R2 opens toward the main body opposite surface 13a of the housing main body 13.

[0030] <First and second pistons 18 and 19>

[0031] Each electromagnetic valve 11 has a first piston 18 and a second piston 19. The first piston 18 is a circular plate. The first piston 18 is coupled to the first end of the spool 17. The first piston 18 moves integrally with the spool 17. The second piston 19 is a circular plate. The second piston 19 is coupled to the second end of the spool 17. The second piston 19 moves integrally with the spool 17.

[0032] <First pilot pressure acting chamber 21>

[0033] A first piston housing recess 20 in a circular hole shape is formed in the first link block 14. A first piston 18 that is movable back and forth is housed in the first piston housing recess 20. The first piston housing recess 20 and the first piston 18 thereby divide a first pilot pressure acting chamber 21. In the first pilot pressure acting chamber 21, a pilot fluid is supplied and discharged.

[0034] <Second Pilot Pressure Acting Chamber 23>

[0035] A second piston housing recess 22 in a circular hole shape is formed in the second link block 15. A second piston 19 that is movable back and forth is housed in the second piston housing recess 22. The second piston housing recess 22 and the second piston 19 thereby divide a second pilot pressure acting chamber 23. In the second pilot pressure acting chamber 23, a pilot fluid is supplied and discharged.

[0036] <First Pilot Valve V1 and Second Pilot Valve V2>

[0037] Each solenoid valve 11 is provided with a first pilot valve V1 and a second pilot valve V2. Therefore, the solenoid valve 11 is a pilot solenoid valve of a double solenoid type. The application of voltage to the first pilot valve V1 and the second pilot valve V2 is performed, for example, by an external control device such as a programmable logic controller (PLC) that is not shown.

[0038] <First Position and Second Position of Spool 17>

[0039] The spool 17 is switchable between a first position and a second position. For example, voltage application to the first pilot valve V1 is set, and voltage application to the second pilot valve V2 is stopped. In this way, by the first pilot valve V1, compressed fluid from a fluid supply source that is not shown is supplied to the first pilot pressure acting chamber 21 as a pilot fluid. On the other hand, by the second pilot valve V2, the pilot fluid in the second pilot pressure acting chamber 23 is discharged to the atmosphere. In this way, the spool 17 moves toward the second piston housing recess 22. As a result, the spool 17 is switched to the first position that communicates the supply port P with the first output port A and communicates the second output port B with the second discharge port R2. When the spool 17 is switched to the first position, the supply port P and the second output port B are blocked, and the first output port A and the first discharge port R1 are also blocked.

[0040] Further, for example, the application of the stop voltage to the first pilot valve V1 is set, and the application of the voltage to the second pilot valve V2 is set. Then, by the second pilot valve V2, the compressed fluid from the fluid supply source is supplied to the second pilot pressure acting chamber 23 as the pilot fluid. On the other hand, by the first pilot valve V1, the pilot fluid in the first pilot pressure acting chamber 21 is discharged to the atmosphere. In this way, the spool 17 moves toward the first piston housing recess 20. As a result, the spool 17 is switched to the second position that communicates the supply port P with the second output port B and communicates the first output port A with the first discharge port R1. When the spool 17 is switched to the second position, the supply port P and the first output port A are blocked, and the second output port B and the second discharge port R2 are also blocked.

[0041] Therefore, by the supply and discharge of the pilot fluid to the first pilot pressure acting chamber 21 by the first pilot valve V1 and the supply and discharge of the pilot fluid to the second pilot pressure acting chamber 23 by the second pilot valve V2, the spool 17 moves back and forth in the valve hole 16 between the first position and the second position. By the switching of the spool 17 between the first position and the second position, it is possible to switch the communication between the ports. Figure 1 is a state in which the spool 17 is positioned at the second position.

[0042] <Structure of manifold base 30>

[0043] Each manifold base 30 is a rectangular block. Each manifold base 30 has a mounting surface 30a. The solenoid valve 11 is mounted on the mounting surface 30a with the spacer 40 interposed. The long direction of each manifold base 30 coincides with the long direction of the valve housing 12.

[0044] Each manifold base 30 has a supply flow path 31, a first output flow path 32, a second output flow path 33, a first discharge flow path 34, and a second discharge flow path 35. The supply flow path 31, the first output flow path 32, the second output flow path 33, the first discharge flow path 34, and the second discharge flow path 35 all open to the mounting surface 30a.

[0045] The end portion of the supply flow path 31 on the side opposite to the mounting surface 30a is connected to the fluid supply source not shown by, for example, a pipe or the like. The end portion of the first output flow path 32 on the side opposite to the mounting surface 30a and the end portion of the second output flow path 33 on the side opposite to the mounting surface 30a are respectively connected to the fluid pressure device not shown by, for example, a pipe or the like. The end portion of the first discharge flow path 34 on the side opposite to the mounting surface 30a and the end portion of the second discharge flow path 35 on the side opposite to the mounting surface 30a are respectively communicated to the atmosphere.

[0046] <Structure of spacer 40>

[0047] Each spacer 40 is a rectangular block. Each spacer 40 has a first opposing surface 40a facing the valve housing 12 and a second opposing surface 40b facing the manifold base 30. The long side direction of each spacer 40 is consistent with the long side direction of the valve housing 12.

[0048] Each spacer 40 has a mounting surface 41. The mounting surface 41 is an end face located at one end of the spacer 40 in the long side direction. Each spacer has a first supply connection flow path 42, a second supply connection flow path 43, a first output connection flow path 44, a second output connection flow path 45, a first discharge connection flow path 46, and a second discharge connection flow path 47.

[0049] In the first supply connection path 42, the first end is connected to the supply path 31, and the second end is open on the mounting surface 41. In the second supply connection path 43, the first end is connected to the supply port P, and the second end is open on the mounting surface 41. The opening position of the second supply connection path 43 on the mounting surface 41 is closer to the first opposing surface 40a than the opening position of the first supply connection path 42 on the mounting surface 41.

[0050] First output connection path 44 connects first output path 32 and first output port A. Second output connection path 45 connects second output path 33 and second output port B. First discharge connection path 46 connects first discharge path 34 and first discharge port R1. Second discharge connection path 47 connects second discharge path 35 and second discharge port R2.

[0051] <First sealing member 48 and second sealing member 49>

[0052] The solenoid valve manifold 10 includes a first sealing member 48 and a second sealing member 49. The first sealing member 48 seals the spacer 40 between itself and the manifold base 30. The first sealing member 48 is, for example, a thin plate-shaped gasket. The second sealing member 49 seals the spacer 40 between itself and the valve housing 12. The second sealing member 49 is, for example, a thin plate-shaped gasket.

[0053] <Structure of pressure reducing valve 50>

[0054] Each pressure reducing valve 50 has a rectangular block-shaped body 51. Each body 51 is mounted on each spacer 40. Specifically, each body 51 is mounted on the mounting surface 41 of each spacer 40. Therefore, each body 51 is mounted on the mounting surface 41 of each spacer 40. Figure 2 As shown, the manifold base 30, spacer 40, and main body 51 are arranged side-by-side with a plurality of solenoid valves 11 in the same direction as the solenoid valves 11. The width direction of each main body 51 is consistent with the direction of the solenoid valves 11. Figure 2 The width direction of each main body 51 is indicated by arrow X1.

[0055] <Surface 1 51a, Surface 2 51b and Connecting Surface 51c>

[0056] like Figure 1 As shown, each main body 51 has a first surface 51a, a second surface 51b, and a connecting surface 51c. The first surface 51a is the surface located at the first end of the main body 51 in the long side direction. The second surface 51b is the surface located at the second end of the main body 51 in the long side direction. The connecting surface 51c is the surface that connects the first surface 51a and the second surface 51b and extends in both the long side direction and the width direction of the main body 51.

[0057] <Primary side flow path 52 and secondary side flow path 53>

[0058] Each main body 51 has a primary side flow path 52 and a secondary side flow path 53. The primary side flow path 52 and the secondary side flow path 53 each penetrate the main body 51 along their long side. Each of the primary side flow path 52 and the secondary side flow path 53 has a first opening opening towards the first surface 51a and a second opening opening towards the second surface 51b. The secondary side flow path 53 is located closer to the connecting surface 51c than the primary side flow path 52. The primary side flow path 52 is connected to the first supply connection flow path 42. The secondary side flow path 53 is connected to the second supply connection flow path 43.

[0059] <Pressure reducing valve port 54 and valve seat 55>

[0060] like Figure 3 As shown, the pressure reducing valve 50 has a pressure reducing valve orifice 54. The pressure reducing valve orifice 54 is formed in the body 51. The pressure reducing valve orifice 54 connects the primary side flow path 52 and the secondary side flow path 53. The body 51 has a valve seat 55. The valve seat 55 is formed around the portion of the pressure reducing valve orifice 54 that opens toward the primary side flow path 52 and is formed in the body 51.

[0061] <Pressure reducing valve core 56>

[0062] The pressure reducing valve 50 has a pressure reducing valve core 56. The pressure reducing valve core 56 opens and closes the pressure reducing valve orifice 54. The pressure reducing valve core 56 is disposed within the primary side flow path 52. The pressure reducing valve core 56 moves back and forth in a manner that contacts and separates from the valve seat 55. The pressure reducing valve core 56 is integrally constructed by lining a metal spring bearing with rubber. The pressure reducing valve core 56 is received within the body 51 through a hole 57 opening toward a surface in the body 51 opposite to the connecting surface 51c. The hole 57 is sealed by a bolt 58.

[0063] The pressure reducing valve spool 56 is away from the valve seat 55 in the open valve state. By making the pressure reducing valve spool 56 in the open valve state, the communication between the primary side flow path 52 and the secondary side flow path 53 via the pressure reducing valve hole 54 is allowed. On the other hand, the pressure reducing valve spool 56 is seated to the valve seat 55 in the closed valve state. By making the pressure reducing valve spool 56 in the closed valve state, the communication between the primary side flow path 52 and the secondary side flow path 53 via the pressure reducing valve hole 54 is blocked.

[0064] <Return spring 59>

[0065] The pressure reducing valve 50 has a return spring 59. The return spring 59 is interposed between the pressure reducing valve spool 56 and the peg 58. The return spring 59 applies a force to the pressure reducing valve spool 56 toward the valve seat 55. Thus, the return spring 59 applies a force to the pressure reducing valve spool 56 toward the direction in which the pressure reducing valve spool 56 is closed.

[0066] <Piston housing hole 60>

[0067] The main body 51 has a piston housing hole 60. A first end of the piston housing hole 60 is open toward the connection surface 51c of the main body 51. A second end of the piston housing hole 60 communicates with the secondary side flow path 53. An axis of the piston housing hole 60 coincides with an axis of the pressure reducing valve hole 54.

[0068] <Pressure reducing piston 61>

[0069] The pressure reducing valve 50 has a pressure reducing piston 61. The pressure reducing piston 61 is housed in the piston housing hole 60. The pressure reducing piston 61 is movable back and forth in the piston housing hole 60. The pressure reducing piston 61 has a piston main body portion 62 and a piston shaft portion 63. The piston shaft portion 63 protrudes from an end surface of the piston main body portion 62 that faces the secondary side flow path 53. A front end of the piston shaft portion 63 penetrates the inside of the pressure reducing valve hole 54 and abuts against the pressure reducing valve spool 56. The pressure reducing piston 61 is movable back and forth in an integrated manner with the pressure reducing valve spool 56 in a state in which the front end of the piston shaft portion 63 abuts against the pressure reducing valve spool 56. An end surface of the piston main body portion 62 that faces the secondary side flow path 53 is a pressure receiving surface 61a that receives the pressure of the secondary side flow path 53. Thus, the pressure reducing piston 61 receives the pressure of the secondary side flow path 53 and is movable back and forth in an integrated manner with the pressure reducing valve spool 56. The piston main body portion 62 and the piston housing hole 60 are sealed by a seal 64.

[0070] <Case 65>

[0071] The pressure reducing valve 50 has a case 65. The case 65 is cylindrical. The case 65 is attached to the connection surface 51c by a screw 66. The inside of the case 65 communicates with the piston housing hole 60. The case 65 is attached to the connection surface 51c of the main body 51 in a state in which an axis of the case 65 coincides with an axis of the piston housing hole 60.

[0072] <Nut 67 and spring support member 68>

[0073] The pressure reducing valve 50 has a nut 67. The nut 67 is housed in the inside of the case 65. The nut 67 is fixed to the inside of the case 65 and the inner peripheral surface of the case 65. The pressure reducing valve 50 has a spring support member 68. The spring support member 68 is a circular plate. The spring support member 68 is housed in the inside of the case 65. The spring support member 68 is movable back and forth in the inside of the case 65. In the inside of the case 65, the spring support member 68 is disposed closer to the piston housing hole 60 than the nut 67.

[0074] <Pressure Reducing Spring 69>

[0075] The pressure reducing valve 50 has a pressure reducing spring 69. The pressure reducing spring 69 is housed in the inside of the case 65. The pressure reducing spring 69 is interposed between the spring support member 68 and the pressure reducing piston 61. The pressure reducing spring 69 applies a force to the pressure reducing piston 61 toward the pressure reducing spool 56. When the pressure reducing piston 61 is moved toward the pressure reducing spool 56 by the pressure of the pressure reducing spring 69, the pressure reducing spool 56 is pressed. In this way, the pressure reducing spool 56 is moved in a direction away from the valve seat 55. As a result, the pressure reducing spool 56 is brought to an open valve state. Therefore, the pressure reducing spring 69 applies a force to the pressure reducing piston 61 in the open valve direction of the pressure reducing spool 56.

[0076] <Valve Stick 70>

[0077] The pressure reducing valve 50 has a valve stick 70. In the inside of the case 65, the valve stick 70 is disposed farther from the pressure reducing piston 61 than the spring support member 68. The valve stick 70 has an external thread portion 71 and a locking portion 72. The external thread portion 71 is screwable with the nut 67. The front end of the external thread portion 71 abuts against the spring support member 68. The locking portion 72 is, for example, a quadrangular column. The locking portion 72 protrudes from the external thread portion 71 toward the side opposite to the spring support member 68.

[0078] <Pressure Reducing Knob 73>

[0079] The pressure reducing valve 50 has a pressure reducing knob 73. The pressure reducing knob 73 has an operation portion 74 and a locked portion 75. The operation portion 74 has an end portion 74a and a cylindrical portion 74b. The end portion 74a is a circular plate. The end portion 74a closes an opening of the case 65 on the side opposite to the connecting surface 51c. The cylindrical portion 74b covers the end portion of the outer peripheral surface of the case 65 on the side opposite to the connecting surface 51c.

[0080] The locked portion 75 is a cylinder. The locked portion 75 protrudes from the inner surface of the end portion 74a. The locked portion 75 has an insertion hole 75a. The insertion hole 75a is, for example, a quadrangular hole. By inserting the locking portion 72 in the insertion hole 75a, the locking portion 72 is locked with the locked portion 75.

[0081] The pressure reducing knob 73 is rotatable with respect to the case 65. When the pressure reducing knob 73 is rotated with respect to the case 65, the valve rod 70 is rotated integrally with the pressure reducing knob 73 by the engagement of the engaging portion 72 with the engaged portion 75.

[0082] At this time, the external thread portion 71 is screwed with the nut 67. Therefore, for example, when the pressure reducing knob 73 is rotated in the positive direction, the valve rod 70 is screwed into the nut 67. Then, the spring support member 68 is pressed by the valve rod 70 screwed into the nut 67, so that the spring support member 68 is moved toward the pressure reducing piston 61. In this way, since the distance between the spring support member 68 and the pressure reducing piston 61 is reduced, the spring force of the pressure reducing spring 69 is increased by the compression of the pressure reducing spring 69.

[0083] On the other hand, for example, when the pressure reducing knob 73 is rotated in the reverse direction, the valve rod 70 is screwed out of the nut 67. Then, the spring support member 68 is moved away from the pressure reducing piston 61 by the elongation of the pressure reducing spring 69. In this way, since the distance between the spring support member 68 and the pressure reducing piston 61 is increased, the spring force of the pressure reducing spring 69 is decreased by the elongation of the pressure reducing spring 69.

[0084] As described above, the spring force of the pressure reducing spring 69 is adjusted, so that the spring pressure of the pressure reducing spring 69, which exerts a force in the direction in which the pressure reducing piston 61 opens the valve of the pressure reducing spool 56, is adjusted. Therefore, the pressure reducing knob 73 is operated to adjust the spring pressure of the pressure reducing spring 69. The pressure reducing knob 73 is configured to be switchable between a rotatable position in which the pressure reducing knob 73 is rotatable with respect to the case 65 and a non-rotatable position in which the pressure reducing knob 73 is not rotatable with respect to the case 65.

[0085] <Pressure Gauge 80>

[0086] The solenoid valve manifold 10 is provided with a pressure gauge 80. The pressure gauge 80 detects the pressure of the secondary side flow path 53. The pressure gauge 80 is provided to the connection face 51c of the main body 51. Therefore, the pressure gauge 80 that detects the pressure of the secondary side flow path 53 is provided to the connection face 51c. The mounting hole 81 in which the pressure gauge 80 is mounted is formed in the main body 51. The first end of the mounting hole 81 opens toward the connection face 51c. The second end of the mounting hole 81 communicates with the secondary side flow path 53. The sensor portion of the pressure gauge 80 faces the secondary side flow path 53 via the mounting hole 81. A part of the pressure gauge 80 protrudes outward from the mounting hole 81. Therefore, the pressure gauge 80 protrudes from the connection face 51c.

[0087] As Figure 4As shown, the pressure gauge 80 has a display section 80a. The display section 80a displays the pressure of the secondary side flow path 53. The display section 80a of the pressure gauge 80 extends relative to the main body 51 in the width direction of the main body 51. Therefore, the width H1 of the main body 51 is smaller than the dimension H2 of the pressure gauge 80 in the width direction of the main body 51. The pressure gauge 80 protrudes from the connecting surface 51c in a state where its center portion is offset towards the first surface 51a in the long side direction relative to the connecting surface 51c. When viewed from above facing the connecting surface 51c, the pressure gauge 80 is positioned on the connecting surface 51c in a state where it is close to the pressure reducing knob 73 in the long side direction of the main body 51. Therefore, when viewed from above facing the connecting surface 51c, the pressure reducing knob 73 is positioned on the connecting surface 51c in a state where it is close to the pressure gauge 80 in the long side direction of the main body 51.

[0088] <First pad 91 and second pad 92>

[0089] like Figure 5 and Figure 6 As shown, the solenoid valve manifold 10 includes a first gasket 91 and a second gasket 92. The first gasket 91 is mounted on a first surface 51a. The first gasket 91 seals between the first opening of the primary flow path 52 and the first opening of the secondary flow path 53. The second gasket 92 is mounted on a second surface 51b. The second gasket 92 seals between the second opening of the primary flow path 52 and the second opening of the secondary flow path 53. The first gasket 91 and the second gasket 92 are of the same shape.

[0090] <Subject 1 51A and Subject 2 51B>

[0091] like Figure 2 As shown, the plurality of main bodies 51 include a first main body 51A and a second main body 51B. The first surface 51a of the first main body 51A is mounted on the mounting surface 41 of the spacer 40. The primary flow path 52 of the first main body 51A communicates with the first supply connection flow path 42 through a first opening provided in the first surface 51a. The secondary flow path 53 of the first main body 51A communicates with the second supply connection flow path 43 through a first opening provided in the first surface 51a. A sealing member 93 is mounted on the second surface 51b of the first main body 51A. The sealing member 93 mounted on the second surface 51b of the first main body 51A closes the primary flow path 52 and the secondary flow path 53 opening towards the second surface 51b of the first main body 51A.

[0092] The second face 51b of the second body 51B is attached to the attachment face 41 of the spacer 40 different from the spacer 40 to which the first body 51A is attached. The primary side flow path 52 of the second body 51B is communicated with the first supply communication flow path 42 through the second opening provided in the second face 51b. The secondary side flow path 53 of the second body 51B is communicated with the second supply communication flow path 43 through the opening provided in the second face 51b. The sealing member 93 is provided in the first face 51a of the second body 51B. The sealing member 93 attached to the first face 51a of the second body 51B seals the primary side flow path 52 and the secondary side flow path 53 which open to the first face 51a of the second body 51B.

[0093] The first body 51A and the second body 51B are alternately arranged side by side in the arrangement direction of the electromagnetic valve 11. When viewed from the side of the connection face 51c, the pressure gauges 80 provided in the first body 51A and the pressure gauges 80 provided in the second body 51B are arranged in a pattern of a thousand cranes. When viewed from the side of the connection face 51c, the pressure reducing knobs 73 provided in the first body 51A and the pressure reducing knobs 73 provided in the second body 51B are arranged in a pattern of a thousand cranes.

[0094] <Effects>

[0095] Next, the effects of the present embodiment will be described.

[0096] As Figure 7 shown, when the pressure of the secondary side flow path 53 is lower than the set pressure, the pressure reducing spring 69 presses the pressure reducing piston 61 against the pressure of the secondary side flow path 53 acting on the pressure receiving face 61a of the pressure reducing piston 61. In this way, the pressure reducing spool 56 moves in a direction away from the valve seat 55. As a result, the pressure reducing spool 56 is in an open valve state. When the pressure reducing spool 56 is in the open valve state, the pressure fluid from the supply flow path 31 is supplied to the supply port P via the first supply communication flow path 42, the primary side flow path 52, the pressure reducing valve hole 54, and the secondary side flow path 53. Therefore, the supply flow path 31 supplies the pressure fluid to the supply port P.

[0097] When the pressure fluid flows from the primary side flow path 52 to the secondary side flow path 53 through the pressure reducing valve hole 54, the pressure of the secondary side flow path 53 gradually rises. In addition, the pressure received by the pressure receiving face 61a of the pressure reducing piston 61 rises, thereby moving the pressure reducing piston 61 toward the spring support member 68. Further, the pressure reducing spool 56 is moved toward the valve seat 55 by the urging force of the return spring 59. Then, when the pressure of the secondary side flow path 53 reaches the set pressure, the pressure reducing spool 56 seats in the valve seat 55 and is in a closed valve state. In this way, the pressure of the secondary side flow path 53 becomes the set pressure.

[0098] When the spool 17 is switched to the first position, the pressure fluid supplied to the supply port P is output to the fluid pressure device via the first output port A, the first output communication passage 44, and the first output passage 32. Then, the pressure fluid from the fluid pressure device is discharged to the outside via the second output passage 33, the second output communication passage 45, the second output port B, the second discharge port R2, the second discharge communication passage 47, and the second discharge passage 35.

[0099] On the other hand, when the spool 17 is switched to the second position, the pressure fluid supplied to the supply port P is output to the fluid pressure device via the second output port B, the second output communication passage 45, and the second output passage 33. Then, the pressure fluid from the fluid pressure device is discharged to the outside via the first output passage 32, the first output communication passage 44, the first output port A, the first discharge port Rl, the first discharge communication passage 46, and the first discharge passage 34.

[0100] The pressure fluid output from the electromagnetic valve 11 is adjusted to a set pressure by the pressure reducing valve 50. In this way, the pressure reducing valve 50 reduces the pressure of the pressure fluid output from the electromagnetic valve 11 to the set pressure.

[0101] The operator operates the pressure reducing knob 73 to perform an operation of adjusting the spring force of the pressure reducing spring 69 so that the pressure reducing spool 56 assumes a valve-closed state when the pressure of the secondary-side passage 53 becomes the set pressure. This operation of adjusting the spring force of the pressure reducing spring 69 by the operator is performed in such a manner that the operator operates the pressure reducing knob 73 while confirming the pressure detected by the pressure gauge 80. In this way, the pressure reducing valve 50 reduces the pressure of the secondary-side passage 53 to the set pressure so that the pressure detected by the pressure gauge 80 is reduced, thereby reducing the pressure of the pressure fluid output from the electromagnetic valve 11.

[0102] <Effects>

[0103] The above-described embodiment can achieve the following effects.

[0104] (1) The first body 51A and the second body 51B are alternately arranged side by side in the arrangement direction of the electromagnetic valves 11. In this way, even if the pressure gauges 80 project toward the width direction of the bodies 51 with respect to the bodies 51, the pressure gauges 80 adjacent in the arrangement direction of the electromagnetic valves 11 do not interfere with each other. Therefore, even if the width H1 of the body 51 is smaller than the dimension H2 of the pressure gauges 80 in the width direction of the body 51, a plurality of bodies 51 can be arranged in the arrangement direction of the electromagnetic valves 11. Further, even if the size of the pressure gauges 80 is not reduced, a plurality of bodies 51 can be arranged in the arrangement direction of the electromagnetic valves 11. Specifically, the display portions 80a of the pressure gauges 80 can be arranged in the arrangement direction of the electromagnetic valves 11 even if they project toward the width direction of the bodies 51 with respect to the bodies 51. Therefore, since the pressure gauges 80 do not need to be reduced in size, the visibility of the pressure gauges 80 is improved. As a result, the visibility of the pressure gauges 80 can be improved, and the size of the electromagnetic valve manifold 10 can be reduced.

[0105] (2) The first gasket 91 and the second gasket 92 are the same shape. In this way, since the first gasket 91 and the second gasket 92 are made of the same member, the structure of the electromagnetic valve manifold 10 can be simplified.

[0106] (3) The pressure reducing knob 73 is arranged at the connecting surface 51c in a state in which it is in close proximity to the pressure gauges 80 in the longitudinal direction of the body 51. In this way, the operator can easily operate the pressure reducing knob 73 while confirming the pressure gauges 80. Therefore, the operability can be improved.

[0107] (4) Since the first body 51A and the second body 51B can be made of the same structure, the cost can be reduced compared to a case in which the first body 51A and the second body 51B are made of different structures, respectively.

[0108] <Modification Example>

[0109] The above embodiment can be modified as follows. The above embodiment and the following modification example can be implemented in combination with each other within a range in which they do not contradict each other in terms of technology.

[0110] In the embodiment, the first gasket 91 and the second gasket 92 can also be different shapes from each other. In short, the first gasket 91 does not need to be particularly limited as long as it can seal between the first opening of the primary side flow path 52 and the first opening of the secondary side flow path 53. Further, the second gasket 92 does not need to be particularly limited as long as it can seal between the second opening of the primary side flow path 52 and the second opening of the secondary side flow path 53.

[0111] • In the embodiment, the pressure reducing valve 50 can also be configured such that the pressure reducing knob 73 is disposed on the side of the main body 51 opposite the connection surface 51c. In other words, the pressure reducing valve 50 is not limited to the configuration in which the pressure reducing knob 73 is disposed on the connection surface 51c in close proximity to the pressure gauge 80 in the longitudinal direction of the main body 51.

[0112] • In the embodiment, the electromagnetic valve 11 is a pilot-type electromagnetic valve of the double-solenoid type, but is not limited thereto and can also be a pilot-type electromagnetic valve of the single-solenoid type that mounts only one pilot valve.

[0113] • In the embodiment, the electromagnetic valve 11 can also be a four-port electromagnetic valve that omits the second discharge port R2. In other words, the electromagnetic valve 11 need only have at least one discharge port. Furthermore, the electromagnetic valve 11 can also be a three-port electromagnetic valve that has a supply port, an output port, and a discharge port.

[0114] Explanation of Reference Numerals

[0115] 10 electromagnetic valve manifold

[0116] 11 electromagnetic valve

[0117] 30 manifold base

[0118] 31 supply flow path

[0119] 40 spacer

[0120] 41 mounting surface

[0121] 42 first supply communication flow path

[0122] 43 second supply communication flow path

[0123] 50 pressure reducing valve

[0124] 51A first main body

[0125] 51B second main body

[0126] 51a first surface

[0127] 51b second surface

[0128] 51c connection surface

[0129] 52 primary-side flow path

[0130] 53 secondary-side flow path

[0131] 54 pressure reducing valve hole

[0132] 56 pressure reducing valve spool

[0133] 61 pressure reducing piston

[0134] 69 pressure reducing spring

[0135] 73 pressure reducing knob

[0136] 80 pressure gauge

[0137] 91 first gasket

[0138] 92 second gasket

[0139] P supply port

Claims

1. A solenoid valve manifold comprising multiple solenoid valves, multiple manifold bases, multiple spacers, and multiple pressure reducing valves. The solenoid valve has a supply port, and the plurality of solenoid valves are arranged in parallel in one direction. The manifold base has a supply flow path configured to supply pressurized fluid to the supply port. The spacer is located between the manifold base and the solenoid valve. The pressure reducing valve is configured to have a rectangular block-shaped body mounted on the spacer, and to reduce the pressure of the pressure fluid output from the solenoid valve. The manifold base, the spacer, and the main body are arranged side-by-side with the solenoid valve in the parallel direction of the solenoid valve. The width direction of each of the main bodies is consistent with the parallel orientation. Each of the spacers has a mounting surface, a first supply communication path, and a second supply communication path. The mounting surface is for mounting the main body. The first supply connection path has a first end communicating with the supply flow path and a second end opening toward the mounting surface. The second supply connection path has a first end communicating with the supply port and a second end opening toward the mounting surface. Each of the aforementioned main bodies has a primary side flow path, a secondary side flow path, a first surface, a second surface, and a connecting surface. The primary flow path is connected to the first supply connection flow path. The secondary side flow path is connected to the second supply connection flow path. The first surface is located at the first end of the main body along its long side. The second surface is located at the second end of the main body along its long side. The connecting surface connects the first surface and the second surface and extends along the long side and the width direction. A pressure gauge is provided at the connection surface, and the pressure gauge is configured to detect the pressure in the secondary side flow path. The width of the main body is smaller than the size of the pressure gauge in the width direction. The pressure reducing valve is configured to reduce the pressure in the secondary flow path so that the pressure detected by the pressure gauge becomes a set pressure, thereby reducing the pressure of the pressure fluid output from the solenoid valve. The primary side flow path and the secondary side flow path respectively penetrate the main body in the long side direction, and each has a first opening opening towards the first surface and a second opening opening towards the second surface. The pressure gauge protrudes from the connecting surface with its central portion offset from the first surface along the long side direction relative to the connecting surface. The plurality of said subjects includes a first subject and a second subject. The first surface of the first main body is mounted on the mounting surface. The second surface of the second body is mounted on a mounting surface of a spacer that is different from the spacer on which the first body is mounted. The first body and the second body are alternately arranged side by side in the parallel direction.

2. The solenoid valve manifold as described in claim 1, wherein... Equipped with a first pad and a second pad, The first gasket is configured to be installed on the first surface and to seal between the first opening of the primary flow path and the first opening of the secondary flow path. The second gasket is configured to be installed on the second surface and to seal the space between the second opening of the primary flow path and the second opening of the secondary flow path. The first pad and the second pad are of the same shape.

3. The solenoid valve manifold as described in claim 1 or 2, wherein... The pressure reducing valve has a pressure reducing valve orifice, a pressure reducing valve core, a pressure reducing piston, a pressure reducing spring, and a pressure reducing knob. The pressure reducing valve orifice connects the primary side flow path and the secondary side flow path. The pressure reducing valve core is configured to open and close the pressure reducing valve orifice. The pressure-reducing piston is configured to withstand the pressure of the secondary flow path and move back and forth integrally with the pressure-reducing valve core. The pressure-reducing spring is configured to apply force to the pressure-reducing piston in the direction that the pressure-reducing valve core opens. The pressure relief knob is configured to be operated in order to adjust the spring force of the pressure relief spring. The pressure relief knob is positioned on the connecting surface so as to be adjacent to the pressure gauge along the long side.

Images