JPH061950U - Solenoid valve manifold - Google Patents

Abstract

(57) [Abstract] [Purpose] Regarding the solenoid valve manifold consisting of the required number of solenoid valves 51 and the manifold base 91 that is converged and mounted, the pressure specifications change (for the presence or absence of pilot pressure supply source At the time of change), it is not necessary to replace the solenoid valve 51 and the manifold base 91. [Configuration] Input port 52, two output ports 53, 5
4, a required number of solenoid valves 51 having two discharge ports 55, 56 and a pilot pressure input port 57, an input passage 92, two discharge passages 93, 94 and a manifold base having a pilot pressure input passage 95 91 to combine the input flow passage 92 and the pilot pressure input flow passage 95.
A communication passage 96 that communicates with each other is provided, and a passage switching valve 97 is provided at a confluence portion of the pilot pressure input flow passage 95 and the communication passage 96.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a solenoid valve manifold including a required number of solenoid valves and a manifold base on which the solenoid valves are converged and mounted.

[0002]

[Prior art]

 Conventionally, as a solenoid valve manifold including a required number of 5-port pneumatic solenoid valves and a manifold base on which the solenoid valves are converged and mounted, the solenoid valve manifold shown in FIG. 6 or 7 is known. The 5 port type pneumatic solenoid valve has an input port, 2 output ports and 2 discharge ports, and this 5 port type pneumatic solenoid valve uses the main pressure supplied to the input port as pilot pressure. There are an internal pilot operation method that uses the plunger to return the plunger, and an external pilot operation method that uses the pilot pressure different from the main pressure to return the plunger. The latter external pilot operated solenoid valve is equipped with a pilot pressure input port as the sixth port in order to take in pilot pressure from an external pilot pressure supply source.

Of these, the solenoid valve manifold of FIG. 6 is formed by combining a required number (three in the figure) of solenoid valves 1 of the internal pilot operation type and a manifold base 3 1 that converges and mounts the solenoid valves 1. Become. The solenoid valve 1 is provided with an input port 2, a first output port 3, a second output port 4, a first discharge port 5 and a second discharge port 6, respectively. Further, the manifold base 31 has an input passage 32 connected to the input port 2 of each solenoid valve 1, a first discharge passage 33 connected to the first discharge port 5 of each solenoid valve 1, and each solenoid valve. A second discharge flow path 34 connected to the second discharge port 6 of No. 1 is provided.

For example, when the working piston of a pneumatic cylinder (not shown) is reciprocated by the solenoid valve manifold of FIG. 6, the first output port 3 of each solenoid valve 1 is used as the forward movement port of the pneumatic cylinder. Connect and connect the second output port 4 to the return port. The solenoid valves 1 each reciprocate one pneumatic cylinder. When the solenoid valve 1 is not energized, each port is in the communication position shown. When main pressure (this main pressure is positive pressure) is supplied from the main pressure supply source (not shown) to the input flow path 32 in this state, this main pressure causes the input port 2 and the first output port 3 to flow. After that, it is supplied to the forward movement port and causes the working piston to move forward. When the solenoid valve 1 is energized, the plunger is attracted and the communication between the ports is switched, the input port 2 and the second output port 4 communicate with each other, and the main pressure supply source supplies the main flow passage 32 with the main flow. Pressure is supplied to the return port via the input port 2 and the second output port 4 to return the working piston. Further, at this time, since the first output port 3 and the first discharge port 5 are in communication with each other, the main pressure supplied to the forward movement port to move the working piston forward is the first output port. 3, discharged from the first discharge passage 33 through the first discharge port 5. When the solenoid valve 1 is de-energized, a part of the main pressure acts as pilot pressure by the internal mechanism (not shown) of the solenoid valve 1, and the pilot pressure causes the plunger to return and the communication of each port. Is switched to the position shown in the figure again, the input port 2 and the first output port 3 communicate with each other, and the main pressure supplied from the main pressure supply source to the input flow path 32 is input port 2 and the first output port 3 After that, it is supplied to the forward movement port to move the working piston forward again. At this time, since the second output port 4 and the second discharge port 6 are in communication with each other, the main pressure supplied to the return port to move the working piston back is the second output port 4, It is discharged from the second discharge flow path 34 via the second discharge port 6. By switching the solenoid valve 1 by the above operation, the working piston is reciprocated.

On the other hand, the solenoid valve manifold of FIG. 7 is a combination of a required number (three in the figure) of external pilot operation type solenoid valves 51 and a manifold base 71 that converges and mounts the solenoid valves 51. Consists of. The solenoid valve 51 is provided with an input port 52, a first output port 53, a second output port 54, a first discharge port 55 and a second discharge port 56, respectively, and a pilot pressure input as a sixth port. A port 57 is provided. Further, the manifold base 71 has an input passage 72 connected to the input port 52 of each solenoid valve 51, a first discharge passage 73 connected to the first discharge port 55 of each solenoid valve 51, and each solenoid valve. A second discharge flow path 74 connected to the second discharge port 56 of 51 is provided, and a pilot pressure input flow path 75 connected to the pilot pressure input port 57 of each solenoid valve 51 is further provided.

When, for example, the working piston of a pneumatic cylinder (not shown) is reciprocated by the solenoid valve manifold of FIG. 7, the first output port of each electromagnetic valve 51 is the same as the solenoid valve manifold of FIG. 53 is connected to the forward movement port of the pneumatic cylinder, and the second output port 54 is connected to the backward movement port. When the solenoid valve 51 is not energized, each port is in the illustrated communication position. In this state, when the main pressure (this main pressure is a positive pressure) is supplied from the main pressure supply source (not shown) to the input flow path 72, this main pressure is applied to the input port 52 and the first output port 53. After that, it is supplied to the forward movement port to move the working piston forward. When the solenoid valve 51 is energized, the plunger is attracted and the communication between the ports is switched, the input port 52 and the second output port 54 communicate with each other, and the main pressure supply source supplies the main flow path 72 with the main flow path 72. The pressure is supplied to the return port via the input port 52 and the second output port 54 to return the working piston. Further, at this time, since the first output port 53 and the first discharge port 55 are in communication with each other, the main pressure that is supplied to the forward movement port to move the working piston forward is the first output port 53, It is discharged from the first discharge passage 73 through the one discharge port 55. When the solenoid valve 51 is de-energized, the pilot pressure continues to be supplied to the pilot pressure input port 57 from the pilot pressure supply source (not shown) through the pilot pressure input flow path 75 (this pilot pressure is positive pressure). (Or negative pressure) causes the plunger to return and the communication of each port is switched to the position shown in the figure again, the input port 52 and the first output port 53 communicate, and the main pressure supply source to the input flow path 72 is connected. The supplied main pressure is supplied to the forward movement port via the input port 52 and the first output port 53, and the forward movement of the working piston is performed again. Further, at this time, since the second output port 54 and the second discharge port 56 are in communication with each other, the main pressure supplied to the return port to move the working piston back is the main pressure applied to the second output port 54, It is discharged from the second discharge passage 74 through the second discharge port 56. By switching the solenoid valve 51 by the above operation, the working piston is reciprocated.

[0007]

[Problems to be solved by the device]

 The above conventional technique has the following problems. That is, there are two types of solenoid valves, the internal pilot operated solenoid valve 1 and the external pilot operated solenoid valve 51, in the same 5-port type pneumatic solenoid valve, and there are two types of manifold bases 31 and 71 accordingly. In addition, when changing the pressure specifications (changing the presence or absence of the pilot pressure supply source), the entire solenoid valve manifold must be replaced. Therefore, it is necessary to prepare two types of solenoid valve manifolds in advance in preparation for pressure specification changes. Further, since the solenoid valve 1 of the internal pilot operating system shown in FIG. 6 can be connected to the manifold base 71 for the external pilot operating system shown in FIG. 7, the manifold base 71 can be connected when the pressure specification is changed. It is possible to replace only the solenoid valves 1 and 51 without replacing 71, but in this case, the required number of solenoid valves 1 and 51 must be replaced one by one, and the replacement work is complicated. Is.

[0008]

[Means for Solving the Problems]

 In view of the above points, the present invention has been devised to solve the above-mentioned problems in the prior art. In order to achieve this object, an input port, two output ports, two exhaust ports and a pilot port are provided. A required number of solenoid valves having a pressure input port, an input flow passage connected to the input port of each solenoid valve, two discharge flow passages connected to the two discharge ports of each solenoid valve, A pilot pressure input flow path connected to the pilot pressure input port of each solenoid valve, a communication passage that connects the input flow passage and the pilot pressure input flow passage, and a confluence portion of the pilot pressure input flow passage and the communication passage. A solenoid valve manifold comprising: a manifold base having a flow path switching valve provided in the.

[0009]

[Operation] The solenoid valve manifold of the present invention having the above-mentioned configuration deals with the change of the pressure specification as follows. For the solenoid valve, always use an external pilot operated solenoid valve with a pilot pressure input port. Do not replace the manifold base either. A. When there is no pilot pressure supply source Operate the flow passage switching valve to connect the input flow passage and the pilot pressure input flow passage through the communication passage, and part of the main pressure supplied to the input flow passage Supply to the pilot pressure input port of each solenoid valve via the pressure input line. B. When there is a pilot pressure supply source, the flow passage switching valve is switched to shut off the communication between the input flow passage and the pilot pressure input flow passage, and the pilot pressure supplied from the pilot pressure supply source, which is different from the main pressure, is piloted. It is supplied to the pilot pressure input port of each solenoid valve via the pressure input flow path.

[0010]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the solenoid valve manifold is a required number (three in the figure) of external pilot operated solenoid valves 51 and a manifold base on which the solenoid valves 51 are converged and mounted. It is a combination with 91. The solenoid valve 51 has the same structure as the solenoid valve 51 shown in FIG. 7, and therefore the same reference numerals are used. That is, 52 is an input port, 53 is a first output port, 54 is a second output port, 55 is a first discharge port, 56 is a second discharge port, and 57 is a pilot pressure input port. Further, the manifold base 91 has an input passage 92 connected to the input port 52 of each solenoid valve 51, a first discharge passage 93 connected to the first discharge port 55 of each solenoid valve 51, and each solenoid valve 51. A second exhaust flow path 94 connected to the second exhaust port 56 of the above and a pilot pressure input flow path 95 connected to the pilot pressure input port 57 of each solenoid valve 51 are provided. A communication passage 96 for communicating the input flow passage 92 and the pilot pressure input flow passage 95 with each other in the vicinity of the respective inlets 92a, 95a is provided, and the flow passage is switched to the confluence of the pilot pressure input flow passage 95 and the communication passage 96. A valve 97 is provided.

The solenoid valve manifold configured as described above deals with the change of pressure specifications as follows, without replacing both the solenoid valve 51 and the manifold base 91. A. When there is no pilot pressure supply source As shown in FIGS. 1 and 2, the flow passage switching valve 97 is operated to connect the input flow passage 92 and pilot pressure input flow passage 95 via the communication passage 96, and Part of the main pressure supplied to the flow passage 92 is supplied to the pilot pressure input port 57 of each electromagnetic valve 51 via the communication passage 96 and the pilot pressure input flow passage 95. At this time, the inflow port 95a of the pilot pressure input flow passage 95 is closed from the inside by the flow passage switching valve 97 (see FIG. 4 described later). B. When there is a pilot pressure supply source (not shown) As shown in FIG. 3, the flow passage switching valve 97 is switched to cut off the communication between the input flow passage 92 and the pilot pressure input flow passage 95, and the pilot pressure supply The pilot pressure supplied from the source is supplied to the pilot pressure input port 57 of each solenoid valve 51 via the pilot pressure input flow path 95. Therefore, according to the solenoid valve manifold configured as described above, it is not necessary to replace both the electromagnetic valve 51 and the manifold base 91 when changing the pressure specification, and it is possible to deal with this by simply switching the flow path switching valve 97. Therefore, all the problems found in the conventional technology can be solved.

The flow passage switching valve 97 is a three-way valve that switches the flow passages as illustrated in FIGS. 4 and 5, and in the above-described embodiment, it is a manual type that rotates the cock 97 a protruding to the outside of the manifold base 91. However, it is possible to electrically switch the internal pilot and the external pilot by using a 3-port solenoid valve (not shown) for the flow path switching valve 97.

[0014]

[Effect of device]

 The present invention has the following effects. In other words, even if the pressure specifications are changed, it is not necessary to replace the solenoid valve and the manifold base, and it is possible to respond by simply switching the flow path switching valve. It is not necessary to prepare two types of solenoid valve manifolds in advance in case of change. In addition, it is possible to omit any complicated replacement work.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of a solenoid valve manifold according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing the structure of the solenoid valve manifold and the flow of pressure.

FIG. 3 is an explanatory view showing the structure of the solenoid valve manifold and the flow of pressure.

FIG. 4 is an explanatory view showing the structure and operation of a flow path switching valve.

FIG. 5 is an explanatory view showing the structure and operation of the flow path switching valve.

FIG. 6 is a structural explanatory view of a solenoid valve manifold according to a conventional example.

FIG. 7 is a structural explanatory view of a solenoid valve manifold according to another conventional example.

[Explanation of symbols]

 51 Solenoid Valve 52 Input Port 53 First Output Port 54 Second Output Port 55 First Discharge Port 56 Second Discharge Port 57 Pilot Pressure Input Port 91 Manifold Base 92 Input Channels 92a, 95a Inlet 93 First Discharge flow path 94 second discharge flow path 95 pilot pressure input flow path 96 communication path 97 flow path switching valve 97a cock

Claims (1)

[Scope of utility model registration request] 1. Input ports (52), two output ports (53) (54), two discharge ports (55) (56).
And a required number of solenoid valves (51) having a pilot pressure input port (57), an input flow path (92) connected to the input port (52) of each solenoid valve (51), and each solenoid valve (51). ) Two discharge passages (93) (94) connected to the two discharge ports (53) (54), pilot pressure connected to the pilot pressure input port (57) of each solenoid valve (51) An input flow path (95), a communication path (96) communicating the input flow path (92) and the pilot pressure input flow path (95), and a pilot pressure input flow path (95) and the communication path (96). A manifold base (9) having a flow path switching valve (97) provided at the confluence part of
A solenoid valve manifold consisting of 1) and