Electromagnetic valve manifold

1. An electromagnetic valve manifold, comprising:

valve assemblies arranged in a single direction, each valve assembly including electromagnetic valves arranged in the single direction; and

a slave station disposed at an end of the electromagnetic valve manifold in the single direction and configured to receive, from a master station, a control signal used to control driving of the electromagnetic valves, wherein

the electromagnetic valves each include a valve block through which a passage extends in the single direction, wherein a fluid flows through the passage,

the passages in adjacent ones of the valve blocks in the single direction connect to each other,

the electromagnetic valve manifold further comprises a valve driving unit disposed in correspondence with each of the valve assemblies, each of the valve driving units being configured to control the driving of the electromagnetic valves of a corresponding one of the valve assemblies using the control signal from the slave station,

the slave station includes:

a control signal input port that receives the control signal from the master station;

a valve driving unit power input port that receives valve driving unit power from a first external device, the valve driving unit power being used to drive each of the valve driving units; and

a slave station output port that sends, to the valve driving units, the control signal received by the control signal input port and the valve driving unit power received by the valve driving unit power input port,

the valve driving units each include:

an electromagnetic valve power input port that receives electromagnetic valve power from a second external device, the electromagnetic valve power being used to drive the electromagnetic valves of a corresponding one of the valve assemblies;

a circuit board configured to control the driving of the electromagnetic valves of a corresponding one of the valve assemblies using the control signal from the slave station output port and send, to the electromagnetic valves, the electromagnetic valve power received by the electromagnetic valve power input port; and

a housing that accommodates the circuit board,

the slave station output port and one of the valve driving units closest to the slave station are electrically connected to each other by a first cable,

adjacent ones of the valve driving units in the single direction are electrically connected to each other by a second cable configured to deliver the control signal and the valve driving unit power, sent to one of the adjacent ones of the valve driving units in the single direction, to the other one of the adjacent ones of the valve driving units in the single direction, and

the housing includes a passage sealing unit configured to seal the passage.

2. The electromagnetic valve manifold according to claim 1 , comprising:

a base that extends in the single direction and supports the electromagnetic valves; and

a bracket that fixes each of the valve driving units to the base.

3. The electromagnetic valve manifold according to claim 1 , wherein

the valve driving units each include a regulator, and

the regulator is configured to reduce a voltage of the valve driving unit power sent from the slave station output port to a driving voltage at the circuit board.

4. An electromagnetic valve manifold, comprising:

valve assemblies arranged in a single direction, each valve assembly including electromagnetic valves arranged in the single direction; and

a slave station disposed at an end of the electromagnetic valve manifold in the single direction and configured to receive, from a master station, a control signal used to control driving of the electromagnetic valves, wherein

the electromagnetic valves each include a valve block through which a passage extends in the single direction, wherein a fluid flows through the passage,

the passages in adjacent ones of the valve blocks in the single direction connect to each other,

the electromagnetic valve manifold further comprises a valve driving unit disposed in correspondence with each of the valve assemblies, each of the valve driving units being configured to control the driving of the electromagnetic valves of a corresponding one of the valve assemblies using the control signal from the slave station,

the slave station includes:

a control signal input port that receives the control signal from the master station;

a valve driving unit power input port that receives valve driving unit power from an external device, the valve driving unit power being used to drive each of the valve driving units; and

a slave station output port that sends, to the valve driving units, the control signal received by the control signal input port and the valve driving unit power received by the valve driving unit power input port,

the valve driving units each include:

an electromagnetic valve power input port that receives electromagnetic valve power from the external device, the electromagnetic valve power being used to drive the electromagnetic valves of a corresponding one of the valve assemblies;

a circuit board configured to control the driving of the electromagnetic valves of a corresponding one of the valve assemblies using the control signal from the slave station output port and send, to the electromagnetic valves, the electromagnetic valve power received by the electromagnetic valve power input port; and

a housing that accommodates the circuit board,

the slave station output port and one of the valve driving units closest to the slave station are electrically connected to each other by a first cable,

adjacent ones of the valve driving units in the single direction are electrically connected to each other by a second cable configured to deliver the control signal and the valve driving unit power, sent to one of the adjacent ones of the valve driving units in the single direction, to the other one of the adjacent ones of the valve driving units in the single direction, and

the housing includes a passage sealing unit configured to seal the passage.