Patent ID: 11946493
Assignee: SMC CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A flow rate controller, comprising:
a first flow path connected between an operation switching valve and an air cylinder, and configured to supply and discharge air to and from a cylinder chamber of the air cylinder;
a first flow rate control valve disposed in the first flow path;
a second flow path disposed in parallel with the first flow path;
a pilot check valve disposed midway along the second flow path, and including an inlet port, an outlet port, and a pilot port, the inlet port being connected to a first portion of the second flow path on a side of the operation switching valve, and the outlet port being connected to a second portion of the second flow path on a side of the air cylinder;
a second flow rate control valve disposed midway along the second flow path, and connected in series with the pilot check valve;
a pilot air flow path one end of which communicates with the first flow path between the first flow rate control valve and the operation switching valve and with the second flow path between the second flow rate control valve and the operation switching valve, and another end of which is connected to the pilot port of the pilot check valve; and
a third flow rate control valve disposed in the pilot air flow path.