Control device of a pneumatic element
AssigneeGimatic S.p.A.
InventorLuciano Marchetti
Life of this patent
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Abstract
A control device of a pneumatic element includes a supply circuit supplying compressed air to an inlet of the pneumatic element. The control device includes a normally closed monostable valve having an inlet connected to a compressed air source and an outlet connected to the inlet of the pneumatic element. A bistable valve has an inlet connected to the compressed air source and an outlet connected to a first control port of the normally closed monostable valve. A normally open monostable valve has a first inlet connected to the compressed air source and an outlet connected to a second control port of the normally closed monostable valve. The first and second control ports controls the opening and closing of the normally closed monostable valve. The valves are operable control the flow of compressed air.
Claims21
A control device (1, 1′) to control a pneumatic element (Ve, E, 2), the control device (1, 1′) comprising a supply circuit (1.1) supplying compressed air for connecting to an inlet (2.1) of the pneumatic element (Ve, E, 2) and, in the supply circuit (1.1):
- a normally closed monostable valve (Vnc) having an inlet for connecting to a compressed air source (P) and an outlet for connecting to the inlet (2.1) of the pneumatic element (Ve, E, 2), and having a first control port (Vnc1) and a second control port (Vnc2),
- a bistable valve (Vb) having an inlet connected to said compressed air source (P) and an outlet connected to said first control port (Vnc1) of the normally closed monostable valve (Vnc), said first control port (Vnc1) being configured to control the closing of the normally closed monostable valve (Vnc),
- a normally open monostable valve (Vna) having a first inlet connected to said compressed air source (P) and an outlet connected to said second control port (Vnc2) of the normally closed monostable valve (Vnc), said second control port (Vnc2) being configured to control the opening of the normally closed monostable valve (Vnc),
- wherein the bistable valve (Vb) is able to take an open configuration to allow the compressed air to pass through, in which the inlet and the outlet of the same bistable valve (Vb) are connected, and a closed configuration to stop the compressed air from passing through, in which the inlet and the outlet of the same bistable valve (Vb) are disconnected and the outlet is connected to a nozzle(S) for venting the compressed air to atmosphere, and
- wherein the normally open monostable valve (Vna) is able to take an open configuration, in which the inlet and outlet of the same normally open monostable valve (Vna) are connected, and a closed configuration, in which the inlet and outlet of the same normally open monostable valve (Vna) are disconnected and the outlet is connected to the nozzle(S) for venting the compressed air to atmosphere.
Dependencies are inferred from the claim text.