Trinity Industrial Corporation

Toyota Jidosha Kabushiki Kaisha

Kazuo Katsuyama

Kenji Fukuta

Yutaka Ohhashi

Matsuo Komiyama

Minoru Tanno

An automatic valve comprising a first cylindrical magnet as a part of a valve rod axially slidable in a valve chamber for opening and closing a valve port and a second cylindrical magnet as a part of a piston disposed around and coaxially with the first cylindrical magnet for magnetically actuating the valve member under pneumatic control, in which respective ring magnets constituting each of the first and the second cylindrical magnets are stacked such that identical magnetic poles are axially faced to each other increasing the magnetic attraction force and also such that respective ring magnets in the second magnet are slightly deviated from those in the first magnet in the direction of closing the valve port for resisting the external valve-opening force. The piston has a spring for normally closing the valve ports and a round-about air discharge channel formed therein for discharging air when actuated by pressurized air against the spring force for reducing the number of air hoses, etc. The valve member is disposed at the inside of the valve chamber with a fluid channel formed therebetween which can be utilized also as a passage for a cleaning solvent.

Automatic valve

A coating material supply device in which coating material is pumped out at a predetermined flow rate and supplied at a constant flow rate to a coating machine. The device includes a plurality of double-acting reciprocal pumps, each having an inlet for the coating material supplied from a coating material supply source and an exit for discharging the coating material by the pressure of hydraulic fluid supplied at a constant flow rate from a hydraulic fluid supply source. The exits are connected to coating material selection valves connected in parallel with each other to the coating machine, and connected to switching valves that selectively switch the flow channel for the hydraulic fluid supplied from the hydraulic fluid supply source in response to the switching operation of the coating material selection valves. A flow rate control mechanism for maintaining the flow rate of the hydraulic fluid constant is disposed in the flow channel for the hydraulic fluid, between the hydraulic fluid supply source and the switching valves.

Coating material supply device

A coating material supply device capable of accurately supplying even a highly viscous coating material such as a two-component coating material by a constant amount to a coating machine with no trouble, as well as with no requirement of individually disposing flowmeters, e.g., for respective colors in the case of multicolor coating under color-change.

A two-component mixing type coating method which is utilized for coating car components, and the like. A main component solution and a hardner solution are run together at an intermediate portion of a supply conduit and are mixed. The mixture solution is sent to a coating spray gun and injected from the gun for coating. The two-component mixing type coating method of the present invention is characterized in that check valves and stop valves are disposed at positions of the flow conduits upstream from the junction, an escape valve is connected to a flow conduit at a portion downstream from the junction, and when the coating spray operation from the coating spray gun is stopped, the escape valve is opened and then the stop valves are closed by control means.

Two-component mixing type coating method

A two-component mixing type coating apparatus comprises a supply/mixing device for letting a main component and a hardener run together at an intermediate portion of a supply conduit and sending them to a coating spray gun, check valves disposed in flow portions upstream of a junction in order to prevent backflow from the junction, and stop valves disposed in the flow portions between the check valves and the junction in order to close the flow portions in response to the stop of spray of coating by the coating spray gun.

Growing community of inventors

Toyota, Japan

Kazuo Katsuyama