Application apparatus

Patent metadata

Field	Value
Publication number	US-2016368013-A1
Application number	US-201615252660-A
Country	US
Kind code	A1
Filing date	Aug 31, 2016
Priority date	Apr 21, 2014
Publication date	Dec 22, 2016
Grant date	—

Abstract

A coating material is uniformly applied on an inner wall surface of a container while preventing leakage of the coating material and an increase in an installation space. An application apparatus ( 10 ) that applies a coating material (L) on an inner wall surface of a container (C) includes: a spray gun ( 20 ) having a spray nozzle ( 22 ); an outgoing pipe ( 30 ) and a return pipe ( 33 ); a supply control unit ( 50 ); a rotary drive unit ( 60 ); and a moving unit ( 70 ), wherein the outgoing pipe ( 30 ) and the return pipe ( 33 ) are each provided with a resilient-shape part ( 32, 35 ) capable of extending and contracting resiliently.

First claim

1 . An application apparatus that applies a coating material on an inner wail surface of a container, comprising:
a spray gun having a spray nozzle and including a coating material ejection passage formed therein; an outgoing pipe and a return pipe attached to said spray gun and forming a coating material circulatory path connecting to said coating material ejection passage; a supply control unit controlling supply of the coating material from said coating material circulatory path to said coating material ejection passage; a rotary drive unit rotating said spray gun around an axis extending along a longitudinal direction of the gun; and a moving unit moving said spray gun along the longitudinal direction of the gun, wherein said outgoing pipe and said return pipe are each provided with a resilient-shape part capable of extending and contracting resiliently.

2 . The application apparatus according to claim 1 , wherein said resilient-shape part is formed in a coil shape.

3 . The application apparatus according to claim 1 , wherein said rotary drive unit rotates said spray gun through a predetermined angle in forward and reverse directions.

4 . The application apparatus according to claim 1 , wherein said rotary drive unit rotates said spray gun 180° to 360°.

5 . The application apparatus according to claim 1 , wherein said spray nozzle has a nozzle shape capable of ejecting the coating material such as to spread symmetrically on both right and left sides.

6 . The application apparatus according to claim 1 , wherein said spray gun is disposed such that the longitudinal direction of the gun coincides with an up-and-down direction.

7 . The application apparatus according to claim 1 , wherein said supply control unit includes an air ejecting unit that supplies air to said spray gun to allow the coating material to be supplied from said coating material circulatory path to said coating material ejection passage, and
said rotary drive unit and said moving unit each include a pneumatic actuator.

8 . The application apparatus according to claim 1 , wherein said rotary drive unit includes a rotary actuator, and a gear interposed between said rotary actuator and said spray gun.

9 . The application apparatus according to claim 1 , further comprising a suction mechanism that can be positioned opposite a container opening.

10 . The application apparatus according to claim 9 , wherein
said suction mechanism includes an airflow augmentation unit, said airflow augmentation unit including an airflow augmenting passage having a gas supply part, a suction port, and an election port, said suction port being disposed opposite the container opening.

11 . The application apparatus according to claim 10 , wherein said airflow augmentation unit is disposed such that a shaft of said spray gun is positioned inside said airflow augmenting passage.

12 . The application apparatus according to claim 10 , further comprising a second moving unit that moves said airflow augmentation unit along the longitudinal direction of the gun.

Assignees

• Toyo Seikan Kaisha Ltd

Inventors

• Okada Yoshiaki
• NYUU Keisuke
• Miyazaki Tomoyuki
• KAWAI Yoshitsugu

Classifications

• B05B13/069

  the hollow bodies having a closed end · CPC title

• B05B3/10

  discharging over substantially the whole periphery of the rotating member {(B05B3/082 takes precedence)} · CPC title

• B05C7/02

  the liquid or other fluent material being projected · CPC title

• B05B15/58

  preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means {(B05B1/3093 takes precedence)} · CPC title

• B05B14/00

  Arrangements for collecting, re-using or eliminating excess spraying material (arrangements integral with nozzles B05B1/28) · CPC title