Abstract:
PROBLEM TO BE SOLVED: To provide an electrostatic coating apparatus which can rapidly actuate a high voltage safety device by rapidly raising and dropping high voltage. SOLUTION: A housing 2 of the coating apparatus 1 is internally provided with an air motor 6, and a rotary atomizing head 7 is attached to the air motor 6. Also, a high voltage generator 13 which supplies high-voltage to the rotary atomizing head 7 through the air motor 6, or the like, is arranged within an arm section 5 of the housing 2 and a high voltage controller unit 17 consisting of a high voltage controller 18 and the high voltage safety device 21 is arranged adjacently to the high voltage generator 13. As a result, the raising and dropping of the high voltage can be rapidly executed by making the frequency of the driving voltage by the high voltage controller 18 higher and the transmission of the high voltage value Vm and high current value Im of the high voltage to the high voltage safety device 21 is made possible without delay and the high voltage safety device 21 can be rapidly actuated. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To improve the durability by preventing wear when a cartridge is attached to or detached from a coating apparatus or a coating material packing means. SOLUTION: An installation member 42 and a holding member 46 are made separate parts and a positioning apparatus 49 for attracting both members in the positioning state of the holding member installation body 44 of the installation member 42 and the contact member 47 of the holding member 46 is installed between them, and an air supply path 52 for parting the holding member installation body 44 and the contact member 47 against the positioning apparatus 49 is formed in the holding member installation body 44. Accordingly, the holding member 46 can be moved freely by parting the holding member installation body 44 and the contact member 47 by compressed air from the air supply path 52. Consequently, for example, when a cartridge 21 is attached to a coating material packing apparatus 33, positioning shift of the cartridge holding apparatus 41 is allowed to prevent a feed tube 23, a feed tube insertion hole 36 and the like from wearing. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To discriminate seal performance of gland packing even in the middle of the operation of a control valve by detecting an axial load or the like acting on a valve shaft. SOLUTION: The gland packing 23 to seal between a lid part 5A of a support frame 5 and the valve shaft 22 is constituted by using, for example, nine packing materials 23a-23i. A packing fastener 24, which adjusts axial fastening force to the packing materials 23a-23i, is provided on the lid part 5A. Also, a load (a sliding resistance value F of the gland packing 23) to be applied to the valve shaft 22 is detected by an axial force sensor. And, the side pressures Pra-Pri (fastening allowance to the valve shaft 22) of the packing materials 23a-23i are obtained by individually calculating them by using the sliding resistance value F in a load-free state acting between the gland packing 23 and the valve shaft 22. Accordingly, each seal performance is discriminated from the side pressures Pra-Pri. COPYRIGHT: (C)2004,JPO