AIR CHUCK

• Main Author: SAEGUSA MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 25.10.2022
• Subjects: CHAMBERS PROVIDED WITH MANIPULATION DEVICES; HAND TOOLS; MANIPULATORS; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; TRANSPORTING

To provide an air chuck which prevents a work-piece from falling during non-electric conduction of an electromagnetic valve due to a power failure and so on.SOLUTION: A chuck unit 12 comprises: a first pressure chamber 26; and a second pressure chamber 28 provided on both sides of a piston 16 for driving a plurality of fingers 50. A valve unit 56 comprises: a first output air flow passage 74 which is connected to one of the first pressure chamber and the second pressure chamber; a second output air flow passage 76 which is connected to the other of the first pressure chamber and the second pressure chamber; a first electromagnetic valve 58 connected to the first output air flow passage; and a second electromagnetic valve 60 connected to the second output air flow passage. The first output air flow passage connects the first output air flow passage to an air supply source during energization conduction, and opens the first output air flow passage to atmosphere during non- energization conduction, and the second electromagnetic valve opens the second output air flow passage to atmosphere during energization conduction, and connects the second output air flow passage to the air supply source during non-energization conduction.SELECTED DRAWING: Figure 5 【課題】停電等による電磁弁の非通電時にワークが落下するのを防止するエアチャックを提供する。【解決手段】チャックユニット１２は、複数のフィンガ５０を駆動するピストン１６の両側に設けられる第１圧力室２６および第２圧力室２８を備え、バルブユニット５６は、第１圧力室および第２圧力室の一方に接続される第１出力エア流路７４、第１圧力室および第２圧力室の他方に接続される第２出力エア流路７６、第１出力エア流路に接続される第１電磁弁５８および第２出力エア流路に接続される第２電磁弁６０を備え、第１電磁弁は、通電時に第１出力エア流路をエア供給源に接続し、非通電時に第１出力エア流路を大気に開放するものであり、第２電磁弁は、通電時に第２出力エア流路を大気に開放し、非通電時に第２出力エア流路をエア供給源に接続するものである。【選択図】図５