| 摘要 |
An improved control circuit for the pneumatically operated punch press feeder illustrated in U.S. Pat. No. 3,038,645; the use of which circuit permits a simplification of the construction of the feeder by enabling the stock clamping as well as the stock gripping motors of feeder to be single acting. This improved circuit and the resultant simplification of structure will allow benefits of the sequencing action of the dual valve system to be retained while reducing the cost of manufacture and maintenance of such a feeder.
|
