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Diskette Pick-Up and Separation Arrangement and Method

IP.com Disclosure Number: IPCOM000059628D
Original Publication Date: 1986-Jan-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 3 page(s) / 61K

Publishing Venue

IBM

Related People

Bleau, CD: AUTHOR [+3]

Abstract

This article describes an arrangement and method for picking up five and one-quarter inch diskettes utilizing a pneumatic elevator and a diskette pick-up head. An air separation device is included to keep one diskette from sticking to another when being picked up. The diskette pick-up arrangement is shown in Fig. 1 and comprises an elevator 1 and diskette pick-up arm and head assembly. The system will be described by reviewing a typical cycle. Assume a full diskette holder 10 has been loaded onto platform 9 by an operator, and a machine cycle start button (not shown) has been depressed. Vacuum is applied to the pick-up head 2 via vacuum lines 4; this vacuum being ultimately applied at the curved pick-up surface 3.

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Diskette Pick-Up and Separation Arrangement and Method

This article describes an arrangement and method for picking up five and one- quarter inch diskettes utilizing a pneumatic elevator and a diskette pick-up head. An air separation device is included to keep one diskette from sticking to another when being picked up. The diskette pick-up arrangement is shown in Fig. 1 and comprises an elevator 1 and diskette pick-up arm and head assembly. The system will be described by reviewing a typical cycle. Assume a full diskette holder 10 has been loaded onto platform 9 by an operator, and a machine cycle start button (not shown) has been depressed. Vacuum is applied to the pick-up head 2 via vacuum lines 4; this vacuum being ultimately applied at the curved pick-up surface 3. This curvature performs three functions: diskette separation, column stiffness for the diskette and shaping of the diskette for insertion into jackets. Curvature of the pick-up head 2 is shown in the detailed view of Fig. 2. The diskette holder platform 9 is actuated upward at high speed (approximately 10 in/sec) by air cylinder 12. Air nozzle 5 is turned on prior to upward movement of platform 9 to shuffle and separate diskettes as they pass. A pneumatic deceleration circuit actuated by photoconductor 6, which looks for the top of the diskette stack, slows the platform 9 ascent to approximately 0.5 in/sec. The platform 9 then continues at this reduced velocity until contact is made between the diskettes and the pick-up head 2. When contact takes place, a sequence occurs to control the magnitude of the compressive force applied to the stack of diskettes and the duration of this compressive force. Force-limiting spring 7 begins to compress, thereby limiting the compressive force to the value allowed by the spring. Simultaneously, photoconductor 11, which is located on the same height plane as the pick-up surface 3 of the pick-up head 2, begins a time-out. This time-out allows picking time for a diskette, but is short enough to prevent bottoming out of force-limiting spring 7. Normally, vacuum switch 12 will transfer (successfully pick) before time-out, and platform 9 will move downward swiftly to home position design...