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Pneumatic Cylinder Deceleration System

IP.com Disclosure Number: IPCOM000046899D
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Howe, SM: AUTHOR [+2]

Abstract

In a mechanical deceleration system, varying lengths of travel with controlled deceleration cannot be easily obtained without a complex pneumatic switching assembly. The deceleration system shown in the figure provides controlled deceleration of the moving parts, such as rod 15 associated with the piston 8 of a pneumatic cylinder 5 through the use of a programmable controller 6. Control is obtained at each end of the stroke and at any number of intermediate positions as determined by typical hard stops 9 and 10. Additional hard stops can be added, as necessary. Further control is obtained where the piston rod 15 is designed to return to a common location from any of the intermediate positions.

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Pneumatic Cylinder Deceleration System

In a mechanical deceleration system, varying lengths of travel with controlled deceleration cannot be easily obtained without a complex pneumatic switching assembly. The deceleration system shown in the figure provides controlled deceleration of the moving parts, such as rod 15 associated with the piston 8 of a pneumatic cylinder 5 through the use of a programmable controller 6. Control is obtained at each end of the stroke and at any number of intermediate positions as determined by typical hard stops 9 and 10. Additional hard stops can be added, as necessary. Further control is obtained where the piston rod 15 is designed to return to a common location from any of the intermediate positions. The system, utilizing programmable controller 6, solenoid valve V2 and typical electrical switches (such as S1 and S2) at each intermediate position, replaces air-piloted deceleration valves and pneumatic cam switches. Solenoid valve V2 is operated by commands from the controller. As shown in the figure, typical stops, such as 9 and 10, are positioned as required by the respective solenoid valves V3 and V4 in the path of the rod 15. The cam 17 on rod 15 is about to engage the inclined surface 16 of switch S1. When switch S1 is closed as the air supply moves the piston 8 of cylinder 5 from left to right, the controller 6 switches the deceleration solenoid valve V2 after a predetermined time. Switching valve V2 directs air being exhauste...