Device for assembling an expansion shell

Details Device for assembling an expansion shell Device for assembling an expansion shell

1979-04-23

1981-03-24

Ramsey, Kenneth J.

Metal working

Method of mechanical manufacture

Assembling or joining

29467, 29509, 29784, 29818, B23P 1102

Patent

active

042571537

ABSTRACT:
Method and apparatus for automatically assembling and banding together the component parts of an expansion shell of the type typically used in a mine bolt assembly. The parts are loaded into a die position in a first work station wherein a tapered wedge is supported within a central hole passing through the die and two shell sections are seated on inclined sides located on opposite sides of the hole. A thin metal U-shaped strap is placed between die mounted guides so that the legs of the strap are positioned between raised ears carried by the shell segments and the base of the strap passes over the wedge. The die is advanced into a second work station where the ears are coined against the strap. The die is then returned to the first station where an ejection tool is passed upwardly through the hole in the die to force the wedge, and thus the other components, upwardly through a forming gauge and a banding block wherein the parts are conformed into a compact final configuration and bound together by means of a resilient band.

REFERENCES:
patent: 3568292 (1971-03-01), Kasper
patent: 3842476 (1974-10-01), Prince
patent: 4178672 (1979-12-01), Amico et al.

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