GB261474A - Improvements in or relating to extruding presses for forming rods and tubes from metal billets - Google Patents

Abstract

261,474. Berry & Co., Ltd., H. and Bull, G. Aug. 19, 1925. Addition to 228,325. Squirting.-In presses as described in the parent Specification the die 2, Fig. 2, is mounted on the plunger 6 and improved means are provided for supporting the container 4 and die 2, for removing the unextruded residue 3y and skull 3z, Fig. 3, and for operating the billet-inserting plunger 5, Fig. 11, and closure 7. The die 2, Fig. 3, has an extension 2<a> to engage a corresponding recess in the plunger 6. The container 4 has wedges 4<c>, Fig. 5, adjustable by screws 4<d>, to vary the height, and slides on rails 4b adjustable laterally by screws 4e. In order to remove the residue 3y it is forced to project from the container 4 by pressing this over the plunger 6 by double acting pistons 8<x> or by the main piston 9 acting through an annular gag c<1>, Figs. 9 and 10, or through the closure 7 offset as in Fig. 8. The residue projecting is then siezed by a clamp 10 an'd extracted. The skull 3z, Fig. 3, is removed from the container 4 by withdrawing this from the plunger 6 introducing a solid disc b. Fig. 6, and returning the container over the plunger. The plunger 5 is operated by a piston 5<a>, Fig. 11. acting, through two racks and pinions 5<b>, 5e and the closure 7 by a cylinder 7<a>. Fig. 2. When tubes are to be made a hollow billet 3. Fig. 16, and block d<1>. with a mandrel d engaging the bore thereof, are introduced into the container. In modifications the plunger 6 mav move instead of or in addition to the container 4.