GB1390538A - Method of amking a fitting member and securint it to a container or part of a container - Google Patents

Abstract

1390538 Securing spiked plates to containers; shearing; punching; bending NEFAB PLYWOODEMBALLAGE AB 13 Nov 1972 [12 Nov 1971] 52301/72 Headings B3A B3E and B3W A method of securing fittings or plates to containers comprises feeding a strip 3 from a supply 2, Fig. 1, providing the strip with securing tabs, shearing off the strip to form a plate of required length, and pressing or clenching the plate on to the container. The strip, which is preferably of metal, e.g. carbon steel, is fed through rolls 6, 7 and a guide 9 into a machine comprising a stationary frame 10 and vertically reciprocable beam 11. Stamping means are provided on the machine to form the tabs and comprise a plurality of members 33, Fig. 2, which can move into bores (34), Fig. 3 (not shown), of a die 17. The members have bevelled, pointed ends to penetrate the strip to form the tabs and they are attached to holders 35 and are removable individually and in groups. The means 15 for shearing comprises a movable shearing edge 31 formed on a slide phase 18 and an edge 32 on the frame. A press 13 includes the slide plate 18, preferably made of hard metal, which has a recess on its underside with two press surfaces (20) (21), Fig. 4 (not shown). These surfaces co-operate with support surfaces (24) (25) on an arm 23 on which two walls 26, 27 of a container made of wood, paper or plastics, or a combination of these materials are supported during the pressing operation. Retainer members (29), preferably spring-biased, are used to hold the plate until the plate is released and clenched on to the walls 26, 27. A stripper 42 is provided to remove the strip from the stamping members after the tab stamping. Spring members 51 are connected to the die 17 to ensure that the tabs do not contact the die after stamping. A support 56 is provided to aid in the clenching of long plates. In an alternative embodiment, a machine utilizing shorter plates includes a retainer 28 which comprises two grooves (57), (58), Fig. 6 (not shown), and pneumatically-operated shear 15. This comprises a knife or axe 59, Fig. 5, connected to the movable beam 11, and adapted to shear off the strip 3 against edge 32 of die 17. The ends of the knife are connected to piston rods (60), Fig. 6 (not shown), of pneumatic pistoncylinder mechanism 61 which act as springs for the knife. A shoulder 64 is formed on the knife to limit its stroke downwards and a shoulder 65 is formed on the other side of the knife to aid its upward motion by combining with a nose 66 of the slide 18. Control of the machine may be electrical, pneumatic or hydraulic. Plates other than V- formed edge plates may be formed, e.g. lock plates.