GB1285909A - Device for forming lugs on sides of hollow components - Google Patents

Abstract

1285909 Stamping RIZHSKY ELEKTROLAMPOVY ZAVOD 29 Nov 1969 58469/69 Heading B3Q A device for forming projections on the sides of hollow metal articles comprises a stationary support 5, punches 6, 7 secured to the support perpendicular to its axis, and a hollow ported arbor 10 on which is positioned an article 11. The arbor is held on the support by the punches 6, 7 entering the ports 13, 14 and may be displaced laterally relatively to the support. Rotating heads 19, 20 are provided with rollers 21 coaxial with the punches, and are alternately reciprocated to form the projections on the article by the rollers, while the arbor with the article is displaced by the heads relative to the support. A base fitting of an electric lamp or valve, is placed on the arbor 10 and it is centered thereon by the end of a rod 66 entering an aperture in its base as a slide 2 is lowered. A hollow rod 62 slides over the arbor and presses a plate 49, down to the bottom of a recess 4. To avoid excessive loading on the base 11, rods 54 move a cross-piece 53 and sleeve support 52 downwardly. A roller 36 on a lever 32 engages a surface 44 of a cam 42 and is guided into contact with an element 29 by a guide 39 thereby driving the rotary head 19 into contact with the base. The base 11 and arbor 10 are moved laterally by the amount of the clearance 9 so that the rollers 21 and the punch 6 form a projection on the side of the article. As the roller 36 clears the guide 39 it is returned to its original setting by a pusher 59 and springs 12 centralize the arbor. Simultaneously a roller on the end of a lever 33 is guided along the surface 44 of a cam 43 and around a guide 40 so as to clear an element 30. On the upward movement of the slide 2, the roller on the lever 33 engages the element 30 to move the head 20 to form a second projection on the article in a similar manner to the first. Meanwhile the roller 36 moves around the guide 40 so as to clear the element 29. As the rollers move upwardly they engage the cams 42, 43 and pivot them out of their paths against the action of springs. The heads 19, 20 are returned to their inoperative positions by springs and a spring 56 returns the plate 49 to its original position, thereby removing the base from the arbor.