Abstract: Disclosed herein is an auxiliary equipment for removing parts including a cover feed turret, which has been vertically detachably installed by a screw member on a can end double-seaming machine for seaming a can end on a can body, from the double-seaming machine, or installing such parts on the double-seaming machine. The auxiliary equipment comprises a swinging member supported below the cover feed turret and horizontally swingable to under a screwing position of the screw member; the first pedestal replaceably positioned on the swinging member, on which the cover feed turret can be placed when the swinging member is swung to the screwing position of the screw member; and the second pedestal replaceably positioned on the connecting member, on which a cover guide can be placed.

Abstract: A can end double-seaming machine has a housing in which a shaft is rotatably supported. The shaft with a seaming cam lever mounted is pressed downwardly by a presser against the bias of a spring until the lower surface of the seaming cam lever is held against the upper surface of the housing. Then, an annular spacer is fitted over the lower end portion of the shaft underneath, with the tubular support held against a neck of the shaft. A seaming roll lever is then mounted on the lower end portion of the shaft. The presser is deactivated to release the shaft, which is lifted together with the seaming cam lever, the annular spacer, and the seaming roll lever under the bias of the spring until the marginal portion of the annular spacer abuts against the lower surface of the housing. The tubular support enters the housing by a distance corresponding to a predetermined clearance. The seaming cam lever and the housing are now spaced from each other by the predetermined clearance.

Abstract: A can end double-seaming machine has a seaming head vertically movably mounted on a base and supporting a seaming chuck and a seaming roll. The seaming head is guided for its vertical movement by support posts on the base. Rotors are rotatably threaded on the support posts and rotatable by a motor for lifting and lowering the seaming head. A controller controls the motor to elevate the seaming head upwardly of a predetermined seaming position, then lower the seaming head downwardly of the seaming position, and thereafter elevate the seaming head to the seaming position, thereby positioning the seaming head in the seaming position. Since the seaming head is lowered downwardly of the seaming position and then lifted back to the seaming position, the seaming head is reliably and accurately be brought into the seaming position without a positional error which would otherwise be caused by the backlash between the rotors and the support posts.