A method for monitoring. seaming tools of a sealer includes providing the sealer with a seaming tool to attach a lid to a container and a controller to control and monitor the sealer, the seaming tool including an identification element by which the seaming tool is capable of being uniquely identified, identifying the seaming tool by the identification element, storing the identification of the seaming tool in the controller, and monitoring a number of containers sealed by the seaming tool by the identification stored in the controller.

A seaming shaft arrangement for a sealer for attaching a can lid to a can body. The seaming shaft arrangement includes a seaming head, an ejection rod, an ejection head arranged on the ejection rod and movable with the ejection rod relative to the seaming, and a spring assembly by which the ejection head is resiliently mounted on the ejection rod. The spring assembly includes a slider arranged movably in the axial direction on the ejection rod, and a first elastic element arranged between a first abutment surface of the slider and a first supporting surface of the ejection rod, and a second elastic element arranged between a second abutment surface of the slider and a second supporting surface of the ejection head.

A seaming shaft arrangement for a sealer for attaching a can lid to a can body. The seaming shaft arrangement includes a seaming head, an ejection rod, an ejection head arranged on the ejection rod and movable with the ejection rod relative to the seaming, and a spring assembly by which the ejection head is resiliently mounted on the ejection rod. The spring assembly includes a slider arranged movably in the axial direction on the ejection rod, and a first elastic element arranged between a first abutment surface of the slider and a first supporting surface of the ejection rod, and a second elastic element arranged between a second abutment surface of the slider and a second supporting surface of the ejection head.

A seaming shaft mechanism for a sealer for the attaching of a can lid to a can body includes a seaming shaft rotatable around a seaming axis, a seamer arranged at one end of the seaming shaft; as well as a sensor for the monitoring of the seaming process during the attachment of the can lid to the can body. The sensor is arranged at the seaming shaft such that the seaming process can be monitored by the sensor via a measurement of a displacement of the seaming shaft relative to the seaming axis or via a measurement of a torsion of the of the seaming shaft.

A seaming shaft mechanism for a sealer for the attaching of a can lid to a can body includes a seaming shaft rotatable around a seaming axis, a seamer arranged at one end of the seaming shaft; as well as a sensor for the monitoring of the seaming process during the attachment of the can lid to the can body. The sensor is arranged at the seaming shaft such that the seaming process can be monitored by the sensor via a measurement of a displacement of the seaming shaft relative to the seaming axis or via a measurement of a torsion of the of the seaming shaft.

A method for forming a curl on an open end of a metal container, for adapting the metal bottle to be closed by a cap, comprising in sequence: inserting the open end of the metal container into a powered first curler roller housing, wherein the first curler roller housing houses a set of first curler rollers, to deform the open end by turning it outwardly so as to obtain a first stage curl; inserting the open end of the metal container having the first stage curl into a powered second curler roller housing, wherein the second curler roller housing houses a set of second curler rollers, to further deform the open end and first stage curl by turning them outwardly and/or curling them so as to obtain a second stage curl; inserting the open end of the metal container or bottle having the second stage curl into a powered third curler roller housing, wherein the third curler roller housing houses a set of third curler rollers, to further deform the open end and second stage curl by turning them outwardly, curling them and/or compressing the second stage curl radially and/or longitudinally downward towards a bottom of the metal container so as to obtain a third stage curl.

A multi-roller system includes at least two pairs of rollers, in which the at least two pairs of rollers rotate about independent rotation axes, respectively. Changes in heights of the at least two pairs of rollers are controlled. Cross-sections of the at least two pairs of more of rollers have different shapes. The at least two pairs of rollers approach and press the battery can at intervals between the at least two pairs of rollers.

A multi-roller system includes at least two pairs of rollers, in which the at least two pairs of rollers rotate about independent rotation axes, respectively. Changes in heights of the at least two pairs of rollers are controlled. Cross-sections of the at least two pairs of more of rollers have different shapes. The at least two pairs of rollers approach and press the battery can at intervals between the at least two pairs of rollers.

Sets of apparatus for translating motion from a rotating non-circular loop to linear motion and in possible cases vice versa. Such mechanisms are used in muffler cap spinning technology and engine crankshaft with uneven strokes; but not restricted to said applications. The mechanisms include a non-circular cam, a linear sliding arm or piston and parts to connect them. Disclosure also includes an adjustable closure for a sliding arm which could be utilized for said muffler cap spinning mechanisms or other applications.

Sets of apparatus for translating motion from a rotating non-circular loop to linear motion and in possible cases vice versa. Such mechanisms are used in muffler cap spinning technology and engine crankshaft with uneven strokes; but not restricted to said applications. The mechanisms include a non-circular cam, a linear sliding arm or piston and parts to connect them. Disclosure also includes an adjustable closure for a sliding arm which could be utilized for said muffler cap spinning mechanisms or other applications.