A crimping unit (1) having a first plate (10); a first lever (50) equipped with a winding wheel (54), a second lever (60) equipped with a crushing wheel (64), a winding actuator connected to the first lever (50), and a crushing actuator connected to the second lever (60). The winding actuator and the crushing actuator are governed by an electronic control unit (7) to vary the distance between the winding wheel (54) and/or the crushing wheel (65) of the first axis according to the angular position of the first plate (10) around the first axis.

A tool for curling of can necks as part of a tool plate that includes an expansion control device for controlling of the spreading of a collet, a collet clutch, an interconnecting means provided with a stop mechanism, and a holder being fixed in the collet clutch at its one end, the collet being arranged on its other end, the collet in the non-active position being insertable into the can to permit segments of the collet to spread in the direction of the device.

An apparatus for forming a curl on an article includes a first forming tooling having a first set of rollers mounted on a common head. The first set of rollers has a respective groove having a first groove radius. The apparatus further includes a first rotating turret configured to load the article into the first forming tooling. The apparatus further includes a second forming tooling having a second set of rollers mounted on a common head. The second set of rollers has a respective groove having a second groove radius. The second groove radius is larger than the first groove radius. The apparatus further includes a second rotating turret configured to load the article into the second forming tooling. The apparatus further includes a first transfer star wheel configured to transfer the article from the first rotating turret to the second rotating turret.

Generally, the instant disclosure is directed towards various methods of EMF-forming workpieces and the resulting workpieces. More specifically, the instant disclosure is directed towards various embodiments of imparting EMF-features onto workpieces, where workpieces with resulting EMF-features are configured as metal containers.

A device and method for manufacturing a battery cell. The device includes: a roller moving mechanism, configured to control a first roller to move in a direction of a central axis of a battery cell, where the battery cell includes a case and a cover plate, the case and the cover plate being hermetically connected and forming a rolled edge structure that is turned outwards; and the first roller, configured to squeeze, when the roller moving mechanism controls the first roller to move in the direction of the central axis of the battery cell, the rolled edge structure by a first processing surface, to cause the rolled edge structure to be inclined in a direction close to the central axis of the battery cell.

A spindle rotation unit includes: a plurality of attachment portions that are arranged in a base; a spindle that is rotatably attached to any one of the plurality of attachment portions; a motor plate that is attached to the base; a motor attachment flange that is attached to the motor plate; a driving motor that is attached to the motor attachment flange; and a transfer member that connects the driving motor and the spindle and transfers a rotational driving force of the driving motor to the spindle. The motor attachment flange is provided with an opening portion through which the transfer member is inserted and the motor attachment flange is disposed in the motor plate to allow its position to be adjustable so that the opening portion is opened toward a predetermined attachment portion to which the spindle is attached among the plurality of attachment portions.

An apparatus for forming a curl on an article includes a first forming tooling having a first set of rollers mounted on a common head. The first set of rollers has a respective groove having a first groove radius. The apparatus further includes a first rotating turret configured to load the article into the first forming tooling. The apparatus further includes a second forming tooling having a second set of rollers mounted on a common head. The second set of rollers has a respective groove having a second groove radius. The second groove radius is larger than the first groove radius. The apparatus further includes a second rotating turret configured to load the article into the second forming tooling. The apparatus further includes a first transfer star wheel configured to transfer the article from the first rotating turret to the second rotating turret.

To obtain a shape for preventing a blocking phenomenon in a stacked state. In a metal container according to the disclosure, an opening portion includes a curled portion or a flange portion that is curved outward. The inner surface of the opening portion includes an inner surface contact portion that comes into contact with an outer surface contact portion provided at the outer surface of a sidewall portion when stacking the metal containers. A holding portion formed by causing a periphery of the sidewall portion to bulge outward is provided between the outer surface contact portion and the inner surface contact portion, and a sidewall portion is provided at the outer surface of the holding portion.

A method of forming a metal container comprises: curling outward a top edge of the metal container to form a curl and expanding a diameter of a first section of the metal container to form a first expanded section; wherein at least part of the first expanded section is below the curl. In some embodiments, the steps of curling outward a top edge of the metal container to form a curl and expanding a diameter of a first section of the metal container to form a first expanded section are performed in a single stroke of a single die. In some embodiments, the step of expanding a diameter of a first section of the metal container to form an expanded section is performed after the step of curling outward a top edge of the metal container to form a curl.

Bottles with inwardly curled upper portions at the bottle opening and methods and tooling for producing such bottles. The inwardly curled upper portions impart compressive stresses into the bottle material and can reduce a likelihood of material splitting because the upper portion may not be stretched to a larger outer diameter as with outwardly curled upper portions. The inwardly curled upper portions may be formed using rollers with an entry radius positioned near an outside diameter of the bottle opening. The inward curl is formed as the bottle material enters the rollers near an entry face of the rollers, transitions through a work face of the rollers, and exits the roller at an exit face of the rollers. The resulting inward curl meets the edge of the bottle material near the inner surface of the bottle.