A method for producing a steel tube including the step of the manufacturing a steel tube having an inner tube wall, an outer tube wall, and a free tube cross-section enclosed by the inner tube wall, wherein after the manufacturing, the steel tube includes at least one contaminant on the inner tube wall. After the manufacturing of the steel tube, the inner tube wall is cleaned by introducing liquid or solid CO.sub.2 into the free tube cross-section, and of applying the liquid or solid CO.sub.2 onto the inner tube wall to remove the contaminant therefrom.

Aspects of the present innovations relate to an auxiliary device for aligning a winding sleeve particularly on a sleeve acceptance of a winding machine with a reference. In one illustrative implementation, an auxiliary device may comprise an auxiliary body with an stop device or stop means which is configured for contact with the counter stop device or counter stop means at the winding sleeve. According to further aspects, the present innovations may comprise a method for aligning a winding sleeve with a reference.

A fabric roll is produced by winding a fabric (4) around at least two reels, that are coaxially aligned, spaced from each other, and have a total length (L) that is less than the width (Wr) of said fabric roll (11).

Aspects of the present innovations relate to an auxiliary device for aligning a winding sleeve particularly on a sleeve acceptance of a winding machine with a reference. In one illustrative implementation, an auxiliary device may comprise an auxiliary body with an stop device or stop means which is configured for contact with the counter stop device or counter stop means at the winding sleeve. According to further aspects, the present innovations may comprise a method for aligning a winding sleeve with a reference.

A core box with interchangeable rails for holding a variety of sizes of cores.

A winding device for winding a web-shaped material, preferably a plastic film, has a reel for receiving the web-shaped material, a contact roller for feeding and pressing the web-shaped material against the reel, a device for rotationally driving a still empty reel, and a device for feeding the still empty reel to the contact roller. The device for rotationally driving the still empty reel and the device for feeding the still empty reel to the contact roller can act simultaneously on the still empty reel.

A core box with interchangeable rails for holding a variety of sizes of cores.

The invention relates to a reel handling system for a winder (50), in which bobbins (1) with a material web (2) can be applied, with the result that a plurality of reels (3) which are wound on the bobbins (1) with a material web (2) are produced, having a feed unit (10), in order to transfer a plurality of bobbins (1) to a receiving unit (20), wherein the receiving unit (20) is arranged movably between the feed unit (10) and a transfer station (60), by way of which receiving unit (20) bobbins (1) can be transferred to the winder (50) and reels (3) can be transferred from the winder (50) to the transfer station (60), wherein a positioning device (80) is provided between the transfer station (60) and the feed unit (10), which positioning device (80) brings about positioning of the bobbins (1) during the movement of the receiving unit (20) in the direction of the transfer station (60).

A roll transfer device and method is provided, which makes it easy to recognize a unique identification code for a material wound on a roll while quickly and accurately aligning a position of the roll. The roll transfer device comprises a pair of holding units disposed to be spaced apart from each other in a first direction, supporting a roll core seated thereon; and a pair of rotation units disposed on both sides of the roll core along the first direction, wherein the pair of rotation units linearly move in the first direction and are inserted into the roll core seated on the holding unit to align a position of the roll, include one or more keys coupled to one or more key grooves formed in the roll core, and are rotated in a state that they are inserted into the roll core, so that the key is coupled to the key groove, thereby rotating the roll.

Disclosed in the present application are an automatic roll replacing device, and winding equipment. The automatic roll replacing device includes: a mounting frame; an unwinding mechanism, including an unwinding shaft rotatably connected to the mounting frame around its own axis; a spare material mechanism, including a spare material shaft having a contact end and a material pushing member providing an axial pushing force for a spare material roll on the spare material shaft, the spare material shaft being rotatably connected to the mounting frame around the rotation axis, and the material pushing member being controlled to push the spare material roll on the spare material shaft to transfer to the unwinding shaft; and a strip connection mechanism, provided on the mounting frame, and used for cutting off a work material strip unwound from the unwinding shaft and connecting the cut-off work material strip to the spare material roll.