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Rewinding machine and method for controlling the speed of the motors in a rewinding machine

A rewinding machine, speed technology, applied in the direction of winding strips, thin material processing, function indication, etc., can solve problems such as loss of looseness

Active Publication Date: 2021-07-23
A CELLI PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This means that a prior art rewinder causes a delay between the start of the reel and reaching the maximum operating speed and subsequently between the start of the deceleration ramp from the operating speed and the stop of the rewinder at the completion of the reel. Excessive loss of looseness

Method used

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  • Rewinding machine and method for controlling the speed of the motors in a rewinding machine
  • Rewinding machine and method for controlling the speed of the motors in a rewinding machine
  • Rewinding machine and method for controlling the speed of the motors in a rewinding machine

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Embodiment Construction

[0039] The following detailed description of embodiments given by way of example refers to the accompanying drawings. The same reference numbers in different drawings identify the same or similar elements. Furthermore, the drawings are not necessarily drawn to scale. The following detailed description does not limit the invention. Rather, the scope of the invention is defined by the appended claims.

[0040] References in the specification to "one embodiment" or "the embodiment" or "certain embodiments" mean that a particular feature, structure, or element described with respect to an embodiment is included in at least In one embodiment. Thus, the phrases "in one embodiment" or "in said embodiments" or "in some embodiments" used in the specification do not necessarily refer to the same embodiment or embodiments. Furthermore, the particular features, structures or elements may be combined in any suitable manner in one or more embodiments.

[0041] first reference figure 1...

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Abstract

The rewinding machine (1) comprises: a winding station (3) with winding members (5, 7) operated by winding motors (8.1, 8.2); an unwinder (31.1, 31.2) with an unwinding member (35.1, 35.2) operated by at least one unwinding motor (38.1, 38.2); a guide roller (43.1, 43.2) along a feed path (P) of the web material (N, N2). There is associated with the guide roller (43.1, 43.2) at least one load sensor (42.1, 42.2), adapted to detect a parameter proportional to the tension of the web material (N; N2) guided around the guide roller (43.1, 43.2). There is also provided a control unit (71) adapted to modulate a difference in speed between the winding members (5, 7) and the unwinding member (35.1, 35.2) as a function of a signal coming from the load sensor (42.1, 42.2).

Description

technical field [0001] Disclosed herein are winders and methods for winding web materials, particularly single or ply cellulosic materials such as tissue paper. The described embodiments relate in particular to methods and machines for forming tissue rolls. Background technique [0002] One of the characteristics of tissue paper used to produce napkins, toilet paper, kitchen paper, handkerchief paper and the like is creping. Creping is the creping of the product, in continuous papermaking machines for the production of tissue paper, by creping doctor blades acting in conjunction with Yankee dryers or cylinders and due to the The crepes are produced by a speed difference of , the winding rolls of which receive the continuous cellulose layer from the production machine and wind it into a primary or so-called parent or jumbo roll. [0003] For some products reaching the end consumer even higher creping levels of about 18%-25% are required. [0004] The greater the creping, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H23/18
CPCB65H23/1806B65H2301/41485B65H2513/11B65H2515/31B65H2557/264B65H2701/1924B65H2553/21B65H2220/01B65H2220/02
Inventor F·斯佛兹
Owner A CELLI PAPER