Method and an apparatus for winding up round material on a drum provided with terminal flanges

• US 5,564,637 A
• Filed: 12/20/1993
• Issued: 10/15/1996
• Est. Priority Date: 12/22/1992
• Status: Expired due to Term

• Current Assignee: MAG Maschinen und Apparatebau GmbH
• Original Assignee: MAG Maschinen und Apparatebau GmbH
• Inventors: Pichler, Hans-Peter, Berthold, Herbert
• Primary Examiner(s): Mansen, Michael R.
• Application Number:
  US08/170,115
• Time in Patent Office: 1,030 Days
• Field of Search: 242/158.2, 242/158 R, 242/157.1, 242/25 R, 242/7.14, 242/7.15, 242/7.16
• US Class Current: 242/477
• CPC Class Codes: B65H 54/2803 with a traversely moving package
• CPC Class Codes: B65H 54/2851 by pressing the material being wound against the drum, flange or already wound material, e.g. by fingers or rollers; guides moved by the already wound material B65H54/2869 takes precedence
• CPC Class Codes: B65H 54/2872 by detection of the incidence angle
• CPC Class Codes: B66D 1/38 by means of guides movable relative to drum or barrel

Abstract

A pressure roller in a winding machine is axially shifted in accordance with the progress of winding so that the winding turns are tightly engaged with each other. At the end of a winding layer, the pressure roller is positioned adjacent a flange of the winding drum at a spacing distance equal to 1.5 times the diameter of the round material, so that the next winding layer is wound in the channels between winding turns of the first layer. The pressure roller and the winding drum are axially shiftable independently of each other, thereby providing centering of the drum with respect to the in-feed material and orderly reversal of winding action after each winding layer has been completed. The method and the apparatus are particularly suitable for thick round material which is hard to flex, such as solid or stranded wire or cable.

Claims

1. A method for winding round material on a winding drum between first and second terminal flanges characterized by the following steps:

(a) supplying the round material to the drum;

(b) engaging the pressure roller laterally against the round material;

(c) rotating the winding drum without axial displacement thereof and shifting the pressure roller axially toward one terminal flange by an amount approximately equal to the diameter of the round material per rotation of the winding drum;

(d) interrupting the axial shifting movement of the pressure roller at a predetermined angle between the supplied round material and the rotational axis of the winding drum and displacing the winding drum axially towards the last produced winding turn by an amount exceeding the diameter of the round material per revolution of the winding drum;

(e) repeating steps (c) and (d) until the spacing distance of the pressure roller from said one terminal flange of the winding drum is equal to approximately 1.5 times the diameter of the round material;

(f) axially displacing the winding drum and the pressure roller toward the last produced winding turn by an amount equal to the diameter of the round material;

(g) increasing the axial displacement of the winding drum and of the pressure roller, after the winding has reached said one flange of the drum, until the supplied round material is at substantially a right angle to the axis of the winding drum;

(h) interrupting the axial displacement of the winding drum and of the pressure roller during one rotation of the winding drum, during which time the round material is wound between said one flange of the winding drum and the pressure roller thus producing the last turn of the first winding layer;

(i) winding the round material into the channel between the last and the penultimate turns of the first winding layer; and

,

(j) repeating the steps (c) through (i) with an opposite direction of axial displacement of the winding drum and pressure roller for winding the next layer.

2. The method as defined in claim 1, characterized in that in step (c) the winding drum is displaced axially in a direction opposite to the pressure roller and at a lower speed relative to the axial displacement speed of the pressure roller, wherein the sum of the displacement strokes of the winding drum and the pressure roller per revolution of the winding drum is substantially equal to the diameter of the round material.

3. Apparatus for taking round material from a supply and winding the round material fed on a winding drum provided with first and second terminal flanges, comprising:

a drive motor coupled to the winding drum for rotating the drum in the direction of winding up;

sensor means disposed at a predetermined limit position between the supply and the drum and proximate the supplied round material for generating a sensor limit signal corresponding to a predetermined angular position of the supplied round material relative to the rotational axis of the drum;

means coupled to the drum for axially shifting the winding drum in response to a sensor limit signal;

a pressure roller disposed in resilient engagement against either the periphery of the winding drum or against an initial winding layer; and

a traverse coupled to the pressure roller for guiding the pressure roller against a winding turn of the supplied round material as it is wound on the drum, and for axially shifting the pressure roller independently of the drum.

4. Apparatus as defined in claim 3, characterized in that the pressure roller comprises a circular disk which is journalled for rotation so that its axis of rotation is parallel to the axis of rotation of the winding drum.

5. Apparatus as defined in claim 3, characterized in that the sensor means comprises first and second sensors disposed at laterally opposite positions relative to the supplied round material for detecting movement of the round material proximate first and second lateral limit positions, respectively.

6. Apparatus as defined in claim 3, characterized in that the sensor means comprises first and second optical sensors.

7. Apparatus as defined in claim 3, characterized in that the sensor means comprises first and second electrical proximity sensors.