NZ532175A

NZ532175A - Winding tube

Info

Publication number: NZ532175A
Application number: NZ532175A
Authority: NZ
Inventors: Dieter Quick
Original assignee: Kunststoff Spritzgusswerk Ing
Priority date: 2001-10-02
Filing date: 2002-09-25
Publication date: 2006-02-24
Also published as: WO2003031305A1; ATE319644T1; HUP0401792A2; NO20041966L; JP2003176067A; DE50206036D1; RU2301190C9; KR20030028719A; BR0213095B1; TW561129B; EP1434731A1; RU2301190C2; MXPA02009734A; HU225730B1; CN1426949A; ES2258653T3; DE10294560D2; IL161226A0; BR0213095A; PL369070A1

Abstract

Here is provided a winding tube for receiving a strip product. The winding tube comprises a cylindrical elongated hollow body (2) and at least an adapter (4) likewise cylindrical and hollow which is fixed integral in rotation, to the winding tube body (2) through its ends and whereof the external diameter does not exceed that of the winding tube body (2). Moreover the adapter is in contact with a lateral surface of the winding tube body substantially over its entire periphery on an axial portion of the winding tube body. The adapter is designed so that it can be detached from the winding tube body without being damaged.

Description

<div class="application article clearfix" id="description"> JnteHscixia! Property Office of NZ 2,::c2005 532 1 75 Winding tube 0 ? C 5! V E D The invention relates to a winding tube for receiving a strip-like material, especially for the use in the paper or printing industry, comprising a cylindrical elongated hollow tube body and at least one similarly cylindrical hollow adapter, with the adapter being attached in a torsion-resistant manner to the tube body, the outside diameter of the adapter not exceeding that of the tube body, the adapter being in contact substantially over the entire circumference with a jacket surface of the tube body on an axial section of the tube body, the adapter being dismountable from the tube body in a nondestructive way, the adapter comprising on its inner, substantially circular, jacket surface positive-locking elements, with adapter and tube body comprising grooves or teeth in the contact surface which extend in the axial direction, with the inside diameter of the tube body being larger than the inside diameter of the adapter. Such winding tubes are used in the paper industry, especially in the printing industry for receiving paper webs. Winding tubes substantially consist of a cylindrical longitudinal hollow tube body made of paper or paperboard. Tube bodies extruded from thermoplastic material have also been used recently in certain cases. For winding or unwinding the strip-like material, the winding tube is mounted on clamping chucks in a winding machine, which winding chucks engage in the ends of the tube body and allow the introduction of the turning moment through clamps or positive-locking elements. Prior art For paper winding tubes it is known to equip the tube body at the end side with adapters which allow a destruction-free clamping of the relatively soft tube. Frequently, U-shaped cover caps made of metal are used which are placed on the open ends of the tube body. DE 44 13 810 of Sonoco Products Co. describes a ring-like adapter which is glued with an outside surface having the shape of a truncated cone in respectively conically formed inside surface in the open ends of a tube body made of paper. The adapter reinforces the ends of the winding tube on the one hand which are thus better capable of withstanding the tension forces in the winding machine. On the other hand, it allows the use of a winding tube whose inside diameter is larger than the clamping chuck of the winding machine. Even in the case of winding tubes made of paper or paperboard which can be produced relatively inexpensively, there is frequently the need to configure the winding tubes for multiple use in order to avoid the production of waste. In the case of the adapter as proposed in DE 44 13 810, the costs of production both for the tube body and the adapter are increased by using a conical seat. The proposed gluing of the adapter in the tube body prevents the further use of an adapter from a damaged tube body. US Pat. No. 5,595,356 discloses a tube-and-adapter combination for which paperboard tubes are also used and it contains all features of the preamble of claim 1. A gluing of the adapter is omitted in this case, but the paperboard tube needs to be adjusted to the adapter by providing in a matching way two or four recess on each side. The predominant aspect in this case is improving the ease of mounting of the adapter on a wound tube body, especially with respect to creating better visual conditions in producing the clamping. The disadvantageous aspect in the known tube is that its face side is not protected by the adapter. Plastic winding tubes are usually produced from simple materials for cost reasons. They are usually not capable of withstanding the high loads of the clamping chucks however. The production of winding tubes by using high-quality low-wear plastic materials for multiple use is not economically viable as a result of the high cost of the material. US Pat. No. 4,754,537 discloses a production method for a winding tube for fabrics. Tube and adapter are molten together with each other at least superficially according to the prior method in order to allow the transmission of the turning moment from the adapter to the tube. in the field of office technology, a cylindrical ink ribbon winding core for ink-jet printers is known which has been disclosed in DE-U-77 14 640. The two adapter elements are also joined with the tube in a slip-free way by means of the aforementioned tongue-and-groove technique. Object of the invention It is therefore an object of the present invention to provide a winding tube which will go at least some way towards overcoming the foregoing disadvantages in a simple yet effective manner or which will at least provide the public with a useful choice. Solution Based on a winding tube of the kind mentioned above, this object is achieved in accordance with the invention in such a way that the adapter comprises a radially projecting collar whose outside diameter substantially corresponds to the outside diameter of the tube body and the grooves or teeth in the tube body extend over its entire axial length. In addition to the clamping effect in the contact surface of adapter and tube body, the radially projecting collar of the adapter prevents the axial displacement of the components with respect to each other. In this way it is possible to also apply axial forces via the adapter, e.g. for positioning the winding tube on the machine. As a result of the fact that the outside diameter of the collar is adjusted to the outside diameter of the tube body, the outside jacket surface of the collar can also be used as a winding surface. When transporting such a winding tube, the wound strip-like material additionally contributes to the axial fixing of the adapter on the tube body. The non-positive connection of adapter and tube body can be used especially advantageously when the production effort is to be reduced. This can be achieved in a simple manner in such a way that the contact surface is formed as a mere cylindrical surface. When using a cooled adapter in an optionally heated tube body, a torsion-resistant shrinkage pressing can be achieved in the region of the contact surface with the tube body. Especially in the case of low requirements placed on the turning moment to be transmitted, the torsional rigidity can be ensured by roughened surfaces (within the terms of a positive lock at the microscopic level). 3 INTELLECTUAL PROPERTY OFFICE OF N.Z. 20 OCT 200* RECEIVED Recesses on the face side can be incorporated in order to influence the cooling properties of the collar. The introduction of a turning moment at both ends of a winding tube is possible when using two adapters in accordance with the invention. This is especially useful in the case of very long winding tubes as are used in the printing industry for example. Preferably, the adapter is made of a more resistant material than the tube body. The use of high-quality and thus more expensive raw materials such as highly wear resistant plastic materials such as fiber-reinforced polyamide can thus be limited to relatively small components. The adapter can be produced advantageously by an injection molding method. This allows especially the forming of several complex features such as grooves or teeth in the contact surface, a collar with face-side recesses and positive-locking elements on the inner jacket surface in one single pass. In one possible embodiment of the invention of the tube body, the same is made of paper or paperboard, as thus the production costs are kept low on the one hand and recycling materials can be provided for further use on the other hand. The use of tube bodies of higher quality which are made of plastic materials formable in a thermoplastic way is advisable because the shaping of grooves and teeth in the contact surface of the adapter and tube body is particularly simple in such cases. When such tube bodies are produced by extrusion, these positive-locking elements can be shaped on the body directly and extend automatically over the entire length of the tube body. Moreover, it can be produced at random lengths depending on the respective requirement. Description of the preferred embodiment The invention is explained below by reference to an embodiment shown in three views, wherein: Fig. 1 shows a view of the face side of an adapter in accordance with the invention; Fig. 2 shows an axial sectional view through an end of a winding tube in accordance with the invention with a mounted adapter, and Fig. 3 shows a sectional view perpendicular to the axis through a winding tube in accordance with the invention with a mounted adapter. The figures show the following: 1 Winding tube 2 Tube body 3 Outside diameter of the winding tube 4 Adapter 5 Inside diameter of the adapter 6 Inside toothing of the tube body 7 Outside diameter of the inside toothing 8 Inside diameter of the inside toothing 9 Tooth base of the inside toothing 10 Tooth crown of the inside toothing 11 Tooth width of the inside toothing 12 Inclination of the tooth flanks 13 Outside toothing of the adapter 14 Cam 15 Width of the cam 16 Inside diameter of the cam 17 Collar on the adapter 18 Length of collar 19 Face side of adapter 20 Recess 21 Width of recess 22 Depth of recess 23 Mounting incline of tube body 24 Mounting incline on the adapter for mounting on the tube body, and 25 Mounting incline on the adapter for mounting on the clamping chuck. The winding tube 1, whose one end is shown in an exemplary way in the figures, receives a web (not shown) of newspaper of a width of approximately 3 meters in a rotary printing machine (also not shown). The tube body 2, which is extruded from polystyrene with a density of 1.05 kg/dm3 and has an outside diameter 3 of 182 mm, is provided at both ends with two similar adapters 3 which have an inside diameter 5 of 154 mm and which are produced by an injection molding method from glass-fiber-reinforced polyamide with a density of 1.4 kg/dm3. The tube body 2 comprises a trapezoid inner toothing 6 which extends in the axial direction over its entire length and over its entire circumference and which has an outside diameter 3 of 170 mm and an inside diameter 5 of 165 mm. Tooth base 9 and tooth crown 10 of the inner toothing 6 are provided in the circumferential direction with a width 11 of 5 mm. The tooth flanks have an inclination 12 of 39.1°. The inner toothing 6 of the tube body 2 engages in a precisely fitting manner with a radial play of 0.2 to 0.4 mm in the respective mirror-inverted outer toothing 13 of the adapter 3. The adapter 3 is adjusted with three trapezoid cams 14 with a width 15 of 46.5 mm and an inside diameter 16 of 150 mm to a clamping chuck (not shown) which is standardized in a machine-specific way, which trapezoid cams extend in the axial direction and are situated on the inside of said adapter on the circumference offset by 120° each. The adapter 3 is additionally equipped with a circular collar 17 with a length 18 of 20 mm in the axial direction, on which the end of the tube body 2 rests in direct manner. The outside diameter of the collar 17 is adjusted to the outside diameter 3 of the winding tube 1. The face side 19 of the adapter 3 comprises 26 recesses which are evenly distributed over the circumference and have a radial width 21 of 4 mm and an axial depth 22 of 12 mm. For the purpose of facilitating the mounting both of the adapter 3 in the tube body 2 as well as the winding tube 1 on the clamping chuck (not shown), the tube body 2 and the adapter 3 are provided at the lead-in ends with conical mounting inclines 19, 24 and 25. </div>

Claims

1. A winding tube (1) for receiving a strip-like material, especially for use in the paper or printing industry, comprising a cylindrical elongated hollow tube body (2) and at least one similarly cylindrical hollow adapter (4), with the adapter being attached in a torsion-resistant manner to the tube body (2), the outside diameter (3) of the adapter (4) not exceeding that of the tube body (2), the adapter (4) being in contact substantially over the entire circumference with a jacket surface (6) of the tube body (2) on an axial section of the tube body (2), the adapter (4) being dismountable from the tube body (2) in a non-destructive way, the adapter (4) comprising on its inner, substantially circular, jacket surface positive-locking elements (14), with adapter (4) and tube body (2) comprising grooves or teeth (6, 13) in the contact surface which extend in the axial direction, with the inside diameter of the tube body (2) being larger than the inside diameter of the adapter (4), characterized in that the adapter (4) comprises a radially projecting collar (17) whose outside diameter substantially corresponds to the outside diameter (3) of the tube body (2) and the grooves or teeth (6,13) in the tube body (2) extend over its entire axial length.

2. A winding tube (1) as claimed in claim 1, characterized in that the adapter (4) is connected with the tube body (2) in a non-positive way. INTELLECTUAL PRjFERTY OFFICE OF N.Z. 2 5 OCT 2004 RECEIVED "7

3. A winding tube (1) as claimed in the preceding claim, characterized in that the adapter (4) is connected with the tube body (2) in the region of the contact surface by a shrinkage pressing.

4. A winding tube (1) as claimed in at least one of the preceding claims, characterized in that the adapter (4) or tube body (2) has a roughened surface in the contact surface.

5. A winding tube (1) as claimed in at least one of the preceding claims, characterized in that the collar (17) comprises recesses (20) on a face side.

6. A winding tube (1) as claimed in at least one of the preceding claims, characterized in that it comprises adapters (4) at both ends.

7. A winding tube (1) as claimed in at least one of the preceding claims, characterized in that the adapter (4) is made of a more resistant material than the tube body (2).

8. A winding tube (1) as claimed in at least one of the preceding claims, characterized in that the adapter (4) is a made of a highly wear-resistant plastic material.

9. A winding tube (1) as claimed in at least one of the preceding claims, characterized in that the adapter (4) is made from a fiber-reinforced plastic material, especially on the basis of polyamide.

10. A winding tube (1) as claimed in at least one of the preceding claims, characterized in that the adapter (4) is made by way of an injection molding method.

11 .A winding tube (1) as claimed in at least one of the preceding claims, characterized in that the tube body (2) is made in a winding process of paper or paperboard. INTELLECTUAL PROPERTY OFFICE OF N.Z. £lwi 23 OC RECEIVED

12. A winding tube (1) as claimed in at least one of the preceding claims, characterized in that the tube body (2) is made from a plastic material that can be shaped in a thermoplastic way, especially styrene-butadiene.

13. A winding tube (1) as claimed in at least one of the preceding claims, characterized in that the tube body (2) is made by extrusion.

14.A winding tube substantially as described with reference to the drawings. INTELLECTUAL PROPERTY OFFICE OF N.Z. ? nn Wk RECEIVED </div>