DE1923180A1 - Clamping device for winding tubes - Google Patents

Description

Dr. Werner Hassler

^PA ! Nn! Ic ^N r ^W _w ^A pin Lüdenscheid, 5th May 1969 - 5th

588 LÜDENSCHEID. fiqp4p jj;

Asenberg36-Postfach1704 ^{Α Ό} ? <^

Applicant: Erwin Kampf Maschinenfabrik 5286 Bielstein-Mühlen

Clamping device for winding cores

The invention relates to a clamping device for winding tubes with at least one support ring and driver elements for transmission a torque on the winding core.

The clamping device for the winding tube must be able to transmit considerable torques on winding machines of the most varied of types. These occur when using high speeds and with high winding weights, especially when braking. Tilting chips, overrunning clutches, sprag clutches and the like are known as clamping devices and for taking along winding tubes. The clamping devices mentioned can only transmit a torque in one direction of rotation. In addition, these clamping devices are subject to high wear. The wear on the winding core is also great, _{or the like}

The object of the invention is to create a production-wise simple, wear-resistant and reliable clamping device, which ensures a form-fitting and force-fitting driving of the winding core

This object is achieved according to the invention in that in the peripheral surface of the support ring essentially in one Axialabene of the support ring aligned knives are embedded and with the cutting edge from the peripheral surface of the support ring protrude »

The invention proposes knives in the form of roller knives or knife strips _e The setting and holding of the knives is done in each case by wire rings that are in the circumferential grooves of the support ring

009847 / Q4J /

are inserted.

Within each ring arrangement of knives you can use the Circumference of the support ring several knives be distributed. Several input arrangements can also be used over the axial length of the support ring be distributed.

The Äparmvorrichtung according to the invention is made of simple components Manufacture without great difficulty by inserting the knives in the form of roller knives or knife strips in slots of the support ring are inserted and gripped by a wire ring. These cutters can be steel rollers like them are common with glass cutters. The cutting rollers cut each other when a winding tube is attached to the relevant one Support ring in the inner surface of the winding tube, so that a positive and non-positive connection between the clamping device and winding core.

Winding cores are usually made of paper, cardboard, plastic, Wood or a similar material into which the cutting rollers cut easily. Through this formed cutting grooves, however, the material of the winding tube is not affected in an unreasonable manner.

The invention is explained below on the basis of preferred embodiments with reference to the accompanying drawings. They represent:

Figo 1 shows a clamping device according to the invention in a partially broken away view, S ¹ Ig. 2 is a side elevation of FIG. 1 and FIG

3 shows a winding shaft with numerous support rings, which are designed as tensioning devices within the meaning of the invention are.

Fig. 1 shows a driveshaft 1 with a support ring 2 for holding a winding tube 3 'The mandrel 3 consists of paper, cardboard, plastic, wood or the like, _e. The winding tube 3 can be equipped with or without a flange «

0 0 9 8 A 7 / ü A 3 L

The support ring 2 takes the winding tube at one end. At the opposite end of the winding tube is also located a support ring, normally without a clamping device, since this support ring, not shown, is not driven «.

As a tensioning device, the invention proposes a first embodiment of roller knives 4-, which are aligned with the plane spanned by the respective cutting edge in an axial plane of the support ring 2, as can be seen in particular in FIG inserted. A circumferential section of the cutting edge of each rotary knife 4- protrudes from the circumferential surface of the support ring 2 _o For the storage of the rotary knife, the invention proposes a wire ring 6 in an appropriate design _v which in each case extends through a central passage of each rotary knife 4- and in a circumferential groove 7 of the support ring 2 is "

According to a further embodiment, the invention proposes knives in the form of knife strips, cf. Fig. 3 left part « There 5 male connectors 15 are also inserted in axial grooves, whose cutting edge comes from the circumferential surface of the support ring 9! protrudes. The male connectors 15 can be pressed into the axial grooves 5. For additional protection of the male connectors they can be gripped by one or more wire rings 6, which are inserted in circumferentials 7 »

The axial length of each support ring is determined by the size and weight of the core and the roll to be accommodated usually determined «, depending on the transferable Torque is the number of ring arrangements of the knives as well as the number of knives within each ring arrangement fixed

pie Fig. 1 and 2 figs a clamping device with two ring 'arrangements and four roller knives within each ping arrangement. The outer circumference of the support ring 2 is chosen to be 009847/0432

BATH ORIGINAL

that the respective winding tube fits easily over it. When attaching the winding tube 3, the roller knives intersect or male connectors with each from the circumferential surface. protruding cutting edges in the inner wall of the winding tube a «, These slots provide a form-fitting connection between the support ring 2 or the drive shaft 1 and the winding tube 3 safely <> This creates a force-fit Transmission of the torque allows.

The clamping device according to the invention enables transmission of the torque in both directions of rotation, so that this clamping device can be used both for starting and for the winding drive and is equally suitable and useful for braking the roll. The ones caused by the cutting edges Slits in the inner wall of the winding tube have only a slight effect on the winding tube, in particular because it is a winding tube is only used repeatedly to a small extent. Often, winding cores are only used once

The clamping device according to the invention can be adapted to winding tubes of any size. The torque to be transmitted can also be used control yourself within wide limits.

An application of the invention is shown in Fig. 3, which shows a schematic view of a winding shaft 8 with a plurality of support rings 9, each of which can be taken along via friction bodies 10 with an adjustable coefficient of friction. Details of these winding shaft and the mutual support of said support rings 9 by bearings are not explained ₀ Each support ring 9 is provided with a clamping device according to the invention inform of roller blades 11, each of which is taken by a wire ring 12 which is inserted into a circumferential groove 13 »

On the support rings 9 winding sleeves 14, 14 ¹ , 14 "are plugged, each of which has a different axial length. The winding sleeve 14 fits exactly on one support ring, the winding sleeve 14 'on two support rings, the winding sleeve 14" on three support rings,

Ö0 98A7 / 0432

This arrangement according to the invention results in an automatic one Adaptation of the transmittable torque to the size of the winding tube, as a longer winding tube is in the clamping devices engages several support rings.

When using "male headers" one is generally referred to can transmit a greater torque to the individual male connector, because the length of attack of the respective Knife edge is larger «, The size of the torque to be transmitted however, by means of the number of individual knives, it can be tailored to any desired within the required range Set the value, roller knives will generally allow the winding tube to be attached particularly easily.

In particular with winding shafts of the type shown in FIG. 3, the invention brings a considerable improvement, since all winding tubes can be pushed from one end of the winding shaft over the entire support ring arrangement without additional auxiliary or fastening devices having to be actuated. It is also not necessary to precisely align or set the winding tubes in the axial direction of the winding shaft, since the winding tubes can easily support each other or on neighboring support rings _o

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Claims (3)

13931 to -6 claims 1. Clamping device for winding tubes with at least one support ring and driver elements for transmitting a torque to the winding tube, characterized in that in the circumferential surface of the support ring (2) substantially aligned in an axial plane of the support ring knife (4, 15) are embedded and with the cutting edge protrude from the circumferential surface of the support ring _o 2 _O clamping device according to claim 1, characterized by knives in the form of hollow knives. 3. Clamping device according to claim 1 or 2, characterized in that that the roller knife (4-) are rotatably mounted on a wire ring (6) which is in a circumferential groove (7) of the support ring (2) is inserted. 4 _e clamping device according to claim 1, characterized by knife strips (15) which are inserted into axial grooves (5) of the support ring (9 ¹ ). 5e clamping device according to claim 4, characterized in that the knife strips (15) are secured by wire rings (6) which are ^{inserted in circumferential grooves (7) of the support ring (9 1} ). 6 «clamping device according to one of claims 1 to 51 characterized characterized that within a ring arrangement of knives several knives are distributed over the circumference of the support ring » 7e clamping device according to one of claims 1 to 6, characterized by several ring arrangements distributed in the axial direction of the support ring. IJ098A7 / Ü4TZ