DE1760916A1 - Yarn heating device - Google Patents

Description

PATiNTANWXlTE DR.-ING. H. FiNCKE DlPL.-ίΝ G. H BOHR DIPL.-ING. S. STAEGER

MÖNCHEN 5 MOLLERSTR.i1

β. July »S3

Folder 21700 - Dr.K / hr Dase PC.20379

IMPERIAL CHEMICAL IHBIJSTHIES LIMITED London S.W. 1 / Great Britain

GarnerhitsBung

Bvurx

iohtung

Priority from July 19, 1967 - Großbrc

The invention relates to a heating device for running yarns.

Heaters form an important part of devices for treating running yarns, such as devices for hot relaxation or twist fixing of synthetic yarns consisting of endless threads.

Because of the improvements to the treatment devices

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And the winding devices for yarns of the DareheatB are constantly increasing, there is a need for a more effective er * heating of the gladly, which however at the high running speed! can only be achieved by extending the heater can be.

In order to counter the use of excessively long heaters, it is already known to provide at least one reversal of the direction of the yarn as it passes through the heater, the yarn being passed around a boll at one end of the heater so that at least two lengths of the running yarn can be heated . The heating can take place by radiation and convection or by contact with two heating plates which form the sides of the heater, it being possible for the plates to be foldable so that the threading or laying around of the yarn is made easier. Said roller can be moved, for example with a mechanism comprising an endless chain, from the underside of a vertically arranged heater, around which the yarn or yarns are to be wrapped, to the upper working layer, the yarn paths extending up and down the heater , '

It has now been found that the use of a Contact heater with two surfaces, with a single one

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inner element or another thermal circulation unit is arranged in between, brings advantages ". Pas threading or wrapping the yarn around one however, such a heater causes difficulties! if this is very long, as it is not possible to thread or Laying the yarn around by simply worshiping a role to compete β

The present invention "relates to a two-sided Xon ~ cycle heater, which has a device for automatic threading or laying around one or more yarns *

The subject of the invention is therefore a yarn heating device, consisting of an elongated upright heating part, the outer surfaces of which are suitable for contact with a * running yarn or with running yarns Λ

are, a device for the supply of heat to the Heating part, and a hatched roller that placed at the top and in the middle of the heating part is, characterized in that an endless K * tte for a circular movement around the heating part and the roller attached in a plane parallel to the longitudinal extension of the same is that one arm is attached vertically to the endless chain with which it moves, that two one horizontally spaced hook-shaped thread guide

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gen for each one do the heating part to lay around β Thread are attached, the hook-shaped PadenfUhrungen with their openings facing upwards when the arm is up moved upward tand that fixed thread guides are attached to the lower end of the heating parts, which the yarn or yarns in and out of the contact with the lower end part of the heating part.

In an expedient manner, said firing part has a heating element two flats mounted back to back. Preferably there is the device for the supply of heat to the Panels in a single electrical resistance heater,

preferably which is arranged in between. Furthermore, the flatten / Pie equipped with a slightly convex surface, for example, corresponds to a convex curvature of the surface Radius of curvature of 42.67 m with a heater core of 1.82 m.

However Although cum as means! Wearing the ElofUdelarms, which can move in a circular motion around the Erhitzungeeinrichtung given an endless chain, but it should be noted that each endless belt instead of a chain can be used "A chain 1st the zweckmäselgste form this type of transport device.

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With a special use of a yarn heating device According to the invention, two are running in parallel Threads threaded in such a way that they are in two hats lying next to each other along the outwardly facing surfaces of the heating part in opposite directions and around two grooves provided next to each other in the roller walking around. In this case, the strands will be individual a false twist in opposite twisting directions issued which twist is fixed by the heat from the heating device »

In this case, the cantilever arm has two pairs of hook-shaped thread guides, one pair for each a thread »

Each pair of these hook-shaped thread guides cooperating with the fixed thread guide leg direction, so that bulges are formed in each stringing, welcha bulges are then duroh increases the AufWörtsbewegung of the cantilever, Venn the endless chain in. A circular movement is brought "

Ea does not matter whether a single thread or: ' several strands of thread laid down around the heating device or should be threaded or * should, the

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the automatic threading part of the device is the same. In doing so, the running yarn or the running delights become through the fixed thread guiding device, which can guide the thread or threads into contact with the heated plate that is to be touched when the thread or threads move upwards, then one or more inner hook-shaped thread guides on the arm, which is located at the level of the lower end of the heated plates and at the starting point for the upward movement on its circular movement, from there outwards to one or more hook-shaped thread guides, which are also seen on the arm and preferably guided around a further fixed thread guide device, the latter being designed in such a way that it holds the thread or threads outside of contact with the hot plate which is to be touched by the thread or by the thread during the downward movement.

After the threading has been as examples, carried out using a portable Saugplstole, a Kettenantrlebemeohaniemue as Z ₀ is as an electric motor switched on, the xrlngt the endless chain in a circular motion. The bulge or bulges of the yarn are then slowly pulled open, with one side of the same

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is passed across the side of the heating device and the other is guided parallel to the heated plate that • during the downward movement through the yarn or through the Yarn to be touched.

Has Once the cantilever its Aufwärtsbe ~ we gear finished, and then moves to the grooved roll at the top of the heater, then polishes the yarn or fall, the yarns from the open _f now downwardly directed side of the hook-shaped thread guides out and fall into the corresponding hat or the corresponding herding provided with hats roll _e in this Yteise threading or around exposure of the yarn is automatically accomplished.

For example, if two strands of thread are threaded at the same time should be, as is the case with the above-mentioned false twisting process of the Pail, then the lateral distance is of the two inner hook-shaped thread guides equal to that of the grooves in the grooved one Bolle and in the heated plates.

By suitably shaping the hook-shaped thread guides _t by selecting the strength of the curvature at the hook ends accordingly, it is possible to use the inner

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and adjust outer guides in such a way that ensured is that the outer guides of the yarn do not let go until the cantilevered arm over the Zenith of the circular movement (for example 60 °) and is thus in a position that the yarn of the inner guides can be released

In practice this means that the inner guides do not have any bent-back hook ends, while the outer guides have a back curvature (of for example 60 °).

A lifting mechanism is used to stop the chain drive and thus to terminate the circular movement of the cantilevered arm when the latter is back in the vicinity of the Reached the bottom of the heater

So that the two strands of thread during the threading and during the automatic laying of the thread around the heating *; devices do not touch each other, it is necessary, the hook-shaped thread guides and the fixed FadenfUhrungseinrichtung in a corresponding manner to order

So the two groups should be fixed

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devices have a distance with respect to the height al β also in the string direction corresponding to the depth of the heating device, the supply line thread guide device being lower than the discharge device ₀

Similarly, the two outer ones of the hook-shaped Guides on the cantilever arm have a distance from one another in terms of height, the lower lying sideways inward by a small amount. Also, a collaborative couple should be inner and outer hook-shaped thread guides in the depth direction be a short distance from the other cooperating pair.

In addition, a guide rail can be installed on and along the be arranged lower part of the side of the heating device, with its end curved outward, so that it extends perpendicularly therefrom at a height just above the upper fixed thread guide device to to keep the strings off an insulating cover that runs down the length of the side of the heater "and so on." keeping the strands apart in the threading position to support ο

Preferably, the grooves have on the grooved

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- ίο -

Role starting from the outside an inclination of for example 45 ° and ending in rectangular troughs.

The invention will now be explained in more detail with reference to the accompanying drawings.

In the drawings show: Fig. _A 1 is an oblique side view of a device according to the invention

Yarn heating device j and FIG. 2 shows a section on the line A-A of FIG. 1.

According to the drawing, an elongated and upwardly extending heating part 1 has a plate with two surfaces (or 2 plates which are fastened back to back), which can be heated by an internal electrical resistance device (not shown) and two grooved outer surfaces, over which two yarns T ₁ and T _{2 t} in contact with the grooves 3 can run. 5 A protective device 7 is arranged in front of the heating part 1 «

On the back of the heating part 1 are sprockets 9, 11, around which an endless chain 13 is driven in a circular movement around the heating part 1 can. A chain guard 15 is between the

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heating part 1 and the chain sprockets arranged »One grooved sleeve 16 is at the top of the heating section 1 attached Of the grooved roller 16, only the upper part can be seen.

A cantilever arm 17 is attached to the endless chain 13 so that it can move with the chain. 3r is shown in the threading position on the underside of the heating device with solid lines and is shown in two further positions on the circular movement in dashed lines? one of the layers is shown at half the height of the device on the right side and the other is shown _s immediately after the arm 17 is passed through the zenith of the circular motion ·

Two pairs of hooks and straight thread connections 19 »19 'and 21, 21 ^! are attached to the cantilevered arm 17, the outer _s namely the guides 19 'and 21' are attached to a transverse beam 23 at the end of the arm _o This "OUTER thread guides 19 'and 21 * are small Back bends inward, while the inner thread guides 19 and 21 have no such back bends.

Its guide rail 25 is secured with the aid of a carrier 27

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attached to the heater protection device 7 and serves to the two strands of thread when threading, and while the free bearing Ann moved to the zenith of its circular motion, separated to keep. The guide rail also serves to keep the strands out of contact with the heater safety device 7 during the threading of the device keep.

Fixed thread guide devices 29, 29 'for the incoming yarn and fixed thread guide devices 31, 31' for the outgoing yarn are arranged as shown and attached to the frame of the heating device (although this is not shown in detail) _β

The device according to the invention is particularly suitable? for the treatment of fast-moving yarns, such as "B" in the False twist crimping in a combined stretching and false twist crimping longitudinal process, where running speeds of 609 m / min are possible and a very long contact with the heater is therefore desirable. In such a Case, a heater height of 1.82 m is an example of the corresponding measurements »The automatic threading, which makes the device avoids the need to provide a work platform on which a worker can stand

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~ 13 -

can to reach the top of the device, It also ensures that the threads are actually neatly inserted into their corresponding grooves.

It should be noted that the heater according to the invention upright and vertical or at an angle - to the vertical in each level of the depth of the heater (dohc the level of the back to back attaching the heated Plates) or can be arranged in the plane at right angles to this.

Usually there is thermostatic control of the heating element or the heating elements are present to maintain a constant temperature of the heated plates on each part the same according to the desired temperature gradient to maintainc ™

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Claims (1)

CLAIM: Yarn heating device, consisting of an elongated upright heating plate, whose outer surfaces are for contact with a running yarn or with running yarns are suitable, a device for supplying heat to the heating part, and one with Grooved roller arranged at the upper end and in the middle of the heating part, characterized in that an endless chain (13) for a circular movement is attached around the heating part (1) and the roller (16) in a plane parallel to the longitudinal extension of the same, that one arn (17) is attached vertically to the endless chain (13) with which it moves, that two are one horizontally spaced hook-shaped thread guides (19, 19 'or 21, 21') on the arm (17) for one around each the heating part (1) are attached to the lying around » where the hook-shaped threads with their openings point upwards when the arm (17) moves upwards «and that fixed thread guiding devices (29, 29 * or 31, 31 ') are attached to the lower end of the heating part (1), which the yarn or yarns into or out of contact with the lower end part of the heating part (1). MTCNTANWUTB FlNCKE. DIPl -ING. H. BOHI WPt-ING. 5. SIAiGII 109882/142 « BAOORIGfNAL