DE1902487A1 - Device for the heat treatment of threads, in particular textile threads - Google Patents

Description

Dlpl.-lng. H. B. KÄHlER · Or.-Ing. W. STRONG PATENT Attorneys * 1 Q fl O / O O

415O Krefeld · Moerser Straße 14O · Fernruf (O 21 51) 2 OM- 69

Date: 1/17/1969

Our reference: 4 $ _Q gy QO?

In the answer bitta angvbtn Your sign:

Eric Thomas Scriven, of The Orchard, Firs Drive, Gustard ϊ / ood, Wheathampstead, Hertfordshire (England)

Device for the heat treatment of threads, especially textile threads v '' '

The invention relates to a device for the heat treatment of textile and synthetic threads in one process stage which requires any heat treatment. The inventive Device is particularly applicable to machines for false spinning and crimping.

Known machines of this type are provided with heating units in the form of rods equipped, which are installed in thermally insulated housings. These are usually attached in a vertical position next to one another and extend from each side over the entire length the machine. This has the consequence that a large part of the machine interior is inaccessible so that this space cannot be used effectively. On the other hand, this room could have others Components of the device, such as yarn feed bobbins, and thus the use of a separate basket

9098A6 / 1070

Deutsche Bank AG 1O3 / 1525 Krefeld · Stadt-Sparkasse Krefeld 3OS 722 · Postal check Essen · Ί · Ο55

superfluous, which usually stands on each side of the machine and a not inconsiderable floor space is required. aside from that Is it necessary for the hitherto known machines that the Facility for delivering the threads inconveniently close to the floor lies.

A vertically arranged heating channel has the disadvantage that accordingly the Y / heat increase in the yarn over the length of the channel, the effective working heat of the device also over the length must be increased, which leads to an inaccessible and useless space is created in the machine.

Also, a vertically arranged heating unit is above theirs entire length exposed to the effect of heat convection; consequently the lower part of the heating channel is at a lower temperature than the upper part, and the thermal gradient is not linear.

Furthermore, the vertical arrangement of the thread during the heating process with the result that the thread is also exposed to convection. This causes uneven tension and poor heat transfer, since the uniformity of heat transfer in the thread depends on the degree of contact of the thread with the heated surface is dependent. With a vertically arranged heating surface, this heat transfer depends on the voltage, to which the thread is exposed when passing through the heating surface, and it is necessary to move the thread towards the heated surface to withdraw. The resulting increase in thread tension

909846/1070

hai "in thermoplastic -'adeii an -dehnung sur / olge. In addition, äie au Iciianueinoen l * 'äo.en in different places ii'oex * the lungs of the Ilaschlue changed in their? j deceptively ur. .U ¹ Ur treating some It is necessary to watch the,. ■ 'aaeii under very little tension over the t.eheisi-e surface, which with a vertically attached ice surface has a folder, caB dex * "ji'aden becomes wasted "uiid thereby, at different distances from the" heated pool, which means that the variae overhang is different.

The width dex * vertical aH _f '.; E arranged the leizilflächen .lit their respective ivärrieisoiierten G-ehäusen requires quite a P3.atfj long the machine, so that accordingly the view! the yarns to be treated on the same side is limited in order to zoom in on a length of the machine that is kept within practical, possible limits. In this way, the possible output for a given junction area and a specific machine volume is limited.

When using tubular ITadenheis units occurs as a result of the tendency for the mist and steam emerging from the heated filaments to condense on the walls of the tubes Another disadvantage, since the possibility of ventilation of the heated tube is limited and also a part of the tube is unheated. These repulsions form tar-like deposits «· high viscosity genes, which are an obstacle to looseness between threads and Itohr form and thus the tension in the paden in a serious way raise. As this vision goes from tube to tube

909846/1 070

BATH ORIGINAL

_ ₄ _ 1902A87

Unterocliiedircii ld, v / eroen die: <'äden also acted differently, which leads to an interdependent and poor quality.

The roughness of the deposits in the pipe also has one poor heat transfer, which in turn affects the quality of the thread further deteriorated. .Sometimes some pipes are complete added, but the condition of the inside of the pipe cannot be inspected.

The elimination of these inconsistencies, for example by supplying a flow of heating air through the pipes to prevent them condensation is associated with high costs. Another possibility is the use of a suction flow, with which the condensate is to be drawn off through small holes in the pipes. However, this often has the effect of that the holes themselves are blocked.

A thread heating channel should always be clean and smooth in order to thus to enable a good and as uniform as possible heat transfer to the thread. The cleaning and polishing of the inner surface however, tubular heating elements are particularly difficult if the tubes are curved and stuck in the machine are attached. The use of flexible wires often results in nicking the wall. Besides, it's difficult determine whether all deposits have actually been removed by the use of such devices.

909846/1070

BATH ORIGINAL

Finally, opted for the pail that the pipe walls didn't

t.

are completely clean and smooth, some difficulty in introducing new sutures into the ears either by suction or air pressure turned out so that often wires or hooks at must be used to help with the introduction.

If a thread is stopped in the heated tube for even a moment, it will hang onto the tube wall and melts, which inevitably restricts the undisturbed production process.

Another known device of the type in question has continuous ones mounted on both sides of the machine Heating surfaces, whereby the threads to be heated are guided diagonally and obliquely together over the heating surface. this has the disadvantage that a broken thread immediately disturbs the other threads and becomes entangled with them. Another thread break which spreads rapidly and progressively over the whole machine, is the result. This case occurs when it is to be regarded as normal Yarn spacing, and therefore sophisticated devices are provided to prevent this from happening. For this The reasons are the capacity and the possibilities of a machine in terms of reducing the thread spacing and increasing the Output power severely limited.

In addition, since open heating surfaces are used in these machines, the thermal insulation is of course difficult, which is great Causes heat loss.

909846/1070

- © -

The invention has set itself the task of eliminating the aforementioned disadvantages of the "known 1 machines, in particular those during to avoid the difficulties arising and also the possibility to give the output of such Increase machine.

The invention is characterized in that at least one electrically operated heating unit for heating the electrodes on and off extendable transversely the device is arranged continuously and one in non-vertical, essentially horizontal practice arranged, extending in the longitudinal direction through the device Have heat transfer Celeiaent and on the device -? outside guiding devices for bathing clocks and / or. the stores darcL the 'device and on the bzv /. the heat transfer eggs ducks are provided over.

In the ITorualfall there are several heating units with heat transfer elements provided in single or multiple plate-like suns. This can be done in single sentences lengthways be arranged side by side, the units of each set being parallel to one another.

Furthermore, it is provided according to the invention that the thread guide devices are designed such that a plurality of threads passed in front of and behind, over and under the heated elements can be, and the starting or reversal channel of each individual thread or the individual threads parallel to one another lie or are bent accordingly.

• 9098A6 / 107O

BAD ORIGfNAL

Flatten οπο-r Plattcnsätse are crlUnuuii / Turoc.a -3- Lι: ν. e.uc slidable in a Ge ntc U or jerL'olders, so Calä it is now easy to find the corner of the j are specific.

. '■ iac.ι a] - further i-erlaiial the Jirfinduiif is provided that the frame or the ije.ha3.ter is subdivided by means of -examplev / eiee- _ ^v ü] .. x * angsschlenen or similarly-ii, so that across the Vorriciitun ^; Compartments for the outside area of the heating units are formed,

The Jeiililter Icaim according to a further em I "erlanal the aucii v / ämeisolierx and with a device euu Jlatirieiic-u be provided the .Oänipxe. liiin part of each ileizeinheit i: ann Erlindungsii'euäß for further securing ^ β ^ τεη VärneL losses of the container a seal or Värineabdeekunt; form _e

In the drawings, six "are typical and preferred embodiments of the invention shown schematically. Show it:

j? y. 1 shows an end view of the device according to the invention;

Prop. 2 is a side view of a container in which two different Types of heating units are arranged;

Pig, 3 a plan view of the arrangement .geinäß Mg. 2;

4 and b two different forms of the heating unit in an end view;

Figures 6, 7, O and 9 show four different arrangements of heating in _T.

units in front view.

9098 ^ 8/1070

BATH

In Figure 1, several lyadenzuiührungsöpulen 1 are shown, from which the threads are unwound via a feeding device 2 v / earth. The threads are then fed via guide rollers through a thread heating channel between a series of

Y. 'Replaceable electrically operated heating units across guided the device. Each of the heating units knows one horizontally arranged V.ärraeelement or plate 5, the extends across the device from side to side.

The thread is then deflected over a thread guide 4 and through the same heating channel in parallel liichtung over a false v spinning device 5, a yarn transport device 6 to one Collecting coil 7 out.

Vile seen in Figure 1 is on the opposite side the device is also provided with a number of thread delivery bobbins, from which the threads via the thread heating device, the false spinning device and the second yarn transport device be led to a collecting coil.

The heating units are mounted in a container with upper and lower members 8, 9 perpendicular to one another and so that they can be inserted or removed. They are attached in such a way that they can be removed and reinserted independently of one another, like from a jig. 2 can be seen. Each alternating unit can be exchanged from the same side of the device. On the right or left side of FIG. 2

9098A6 / 1070

BAD ORIQINAU

are uiLterHchiedliolie Aus £ ü] irun ^; f; .ioruen of -Ieic units shown, of which more details? can be seen.

In Fig. 4 the thread guides are for clarity because of not shown. As can be seen from FIG. 4, the heating units for thread heating have vertically arranged stands 11, 16, each having a number of heat transfer plates arranged in the horizontal direction and parallel to one another 12 carries. Each of these plates is hollow and contains insulated and sheathed resistance elements 1p, which a high electric current is supplied at relatively low voltage.

The current is fed to the stands 11 via pairs of contacts 14 and bolts 15. Each heating unit can be used for cleaning purposes can easily be taken out. Both opposing heating units 11 and 16 are from the same side of the device operated, while each intermediate heating unit can be operated from the opposite side.

In Fig. 5 are two preferred embodiments of heating units shown. A row of four heat transfer elements is attached to each vertical stand, each of these heat transfer elements having a pair of inclined, Has plate-like heat transfer surfaces 18. Four of these surfaces, which are each on one side of the stand, are with one side of the device

909846/1070

BATH ORIGINAL

Threads fed while the four other faces on the other Side of the stand are fed with threads from the opposite side of the device. In Fig. 5 are in the case of a heating unit, the thread guide devices do not shown in order to facilitate the clarity of the drawing. Electrical resistance heating elements 19 are, as shown, provided and with a filling the cavity surrounding heat-conducting medium 2o.

To display the temperature is a thermocouple 21 and to Controlling the predetermined temperature a thermistor 22 provided.

In this embodiment it is particularly advantageous that a single unit carries eight heating surfaces instead of only four heating elements, as shown in FIG. 4, and that the heating elements, the thermistor and the thermocouple are common to all eight heating surfaces.

Another advantage is that the threads are less easy to open be able to grind the inclined surface, because although the thread touches the heating surface due to its gravity, only one component of a weight force is transferred to the heating surface. This is particularly evident in heat treatment of fine denier yarns under low tension is advantageous.

909846 / 107Ö

Fig. 6 shows an embodiment for the treatment of different threads, either simultaneously or not simultaneously. The threads supplied by the delivery bobbins 1 are fed via the thread feed device 2, the plates 5 for thread heating, the thread guide 4 and the corresponding Thread heating channels to the false spinning device 6 and! - fed from there to the collecting roll 7.

An alternative possibility for guiding two or more threads over the same heating plates is shown in FIG. Here two or more threads supplied by the bobbin 1 are fed through the lower thread heating plate 3 »the thread guide, fed along the upper thread heating channel, the false spinning device 6, to the collecting bobbin 7.

Fig. 8 shows a further embodiment. The one to be treated The thread is taken from the bobbin 1 via the feed device 2, the top of the heating plate 3 »the thread guide 4t and then in the opposite direction over the opposite one Side of the plate 3 and the false spinning device 5 as well as the second feed device of the collecting roll 7 supplied.

Another embodiment is shown in FIG. The thread to be treated delivered from the bobbin 1 becomes via the thread feeder 2, the heating plate 3, the

909846/107 0

The thread guide 4 is fed to the false spinning device 5. From there, the thread is fed to the bobbin 7 via the second feed device 6. In this case lies The special feature is that the heated thread passed over the thread guide 4 is continued "floating freely in the air" will.

Several possible arrangements can be designed in such a way that that the arrangements shown in Figs. 1 to 9 are reversed, such that the thread delivery bobbins above the heating plates are arranged and accordingly the take-up coils are arranged below the heating plates.

As can be seen, the heating plates are arranged in horizontal planes running across the device. The heating plates can thus be used with a sliding effect, for example. You also need in perpendicular direction and relatively little space over the length of the device. This arrangement enables that the number of threads to be treated at the same time quadrupled compared to the known devices can be.

The space that cannot be used in the known devices can now be used to hold the thread delivery bobbins. Besides that the thread feed device and drive can be used in

90 9 846/1070

- 13 borrowed more favorable height to be installed above the ground.

In addition, the length of the thread to be heated can be changed at any time without having to increase the heat of the device, in view of the fact that the thread is now over the same heating plate can be fed back and forth or via a different heating plate, on the same side of the device, can be increased significantly.

In addition, if the heating plate is arranged horizontally, the effect of convection only occurs in the transverse direction. the The heating plate therefore has no thermal gradient over its range, and the temperature therefore does not vary with any thread or none of the threads in the conveying direction. In this way a more uniform heating of the threads is achieved.

Since the thread running through a horizontal heating section is not exposed to any different convection over its length is and to the same extent the heat transfer to the thread is independent of the thread tension, since the contact with the heated surface is only possible due to its gravity, a thread treatment is a weaker thread tension possible. This is particularly advantageous when part of the thread treatment is aimed at this is that the thread take on large θ Krause1- or shrink effects Boll. Then it is necessary that to achieve a free thread contraction of the thread with a mini

909846/1070

mum is led to voltage across the heating surface.

Another advantage of the device according to the invention lies in the possibility of a given floor area or with given air space compared to known devices quadrupled amount from the discharge of treated i'aden. This is explained by the compact "arrangement of the heisein" units in the containers, from the closely spaced ones vertically separated heating channels and from the possible increase in the throughput speed.

The close mutual arrangement of the heating units within a container also reduces heat losses to the surrounding air as well as the heat balance in the container and between the heating plates.

In the device according to the invention, the heating units can be exchanged quickly and easily for the purpose of inspection and for cleaning and smoothing the heated surfaces. As a result of the arrangement, the vapors do not remain in the immediate vicinity of the heating ducts and can escape to a certain extent into the surrounding atmosphere within the container, as they are drawn off from the container by means of negative pressure and condensed into a gas container located in an anaex part of the device .

. 909846/1070

19G2487

As the heating units are easy to replace, the Facilitates cleaning, smoothing and inspection of the heating units. The open arrangement of the channels allows case3, simple and reliable cleaning is necessary.

909846/1070

Claims (1)

Claims 1. Device for the heat treatment of threads, in particular textile thread, characterized in that at least one Electrically operated heating unit for heating the thread in and out across the device is and one arranged in a non-vertical, essentially horizontal plane, extends in the longitudinal direction through the Device extending heat transfer element (3) and on the device thread guide devices (4) for guiding the thread or threads through the device and past the heat transfer element or elements (3) are provided. 2. Apparatus according to claim 1, characterized in that each heating unit (3) several heat transfer elements in the form of substantially horizontally arranged, parallel Has plates (12), 3. Apparatus according to claim 1, characterized in that each heating unit (3) several heat transfer elements (18) with plate-like surfaces inclined to the vertical plane. 4. Device according to one of claims 1 to 3 »characterized in that that several heating plates (12, 18) or heating 909846/1070 Plate sets horizontally and parallel to the longitudinal direction of the device and alternately from each side are arranged extending to the opposite transverse side, each set alternating for a feed with Yarn is provided from the corresponding transverse side of the device, 5. Apparatus according to claim 4, characterized in that the heating plates (12, 18) in a different assignment than are arranged for a feed from alternately opposite sides. 6. Apparatus according to claim 5 _f, characterized in that the heating units are arranged in a frame or container (β, 9, 11, 16) for accommodating the heating plates (12, 18), the plates or plate sets for the purpose of cleaning, smoothing , maintenance, repair or replacement are easily separable or replaceable. 7. Device according to one of claims 1 to 6, characterized in that the heating units in an insulating or housed heat-storing container with each heating unit forming a seal or cover against heat loss of the container. 909846/1070 ο. Device according to claim 7, characterized in that that one or more of the threads to be treated are in physical contact with the heated surfaces transversely through the device and either with physical contact with the heat transfer elements (ΐβ) or floating or are attached in any desired combination that is possible through the arrangement and assignment. 9. Device according to one of claims 1 to d, characterized in that that the elements (ld) of the heating units are designed inclined about their horizontal axis and with their rear sides attached against each other and with a common heat source and a common heat adjustment device (22) and heat sensing device (21) are provided. 10. Device according to one of claims 1 to y, characterized characterized in that the device is preferably used for false spinning, Crimping and is intended for the treatment of textile threads. 11. Device according to one of claims 1 to io, characterized characterized in that the heating surfaces with electrical resistance heating elements (13) are heated and control a Heat sensing device (21) and an expensive warm device (22) is provided. ■ 909846/1070 -49- Blank page