DE1785466B2 - FALSE WRENCH DEVICE - Google Patents

Description

The invention relates to a false twist crimping device for synthetic thermoplastic Fä len with Falschswallaggregatcn and these upstream and downstream heating devices as well as with below of the false twist units located on the winding devices and on the side next to or on the machine arranged template gate and, if necessary, with a thread and steam suction device.

It is already known that the Falschdrallkräuse'.n synthetic thermoplastic threads both at as well as after the actual twist deformation for fixing the same and for post-fixing Reduction of the high crimp elongation generated in the thread structure to be heated intensively (French Additional patent specification 67 751 to the patent specification 1054 338; U.S. Patent 3,077,724, Figures 6 and 7). While these measures initially alone were made discontinuously and the crimped yarn initially obtained in a special Work step, especially in a loosely wound form, for example in a steam oven of the repeated Was exposed to heating, efforts are now being made in the course of intensification of production to use the various Carry out measures in a single operation. There are therefore already to continuous implementation of all those measures devices have been proposed in which the thread structure before and after the false twist member passes through a heating section to then as low-stretch crimped yarn in eir; to be brought to favorable winding form for further processing. After being used as a heating device in front of the false twisting device, mainly electrical resistance heaters had enforced, the thread structure in contact with the preferably convex curved Are overflowed over the heating surface, you have the same facilities for post-fixing behind the False twist device used for continuous set yarn production.

The false twist units have undergone significant further development in recent times. You leave without further ado Speeds of 500,000 rpm and thus allow a considerable amount of the thread structures to be crimped Increase in the throughput speed, which in turn extends the previously usual Heating section in front of and behind the false twister leads to ensure the necessary heating.

Thread crimping machines with many treatment sections lying close to one another require large overall heights for clear thread guidance and are therefore difficult to operate, especially when starting up. One has therefore the Heizstrek ken in front of and behind the false twister next to or behind one another at the same level (USA.-Patent 3 077 724, Fig. 13, 13 b) or replaced by a single common heating device, the thread structure once from above down and - after passing the false twist unit - overflowed in the opposite direction from bottom to top (Swiss patent 369 860). There are false twist crimping machines too

3 4

Heating devices known which, from the threads With "essentially effective by convection"

without contact, as should be indicated at least in part in connection with the heating boxes.

heating boxes effective by convection must be designed so that the heat transfer between the wall

are (French patent specification 1 127 005; German fertilization and thread formation not through contact,

Utility model 1 898 539). Such heating boxes have but only to a negligibly small extent

the state of the art, however, exclusively as that produced by radiation and mainly by convection

False twist units upstream and for introduction, i.e. by the bc-

xing the generated swirl serving Heizvorrichtun-sensitive gaseous medium takes place. The heat

gen used. The heating box can be switched directly or indirectly

Furthermore, it is done from the German Auslegeschrift io, for example by means of electrical resistance

1251462 known, standing elements in front of the false twist unit.

e'.nen the threads run through electrical power through the use of a common heating cable

Resistance heater with along the thread run at the bottom for a variety of thread structures in place

to arrange different heating power. From the narrow heating pipes that have hitherto been the norm, for at most

French patent 1418 986 it is known 15 two threads is a considerable increase in safety

by deflecting guiding organs in the vicinity of the unit against undesired contact of both the

Winding devices, one with one each of the dengebilde and the filament structure

False twist unit upstream and downstream of the heating system opposite the walls of the heating devices.

device the false twist machine has been optionally only aimed; at the same time, a space-saving lo-

with the upstream or upstream and downstream 20 solution for the heating devices that

Let the heater work. There is a great deal of space from the clear structure, however, from the individual facia

finally lets see utility model 1 958 1S3.

for extremely highly designed false twist crimping configurations of the invention are in the sub-

Schinen pivotable and / or height-adjustable Fa- demands described, for their features no

known to the docking aids. 25 element protection is claimed.

More exact investigations of the achievable Krau- It can be done by using a Konveksel quality have shown that it is suitable for generating tion heating within the free space of a high quality more voluminous and at the same time less stretchable closed or closable heating casks in Crimped yarns above all depend on the fact that they run - as is known, without forcing the reach the threads in the second heating section after passing 30 in the box circulating hot air that the of false twisting as gently as possible, a large number of contact-free - without any mechanid. H. completely contact-free prior to the actual inspection - threads running through the heat-induced shrinkage and fi is completely evenly warmed through. The comparison process to leave. Any contact between moderation of warming is still supported the crimped thread structure and the second 35 by the rapid run of the threads, which the hot heating element therefore has a negative effect on the mess and, to a not inconsiderable degree, spoil quality the end. On the other hand, this can be the case with the supply eddy.

put tapered thread structures in front of the false twist. aUo within the first heating section, to the fixation, cones passed by a multitude of threads the swirl in any way, for example 40 vection heating is extremely low, as compared to the by means of contact heating. otherwise common single or double filament heating

The device according to the invention should therefore only be used in a heating box according to the invention

First and foremost, a gentle, i.e. contact-free, control device is required because

Action of the crimped thread in which now, for example, thirty or more threads

False twist unit downstream second heating 45 are heated simultaneously and jointly and

route, but as little as possible of their heating is jointly regulated. While

take up space. Furthermore, it should optionally be used in the case of the previously customary, quickly polluting

for the manufacture of highly elastic or stretchable single or double filament heating tubes the product

poor crimped threads can be used. Finally, there should be malfunctions as a result of lengthy cleaning

the clear and simple usability of the 50 gears was very high, you can use the inven-

The devices required for this guarantee the heating box used in the correct manner on a mini

and compared to the known devices of the mum are reduced. Of course it is utter

Type described at the outset significantly improves freedom from maintenance as a result of the unavoidable fiber flight

will. not accessible, therefore the heating box should

This task will also be due to the patent application or as a whole

Claim 1 specified invention solved. necessary cleaning work inside conveniently

The term "multitude" is intended to be able to perform in the sense of the present.

Invention a number to be understood that very much In the drawing are two exemplary embodiments

is greater than two. For example, the threads of the invention are shown schematically. It shows

that of fifteen or more adjacent 60 F i g. 1 the structure of the false twist crimping machine

False twist aggregates by a single heating cabinet with the two heating sections, of which only the

most led. It is also possible to use the threads of two downstream of the false twist unit as convection

is formed from fifteen or more false twist aggregation heaters,

th existing, opposite rows to F i g. 2 the same arrangement in which the

merge and - while maintaining a sufficient heating section 65 upstream of the false twist unit

Gend large distance, which is designed as a mutual convection heater.

Avoids contact - separated by a single In both figures, the right half shows the fa-

To lead heating box. the run in the production of a low stretch

Yarn that has passed both heating sections while thread 1 is placed over roller 4 becomes the

rend the left half of the thread run in the manufacturing handle 8 back to its upper rest position

ment of a highly elastic yarn demonstrated. pushed. When the lever arm 6 with the stop 11

The structure of the machine is made with the help of the thread, it rotates slightly in order to best illustrate the process. The threads 1 become 5 point 7 counterclockwise. In doing so, the feeder 2 from the delivery bobbins or the thread 1 is placed on the heating plate 5.
After pulling the thread 1 through the wrong service aisle above head height of the operator 12 and after inserting it into the delivery mechanism 13, they cross the so-called bobbins 3. The cops 3 shown are a pierced metal ball on a part of reserve cops. They can be fastened individually or also in the free thread end and pulled off several of them at the same time through the first thread and the lau- den inlet opening of the heating box 14 is dropped over a corresponding number of loops, with the thread and overrun rollers 4 in each case in the funnel 22 at F i g. 1 is caught in the heating pre-outlet opening and after passage direction 5 a. Each overflow roller 4 is rotatably seated through it on the baffle plate 15 (on the left in the drawing a two-armed lever 6, which in turn meets the position shown in 15 tion). The inclination of its fulcrum? on a vertically displaceable baffle plate 15 to the thread run causes the Me-handle 8 to be articulated. The interrupted display of the small beads with the thread end tied to it represents handle 8 is sufficient, in the illustration falls shortened towards the front into the operating aisle. When drawn in, so far into the service aisle that they place the thread 1 in the delivery mechanism 16 by being conveniently operated by the operating personnel ao actuating the hand lever 17, the baffle plate 15 can. The lower end of the handle 8 is pivoted out of the thread path in a (right-hand piece of stationary holder 9. The development).

The free arm of the lever 6 has a small counterpart. The crimping of the thread 1 takes place in per se

weight 10, which by any other suitable manner. The false twist unit 12 im

th lift mechanism can be replaced. In the upper 45 thread 1>; reverse twist is created by the heating

In the rest position of the handle 8, the lever 6 is fixed to the device 5. After the twist behind the

a fixed boundary 11. or below the false twist unit 12 again

Each of the false twist aggregate 12 in Fig. 1 is turned forward or back, the twisted thread is

SchaUetc heating device S consists of a per se from the delivery mechanism 13 to the contactless one

known and guided in direct contact from the thread 30 heating device 14, in which then a Nachfi-

overflowing heating plate, which, for example, can be heated, preferably with simultaneous readjustment

even as an electrical heating resistance element on ben the voltage takes place. The post-fixation

several thread tracks acts and in its width or lifts the thread caused by the twisting

Thickness is profiled so that its electrical torsional stresses occurred again

Resistance along the thread path functionally 35 on, so that a so-called "calmed" thread on

changes how this gets the spool of the winder 18 in the French patent.

1 516 505 is described in more detail. In practice it has been shown that one

Below the heating device 5 is the number of tracks heating the thread 1 by means of contact heating 5 in the

accordingly a number of false twist aggregates first inciting and through the non-contact

12 arranged. The threads 1 are heated by delivery 40 as they pass through the heating box 14

works 13 deducted from the false twist assembly 12 and receives a very high quality thread,

then run through in FIG. 1 the non-contact work- In the case of FIG. 2 illustrated embodiments

tcnde heating device 14, according to the invention from play with otherwise matching thread path and

a spacious heating box. The heat with the same designations as before is the heating

is the threads essentially by convection 45 direction in front of the false twist unit 12 also through

conveyed. Below the heating device 14 are those with non-contact convection heating

The number of false twist units is replaced by 20 each and in the same way as the heating box

a baffle plate 15 and a delivery mechanism 16 angcord- 21 formed behind the false twist unit.

net, which individually or in groups together by means of In F i g. 1 and 2 is the redirecting guide

of a hand lever 1? are pivotable. From 50 to 19 in the right hip inoperative (i.e.

Delivery mechanism 16, the thread 1 then runs to one of the thread passes the second heating device) and

known winding devices 18. in the litiken half in function (i.e. the thread

To apply a thread 1, the handle 8 is wound up after leaving the delivery mechanism 13.

brought into their lower locked position After kelt) shown

1 sheet of drawings

Claims (7)

Patent claims: 1. Falschdrallkräuselvorrichtung for synthetic thermoplastic yarns having false twist units and each of these, as well as upstream and downstream heaters located below the false twist units winders and laterally next to or on the machine disposed template gate and optionally with a thread and Dampfab ^c uugevorrichtung. characterized in that the heating device downstream of the false twist units (12) is designed as a closed heating box (14; 21) which is essentially effective by convection, the walls of which enclose a spacious interior and desse.i horizontal walls with a large number of thread inlet and thread outlet openings are provided, wherein the spacious interior is simultaneously traversed by a large number of crimped threads at a distance from the vertical walls without contact. 2. Device according to claim 1, characterized in that that the heating device upstream of the false twist unit (12) can be used as a single thread or multiple threads. Passed electrical resistance heater (5), preferably of different types along the course of the thread Cross-section or different heating power sii.d. 3. _{The device according to spoke I 1,} characterized in that the heating device connected upstream of the false twist unit (12) is designed as a closed heating box (20) which is essentially effective by convection and whose spacious interior is traversed by a plurality of threads at the same time. 4. Device according to claims 1 to 3, characterized in that the heating section 60 to SO ⁰ Zo passed through by the thread behind the false twist unit (12) has the length of the heating section upstream of the false twist unit (12). 5. Device according to claims 1 to 4, characterized in that in each case the downstream heating device (14; 21) independently of the upstream heating device (5; 20) can be regulated and switched off separately and above the respective winding device (18) a deflecting the crimped threads Guide member (19) is arranged. 6. Device according to claims 1 to 5, characterized in that the thread travel paths between the last delivery mechanism before the winding device and this itself, namely the lines (13-19-18 or 16-18) each less than 35% in length differ from one another, but are preferably approximately the same. 7. Device according to claims 1 to 6, characterized in that the thread delivery speed of the delivery mechanism (13) arranged immediately before the downstream heating device (14; 21) is approximately the same as the winding speed at which the crimped thread is deposited on the winding device (18) is, while the thread slicer speed of the thread feed mechanism (16) immediately behind the downstream heating device (14; 21) is significantly lower.