JPS6399370A - Coating apparatus for sizing yarn group - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention comprises cooperating squeeze rolls, at least one squeeze roll being immersed as a dipping roll into the size trough and the sizing yarn groups being two or more. The present invention relates to an applicator for gluing yarn groups, which can be electrically connected to at least one squeezing gap formed between two squeezing rolls.

In prior art sizing machines, the yarns to be sized, generally warp yarns, are passed by means of dipping rolls into a sizing agent trough containing a liquid sizing agent. Subsequently, unnecessary sizing agent adhering to the threads is squeezed out using a pair of cooperating rolls, with the squeezed sizing agent returning to the sizing agent trough or the like. A suitable squeeze roll set for this purpose can consist of a dipping roll that is only partially immersed in the size bath and a further squeeze roll cooperating with this dip roll. In this case, the squeezing gap is arranged above the level of the treatment liquid present in the sizing agent trough. Two arrangements are thus considered when using one squeeze roll at the same time as a dipping roll. The threads pass only between the rolls or completely around one roll and into the processing liquid. Two methods are used when gluing the warp threads.

By using the dip roll at the same time as part of the squeeze roll set, the manufacturing costs of the sizing device are reduced. However, with current sizing machines, 100-120 centipoise (cP) is higher than 120 m/min or 1
For high speeds of 300m/min or more at 0-50CP,
Simplified devices can only be used conditionally.

The reason for this is that as the thread speed increases, the sizing agent squeezed out in the squeezing gap of the squeezing roll set bounces back depending on the viscosity, and an appropriate anti-scattering plate is required to collect the sizing agent that bounces back. Because it will be.

However, such anti-splatter plates impede the accessibility of the dip-squeeze roll apparatus and the size trough.

Problem to be Solved by the Invention The problem underlying the present invention is to be able to achieve a uniform distribution of the size agent over the yarn volume despite extremely high yarn speeds and to divert the size agent that rebounds from the squeeze gap. It is an object of the present invention to provide a gluing device having a squeezing roll provided for simultaneously applying the gluing agent, without requiring special means for applying the gluing agent.

Means for Solving the Problem The solution according to the invention provides that, for the above-mentioned applicator device having at least one squeeze roll configured as a dipping roll and at least one squeeze nip, the roll adjoining by the squeeze nip The common tangent of the threads is directed into the size trough, the threads can be fed into the squeeze nip from below, and the size fountain device is arranged in the transverse section in front of the squeeze nip. do.

Thanks to the invention, it is possible to direct the entry side of the squeeze gap in the cooperating roll downwards and to obtain a sufficient degree of sizing despite a correspondingly small immersion depth of the immersion roll. This is because the threads to be treated can be supplied with sizing agent until just before they enter the squeezing gap. Thus, in the device according to the invention, the threads can be distributed not only by dipping rolls but also, in particular in the case of insufficient supply after a stop, by being distributed from below upwards into the drawing section, e.g. by squirting. Gluing agent can be supplied.

Furthermore, according to the invention, if a trough is provided which vertically moves up and down below the set of squeezing rolls, or if the sizing agent present in the trough is associated with a pump device for raising and lowering the liquid level, the dipping roll The immersion depth can be specified. The trough can be mounted pivotably about an axis parallel to the axis of the squeeze roll, for example. In this way, a fine adjustment of the immersion depth and thus of the degree of glue entrainment on the immersion side can be achieved without significant expenditure of force.

It is of course likewise possible to define the amount of glue to be applied during dispersion.

In order to be able to use the dip/squeezing roll combination device for sizing yarn bundles even at very high yarn speeds, the squeezing roll set must be cooperating fluidly with one of the two rolls of the squeezing pair. Another squeeze roll is placed in front. In this case, the thread group passes through two pattern parts connected in series. Glue and supplies are
This takes place in the first transverse section by means of a shower-like spreading device and in the second wedge-shaped section by immersion wetting of the last squeeze roll.

In this case, the two rear rolls are again directed with their common tangent within the squeeze gap into the size trough lying below, so that the flying size is returned into the size trough. are placed relative to each other.

The invention will be explained in more detail with reference to the schematic drawings of exemplary embodiments.

Embodiment In the embodiment according to FIG.
, it runs to the dipping roll 3 , from where it passes through the squeezing gap to the squeezing roll 5 , which cooperates with the dipping roll 3 in the sense of a squeezing roll set, and then runs in the direction of the arrow 6 to the next group of gluing devices. Drive to. The dipping roll 3 is immersed to a relatively small extent into the treatment liquid 8 present in the sizing agent trough 7 .

In the wedge 9 between the squeeze rolls 3 and 4, into which the yarn group 1 enters from below, ie from the size trough 7, a water spray or fountain device 10 is arranged, which device includes a pump 11.
can be fed from the glue trough.

What is important is that the yarn group 1 enters the squeezing gap from below, that is, from the direction of the treatment liquid 8 present in the trough 7, and even when the treatment liquid scattered in the direction of the arrow 12 has extremely high yarn speed, Almost without any preventive means, the roll 3 in the squeezing gap Φ
and 5, exclusively returning into the trough 7 in the direction of the common tangent 13. In this way, thread group 1 is immersed/
With the combination of squeeze rolls, uniform sizing can be achieved without the need for precautions to divert splashes.

In the embodiment according to FIG. 2, the yarn group 1 is first guided through a squeeze roll 14 and then only through a dipping roll 15. In this case, the yarn group 1 obviously comes into direct contact with the treatment liquid 8 present in the trough 7, if the liquid level 16 in the trough 7 contacts only the dipping roll 15 and not the other squeezing roll 14. do not. However, if the level of the treatment liquid 8 in the trough 7 is raised so that the liquid level 17 also contacts the first squeezing roll 14, the thread group 1 will partially pass through the dipping device and partially be immersed. The liquid passes through the surface liquid film of the roll 15 and reaches the milking gap cow. Surface liquid film 18
contact in the squeezing gap Φ to a degree that is usually sufficient for the sizing of the thread group 1. Only when very high coating weights are required are threads additionally applied to the upper liquid level 17 of the treatment liquid 8.
It is meaningful to have contact with According to FIG. 2, the two rolls 15 and 14 of the squeeze roll set are likewise directed with their common tangent 13 within the squeeze gap 4 into the treatment liquid trough 7 and are splashed. They are arranged with respect to each other in such a way that the treatment liquid falls exclusively into the trough 7 in the direction of the arrow 12.

The extent of the processing liquid supply and thus the level 16 or 17 of the processing liquid 8 can be adjusted in the case of the apparatus according to FIG. 2 (as in the apparatus according to FIG. 1 or 3) by raising or lowering the trough 7 or can be varied by tilting the rolls 14 and 15 about axes parallel to the axes 19, 20.

FIG. 3 shows the rolls 14 being pressed together in the squeeze nip.
2 shows an embodiment of a coating device similar to FIG. 2, with a third squeeze roll 21 adjoined by and 15. FIG. This squeezing roll through which the yarn group 1 should initially pass in the passing direction 6 is
Usually, it is placed slightly higher than the second squeeze roll.

According to FIG. 3, a third squeezing roll 21 and a second
A sizing shower 24 is directed between the squeeze roll 14 and the associated squeeze nip 22 into an upwardly open wedge 23, with which the sizing shower 24 can be used, for example with a pump 25. The processing liquid 8 pumped up from the trough 7 can be introduced into the wedge-shaped portion 23. Shower threads 24
By pre-treatment with , the size absorption of the individual threads is increased, so that very high operating speeds can be applied even in the case of very dense warp threads.

Using the embodiment according to FIG. 3, the first
Due to the pre-sizing in the wedge-shaped section of the invention, even with very dense warp yarns, it is possible to achieve a somewhat higher sizing than in the case of the device according to FIGS. 1 and 2. An important advantage of all the embodiments described is that the yarn group 1 can be introduced into the squeeze gap or into the first and second squeeze gaps 22 and 4 in very precise alignment. be. This is because it is impossible for the individual threads to shift relative to each other during passage of the treatment liquid. By guiding the yarn groups according to the invention, it is thus automatically achieved that the warp yarns are guided in bundles.

[Brief explanation of the drawing]

The accompanying drawings schematically illustrate an embodiment of the apparatus according to the invention, in which FIG. 2 is a sectional view of the sizing applicator according to FIG. 1 (but the second squeezing roll through which the threads pass forms a dipping roll); FIG. 2 is a sectional view of a glue applicator similar to that in FIG. 1 or 2, supplemented with another squeeze roll forming a draft; FIG.

Claims (1)

[Claims] 1. It has cooperating squeeze rolls, at least one squeeze roll is immersed as a dipping roll into the sizing agent trough, and the group of glued yarns is attached to at least one squeeze roll of the two squeeze rolls. In an applicator device for sizing a thread group (1), which is capable of conducting a gap, the common tangent of adjacent squeeze rolls in the squeeze gap is directed into the sizing agent trough, and the yarn group is inserted into the squeeze gap from below. Applicator for gluing threads, characterized in that a glue dispersion device is arranged in a wedge-shaped part which can be supplied and is located in front of the squeeze gap. 2. The coating device according to claim 1, wherein the first roll through which the yarn group passes is configured as a dipping roll. 3. The coating device according to claim 1, wherein the second roll through which the yarn group passes is constructed as a dipping roll. 4. The level of the sizing agent in the sizing agent trough is selectively preadjustable to a lower level in which only one roll is immersed, and an upper level in which the second roll is also immersed. The coating device described. 5. A pair of squeezing rolls having a common tangent line directed into the trough in the conveying direction of the yarn group in the squeezing gap is preceded by another squeezing roll, and the squeezing roll and the adjacent squeezing roll set 5. Applicator according to claim 1, characterized in that a glue fountain device configured as a shower is directed into the wedge between the squeeze roll and the squeeze roll.