CS270239B2 - Cone for thread dyeing wound on a bobbin and for equivalent utilization - Google Patents

Abstract

The cone has a frustoconical wall (2). permeable and having such a thickness that it creates along a portion of its length, an axial through fit (3) to center it on the stem to which it is placed taper the dyeing device. It also has a cone an axial recess (14) formed in the end part (13) of the frustoconical wall and the annular bottom (11). with this axial recess AND 14) is adapted to insert the narrowest portion IA) of the axially adjacent cone, making the cones slipped on one and the same shank are partially slip into each other

Description

CS 27o239 B2 1

The invention and the invention relates to a device for dyeing threads on a bobbin. It relates to and to the coloring cones on which it is wound during yarn dyeing. Presently, traditional dyeing cones are used for dyeing spools of yarn wound on a spool formed from a perforated frustoconical shell on which a yarn is wound into a bobbin, whereby several cones with corresponding yarn bobbins are always slid on a plurality of relatively thin stems by which the dyeing device is provided . The dyeing device has a container which is closed in the dyeing process, the stems can be thin-walled or perforated to allow the ingress of the liquid, pressed into the stems, from the stems to the side and into the conical cavity and then through the thread mass through the cones. to be dyed, In other cases, the stems have a cross-sectional shape and the dyeing liquid is fed from the bottom and extending axially.

These arrangements provide for the use of forming discs disposed between one dyeing roll and the other for centering them on the shafts to maintain their spacing and to support the above-lying yarn bobbin. This solution leads to the need for certain overall axial dimensions for each cone and thus for dimensional losses in the dyeing containers. In addition, the preparation for dyeing is difficult to perform and the filling of the discs with the interleaving of the disc is particularly difficult, so the possibility of automatically filling these traditional dyeing systems with these cones is limited.

Other solutions have been proposed using special cones that have a saddle in their larger base for the underlying cone. This allows the cone to be partially inserted into the other, thereby ensuring that they are centered on one another and the overall dimensions of the cones and coils being restrained on each other, thus avoiding the possibility of deformation of the rolls, which prevented the presence of discs inserted between the traditional α-βρs. individual cones. These reels have the function of supporting the coils spaced apart from the centering of the cones. However, these relatively unconventional cone solutions that do not require intermediate discs and allow partial axial insertion of one cone on the other on one and the same shank, however, require the conversion of the dyeing device to achieve adequate shank and mandrel spikes for the centering requirements of the particular cone types, and on the one hand, they give rise to further difficulties in performing automatic storage due to angular centering difficulties, which is usually required for storing the cones.

The above-mentioned drawbacks are solved by the invention, which is based on a cone for dyeing yarns wound on a bobbin and for an equivalent use, characterized in that they comprise a cone-shaped wall having such a thickness that it forms an axial passage for its centering on a portion of its length. a shank on which a cone is inserted in the dyeing device and comprises an annular bottom portion and a side wall portion defining an axial recess for insertion of the narrowest portion of the axially adjacent cone so that the cones pushed on the same shank are partially inserted into one another.

The cone according to the invention thus solved permits, on the one hand, the use of traditional equipment without changing the shafts, thus eliminating the need to change the mandrels on existing winding devices to produce spikes and, on the other hand, to allow the mounting cone without losing the axial dimension between adjacent coils, so that multiple coils can be used with the same axial dimensions compared to traditional systems. In addition, all the disadvantages associated with the placement of centering and support discs and the angular centering of the existing types of cones described above in the analysis of known technique are eliminated.

According to a further feature of the invention, the frustoconical wall preferably has a series of longitudinal slots widthwise increasing outwardly.

The axial recess formed in the larger base may have an annular protrusion with an inner profile inclined in the manner of a throat for centering the smaller base of the lower cone. Through such an annular projection, through-holes may be formed leading into the longitudinal slots. In a portion adjacent to the larger base, corresponding to the recess, the side wall of the recess may be slotted.

Claims (1)

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described, by way of example only, with reference to the accompanying drawing, in which: FIGS. 1 and 2 show an external and longitudinal section of the dye cone of the invention; FIG. and FIG. 4 is a view in the direction IV - IV of FIG. FIG. 1 shows a dye cone 1 with a frustoconical wall 2 of a variable duct which defines an axial continuous duct 3 into which a dyeing device shaft is inserted and guided. This frustoconical wall 2 has longitudinal slots 5 ' with a radially widening width, giving the entire frustoconical wall the appearance of a set of ribs 17 oriented along the surface lines of the frustoconical surface of the cone 1. These ribs 7, which are reinforced by an annular ring 9. the regions of these ribs are terminated in the lower region of the cone 1, ie its larger base, by a ring 11, below which the wall 13 extends relatively smaller in thickness than the wall 2 forming the ribs 7. The bottom is defined by a ring 11. In this wall 13, slots 15 can be formed, of which only one is dotted in Fig. 1. The ring 11 may have holes 17 disposed therein between the ribs 7 to allow dyeing to pass through. fluid when it is fed from the lower part of the shaft on which the cones are deployed. The drawing shows only some holes 17 which, if formed, are evenly distributed. From the ring 11, an annular projection 19 extends inside the recess 14 surrounding the housing 3, which has a guide profile inside it, tlj. in the form of a neck-shaped throat, shown in the drawing. In use, a plurality of tinted cones 1 on which a yarn to be dyed is wound onto the shank of the dyeing machine and axially pressed onto the shank so that the end portion 1A of the smaller cross section of each cone fits tightly on the inside of the recess 14 the recessed cone of the recess 14 against the ring 11, the centering of the end portion 1A is easily performed by the protrusion 19, which facilitates the self-storage. In any case, the correct guidance and correct stacking of the stacked cones is achieved, thereby reducing the overall dimensions of the cone assembly and eliminating the need for additional elements such as molded centering discs, which pose a great problem in terms of automating the method of depositing the coils that are fed to the dyeing operation. . Centering discs are provided with recess 14 and bottom ring 11 in order to facilitate the flow of dye liquid into the cone region in the region of the larger base, i. in the place where the two conical surfaces are stacked one above the other with a poorer fluid flow, the fluid passage 15 facilitates the eventual slits 15. In addition, the cones described above do not need to store the cones to be stacked to a certain relative position since they are not required no particular angular position and any modification of traditional machines. OBJECT OF THE INVENTION 1. A cone for dyeing threads wound on a spool and for equivalent use, characterized in that it comprises a permeable frustoconical wall (2) having a thickness such that it forms an axial through-fit (3) for its length centering on the shank on which the cones are inserted in the dyeing device, and toward the main base comprises an annular bottom portion (11) and a wall-side portion (13) defining an axial recess (14) for receiving the narrowest portion (1A) axially extending the cones, so that the cones pushed on the same stem are partially inserted. CS 27o239 B2 2. The coloring cone of item 1, characterized by the fact that the frustoconical wall (2) has a series of longitudinal Stérbin (s) of width gradually outward, 3. The coloring cone according to 1 or 2, characterized by that an annular projection (19) with an inclined inner profile protrudes from the bottom portion (11) of the axial recess (14) formed at the larger base for centering the smaller base (1A) of the bottom cone in the manner of a neck. 4. A dye cone according to claim 3, characterized in that through said annular projection (19) there are through holes (17) extending into the longitudinal Stérbin (s). A dye cone according to the preceding claims, characterized in that it is provided with an opening (15) in the wall (13) of the recess (14). 1. drawing