EP0277373A1 - Device for extracting water from yarn bobbins - Google Patents

Abstract

The machine comprises two tanks (1 and 2) inside which rotate baskets (3) supporting the reel-loaders (4) which are actuated in different directions by a carousel (10) guided along a central column (13) ascent and descent. This arrangement allows, by means of a 180 ° rotation of the carousel, rapid execution of the loading and unloading of the treated coils and of the coils to be treated, by eliminating the dead times of the various operating phases of the machine. The assembly is hydraulically actuated, including the movement of the baskets (3) controlled by motors (18), by means of a suitable small hydraulic power unit and the electric control panel (26) which is associated with it and which ensures automatically using a logic circuit the sequence of all operations necessary for the proper functioning of the machine.

Description

The object of the present invention is to produce a machine with multiple rotating baskets intended to be used as a hydro-extractor for yarns wound on reels.

In this case, it is a machine in which yarns of wool, cotton, artificial fibers or the like, wound on bobbins must, after immersion in the dye bath, undergo a hydro-extraction in order to '' be subject to further processing work.

At present, the yarns in bobbins, at the end of the immersion operation in the dye bath, pass to the hydro-extraction station after being placed inside rotating baskets arranged according to different circumferences which leave from the outside of said baskets and which converge towards the center.

However, this provision inevitably involves a lack of uniformity in the rate of extraction among the different coils, due not only to the fact that the outermost coils are subjected to a greater action by centrifugal force, but also to the fact that these coils are in abutment against each other.

The object of the invention is to provide a hydro-extractor for yarns in spools, provided with rotating baskets inside which are placed the spools of yarns supported by appropriate arms (which form the loaders) and allowing said spools to be move only in the radial direction by means of slots made in said arms, which slots allow, under the effect of centrifugal force, the support of the coils against the inner wall of the baskets.

According to another characteristic of the invention, it is provided that each of the assemblies comprising the rotating basket, its control shaft, the sleeve for guiding this shaft and the hydraulic motor, is suspended from a suitable elastic device supported by three series of springs working in traction, while a series of shock absorbers compensates for any imbalance in the load placed inside the rotating baskets, giving rise to a perfectly uniform and silent rotational movement even at high speeds (1500 rpm), which is particularly advantageous with regard to the efficiency of the machine and its silent nature.

According to yet another characteristic of the invention, it is provided that the reel-loaders, four in number, are supported by a hydraulically controlled carousel and constituted by a cross formed by four arms; this carousel can be lifted for the extraction, outside of the baskets, of two reel loaders already treated, turn 180 ° and descend by introducing two new loaders into the baskets and simultaneously bringing the two other baskets already treated onto a tray appropriate loading and unloading, so that during the centrifugation dead time the operator has the possibility of preparing the two subsequent loaders, by unloading them from the coils already treated and by loading them with those to be treated.

The whole assembly is of course provided with the various controls which are necessary for the automatic realization of the entire operating sequence, namely: engagement of the loaders in the rotating baskets with closing of the lids, start of the centrifugation cycle, stopping, opening of the covers and extraction of the treated magazines, rotation of the carousel with installation of new magazines to be treated, closing of the covers and beginning of a new cycle.

• La fig. 1(planche I) est une vue en élévation de l'ensemble de la machine suivant l'invention.
• La fig. 2 (planche II) est une vue en plan par dessus de cet ensemble.
• La fig. 3 (planche III) est une vue en élévation avec demi-coupe montrant la même machine.
• La fig. 4 (planche IV) est une vue de côté montrant un support propre à soutenir une bobine.
• La fig. 5 (planche V) est une coupe verticale représentant un panier tournant renfermant un chargeur avec une bobine montée verticalement.
• La fig. 6 (planche VI) est une coupe verticale d'un panier tournant montrant une variante de réalisation d'un chargeur équipé de barreaux orientés suivant des axes horizontaux.
• La fig. 7 (planche VII) est une vue de côté montrant à l'état isolé l'un des bras du chargeur suivant fig. 5.
• La fig. 8 est une vue en plan de ce bras.
• La fig. 9 en est une coupe transversale suivant le plan indiqué en IX-IX en fig. 8.
• La fig. 10 est la coupe suivant le plan X-X de fig. 8.

The machine will now be described in more detail below with the help of the attached drawing boards in which:

• Fig. 1 (plate I) is an elevational view of the entire machine according to the invention.
• Fig. 2 (plate II) is a plan view from above of this assembly.
• Fig. 3 (plate III) is an elevation view with half-section showing the same machine.
• Fig. 4 (plate IV) is a side view showing a support suitable for supporting a coil.
• Fig. 5 (plate V) is a vertical section representing a rotating basket containing a charger with a coil mounted vertically.
• Fig. 6 (plate VI) is a vertical section of a rotating basket showing an alternative embodiment of a loader equipped with bars oriented along horizontal axes.
• Fig. 7 (plate VII) is a side view showing in an isolated state one of the arms of the loader according to FIG. 5.
• Fig. 8 is a plan view of this arm.
• Fig. 9 is a cross section along the plane indicated in IX-IX in fig. 8.
• Fig. 10 is the section along the plane XX of FIG. 8.

As can be seen in fig. 1, 2 and 3 of the accompanying drawing, the machine comprises a first group formed in this case by two envelopes or fixed outer tanks referenced 1 and 2, inside which rotate the baskets 3 supporting the magazines 4 of which the covers are seen 5 and 6 in the aforementioned figures, while the other two 7 and 8 are located outside of said tanks by surmounting the two other chargers which are arranged on the plate loading 9 in order to be discharged from the coils already treated and to be recharged with coils to be treated.

The covers and the chargers are mounted on a four-arm rotating carousel referenced 10, which is provided with a central shaft 11 and which is rotated by a hydraulic control cylinder 12; it is intended that the whole assembly can be raised and lowered by being guided by the column 13 with a double T profile, and this by means of an appropriate carriage 14 actuated by a hydraulic cylinder 15.

In fig. 3, it will be noted that each assembly formed by a rotary bearing 3, a loader 4, a shaft 16, a guide sleeve 17 and a hydraulic motor 18, is suspended from an oscillating frame 19 with three arms which is subjected to the action tension springs 20 allowing an elastic oscillation within certain limits. As a safety measure in the event that some of these springs break, buffers 21 are provided mounted on a fixed post on corresponding uprights 22.

Shock absorbers 23 fixed on the one hand by means of suitable staples 24 to the aforementioned uprights 22, on the other hand to spacers 25 integral with the oscillating frame 19, significantly reduce the noisiness of the mobile assembly during the centrifugation operation.

The electrical control panel 26 allows the actuation of a small hydraulic unit 27 comprising an electric motor 28, a triple pump housed inside a block of solenoid valves 29 and a heat exchanger 30 (fig. 3) for heating the oil, the latter supplying the entire installation both at low and high pressure.

In fig. 4, an embodiment of a mobile support for a coil can be seen, which support is formed by a core 31 with a frustoconical profile (this core can also be provided cylindrical) fixed elastically, by means of a stop 32, a spring 33 and a deformable pin 34, to the base element 35; the latter is provided with a lower guide 36 which can move inside slots made in the arms 37 and 38 (FIG. 5) of the magazines described later in more detail, with reference to FIGS. 7 to 10.

According to another embodiment of the invention, provision may be made to engage the coils on radial bars 39 and 40 (FIG. 6) fixed to a central sleeve 41.

This latter arrangement makes it possible to avoid the drawbacks resulting from the deformation of the lateral surface of the coil which comes to bear against the internal wall of the rotating basket 3 under the effect of centrifugal force.

This arrangement is adopted for very delicate types of yarn.

It goes without saying that one can imagine other embodiments for the chargers.

In fig. 7 and 8, an embodiment of an arm 42 of the magazine 4 has been illustrated, which has a slot 43 which widens in the rear part 44 in order to allow the projection of the guide 36 (fig. 4) projecting downwards from the base element 35 of the spool holder support 31. FIG. 9 and 10 clearly show the cross section IX-IX, respectively X-X, of the arm 42.

Of course, the particular embodiments of the machine have been indicated by way of nonlimiting example, said machine obviously being able to be produced in a different way, in particular according to its capacity, that is to say the number and the volume of the coils to be treated. More specifically, the loader arms may be five, if or eight in a row, while retaining the other characteristics of the machine.

The same goes for different types of chargers. All of these possible embodiments of the macbine must be considered to fall within the scope of the patent.

Claims (4)

1. Hydro-extractor for yarns in bobbins, suitable for the treatment of yarns in bobbins previously colored in dye tanks, characterized in that it comprises four reel carriers, two of which work inside rotating baskets (3) , themselves arranged inside two tanks (1 and 2) capable of being closed by means of covers (5 and 6), while the other two loaders are arranged on a loading plate (9) to allow the operations of unloading of the coils already treated and loading of the coils to be treated, the covers and the chargers being mounted on a carousel (10) actuated by a small hydraulic unit (27) and a corresponding control panel (26) arranged. 2. Hydro-extractor according to claim 1, characterized in that each coil holder support (21) is resiliently fixed, using a stop (32), a spring (33) and a pin elastic (34), to a base element (35) provided with a lower guide (36) which allows the radial displacement of each coil inside a groove (43) formed in each arm (42) of the magazine , which reel is pushed by centrifugal force against the internal walls of the rotating baskets (3). 3. Hydro-extractor according to claims 1 and 2, characterized in that during the centrifugation operation, each charger operates inside its basket (3) while the entire assembly comprising this rotating basket ( 3), its loader (4), its shaft (16), the sleeve (17) for guiding the latter and the hydraulic motor (18) is suspended from an oscillating frame with three arms (19) subjected to the action of tension springs (20) which allow its elastic oscillation within certain limits, the machine further comprising, as a safety measure in the event that some of the aforementioned springs break buffers (21) permanently anchored on corresponding uprights (22), as well as shock absorbers (23) fixed on the one hand by means of staples (24) to said uprights (22) and on the other hand to spacers (25 ) forming part of the oscillating frame (19) to significantly reduce the noisiness of the mobile assembly during the centrifugation operation, even at high speeds of rotation (1500 revolutions / minute). 4. Hydro-extractor according to claims 1 and 3, characterized in that each coil carrier charger comprises a central core (41) on which are radially fixed arms (42) or bars (39 and 40) on which are engaged the spools of yarn to be treated, which spools are free to move radially, but are retained by the internal wall of the basket (3) during the centrifugation operation.

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