GB2092190A

GB2092190A - Dyeing machine of the jigger type

Info

Publication number: GB2092190A
Application number: GB8134351A
Authority: GB
Original assignee: MCS Officina Meccanica SpA
Current assignee: MCS Officina Meccanica SpA
Priority date: 1981-01-30
Filing date: 1981-11-13
Publication date: 1982-08-11
Also published as: IT8102907A0; FR2499110B3; PT74040B; ES507265A0; IT1145806B; HK26785A; FR2499110A3; PT74040A; BR8108151A; ES8207246A1; DK517481A; GB2092190B; DE8132854U1; CH648365A5; CA1174479A

Abstract

A dyeing machine of the jigger type is adapted for pressurised operation. The machine comprises a tub 1 above which are located rollers 2, 3 for feeding and taking up the fabric piece, causing it to pass through the dyeing bath and between spraying nozzles. The tub 1 is mounted with one end fixed to a bottom structure 8 to which are coupled members such as a pump, motor, filter and the like. An envelope 9 is provided covering the tube 1 and sliding with respect thereto on outer and inner guides and wheels 10, 11 and 15, 16 respectively. The envelope 9 can be sealed against the bottom 8 such as to form an autoclave. <IMAGE>

Description

SPECIFICATION Dyeing machine of the jigger type The present invention relates to a dyeing machine of the jigger type, that is for open width treating and dyeing fabrics.

Background of the Invention The known jigger dyeing machines substantially comprise a dyeing tub, above which there are located a roller for feeding the fabric piece and a roller for taking up said fabric, with the possibility of carrying out a reversed operation, that is of causing the fabric to return from one roller to the other, thereby performing two or more passages through the tub, suitable guiding, driving and controlling means being provided for carrying out the mentioned operations. In these machines the dyeing is carried out at atmospheric pressure.

The development of new synthetic fibres makes it advantageous to carry out the dyeing in a pressurized autoclave, in such a way as to operate at a greater temperature and accordingly with greater efficiency and shorter times. On the other hand this is hindered by the fact that in the jigger machine the loading and discharging of the fabric are carried out transversely, thereby it is rather difficult to assemble the jigger set in the inside of an autoclave or pressurized vessel.

Summary of the Invention Thus, the main object of the present invention is to eliminate the thereinabove mentioned drawback of the known jigger dyeingmachines.

According to one aspect of the present invention this object is achieved by a dyeing machine of the jigger type comprising a dyeing tube provided with overlying rollers for feeding and taking up the fabric to be dyed in said tub bath, fabric guiding rollers, driving means for driving said fabric feeding and taking up rollers, a pump, filters, ducts and the like means for circulating the dyeing liquid, wherein said tub is mounted with one end to a face of a vertically extending fixed structure or frame forming the bottom of a pressurized vessel, an envelope being provided encompassing said tub and being effective to longitudinally slide on inner and outer guides and to be tight closed against said fixed bottom in such a way as to form an autoclave and opened by axially sliding away from said fixed bottom to allow for said fabric to be loaded and discharged at said tub sides.

According to another aspect of the present invention it is further provided that the fabric piece, before entering the tub bath and exiting therefrom, is caused to pass between a plurality of spraying nozzles, effective to further facilitate the soaking and washing of the fabric.

Brief Description of the Drawing The present invention will become more apparent from the following description of an exemplary embodiment thereof, with reference to the accompanying drawing, where: fig. 1 is a cross-section view illustrating the dyeing machine according to the present invention fig. 2 is a partially sectioned side view thereof; fig. 3 is a detail view illustrating a detail of the assembly for slidingly driving the outer envelope of the machine; and fig. 4 is a perspective schematic view illustrating the overall dyeing machine according to the invention.

Description of the Preferred Embodiment With reference to the drawing figures, at 1 there is indicated a cradle tub, therein is contained the dyeing bath. This tub is fixed to a suitably supported stationary vertically extending structure or frame, indicated at 8, thereto there are associated and fitted all of the conventional known members of a dyeing machine, such as motor, pump, filter and the like, which will not be further described herein. Above the tub 1 there are mounted the known members forming the jigger type of dyeing assembly. These members comprise a roller 2 for feeding the fabric piece 5 and a roller 3 for taking up said fabric, and a plurality of rollers 4 for guiding the fabric 5.This latter, fed from the roller 2, by means of suitable conventional fabric driving means, is caused to pass on the rollers 4 and through the dyeing bath, and, finally is taken up by the roller 3.

At the end of this operation or step, the rotation direction is reversed, thereby the fabric 5 returns from the roller 3 to the roller 2 and again to the roller 3 for a number of times set by a knovvn apparatus (not shown) and passing through the dyeing bath.

It should be noted that the invention also provides that the fabric, in addition to passing through the bath, is also caused to pass between a provided plurality of spraying nozzles, indicated at 6 and 7, effective to furtherfacilitate the soaking of the fabric itselt According to the invention, it is provided that the dyeing operation be carried out under pressure.

To this end the tub 1 is covered by a movable envelope 9 which is mounted on wheels 11 effective to slide on outer rails 10. In the inside thereof said envelope 9 is provided with guides or rails 1 5, engaging a pair of wheels 16 provided at one end of the tub 1, at the side opposite to the bottom 8. The opening and closing movement of the envelope 9 may be carried out by a manual pushing operation, or by means of a geared motor 14 and a rack and pinion assembly shown at 1 2 and 13. As it is shown, the envelope 9, as it is moved away from the bottom 8, provides free access to the jigger assembly located in the tub 1 which latter, in the complete opening condition of the envelope or shell 9, rests by its end wheels 1 6 on the envelope rails 1 5.

Upon having loaded the fabric, the envelope 9 is pushed to the closure position against the bottom 8 where the closure is of tight type as obtained by rotating a ring 17, provided with front coupling.

Then, after the closure of the assembly, the jigger set is energized which carries out the dyeing operation in the inside of the members 8 and 9 which, as it should be apparent, form an autoclave of sorts.

At the completion of the dyeing, in order to transversely discharge the dyed fabric, it is sufficient to rotate again the ring closing the bottom 8 and cause the envelope or shell 9 to move away from said bottom 8, in such a way as to again obtain access to the inside of the tub 1 from either side of this latter.

Obviously the invention is not limited by the exemplary details thereinabove illustrated and/or described, being susceptible to all the variations or equivalent arrangements falling within the scope thereof.

Claims

1. A dyeing machine of the jigger type comprising a dyeing tub provided with overlying rollers for feeding and taking up the fabric to be dyed in said tub bath, fabric guiding rollers, driving means for driving said fabric feeding and taking up rollers, a pump, filters, ducts and the like means for circulating the dyeing liquid, wherein said tub is mounted with one end to a face of a vertically extending fixed structure or frame forming the bottom of a pressurized vessel, an envelope being provided encompassing said tub and being effective to longitudinally slide on inner and outer guides and to be tight closed against said fixed bottom in such a way as to form an autoclave and opened by axially sliding away from said fixed bottom to allow for said fabric to be loaded and discharged at said tub sides.

2. A machine according to claim 1, wherein a multiple ring is provided having a front coupling and effective to provide a quick closure of said fixed bottom and movable envelope.

3. A machine according to claim 1, wherein at least two spraying nozzle pairs are provided above said tub for spraying the fabric entering said bath and exiting therefrom.

4. A machine according to claim 1, wherein a pignon-rack driving assembly is provided effective to drive or displace said movable envelope.

5. A machine according to claim 1, wherein said tub is provided, at the end thereof opposite to said fixed closure bottom, with at least a wheel pair resting on inner guides of said movable envelope.

6. A dyeing machine of the jigger type which is substantially as described herein with reference to and as illustrated in the accompanying drawings.