DK141294B - Locking mechanism for top plates for distributor pipes in textile processing apparatus. - Google Patents

Description

ON PUBLICATION REPORT 1 4 1 294 DENMARK mi intci. · D ob b 23/00 '(21) Application No 5583/76 (22) Filed on 10 Dec. 1976 (23) Race day 10 dec. 1976 (44) The application presented and the petition published on 18th Γβΐ}. 1 98Ο

DIRECTORATE OF

PATENT AND TRADEMARK BASIS <* «Priority requested for (71) CHOICE. HENRIKSEN A / s, Sydmarken 44, 2860 Søborg, DK.

(72) Inventor: Hans Børge Nielsen, Ob. Rebbergweg 68, 4153 Reinach, CH.

(74) Plenipotentiary in the proceedings:

The company Chas. Hude.

(54) Locking mechanism for top plates for distributor tubes in textile processing appliances®.

The present invention relates to one locking mechanism for top panels for distributor tubes in apparatus for wet processing and drying of textile materials.

In such apparatus, the textile material, typically yarn, is placed in the form of so-called windings on manifolds, through which the treating liquid or gas is circulated in such a way that it penetrates from the perforated manifolds through the windings. At the end of the distributor tubes, the windings are held by a top plate which is somehow locked. The top plate is generally provided with a central extension tube of slightly larger diameter than the distributor tube, so that this extension tube can be displaced on the distributor tube, and thereby adjust the top plate in different positions.

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The simplest known locking mechanism for such top plates is a nut provided with a handwheel which is rotated onto a threaded spindle which exists as an extension at the free end of the manifold in the direction of its axis. This mechanism is slow and cumbersome to operate because the nut to lock the top plate must be manually screwed to the bottom, that is, for abutment against the top plate or the central extension tube.

Another known locking mechanism is an improvement of the above-mentioned in that the nut is split and each part spring-loaded so that the nut can be displaced on the threaded spindle without having to turn. This locking mechanism requires in order to operate a pressure from below, ie. from the windings clamped on the manifold. Furthermore, it requires a special release mechanism, is complicated and expensive to manufacture, and is not mechanically strong.

A third known locking mechanism consists of a pin which is manually inserted through an opening in the central extension tube of the top plate and through the distributor tube. This mechanism locks the top plate against movement in both directions of the manifold, but it must be operated manually, which causes difficulties because in many cases the windings are compressed pneumatically or hydraulically, so that the operator must be very careful to pass the stick through the openings in the extension tube. and the manifold at the right moment.

Further, from the specification of Danish Patent Application No. 6223/67, a locking mechanism is known which has a spindle in axial extension of the manifold and an inner diameter cuff connected to the outer diameter of the spindle, and by which locking is effected by friction between some balls and the smooth spindle. This locking mechanism requires manual operation and is only suitable for small appliances because very limited force can only be transferred by friction between balls and a smooth surface.

The locking mechanism of the present invention addresses the shortcomings of the known locking mechanisms in that it is self-acting in the sense that it automatically locks the top plate into position when the top plate is pressed into the distributor tube the desired piece and acts without counterpressure from the windings. Moreover, it is of a simple and robust construction.

The locking mechanism according to the invention is of the kind comprising a spindle in axial extension of the manifold and one with the top plate or a longitudinal tube on this fixed coupling having an inner diameter corresponding to the outer diameter of the spindle, and is characterized in that the sleeve is slidable on the spindle, one or more annular grooves being formed inside the cuff and the outside of the spindle, wherein a ring spring is arranged which tightens around the spindle and has such cross-sectional dimensions that it can be accommodated in the annular spaces that form when the recesses of the cuff and spindle face each other.

In the locking mechanism according to the invention, it is the annular spring which, when in the annular space formed by the depressions in the sleeve and spindle, acts as a stop means which prevents displacement of the sleeve on the spindle so that the top plate is locked in a certain position on the spindle. Depending on the cross-sectional dimensions of the annular spring relative to the grooves in the sleeve and spindle, and on the design of the flanks in these recesses, the locking mechanism may act in various ways suitable for different ways of attaching the top plate and compressing the windings and of different device sizes.

A particularly simple embodiment of the locking mechanism, particularly suitable for smaller appliances in which the top plate is applied and the compression of the windings is done manually, is characterized in that the cuff has a single annular recess and the spindle has several annular recesses and the ring spring has such cross-sectional dimensions. as it tightens around the spindle in one of its grooves, protrudes outside the circumference of the spindle and into the groove of the sleeve, the flanges of the grooves in the sleeve and spindle forming such angles with the axis of the spindle that the ring spring is guided by the sleeve in its displacement inward on the spindle but not by its displacement outward on the spindle.

In this embodiment, the annular spring is haphazardly shaped as a hairpin shaped hoop having an annular portion which grips the spindle and whose free ends are crossed and provided with plates or similar fingerprints by which the compression of the spring can be extended.

Hereby one can manually release the locking mechanism, namely by simply squeezing the fingertips together and thereby extending the spring so that it can be displaced outwardly on the spindle, the spring being extended in extended state from the flanks in the recesses which stop its movement as it in the tightening condition lies in the recess.

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Another embodiment of the locking mechanism is characterized in that the cuff has a single annular groove and the spindle several annular grooves, and the ring spring has such cross-sectional dimensions that when it tightens around the spindle in one of its recesses it protrudes outside the circumference of the spindle the recess in the cuff, wherein the recesses in the cuff and spindle are each formed symmetrically and with the same flank angles, and the recess in the cuff has such depth that the annular spring can be accommodated therein without projecting outside the inner cylinder surface of the cuff. This mechanism locks the top plate against unintentional axial displacement in both directions, displacement being possible only when the annulus is extended, which e.g. can be done in the same manner as in the embodiment described above.

A third embodiment of the locking mechanism, which is particularly suitable for large appliances in which it is desirable to be able to compress the windings other than manually, is characterized in that the cuff has one or more annular recesses and the spindle km a single annular recess of a such a size that it can fully receive the ring spring so that it does not protrude outside the outer circumference of the spindle and the outer end of the spindle is provided with a central bore in which a pin is displaceable, which pin is fixedly fixed with a ring, which, by the axial displacement of the pin, can move out and in of the recess in the spindle at the bottom of this recess under the annular spring.

This embodiment of the locking mechanism differs in its effect from the above-described embodiments in that the ring spring is stationary in the groove in the spindle and is not displaced in axial direction thereon, and in that the ring spring acts as a stop when in the extended state. This embodiment is therefore particularly robust and suitable for large appliances, where the windings are compressed with mechanical aids which can be connected to the pin in the spindle in such a way that it is automatically pressed in at the desired time, thereby causing the ring to slide under ring ring so that it expands and acts as a stop member.

The cross section of the ring spring is preferably circular because this shape gives the greatest freedom to the shape of the recesses in the cuff and spindle and because it is simple to manufacture. However, when the ring spring has a circular cross-section, there is only a very small abutment surface between the ring spring and the flanks of the recesses if these are flat surfaces, which can give rise to undesirable large local loads of the materials. According to the invention, the recesses in the cuff and spindle are therefore suitably formed with curved flanks having the same radius of curvature as the cross-section of the annular spring, if it has a circular cross-section.

In order to obtain large abutment surfaces between the ring spring and the flanks of the cuff and spindle recesses, the ring spring according to the invention may be formed with an angular cross-section having surfaces parallel to planar flanks of the cuff and spindle recesses.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of an embodiment of a locking mechanism according to the invention; FIG. 2 shows an embodiment of the ring spring in a locking mechanism according to the invention in the direction towards the end of the manifold; FIG. 3 is a sectional view of another embodiment of a locking mechanism according to the invention; FIG. 4 is a sectional view of a third embodiment of a locking mechanism according to the invention; FIG. 5 shows an embodiment of the ring spring in a locking mechanism according to the invention; FIG. 6 is a sectional view of an embodiment of a locking mechanism according to the invention; and FIG. 7 is a sectional view of an embodiment of a locking mechanism according to the invention.

In the three embodiments of the locking mechanism shown in FIG.

1, 3 and 4, the manifold is shown vertically, and the movement of the top plate relative to the manifold is therefore vertical up and down, but other devices have horizontal manifolds, and it will be understood immediately that the locking mechanism works in the same way in this case, operation is independent of the position of the manifold.

In FIG. 1, 1 is a distributor tube, in axial extension of which is found a spindle 2, 3 are windings of textile material, 4 a top plate and 5 an extension tube on the top plate. The spindle 2 has annular recesses 6 formed with trapezoidal cross-section such that the upper flank 7 forms a large angle with the axis of the spindle and the lower flank 8 forms a smaller angle with the axis of the spindle.

Firmly connected to the extension tube 5 is a sleeve 9 which can slide on the spindle 2. In the inner cylinder surface of the cuff is an annular recess 10, the upper flank 11 forming a large angle with the axis of the spindle and the lower flank 12 forming a smaller angle. with the axis of the spindle. In the annular space between the recesses 6 and 9 is arranged an annular spring 13 which tightens around the spindle.

When the windings ^ are arranged on the manifold 1 and the top plate 4 is brought down over the spindle 2 and the manifold 1 for compressing the windings, the sleeve 9 will slide downwardly on the spindle 2, and because the flank 11 forms a large angle with the spindle 2. axis, while the flank 8 forms a smaller angle with the axis of the spindle, the ring spring 13 having dimensions such that it protrudes outside of the recess 6 will be directed downwardly on the spindle as the spring expands and slides from the recess 6 onto the cylinder surface of the spindle. until, upon further movement, it descends into the next recess in the spindle as a result of its spring force. When the windings are compressed to the desired degree and the annulus is in one of the recesses 6, the top plate will be locked in its position, since even an increased pressure from the windings due to their expansion will not be able to push the annulus upwards and out of the recess 6, because the upper flank 7 forms a large angle with the axis of the spindle and the lower flank 12 forms a smaller angle with the axis of the spindle, so that the flank 12 actually pushes the ring spring 13 into the recess 6.

FIG. 2 shows an embodiment of the ring spring 13 which can be used in connection with the locking mechanism shown in FIG. 1. As in FIG. 1 is the 4 top plate, 9 cuff and 2 spindle. The annular spring is formed as a hairpin-shaped bracket 14 which has an annular portion 15 which tightens around the spindle 2. The free ends 16 of the bracket are provided with plates 17 which act as a fingertip, and upon whose compression the annular portion 15 is expanded, thus that the ring spring can be removed from the recess in the spindle and together with the cuff 9 and the top plate 4 is moved upwards, thereby releasing the locking mechanism. This ring spring embodiment is particularly useful for smaller devices with small diameter spindles to avoid overloading of the spring material.

FIG. 3. shows an embodiment of the locking mechanism according to the invention which holds the top plate against axial movement in both directions; here formed symmetrically and with such flank angles that flanks 8 and 11 are parallel and flanks 7 and 12 are parallel. The recess 10 has, by virtue of an additional turning 18 at the bottom, such a depth that the annular spring 13 can be accommodated in the recess 10 without extending outside the inner cylinder surface of the sleeve, and the sleeve with the top plate can thereby be displaced both up and down on the spindle. When the ring spring 13 is in a tightened state in a recess 6, it will be pressed down into the recess by a slight axial movement of the cuff 9, thereby retaining the top plate in its position. This embodiment of the locking mechanism is particularly suitable if the processing of the textile material is of such a nature that both extensions and contractions of the windings 3 can occur.

In the embodiment of FIG. 4, the spindle 2 is provided with a central bore 19 for receiving a pin 20. This pin is through a rod 21 in fixed connection with a ring 22 which has an obliquely cut lower edge 23. In the spindle, two elongates are further formed. holes 24, so that the rod 21 can act axially with respect to the spindle as the pin 20 is displaced up or down in the bore 19. This construction is provided by the end of the spindle 2 being provided with a thread 25 holding a hub 26, the inside of which forms a guide for the ring 22. In this embodiment, the spindle 2 has a single annular recess 6. of such dimensions relative to the dimensions of the ring spring 13 that the spring can be fully accommodated in the recess without projecting outside the outer cylinder surface of the spindle. The top plate 4 is provided with a sleeve 9 which in this embodiment has several annular recesses 10 in the inner cylinder surface. In the drawing, for the sake of clarity, only a single recess 10 is shown in the cuff.

The locking mechanism shown in FIG. 4, acts in that when the U1294 top plate 4 is pushed into the spindle 2, the pin 20 is pulled out (up on the drawing) and the ring 22 is thereby pulled out of the recess 6, so that the ring spring 13 rests at the bottom of the recess 6 .

When the top plate is pressed down the desired piece against the windings, the pin 20 is pressed, whereby the ring 22 moves into the bottom of the recess 6 and extends the ring spring 13 so that it protrudes into a recess 10 in the cuff. Thereby, the top plate 4 is locked against axial movement in both directions. The locking mechanism is triggered by pulling out the pin 20 so that the ring spring clamps at the bottom of the recess 6 so that the sleeve 9 can be freely displaced on the spindle 2. The pin 20 can be moved manually or mechanically, but the embodiment shown is particularly suitable for mechanical operation. , eg. in large appliances, the pin 20 may then be formed as a piston rod which is controlled by an apparatus for applying windings and top plate.

FIG. 5 shows an embodiment of a ring spring 13 which can be used in the FIG. 4 illustrates the locking mechanism.

FIG. 6 shows an alternative embodiment of an annular spring 13 having angular cross sections with faces parallel to the planar flanks 11 and 12 of the recess 10 in the cuff 9 ·

FIG. 7 shows an embodiment in which the flanks 11 and 12 in the groove 10 in the cuff 9 and the flanks 7 and 8 in the groove 6 in the spindle 2 are curved surfaces with the same radius of curvature as the ring spring 13. This gives large contact surfaces between the ring spring and the flanks of the grooves and thus less hard. loading the materials.

Claims (4)

9 141294 Patent Claims. A locking mechanism for top plates for distributor tubes in apparatus for wet processing and drying of textile materials, comprising a spindle in axial extension of the manifold and one with a top plate or a pre-laying tube on this fixed diameter inner sleeve corresponding to the outer diameter of the spindle. in that the cuff is slidable on the spindle, one or more annular grooves having an annular spring which is tightened about the spindle and having such cross-sectional dimensions that it can be accommodated within the cuff and externally of the spindle in the annular space that forms when the recesses of the cuff and spindle are facing each other. Locking mechanism according to claim 1, characterized in that the cuff has a single annular groove and the spindle several annular grooves, and the ring spring has such cross-sectional dimensions that when it tightens around the spindle in one of its recesses it protrudes outside the circumference of the spindle and into the recess of the cuff, wherein the flanks of the recesses of the cuff and spindle form such angles with the axis of the spindle that the annular spring is guided by the cuff by its displacement inwardly on the spindle but not by its displacement outwardly on the spindle. Locking mechanism according to claim 1, characterized in that the cuff has a single annular recess and the spindle has several annular recesses and the annular spring has such cross-sectional dimensions that it reaches? it tightens around the spindle in one of its recesses, protrudes outside the circumference of the spindle and into the recess in the cuff, each of which the recesses in the cuff and spindle are each formed symmetrically and with the same flank angles, and the recess in the cuff has such depth that the annular spring extends condition can be accommodated therein without projecting outside the inner cylinder surface of the cuff. Locking mechanism according to claims 1-3, characterized in that the annular spring is a hairpin shaped bracket having an annular portion which engages the spindle and whose free ends are crossed and provided with plates or similar fingertips, at whose compression the spring can extended.