CN1422797A - Support roller - Google Patents

Abstract

The invention relates to a support roller (32) for producing spun yarn cylinder, which is located near the winding head with a traversing device and supports the cylinder driven by the shaft. The yarn is clamped between the outer surface of the cylinder and the casing face of the support roller (32). The support roller (32) has an acting shape figure, the yarn when reciprocating movement of passing through the working width of the cylinder is always released time after time by the clamping action. When using the bobbin winder or spinning bobbin winder combination machine, the bobbin process of the yarn can be improved by simple manner. The support roller (32) of the invention can improve quality and reduce cost in the producing process.

Description

Carrying roller

Technical field

The present invention relates to according to the described a kind of carrying roller that is used to produce the spun yarn bobbin of claim 1 preamble, this carrying roller is positioned at a doff head next door that reciprocating apparatus is arranged.

Background technology

Go wrong continually during conveying filament fast.For example in production chemical fiber described in the DE-OS 23 33 992, when polyamide filament or polyester capillaries, the draw rate of tow surpasses 3000m/min, such as the tow that uses 6000m/min and form as the smooth monofilament of arrangement in parallel substantially high-speed so down, can be inclined to and wipe disconnected mutually at the turning point place and on the feedway of rotation, twine roller.

Learn that from patent DE 195 403 42 A1 this high-speed following, owing to the non-persistent unwinding state of silk from feedway surface unwinding produces many difficulties, particularly tow adopts high withdrawal speed when drafting process.Be the backing-off performance of monitoring silk, silk speed should be constant as far as possible, detects by the touch roll or the carrying roller that are pressed against on the bobbin.Here touch roll is not an independent drive, but bobbin is rubbed and rotates.For the friction reason, the surface of touch roll normally is designed to perfectly smooth.But smooth touch roll also can be twined by silk.Aspect filament yarn,, this new spun tow forms the curling round the roll tendency on very smooth roller even also existing.This tendency is strengthened owing to strand is subjected to continuous clamping process.In order to get rid of the danger of this curling round the roll, advise that the design of touch roll should be distributed with groove at whole cylindrical outer surface in the DE 195 403 42 A1 patents.This just obviously improves silk through the drive ability than minor diameter touch roll surface.Here point out that though desired effect is to strengthen with the increase of the groove surface component on touch roll surface, the conveying effect of tow also is affected along with the increase of groove surface component simultaneously.Therefore functional for the roller of keeping in touch, necessary confinement groove face component.The roller of this shape also should be used as live roll, is used for the doff transmission of bobbin-winding machine of transmission chemical fibre silk.These grooves are at this shallow longitudinal slot line that is designed to parallel axes on by the roller of transmission.The shape of groove is identical on the width of whole roller.Groove is actually transverse to the silk service direction.Can prevent smooth like this and swing.This roller can manufacture press polished roller, can rely on friction to reach high synchronous effect.

Even under less silk withdrawal speed, carry out the winder process, when 2000m/min is following, can not eliminate these problems such as silk speed.Patent DE 199 08093 A1 that belong to this class have introduced a kind of carrying roller or backer roll with bright and clean outside face.This curling round the roll prerequisite that filament yarn occurs is non-existent in staple yarn processing.Do not require the above-mentioned relevant measure of taking when therefore processing staple yarn.When producing the staple yarn bobbin, the twist of carrying out yarn according to the sth. made by twisting of input yarn to (S-twists with the fingers or Z-twists with the fingers) by the crank motion of yarn when traversing process reduces (backtwisting) and strengthens the twist (Zudrehen) during at opposite sense of motion.If the yarn of input has only a little twist, then have soon completely in the yarn or bigger backtwisting position.This just causes the yarn fracture or produces superfine details.Because these details are just generations general yarn control monitor unit after, unrecognizedly go out, so details is not removed.Extreme details in these yarns of having reeled can continue to add man-hour at yarn, goes wrong when the unwinding and big fracture of expense and fault can occur in final products as yarn.Owing to the backtwisting of yarn produces the danger of so-called " penetrate and wear ", yarn those above-mentioned problems so also can occur as the outside face of yarn circle around bobbin.Device network according to DE199 08 093 A1 patents becomes the yarn of tube that undesirable serious filoplume is arranged morely.

Use this cylinder known to everybody, can not eliminate undesirable filoplume, can not eliminate the backtwisting of yarn.

Summary of the invention

Task of the present invention is to improve the carrying roller of this known production spun yarn bobbin.

This task can solve according to the carrying roller that the present invention has claim 1 feature.

The content that other advantageous technical schemes of the present invention are dependent claims.

Use according to carrying roller of the present invention, this yarn fracture of the backtwisting of yarn and so-called " penetrate and wear " or the shortcoming effect of details are most of even be suppressed fully.The roller of the band lateral trench known to use chemical fibre department or the filament yarn aspect may not have the change of helping in so here.The filoplume of yarn significantly descends, and can reach the decline of 20% order of magnitude or more.

The failure frequency number of times can reduce.Floor time just reduces essential number of operations a little and the minimizing operating personal like this.Not only improve the efficient of production process, and improved the quality of yarn and the end product quality that this yarn is made.

On simple and the manufacturing technology easily and on the expense aspect the favourable this carrying roller of production, profile is made up of groove, α angle that is at least 40 ° of outer body line formation that each groove is and parallels to the axis.The α angle of all grooves all is identical on the best carrying roller.

Use carrying roller of the present invention can overcome above-mentioned shortcoming particularly well, as long as groove at least all around the whole circumference of carrying roller once.

Application α angle is 90 ° a carrying roller, suppresses filoplume most effectively.

If according to the carrying roller of claim 6, by axially dividing section, take the direction of each α angle and fro guiding-yarn device input yarn suitable, make the effect of carrying roller can obtain to improve.

Use this carrying roller also can reach corresponding effects, promptly the groove of carrying roller outside face intersects.

Select another kind of idler structure, promptly on the carrying roller whole outer surface, be distributed with the profile of node shape, also can reduce the backtwisting of yarn or stop backtwisting fully.

Use according to carrying roller of the present invention, can improve the winder process of yarn and reach the effect that improves the quality with cost-cutting with plain mode.

Other details of the present invention will be illustrated according to examples of implementation shown in the figure.

Brief Description Of Drawings

Wherein:

One of Fig. 1 is equipped with the doff head lateral plan of bobbin-winding machine of the production bobbin of a carrying roller;

The carrying roller of Fig. 2 with groove profile;

The A-A view of Fig. 3 Fig. 2 middle idler roller;

Fig. 4-6 has the groove-shaped carrying roller form of implementation of replacing mutually with Fig. 2 carrying roller;

A kind of outside face of Fig. 7 is the carrying roller of node type.

The specific embodiment

Fig. 1 be one whole with the 1 cross winding automatic winder lateral plan of making label.Common this automatic winder does not give in the drawings many identical doff heads 2 between the terminal location that illustrates.As we all know, these doff heads 2 become the cross winding bobbin 4 of large volume with cop 3 rewindings of spinning frame production, therefore do not remake to be described in detail.The cop 3 that provides is positioned in unwinding position 5, and yarn 6 unwindings are gone to winder.Usually each doff head has different devices to guarantee that these control positioies move in order.Fig. 1 represents one from cop 36, one suction nozzles 7 of yarn and yarn trap 8 to bobbin 4 operations.In addition, doff head 2 has 13, one yarn pulling force sensors 14 of 12, one yarn cutting devices of 11, one waxing attachments of 10, one yarn clearers of 9, one yarn tension devices of a device of splicer and a bottom yarn sensor 15.Winding device 16 is made up of a bobbin carriage 17, and carriage movably supports around S. A. 18.During the winder process, bobbin 4 abuts in design as on the carrying roller 19 of pressure roller and not have the pressure roller that drives by frictional connection and this synchronous with its surface.The driving of bobbin 4 is to carry out via the driving device that directly is placed on the bobbin carriage 17 or is integrated in the bobbin carriage 17 of bobbin shaft by an adjustable speed.Reciprocating when a yarn traverse gear 20 being set making yarn 6 winder processes.During doff, yarn 6 is by the 21 guiding crank motions of the thread-carrier on a guide plate 22.Behind the full tube of doff, bobbin 4 is delivered to a bobbin conveying arrangement 23 by automatic transfer unit, is transported to bobbin transfer post or similar facility that the machine side is settled.

Other details of this doff head can be referring to DE 199 08 093 A1 patents.

Fig. 2 represents a carrying roller 24 that special-shaped outline is arranged, and from guide plate 22, supporting-point roller is divided into two sections 25,26.As special-shaped outline, introduce groove 27 at the outside face of carrying roller 24.Groove 27 is designed to groove, and its cross-sectional plane is being walked upwards to keep identical around the helix of S. A. 28.The outer body line of a groove 27 and an axially parallel forms the α angle respectively.With the outer body line skew that angle α quantizes, its absolute value through the whole working width of carrying roller 24 is constant.And from zone 25 during to regional 26 transition, the direction of groove 27 also changes thereupon, forms the V-arrangement profile on the shell surface of carrying roller 24.Groove 27 is to be evenly distributed on the circumference of carrying roller 24 and to have equal spacing mutually, and the details that this spacing can non-complete ratio illustrates from Fig. 3 is found out.The width B of groove 27 is 3mm, and degree of depth T is 1.5mm.The carrying roller diameter is 24mm.

The carrying roller 29 of Fig. 4 has two grooves 30,31, and groove is looped around with helix on the shell surface of carrying roller 29, and each angle α is 80 °.But with the deflecting direction of the outer body line that parallels to the axis be inequality.This spacing clocklike that intersects to form of groove 30,31.Appearance profile is suitable with the direction of input yarn in the marginarium in the zone of traversing by this way, thereby has improved the effect of carrying roller 29 in the marginarium.

Fig. 5 represents the carrying roller 32 of a with groove 33, its groove be on horizontal S. A. 34 planes around.Therefore angle α is 90 °.Design at roller 32 can be very effective at the interlude in the zone of traversing.

Fig. 6 represents a carrying roller 35 that is divided into three zones 36,37,38.The profile phase of the profile of zone line 36 and the carrying roller of Fig. 5 32 meets.The profile in two zones 37,38 is equivalent to the profile of Fig. 4 middle idler roller 29 in addition.The design of carrying roller 35 is played the carrying roller 29 of Fig. 4 in the marginarium improved action and the carrying roller 32 of Fig. 5 in the differential gap very the actv. outline effect be combined in one.The profile that carrying roller 39 shown in Fig. 7 has node 40 to form.Be smooth above the node 40.The another kind of selectable graphic carrying roller design of not giving, its node protrudes.

Carrying roller design of the present invention is not limited to the above embodiments, and for example carrying roller can have bigger diameter.Though the advantage of minor diameter carrying roller is, the to-and-fro guiding device location can be near bobbin, and the winder transmission also can select to use the carrying roller of a diameter 50mm.

Claims (8)

1. be used for producing the carrying roller that the winding head next door of traverse gear is arranged that is positioned at of spun yarn bobbin, it turns to yarn and supports by driven off by shaft bobbin, here the bobbin outside face is the shell surface clamping yarn that is subjected to carrying roller, it is characterized in that carrying roller (19,24,29,32,35,39) design of such appearance profile is arranged, promptly yarn (6) is held effect through bobbin (4) working width repeatedly short moment and discharges when crank motion.

2. according to the carrying roller of claim 1, it is characterized in that groove (27,30,31,33) profile forms the α angle that is at least 40 ° respectively with an outer body line that parallels to the axis.

3. according to the carrying roller of claim 2, it is characterized in that the size of angle α makes every groove (30,31,33) at least around the whole circumference of carrying roller (19,29,32,35) once.

4. according to the carrying roller of claim 2, it is characterized in that angle α equals 90 °.

5. according to one of in the claim 2 to 4 carrying roller, it is characterized in that angle α is identical at all grooves (27,30,31,33).

6. according to one of in the claim 2 to 4 carrying roller, it is characterized in that carrying roller (24,25) be by axially being divided into some zones (25,26,36,37,38), here each α angle size the zone (25,26,36,37,38) be identical in, its feature also is at least two zones (24,36,37; 26,38) α angle is to depart from mutually.

7. according to one of in claim 2 or 3 carrying roller, it is characterized in that groove (30,31) intersects on the carrying roller shell surface.

8. according to the carrying roller of claim 1, it is characterized in that appearance profile is made up of the node that is distributed in the whole casing face (40).

Images