DE1510719C

DE1510719C - Cleaning device for Streckwex-ks z y linder

Info

Publication number: DE1510719C
Authority: DE
Inventors: Harry Shields Charlotte; Morrow Alfred Cecil Lowell; N.C. Barr jun. (V.St.A.)
Original assignee: Luwa AG, Zürich (Schweiz)

Description

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Die Erfindung betrifft eine Reinigungsvorrichtung Stützung der Maschine sind deren Vibrationen vielfür Streckwerkszylinder mit einem den Zylinder von fach unterschiedlich, so daß eine derartige Vorrichoben her im wesentlichen unter dem Einfluß der tung unzuverlässig ist. Bei dem an sich erwünschten Schwerkraft berührenden, eine schwingende Be- Idealzustand", einer vollkommen vibrationsfreien wegung ausführenden Abstreifer, dessen Schwing- 5 Maschine würden überhaupt keine Schwingungen achse parallel zur Zylinderachse verläuft und dessen auf den Abstreifer übertragen werden,
elastische Abstreifhülse die Zylinderoberfläche ent- Die mit der Erfinduung zu lösende Aufgabe besteht lang einer Linie berührt. nun darin, die bekannten, am StreckwerkszylinderThe invention relates to a cleaning device supporting the machine, the vibrations of which are much different for drafting cylinders with a cylinder of the fold, so that such a device is essentially unreliable under the influence of the device. In the case of the actually desired gravity touching, a vibrating ideal state ", a completely vibration-free movement executing scraper, whose vibrating machine would not run parallel to the cylinder axis and which would be transmitted to the scraper,
elastic Abstreifhülse the cylinder surface ent- The task to be solved with the invention consists of long touches a line. now in it, the known ones, on the drafting system cylinder

Reinigungsvorrichtungen an umlaufenden Zylin- anliegenden und periodisch von diesem abhebendenCleaning devices adjacent to the circumferential cylinder and periodically lifted off from it

dem von Streckwerken, welche einen den Zylinder io Abstreifvorrichtungen so zu verbessern, daß siethat of drafting devices, which improve the cylinder stripping devices so that they

ständig berührenden Abstreifer aufweisen, sind be- möglichst geräuschlos, aperiodisch abheben undhave constantly touching wipers, are as noiseless as possible, aperiodic lift off and

kannt. Durch die Verwendung solcher Abstreifer, keine nachteiligen spinntechnischen Auswirkungenknows. The use of such scrapers means that there are no detrimental effects on the spinning technology

insbesondere zusammen mit einer Absaugvorrich- haben.especially together with a suction device.

tung, lassen sich die Zylinder relativ leicht sauber Diese Aufgabe wird nach der Erfindung dadurch halten; jedoch besteht bei allen Abstreiforganen die *5 gelöst, daß bei einem Abstreifer, dessen Schwing-Gefahr, daß an ihnen die vom Zylinder abgestreif- achse parallel zur Streckwerkszylinderachse verläuft ten Fasern teilweise haftenbleiben, insbesondere und dessen elastische Abstreifhülse die Zylinderoberdann, wenn sich an den Abstreifern schon Fett, fläche entlang einer Linie berührt, diese Berüh-Schmelze od. dgl. angesammelt hat. Es können sich rungslinie in Ruhelage des Abstreifers vor der durch auf diese Weise trotz der beispielsweise vorhan- »° die Zylinderachse und die Schwingachse des Abdenen Absaugung Faserbärte an den Abstreifern streifers verlaufenden Ebene liegt, und daß der Abbilden, die, wenn sie genügende Größe erreicht streifer in mit Schlitzen versehenen Lagerbügeln haben, die Reinigungswirkung des Abstreifers be- derart verschiebbar gelagert ist, daß dieser bei jeder einträchtigen. Überdies besteht die Gefahr, daß sich infolge Reibungsmitnahme durch den sich drehen-Teile dieser Faserbärte am Zylinder aufwickeln oder ^a5 den Zylinder verursachten Schwingung kurzzeitig in das zu verstreckende Faserband gelangen. Selbst vom Zylinder abhebbar ist.device, the cylinders can be cleaned relatively easily. This object is achieved according to the invention; However, with all stripping elements there is the problem that with a stripper, the risk of oscillation that the stripping axis from the cylinder runs parallel to the drafting cylinder axis, the fibers stick to them, in particular and its elastic stripping sleeve, the cylinder on top of it when touching the Wipers already have grease, touched the surface along a line, this famous melt or the like has accumulated. In the rest position of the scraper, there can be an approximation line in front of the plane running through this way despite the e.g. have scrapers in bearing brackets provided with slots, the cleaning effect of the scraper is mounted displaceably in such a way that it affects everyone. In addition, there is the risk that as a result of frictional entrainment by the rotating parts of these fiber tufts wind up on the cylinder or ^a 5 vibration caused the cylinder briefly get into the sliver to be drawn. Can even be lifted off the cylinder.

bei periodischer manueller Reinigung der Abstreifer Durch eine solche Anordnung des Abstreiferswith periodic manual cleaning of the scraper By such an arrangement of the scraper

kann diese Gefahr nicht vollkommen ausgeschlossen wird also erreicht, daß dieser gegenüber dem Zylin-if this risk cannot be completely ruled out, it is achieved that this danger is opposite to the cylinder

werden. der eine zweifache Bewegung ausführt. Es entstehtwill. who performs a double movement. It arises

Man hat bereits erkannt, daß bei periodischem 3» nämlich durch die Anstellung des Abstreifers bezüg-It has already been recognized that in the case of periodic 3 »

Abheben des Abstreifers vom Zylinder die Ansamm- lieh der Drehrichtung des Zylinders nicht nur eineLifting the scraper from the cylinder the accumulation lent the direction of rotation of the cylinder not just one

lung von Fasern an demselben sowie die Bildung Bewegung tangential zum Zylinder, sondern infolgedevelopment of fibers on the same as well as the formation of movement tangential to the cylinder, but as a result

von Faserballen verhindert oder zumindest verzögert des durch die Führungsmittel gegebenen weiterenof fiber bales prevented or at least delayed the further given by the guide means

werden kann. · Freiheitsgrades außerdem gleichzeitig eine praktischcan be. · Degree of freedom moreover at the same time a practical

Bei bekannten Vorrichtungen dieser Art wird dem 35 radiale Abhebebewegung, weil die Abstreifhülse beiIn known devices of this type, the 35 radial lift-off movement, because the wiper sleeve at

Abstreifer, um ihn wiederholt kurzzeitig vom Zylin- der Reibungsmitnahme durch den Zylinder gegenWiper to repeatedly briefly remove it from the cylinder against the friction entrainment by the cylinder

der abzuheben, eine Schwingungsbewegung erteilt, die durch die beiden Achsen definierte Ebene auf-take off, emit a vibratory movement, the plane defined by the two axes on-

wobei diese Bewegung entweder von einem mit dem läuft.this movement either from one with the runs.

Zylinder umlaufenden nockenförmigen Teil auf den Der Freiheitsgrad für die radiale Auslenkung desCylinder revolving cam-shaped part on the The degree of freedom for the radial deflection of the

Halter des schwenkbar gelagerten Abstreifers über- 4o Abstreifers kann entweder durch entsprechendeHolder of the swivel-mounted scraper over-4o scraper can either by corresponding

tragen wird, oder aber der Abstreifer wird durch Gleitführungen an den Enden des selbst schwingbarwill wear, or else the scraper is swingable by sliding guides at the ends of the self

einen federnd nachgiebigen Halter gegen den Zylin- ausgebildeten Abstreifers gegeben sein, oder aberbe given a resilient holder against the cylinder-shaped scraper, or else

der gedrückt, wobei die Maschinenvibrationen sich der Abstreifer kann an schwenkbar und zugleichthe pressed, whereby the machine vibration itself the scraper can be pivoted and at the same time

auf den Abstreifer übertragen und denselben in verschiebbar gelagerten Armen befestigt sein.transferred to the scraper and attached to the same in slidably mounted arms.

Schwingungen versetzen sollen. 45 Nach einem weiteren Merkmal der ErfindungShould move vibrations. 45 According to a further feature of the invention

Die Erzeugung von Schwingungen durch am Hai- schließt die Ebene durch die Berührungslinie undThe generation of vibrations through the shark closes the plane through the line of contact and

ter des Abstreifers anschlagende umlaufende Nocken die Schwingachse in der Ruhelage des AbstreifersRevolving cams that strike the scraper, the oscillation axis in the rest position of the scraper

zeitigt zwar befriedigende Ergebnisse in der Reini- mit der durch die Zylinderachse und die Schwing-Although it produces satisfactory results in cleaning with the cylinder axis and the

gungswirkung, eine derartige Vorrichtung hat jedoch achse verlaufenden Ebene zweckmäßig einen Winkelsupply effect, such a device, however, has an axis extending plane expediently an angle

-mechanische und spinntechnische Nachteile. Einer- 5» zwischen 10 und 30° ein.-Mechanical and spinning disadvantages. One- 5 »between 10 and 30 ° a.

seits sind nämlich die Nocken und Halter der Ab- Ferner empfiehlt es sich, daß die .Abstreifhülse inon the other hand, namely the cams and holders of the Ab- Furthermore, it is recommended that the .Astrereifhülse in

nutzung ausgesetzt, wobei, sofern die Nocken am an sich bekannter Weise aus einem elastisch defor-exposed to use, provided that the cams are made of an elastically deformed

Zylinder vorgesehen sind, auch dessen Lager in Mit- mierbaren Schlauch besteht. Diese schlauchförmigeCylinders are provided, the bearing of which is also made in Mitmbaren hose. This tubular

leidenschaft gezogen werden. Andererseits wird Abstreifhülse ist an einem ihn in Längsrichtungbe drawn to passion. On the other hand, the wiper sleeve is attached to it in the longitudinal direction

durch diese Maßnahme der Geräuschpegel im 55 durchsetzenden stabförmigen Halter befestigt, derby this measure, the noise level in the 55 penetrating rod-shaped holder is fixed, the

Maschinensaal in unerwünschter Weise erhöht. Die zwischen seinem den Abstreiferschlauch tragendenMachine room increased in an undesirable manner. The one between his carrying the wiper hose

spinntechnischen Nachteile liegen darin, daß infolge Mittelteil und seinen Enden nach Art von Torsions-Spinning disadvantages are that due to the middle part and its ends in the manner of torsion

des Abhebens des Abstreifers immer an der gleichen federn wirkende Elemente aufweist.the lifting of the scraper always has on the same spring-acting elements.

Stelle des Zylinders sich auf dem letzteren eine In der Zeichnung ist eine beispielsweise Ausfüh-Place the cylinder on the latter.

schmale Verschmutzungszone bildet, was sich erfah- 6o rungsform der erfindungsgemäßen Reinigungsvor-Narrow contamination zone forms, which experience form of the cleaning device according to the invention

rungsgemäß auf die Gleichmäßigkeit der Faser- richtung dargestellt. Es zeigtShown according to the uniformity of the fiber direction. It shows

verarbeitung sehr ungünstig auswirkt. F i g. 1 eine perspektivische Darstellung einesprocessing has a very unfavorable effect. F i g. 1 is a perspective view of a

Die andere bekannte Art der Erzeugung der Streckwerkzylinderpaares mit einem dem Oberzylin-The other known way of generating the drafting cylinder pair with one of the upper cylinder

Schwingungen, nämlich durch die Maschinenvibra- der zugeordneten Abstreifer,Vibrations, namely due to the scrapers assigned to the machine vibrators,

tionen, ist in ihrer Reinigungswirkung meist un- 65 F i g. 2 einen Querschnitt entlang der Linie H-IItions, is usually poor in their cleaning effect. 2 shows a cross section along the line H-II

befriedigend, und zwar deshalb, weil die Amplitude in Fig. 1,satisfactory because the amplitude in Fig. 1,

der Schwingung nicht genügend groß ist, um den Ab- Fi g. 3 einen Längsschnitt durch das eine Abstrei-the oscillation is not large enough to make the Ab- Fi g. 3 a longitudinal section through the one scraper

streifer ausreichend abzuheben. Je nach Art und Ab- ferende,strip sufficiently to take off. Depending on the type and dispatcher,

Claims

3 43 4

4 and 5 each have a cross section similar to FIG. 2 30 relative to the upper cylinder R ensures that

and that the scraper 10 with respect to this one

Fig. 6a to 6e the scraper assumes different stelhvinkel α (Fig. 5). The angle of attack α

Movement phases with respect to the cylinder surface. is preferably chosen between 10 and 30 °, each

The scraper designated 10 in FIG. 1 ^: 5 but are also. larger angles of attack possible. the

consists of a rod-shaped body 11, which is in the contact line L of the scraper on the cylinder R

middle area of a stripping sleeve 12 is therefore outside, specifically with respect to the through

flexible material, e.g. B. from a rubber hose, an arrow indicated direction of rotation of the 'cylinder

is surrounded. The wiper sleeve 12 is on the body 11 ders R in front of the plane E, which the cylinder axis X.

by a profiled elongated holder 13 and contains the oscillation axis Y of the scraper 10,

that in turn by means of screws 14 on the body. The mode of operation of the device shown

is held by 11 and the part 12 on the body is as follows: When the cylinder R is in the direction

11 stuck. of the arrow rotated, the wiper sleeve 12 is

As can be seen from FIGS. 4 and 5, the following friction from the surface of the cylinder from the body 11 preferably has an approximately trapezoidal 15 of the rest position (FIG. 6a) entrained and deformed cross-section with a relatively wide base. 15, while the body 11 is in its original position while the top 16 is narrower. The reverse is retained for the time being (Fig. 6b). In the further Mitseite 17 runs approximately at right angles to the base, if the sleeve 12 would now also the body 11 while the front side 18 is inclined inward in its bearing parts 25 against the effect of the. Twenty torsion elements 29 twisted between the base 15 and the front side 18, with the latter forming a rounded nose 19. be tensioned (Fig. 6c). The line of contact L

The body 11 has at both ends it has meanwhile moved through the plane E

a coupling pin 20 (FIG. 2) with a cylindrical change. The twisting of the body 11 causing

Cross-section on which a tapered coaxial force F (Fig. 4) breaks down into the perpendicular

Bearing pin 22 connects (Fig. 3). The surface 25 on the acting components A and B. The com-

of the coupling pin is appropriately split. A acts parallel to the movement path, ie

rough, e.g. B. by a knurl 21. to the direction of the slots 33 and has the lever

According to FIG. 3 is an arm a on the journal 22. On the other hand, the lever arm b acts on-bearing sleeve 25 placed, the z. B. made of nylon or pointing component B under a right winein another material with good sliding properties for this trajectory. The strength was there. The sleeve 25 has a cylindrical sufficient size a displacement of the coupling part 26, which faces the pin 20, streaks in the direction of the path of movement, and a square or rectangular cross-section, the sleeve 12 is provided as a result of their relaxation cut bearing piece 27. Between the resiliently slightly from the surface of the cylinder R parts 26 and 27, a shoulder part 28 is provided. 35 lifted (Fig. 6d). The torsion spring elements on the coupling pin 20 and the coupling part 29 and also the sleeve 12 deform under 26 a connecting these parts with each other the effect of the released energy even until the rubber spring element 29 in the form of a sleeve is pressed a little beyond its original position. Instead of rubber, another elastic sense can also be used (FIG. 6e).

sches material or a metallic torsion spring 40 then allows the acting on the wiper

be used. Preferably, the upper end of gravity is also moving this downwards again.

surface of the part 26 roughened or with longitudinal grooves, so that the sleeve 12 on the surface of the

provided to a relative rotation of the sleeve 29 cylinder R resiliently impacts. This creates a

to prevent part 26. slight impact or tapping action that causes

As shown in FIG. 1, the scraper 10 is falling off at 45 any fiber whiskers that may still be present. The-

its two sides each in a bearing bracket 30 which takes place at very short time intervals

hold, whereby the bearing bracket does not show a process that is perceived by the eye as a vibration

are attached to the machine frame. The men will, allowed, the cylinder surface itself-

Bearing brackets are to be kept completely clean, for example, from angled working, whereby by the

Sheet metal pieces are formed and have a horizontal knocking effect even with relatively strongly adhering fibers

Fastening part 31 and a vertical bearing part 32 or foreign parts are detached,

on. In the bearing part 32 of each bracket there is a slot 33, as can be seen from the foregoing

provided, the slots together forming an arrangement corresponding to the invention

Form a path of movement for the scraper. Into that of the scraper without any other dimension slots grip the bearing pieces 27 of the parts 25 and 55 recorded vibrations or oscillations generated,

are in these in the extension direction of the frequency of the elasticity of the sleeve and

Slides can be moved. In addition, the bearings form the torsion springs and the mass of the scraper

parts 32 side stops for the shoulder parts 28 is dependent.

The lifting of the scraper from the cylinder bend of the scraper relative to the surface to be cleaned 60 takes place several times during an UmZylinder R in the longitudinal direction of the same. rotation of the cylinder R and where preferably

In operation, the scraper is under the influence of the number is not a whole multiple in order to prevent

the force of gravity with the elastic sleeve 12 on the one that the scraper again and again in the same

Surface of the upper cylinder R on; in the process, the circumferential positions of the cylinder impinge on it,

Does the system pressure speak of the radial component 65 ..

its component determined by the slots 33 ^v encryption atentansprucne:

Sliding direction resulting part of the own 1st cleaning device for drafting

weight. By suitable assembly of the bearing bracket cylinder with a cylinder from above

Essentially under the influence of gravity touching, an oscillating movement executing a scraper, whose oscillation axis runs parallel to the cylinder axis and whose elastic scraper sleeve touches the cylinder surface along a line, characterized in that the contact line (L) in the rest position of the scraper (10) in front the plane (E) running through the cylinder axis (X) and the oscillation axis (Y) of the scraper and that the scraper is slidably mounted in bearing brackets (30) provided with slots (33) so that it is slidably mounted in each case as a result of frictional entrainment by the rotating cylinder (R) can be lifted off the cylinder for a short time.

2. Cleaning device according to claim 1, characterized in that the plane through the contact line (L) and the oscillation axis (Y) in the rest position of the scraper (10) with the plane (E) forms an angle (α) between 10 and 30 ° .

3. Cleaning device according to claim!, Characterized characterized in that the stripping sleeve (12) consists of an elastic in a manner known per se deformable hose.

4. Cleaning device according to claim 3, characterized in that the tubular Stripping sleeve (12) attached to a rod-shaped body (11) penetrating it in the longitudinal direction is that between its central region and carrying the tubular part having its ends acting in the manner of torsion springs elements (29).

1 sheet of drawings