EP0994212A1 - Helical shearing blade - Google Patents

Helical shearing blade Download PDF

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Publication number
EP0994212A1
EP0994212A1 EP99120127A EP99120127A EP0994212A1 EP 0994212 A1 EP0994212 A1 EP 0994212A1 EP 99120127 A EP99120127 A EP 99120127A EP 99120127 A EP99120127 A EP 99120127A EP 0994212 A1 EP0994212 A1 EP 0994212A1
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EP
European Patent Office
Prior art keywords
shear
cutting edge
cutting
cut
counter knife
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Granted
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EP99120127A
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German (de)
French (fr)
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EP0994212B1 (en
Inventor
Robert Dr. Ing. Knein-Linz
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Sucker Mueller Hacoba GmbH and Co
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Sucker Mueller Hacoba GmbH and Co
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C13/00—Shearing, clipping or cropping surfaces of textile fabrics; Pile cutting; Trimming seamed edges

Definitions

  • the invention relates to a scissor coil with a blade part for a rotating Shear cylinder, which works with a counter knife to shear fiber pile, the blade part consisting essentially of an upright spiral Band exists, the outer narrow side of which has a cutting edge and where a breast surface adjoins the cutting edge, which with the counter knife has cutting, interacting blows.
  • Shear spirals of this type are described in DE-AS 24 04 837.
  • the two wedge surfaces on the cutting edge of the shear helix each including a cutting angle with the helix axis.
  • the aim is to prevent the fibers from dodging sideways during shear cutting - as is the case with scissors with a serrated cutting edge.
  • the cut of the known scissor helix is essentially designed so that each cut edge of a wedge-shaped cut interacts approximately like a punch with the counter knife. In this way, a uniform fiber pile can only be produced if the amount of fibers fed to the respective wedge or slicing cutting edge is kept relatively small.
  • the transport speeds of the fibrous webs to be sheared, particularly in the case of dense pile, are correspondingly limited. If the transport speed or the (relative) cutting depth is increased above a limit to be determined in the individual case, part of the pile covered between the counter knife and the wedge cutting edge is pushed aside so that uneven shear results are obtained.
  • the term Cutting depth denotes the (average) length of the pile part which is cut off with the individual cut. Relative "cutting depth is the ratio of the length cut to the original (mean) total length of the pile.
  • the invention has for its object to design the cutting edge of the scissor helix so that the transport speed of the fabric to be sheared and / or the Cutting depth, even with dense pile, essential compared to the state of the art can be increased and still maintain an evenly sheared fiber pile becomes.
  • the solution according to the invention exists for the shear helix mentioned at the beginning in that the blows are formed as arcuate recesses in the chest surface are.
  • the depth of the blows should preferably be perpendicular to the chest surface on the order of magnitude at least equal to that measured parallel to the cutting edge Width of the blows.
  • the invention at the same time makes it available for holding fibers standing volume of the individual cut is maximized and the cutting edge is cut open extended almost the entire length of the arcuate slash. Therefore one of the Pile density, cutting depth and the fabric web speed large amount of fibers can be caught in a single cut without the fibers dodge laterally parallel to the cutting edge of the counter knife or - as with a conventionally wedge-shaped described in said DE-AS 24 04 837 Slash - can be pushed into a chisel tip.
  • the arcuate slash volume namely, according to the invention not only offers space for significantly more fibers than the known flat wedges, but it also has no wedge tips in the fibers could dodge. According to the manufacturing mechanics, the arch shape be constructed from a plurality of essentially flat elements.
  • the blows according to the invention can approximately average Stretch into the chest surface in the shape of an arc, ellipse or parabola.
  • the scope of the invention also includes any other arch shape that has a maximum receiving volume guaranteed for fibers and the longest possible cutting edge.
  • an approximately parabolic cross section of the Slash recess, the parabolic axis of which is approximately perpendicular to the cutting edge of the Counter knife stands. If necessary, the parabolic cross sections open approximately symmetrically in the direction of the counter knife cutting edge.
  • the cutting edge of the scissor coil should be designed in this way be that the transport speed of the web to be sheared and / or the cutting depth of the pile - even with dense pile - compared to the state of the Technology can be increased significantly and still a uniformly sheared Flor is obtained.
  • the slashes are arcuate recesses the chest surface of the scissor coil.
  • the depth of the Lashes perpendicular to the chest surface should be at least equal in size the width of the blows measured parallel to the cutting edge of the shear helix become.
  • Fig. 3 part of a scissor coil 3 is enlarged with a cut 13 on the chest surface 14 shown.
  • the shear coil 3 shown consists of the spiral band 15 with cutting edge 6 and foot 16.
  • the chops 13 according to the invention of the chest surface 14 in strong enlargement in one perspective and shown in principle in cross section.
  • the single cut 13 of the shear helix 3 is essentially in Cutting direction 17 moved perpendicular to the cutting edge 12 of the counter knife 7.
  • the shear area shifts in the direction of propagation 18 parallel to Cutting edge 12.
  • the angle ⁇ of the shear helix 3 relative to the cutting edge 12 becomes referred to as spiral pitch.
  • the depth T of the cuts 13 in terms of magnitude at least equal to that parallel to the cutting edge 6 of the Schertoryl 3 measured width B of the cuts 13 are made. Moreover is aimed at the arcuate in cross section (cut perpendicular to the chest surface) Chop 13 to shape or to arrange relative to the counter knife cutting edge 12 or to orientate that as large a part of the cut length as possible interacting with the counter knife 7.
  • the cutout has an approximately parabolic cross-section is selected, the parabola axis (containing the parabola focus) 20 should be approximately perpendicular to the cutting edge 12 of the counter knife 7. - In the Direction of the cutting edge 6 measured width of the webs 21 between two blows 13 is generally approximately zero.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The arc-shaped cuts (13) are located on the breast plane of the coil (3) which adjoins the cutter on the narrow coil side. The depth of the cuts (13) measured vertically to the breast plane is at least as great as the width of the cuts (13) measured in parallel to the coil cutter.

Description

Die Erfindung betrifft eine Scherwendel mit einem Klingenteil für einen umlaufenden Scherzylinder, der zum Scheren von Faserflor mit einem Gegenmesser zusammenarbeitet, wobei das Klingenteil im wesentlichen aus einem hochkant gewendelten Band besteht, dessen außen liegende Schmalseite eine Schneide aufweist und wobei an die Schneide eine Brustfläche angrenzt, welche mit dem Gegenmesser schneidend zusammenwirkende Hiebe besitzt.The invention relates to a scissor coil with a blade part for a rotating Shear cylinder, which works with a counter knife to shear fiber pile, the blade part consisting essentially of an upright spiral Band exists, the outer narrow side of which has a cutting edge and where a breast surface adjoins the cutting edge, which with the counter knife has cutting, interacting blows.

Scherspiralen dieser Art werden beschrieben in DE-AS 24 04 837. Im Bekannten werden keilförmige Hiebe beschrieben, deren je zwei Keilflächen an der Schneide der Scherwendel mit der Wendelachse je einen Hiebwinkel einschließen. Es wird angestrebt, ein seitliches Ausweichen der Fasern beim Scherschnitt - etwa wie bei einer Schere mit gezackter Schneidkante - zu verhindern. Um ein Gleiten der Fasern beim Schneiden zu vermeiden bzw. höchstens ein dosiertes Gleiten zuzulassen, wird der Hieb der bekannten Scherwendel im wesentlichen so ausgebildet, daß jeweils eine Hiebkante eines keilförmigen Hiebs annähernd wie eine Stanze mit dem Gegenmesser zusammenwirkt. Auf diese Weise läßt sich ein gleichmäßiger Faserflor nur erzeugen, wenn die Menge der der jeweiligen Keil- bzw. Hiebschneidkante zugeführten Fasern relativ klein gehalten wird. Die Transportgeschwindigkeiten der zu scherenden Faserflorbahnen, insbesondere bei dichtem Flor, sind entsprechend beschränkt. Erhöht man die Transportgeschwindigkeit bzw. die (relative) Schneidtiefe über eine im Einzelfall zu ermittelnde Grenze, wird ein Teil des zwischen Gegenmesser und Keilschneidkante erfaßten Flors zur Seite gedrängt, so daß sich ungleichmäßige Scherergebnisse einstellen. Der Begriff

Figure 00020001
Schneidtiefe" bezeichnet die (mittlere) Länge des Florteils, der mit dem einzelnen Schnitt abgetrennt wird. Relative" Schneidtiefe ist das Verhältnis der abgetrennten Länge zur ursprünglichen (mittleren) Gesamtlänge des Flors.Shear spirals of this type are described in DE-AS 24 04 837. In the known, wedge-shaped blows are described, the two wedge surfaces on the cutting edge of the shear helix each including a cutting angle with the helix axis. The aim is to prevent the fibers from dodging sideways during shear cutting - as is the case with scissors with a serrated cutting edge. In order to avoid sliding of the fibers during cutting or at most to allow a dosed sliding, the cut of the known scissor helix is essentially designed so that each cut edge of a wedge-shaped cut interacts approximately like a punch with the counter knife. In this way, a uniform fiber pile can only be produced if the amount of fibers fed to the respective wedge or slicing cutting edge is kept relatively small. The transport speeds of the fibrous webs to be sheared, particularly in the case of dense pile, are correspondingly limited. If the transport speed or the (relative) cutting depth is increased above a limit to be determined in the individual case, part of the pile covered between the counter knife and the wedge cutting edge is pushed aside so that uneven shear results are obtained. The term
Figure 00020001
Cutting depth "denotes the (average) length of the pile part which is cut off with the individual cut. Relative "cutting depth is the ratio of the length cut to the original (mean) total length of the pile.

Der Erfindung liegt die Aufgabe zugrunde, die Schneide der Scherwendel so auszubilden, daß die Transportgeschwindigkeit der zu scherenden Stoffbahn und/oder die Schneidtiefe, auch bei dichtem Flor, gegenüber dem Stand der Technik wesentlich erhöht werden kann und trotzdem ein gleichmäßig geschorener Faserflor erhalten wird.The invention has for its object to design the cutting edge of the scissor helix so that the transport speed of the fabric to be sheared and / or the Cutting depth, even with dense pile, essential compared to the state of the art can be increased and still maintain an evenly sheared fiber pile becomes.

Die erfindungsgemäße Lösung besteht für die eingangs genannte Scherwendel darin, daß die Hiebe als bogenförmige Ausnehmungen der Brustfläche ausgebildet sind. Vorzugsweise soll die Tiefe der Hiebe senkrecht zu der Brustfläche größenordnungsmäßig mindestens gleich der parallel zu der Schneide gemessenen Breite der Hiebe sein.The solution according to the invention exists for the shear helix mentioned at the beginning in that the blows are formed as arcuate recesses in the chest surface are. The depth of the blows should preferably be perpendicular to the chest surface on the order of magnitude at least equal to that measured parallel to the cutting edge Width of the blows.

Durch die Erfindung werden zugleich das zur Aufnahme von Fasern zur Verfügung stehende Volumen des einzelnen Hiebs maximiert und die Hiebschneidkante auf fast die ganze Länge des bogenförmigen Hiebs ausgedehnt. Daher kann eine der Flordichte, Schneidtiefe und der Stoffbahntransportgeschwindigkeit entsprechend große Fasermenge im einzelnen Hieb aufgefangen werden, ohne daß die Fasern seitlich parallel zur Schneidkante des Gegenmessers ausweichen oder - wie bei einem in der genannten DE-AS 24 04 837 beschriebenen, herkömmlich keilförmigen Hieb - in eine Keilspitze abgedrängt werden können. Das bogenförmige Hiebvolumen nach der Erfindung bietet nämlich nicht nur Platz für wesentlich mehr Fasern als die bekannten flachen Keile, sondern es hat auch keine Keilspitzen, in die Fasern ausweichen könnten. Der Herstellungsmechanik entsprechend kann die Bogenform aus einer Vielzahl von im wesentlichen ebenen Elementen aufgebaut sein. The invention at the same time makes it available for holding fibers standing volume of the individual cut is maximized and the cutting edge is cut open extended almost the entire length of the arcuate slash. Therefore one of the Pile density, cutting depth and the fabric web speed large amount of fibers can be caught in a single cut without the fibers dodge laterally parallel to the cutting edge of the counter knife or - as with a conventionally wedge-shaped described in said DE-AS 24 04 837 Slash - can be pushed into a chisel tip. The arcuate slash volume namely, according to the invention not only offers space for significantly more fibers than the known flat wedges, but it also has no wedge tips in the fibers could dodge. According to the manufacturing mechanics, the arch shape be constructed from a plurality of essentially flat elements.

Gemäß weiterer Erfindung können sich die erfindungsgemäßen Hiebe im Mittel etwa kreisbogen-, ellipsen- oder parabelförmig in die Brustfläche hineinerstrecken. Im Rahmen der Erfindung liegt auch jede andere Bogenform, die ein maximales Aufnahmevolumen für Fasern und eine möglichst lange Schneidkante garantiert. In diesem Sinne besonders bevorzugt wird ein etwa parabelförmiger Querschnitt der Hiebausnehmung, dessen Parabelachse etwa senkrecht zu der Schneidkante des Gegenmessers steht. Gegebenenfalls sollen sich die parabelförmigen Querschnitte etwa symmetrisch in Richtung der Gegenmesserschneidkante öffnen. Wenn die Schneide der Scherwendel um den Winkel α der Wendelsteigung gegen die Schneidkante des Gegenmessers geneigt ist, steht dann die Parabelachse mit dem Winkel 90°-α schräg zur Scherwendelschneide. Im allgemeinen werden die Hiebe als zueinander parallele Nuten in die Brustfläche eingebracht. Beim Nachschleifen der Schermesser bleibt dann die Keilform unverändert erhalten.According to a further invention, the blows according to the invention can approximately average Stretch into the chest surface in the shape of an arc, ellipse or parabola. in the The scope of the invention also includes any other arch shape that has a maximum receiving volume guaranteed for fibers and the longest possible cutting edge. In In this sense, an approximately parabolic cross section of the Slash recess, the parabolic axis of which is approximately perpendicular to the cutting edge of the Counter knife stands. If necessary, the parabolic cross sections open approximately symmetrically in the direction of the counter knife cutting edge. If the Cut the shear helix against the angle α of the helix pitch Cutting edge of the counter knife is inclined, the parabolic axis then stands with the Angle 90 ° -α at an angle to the shear helix. Generally the blows introduced as parallel grooves in the chest surface. When regrinding the shear knife then retains the wedge shape unchanged.

Es wird eine Scherwendel für den Scherzylinder einer Schermaschine zum Scheren einer Stoffbahn beschrieben. Die Schneide der Scherwendel soll so ausgebildet werden, daß die Transportgeschwindigkeit der zu scherenden Stoffbahn und/oder die Schneidtiefe des Flors - auch bei dichtem Flor - gegenüber dem Stand der Technik wesentlich erhöht werden kann und trotzdem ein gleichmäßig geschorener Flor erhalten wird. Erfindungsgemäß werden die Hiebe als bogenförmige Ausnehmungen der Brustfläche der Scherwendel ausgebildet. Bevorzugt soll die Tiefe der Hiebe senkrecht zu der Brustfläche soll größenordnungsmäßig mindestens gleich der parallel zur Schneide der Scherwendel gemessenen Breite der Hiebe gemacht werden.It becomes a shear helix for the shear cylinder of a shearing machine for shearing described a fabric. The cutting edge of the scissor coil should be designed in this way be that the transport speed of the web to be sheared and / or the cutting depth of the pile - even with dense pile - compared to the state of the Technology can be increased significantly and still a uniformly sheared Flor is obtained. According to the slashes are arcuate recesses the chest surface of the scissor coil. Preferably, the depth of the Lashes perpendicular to the chest surface should be at least equal in size the width of the blows measured parallel to the cutting edge of the shear helix become.

Anhand der schematischen Zeichnung von Ausführungsbeispielen werden einige Einzelheiten der Erfindung erläutert. Es zeigen:

Fig. 1
einen Scherzylinder mit mehreren Scherwendeln;
Fig. 2
einen Schnitt durch einen Scherzylinder mit Darstellung des Gegenmessers, des Schertisches und der über den Schertisch geführten Stoffbahn;
Fig. 3
in vergrößertem Maßstab einen Abschnitt einer Scherwendel mit Hiebbrustfläche;
Fig. 4
eine perspektivische Darstellung einer erfindungsgemäßen Hiebbrustfläche; und
Fig. 5
einen stark vergrößerten Schnitt längs der Linie V-V von Fig. 2.
Some details of the invention are explained on the basis of the schematic drawing of exemplary embodiments. Show it:
Fig. 1
a shear cylinder with several shear helices;
Fig. 2
a section through a shear cylinder with representation of the counter knife, the shear table and the fabric web guided over the shear table;
Fig. 3
on a larger scale a section of a scissor coil with a cutting face;
Fig. 4
a perspective view of a cutting breast surface according to the invention; and
Fig. 5
a greatly enlarged section along the line VV of Fig. 2nd

Nach Fig. 1 werden auf der Achse 1 des insgesamt mit 2 bezeichneten Scherzylinders Schermesser bzw. Scherwendel 3 befestigt. Als Befestigung dienen im allgemeinen an den Längsenden des Zylinders vorgesehene Aufnahmeplatten 4, welche Arretiermittel, z.B. Bohrungen, aufweisen. In Fig. 2 wird angenommen, daß der (nur zum Teil dargestellte) Scherzylinder 2 bei Betrieb in Drehrichtung 5 rotiert. Die Schneide 6 der Scherwendel 3 soll mit einem feststehenden Gegenmesser 7 zusammenarbeiten. Eine Stoffbahn 8, deren Flor 9 zu scheren ist, wird in Transportrichtung 10 über einen Schertisch 11 in den Schneidbereich, das heißt an die Schneidkante 12 des Gegenmessers 7 herangebracht. Dort wird der Flor 9, wie in Fig. 2 dargestellt, durch die Bewegung in Transportrichtung 10 einerseits und durch die Rotation des Scherzylinders 2 in Drehrichtung 5 andererseits mit dem einzelnen Schermesser an die Schneidkante 12 herangebracht und abgetrennt.1 are on the axis 1 of the overall designated 2 shear cylinder Shear knife or shear helix 3 attached. Generally serve as an attachment on the longitudinal ends of the cylinder provided mounting plates 4, which Locking means, e.g. Have holes. In Fig. 2 it is assumed that the (only partly shown) shear cylinder 2 rotates in the direction of rotation 5 during operation. The Cutting edge 6 of the shear helix 3 is intended to work with a fixed counter knife 7. A fabric web 8, the pile 9 is to be sheared, is in the transport direction 10 over a shear table 11 in the cutting area, that is to the Cutting edge 12 of the counter knife 7 brought up. There the Flor 9, as in Fig. 2 shown, on the one hand and by the movement in the transport direction 10 the rotation of the shear cylinder 2 in the direction of rotation 5 on the other hand with the individual Shear knife brought up to the cutting edge 12 and separated.

In Fig. 3 wird ein Teil einer Scherwendel 3 vergrößert mit Hieb 13 auf der Brustfläche 14 dargestellt. Die gezeichnete Scherwendel 3 besteht aus dem Wendelband 15 mit Schneide 6 und Fuß 16.In Fig. 3, part of a scissor coil 3 is enlarged with a cut 13 on the chest surface 14 shown. The shear coil 3 shown consists of the spiral band 15 with cutting edge 6 and foot 16.

In den Fig. 4 und 5 werden die erfindungsgemäßen Hiebe 13 der Brustfläche 14 in starker Vergrößerung in einer Perspektive und im Querschnitt im Prinzip dargestellt. Bei der Scherarbeit wird der einzelne Hieb 13 der Scherwendel 3 im wesentlichen in Schneidrichtung 17 senkrecht zur Schneidkante 12 des Gegenmessers 7 bewegt. Der Scherbereich verschiebt sich dabei in Fortplanzungsrichtung 18 parallel zur Schneidkante 12. Der Winkel α der Scherwendel 3 relativ zur Schneidkante 12 wird als Wendelsteigung bezeichnet.4 and 5, the chops 13 according to the invention of the chest surface 14 in strong enlargement in one perspective and shown in principle in cross section. During the shearing work, the single cut 13 of the shear helix 3 is essentially in Cutting direction 17 moved perpendicular to the cutting edge 12 of the counter knife 7. The shear area shifts in the direction of propagation 18 parallel to Cutting edge 12. The angle α of the shear helix 3 relative to the cutting edge 12 becomes referred to as spiral pitch.

Durch in Fig. 4 und 5 im Prinzip dargestellte Hohlbogen-Form der Hiebe wird erreicht, daß sich im Hiebvolumen eine große Menge von Fasern 19 sammeln können, ohne daß die Gefahr besteht, daß die Fasern in der Fortpflanzungsrichtung 18 des momentanen Schneidbereichs längs der Schneidkante 12 ausweichen können. Die in dem Hohlbogen-Hieb 13 eingefangenen Fasern 19 können, wie sich aus der Schnittdarstellung nach Fig. 5 deutlich ergibt, sogar auf dem größten Teil der den Hiebquerschnitt aufspannenden Bogenlinie geschnitten werden. Dadurch wird die Leistungsfähigkeit des jeweiligen Scherzylinders sowohl betreffend die Schneidtiefe und/oder Stoffbahntransportgeschwindigkeit als auch betreffend die Dichte des Flors 9 gegenüber dem Stand der Technik wesentlich erhöht.By means of the hollow arch shape of the blows shown in principle in FIGS. 4 and 5, that a large amount of fibers 19 can collect in the cut volume, without the risk that the fibers in the direction of propagation 18th can dodge the current cutting area along the cutting edge 12. The fibers 19 trapped in the hollow arc cut 13 can, as can be seen from the 5 clearly shows, even on most of the Cut cross-section arc line. This will make the Performance of the respective shear cylinder both regarding the cutting depth and / or fabric web speed as well as regarding the density of the Flors 9 significantly increased compared to the prior art.

Vorzugsweise soll die Tiefe T der Hiebe 13 (gemessen senkrecht zur Brustfläche 14) größenordnungsmäßig mindestens gleich der parallel zur Schneide 6 der Scherwendel 3 gemessenen Breite B der Hiebe 13 gemacht werden. Außerdem wird angestrebt den im Querschnitt (geschnitten senkrecht zur Brustfläche) bogenförmigen Hieb 13 so zu formen bzw. relativ zur Gegenmesserschneidkante 12 anzuordnen bzw. zu orientieren, daß ein möglichst großer Teil der Hiebbogenlänge schneidend mit dem Gegenmesser 7 zusammenwirkt. Eine in diesem Sinne günstige Lösung ergibt sich, wenn ein etwa parabelförmiger Querschnitt der Hiebausnehmung gewählt wird, wobei die (den Parabelbrennpunkt enthaltende) Parabelachse 20 etwa senkrecht zur Schneidkante 12 des Gegenmessers 7 stehen soll. - Die in Richtung der Schneide 6 gemessene Breite der Stege 21 zwischen je zwei Hieben 13 hat im allgemeinen annähernd den Wert Null.Preferably, the depth T of the cuts 13 (measured perpendicular to the chest surface 14) in terms of magnitude at least equal to that parallel to the cutting edge 6 of the Scherwendel 3 measured width B of the cuts 13 are made. Moreover is aimed at the arcuate in cross section (cut perpendicular to the chest surface) Chop 13 to shape or to arrange relative to the counter knife cutting edge 12 or to orientate that as large a part of the cut length as possible interacting with the counter knife 7. A favorable in this sense The solution is obtained if the cutout has an approximately parabolic cross-section is selected, the parabola axis (containing the parabola focus) 20 should be approximately perpendicular to the cutting edge 12 of the counter knife 7. - In the Direction of the cutting edge 6 measured width of the webs 21 between two blows 13 is generally approximately zero.

BezugszeichenlisteReference list

11
= Achse= Axis
22nd
= Scherzylinder= Shear cylinder
33rd
= Scherwendel= Scherwendel
44th
= Aufnahmeplatte= Mounting plate
55
= Drehrichtung= Direction of rotation
66
= Schneide= Cutting edge
77
= Gegenmesser= Counter knife
88th
= Stoffbahn= Fabric
99
= Flor = Pile
1010th
= Transportrichtung= Direction of transport
1111
= Schertisch= Shear table
1212th
= Schneidkante= Cutting edge
1313
= Hieb= Blow
1414
= Brustfläche= Chest surface
1515
= Wendelband= Spiral band
1616
= Fuß= Foot
1717th
= Schneidrichtung= Cutting direction
1818th
= Fortpflanzungsrichtung= Direction of reproduction
1919th
= Fasern= Fibers
2020th
= Parabelachse= Parabola axis
2121
= Steg= Bridge
αα
= Wendelsteigung= Spiral pitch
TT
= Tiefe des Hiebs= Depth of cut
BB
= Breite des Hiebs= Width of the cut

Claims (6)

Scherwendel (3) mit einem Klingenteil für einen umlaufenden Scherzylinder (2) der zum Scheren von Faserflor (8) mit einem Gegenmesser (7) zusammenarbeitet, wobei das Klingenteil im wesentlichen aus einem hochkant gewendelten Band (15) besteht, dessen außen liegende Schmalseite eine Schneide (6) aufweist, und wobei an die Schneide (6) eine Brustfläche (14) angrenzt, welche mit dem Gegenmesser (7) schneidend zusammenwirkende Hiebe (13) besitzt, dadurch gekennzeichnet, daß die Hiebe (13) als bogenförmige Ausnehmungen der Brustfläche (14) ausgebildet sind.Scherwendel (3) with a blade part for a circumferential shear cylinder (2) which works to shear fiber pile (8) with a counter knife (7), the blade part consisting essentially of an upright spiral band (15), the outer narrow side of which Has cutting edge (6), and with a cutting edge (6) adjoining a breast surface (14) which has cuts (13) which interact with the counter-knife (7), characterized in that the cuts (13) as arcuate recesses of the breast surface (14) are formed. Scherwendel nach Anspruch 1, dadurch gekennzeichnet, daß die Tiefe (T) der Hiebe (13) senkrecht zu der Brustfläche (14) größenordnungsmäßig mindestens gleich der parallel zu der Schneide (6) gemessenen Breite (B) der Hiebe (13) ist.A scraper helix according to claim 1, characterized in that the depth (T) of the blows (13) perpendicular to the chest surface (14) is of the order of magnitude at least equal to the width (B) of the blows (13) measured parallel to the cutting edge (6). Scherwendel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Querschnitt der bogenförmigen Ausnehmung im Sinne einer Optimierung von Faser-Aufnahmevolumen und Schneidlänge des einzelnen Hiebs (13) ausgewählt ist.Shear helix according to claim 1 or 2, characterized in that the cross section of the arcuate recess is selected in order to optimize the fiber absorption volume and cutting length of the individual cut (13). Scherwendel nach mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Hiebausnehmung etwa symmetrisch in Bezug auf die Schneidkante (12) des Gegenmessers (7) geöffnet ist.Shear helix according to at least one of Claims 1 to 3, characterized in that the cutout is opened approximately symmetrically with respect to the cutting edge (12) of the counter knife (7). Scherwendel nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein etwa parabelförmiger Querschnitt der Hiebausnehmung vorgesehen ist, wobei die Parabelachse (20) etwa senkrecht zu der Schneidkante (12) des Gegenmessers (7) steht.A scraper helix according to at least one of claims 1 to 4, characterized in that an approximately parabolic cross section of the cutting recess is provided, the parabolic axis (20) being approximately perpendicular to the cutting edge (12) of the counter knife (7). Scherwendel nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein kreisbogen- oder ellipsenförmiger Querschnitt der bogenförmigen Ausnehmung des Hiebs (13) vorgesehen ist.Shear helix according to at least one of claims 1 to 4, characterized in that an arcuate or elliptical cross section of the arcuate recess of the cut (13) is provided.
EP99120127A 1998-10-12 1999-10-08 Helical shearing blade Expired - Lifetime EP0994212B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19846575A DE19846575C1 (en) 1998-10-12 1998-10-12 Scherwendel
DE19846575 1998-10-12

Publications (2)

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EP0994212A1 true EP0994212A1 (en) 2000-04-19
EP0994212B1 EP0994212B1 (en) 2003-04-02

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ID=7883946

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Application Number Title Priority Date Filing Date
EP99120127A Expired - Lifetime EP0994212B1 (en) 1998-10-12 1999-10-08 Helical shearing blade

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EP (1) EP0994212B1 (en)
DE (2) DE19846575C1 (en)
ES (1) ES2196694T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3705247A1 (en) * 2019-03-07 2020-09-09 Zahoransky AG Shearing device and brush manufacturing machine with shearing device and use of a shearing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019004173B4 (en) * 2019-06-14 2023-02-16 J. Schlenter Production GmbH Clipping spiral with variable stroke distribution

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191412589A (en) * 1914-05-22 1915-08-05 Tomlinson Haas Ltd Cloth or Fabric Cropping or Shearing Machine.
GB722641A (en) * 1953-11-16 1955-01-26 Neill James & Co Sheffield Ltd Improvements in pile wire blades for pile fabric iooms
DE2404837A1 (en) * 1974-02-01 1975-08-07 Severin Fa Heusch SPIRAL SHEAR KNIFE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191412589A (en) * 1914-05-22 1915-08-05 Tomlinson Haas Ltd Cloth or Fabric Cropping or Shearing Machine.
GB722641A (en) * 1953-11-16 1955-01-26 Neill James & Co Sheffield Ltd Improvements in pile wire blades for pile fabric iooms
DE2404837A1 (en) * 1974-02-01 1975-08-07 Severin Fa Heusch SPIRAL SHEAR KNIFE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3705247A1 (en) * 2019-03-07 2020-09-09 Zahoransky AG Shearing device and brush manufacturing machine with shearing device and use of a shearing device

Also Published As

Publication number Publication date
ES2196694T3 (en) 2003-12-16
DE19846575C1 (en) 2000-04-27
EP0994212B1 (en) 2003-04-02
DE59904821D1 (en) 2003-05-08

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