EP1518810B1 - Yarn brake and textile machine and yarn feeding device equipped with such a yarn brake - Google Patents
Yarn brake and textile machine and yarn feeding device equipped with such a yarn brake Download PDFInfo
- Publication number
- EP1518810B1 EP1518810B1 EP04020717A EP04020717A EP1518810B1 EP 1518810 B1 EP1518810 B1 EP 1518810B1 EP 04020717 A EP04020717 A EP 04020717A EP 04020717 A EP04020717 A EP 04020717A EP 1518810 B1 EP1518810 B1 EP 1518810B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- bearing
- thread
- brake
- thread brake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004753 textile Substances 0.000 title claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000009940 knitting Methods 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/38—Devices for supplying, feeding, or guiding threads to needles
- D04B15/48—Thread-feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/20—Co-operating surfaces mounted for relative movement
- B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
- B65H59/225—Tension discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/53—Auxiliary process performed during handling process for acting on performance of handling machine
- B65H2301/531—Cleaning parts of handling machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the invention relates to a yarn brake of the type specified in the preamble of claim 1 and thus equipped textile machines and yarn feeding devices.
- the rotatable mounting of the brake elements and / or the entire assembly serves the purpose of using the tangential forces exerted on the brake elements during running threads to cause the brake elements in a rotational movement and thereby cause a constant self-cleaning of the brake elements, especially if the walls preferably are provided with sufficiently large openings.
- the thread brakes used in practice therefore contain at least in circular knitting machines mostly biasing mechanisms, which are provided with open, no protective covers having springs, so that they must be cleaned in spite of the existing in principle tendency for self-cleaning in relatively short time intervals, resulting in a thread processing or consuming machine with a plurality of thread guides, z. B. a circular knitting machine with 96 or more systems, consuming cleaning work with appropriate machine downtime required.
- the invention has the advantage that the provided with a conventional spring, for adjusting the braking force certain biasing mechanism is not assigned to the brake elements bearing bearing portion, but mounted in a mounting bracket portion of a bearing pin.
- This makes it possible to accommodate the spring in a setting and protection body, which serves on the one hand for mounting the bearing pin on the holder and for adjusting the braking force and on the other hand largely covers the spring to the outside.
- the braking elements are only under the action of a mounted on the bearing portion of the bearing pin pressure element, which can be provided as the brake elements themselves with smooth and only slightly prone to contamination surfaces.
- yarn feeding device comprises a carrier 1, the one with one end to a mounting rail 2 of a thread processing or thread-consuming textile machine, z. B. a circular knitting machine, is detachably fastened.
- a conventional storage or delivery drum 3 is arranged, which is rotatably mounted about a rotation axis 4 and fixedly connected to a rotatably mounted in the carrier 1 shaft 5 for this purpose.
- Driven and z. B. by means of a manually switchable clutch 6a rotatably connected to the shaft 5, thereby driving the storage or delivery drum 3.
- a yarn brake 7 and arranged above this yarn eyelet 8 are attached.
- On the underside of the carrier 1 is arranged between the yarn brake 7 and the delivery drum 3 thread inlet guide element 9, z.
- a thread 12 is from a supply spool, not shown, through the eyelet 8, the yarn brake 7 and the guide element 9 obliquely from above and substantially tangentially to the thread support surface led the delivery drum 3, wound on this in at least one, preferably several turns and finally unwound substantially tangentially and od through the two guide elements 10 and 11 a processing point of a knitting machine.
- the like Not shown.
- Feeler 14 and 15, which are also mounted on the carrier 1, can serve in the usual way for monitoring the thread 12.
- Thread delivery devices of this type are generally known to the person skilled in the art (eg DE 197 20 795 A1 ) and therefore need not be explained in detail.
- the holding element 16 carries a holder 17 with a cylindrical receptacle 18 which is provided with an internal thread 19.
- the receptacle 18 in the embodiment of a hollow cylindrical or sleeve-shaped adjustment and protection body 20 is arranged, which is provided on its jacket with an external thread 21 which fits into the internal thread 19 of the holder 17.
- the adjustment and protection body 20 can therefore be screwed into the receptacle 18 and in this by back and forth turning axially, ie parallel to a longitudinal axis 22 of the bracket 17 back and forth.
- the mounting portion 24 has an outer cross section which is smaller than the inner cross section of the cavity 23, and is located at one in 3 and 4 right, from the adjustment and protection body 20 outstanding side with a bearing portion 26 of the bearing pin 25 coaxially connected.
- the bearing pin 25 and the adjustment and protection body 20 parallel to the longitudinal axis 22 on the one hand has the Adjustment and protection body 20 on a bearing portion 26 facing in 3 and 4 right side an end wall 27 which has a coaxial bearing opening for the mounting portion 24, the inner diameter is only slightly larger than the outer diameter of the mounting portion 24 and thereby forms an annular circumferential, radially inwardly projecting shoulder.
- the mounting portion 24 at a distance from the bearing portion 26, in 3 and 4 left side a radially outwardly extending, preferably annular projection 28 which is provided with an outer cross-section which substantially corresponds to the inner cross section of the cavity 23, which preferably has the same cross section in the direction of the longitudinal axis 22.
- the mounting portion 24 is therefore mounted by means of the end wall or shoulder 27 and the projection 28 in the direction of the longitudinal axis 22 slidably in the adjustment and protection body 20.
- the projection 28 is formed in the embodiment as an integrally formed on the mounting portion 24 bead.
- the mounting portion 24 and with it the whole bearing pin 25 are biased by a trained in the embodiment as a helical compression spring spring 29 in the direction of the longitudinal axis 22 and in the direction opposite to the bearing portion 26 side.
- the spring 29 is to coaxially drawn on the mounting portion 24, disposed in the remaining between this and the wall of the adjustment and protection body 20 part of the cavity 23 and with its ends between the projection 28 and the shoulder 27 or another shoulder of the Adjusting and protecting body 20 supported that they the bearing pin 25 in 3 and 4 tried to press to the left.
- the biasing force depends on the axial position of the adjustment and protection body 20 or on whether it is relatively deeply screwed into the receptacle 18 ( Fig.
- a scale cooperating with a marking on the holder 17 can be provided on the outer jacket of the adjustment and protection body 20
- a preferably cylindrical bearing sleeve 31 is mounted in the embodiment, preferably made of a wear-resistant, a low friction material having such. As ceramic or a suitable plastic.
- the bearing sleeve 31 has an inner diameter which is slightly larger than the outer diameter of the bearing portion 26.
- the bracket 17 is expediently provided on a side facing the bearing portion 26 with a preferably cylindrical bearing ring 32 for the bearing sleeve 31, whose inner diameter is slightly larger than the outer diameter of the bearing sleeve 31.
- the bearing sleeve 31 is preferably arranged easily rotatable by a suitable clearance of a few tenths of a millimeter both on the bearing portion 26 and in the bearing ring 32.
- the bearing sleeve 31 may also be arranged movably on the bearing section 26.
- it preferably extends only to a protruding into the receptacle 18 of the holder 17 shoulder 17a, which also serves as a stop for the adjustment and protection body 20 in its maximum screwed into the receptacle 18 position.
- a first brake element 33 and a second brake element 34 of the yarn brake according to the invention are mounted on an outside of the bracket 17, ie in 3 and 4 To the right of this lying part of the projected by the bearing portion 26 bearing sleeve 31, a first brake element 33 and a second brake element 34 of the yarn brake according to the invention are mounted.
- the two brake elements 33, 34 have a substantially circular outer cross-section and are provided in their center with a respective hub 35, 36, which is preferably rotatably and axially displaceably mounted on the bearing sleeve 31 with little play.
- the hub 35 of the first, the bracket 17 facing the brake member 33 has an axially inner sliding surface 37, which lays in the mounted state of the yarn brake 7 to an end face of the bearing ring 32.
- the hub 36 of the second brake member 34 is disposed at an axial distance from the hub 35 and with an axially outwardly, ie in 3 and 4 provided to the right-facing sliding surface 38 to which a pressing element 39 lays in the mounted state.
- this pressing element 39 is a component which, on the one hand, increases the cross section of the bearing section 26 and on the other hand designed as a closure cap, which is attached to the remote from the mounting portion 24 end of the bearing portion 26 and preferably by a grub screw 40 od. Like. Solder is connected to this.
- the pressing member 39 is also biased to the left, so that it lays with a frontal sliding surface against the sliding surface 38 of the hub 36 of the second brake element 34 and this therefore with a force that depends on the axial adjustment of the adjustment and protection body 20 , axially against the first brake element 33 presses, which in turn rests with its sliding surface 37 on the bearing ring 32 of the bracket 17.
- the braking force exerted by the brake elements 33, 34 on the guided between them, in 3 and 4 schematically indicated thread 12 is exercised, it can by turning the adjustment and protection body 20 and its axial displacement caused thereby z. B. in the off 3 and 4 apparent limits are set.
- the thread 12 exerts a torque on the brake elements 33, 34.
- the outer diameter of the bearing sleeve 31 the sizes of the sliding surfaces 37 and 38 and the sizes and diameters of the interacting with these surfaces on the bearing ring 32 and the pressure element 39 also the brake elements 33, 34 in turns offset to effect a self-cleaning in a conventional manner.
- a particular advantage of the invention results from the fact that the brake elements 33 and 34, the holder 17 with the bearing ring 32 and the pressure element 39 all can be provided with smooth surfaces that are not prone to fouling by lint, dust od.
- a particularly significant advantage of the yarn brake described is, finally, that the spring 29 used to adjust the braking force outside the range of the brake elements 33, 34 and is almost completely covered by the adjustment and protection body 20 and the projection 28 to the outside.
- penetration of dust and dirt into the spaces between the individual turns of the spring 29 is extremely unlikely, so that the braking force once set remains unchanged over a long service life.
- the braking force can be adjusted easily reproducible.
- access to the brake elements 33, 34 is in no way hindered, which also promotes a possible self-cleaning.
- Fig. 5 is different from that Fig. 2 to 4 essentially only in that the bearing sleeve 31 has been omitted and another bearing pin 42 is provided. The same parts are therefore provided with the same reference numerals.
- the bearing pin 42 has a mounting section 43 which is arranged in the adjustment and protection body 20 and has a smaller outer diameter than a bearing section 44 of the bearing pin 42 projecting from the mounting 17 and expediently mounted in the bearing ring 32.
- the hubs 35, 36 of the brake elements 33, 34 are directly and preferably rotatably mounted on the bearing portion 44, wherein with regard to the optimization of the cooperating sliding or friction surfaces and the smooth axial displacement of the brake elements 33, 34 the same as in the embodiment according to Fig. 2 to 4 applies.
- Fig. 5 is the particular to rest on the second brake element 34, the cross-section of the bearing portion 44 enlarging, a pressing member 45 forming member formed on the remote from the mounting portion 43 end of the bearing portion 44 and with this z. B. made in one piece.
- certain projection 46 is formed as a releasably attached to the free end of the mounting portion 43 cap. The attachment of this cap takes place for example by a formed in the mounting portion 43 annular groove 47 and a latching in this, from the cap radially inwardly projecting annular bead 48.
- the assembly is therefore carried out in this embodiment from the right, by the first bearing pin 42 through the hubs 35th and 36, the bearing ring 32 and the adjustment and protection body 20 inserted, then inserted from the left, the spring 29 and finally the cap 46 is pressed onto the mounting portion 43.
- the bearing sleeve 31 could be firmly connected to the mounting portion 26 or fixed to the bracket 17.
- the brake elements 33, 34 could rotate on the bearing sleeve Be arranged 31 or the mounting portion 44, if it can be waived self-cleaning or should.
- the bearing pin could in particular in the case of Fig. 5 be formed in two parts and have a subsequently fixedly connected to the mounting portion 43 bearing portion 44, wherein other than the illustrated cross-sectional shapes are possible.
- the adjustment and protection body 20 axially displaceable, but non-rotatably in the receptacle 18 of the holder 17 and assign him, for example, a locking screw for fixing a desired axial position.
- the spring 29 could be formed differently than shown.
- the yarn brake 7 according to the invention contrary Fig. 1 can also be applied independently of a yarn feeding device and, for example, by means of the holding member 16 can be attached directly to a textile machine.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
- Braking Arrangements (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Unwinding Of Filamentary Materials (AREA)
Abstract
Description
Die Erfindung betrifft eine Fadenbremse der im Oberbegriff des Anspruchs 1 angegebenen Gattung und damit ausgerüstete Textilmaschinen und Fadenliefervorrichtungen.The invention relates to a yarn brake of the type specified in the preamble of claim 1 and thus equipped textile machines and yarn feeding devices.
Bekannte Fadenbremsen neigen in hohem Maße zur Verschmutzung, da sich während des Betriebs leicht Flusen und Flaum oder an den Fäden haftende Rückstände aus Öl, Paraffin od. dgl. an den Fadenkontakt- bzw. Bremsflächen ansammeln. Es ist daher bekannt, die Bremselemente drehbar auf einem Lagerbolzen anzuordnen (
Es sind weiter Fadenbremsen bekannt, deren Bremselemente so mit einer Schwingungen erzeugenden Einrichtung gekoppelt sind, (
Abgesehen davon wurde festgestellt, daß sich Flusen und Flaum trotz Anwendung der oben beschriebenen Maßnahmen insbesondere auf den mit Schraubendruckfedern versehenen Vorspannmechanismen für die Bremselemente festsetzen. Dadurch kann sich sogar die gewünschte Bremskraft beim Betrieb einer Rundstrickmaschine od. dgl. ändern oder zumindest eine reproduzierbare Einstellung der Bremskraft erschwert werden, was häufige Reinigungsarbeiten und daher Fehlzeiten der Maschinen zur Folge hat. Zur Vermeidung auch dieses Nachteils sind Schutzkappen bekannt (
Die beschriebenen Probleme lassen sich auch nicht mit Hilfe von Fadenbremsen der eingangs bezeichneten Gattung (
Weiterhin ist es bekannt (
Vor diesem Stand der Technik besteht das der Erfindung zugrunde liegende Problem in der Schaffung einer Fadenbremse, die nicht nur die Verschmutzungsgefahr reduziert, sondern auch in konstruktiver Hinsicht befriedigt, indem sie einen üblichen Federmechanismus zur Einstellung der Bremskraft aufweist.Prior to this prior art, the problem underlying the invention in the provision of a yarn brake, which not only reduces the risk of contamination, but also satisfied in terms of design, by having a conventional spring mechanism for adjusting the braking force.
Zur Lösung dieser Aufgabe dienen die kennzeichnenden Merkmale der Ansprüche 1, 15 und 16.To solve this problem, the characterizing features of
Die Erfindung bringt den Vorteil mit sich, daß der mit einer üblichen Feder versehene, zur Einstellung der Bremskraft bestimmte Vorspannmechanismus nicht dem die Bremselemente tragenden Lagerabschnitt, sondern dem in einer Halterung montierten Montageabschnitt eines Lagerbolzens zugeordnet ist. Dadurch ist es möglich, die Feder in einem Einstell- und Schutzkörper unterzubringen, der einerseits zur Montage des Lagerbolzens an der Halterung und zur Einstellung der Bremskraft dient und andererseits die Feder nach außen weitgehend abdeckt. Dagegen stehen die Bremselemente lediglich unter der Wirkung eines am Lagerabschnitt des Lagerbolzens angebrachten Andrückelements, das wie die Bremselemente selbst mit glatten und nur wenig zur Verschmutzung neigenden Flächen versehen werden kann.The invention has the advantage that the provided with a conventional spring, for adjusting the braking force certain biasing mechanism is not assigned to the brake elements bearing bearing portion, but mounted in a mounting bracket portion of a bearing pin. This makes it possible to accommodate the spring in a setting and protection body, which serves on the one hand for mounting the bearing pin on the holder and for adjusting the braking force and on the other hand largely covers the spring to the outside. In contrast, the braking elements are only under the action of a mounted on the bearing portion of the bearing pin pressure element, which can be provided as the brake elements themselves with smooth and only slightly prone to contamination surfaces.
Weitere vorteilhafte Merkmale der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous features of the invention will become apparent from the dependent claims.
Die Erfindung wird nachfolgend in Verbindung mit den beiliegenden Zeichnungen an Ausführungsbeispielen näher erläutert. Es zeigen:
-
Fig. 1 schematisch eine Seitenansicht einer Fadenliefervorrichtung mit einer Fadenbremse; -
Fig. 2 eine schematische und perspektivische Darstellung einer erfindungsgemäßen Fadenbremse; -
Fig. 3 und 4 je einen vergrößerten Längsschnitt durch die Fadenbremse nachFig. 2 in je einem Zustand mit kleiner bzw. großer Bremskraft; und -
Fig. 5 einen derFig. 3 entsprechenden Längsschnitt in einem nochmals vergrößerten Maßstab durch ein zweites Ausführungsbeispiel einer erfindungsgemäßen Fadenbremse in einem Zustand mit kleiner Bremskraft.
-
Fig. 1 schematically a side view of a yarn feeding device with a yarn brake; -
Fig. 2 a schematic and perspective view of a yarn brake according to the invention; -
3 and 4 depending on an enlarged longitudinal section through the yarn brake afterFig. 2 in each case a state with small or large braking force; and -
Fig. 5 one of theFig. 3 corresponding longitudinal section in a further enlarged scale by a second embodiment of a yarn brake according to the invention in a state with a small braking force.
Die in
An dem freien Ende des Trägers 1 sind eine Fadenbremse 7 und eine über dieser angeordnete Fadenöse 8 befestigt. Auf der Unterseite des Trägers 1 ist ein zwischen der Fadenbremse 7 und der Liefertrommel 3 angeordnetes Fadeneinlauf-Leitelement 9, z. B. eine Öse, vorgesehen, während auf der dem Leitelement 9 diametral gegenüber liegenden Seite der Liefertrommel 3 zwei an der Unterseite des Trägers 1 befestigte Fadenauslauf-Leitelemente 10 und 11 vorgesehen sind, die wie das Leitelement 9 aus offenen oder geschlossenen Ösen bestehen können. Ein Faden 12 wird von einer nicht dargestellten Vorratsspule aus durch die Fadenöse 8, die Fadenbremse 7 und das Leitelement 9 schräg von oben und im wesentlichen tangential auf die Fadenauflagefläche der Liefertrommel 3 geführt, auf dieser in wenigstens einer, vorzugsweise mehreren Windungen aufgewickelt und schließlich im wesentlichen tangential abgewickelt und durch die beiden Leitelemente 10 und 11 hindurch einer nicht dargestellten Verarbeitungsstelle einer Strickmaschine od. dgl. zugeführt. Fühler 14 und 15, die ebenfalls am Träger 1 angebracht sind, können in üblicher Weise zur Überwachung des Fadens 12 dienen.At the free end of the carrier 1, a
Fadenliefervorrichtungen dieser Art sind dem Fachmann allgemein bekannt (z. B.
Einzelheiten einer ersten Ausführungsform der erfindungsgemäßen Fadenbremse ergeben sich aus
In einem inneren, mit der Längsachse 22 koaxialen und nach außen, d. h. in
Der Montageabschnitt 24 und mit ihm der ganze Lagerbolzen 25 sind durch eine im Ausführungsbeispiel als Schraubendruckfeder ausgebildete Feder 29 in Richtung der Längsachse 22 und in Richtung einer entgegengesetzt zum Lagerabschnitt 26 liegenden Seite vorgespannt. Die Feder 29 ist dazu auf den Montageabschnitt 24 koaxial auf gezogen, in dem zwischen diesem und der Wand des Einstell- und Schutzkörpers 20 verbleibenden Teil des Hohlraums 23 angeordnet und mit ihren Enden so zwischen dem Vorsprung 28 und der Schulter 27 oder einer anderen Schulter des Einstell- und Schutzkörpers 20 abgestützt, daß sie den Lagerbolzen 25 in
Auf einem außerhalb der Halterung 17, d. h. in
Infolge der beschriebenen Vorspannung des Lagerbolzens 25 durch die Feder 29 in
Beim Betrieb einer den Faden 12 verbrauchenden bzw. verarbeitenden Textilmaschine übt der Faden 12 ein Drehmoment auf die Bremselemente 33, 34 auf. In Abhängigkeit von den Durchmessern der Bremselemente 33 und 34, dem Außendurchmesser der Lagerhülse 31, den Größen der Gleitflächen 37 und 38 sowie den Größen und Durchmessern der mit diesen zusammenwirkenden Flächen am Lagerring 32 und am Andrückelement 39 werden außerdem die Bremselemente 33, 34 in Umdrehungen versetzt, um in an sich bekannter Weise eine Selbstreinigung zu bewirken. Ein besonderer Vorteil der Erfindung ergibt sich dabei aus dem Umstand, daß die Bremselemente 33 und 34, die Halterung 17 mit dem Lagerring 32 sowie das Andrückelement 39 sämtlich mit glatten Oberflächen versehen werden können, die nicht zum Verschmutzen durch Flusen, Staub od. dgl. neigen, wie insbesondere
Ein besonders wesentlicher Vorteil der beschriebenen Fadenbremse besteht schließlich darin, daß die zur Einstellung der Bremskraft verwendete Feder 29 außerhalb des Bereichs der Bremselemente 33, 34 angeordnet und durch den Einstell- und Schutzkörper 20 sowie den Vorsprung 28 nach außen nahezu vollständig abgedeckt ist. Dadurch ist ein Eindringen von Staub und Schmutz in die Räume zwischen den einzelnen Windungen der Feder 29 äußerst unwahrscheinlich, so daß die einmal eingestellte Bremskraft über lange Standzeiten hinweg unverändert bleibt. Außerdem kann die Bremskraft auf einfache Weise reproduzierbar eingestellt werden. Schließlich wird der Zugang zu den Bremselementen 33, 34 in keiner Weise behindert, was auch eine eventuelle Selbstreinigung fördert.A particularly significant advantage of the yarn brake described is, finally, that the
Das Ausführungsbeispiel nach
Im Gegensatz zu
Im Ausführungsbeispiel nach
Im übrigen entsprechen die Ausbildung und die Funktion des Ausführungsbeispiels nach
Die Erfindung ist nicht auf die beschriebenen Ausführungsbeispiele beschränkt, die auf vielfache Weise abgewandelt werden können. Beispielsweise könnte die Lagerhülse 31 fest mit dem Montageabschnitt 26 oder auch fest mit der Halterung 17 verbunden werden. Außerdem könnten die Bremselemente 33, 34 undrehbar auf der Lagerhülse 31 oder dem Montageabschnitt 44 angeordnet sein, falls auf eine Selbstreinigung verzichtet werden kann oder soll. Weiterhin könnte der Lagerbolzen insbesondere im Fall der
Claims (16)
- Thread brake with a holding means (17), a bearing pin (25, 42), which has an axis (22), an assembly section (24, 43) disposed in the holding means (17) and a bearing section (26, 44) located in axial direction next to said assembly section and projecting out of the holding means (17), a first brake element (33) disposed to be axially displaceable on the bearing section (26. 44) and intended for abutment against the holding means (17), and a second brake element (34) disposed to be axially displaceable on the bearing section (26, 44) and intended for abutment against the first brake element (33), and a pretensioning mechanism, which is intended for adjustment of the braking force and which has a spring (29) and a tension element (39, 45) attached to the bearing section (26, 44), characterised in that the assembly section (24, 43) is disposed to be axially displaceable in the holding means (17), the spring (29) axially pretensions the assembly section (24, 43) and the pretensioning mechanism has an adjusting and protecting member (20), which is disposed to be axially displaceable in the holding means (17) and houses the assembly section (24, 43) and the spring (29).
- Thread brake according to Claim 1, characterised in that the adjusting and protecting member (20) is configured as a sleeve, which on a side facing the bearing section (26, 44) has an end wall (27), which has the assembly section (24, 43) projecting through it.
- Thread brake according to Claim 2, characterised in that the end wall has a bearing opening with an inside cross-section, which corresponds essentially to the outside cross-section of the assembly section (24, 43).
- Thread brake according to Claim 3, characterised in that the tension element (39, 45) is configured as a structural part, which increases the cross-section of the bearing section (26, 44) and is intended for abutment against the second brake element (34).
- Thread brake according to one of Claims 1 to 4, characterised in that the two brake elements (33, 34) are disposed directly on the bearing section (26, 44).
- Thread brake according to Claim 5, characterised in that the tension element (45) is moulded onto an end of the bearing section (44) axially remote from the assembly section (43).
- Thread brake according to one of Claims 1 to 4, characterised in that the two brake elements (33, 34) are disposed on a bearing bush (31), which has the bearing section (26) projecting through it.
- Thread brake according to Claim 8 [sic], characterised in that the tension element (39) is configured as a sealing cap, which is detachably fastened to an end of the bearing section (26) axially remote from the assembly section (24).
- Thread brake according to one of Claims 1 to 8, characterised in that the assembly section (24, 43) has a radial projection (28, 46) on an end axially remote from the bearing section (26, 44), and the spring (29) is a helical pressure spring, which is tightened onto the assembly section (24, 43) and which is supported between the projection (28, 46) and a shoulder (27), which is provided on a side of the adjusting and protecting member (20) axially remote from the projection (28, 46).
- Thread brake according to Claim 9, characterised in that the projection (28, 46) is configured in a ring shape and is provided with an outside cross-section, which essentially corresponds to the inside cross-section of a cavity (23) of the adjusting and protecting member (20) housing the assembly section (24, 43).
- Thread brake according to Claim 9 or 10, characterised in that the projection (28) is formed by a bead moulded onto the assembly section (24).
- Thread brake according to Claim 9 or 10, characterised in that the projection (46) is formed by a sealing cap (46) detachably connected to the assembly section (43).
- Thread brake according to one of Claims 7 to 12, characterised in that on a side facing the bearing section (26), the holding means (17) has a bearing ring (32) intended for mounting the bearing bush (31) in an axially displaceable and rotatable manner.
- Thread brake according to one of Claims 1 to 13, characterised in that the holding means (17) has a cylindrical seat (18) provided with an internal thread (19) and the adjusting and protecting member (20) is configured as a sleeve with an external thread (21) fitting into the internal thread (19).
- Textile machine, in particular a circular knitting machine, with at least one thread brake (7), characterised in that the thread brake (7) is configured according to at least one of Claims 1 to 14.
- Thread feed device with at least one thread brake (7) for a textile machine, in particular a circular knitting machine, characterised in that the thread brake (7) is configured according to at least one of Claims 1 to 14.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10345369A DE10345369A1 (en) | 2003-09-26 | 2003-09-26 | Yarn brake and textile machine and yarn feeding device equipped therewith |
DE10345369 | 2003-09-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1518810A1 EP1518810A1 (en) | 2005-03-30 |
EP1518810B1 true EP1518810B1 (en) | 2008-04-02 |
Family
ID=34178022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04020717A Expired - Lifetime EP1518810B1 (en) | 2003-09-26 | 2004-09-01 | Yarn brake and textile machine and yarn feeding device equipped with such a yarn brake |
Country Status (10)
Country | Link |
---|---|
US (1) | US7007777B2 (en) |
EP (1) | EP1518810B1 (en) |
JP (1) | JP2005104730A (en) |
KR (1) | KR20050030859A (en) |
CN (1) | CN1600665A (en) |
AT (1) | ATE391106T1 (en) |
DE (2) | DE10345369A1 (en) |
ES (1) | ES2305631T3 (en) |
SG (1) | SG110147A1 (en) |
TW (1) | TW200519022A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103395661A (en) * | 2013-07-23 | 2013-11-20 | 吴江市世华丝绸有限公司 | Yarn tension device |
CN103508239B (en) * | 2013-09-25 | 2015-12-23 | 江苏海大印染机械有限公司 | A kind of novel cloth feeding adjusting device for tentering boarding machine |
US9394639B2 (en) | 2014-10-16 | 2016-07-19 | Handi Quilter, Inc. | Motorized thread tensioner for a sewing machine |
US8997669B1 (en) * | 2014-10-16 | 2015-04-07 | Handi Quilter, Inc. | Thread tensioner for a sewing machine |
CN106245213B (en) * | 2016-09-23 | 2018-08-03 | 海盐维博雅针织制衣有限公司 | A kind of knitting machine modified form feed carrier |
IT201900009153A1 (en) * | 2019-06-17 | 2020-12-17 | Fosber Spa | ARM FOR ONE UNWINDER AND UNWINDER INCLUDING SAID ARM |
CN112090247B (en) * | 2020-10-31 | 2023-01-17 | 张家港市金秋环保科技有限公司 | Electric field line tensioning adjusting device and tensioning adjusting method |
CN112481999A (en) * | 2020-11-26 | 2021-03-12 | 江西锦囊商旅信息有限公司 | Intelligent spinning cutting device for spinning |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE913148C (en) * | 1940-09-04 | 1954-06-08 | Universal Winding Co | Thread tensioning device for winding machines and similar machines |
US2283912A (en) * | 1940-09-04 | 1942-05-26 | Universal Winding Co | Tension device for winding and like machines |
GB629319A (en) * | 1946-03-13 | 1949-09-16 | Universal Winding Co | Improvements in or relating to tension-devices for tensioning strand materials |
CH315852A (en) * | 1953-09-22 | 1956-09-15 | Schweiter Ag Maschf | Thread brake with brake discs |
CH357008A (en) * | 1958-02-06 | 1961-09-15 | Schweiter Ag Maschf | Thread brake with two pairs of brake disks and a thread feeler arranged between the two pairs of brake disks |
DE3504739C2 (en) | 1984-03-13 | 1995-02-09 | Frei Gmbh & Co Geb | Thread brake for textile machines |
DE3529369C1 (en) * | 1985-08-16 | 1986-11-27 | Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern | Sewing machine with a device for tensioning the needle thread |
DE3629928A1 (en) | 1986-09-03 | 1988-03-10 | Norddeutsche Faserwerke Gmbh | SHARPENING SYSTEM AND DISC THREAD BRAKE |
US5070745A (en) * | 1990-12-24 | 1991-12-10 | Lindsey Kelly D | Asymmetrical differential drive |
DE4104663C1 (en) | 1991-02-15 | 1992-08-13 | Memminger-Iro Gmbh, 7290 Freudenstadt, De | |
DE4112898A1 (en) * | 1991-04-19 | 1992-10-22 | Werner Schlaich | Cover for knitting machine tension - used to protect the spring and screw from dust lint and fly |
US5211122A (en) * | 1992-07-15 | 1993-05-18 | Lin Horng Ji | Thread tension device for a sewing machine |
DE4301507C2 (en) | 1993-01-21 | 1995-01-26 | Memminger Iro Gmbh | Thread brake |
DE29521428U1 (en) | 1995-10-13 | 1997-03-20 | BARTH-TEX Instruments + Software GmbH + Co, 72411 Bodelshausen | Thread brake |
DE19720795A1 (en) | 1997-05-16 | 1998-11-19 | Sipra Patent Beteiligung | Thread brake and textile machine equipped with it and thread delivery device |
DE29907679U1 (en) * | 1999-04-30 | 2000-09-07 | Saurer-Allma Gmbh, 87437 Kempten | Thread brake for textile machines |
-
2003
- 2003-09-26 DE DE10345369A patent/DE10345369A1/en not_active Withdrawn
-
2004
- 2004-09-01 ES ES04020717T patent/ES2305631T3/en not_active Expired - Lifetime
- 2004-09-01 AT AT04020717T patent/ATE391106T1/en not_active IP Right Cessation
- 2004-09-01 DE DE502004006710T patent/DE502004006710D1/en not_active Expired - Fee Related
- 2004-09-01 EP EP04020717A patent/EP1518810B1/en not_active Expired - Lifetime
- 2004-09-10 US US10/939,261 patent/US7007777B2/en not_active Expired - Fee Related
- 2004-09-17 SG SG200405127A patent/SG110147A1/en unknown
- 2004-09-23 KR KR1020040076191A patent/KR20050030859A/en not_active Application Discontinuation
- 2004-09-23 TW TW093128901A patent/TW200519022A/en unknown
- 2004-09-23 CN CNA2004100798802A patent/CN1600665A/en active Pending
- 2004-09-27 JP JP2004278867A patent/JP2005104730A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE10345369A1 (en) | 2005-05-12 |
ES2305631T3 (en) | 2008-11-01 |
EP1518810A1 (en) | 2005-03-30 |
CN1600665A (en) | 2005-03-30 |
US20050067228A1 (en) | 2005-03-31 |
JP2005104730A (en) | 2005-04-21 |
KR20050030859A (en) | 2005-03-31 |
US7007777B2 (en) | 2006-03-07 |
DE502004006710D1 (en) | 2008-05-15 |
TW200519022A (en) | 2005-06-16 |
SG110147A1 (en) | 2005-04-28 |
ATE391106T1 (en) | 2008-04-15 |
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