EP2034060A1 - Machine textile dotée d'un banc d'étirage - Google Patents

Machine textile dotée d'un banc d'étirage Download PDF

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Publication number
EP2034060A1
EP2034060A1 EP07017643A EP07017643A EP2034060A1 EP 2034060 A1 EP2034060 A1 EP 2034060A1 EP 07017643 A EP07017643 A EP 07017643A EP 07017643 A EP07017643 A EP 07017643A EP 2034060 A1 EP2034060 A1 EP 2034060A1
Authority
EP
European Patent Office
Prior art keywords
deflection
textile machine
guide
machine according
freewheel
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.)
Withdrawn
Application number
EP07017643A
Other languages
German (de)
English (en)
Inventor
Daniel Dietrich
Ludek Malina
Emil Krejci
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to EP07017643A priority Critical patent/EP2034060A1/fr
Priority to PCT/CH2008/000373 priority patent/WO2009033303A1/fr
Priority to CN2008801151406A priority patent/CN101868569B/zh
Priority to EP08783473A priority patent/EP2198079A1/fr
Priority to JP2010524327A priority patent/JP2010539339A/ja
Publication of EP2034060A1 publication Critical patent/EP2034060A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/86—Aprons; Apron supports; Apron tensioning arrangements

Definitions

  • the invention relates to a textile machine with a drafting system, comprising two, a main drafting zone forming main pairs of drafting rollers each having a top and bottom rollers, the first in the fiber flow direction Kleinverzugswalzensection a Riemchen entry with a guided around the top roller upper and a guided to the lower roller Unterriemchen for guiding the is associated with stretched fiber structure, and wherein at least one of the straps is associated with a multi-part deflection device, via which the strap is deflected from the fiber guiding direction in a return direction, and the deflection comprises a base body and a patch on the base Umlenk arrangement.
  • the invention further relates to a textile machine with a drafting system, comprising two, a main drafting zone forming main pairs of drafting rollers each having a top and bottom rollers, the first in the fiber flow direction
  • Unterriemchen for guiding is associated with the stretched fiber structure
  • at least one of the straps a strapping device is associated with a pivotable about a pivot clamping arm, by means of which the strap is stretched.
  • Draw frames are used in textile technology for the warping of slivers in spinning machines, in regulating lines and flyers.
  • the slivers warped in the drafting systems of spinning machines are spun into a yarn following the drafting operation by a spinning process.
  • a conventional drafting system consists of at least two pairs of rollers, but preferably of three or four pairs of rollers.
  • One, two pairs of rollers passing fiber structure is warped by the different speeds of the two pairs of rollers. The delay takes place between the nip lines of the two pairs of rollers.
  • the two clamping lines form the so-called clamping distance. Within the clamping distance is the draft zone.
  • a drafting system contains at least one main draft zone in which the fiber structure is warped at high distortion values becomes. Widely used are three-cylinder drafting systems with a pre-draft zone and a downstream main draft zone.
  • the fiber structure in the main draft zone lose their cohesion and begin to float, the fiber structure is guided between the nip lines of the two pairs of drafting rollers through straps.
  • Most widespread are the so-called Doppelriemchenstrecktechnike.
  • a strap is in each case guided around a first upper and lower roller of the main draft zone, which is deflected toward the second roller pair by a deflection device from the fiber guiding direction in a return direction.
  • the fiber strand is thus guided between the first nip line and the deflector through the upper and Unterriemchen.
  • the strap in particular the lower strap, is guided as an endless strap at least around the first lower roller, a deflection device and optionally a tensioning device.
  • the strap can be made as Endlosriemchen or consist of a Riemchenstsammlung whose end are glued to a Endlosriemchen.
  • the tensioning device With the tensioning device, the lower apron is tensioned.
  • the Unterriemchen can also be performed by more than one roller or roller.
  • One of the rollers, in particular the lower roller thereby drives the lower apron, with a frictional connection with the upper apron or the upper roller ensuring the transmission of the drive torque from the roller to the apron.
  • the fiber strand is guided in the main delay between two straps to the outlet roller pair.
  • the lower strap is driven by the lower center roller, then runs over a specially designed guide element or a deflection and a tensioning unit.
  • the distortion quality or fiber guidance of the fiber structure is of crucial importance for the subsequent yarn quality.
  • a controlled distortion variation results in a default Fancy yarn without unwanted effects. Since the main delay takes place in the double apron drafting system, special attention is paid to optimum strapping. In single-belt and especially in double apron drafting systems, therefore, flawless belt guidance is of crucial importance.
  • an easily mountable multi-part deflection bridge is to be proposed.
  • Multi-part deflection bridges are already known as such from the prior art.
  • CN 2,729,111 Y a two-part deflection bridge, a base body and a guide surface forming the guide body.
  • the main body and the guide body are connected to one another via screw connections.
  • the DE 42 27 490 is a Riemchenstrecktechnik assigned in the machine longitudinal direction over a plurality of spinning stations continuous support rail made of sheet metal, on which a plurality of Umlenk Entryen containing Unterriemchenhalter are attached.
  • the deflection guides are T-shaped and attached with their narrow end on the end portion of the support rail.
  • the JP 101 58 942 in turn discloses a deflection bridge of a base body of sheet-metal material and a cover made of friction-resistant material.
  • the main body has a bearing surface for the strap, wherein the cover is mounted so that it covers the bearing surface of the body.
  • an improved strapping device is proposed. Riemchenspannvorraumen are known from the prior art as such.
  • the pawl lock comprises a sprocket, which has the function of a toothed ratchet wheel, and a pawl member which engages in the toothing of the ratchet wheel.
  • the ratchet teeth fall by their own weight or under spring load automatically.
  • the latch lock is to facilitate the preloading.
  • the clamping operation is carried out by conventional tools before commissioning the spinning machine.
  • the DE 102 18 876 A1 describes a Unterriemchen a drafting system, which is stretched by a clamping bracket, wherein the clamping force is exerted by a spring.
  • the base body is a holding rail which extends through a plurality of spinning positions in the machine longitudinal direction and has a holder head and a holder neck.
  • the mounting head has a cross-sectional view on a, extending laterally over the neck support extension.
  • the holder head preferably forms on both sides starting from the neck approach transversely to the holder neck laterally beyond this projecting projection or bead.
  • the mounting head forms the support surface of the deflection guide, wherein the deflection guide is placed or pushed onto the mounting head and a form-fitting, in particular snap connection, is releasably connected thereto.
  • the mounting rail is preferably made in one piece.
  • the main body or the mounting rail preferably has a T-shaped cross-sectional contour.
  • the mounting rail preferably runs in the machine longitudinal direction over a plurality of drafting devices or spinning stations.
  • On the mounting rail one (continuous) or more, distributed over one or more spinning stations deflection guides, preferably per spinning station or twin spinning a Umlenk Entry, detachably mounted or pushed by means of a positive connection.
  • a plurality of deflecting guides are provided per machine side and preferably also per basic body, with one deflecting guide serving one, two or more spinning stations in each case.
  • a separate basic body can also be provided for each spinning station or twin spinning station.
  • a twin spinning station includes two independent spinning units with twin drafting, the top rollers are supported by a common load arm.
  • the main body can z. B. each between two cylinder supports, also called punching, run continuously, ie be integrally formed, and over a plurality of spinning stations, z. B. eight spinning stations extend.
  • the support rail may be made of plastic or metal, in particular aluminum or steel.
  • the mounting rail can be formed from sheet metal. However, it can also be an extrusion profile or a cast iron body.
  • the deflection guide consists essentially of a plastic, in particular of an extruded plastic profile.
  • the deflection guide preferably contains or consists of a polyamide (PA), such as PA6, PA11, PA12, PA46, PA6-G or a copolyamide or polyamide blend.
  • PA polyamide
  • the deflection guide is advantageously made of a PA 66.
  • the polyamides mentioned may be provided with or without additionally integrated solid lubricants or lubricant additives or have a MoS 2 or graphite modification.
  • modified amorphous plastics such as PC, PMMA, PVC-U, ABS or PS are also suitable with lubricant additives, even if they do not necessarily achieve the advantageous sliding and wear behavior of PA 66.
  • the plastic of the deflection guide may include other additives, such. As flame retardants or antistatic additives to prevent a caused by friction static charge of the components.
  • the surface of the deflection guide may also be coated with a material which corresponds to desired sliding properties having.
  • the plastic also fillers such. B. glass beads included.
  • the deflection guide preferably contains elastically deformable joining members. That the elastic joining members have a resilience.
  • the deflection guide goes via the joining members with the mounting head a positive connection, in particular a snap connection, also called clip connection, a.
  • a snap connection also called clip connection, a.
  • the elasticity of the joining members which are made of plastic or spring steel, exploited for the connection with the mounting head.
  • the or the joining members of the deflection guide deform elastically and thereby releasably entangled with a counter-member on the support head.
  • the counterpart is usually a projection, bead, a guide rail or a nose over which jumps a nose, a projection or a bead or hook-shaped approach to the deflection guide or the joining member.
  • the deflection guide includes one or more, elastic joining members which engage in a groove, in particular in an undercut groove, on the support surface of the support head and connect the deflection guide positively and releasably connected to the base body.
  • the joining members themselves can each be formed with a projection or nose, which are snapped into the groove on the holder head.
  • the joining members may also be dovetail-shaped projections.
  • the deflection guide can also alternatively or in addition to the above-described Fügegliedern longitudinally running, elastic bending sections as further joining members having laterally surround the outer periphery of the support head, preferably lateral longitudinal strips on the support head in a snap connection and define the deflection guide laterally on the support head.
  • the joining members or the bending sections are preferably an integral part of the deflection guide.
  • the bending sections may further comprise aprons or collars, which extend into the neck region of the main body and bear against it. However, a lower portion of the retaining neck, over which the deflection guide is attached to the drafting device, preferably remains free. Contains the deflection guide lateral bending sections with collar or aprons, the deflection guide is preferably pushed laterally onto the base body.
  • the deflection guide can therefore be pushed laterally over the mounting rail instead of a snap connection, but with the formation of a positive connection.
  • the deflection guide is such that its free surface forms the guide geometry for the strap.
  • the deflection guide preferably takes over the complete Riemchen Unit.
  • the geometry of the mounting head is preferably adapted to the geometry of the form-locking connection to be formed with the deflection guide.
  • the guide surface can, depending on the drafting z. B. substantially planar, convex or stepped.
  • the deflecting guide can have a deflecting apron at the deflection point of the apron, which defines a deflecting radius in the guiding surface. In this way, the deflection of the strap is no longer abruptly over an edge, but evenly around the deflection radius of the deflection apron.
  • the deflection radius can z. B. at the beginning 2 mm or larger, or 5 mm or greater.
  • the guide surface may contain two or more curved sections with different radii of curvature in the deflection region. In a preferred embodiment, the radius of curvature increases from one curvature section to the next in the apron travel direction. That the deflection region has an outgoing radius of curvature, which z. B. from 2 mm continuously increases to 30 mm or more.
  • the guide surface of the deflection guide may be smooth or have a defined roughness pattern. That is, the guide surface may be such that it has elevations and depressions and in this way the friction-relevant overall contact surface between the belt and the deflection guide is reduced.
  • the elevations may take the form of continuous or interrupted ribs, which may be e.g. B. transverse, longitudinal or oblique to the transport direction of the strap, have bumps or vaults.
  • the guide surface can also be orange skin-like.
  • the roughness patterns may include strictly geometric patterns or random patterns.
  • the height between the recesses and increase is z. B. 0.01 mm or more, preferably 0.05 mm or more, in particular 0.1 mm or more.
  • the height between the recesses and increase is also z. B. 0.5 mm or less, preferably 0.3 mm or less.
  • the lateral extent of the depressions and increase is z. B. 0.01 mm or more, preferably 0.05 mm or more, in particular 0.1 mm or more.
  • the lateral extent between the recesses and increase is also z. B. 0.5 mm or less, preferably 0.3 mm or less.
  • the surface of the mounting head on the contour of the strap guide surface is mounted about the mounting head a deflection guide is mounted from a flat, flexible plastic, which forms a positive connection via lateral bending sections with the mounting head and / or with a spring / groove clip connection.
  • the deflection guide is designed such that it conforms to the surface of the holder head and assumes its contour.
  • the deflection guide is preferably formed as a flexible band-shaped cover made of plastic with a relatively thin wall thickness, which is striped over the mounting head.
  • the cover is preferably made of an extruded plastic profile.
  • the cover can also extend over the longitudinal extent of several spinning stations or the entire length of the mounting rail.
  • the deflection guide can be formed in a development of the invention so that it has resilient portions in operation, z. As the deflector, and in this way a spring-damped leadership of the strap on the deflection bridge, also called turn rail, table or deflection guide, guaranteed.
  • the deflection device has the advantage that, independently of the drafting system geometry, a uniform base body can be used.
  • a simple manner can now depending on the spinning process, or the fiber material or the staple length, apply the deflecting guides in the desired geometry, in particular in the desired longitudinal extent in the fiber direction and with the desired surface properties on the body.
  • the deflection guides can be exchanged for other deflection guide with a different geometry or with other surface properties. For this, neither drilling must be made, nor is special assembly tool necessary.
  • the connection interfaces of differently configured deflecting guides are compatible with the connection interfaces on the base body. Thanks to the inventive deflection bridge can, for. B. the transition from lower roller to Umlenkmaschine be optimally adjusted even with a different roll spacing. That the gap between lower roller and deflection bridge can be kept correspondingly small.
  • existing textile machines can also be converted simply and cost-effectively by providing the existing deflection bridge according to the invention with a new support surface (deflection guide). There are also no holes for fixing the support surface necessary.
  • the deflection device according to the invention has the further advantage that the surfaces of the metal rails (main body) no longer, as before, must be exactly worked and specially coated. Rather, only the clip-on deflection guide made of plastic must be made according to precise. However, this is much cheaper.
  • the freewheel can z. B. be a pawl freewheel.
  • This includes a gear and a rotatably mounted about an axis pawl, which is spring-loaded or pressed by gravity on the gear.
  • the special shape of the teeth allows rotation of the gear or the pawl in the one direction of rotation, but prevents the reverse rotation in the other direction.
  • the freewheel can also be a pinch roller or sprag freewheel.
  • a pinch roller or sprag freewheel between an inner part, for. B. a "star" or an inner ring with sprocket, and an outer part, for. B. an outer ring, pinch rollers or clamp body stored.
  • the rollers or body wedged between the outer and inner part or allow relative rotation of the two parts to each other.
  • the freewheel always contains a rotating element and a blocking element.
  • the rotary member and the locking member are operatively connected to each other in such a way that the rotary member is rotatably mounted in the freewheeling direction relative to the locking element and against the freewheeling rotation, ie in the reverse direction, relative to the locking element is not rotatable, that is locked.
  • the blocking element is always fixed against rotation on a holder or non-rotatably connected with the use of a slip clutch with a coupling part.
  • the loading device preferably contains a, on the clamping arm a restoring force exerting, elastic, in particular spring-elastic element. The restoring force is exerted on the tensioning arm, in particular during operation of the spinning machine. This ensures that the strap is always optimally tensioned, even with different running behavior.
  • the strapping tension direction is in freewheeling direction.
  • the elastic element may, for. Example, a spring, in particular a torsion spring, leaf spring or a coil spring, be.
  • the slip clutch serves to bridge the freewheel. It preferably includes a coupling rotary member (first coupling body) and a coupling locking member (second coupling body) which abut each other while applying a static friction.
  • the coupling rotary element is rotatable in bridging the static friction against the Riemchenspanntaxraum, while the coupling locking element is rotatably attached to the device.
  • the slip clutch is now z. B. with the freewheel so in operative connection that for bridging the freewheel the first coupling body together with the blocking element of the freewheel is jointly against the freewheeling rotation rotatable. That the first coupling body is rotatably connected to the freewheel locking element.
  • the bridging of the blocking effect of the freewheel happens from a certain, freely adjustable torque, which triggers the overcoming of the static friction between the two coupling body.
  • the tensioning arm contains at the end a strap guide element which is in contact with the strap and over which the strap is guided or deflected.
  • a Riemchenstrecktechnik the apron at the output of the Riemchen entry a deflection, in particular a deflection, assigned, over which the strap is deflected from the fiber guiding direction in the return.
  • the Riemchenspannvorraum starts here with her attached to the clamping arm Riemchen Resultselement on loose Trumm between the deflector and the lower roller.
  • the deflection device as described in detail above, can be constructed in two parts, i. from a deflection guide and a base body.
  • a deflection in particular a deflection, assigned, over which the strap is deflected from the fiber guiding direction in a return direction.
  • the deflection device also forms part of the strap tensioning device or forms it.
  • the deflection is connected via the clamping arm with a loading device and the freewheel, and optionally with the slip clutch.
  • the strapping device refers to the description of the strapping device.
  • the deflection device can also be constructed in two parts according to this embodiment, as described in detail above, i. from a deflection guide and a base body.
  • the drafting system in which the invention finds application, is a single or Doppelriemchenstreckwerk.
  • the inventive Riemchen entry is used in the main drafting zone of the drafting system.
  • the drafting system can have, in addition to the main draft zone, one or more default draft zones which form pre-draft zones.
  • the drafting z. B a two-stage drafting system with inlet roller pair, middle roller pair (with Riemchen Entry) and outlet roller pair.
  • a Luntenspann timber may be provided which provides for a uniform Luntenthere without pre-delay in the Luntenzuschreib to the first pair of rollers at the beginning of the strap out main delay zone.
  • the main drafting zone can be arranged downstream of a compacting device, in particular a pneumatic compacting device, as known from the prior art.
  • the strapping device according to the invention is used on the under- and / or upper apron, but preferably on the lower apron.
  • the deflection device according to the invention likewise finds application on the lower and / or upper apron, but preferably on the lower apron.
  • the straps can z. B. be of a textile material.
  • the invention is preferably used in drafting systems of spinning machines, such as ring spinning, funnel spinning, bell spinning, pot spinning or air jet spinning machines. Furthermore, the invention can also be used in drafting systems of regulating lines or flyers.
  • the deflecting bridge according to the invention permits rapid and cost-effective adaptation of the apron guide to different types of straps, roller distances and to different cage lengths by exchanging the deflecting guide while the basic body remains the same.
  • Fig. 1 shows a section through a Doppelriemchenstrecktechnik 1, z. B. a ring spinning machine.
  • the drafting system includes an inlet roller pair 2a, 2b, a middle roller pair 3a, 3b and an outlet roller pair 4a, 4b.
  • a Riemchen exchange is formed around the middle roller pair 3a, 3b.
  • a Unterriemchen 9 is passed over the lower roller 3b, a Riemchenspannvortechnisch 11 and a deflection bridge 10.
  • An upper apron 8 is guided around the upper roller 3a and a deflection device 5.
  • the Unterriemchen 9 is driven by the lower roller 3b.
  • the top apron 8 and the top roll 3a are driven directly or indirectly via the bottom roll 3b.
  • the roving 6 is fed via an inlet funnel 7 to the inlet roller pair 2a, 2b and from there through the Riemchen Entry between the middle roller pair 3a, 3b led to the outlet roller pair 4a, 4b, from where the stretched but untwisted fiber structure 12 is fed directly or via a compacting device of the spinning device ,
  • the roving 6 undergoes a preliminary delay between the inlet roller pair 2a, 2b and the middle roller pair 3a, 3b.
  • the fiber structure 12 supported by the apron guide experiences the main distortion.
  • a uniform Riemchen entry with constant Riemchenschreib is at the main delay to a great importance, since the straps must lead the fiber structure of the middle roller pair 3a, 3b to the nip of the outlet roller pair 4a, 4b.
  • the Riemchen Entry is influenced inter alia by the deflection bridge 10.
  • This is here constructed in two parts according to the invention, with a guide element 13 and a base body 14 with a mounting head and support neck.
  • the strap tension and also the strap guide is controlled by the strap tensioning device 11.
  • This includes a clamping arm 15, a spring-loaded loading device 16 and a novel freewheel 18 with a freewheeling direction R and a freewheeling lock S.
  • the freewheel 18 is also an inventive slip clutch 17 assigned.
  • rollers 2a, 2b, 3a, 3b, 4a, 4b are guided in holders, wherein the lower rollers 2b, 3b, 4b are respectively driven.
  • the upper rollers 2a, 3a, 4a are arranged in holders of a loading arm 19 and are driven as pressure rollers by the lower rollers.
  • Fig. 10 shows a cross section through a partial section of another Doppelriemchenstreckwerks, z. B. a ring spinning machine, in the region of Riemchen entry. Shown are a middle roller pair 133a, 133b and an outlet roller pair 134a, 134b. Around the middle roller pair 133a, 133b, a Riemchen arrangement is formed. A Unterriemchen 139 is passed over the lower roller 133 b and a deflecting device 140. A top apron 138 is passed around the top roller 133a and a diverter 135. The lower apron 139 is driven by the lower roller 133b. The upper apron 138 and the upper roller 133a are driven directly or indirectly via the lower roller 133b.
  • the fiber structure 136 is supplied from the middle roller pair 133a, 133b to the outlet roller pair 134a, 134b and thereby passes through the belt guide. From the nip of the pair of outlet rollers, the drawn but untwisted fiber structure is fed directly or via a compacting device to the spinning device (not shown). The fiber structure 136 experiences between the middle roller pair 133a, 133b and the outlet roller pair 134a, 134b, the main delay supported by the Riemchen Unit.
  • the strapping device according to the invention here corresponds to the deflection device, in which the strapping is deflected from the fiber guiding direction in a return direction.
  • the deflection device 140 includes a deflection bridge 143, which is connected via a clamping arm 149 with a loading device 148 and a freewheel 145 and a friction clutch 141.
  • the interaction of the loading device 148, the freewheel 145 and the slip clutch 141 corresponds to the above statements.
  • the storage and the drive of the rollers are carried out as described above.
  • the Riemchenwood and the Riemchen entry are now controlled by the deflection 140. Another Riemchen entry is not provided. That is, the Riemchen Entry is ensured by the lower roller and the deflection.
  • the lower roller can z. B. be provided as a large lower roller with a diameter of greater than 35 mm, preferably greater than 40 mm, in particular greater 45 mm.
  • the Unterriemchen wraps around the lower roller by more than 180 °, preferably more than 200 °, in particular more than 220 °.
  • the deflecting bridge 143 can also be constructed in two parts according to the invention here, with a guide element and a base body with a mounting head and support neck, as described in detail above.
  • Fig. 2a to 2d show various embodiments according to the invention deflection bridges 30, 40, 50, 60 in cross section.
  • the deflection bridge is in each case composed of a deflection guide 31, 41, 51, 61 and a base body 32, 42, 52, 62.
  • the main body in turn contains in each case a holder head 33, 43, 53, 63 and a holder neck 34, 44, 54, 64, which merges over the neck extension into the holder head.
  • the mounting head forms a bearing surface on which the deflection guide 31, 41, 51, 61 rests.
  • an undercut groove 37, 47, 57, 67 is provided in the mounting head, in which spring-elastic joining parts 36a, 36b, 46a, 46b, 56a, 56b, 66a, 66b of the deflection guide 31, 41, 51, 61 are snapped with projecting lugs.
  • the deflection guide contains laterally arranged bending sections 35a, 35b, 45a, 45b, 55a, 55b, 65a, 65b, which engage laterally around a projection or a guide strip 39a, 39b on the holder head and enter into a form-locking connection therewith.
  • the deflection guide has different geometries of guide surfaces 38, 48, 58, 68.
  • Fig. 3 shows a plan view of a deflection bridge 30, z. B. according to Fig. 2a .
  • the main body 32 is formed as a mounting rail, which extends over a plurality of spinning stations. At a distance from each other and the individual spinning stations are assigned deflection guides 31a, 31b, 31c on the support rail, in particular in an undercut, continuous longitudinal groove 37, clipped, such. Tie Fig. 2a - d described.
  • the strap (not shown), which is usually made of a textile material, runs over the surface of the deflection guide.
  • Fig. 4a shows a deflection bridge 70 in a perspective view.
  • the deflection bridge is composed in each case of a deflection guide 71 and a mounting rail 72.
  • the support rail in turn, each includes a support head 73 and a support neck 74 which merges over the neck into the support head.
  • the mounting head forms a bearing surface, which rests on the deflection guide 71.
  • the deflection guide ( Fig. 4b ) contains lateral bending sections arranged 75a, 75b, which grip laterally around the mounting head and enter into a positive connection with this.
  • the lateral bending portions 75a, 75b include a collar 76a, 76b and extend therewith into the support neck 74.
  • the lower neck portion over which the deflection bridge 70 is attached to the spinning machine is free.
  • the deflection bridge 80 includes a support rail 82 having a support neck 84 and a support head 83.
  • the surface of the support head 83 has the contour of the apron guide surface.
  • a deflection guide 81 is applied from a flat, flexible plastic ( Fig. 5b ), which forms a positive connection via lateral bending sections 85a, 85b with the holder head 83.
  • the flexible deflection guide is such that it conforms to the surface of the holder head 83 and assumes its contour.
  • the deflection bridge deflection guides with different leadership properties can be replaced with little effort. Guiding properties relate z. B. on the geometry of the guide surface, such. Tie Fig. 2a-d shown. Furthermore, the guide properties also relate to the surface roughness of the deflection guide.
  • the deflection guide 91 of the deflection bridge 90 which is applied to the mounting head 93 of a support rail 92, z. B. according to Fig. 6 on its guide surface on a corrugated or corrugated surface, so that the contact surface between the belt and Umlenk entry and thus the friction is reduced.
  • the embodiments according to Fig. 7a and 7b are also characterized in that the deflecting guide 203, 223 made of plastic by means of a clip connection, also called snap-lock, is clipped onto a holder head 202, 222.
  • the deflecting guide 203, 223, viewed in the fiber flow direction at the front and / or rear end portion of the holder head 202, 222 has a resilient wall 204, 224 or one or more resilient tongues with latching noses or clip hooks 205, 225, which engage in a recess 207, 227 and / or snapping on a projection 206, 226 snap on the holder head 202, 222.
  • the elastic design of the Clip wall or clip tongue 204, 224 allows repeated engagement and release of the clip connection.
  • the spring-elastic element must be deflected with the use of force such that the clip nose or hooks 205, 225 can be released from the rearward engagement with the projection 206, 226 or from the recess 207, 227.
  • the deflecting guide 203, 223 may also have spring-elastic properties per se, so that the deflecting guide 203, 223 and / or the resilient wall or tongue 204, 224 are deflected or elastically deformed for producing or releasing the clip connection.
  • the clip connection may be provided on both of said end portions.
  • the deflection guides 203, 223 further include web-like projections 208a, 208b, 208c directed towards the holder head 202, 222; 228a, 228b, 228c, via which the deflection guide 203, 223 rests in the mounted state of the holder head 202, 222.
  • the web-like structure gives the deflection guide the necessary rigidity while maintaining a certain elasticity, as z. B. may be necessary for assembly / disassembly. Further, material is saved by the web-shaped projections and the resulting cavities between the mounting head and deflection in the mounted state, since the deflection guide is not formed as a solid body.
  • the deflection guide 243 made of plastic via a pin connection with the support head (not shown) is connected.
  • the deflecting guide 243 has on the side facing the holder head one or more connecting pins 242 which are inserted into one or more recesses on the holder head and thus form the connection between the holder head and deflecting guide 243.
  • This connection preferably takes place in a form-fitting manner.
  • the pin can be elastically compressed or deformed.
  • the pin 242 may be formed as a solid or hollow pin be.
  • the pin connection may be provided alternatively or in addition to one of the above-mentioned clip connection.
  • the Fig. 8 shows a loaded with a torsion spring 123 clamping arm 121 a Riemchenspann Rhein 120.
  • the torsion spring exerts a directed in the freewheeling direction restoring force on the clamping arm. Characterized the voltage applied to the strap guide portion 122 of the clamping arm 121 straps is tensioned (not shown).
  • the torsion spring is arranged concentrically to the axis of rotation of the clamping arm 121.
  • the loading device according to Fig. 7 can in combination with a freewheel, such. Tie Fig. 8a-d shown to be used.
  • Fig. 9a shows a known as such pinch roller freewheel 100 with outer ring 102 and an inner star 103, between which pinch rollers 101 are arranged.
  • the clamping arm 104 is rotatably connected to the star 103.
  • the star is designed so that it is freely rotatable in a freewheeling direction R and is blocked in the opposite direction freewheeling direction S by the wedged between star 103 and outer ring 102 pinch rollers 101.
  • Fig. 9b shows a known as such pawl freewheel 110 with a gear 113 and a spring-loaded, about a pivot point 115 mounted pawl 112 which is pressed against the gear 113.
  • a clamping arm 114 With the gear 113, a clamping arm 114 is rotatably connected.
  • the teeth 117 of the gear 113 are such that the gear 113 is freely rotatable in a freewheeling direction R and is blocked in the opposite freewheeling direction S by the pawl 112.
  • Fig. 9c shows a particular embodiment of a pawl freewheel 160 with a toothed disc 163, in which the teeth 167 are arranged on the toothed disc in the circumferential direction.
  • the freewheel includes a not shown at this point pawl element, which is arranged according to this embodiment on the clamping arm 164 at the level of the toothing 167 and engages in this.
  • the clamping arm 164 is freely rotatable with the pawl member about an axis 168.
  • the pawl member is pressed by a corresponding force in the toothing 167 of the toothed disc 163, which, due to the alignment of the teeth, only the rotation of the Clamping arm 164 in the freewheeling direction R permits.
  • the toothed disc 163, however, is fixed against rotation on the axis 168.
  • An optional friction clutch ensures the bridging of the freewheel by the clamping arm together with the toothed disc on the slip clutch in freewheeling rotational locking direction S is rotatable back (not shown).
  • Fig. 9d shows a particular embodiment of a pinch roller freewheel 170 with an outer ring 172 and an inner ring 173 with ring gear 177, between which pinch rollers 171 are arranged.
  • the clamping arm 174 is rotatably connected to the outer ring 172 and rotatably mounted about an axis 178, wherein the freewheel, due to the alignment of the teeth 177, only the rotation of the clamping arm 174 in the freewheeling direction R permits.
  • the ring gear 173 is rotationally fixed to the axis 178 fixed.
  • An optionally arranged slip clutch ensures the bridging of the freewheel by the clamping arm 174 together with the ring gear 173 via the slip clutch in the freewheeling locking direction S is rotatable back (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP07017643A 2007-09-10 2007-09-10 Machine textile dotée d'un banc d'étirage Withdrawn EP2034060A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP07017643A EP2034060A1 (fr) 2007-09-10 2007-09-10 Machine textile dotée d'un banc d'étirage
PCT/CH2008/000373 WO2009033303A1 (fr) 2007-09-10 2008-09-05 Machine textile à train d'étirage
CN2008801151406A CN101868569B (zh) 2007-09-10 2008-09-05 具有牵伸机构的纺织机
EP08783473A EP2198079A1 (fr) 2007-09-10 2008-09-05 Machine textile à train d'étirage
JP2010524327A JP2010539339A (ja) 2007-09-10 2008-09-05 ドラフト装置を備えた繊維機械

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07017643A EP2034060A1 (fr) 2007-09-10 2007-09-10 Machine textile dotée d'un banc d'étirage

Publications (1)

Publication Number Publication Date
EP2034060A1 true EP2034060A1 (fr) 2009-03-11

Family

ID=39032229

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EP07017643A Withdrawn EP2034060A1 (fr) 2007-09-10 2007-09-10 Machine textile dotée d'un banc d'étirage
EP08783473A Withdrawn EP2198079A1 (fr) 2007-09-10 2008-09-05 Machine textile à train d'étirage

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08783473A Withdrawn EP2198079A1 (fr) 2007-09-10 2008-09-05 Machine textile à train d'étirage

Country Status (4)

Country Link
EP (2) EP2034060A1 (fr)
JP (1) JP2010539339A (fr)
CN (1) CN101868569B (fr)
WO (1) WO2009033303A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2130956A1 (fr) * 2008-06-03 2009-12-09 Kabushiki Kaisha Toyota Jidoshokki Cage de support de lanière pour métiers à filer
WO2011113744A1 (fr) * 2010-03-16 2011-09-22 Maschinenfabrik Rieter Ag Banc d'étirage avec table de guidage pour une lanière de guidage
EP2980286A1 (fr) * 2014-08-01 2016-02-03 Deutsche Institute für Textil- und Faserforschung Denkendorf Système de cylindre étireur d'un poste de travail d'une machine textile travaillant des fibres discontinues et machine textile en étant équipée
EP2573230A3 (fr) * 2011-09-21 2016-11-30 Murata Machinery, Ltd. Dispositif de traitement du support
EP3730681A1 (fr) 2019-04-26 2020-10-28 Saurer Intelligent Technology AG Système d'étirage à lanières
EP3730682A1 (fr) 2019-04-26 2020-10-28 Saurer Intelligent Technology AG Dispositif support pour un banc à étirer à courroies

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2898127B1 (fr) * 2012-09-24 2016-09-21 König, Reinhard Banc d'étirage à double pliage
CH708351A2 (de) * 2013-07-16 2015-01-30 Rieter Ag Maschf Streckwerk mit Faserführungselement.
JP6620726B2 (ja) * 2016-11-17 2019-12-18 株式会社豊田自動織機 紡機におけるドラフト装置
CN110710507A (zh) * 2018-07-11 2020-01-21 广东赛肯户外运动器械有限公司 一种渔轮及其具有复位功能的扳手式刹车系统

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DE4122881A1 (de) * 1991-07-11 1993-01-14 Schurr Stahlecker & Grill Riemchentisch fuer ein streckwerk
DE4221154A1 (de) * 1992-06-27 1994-01-05 Fritz Stahlecker Zwei-Riemchen-Streckwerk für Spinnereimaschinen
DE4227490A1 (de) * 1992-08-20 1994-02-24 Fritz Stahlecker Spinnmaschine mit Riemchenstreckwerken
DE19638190A1 (de) * 1996-09-18 1998-03-19 Zinser Textilmaschinen Gmbh Spinnereimaschinen-Streckwerk
DE102005008860A1 (de) * 2005-02-24 2006-08-31 Norbert Barauke Streckvorrichtung für Spinnmaschinen

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JPS534267Y2 (fr) * 1973-12-13 1978-02-02
JPS5623683U (fr) * 1979-07-31 1981-03-03

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DE4122881A1 (de) * 1991-07-11 1993-01-14 Schurr Stahlecker & Grill Riemchentisch fuer ein streckwerk
DE4221154A1 (de) * 1992-06-27 1994-01-05 Fritz Stahlecker Zwei-Riemchen-Streckwerk für Spinnereimaschinen
DE4227490A1 (de) * 1992-08-20 1994-02-24 Fritz Stahlecker Spinnmaschine mit Riemchenstreckwerken
DE19638190A1 (de) * 1996-09-18 1998-03-19 Zinser Textilmaschinen Gmbh Spinnereimaschinen-Streckwerk
DE102005008860A1 (de) * 2005-02-24 2006-08-31 Norbert Barauke Streckvorrichtung für Spinnmaschinen

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2130956A1 (fr) * 2008-06-03 2009-12-09 Kabushiki Kaisha Toyota Jidoshokki Cage de support de lanière pour métiers à filer
WO2011113744A1 (fr) * 2010-03-16 2011-09-22 Maschinenfabrik Rieter Ag Banc d'étirage avec table de guidage pour une lanière de guidage
US8695169B2 (en) 2010-03-16 2014-04-15 Maschinenfabrik Rieter Ag Drawing frame having a guide table for a guide apron
EP2573230A3 (fr) * 2011-09-21 2016-11-30 Murata Machinery, Ltd. Dispositif de traitement du support
EP2980286A1 (fr) * 2014-08-01 2016-02-03 Deutsche Institute für Textil- und Faserforschung Denkendorf Système de cylindre étireur d'un poste de travail d'une machine textile travaillant des fibres discontinues et machine textile en étant équipée
CN105316815A (zh) * 2014-08-01 2016-02-10 邓肯多夫德国纺织及纤维研究所 加工短纤维的纺织机工位的罗拉牵伸组件及纺织机
CN105316815B (zh) * 2014-08-01 2019-03-29 邓肯多夫德国纺织及纤维研究所 加工短纤维的纺织机工位的罗拉牵伸组件及纺织机
EP3730681A1 (fr) 2019-04-26 2020-10-28 Saurer Intelligent Technology AG Système d'étirage à lanières
EP3730682A1 (fr) 2019-04-26 2020-10-28 Saurer Intelligent Technology AG Dispositif support pour un banc à étirer à courroies
DE102019110880A1 (de) * 2019-04-26 2020-10-29 Saurer Intelligent Technology AG Trageinrichtung für ein Riemchenstreckwerk
DE102019110881A1 (de) * 2019-04-26 2020-10-29 Saurer Intelligent Technology AG Riemchenstreckwerk
CN111850751A (zh) * 2019-04-26 2020-10-30 卓郎智能技术有限公司 用于皮圈牵伸装置的承载机构

Also Published As

Publication number Publication date
JP2010539339A (ja) 2010-12-16
EP2198079A1 (fr) 2010-06-23
CN101868569B (zh) 2012-02-01
WO2009033303A1 (fr) 2009-03-19
CN101868569A (zh) 2010-10-20

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