EP0741808B1 - Steuerbare auslaufbremse, fadenliefervorrichtung sowie projektil- oder greiferwebmaschine - Google Patents

Steuerbare auslaufbremse, fadenliefervorrichtung sowie projektil- oder greiferwebmaschine Download PDF

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Publication number
EP0741808B1
EP0741808B1 EP95907619A EP95907619A EP0741808B1 EP 0741808 B1 EP0741808 B1 EP 0741808B1 EP 95907619 A EP95907619 A EP 95907619A EP 95907619 A EP95907619 A EP 95907619A EP 0741808 B1 EP0741808 B1 EP 0741808B1
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EP
European Patent Office
Prior art keywords
thread
brake
holding member
supporting ring
drive
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
Application number
EP95907619A
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German (de)
English (en)
French (fr)
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EP0741808A1 (de
Inventor
Lars Helge Gottfrid Tholander
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Iro AB
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Iro AB
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Filing date
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Publication of EP0741808A1 publication Critical patent/EP0741808A1/de
Application granted granted Critical
Publication of EP0741808B1 publication Critical patent/EP0741808B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/24—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick by gripper or dummy shuttle
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • D03D47/366—Conical
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • D03D47/365—Brushes

Definitions

  • the invention relates to a controllable outlet brake according to the Preamble of independent claims 1 or 2, a projectile loom according to the preamble of claim 12, and a rapier loom according to the preamble of the claim 13.
  • a controllable outlet brake on the storage drum of a thread delivery device is for projectile or rapier weaving machines known to limit the balloon when entering and a To allow thread control. It is the outlet brake on Very little strain on the thread starting at the beginning of the entry, especially with regard to the dreaded stroke and at sensitive thread qualities, possibly with low thread quality, and only during the entry the thread tension increase. However, this is exactly reproducible and quickly appealing, i.e. changes within a few milliseconds Braking effect required. These requirements have been around for more spout brakes known as 20 years in the modern Looms of this type are usually high thread speeds not satisfactorily.
  • An example is the end brake according to US-A-3 411 548, at the guide elements protruding outwards from the support ring into oblique slots of the crescent-shaped holding member engage.
  • the adjustment drive has a cam drive for rotating the Support ring around the drum axis and relative to the holding member. During the rotary movement, the support ring becomes dependent on the direction of rotation moved forward or backward through the slots to reduce braking to change in operation. Relatively large, quickly moving masses, energy-consuming movements, unstable end positions the support ring, etc., are reasons why this well-known Principle is not used in modern weaving machines.
  • Another outlet brake is from GB-A-13 55 518 for a projectile weaving machine known.
  • a rigid balloon cone is axially in the stationary holding member between a slight braking position and an open gap position can be moved back and forth.
  • An annular armature of a magnetic actuator is attached to the cone, against the cone when the coil is energized a return spring from the gap position to the braking position pulls.
  • Large moving masses, a relatively coarse or sluggish braking effect and a delayed response are reasons why this outlet brake in modern Weaving machines of this type are no longer used.
  • a modern controllable outlet brake according to the preamble of claims 1 and 2 is from FIGS. 6 and 7 WO91 / 14032 known.
  • the frustoconical support ring is in the inner circumferential surface of the annular holding member is mounted such that it can be tilted, and that in a formed from openings and webs, Line concentric to the axis of the storage drum. in the The tilting area is the support ring without any significant axial play set in the holding member.
  • the support ring has in both Tilt directions around the tilt line in the holding member more space Available as needed for its adjustment.
  • the free one inner end region of the thread braking element lies on the braking surface the storage drum under the action of a in the holding member behind the support ring, the actuator, e.g.
  • an inflatable or inflatable in the circumferential direction in the holding member running hose.
  • the hose is via the drive control with compressed air or another Medium more or less fillable and determines the tilt position of the support ring the size of the pressing force on the braking surface.
  • the resetting of the support ring in order to reduce the pressing force takes place via the elasticity of the thread braking element even because the actuator has only one direction of action.
  • the Tilting of the support ring is due to its truncated cone shape a deformation of the relatively dimensionally stable truncated cone and thus very high actuation forces on the part of the actuator. A controlled increase in pressure is therefore only has a delayed effect and its extent can hardly be predicted exactly.
  • the invention has for its object a controllable outlet brake and a projectile and a rapier weaving machine easy to design so that even at high thread speeds exact weft control is given, or to ensure that the controllable outlet brake the use the high possible in modern weaving machines of these types Thread speeds even with sensitive thread qualities enables.
  • the support ring is expediently linear and parallel to the axis the storage drum is moved by a sliding drive, to get to the new position quickly and exactly, in the thread braking element with the thread tension set in advance brakes or almost no braking effect causes.
  • Thread brake element The exact positioning of the cooperating with the braking surface Thread brake element is in a further embodiment made by means of the ring element, which thanks to the pneumatic actuation works quickly and in the release position can pull the thread largely unhindered. In the In the passive position, the ring element influences the braking function Not.
  • An embodiment is structurally simple in which the Tragring itself forms the piston that in one or in both Direction of movement is pneumatically applied while doing so is guided in the holding member.
  • piston-like ones can also be used Extensions on the support ring are used to determine the number of Keep parts as small as possible.
  • the at least one sliding drive body from the removal path of the thread brake element to remove it if it is worn and / or quick and easy to replace if necessary.
  • the removal side of the holding member expediently points to Front end of the storage drum, where unobstructed access is possible is.
  • Is the return spring in the at least one sliding drive body then it is particularly useful to arrange a support surface in the holding member such that when Swiveling the sliding drive body into the removal position the preloaded return spring automatically and in preloaded State is intercepted. After inserting a new one Thread brake element and swiveling back the sliding drive body the return spring returns automatically in their active position on the ring. In addition, when exchanging by the return spring supported on the support surface Sliding drive body locked locked.
  • the controlled outlet brake with a arranged in the support ring with an annular membrane an uninterrupted counter braking surface.
  • the membrane forms a built-in radially and axially elastic spring in the Thread braking element, resulting in a desirable self-compensation effect of the outlet brake, i.e. the thread tension only slightly with increasing thread speed or not increasing at all and therefore a relatively high one Basic thread tension can be set, which is the case with both Types of weaving machines in question here are the important ones Advantage that the previously often downstream Thread delivery device provided multi-disc brakes for increasing thread tension can be omitted, their influence in Stretching is undesirably strong.
  • the relatively high basic thread tension thanks to the pneumatically operated Sliding drives removed or eliminated when during no significant thread tension required for an entry is.
  • the thread braking element can also be a so-called Brush, tooth or lamellar ring with single or elastically deformable brake elements grouped in groups and a discontinuous circumferential braking surface be, its physical with increasing thread speed
  • Thread delivery device For projectile weaving machines and rapier weaving machines with this The drawing stroke can be equipped with the thread delivery device largely or even completely at the beginning of the entry avoid what sensitive thread qualities, e.g. Woolen or Cotton threads of inexpensive, low quality extraordinary is important because this is with modern weaving machines these types possible high thread speeds and without the high that was previously indispensable Thread breakage rate can be processed. There is also a more desirable one Cleaning effect with that used for drive control Compressed air in the thread delivery device because the relaxed or discharged compressed air removes fluff and impurities or not at all inside the thread delivery device lets get.
  • sensitive thread qualities e.g. Woolen or Cotton threads of inexpensive, low quality extraordinary is important because this is with modern weaving machines these types possible high thread speeds and without the high that was previously indispensable Thread breakage rate can be processed.
  • Thread breakage rate There is also a more desirable one Cleaning effect with that used for drive control Compressed air in the thread delivery device because the relaxed or discharged compressed air removes fluff and impurities or not at all inside the thread delivery device
  • a thread delivery device F of a type known per se a stationary storage drum 1 on which a plurality of thread turns 2a - 2n for Formation of an intermediate supply or a reserve of a thread Y can be wound up. That of a supply spool, not shown coming thread Y is through a hollow, by means of a Not shown electric motor drivable in a motor housing 3 Drive shaft of the thread delivery device supplied and by means of a hollow one, with the drive shaft for rotation drivable arm (not shown) on the storage drum 1 brought.
  • the thread delivery device F is between the one not shown Supply spool, from which the thread Y through the thread delivery device is processed, and a textile machine (not shown) arranged.
  • the textile machine is consuming the thread Y as a weft for weaving, knitting or around others Way to produce a textile product.
  • the string Y is entered by the weaving machine Storage drum 1 in the axial direction via a trigger edge 4 deducted the storage drum, which is preferably slightly rounded is, and runs downstream through a coaxial to the storage drum 1 axially arranged trigger eye 5.
  • a free-standing, controlled or alternatively non-controlled thread brake (not shown) be performed, and / or by a thread take-up device (take-up device).
  • take-up device take-up device
  • a carriage (not shown) axially slidably arranged, the an annular holding member 7th for an OYB outlet brake.
  • the annular holding member 7 carries a thread braking element in FIGS. 1 and 2 8, recently on the market under the name "Flexbrake” was introduced and essentially a truncated cone Circular ring or a frustoconical band made of elastic material, preferably rubber. Because of the training and arrangement forms the annulus of the Thread brake element 8 an uninterrupted in the circumferential direction or continuous investment line or investment area for investment against the rounded trigger edge 4 of the storage drum 1.
  • the Trigger edge 4 also forms a rotationally symmetrical Braking surface 4 'for a counter braking surface or counter braking line defining contact line of the circular ring 8.
  • the circular ring of the thread brake element 8 is on its inner, "Braking active" inner area 8a with a thin Cover made of a material that is resistant to thread friction provided, for example from a metal or a metal alloy, expediently a stainless steel or one Beryllium copper alloy.
  • the brake-active interior or the coating of the thread brake element 8 is characterized due to considerable axial stiffness and remarkable Flexibility or elasticity in the radial direction and due to preferably low inertia (mass).
  • the annulus of the thread braking element 8 is in its the annular holding member 7 assigning area with or in a central section 8b with one or more circumferential "corrugations" formed to increase the elasticity of the middle section 8b increase.
  • the central region 8b of the thread braking element 8 is attached in a support ring 9 inside, which in turn from annular holding member 7 is included.
  • An operator can select the axial position determine the force of the carriage (not shown) in the boom 6, with which the thread braking element 8 on the trigger edge 4 (or the braking surface 4 ') of the storage drum 1 is present. The operator can thereby create a "basic tension" the thread Y receives when it is pulled off from the storage drum 1 between the brake-active inner area 8a of the thread braking element 8 and the rounded Trigger edge 4 passes through.
  • the new type of runout brake has in particular to provide of favorable thread tension conditions during each Entry process in a weaving machine is very advantageous and proven positive properties.
  • This outlet brake has a self-compensation effect insofar as the Tension in the thread downstream of the outlet brake with increasing Thread speed does not increase appreciably.
  • the thread braking element 8 arranged so that it can be moved in a controlled manner in the axial direction is such that its brake-active inner area is a Number of, expediently two, positions in relation can take to the rounded trigger edge 4.
  • the thread braking element is arranged so that there is a first axial position (corresponding to Fig. 1) occupies in which its brake-active interior "normal” with a certain, preselected force against the trigger edge 4 (or the braking surface 4 ') is present. This force is predetermined by the axial position of the carriage (not shown). A certain, preselected result results from this force Tension in the thread.
  • the thread braking element is also so arranged that there is a second axial position (as shown in FIG. 2) is able to occupy, in which the brake-active inner area 8a of the thread braking element 8 is "released" from the trigger edge 4, i.e. is no longer in contact with the trigger edge 4.
  • the controlled axial displacement of the thread brake element 8 can be implemented in several ways.
  • the support ring 9 axially within the holding member 7 arranged movably, for example by selecting its Extent in the axial direction.
  • a first pneumatic cylinder 10 with a piston 10a is provided to with the rear end face or the rear edge of the support ring 9 to cooperate.
  • a second pneumatic cylinder 11 with a piston 11a is provided to be in contact with the front face or the front edge of the support ring 9 and one Base part 8c of the thread braking element 8 cooperate.
  • the first cylinder 10 is directly connected to a compressed air source CAS connected, whereas the second cylinder 11 with the same Pressure source via a three-way solenoid valve 12 of a known Construction is connectable.
  • a control unit (not shown) is electrically connected to the Valve 12 connected and suitably designed so that it controls the valve 12 synchronously with the textile machine, which is supplied by the thread delivery device F. That is, that in the case of a weaving machine, the control is synchronous with the Weaving cycle takes place, preferably in accordance with a desired appropriate thread tension during respect Phases of the weft insertion cycle, such as the acceleration phase, the "flight phase", the delay phase, etc.
  • the stroke of the axial displacement movement of the thread brake element 8 with its support ring 9 need not be more than be a few millimeters to get the function you want or to get the result.
  • the time for "switching" or moving the thread brake element between its Working positions can be in the described embodiment is approximately 10-15 milliseconds.
  • the axial displacement of the thread brake element 8 could different ways, e.g. by means of electromagnets or solenoids that attack directly on the carrier ring 9, or alternatively by means of displacement devices with piezo crystal elements can be controlled (since the necessary switching movement is so small), or with other known types linear adjustment devices.
  • FIG. 3 is different Embodiment of a pneumatically operated outlet brake OYB in the holding member 7 on the boom 6 of the thread delivery device intended.
  • the axial basic setting of the holding member 7 and thus the basic setting of the thread tension when the outlet brake is engaged by a with the holding member 7 connected slides 22 selected in guides 24.
  • the carriage can be moved by means of an adjusting member 23; however, it is stationary during operation.
  • the holding link 7 is to the removal side E (to the front end of the storage drum 1) open and shows recordings distributed over the scope 16 for sliding drive body 14, either together or individually between a stop position (in extended position Lines drawn) and a removal position (in 5 indicated by dashed lines) can be moved back and forth, preferably around a retaining screw parallel to the axis 15.
  • each sliding drive body engages behind 14 the support ring 9 of the thread braking element 8 ', which in 3 - 5 a so-called bristle ring with flexible bristles or tufts of bristles that are preferably oblique inclined front support ring 9 extend inwards and an elastic deformable middle section 8b 'and an inner Define the brake-active inner area 8a 'as the counter-braking surface cooperates with the braking surface 4 'at the trigger edge 4.
  • the holding member 7 are two oppositely acting Sliding drives 10 ', 11' arranged.
  • the sliding drive 10 ' contains the piston in a sliding guide or chamber 12 ' 10a ', for the purpose of better sealing and clean Guide is guided in a sliding sleeve 13 and from the pneumatic drive control 12 (see Fig. 1) with compressed air can be acted upon or relieved.
  • a first ring contact area 20 which in the axial direction a contact area 21 on the sliding drive bodies 14 is opposite.
  • the Piston 10a ' can be extended via the first contact area 20.
  • each sliding drive body 14 there is an axially arranged one Return spring 19 salvaged in a recess, which, preferably, applied to the support ring 9 via a piston-like sleeve 18.
  • the return spring 19 is biased and over the second system area 21 extendable.
  • the recording 16 for the Sliding drive body 14 is dimensioned so large that the sliding drive body 14 after rotation around the retaining screw 15 the removal path of the support ring 9 is moved out. After twisting the thread braking element of all sliding drive bodies 14 Lift out 8 'to removal side E and through new or another thread braking element (such as the thread braking element 8 according to Fig. 1) replace.
  • Thread brake elements that can be used are so-called toothed rings, the elastic teeth projecting inwards in the support ring 9 made of plastic or another material (similar to one annular comb), or a multi-disc brake ring, the In the support ring 9 inwardly protruding sheet metal or plastic lamellae wearing.
  • the aforementioned Thread brake elements have approximately the same outside diameter of the support rings 9, they can be optionally against each other replace.
  • a support surface 17 for the return spring 19 provided, in such a way that they are about the height of the rear face of the support ring 9 is when this is pressed onto the first contact area 20.
  • This operating position is indicated in Fig. 4.
  • each sliding drive body 14 is in the holding position secured by tightening the retaining screw 15. But it would be also conceivable to provide an automatically acting latching here. It is also possible to move the support ring 9 between the first and second investment areas 20 and 21, e.g. by inserting or removing of washers between the slide drive body 14 and the holding member 7. There could also be two pneumatically acted upon pistons as provided in Figs. 1 and 2 his.
  • the storage drum 1 of the thread delivery device F serve the sliding drives 10 "and 11" for axial displacement one concentric to the axis of the storage drum 1 Ring element 27, the elastic with a sliding end 28 deformable middle section 8b 'of the thread braking element 8' (here a bristle ring) radially inside the support ring 9 acted upon directly.
  • the support ring 9 is stationary in the holding member 7 fixed, for example by means of a Easily removable circlip 26.
  • the two sliding drives 10 '' and 11 '' are combined, i.e.
  • the Piston 10a '' in the sliding guide 12 ' engages the ring element 27 by means of a piston rod 29, which at 30 with the Ring element 27 can be coupled while the return spring 19 'is arranged on the piston rod 29 and against one Stop at the end of the sliding guide 12 'works.
  • Means of the piston 10a ′′ is the ring element 27 in FIG shifted to the right up to a stop in the holding member 7, once the piston 10a '' from the pneumatic, not shown Drive control is pressurized with compressed air.
  • the Return spring 19 'the piston 10a' 'back, over the Piston rod 29, the ring member 27 also withdrawn is, expediently against a second stop of the holding member 7. In the position shown in Fig.
  • controllable outlet brake OYB disengaged, i.e. the brake active Inner area 8a 'is only essentially weak or no longer at all on the braking surface 4 'of the trigger edge 4 on.
  • the middle section 8b ' is axial relative to the support ring 9 deformed.
  • the Return spring 19 'the ring body 27 back until the brake active Inner area 8a 'with the by the position of the carriage 22 preselected force is applied to the braking surface 4 '.
  • the Return spring 19 'could also be on the right side of the ring element 27 are arranged so that the piston 10a '' directly attacks on the ring member 27. It could also be for both Movement directions of pneumatically actuated pistons as in Fig. 1 can be used. It would also be the other way round of the piston 10a '' and the return spring 19 'possible.
  • the thread braking element 8 'with the bristles could a Flexbrake brake element 8 according to FIGS. 1 and 2 or a Toothed ring or a lamellar ring can be used.
  • FIG. 7 forms the support ring 9 in the holding member 7 at the same time Piston K of the pneumatic sliding drive 10 '.
  • the return spring 19 is either as in FIGS. 3 to 6 in one Sliding drive body 14 of the sliding drive 11 'for the other Direction of movement housed, or - as shown - in a recess of the support ring 9 so that a tab-like Projection 33, about an axis 34 in the holding member 7 to the side is pivotable, can be used.
  • the support ring 9 is directly from the pneumatic drive control 12 with compressed air pressurized, possibly over several distributed inlets.
  • the first investment area is inside one Annular chamber 32 of the holding member 7.
  • the annular chamber 32 forms internal and external sealing areas 35 with the support ring 9.
  • a kind of piston ring seal is provided, which are also provided for the pistons 10a, 11a and 10a ′′ and 10a ′ could be to keep compressed air leakage low and a consistently low displacement resistance of the respective Ensure piston.
  • 7 is again a Bristle brake ring shown as the thread brake element 8 '.
  • the individual bristles are labeled Q, those with their inner sides the brake-active interior area and thus a Define counter braking surface L.
  • it could also be a Flexbrake thread brake element 8 or a toothed ring or a disk ring be used for the same purpose.
  • the thread brake element 8 is a Flexbrake thread brake element 1 and 2 with an annular or frustoconical Membrane M made of rubber or an elastic Elastomer containing at least one circumferential corrugation W, which have their elasticity and suspension properties in radial and axial direction increased.
  • an annular or frustoconical Membrane M made of rubber or an elastic Elastomer containing at least one circumferential corrugation W, which have their elasticity and suspension properties in radial and axial direction increased.
  • the counter braking surface L for defines the braking surface 4 'of the trigger edge 4.
  • the brake pad H consists of a thread friction resistant Material, e.g. stainless steel or a copper-beryllium alloy and is relatively stiff in the axial direction, however in the radial direction, however, remarkably elastic.
  • another thread braking element can be used instead of the thread braking element 8 another thread braking element can be used.
  • a projectile weaving machine MP is schematic and indicated with only one thread delivery device F.
  • the thread delivery device F is aimed at the shed S and in Distance from it fixed.
  • the thread Y comes from one not shown supply spool and is on the storage drum the thread delivery device in sufficient quantity cached and by the controlled outlet brake OYB deducted in the holding member 7.
  • a stationary thread eyelet be provided, behind which there is a controlled thread brake B is located.
  • the controlled thread brake B is controlled by a control unit CP the projectile weaving machine MP controlled and possessed depending on the web cycle possibly its own control unit C, the one Drive D controls.
  • the control unit CP and / or the controller C is via line 40 to the pneumatic drive control 12 connected to the outlet brake OYB, such that the outlet brake OYB is roughly synchronized with the controlled one Thread brake is opened or closed.
  • the pneumatic drive control 12 (the solenoid valve the drive control 12) via its own control line 39 be connected to a sensor 38 which is connected to the one with the Main shaft 36 of the MP projectile loom rotatable encoder 37 is aligned to depending on the angle of rotation of the Main shaft 36 the commands to release or engage and also tap the times over which the OYB run-out brake loosened or indented.
  • the controlled outlet brake OYB expediently becomes something prematurely indented to relax or sag Y thread between the controlled thread brake and the thread delivery device F to prevent or balloon formation suppress. It is important that the controlled outlet brake OYB is indented quickly so that it can be one hand for the thread control works correctly, but on the other hand one Excludes projectile flight delay.
  • FIG. 11 illustrates the procedure for an entry.
  • the horizontal axis of the graph is the angle of rotation for one Revolution of the main shaft 36 of the projectile weaving machine MP, while the vertical axis the thread tension (cN) or represents the switching voltage (V) for the solenoid valve.
  • the curve 42 symbolizes the course of the thread tension, while curve 46 releasing and engaging and represents the sections of the angle of rotation over which the Outlet brake is engaged or released.
  • the weft insertion begins at, for example, 110 °.
  • the thread tension rises to a certain level once the projectile P accelerates and then runs approximately uniformly, up in a curve area 43 due to the controlled thread brake B the thread tension level first increases and then drops when the projectile P comes to a standstill and returns.
  • Fig. 10 is a rapier weaving machine MR with only a thread delivery device F shown.
  • an entry device serve a bringer gripper he BG and a slave gripper NG, which has a drive device 41 and a central Control unit CP are motion-controlled, such that they the Thread Y from one side of the shed S to the other side of the shed.
  • the bringer gripper BG hands over the Thread in a transfer area Ü to the gripper NG, the the thread is completely transported through the shed S.
  • the Control unit CP is expedient with the pneumatic Drive control 12 of the controllable outlet brake OYB in Holding member 7 of the thread delivery device connected to the controlled Runout brake OYB closed several times during each entry loosen or indent.
  • FIG. 12 In the diagram of Fig. 12 is again on the horizontal axis the rotation of the main shaft of the rapier weaving machine MR applied from 0 ° to 360 °.
  • the vertical axis represents the thread tension (cN) or the switching tension (V) for the solenoid valve of the pneumatic drive control 12.
  • cN thread tension
  • V switching tension
  • the thread tension increases due to the acceleration the gripper on.
  • the curve section is created in the transfer area 50 with low thread tension level.
  • the controlled outlet brake OYB shortly before the start of the entry (represented by 53) is resolved, none Multi-disc brake is required, and the thread delivery device can be arranged very close to the shed (space saving), the stretching stroke 44 can be considerably minimized or completely eliminate them.
  • the outlet brake OYB may only be solved immediately before the start of the thread Y not to leave yourself alone or relax beforehand allow. In the transfer area Ü from the grabber to the Slave gripper is required for a perfect thread transfer, to build a certain tension. To this Purpose is (represented at 54 of curve 52 of the switching signal for the pneumatic drive control) the controlled Outlet brake OYB engaged and during the transfer phase quickly after the handover phase (represented by 55) before it represents (before the end of the entry process by 56).
  • the rapier weaving machine MR comes without arranged permanently downstream of the thread delivery device F. acting brakes that negatively affect the voltage curve would (stretch stroke and high peak areas 51).
  • the solenoid valve of the pneumatic drive control 12 housed inside the motor housing 3 protected and the supply lines are hidden.
  • the solenoid valve leaves the one that is fed to act on the pistons Flow off compressed air directly when switching, namely expediently inside the motor housing to this through an overpressure effect or a dynamic flow Prevent contamination and lint from entering. It is even a targeted compressed air routing possible to critical Areas (the electronic components) in the motor housing or the sensor devices usually provided to keep clean or to clean or to cool in general.
  • all pneumatically operated sliding drives are sufficient jointly supplying or relieving solenoid valve out.
  • the pistons, the holding member 7 and any sliding guides of the sliding drives can be made of metal.
  • the support ring 9 the thread braking element is expediently a plastic part, which is shaped in such a way that it is dimensionally stable at the lowest mass is.
  • the braking surface 4 ' is either in the range Trigger edge 4 of the storage drum arranged, or at the so-called front cone or nose part of the storage drum.
  • the braking surface and the counter braking surface work on a diameter of the storage drum together, which is slightly smaller than the diameter on which the thread turns 2a - 2n are.
  • the second case it is Diameter on which the braking surface with the counter braking surface works together, smaller than in the first case.
  • the controller in the controllable outlet brake OYB depending on the course of the entry preference is given. But it is also conceivable control by means of a microprocessor, anyway in the control unit of the thread delivery device is in place to provide a program with exact for this purpose Predeterminable chronological sequence of triggering and engagement the outlet brake with every entry.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Prostheses (AREA)
EP95907619A 1994-01-26 1995-01-26 Steuerbare auslaufbremse, fadenliefervorrichtung sowie projektil- oder greiferwebmaschine Expired - Lifetime EP0741808B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9400248A SE9400248D0 (sv) 1994-01-26 1994-01-26 Styrbar utgångsbroms för garnmatningsanordning till textilmaskiner, i synnerhet vävmaskiner av projektil eller gripar-typ
SE9400248 1994-07-15
PCT/EP1995/000284 WO1995020700A2 (de) 1994-01-26 1995-01-26 Steuerbare auslaufbremse, fadenliefervorrichtung sowie projektil- oder greiferwebmaschine

Publications (2)

Publication Number Publication Date
EP0741808A1 EP0741808A1 (de) 1996-11-13
EP0741808B1 true EP0741808B1 (de) 2000-07-12

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EP95907619A Expired - Lifetime EP0741808B1 (de) 1994-01-26 1995-01-26 Steuerbare auslaufbremse, fadenliefervorrichtung sowie projektil- oder greiferwebmaschine

Country Status (11)

Country Link
US (1) US5778943A (sv)
EP (1) EP0741808B1 (sv)
JP (1) JPH09508182A (sv)
KR (1) KR100371989B1 (sv)
CN (1) CN1040676C (sv)
CZ (1) CZ288320B6 (sv)
DE (1) DE59508564D1 (sv)
ES (1) ES2149967T3 (sv)
RU (1) RU2135657C1 (sv)
SE (1) SE9400248D0 (sv)
WO (1) WO1995020700A2 (sv)

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DE19533310A1 (de) * 1995-07-24 1997-01-30 Iro Ab Fadenliefergerät
CN1076706C (zh) * 1995-07-24 2001-12-26 Iro有限公司 导纱器
DE19542045A1 (de) * 1995-11-10 1997-05-15 Iro Ab Fadenliefergerät
DE19609871A1 (de) * 1996-03-13 1997-09-18 Iro Ab Fadenliefergerät
DE19612720A1 (de) * 1996-03-29 1997-10-02 Iro Ab Fadenliefergerät
SE9700666D0 (sv) * 1997-02-24 1997-02-24 Iro Ab Fadenliefergerät und fadenbremse
DE19919122A1 (de) * 1999-04-27 2000-11-02 Iro Patent Ag Baar Aktuator und Fadenbremse mit einem Aktuator
NL1018600C2 (nl) * 2001-07-20 2003-01-21 Te Strake Bv Weefmachine.
ITTO20010737A1 (it) * 2001-07-25 2003-01-25 Lgl Electronics Spa Metodo e sistema perfezionati di controllo dei dispositivi frenatramaelettrocomandati per la regolazione automatica della tensione meccanic
DE10153326A1 (de) * 2001-10-29 2003-05-08 Iropa Ag Fadenverarbeitendes System
DE102005007842A1 (de) * 2004-11-05 2006-05-11 Iro Ab Fadenbremsvorrichtung
EP1811068B1 (de) * 2006-01-24 2009-06-17 Sultex AG Gesteuerte Fadenbremse
JP4955325B2 (ja) * 2006-07-11 2012-06-20 津田駒工業株式会社 織機のロールの支持装置
EP2058423A1 (en) * 2007-10-10 2009-05-13 Iro Ab Weaving machine, yarn feeder and method for inserting a weft yarn
EP2169099A1 (en) * 2008-09-25 2010-03-31 L.G.L. Electronics S.p.A. Negative yarn feeder with weft-braking device
DE202009017125U1 (de) * 2009-12-18 2010-04-15 Flexi-Bogdahn Technik Gmbh & Co. Kg Bremseinrichtung für eine Seilrolle einer mechanisch auf- und abrollbaren Leine zum Führen von Tieren
JP5804306B2 (ja) * 2011-02-07 2015-11-04 村田機械株式会社 糸貯留装置及び糸巻取機
ITTO20111218A1 (it) 2011-12-28 2013-06-29 Lgl Electronics Spa Alimentatore di filato a tamburo fisso con dispositivo frena-trama controllato
ITTO20111217A1 (it) * 2011-12-28 2013-06-29 Lgl Electronics Spa Dispositivo frena-trama per alimentatori di filato a tamburo fisso
CN105951280B (zh) * 2016-07-07 2018-04-13 安徽省兰飞化纤织造有限公司 一种织造筛网的片梭织机
CN106435962B (zh) * 2016-11-18 2018-01-16 浙江三禾智能科技有限公司 一种储纬器恒力式的快速调节装置
DE102018115604A1 (de) * 2018-06-28 2020-01-02 Memminger-Iro Gmbh Fadenliefergerät

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CH523196A (de) * 1970-05-14 1972-05-31 Sulzer Ag Speichereinrichtung für fadenartiges Material
CH669804A5 (sv) * 1986-05-15 1989-04-14 Sulzer Ag
EP0855358B1 (en) * 1990-03-12 2001-10-17 Iro Ab Yarn feeder
IT1251209B (it) * 1991-09-20 1995-05-04 Lgl Electronics Spa Dispositivo di frenatura autoregolante del filato per apparecchi alimentatori di trama.
DE69223575T2 (de) * 1991-09-20 1998-04-16 Lgl Electronics Spa Selbstregulierende Fadenbremse für eine Schussfadenliefervorrichtung
IT1259551B (it) * 1992-04-22 1996-03-20 Lgl Electronics Spa Dispositivo elettropneumatico per l'infilaggio automatico di apparecchi alimentatori di trama a macchine tessili ed apparecchio alimentatore di trama incorporante detto dispositivo
DE4219306A1 (de) * 1992-06-12 1993-12-16 Iro Ab Verfahren und Vorrichtung zum Liefern von Schußfäden
IT1268111B1 (it) * 1994-10-10 1997-02-20 Lgl Electronics Spa Dispositivo di frenatura modulata positiva del filato, per apparecchi alimentatori di trama
US5546994A (en) * 1994-10-14 1996-08-20 Sobrevin Societe De Brevets Industriels-Etablissement Thread storage drum with frustoconical brake strip

Also Published As

Publication number Publication date
CN1040676C (zh) 1998-11-11
JPH09508182A (ja) 1997-08-19
WO1995020700A2 (de) 1995-08-03
KR970700794A (ko) 1997-02-12
ES2149967T3 (es) 2000-11-16
EP0741808A1 (de) 1996-11-13
WO1995020700A3 (de) 1995-09-14
US5778943A (en) 1998-07-14
CZ288320B6 (en) 2001-05-16
CN1139963A (zh) 1997-01-08
DE59508564D1 (de) 2000-08-17
RU2135657C1 (ru) 1999-08-27
CZ218396A3 (en) 1997-01-15
SE9400248D0 (sv) 1994-01-26
KR100371989B1 (ko) 2003-03-19

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