CN102152997B - Yarn tensioner - Google Patents
Yarn tensioner Download PDFInfo
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- CN102152997B CN102152997B CN 201110034641 CN201110034641A CN102152997B CN 102152997 B CN102152997 B CN 102152997B CN 201110034641 CN201110034641 CN 201110034641 CN 201110034641 A CN201110034641 A CN 201110034641A CN 102152997 B CN102152997 B CN 102152997B
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- 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
- B65H59/24—Surfaces movable automatically to compensate for variation in tension
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- 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
- B65H59/26—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path
- B65H59/28—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path the surfaces being urged towards each other
- B65H59/30—Surfaces movable automatically to compensate for variation in tension
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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
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
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- 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
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Abstract
In a yarn tensioner T comprising a series of rigid yarn deflecting elements 1 commonly defining a yarn path P, the yarn deflecting elements being distributed with interspaces in-between on both opposite sides of the yarn path such that a respective yarn deflecting element is located at one side with an offset in yarn run direction D relative to a yarn deflecting element 1 located at the opposite side, at least one yarn deflecting element 2a, 2b being adjustable substantially perpendicularly to the yarn path in order to vary the tensioning effect in an operative condition of the yarn tensioner, the yarn path P is lined between the yarn deflecting elements 1, 2 by at least one thin walled flexible spring leaf 8a, 8b per side of the yarn path P, the spring leaves being biased towards each other by the deflecting elements, such that one respective spring leaf 8a, 8b is supported at one location of the yarn path P at a deflecting element while the other respective and parallelly arranged spring leaf is free at the same location of yield perpendicularly to the yarn run direction D away from the one spring leaf, the spring leaf 8a, 8b being markedly longer in yarn run direction D than the distance occupied by the series of yarn deflecting elements 1, 2 with the longitudinal free end of the spring leaves being distant in yarn run direction from the respective first yarn deflecting element.
Description
Technical field
The present invention relates to a kind of according to claim 1 yarn tensioner as described in the preamble.
Background technology
In the yarn tensioner known by US 5738295A, thread path is determined by four on thread path one side fixing rigidity deflecting elements and three rigidity deflecting elements on the thread path opposite side, so that thread path has the structure of zigzag.Three deflecting elements on the thread path opposite side can be regulated perpendicular to the yarn direct of travel usually, to change the tensioning effect by changing around the deflection angle of deflecting element.The yarn of advancing only by the friction force braking, depends on whole angle of inclination and the friction coefficient between yarn and deflecting element.Yarn tensioner has to produce tensile force in yarn, this tensile force can accurately be regulated and will remain on relatively consistently setting value.Yet as long as the yarn of advancing comprises knot, winding or irregular, when tying-in was crossed yarn tensioner and skipped deflecting element, the yarn tensile force will change seven times tempestuously.This effect can cause yarn breakage or meeting so that through just regaining for a long time the yarn tensile force value of initial setting.
EP 1072707A has announced a kind of similar yarn tensioner, and this yarn tensioner is altogether with seven deflecting elements with for the linear motor of regulating the tensioning effect, to reach predetermined variable tensioning route in the cycle period of inserting loom.The tensioning effect depends on that yarn centers on the wrapping angle of deflecting element and changes with the exponential function of the size of wrapping angle.This allow to reach relatively high yarn tensile force as for heavy yarn qualities (heavy yarn quality) as for example synthetic yarn or needed for the production of the ribbon of gas cell fabric.Yet as long as the knot in yarn, winding or irregular process yarn tensioner, relatively high yarn tensile force and the large deflection of yarn cause violent tensile force to change inevitably.Afterwards, yarn tensioner can not enough promptly be set, and regains initial yarn tensile force, means yarn breakage or the yarn tensile force of setting disappearance a very long time occur.
US 5363883A and US 4641688A have respectively announced a kind of yarn tensioner, are commonly referred to blade tensioner.Yarn tensioner has a pair of spring leaf pivotally to be supported on respectively the entrance point of opening of yarn tensioner, and two spring leafs have elastic force ground to press each other.Yarn directly passes through blade tensioner and is sandwiched between the spring leaf.Yet because the yarn effect that produces only depends on thrust and friction coefficient between the spring leaf, maximum yarn tensile force is relatively very low and be inadequate for heavy yarn qualities.If take the tensioning effect of maximum as target, spring leaf presses tightly relative to each other very much, yarn tensioner do not admit of easily through knot, winding or irregular but can not make spring leaf fast enough separately the time when the thump of knot, tend to cause yarn breakage.
EP 0622485A discloses a kind of blade tensioner, and this blade tensioner has a pair of spring leaf, and spring leaf is bent for this so that their convex side is adjacent one another are.Vertically hold for two of each spring leaf and be stuck in the groove.In the situation of heavy yarn qualities, need relatively high but constant yarn tensile force, have to spring leaf is pressed against together relative to each other very securely, so that yarn tendency knot, winding occur or cause yarn breakage when irregular in yarn, because yarn tensioner can not be crooked.
US 2001/0022201A discloses a kind of yarn tensioner of blade tensioner type.Two spring leafs are pressed against each other through the clamping surface of the convex bending of the yarn of yarn tensioner by being used for.Although the vertical end energy of at least one of spring leaf free bend, yarn tensioner is used for high tensile force if set, just in case tying-in is crossed enough easily bendings.
EP 1811068A discloses a kind of yarn tensioner of mixed type, this yarn tensioner by be fixed on two vertically on the end can be crooked spring and be pressed against rigidity deflecting element work on the side of spring leaf with the plane brake area.Be used for strong tensioning effect if set yarn tensioner, yarn tensioner can not be in the out-of-date bending of tying-in.
At last, EP 1786715A has announced a kind of for example affined yarn tensioner, this yarn tensioner or comprise a pair of spring leaf that is pressed against each other partly perhaps comprises the plane brake area of a spring leaf and fixed static, and spring leaf is pressed on this brake area partly.In described embodiment with a pair of spring leaf, static spring leaf perpendicular to the yarn direct of travel be spring loaded and opposite spring leaf leans against on the attachment point partly.Yarn tensioner is designed for heavy yarn qualities especially, when for example in loom or in other yarn treatment machines, processing, this heavy yarn qualities needs relatively high yarn tensile force, and additionally be designed for make in yarn inevitably tie, winding or irregular process, and can not cause yarn breakage and very rapidly rebulid the yarn tensile force of setting in tying-in later.Yet, set and change gradually the task that high yarn tensile force is a difficulty for this yarn tensioner type.
Summary of the invention
The purpose of this invention is to provide a kind of yarn tensioner simple in structure, this yarn tensioner allows accurately to set and the tensile force that changes gradually in the yarn of advancing, to allow the knot in the yarn, twine or irregular process, and yarn breakage dangerous minimum but simultaneously knot or analogue through after can very rapidly rebulid the yarn tensile force of setting, and, especially, can be at dissimilar machine photo looms, rapier loom and other yarn treatment machines weigh yarn qualities as processing reliably in wire coiling machine or the wrapping machine, even when turning round with relatively constant yarn speed.In other words, be intended to provide heavy yarn tensioner, be used for comprising inevitably the heavy yarn qualities of accidental knot or analogue, yarn tensioner even being used for the work that arranges of high yarn tensile force so that knot through occuring smoothly and the process of knot causes relatively low tensile force peak value.
Described purpose is achieved by the feature of claim 1.
Yarn tensioner is the combination of deflection tensioner and blade tensioner, mean the yarn of advancing along thread path through repeatedly deflection and be clipped between the spring leaf in the very long scope of thread path of yarn tensioner.Yarn tensioner allows to set up relatively high yarn tensile force, although the load of the ratio tensioning on the unit length of yarn on the thread path of yarn tensioner keeps relatively low.In the knot of yarn, winding or obvious irregular through in the situation of yarn tensioner, yarn tensioner is only opened by knot at the present position place of knot and the other parts of yarn tensioner tensioning yarn still.Obstruction keeps low as desired with the resistance that knot is pulled through yarn tensioner, that is, generation and the tensile force peak value in yarn are very low relatively smoothly for the process of knot.Knot not only can be separated from each other two spring leafs in the position except the position of the deflecting element of support spring sheet, but also can a spring leaf be removed from another in the position of deflecting element.The yarn tensile force that produces depends on several deflections of spring leaf and the clamping friction force along long clamping region between spring leaf.Because vertically the end extension is relatively far away for two of spring leaf, corresponding the first deflecting element that exceeds a series of deflecting elements, knot can more easily enter and leave yarn tensioner, make Spring deformation because only need overcome there the elasticity of spring leaf, and the additional tensioning effect of deflecting element begins at first after a while to work or finish.This makes the dangerous minimum of yarn breakage and has positive secondary effect so that the yarn tensile force little by little rises when tying-in is crossed yarn tensioner and descends, that is, the yarn tensile force descends never fully.Thus, according to yarn tensioner of the present invention, be particularly suitable for processing the heavy yarn qualities of yarn tensile force that need to be relatively high.This may for example be synthetic threads or for the manufacture of the cotton of the specification Ne16 of the ribbon of gas cell fabric or the maximum yarn tensile force of for example advancing with speed 500m/min, need about 100cN.Although yarn tensioner perfectly performance can realize by a pair of spring leaf, in the embodiment that substitutes, can provide more than a spring leaf in each side of thread path, it is shorter than innermost spring leaf on that side of thread path that spring leaf has the spring leaf in identical length or each outside.
In a kind of preferred embodiment, spring leaf is released in the zone in import and exit region at least, with promote spring leaf vertically between the free end and the part between corresponding the first deflecting element towards with away from each other bending.This set guarantees that knot enters and when leaving yarn tensioner, the yarn tensile force rises smoothly and descends smoothly.Preferably, when knot leaves yarn tensioner, and when yarn kept tensioning along the other parts of yarn tensioner, the described part of spring leaf was easily crooked in the exit region of yarn tensioner.
Preferably, spring leaf is held to avoid relative yarn deflecting element to move at the yarn direct of travel so that spring leaf not at the deflecting element place along their relative position of yarn going direction changing, even do not change in that tying-in is out-of-date yet.Yarn tensioner preferably has fixing holding element, with the vertical end at import or exit region, more preferably, in vertical end of the entry zone of yarn tensioner, combined action.At last, spring leaf should form funnel shaped upstream and the import downstream and exit region, is beneficial to knot and enters and leave.
Although deflecting element can be is at random distributed along the scope of the part of the thread path that is occupied by deflecting element, deflecting element preferably alternately is arranged on the both sides of thread path, preference rule ground arranges, so that two Spring deformations become regular cranky structure or wave-like.
In order to reach relative high and constant yarn tensile force by the combination that clamps tensioning effect and deflection tensioning effect, in a preferred embodiment, and under the mode of operation of yarn tensioner, deflecting element becomes cranky linear structure with Spring deformation.Deflecting element so that they are created in the relatively long clamping region that forms between two spring leafs with the setting of Spring deformation, mean in the other parts of the out-of-date yarn of tying-in will be still clamped and be tensioned and only tie and partly spring leaf is separated.
In a kind of preferred embodiment, a series of deflecting elements comprise at least two deflecting elements in each side of thread path, preferably have two and have three at opposite side in a side, all deflecting elements are supported on the spring leaf of a pair of identical size in the middle of them jointly.
In order to realize " gentle " response characteristic at import and exit region, in a kind of alternative embodiment along the distance of yarn direct of travel between the vertical free end of spring leaf and corresponding the first deflecting element greater than the spacing between deflecting element.
In a kind of embodiment simple in structure, deflecting element is arranged in the groove of tensioner base portion.In order to promote the change of yarn tensioner performance, even advantageously, at least one tensioner base portion has the more groove of the deflecting element that arranges than that side at described thread path, and groove is distributed in the yarn tensioner base portion on the yarn direct of travel regularly or brokenly.Groove allow to change being oppositely arranged between the deflecting element of both sides, changing as required the gap between deflecting element, and/or changes the quantity of the deflecting element on each side of thread path.
In a kind of favourable embodiment, at least one tensioner base portion has fabricated section, is used for regularly vertical free end of mounting spring sheet.Fabricated section, preferably, be arranged in the entry zone of yarn tensioner and perpendicular to the yarn direct of travel than the deflecting element on the thread path both sides further by separately.Fabricated section keep-spring sheet is fixed with respect to deflecting element on the yarn direct of travel, so that spring leaf can more easily move to deflecting element at the yarn tensioner on period.In addition, vertical free end of fabricated section keep-spring sheet separately is beneficial to knot and enters yarn tensioner.
In another embodiment, elastomeric spring leaf damper can be arranged at least exit region near, preferably on a tensioner base portion.The spring leaf damper can work with a spring leaf one, with the vertical free end on corresponding second of a series of deflecting elements of being supported on of the vertical free-ended vibration, particularly spring leaf that suppress spring leaf.Elastomeric spring leaf damper is one and selects but optional.
For or manually or flexibly set the tensioning effect, perhaps even for Long-distance Control ground changes tensioning effect (initiatively yarn tensioner, passive yarn tensioner, uncontrolled yarn tensioner, in check yarn tensioner), tensioner base portion can arrange with respect to other tensioner base portion adjustable ground along the direction perpendicular to the yarn direct of travel haply.The tensioner base portion of adjustable ground setting can be connected on manual and/or motor-driven setting actuator or the set mechanism.
In a kind of embodiment simple in structure, a series of deflecting elements can be by preferably latching or pipe fitting measure-alike, that respectively have the conglobate spring leaf contact of a convexity side face consist of.The conglobate side face of convexity can at least part ofly be cylindrical so that in theory each deflecting element only along intersecting the line that extends with the longitudinal direction of spring leaf and contacting with the spring leaf line.Deflecting element can just stick in the groove or can removably be fixed therein or bondedly advance in the groove by retaining element.
For the velveteen that helps to heap inevitably at least one side cleaning yarn tensioner of yarn tensioner simply, the spring leaf vertical side of the edge can relative to each other skew on side direction.
In the embodiment of another particular importance, yarn tensioner can be furnished with clean-up device, these clean-up device comprise that at least one is used for compressed-air actuated nozzle, described nozzle is parallel to the vertical side of the edge of spring leaf contact surface ground alignment springs sheet haply, to blow into clean air, be separated from each other and blown into clean air after opening yarn tensioner in order to the deflecting element on the both sides of deflection path at first especially.
The part clean-up device can be displacement driver or displacement mechanism, are used for entering temporary transient cleaning position with a spring leaf or with a tensioner base portion of spring leaf with respect to the yarn direct of travel and with respect to another spring leaf shifted laterally.
At cleaning position, between the spring leaf or the aerojet that is conducive to nozzle in the laterally offset between the vertical side of the edge strike on the longitudinal blade edge perpendicular to the yarn direct of travel, spring leaf is separated, produce sufficient cleaning effect, remove immediately velveteen and other dirts.
Automated cleaning operating aspect at yarn tensioner is seen, maybe advantageously, nozzle and optional displacement driver (if providing) are connected to the cleaning control system, preferably, this cleaning control system also can be connected to the setting actuator of yarn tensioner, is used for temporarily opening yarn tensioner and spring leaf is moved to the cleaning position of clean cycle.Clean cycle preferably, can be mainly, not in working order the time that is, be carried out when deflecting element is separated a certain degree at yarn tensioner.
Advantageously, spring leaf is made by metal or plastics and is extended beyond 200mm along the yarn direct of travel.Compare with traditional yarn tensioner, this means the extreme longitudinal extent of yarn tensioner certainly.Yet, normally, at the yarn direct of travel the long like this yarn tensioner of enough space mounting is arranged.
Especially, because heavy yarn qualities is set with relative high yarn tensile force, mechanical wear on spring leaf becomes a problem, maybe advantageously, upstream and/or downstream at yarn tensioner provide the yarn eyelet, and this yarn eyelet has been determined the thread path at the on period of yarn tensioner.If these yarn eyelets are oval-shaped or elongated hole shape, have long principal axis of ellipse line or hole spindle axis, be parallel to haply the contact level between two spring leafs, the yarns Y of advancing is so distributed wearing and tearing fifty-fifty in the vibration of thread path side on spring leaf.
Description of drawings
Embodiments of the invention will make an explanation by means of accompanying drawing.In the accompanying drawing:
Fig. 1 shows the schematic side elevation especially for the yarn tensioner of heavy yarn qualities,
Fig. 2 shows the detailed view in the function of the out-of-date yarn tensioner of tying-in,
Fig. 3 shows during tying-in is crossed the another part at the yarn tensioner of work, and
Fig. 4 shows the schematic plan of another embodiment of the yarn tensioner that has pneumatic cleaning device and be in cleaning position.
The specific embodiment
Fig. 1 schematically shows the embodiment of yarn tensioner T, particularly is designed for to process heavy yarn qualities.Yarn tensioner T is so-called heavy yarn tensioner, be used for for example rapier loom, gripper shuttle loom, but also for example move with relatively constant yarn speed as wire coiling machine or wrapping machine at other yarn treatment machines, namely, the yarn tensioner that needs the applicable cases of relatively high yarn tensile force for the yarn of advancing, this yarn tensile force even at the inevitable knot of yarn, twine or irregular through in the situation of yarn tensioner T still as the setting maintenance relatively constant, and so that for example knot smoothly through and do not have a serious tensile force peak value, and do not have the danger of yarn breakage, and the yarn tensile force of setting is can be in the out-of-date change of tying-in very not large and can promptly regain after tying-in is crossed.
Yarn tensioner T in Fig. 1 is the combination of deflection tensioner and clamping or blade tensioner, and comprises a series of deflecting elements 1,2 in the both sides of the thread path P of the yarn of advancing along yarn direct of travel D.In an illustrated embodiment, five deflecting elements 1,2 are provided altogether, i.e. three deflecting elements 1 on the side of thread path P, 1a-1c and the 2a on opposite side, 2b.For example for cylindrical or have at least convexity and lead round contact side face, its bus extends perpendicular to yarn direct of travel D deflecting element 1,2.Thread path P is limited by pair of planar, substantially parallel and flexible thin- walled spring leaf 8a, 8b in both sides in yarn tensioner T.Spring leaf 8a, 8b can have identical size or have different width at the width perpendicular to yarn direct of travel D so that even at the vertical side of the edge of mode of operation lower spring sheet 8a, the 8b of yarn tensioner T (in Fig. 4 27,28) between longitudinal spring sheet edge 27,28 (Fig. 4), the mode of laterally offset to be arranged and locates in a side at least.In the identical situation of spring leaf (8a, 8b) width, spring leaf (8a, 8b) and/or even base portion 4,5 laterally offset ground location can be arranged.
Lower in working order, for example as shown in FIG. 1, deflecting element 1,2 is arranged on the both sides of thread path P each other, so that spring leaf 8a, 8b are deformed into cranky structure.Deflecting element 1 can distribute regularly at intervals.Deflecting element 2a, 2b arrange at intervals and so that each approximately be arranged in the middle of the spacing of deflecting element 1a-1c.Each deflecting element 1,2 can be installed in a tensioner base portion 4,5 the groove 3.Compare with the deflecting element 1 of actual installation, 2 quantity, tensioner base portion 4,5 can have the rule of a greater number or the groove 3 of irregular distribution, allows to change the spacing between position and the deflecting element, to change the tension performance of yarn tensioner.As minimum, two deflecting elements 1 can be set in a side of thread path, at opposite side an independent deflecting element 2 only is set, perhaps can arrange than shown in and as directed another more deflecting element is set.Tensioner base portion 4 can arrange regularly and be fixed to be set on the actuator 6.Tensioner base portion 5 can be connected with setting actuator 6, so that it can move perpendicular to the direction 5a of yarn direct of travel along double-head arrow haply, to change the tensioning effect aspect two of the cranky structure of spring leaf 8a, 8b and the contacts between spring leaf 8a, 8b.Setting actuator 6 can be the setting drive configuration of manual activation, is used for setting and changing constant tension value.Set also and can be carried out by motor-driven setting actuator 6.At last, in monarch-type yarn tensioner T, tensioning effect according to demand Long-distance Control changes, for example in the cycle period of inserting loom, reaching a certain tensioning route inserting cycle period, as traditional in the situation of gripper shuttle loom or rapier loom.If electronic setting actuator 6 is set actuator 6 and can be connected to the control unit (not shown) by cable 7.
Among the embodiment in Fig. 1, the longitudinal extent L of spring leaf 8a, 8b is obviously than long by a series of deflecting element 1,2 length that occupy.Vertical free end 11 of spring leaf 8a, 8b, 13 outwardly-bent is to form entry zone 9 funnel shaped upstream and the downstream and exit region 14. Spring leaf 8a, 8b are fixing at the yarn direct of travel, for example are fixed on the fabricated section 10,12 of tensioner base portion 4, preferably at entry zone 9 places, and can freely leave and away from each other and toward each other bending at vertical free end 13 of exit region 14.The part that is not supported 17 of spring leaf 8a, 8b, vertical free end 11,13 and corresponding the first deflecting element 1a, 1c between, at yarn direct of travel D than distance or alternatively almost the same with spacing long between between the deflecting element.Alternatively, spring leaf damper 18 can be set, adjacent with vertical free end 13 of the spring leaf 8b that is at first supported by the second deflecting element 2a, with for example in out-of-date vibration or the vibration that suppresses vertical free end 13 of lower spring 8b at exit region of tying-in.
The thread path P of yarns Y additionally, can be determined by the yarn eyelet 31 that is arranged on upstream and/or downstream.In a preferred embodiment, those yarn eyelets 31 (Fig. 4) can be ellipse or elongated hole shape, it has principal axis of ellipse line or hole spindle axis 32, the contact level that described axis 32 is parallel between two spring leaf 8a, 8b extends, thereby the yarns Y of advancing is laterally vibrated and laterally distribute wearing and tearing on spring leaf 8a, 8b.
Deflecting element 1,2 can mainly be cylindrical latching or the pipe fitting of being made by metal and/or plastic material, perhaps is arranged on regularly or even is integrated in the tensioner base portion 4,5.
The knot K of yarn tensioner in yarns Y that Fig. 2 shows Fig. 1 follows into direction D through out-of-date service condition.When knot K entered in the entry zone 9, this knot easily separated the unsupported part of spring leaf 8a, 8b, until arrive the position of corresponding the first deflecting element 1c.In this position, spring leaf 8a is supported by deflecting element 1c.Knot K can move another spring leaf 8b yieldly to the direction of arrow 15, thereby knot K easily and smoothly passes through deflecting element 1c, and does not have violent tensile force peak value.Simultaneously, the remainder of yarns Y is pressed to such an extent that the upstream and downstream at the knot K place between the spring leaf 8a, the 8b that abut against each other is tensioned being deflected element 1,2, and also is tensioned when other the deflection of deflecting element.Knot K one arrives the position of next deflecting element 2b, and knot K just moves upper spring sheet 8a yieldly to the direction of dotted arrow 16, have such as above-mentioned same positive effect.
Fig. 3 shows the working stage when knot K will leave yarn tensioner T of the yarn tensioner of Fig. 1 and Fig. 2.Knot K has passed through last deflecting element 1a and now two spring leaf 8a, 8b has been separated at part 17 places, ties subsequently K and easily leaves yarn tensioner through exit region 13.In the downstream of knot K current position, yarns Y by spring leaf 8a, 8b pinch effect and keep tensioning around deflecting element 1,2 deflection.In the terminal stage that tying-in is crossed, can be that the spring leaf damper 18 with latching of rubber coatings can work, with the vibration of not expecting of vertical free end 13 of suppressing lower spring sheet 8b.But spring leaf damper 18 only is the optional equipment of yarn tensioner.
Fig. 4 shows the yarn tensioner T of another embodiment, this yarn tensioner T is furnished with clean-up device C, be used for for example in the situation of yarn tensioner at inoperative, namely, when deflecting element 1,2 is moved away from each other by setting driving 6 or other yarn tensioner opening mechanism (not shown), remove the velveteen of heap and other dirt.
Clean-up device C has at least one nozzle 20, described nozzle 20 at least during clean cycle near the vertical side of the edge 27,28 of spring leaf 8a, 8b, and make the emission direction of pressurized air jet 30 be parallel to haply between two spring leaf 8a, 8b contact level and with longitudinal edge 27,28 relative.Nozzle 20 even can be arranged on two vertical sides of spring leaf 8a, 8b.Emission direction even relative direct of travel D low dip slightly.Displacement driver 21 can be used for moving for example upper spring sheet 8a with respect to lower spring sheet 8b from the side as the part of clean-up device C, so that when nozzle 20 winding-up, longitudinal edge 27,28 is laterally skew relative to each other.For example the movement of upper spring sheet 8a is by arrow 29 expressions.
Alternatively, as mentioned above, longitudinal spring sheet lateral edges 27,28 can also laterally skew (size X) under the mode of operation of yarn tensioner T.
Described skew is conducive to jet 30 and effectively spring leaf 8a, 8b is divided out and remove velveteen and other chip.One cleaning controller 22 can be set, and it for example has for the actuator 23 that starts clean cycle (control system 22 of a pre-programmed perhaps is set, is used for carrying out regularly or according to demand clean cycle).Nozzle 20 can be connected to valve system 24 and be used for compressed-air actuated pressure source 25.Valve system 24 and displacement driver 21 (if being provided with) can be connected to cleaning control system 22, preferably, this cleaning control system 22 also can be connected (line 26) with setting actuator 6, so that at first make yarn tensioner T by using setting actuator 6 to open for clean cycle, subsequently or simultaneous displacement actuator 21 make spring leaf 8a, 8b laterally relative to each other mobile, and subsequently or simultaneously valve system 24 is supplied with pressurized airs to nozzle 20.Yet clean-up device C has or does not have displacement driver 21, is the option means of yarn tensioner T.When edge 27,28 laterally is offset consistently relative to each other, also can use the hand-held air nozzle to clean.
For example, if the cotton of specification Ne16 is processed by yarn tensioner T, then set the high yarn tensile force of about 100cN, this yarn tensile force also must keep substantially constant until the yarn speed of 500m/min.The yarn tensile force of setting also will keep substantially constant continuously during tying-in is crossed.When yarn tensioner T on extremely long distance and the clamping by combination and deflecting effect when acting on the yarn, even the yarn tensile force of setting is relatively very high, the mechanical tensioning load on the per unit length yarns Y keeps appropriateness relatively.
Claims (10)
1. yarn tensioner (T) that is used for the yarn (Y) advance, described yarn tensioner comprises a series of at least three rigid yarn deflecting elements (1,2), described deflecting element has been determined the thread path (P) through described yarn tensioner (T) jointly, described yarn deflecting element is distributing at intervals on the yarn direct of travel (D) and is being distributed on the opposite both sides of described thread path (P), make a corresponding yarn deflecting element be arranged on the side and make it at yarn direct of travel (T) skew be arranged with respect to the adjacent yarn deflecting element on the opposition side that is positioned at described thread path (P), at least one yarn deflecting element can be regulated with respect to another deflecting element on the opposition side that is arranged on thread path perpendicular to described thread path haply in manual and/or motor-driven mode, under the mode of operation of yarn tensioner, to change the tensioning effect, described thread path (P) is flexible by at least one pair of thin-walled, the plane and parallel spring leaf (8a, 8b) between described yarn deflecting element (1), form, described spring leaf (8a, 8b) being deflected element (1) is biased toward one another, so that a corresponding spring leaf (8a) in a position upper support of described thread path (P) on deflecting element (1), and another spring leaf (8b) at same position along freely surrendering perpendicular to the direction of yarn direct of travel (D) haply and away from a described spring leaf, described spring leaf (8a, 8b) upper obviously than by a series of yarn deflecting elements (1 at yarn direct of travel (D), 2) distance that occupies is longer, described spring leaf (8a, vertical free end (11 8b), 13) with corresponding a series of yarn deflecting elements (1,2) the first yarn deflecting element (1a, 1c) yarn direct of travel (D) upper away from, make described spring leaf (8a, 8b) at import and the exit region (9 of yarn tensioner (T), 14) be released at least one zone in, to promote described spring leaf (8a, part 8b) (17) towards with away from each other bending, described part (17) is at vertical free end (11,13) and corresponding described a series of deflecting elements (1,2) extend between the first deflecting element (1a), described spring leaf (8a, 8b) be held to avoid to move at yarn direct of travel (D) with respect to described a series of yarn deflecting elements (1)
It is characterized in that described a series of deflecting elements (1) comprise at least two deflecting elements (1a-1c, 2a, 2b) in each side of described thread path (P),
On yarn direct of travel (D), larger than the spacing between described deflecting element (1,2) in vertical free end (13,11) and the distance between corresponding the first deflecting element (1a, 1c) of described spring leaf (8a, 8b),
At least two yarn deflecting elements fixed installations in a side of described thread path (P), at least two yarn deflecting elements of the opposite side of described thread path (P) along haply perpendicular to the direction of described yarn direct of travel (D) with respect to the yarn deflecting element of a described side by manual and/or motor-driven setting actuator (6) adjustable ground setting
And in the entry zone (9) of yarn tensioner (T), (8a, 8b) is outwardly-bent with arc form for described spring leaf.
2. yarn tensioner according to claim 1, it is characterized in that, by fixing fabricated section and vertical free end combined action of locating in the entry zone (9) of described yarn tensioner (T), keep described spring leaf (8a, 8b) to avoid moving at yarn direct of travel (D).
3. yarn tensioner according to claim 1, it is characterized in that, described a series of deflecting element (1) comprises at least two deflecting elements in a side of described thread path (P), there are three at opposite side, be used for supporting the essentially identical spring leaf of a pair of size (8a, 8b), this forms described thread path (P) to spring leaf in the inboard of described yarn deflecting element.
4. according to the yarn tensioner of the claims 1, it is characterized in that, described deflecting element (1,2) is separately positioned in the groove (3) of two tensioner base portions (4,5), and at least one tensioner base portion (4,5) has the more groove (3) of the deflecting element (1,2) that arranges than the respective side at described thread path (P), and described groove (3) is being distributed on the yarn direct of travel (D) on the described yarn tensioner base portion (4,5) regularly or brokenly.
5. yarn tensioner according to claim 4, it is characterized in that, at least one tensioner base portion (4) has fabricated section (10,12), be used for installing regularly one corresponding vertically free end (11) of described spring leaf (8a, 8b), locate in entry zone (9), compare with described deflecting element (1,2), described fabricated section along perpendicular to the direction of described thread path (P) be spaced fartherly, be arranged on the both sides of described thread path (P).
6. yarn tensioner according to claim 1 is characterized in that, locates to arrange elastomeric spring leaf damper (18) at exit region (14), and (8b) cooperates on function jointly with at least one spring leaf.
7. yarn tensioner according to claim 1, it is characterized in that, described spring leaf (8a, 8b) be formed in respectively on the Width perpendicular to described yarn direct of travel (D) and have different width, perhaps has substantially the same width, but on perpendicular to the Width of yarn direct of travel (D), arrange relative to each other with a relative displacement, so that under the mode of operation of described yarn tensioner (T), at least on a side of described yarn tensioner (T), described spring leaf (8a, vertical side of the edge (27 8b), 28) relative to each other laterally offset.
8. yarn tensioner according to claim 1, it is characterized in that, be provided with at least one spring leaf (8a) or a tensioner base portion (4), so that it can partly be moved laterally at least cleaning position and with respect to yarn direct of travel (D) with at described spring leaf (8a, vertical side of the edge (27 8b), 28) form laterally offset between, described yarn tensioner (T) is furnished with clean-up device (C), these clean-up device comprise at least one nozzle (20), and described nozzle (20) is parallel to described spring leaf (8a haply, aim at the described spring leaf (8a of laterally offset 8b), vertical side of the edge (27 8b), 28).
9. yarn tensioner according to claim 1 is characterized in that, described spring leaf (8a, 8b) is made by metal and/or plastics, and extends beyond 200mm at yarn direct of travel (D).
10. according to claim 1 yarn tensioner, it is characterized in that, at the yarn eyelet (31) that upstream and/or the downstream of described yarn tensioner (T) arrange at least one ellipse or elongated hole shape, the direction of the spindle axis in long ellipse or hole (32) is parallel to the contact surface between described spring leaf (8a, 6b) haply.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10000995.0 | 2010-02-01 | ||
| EP20100000995 EP2354070B1 (en) | 2010-02-01 | 2010-02-01 | Yarn tensioner |
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| Publication Number | Publication Date |
|---|---|
| CN102152997A CN102152997A (en) | 2011-08-17 |
| CN102152997B true CN102152997B (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110034641 Active CN102152997B (en) | 2010-02-01 | 2011-01-30 | Yarn tensioner |
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| Country | Link |
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| EP (1) | EP2354070B1 (en) |
| CN (1) | CN102152997B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20120478A1 (en) * | 2012-03-27 | 2013-09-28 | Savio Macchine Tessili Spa | DEVICE TAKE THE YARN OF THE YARNS IN WINDING |
| CN106087208B (en) * | 2016-08-31 | 2018-02-06 | 江苏恒神股份有限公司 | Carbon fiber weaving, which is used to have, opens up fine function circumferentially unwinding weft accumulator |
| WO2019032007A1 (en) | 2017-08-08 | 2019-02-14 | Iro Aktiebolag | Adjustable yarn brake |
| CN110713077B (en) * | 2019-09-28 | 2021-11-02 | 湖州晨宇家居用品有限公司 | Yarn conveying tension adjusting mechanism of large circular knitting machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2354070B1 (en) | 2013-01-02 |
| CN102152997A (en) | 2011-08-17 |
| EP2354070A1 (en) | 2011-08-10 |
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Address after: 214028 South Road, New District, Jiangsu, Wuxi, No. 216 Patentee after: Van Dwyer (China) Textile Machinery Co., Ltd. Address before: No. 216 South Road, Wuxi, Jiangsu, China Patentee before: Wuxi ainor Technology Co. Ltd. |