CN105579632A - Method and device for applying forces and motions to warp threads of weaving machine - Google Patents
Method and device for applying forces and motions to warp threads of weaving machine Download PDFInfo
- Publication number
- CN105579632A CN105579632A CN201480054659.3A CN201480054659A CN105579632A CN 105579632 A CN105579632 A CN 105579632A CN 201480054659 A CN201480054659 A CN 201480054659A CN 105579632 A CN105579632 A CN 105579632A
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- deflecting element
- yarn deflecting
- motion
- warp thread
- yarn
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/12—Controlling warp tension by means other than let-off mechanisms
- D03D49/14—Compensating for tension differences during shedding
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/06—Warp let-off mechanisms
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/22—Back rests; Lease rods; Brest beams
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- Textile Engineering (AREA)
- Looms (AREA)
Abstract
The invention relates to a method for applying forces and motions to warp threads (1, 1 ') of a weaving machine, comprising the following steps: deflecting the warp threads (1, 1 ') via a thread-deflecting element (2), which is supported in such a way that the thread-deflecting element can be pivoted about a pivot axis (3); applying spring forces to the thread-deflecting element (2) by means of more than three force application points (5) along a first line (6), which extends parallel to the pivot axis (3), wherein the spring forces are applied by at least one spring element (4); applying a specified forced-oscillation motion (38) to the thread-deflecting element (2), wherein said motion (38) is applied by a drive means (7) via a drive element (8), wherein the forces on the thread-deflecting element (2) are supported partially on at least one spring element (4) by means of the thread-deflecting element (2) and partially on the drive means (7) by means of the drive element (8). The invention further relates to a corresponding device.
Description
Technical field
The present invention relates to the method and apparatus for being applied to by force and motion on the warp thread of loom.
Background technology
For loom, known such device in the prior art, utilizes this device force and motion can be applied on the warp thread of loom.
Such as DE2731046A1 shows such device, and this file is considered as immediate prior art.This file relates to the warp thread pulling force for being equilibrated at the loom place with self firm continuous print oscillating back rest that can support movably, it is characterized in that, the pressure cushion block that oscillating back rest is extended substantially by least one in the longitudinal direction of oscillating back rest supports.
WO1997030201A1 shows the tensioning apparatus for warp thread piece, in this tensioning apparatus, be provided with idler roller, and this idler roller supports by support roller spring ground contractibility over its length in multiple times.
From WO2008077383A1, become known for the oscillating back rest of loom, in this oscillating back rest, passing through to be balanced by the yarn deflecting element be arranged on leaf spring through movement of the warp upwards runout.
DE19915952A1 describes a kind of method, in the method, oscillating back rest is forced to control in optional mode around the motion of the swing of the longitudinal central axis line of this oscillating back rest or optional is controlled, and in other words in the method, positively controlled motion superposes with optional moving.
Oscillating back rest (Streichb ume) in other words idler roller is used as the yarn deflecting element of the warp thread of loom between warp beam and weaving plane.In addition, be provided with spring element in the device be mentioned before, spring force is applied to yarn deflecting element at multiple somes places by the width that this spring element crosses warp thread piece, thus obtains the uniform distribution of this spring force.By the resilient suspension of yarn deflecting element, when pulling force in warp thread changes, correspondingly have also been obtained the motion of yarn deflecting element, this motion reacts on described pulling force and changes.
At this, spring element and yarn deflecting element so design in the prior art at the arrangement at loom place, make in the statokinetic situation of the yarn deflecting element flexibly suspended, warp thread pulling force in weaving cycle in the open shedding position of warp thread is still greater than the warp thread pulling force in closed shed position, and this closed shed position is also referred to as shed closed.
When weaving, now showing very close fabric, making in the weaving cycle of loom, in the region of beating up, need higher warp thread pulling force, also in fact to realize required high weft count.Beating up of loom is generally temporarily carried out in weaving cycle after shed closed.But just as implemented, this is such region, and in this region, warp thread pulling force is lower.In addition, obtain the balance exercise fast of the yarn deflecting element when the pulling force fast in warp thread changes by the little quality to be moved that has of the yarn deflecting element of aforesaid device, thus the unexpected raising of the warp thread pulling force caused by beating up is balanced at least in part again.
Therefore task of the present invention is, be provided for the method and apparatus be applied to by force and motion on the warp thread of loom, wherein, in weaving cycle, realize the balance of pulling force fluctuation in a specific area, and can not realize balancing in other region or the raising targetedly of even warp thread pulling force.
Summary of the invention
Described task is by solving according to the method described in independent claims and device.
Method according to the present invention has following method step:
1) described warp thread is deflected by yarn deflecting element, and wherein, yarn deflecting element can support pivotally around pivot axis.Pivot axis also can refer to the virtual axis that kinematics aspect works.
2) spring force is applied to yarn deflecting element, and applies in particular by multiple impetus.At this, impetus distributes along First Line, and this line parallel extends in pivot axis.These impetus are arranged with distributing on the width of yarn deflecting element.In the following manner the uniform distribution that load imports is responsible for, namely there is the impetus of more than three.At this, these points can be arranged in the outside end of yarn deflecting element, certainly also can be arranged in the region at the middle part of yarn deflecting element.At this, impetus not only should be included in the point of geometric aspects accurate definition, and refers to very general geometric position, and in this position, power transmission is carried out between components.These put forth effort position or impetus distributes along a line, but need not to be positioned at exactly on this First Line and also can to have flat extension.Thus refer to such geometric position, this position spacing each other extends substantially on the direction of common line.Spring force is applied by least one spring element.
3) motion swung forcibly preset is applied to yarn deflecting element, wherein, described motion is applied by driving element by actuator.
Realize by applying the motion swung forcibly that presets, yarn deflecting element all occupies the position of definition at any time in weaving cycle.Described motion also has inactive state during weaving cycle.These inactive states can be such as dead points, and in this dead point, described motion more accurately comes inactive state, then to continue in the opposite direction immediately.But the inactive state of motion also exists as relaxing area where necessary, and in this relaxing area, the element of passive movement does not change the position of this element in weaving cycle in certain time length.
According to method step 2) the applying of spring force do not change the described motion of yarn deflecting element.There is not the superposition of moving yet.So set up described method, the described motion of the size of warp thread pulling force and yarn deflecting element is not determined by spring force position in other words, but determines by means of only the motion being applied to swing forcibly by actuator.
Worked the raising of power from closed shed to the raising of the warp thread pulling force caused by the motion of open shedding by warp thread, this power is applied to yarn deflecting element by warp thread.Otherwise when warp thread moves to closed shed from open shedding, the power be applied on yarn deflecting element reduces.These power are supported on spring element place according to a present invention part by yarn deflecting element and a part is supported on actuator place by driving element.Applying spring force to yarn deflecting element by the extra motion in applying compulsory swing, achieving the support off-load in other words to requisite drive unit.When not having this to support, acting on to the warp thread pulling force on yarn deflecting element and being supported by the driving element on actuator such as eccentric driving device or electro-motor.Driving element and actuator remarkable sizing larger must design when not having spring to support, this can cause the cost of increasing.
Especially preferably, spring element has the spring characteristic curve that can adjust.Due to the energy scalability of spring characteristic curve, the coupling to the warp tension of varying level warp thread pulling force in other words under different fabric instances can be carried out, and need not spring element be changed to this coupling.Because spring characteristic curve is to different warp tension levels and/or the described feasible program of mating the warp thread with different elastic characteristics, obtain the simplification when design driven part equally, be first when described actuator electricity ground or electropneumatic by control time.
Preferably, be arranged at least one spring element place to yarn deflecting element setting, thus can realize in a straightforward manner supporting the part mentioned above of effect to the power of yarn deflecting element.In other words, yarn deflecting element advantageously so constructs and arranges, makes this yarn deflecting element be supported at least one spring element place.Yarn deflecting element is positioned at least one spring element at this.Supportive arrangement carries out advantageous by least one contact surface between yarn deflecting element and at least one spring element.
Especially advantageously, by multiple tie point, the motion swung forcibly is applied to yarn deflecting element, yarn deflecting element is connected with driving element by described tie point.These tie points preferably distribute on the width of yarn deflecting element, namely extend along the second line being parallel to pivot axis trend.At this, what import load is uniformly distributed with profit, there is the tie point of more than three.At this, these points can be arranged in the outside end of yarn deflecting element, certainly also can be arranged in the region at the middle part of yarn deflecting element.
In second-line arrangement and distribution, very usually refer to again the position of geometry at tie point, connect between components in the position of this geometry.These link positions or tie point distribute along the second line, but need not to be positioned at exactly on this line and also can to have flat extension.Thus refer to such geometric position, this position spacing each other extends substantially on common second-line direction.
Achieve the impact targetedly of warp thread pulling force with the mode and method that consider the demand of weaving technology aspect by drive unit.
Such as, consider such as with the transmission mechanism in mechanical aspects transmission unevenly of eccentric element or cam disc as actuator.
But required pulling force tendency is matched to best advantageously to the motion swung forcibly of yarn deflecting element, control electronically to be used for the actuator such as electro-motor of yarn deflecting element, and preset the motion swung forcibly of described yarn deflecting element electronically with being controlled by electro-motor or other the actuator being suitable for this by the control unit of loom.
Usually, control unit is used to this, form part (Fachbildemittel) for shed open and be stored in this control unit with the weave pattern of the motion of the warp thread in loom.The data record comprising the electronics of described weave pattern also can comprise about warp thread from open shedding to the information of the motion tendency on the path of closed shed except the information of the order at closed shed position in other words of the open shedding position about warp thread.This motion tendency of warp thread forms part by the shed open of vertical movement and produces, such as, by the brown frame that driven by the dobbies mechanically or electronically controlled or eccentric machine or monofilament generation.Thus, when controlled actuator electronically, the motion tendency of yarn deflecting element can coordinate the motion tendency to warp thread pointedly, thus can realize the balance of the best of the following fluctuation of warp thread pulling force, and this fluctuation is by causing from open shedding to the conversion of closed shed.
In order to form this balance best, can it is necessary that be so applied the motion swung forcibly of yarn deflecting element by actuator, make the dead point of this motion in weaving cycle, be positioned at such some place, at this some place, multiple warp thread is arranged in closed shed, namely at shed closed point place; Or at least than the point beaten up more near shed closed point.Such region during this dead point preferably refers to described point or at least refers to the motion tendency moved towards in the substantial horizontal swung forcibly of yarn deflecting element, in this region, yarn deflecting element has the maximum horizontal spacing with woven reed in weaving cycle.This dead point is described as the dead point at the rear portion of the motion of yarn deflecting element here.
Generally, so select the arrangement of spring element, make this spring element, in the dead point at the rear portion the most described by the motion of weaving cycle intrinsic warp deflecting element, minimum spring force is applied to yarn deflecting element.At this, that so select yarn deflecting element with arrangement that is spring element, make spring element in dead point place minimally tensioning and the tensioning the most by force of fore dead point place at rear portion.The dead point of the front portion of the motion of the swing of yarn deflecting element be following point or motion with lower area, namely at this point or this region place, yarn deflecting element flatly has the minimum spacing with woven reed.
Motion tendency considered here also can have so-called relaxing area at the dead point place of this motion tendency in other words in end position, and in this relaxing area, during weaving cycle, the motion of yarn deflecting element temporarily comes inactive state.When there is such relaxing area, should in conjunction with the present invention, the dead point of motion is interpreted as the such point in motion tendency or in curve movement, this point is positioned at the middle part of such relaxing area.In these are considered, the fluctuation of speed of drive unit is not considered always, can ask for the middle part of the relaxing area of indication here with geometrically or calculating accordingly.Such as, ask for from curve movement or motion form, in this curve movement or motion form, be filled with the positional value of the component (such as yarn deflecting element) about angle axis with constant step-length.At this, in order to define described angle axis, use such angle step, final drive shaft is performed the revolution more than, the corner namely more than 360 by this angle step.
Generally, so implement according to method of the present invention, make the dead point of the motion swung forcibly on curve movement at shed closed point with immediately following between beating up a little thereafter or these some places.
Can more closely compared to immediately follows previous shed closed in weaving cycle beat up in the dead point of this motion, or vice versa.
Generally, the point beaten up is not far be positioned at the point of closed shed in weaving cycle after.In closed shed and the interval between beating up, although warp thread moves towards the direction of open shedding again, at this, warp thread pulling force does not also improve significantly.In order to still produce in warp thread when beating up weaving required pulling force with high weft count, then by the special flexible program of the aforesaid variant of described method, the dead point at the rear portion of the motion of yarn deflecting element is inserted in the region of beating up; Or at least on the curve movement of yarn deflecting element than shed closed more near beating up.
In beating up, the weft yarn before inserted is fed to weaving point or fabric edge from the woven reed of loom, and is firmly pressed into the fabric existed more or less at this place.
In order to produce very close fabric, need the higher pressure based on woven reed.In this process, in the warp thread between yarn deflecting element and woven reed, produce pulling force peak value.Yarn deflecting element flatly can not move towards the direction of woven reed in described method variant after shed closed point, that is can not towards the dead-centre motion of front portion, but stop or even moving towards contrary direction, until this yarn deflecting element arrives the dead point at the rear portion of this yarn deflecting element.
By this process implementation, in beating up, exist for the warp thread pulling force increased needed for close fabric.
When only resilient suspension (motion do not preset forcibly) of yarn deflecting element and when the quality of the yarn deflecting element supported in multiple times on the width of loom is less, in this stage of weaving cycle, warp thread pulling force is reduced, this is because spring element can be surrendered.
But can advantageously, in the region of beating up, warp thread pulling force be reduced with defining in other fabric type.This point is such as applicable to towel cloth, and wherein, a part for warp thread should push away when beating up and connect as Towel gasket or towel ring.For this process advantageously, at this, be reduced in the pulling force in participated in warp thread forcibly.In order to realize this point, in the method step of another modification, period can be connect pushing away of Towel gasket, the yarn deflecting element for participated in warp thread towards the dead-centre motion of the front portion of this yarn deflecting element, namely move to such position, in this position, minimum with the spacing of the level of woven reed.
In another variant, the feasible program that method according to the present invention also provides is, passed through the actuator that can control electronically by the control unit of loom, differently preset the motion swung forcibly of yarn deflecting element according to the weave pattern for different weaving cycles.Which determines by weave pattern to form part with the shed open of the warp thread of the inside guiding and to enter in ensuing weaving cycle in top shed and which enters in lower shed.Only in pure flat sennit (1:1), during weaving cycle, at the volley, that is, all warp thread enter in top shed or enter in lower shed warp thread all the time.In other braiding, during complete weaving cycle, a part for warp thread remains in top shed or lower shed when not moving.Here, weaving cycle to be interpreted as from woven reed in the backstop of fabric edge to the function course of the loom of the ensuing backstop at fabric edge place of woven reed.
In most cases, the warp thread of all participation weaving process is only deflected in weaving plane by unique yarn deflecting element by unique warp beam pull.In normal weaving process, a part for warp thread is arranged in lower shed in weaving cycle, to be then transformed in top shed by closed shed and to be arranged in top shed during weaving cycle afterwards.Another part of warp thread moves similarly in the opposite direction, and that is, this part of warp thread is arranged in top shed, is then transformed into lower shed by closed shed and is arranged in lower shed during weaving cycle afterwards in weaving cycle.
Here, top shed describes the tendency upwards defining Weaving shed warp thread piece, and the warp thread in lower shed defines Weaving shed downwards.Closed shed position or shed closed describe the such point on curve movement, at this some place, from top in other words below warp thread touch one another.In this touching, in weaving cycle in short-term, closed vertical intermediate space (Weaving shed) between participated in warp thread piece.Do not move in real-time weaving cycle but keep in top shed in other words lower shed stop warp thread between intermediate space be not closed.Weaving shed conversion is not carried out to these warp thread, that is not through closed shed position.According to whether only some warp thread of loom or all warp thread in weaving cycle through or not through closed shed position, obtain the different demand that the pulling force for being equilibrated in the full wafer of warp thread changes, described warp thread is deflected by yarn deflecting element.
To the yarn deflecting element swingingly driven forcibly thus advantageously, the motion preset can be matched to the tensile relationship of conversion when different braidings; That is, the motion swung forcibly of yarn deflecting element can differently preset according to the weave pattern for different weaving cycles.
In addition to realizing the present invention meaningfully, position and the amplitude at the dead point of the motion of the swing preset of landform resultant yarn deflecting element can be adjusted electronically and/or mechanically.
Have yarn deflecting element for performing according to the device of method of the present invention, this yarn deflecting element can support pivotally around pivot axis.In addition, there is at least one spring element, wherein, by spring element, spring force can be applied to yarn deflecting element by the impetus place more than three.At this, impetus is along First Line, and this line parallel extends in the pivot axis of yarn deflecting element.
In addition, actuator and driving element is provided with.Such as, transmission mechanism and/or electro-motor can be used as actuator.Certainly, also can to use hydraulically or the actuator that pneumatically works.Such as, be used as driving element with the power transmission shaft of lever arm or other train element, utilize described transmission components can transmit or produce the pivoting action of swing.Under any circumstance so implement actuator and driving element, make the motion swung forcibly preset to be applied to yarn deflecting element by described actuator by driving element.This means, in the bang path of the motion between actuator and yarn deflecting element, there is not transmitting element or Connection Element, described transmitting element or Connection Element are distorted or to be changed the motion tendency preset of yarn deflecting element with the mode do not predicted and method.The motion that such as such distortion can be caused to preset pointedly in other words based on the transmission of leaf spring based on flexible element (at described element place fastening yarn deflecting element) of this motion swung forcibly preset with other by adjusted spring characteristic curve and the real-time determined motion of warp thread pulling force within the framework of the invention be not supposed to superpose.
By the present invention, effect to the power of yarn deflecting element can be supported at least one spring element place partially by yarn deflecting element and be supported on actuator place partially by driving element.
Preferably, at yarn deflecting element there is contact surface in place, and this contact surface is in the contact with at least one spring element.At this, yarn deflecting element rests on spring element place by described contact surface.Then, by described contact surface, spring force is applied to yarn deflecting element.Can realization effect to the part according to the present invention of the power of yarn deflecting element support in a straightforward manner thus.
In order to realize the favourable setting described in the yarn deflecting element at least one spring element place, these elements are preferably designed to independently component.
In a favourable flexible program, driving element is connected along the tie point place of the second line more than three with yarn deflecting element, and wherein, the second line parallel extends in pivot axis.
Moreover, design already described above being suitable in first or second-line layout and distribution at impetus and tie point.Very usually refer to the position of such geometry, carry out power transmission between components or connection in this position.These positions or point along First Line the second line distribution in other words, but need not to be positioned at exactly on corresponding line and also can to have flat extension.Thus refer to such geometric position, this position spacing each other extends substantially on the direction of involved virtual line.
Type described in connection between yarn deflecting element and driving element causes, the motion swung forcibly preset not only the right side of yarn deflecting element and left side namely outside warp thread piece and also cross warp thread piece the deflecting element of yarn in other words width also within warp thread piece in other words under position be passed to yarn deflecting element.
Motion can reduce the distortion of yarn deflecting element, this is because described power distributes better with the importing along the first and second lines distributions of spring force.The distortion reduced contributes to this, and the motion swung forcibly of yarn deflecting element less deviates from the motion preset.
Especially preferably, the spring characteristic curve of spring element can be adjusted.In order to spring force is applied to yarn deflecting element evenly over the width of warp thread piece in described type, therewith relevant advantageously, spring element is configured to the ducted body being filled with gas, the volume of this ducted body can flexibly change, wherein, spring characteristic curve can be adjusted by the pressure changed in gas.Ducted body such as can be configured to the rubber tube being filled with gas or the pressure cushion block longitudinally extended, and the longitudinal axis of this ducted body extends on the width of the deflecting element of yarn in other words of warp thread piece.
Certainly the leaf spring that the width of yarn deflecting element distributes can be also used in, spring force is applied to yarn deflecting element.By mechanism's (utilizing described mechanism can change the corresponding effective length of such leaf spring) obtain spring characteristic curve also in this enforcement flexible program can scalability.
Yarn deflecting element self such as can be configured to the section bar with longitudinal axis, and wherein, described longitudinal axes parallel extends in pivot axis.
For the deflection of warp thread further advantageously, yarn deflecting element has bending deflection plane, and this deflection plane is parallel to pivot axis and extends with the first spacing with pivot axis.
In addition, yarn deflecting element can have one or more contact surface, by this contact surface (such as by be filled with gas ducted body or by leaf spring) spring force can be applied to yarn deflecting element.At this, contact surface is parallel to pivot axis to extend with the second spacing of pivot axis, and wherein, the second spacing is less than the first spacing.Obtained by this arrangement, spring force acts on yarn deflecting element place between pivot axis and contact surface.
The feature of another embodiment of described device is, driving element is configured to driving shaft, and longitudinal axis and the virtual pivot axis of this driving shaft are superimposed, and wherein, yarn deflecting element is fastened on this driving shaft place as described above by multiple tie point.
Loom with good grounds device of the present invention is equipped with adjustment part, utilizes this adjustment part can adjust the dead point of the motion swung forcibly of yarn deflecting element.These adjustment parts can be the types of machinery or electronics.
In the adjustment of machinery, such as cam disc or eccentric part are removed by the power transmission shaft from subordinate and are again connected with power transmission shaft on traffic direction or against traffic direction.
When the actuator for yarn deflecting element can be controlled electronically, desirably, loom comprises control unit, in this control unit, can calculate by calculating device the data being used for the motion swung forcibly presetting yarn deflecting element, and/or described data can be stored in memory device.Also the different dead point of the motion swung forcibly can be preset thus.
Many looms have shed open and form part and control unit, thus warp thread can move according to the weave pattern stored in a control unit and forms part by shed open.
With when being equipped with such loom according to device of the present invention, be provided with the control unit with computer device, by this computer device, the motion swung forcibly of described yarn deflecting element can be calculated according to corresponding weave pattern.
This motion can be matched to different fabric type and braiding by programme-control by this way.
Accompanying drawing explanation
Fig. 1 is the schematic presentation of the side view of the loom of the embodiment being with good grounds device of the present invention;
Fig. 2 is section, detailed view in Fig. 1;
Fig. 3 is the rearview of the loom according to Fig. 1;
Fig. 4 is motion tendency and the tendency of the warp thread pulling force at loom place in the embodiment of a form of method according to the present invention, and
Fig. 5 is motion tendency and the tendency of the warp thread pulling force at loom place in the embodiment of another form of method according to the present invention.
Detailed description of the invention
Fig. 1 shows the side view of the loom of the embodiment being with good grounds device of the present invention; Fig. 2 shows intercepting part wherein.
Loom has warp beam 22 on the rear side of this loom, by this warp beam pull warp thread 1.Warp thread 1 is supplied to yarn deflecting element 2 by deflection tube 28 in present exemplary.By yarn deflecting element 2, warp thread 1 is deflected to weaving plane by pull direction.In order to monitor warp thread 1, be provided with warp thread monitor 24 in present exemplary, this warp thread monitor defines the vertical motion of the warp thread (namely formed between part 11 and warp beam 22 at shed open) in rear shed open, but does not hinder the horizontal movement of warp thread.
In weaving plane, warp thread 1,1' form part 11,11' and woven reed 27 by shed open and direct in the front area of loom.Warp thread 1,1' vertical ground motion form part 11,11' by shed open, wherein, from the warp thread of top shed 1 and lower shed 1', form Weaving shed 23.
Shed open forms part 11, the motion of 11' is derived by weave pattern, and this weave pattern is stored in the control unit 16 of loom.
Fabric deflects once again and reels on the front side of loom.Weft yarn 25 to input in Weaving shed 23 and is beaten up to being pressed into fabric edge 26 in other words by woven reed 27 when beating up between woven reed 27 and fabric edge 26.
Yarn deflecting element 2 can be arranged pivotally around pivot axis 3.Pivot axis 3 is configured to driving shaft 8, and this driving shaft is driven by the driver element 7 formed by electro-motor and the transmission mechanism arranged coaxially.Electro-motor is controlled electronically by control unit 16.Control unit 16 comprises control program and the storaging piece of the data for calculating and/or store the motion 38 swung forcibly for yarn deflecting element 2.
Shown in Fig. 2, yarn deflecting element 2 has carrier 19, and by this carrier, this yarn deflecting element is fastened on the face place through processing of driving shaft 8 by bolt 20.Yarn deflecting element 2 also has bending deflection plane 14, and warp thread 1 is deflected into weaving plane from deflection tube 28 from warp beam 22 in other words by this deflection plane.In addition, at yarn deflecting element 2 there is contact surface 15 in place, and this contact surface is in the contact of spring element 4.At this, yarn deflecting element 2 rests on spring element 4 place by described contact surface 15.By described contact surface 15, spring force is applied to yarn deflecting element 2.Spring element 4 is configured to the ducted body being filled with gas, and this ducted body is arranged between contact surface 15 and the horizontal carrier 18 of loom frame 17, and wherein, horizontal carrier 18 is parallel to pivot axis 3 and extends.Spring force is applied to yarn deflecting element 2 by multiple impetus 5 thus, and wherein, impetus 5 extends along virtual line 6 on contact surface 15, and this line parallel extends in pivot axis 3.Ducted body 4 is flexible flexible pipe in present exemplary, and the volume of this flexible pipe can be changed by the change of air pressure.Be furnished with current the other carrying section bar that part surrounds described flexible flexible pipe 4 between flexible flexible pipe 4 and horizontal carrier 18.To be fastened on the horizontal carrier 18 place of loom frame 17 in side for the carrying section bar of flexible pipe 4 and to be fastened on supporting shell 21 place of driving shaft 8 at opposite side.The supporting shell 21 of driving shaft 8 is supported on the fixing component place of the frame 17 of loom.When current, also deflection tube 28 is fastened on this component place.
Due to the change of the air pressure in flexible flexible pipe (spring element 4), then the spring constant of this spring element changes, thus can adjust the spring characteristic curve of spring element 4.This means, by the change of air pressure, have adjusted the relation between spring force and spring travel.In order to change air pressure, being provided with and there is manometric pneumatic valve.Described valve is connected to central compressed air supply system, this compressed air supply system not shown current.Described pneumatic valve and pressure gauge have the function for filling the compressed-air actuated pressure source of 12 as the gas for flexible ducted body.Pressure source is schematically shown as compact structure unit 13 in FIG.
Fig. 3 shows the view of the loom according to Fig. 1 and 2 from warp beam side.Warp thread 1 is removed in this schematic diagram, to make the sight line of the details to yarn deflecting element 2 unimpeded.In addition, in this schematic diagram, the region of the loom below warp beam axis has been excised.The carrier 19 of yarn deflecting element 2 is connected with driving shaft 8 by bolt 20 at multiple tie point 9 place.Described driving shaft 8 supports within the bearing at frame 17 place in multiple times on width.In order to be provided for the position of the housing 21 of these bearings, the carrier 19 of yarn deflecting element 2 has intercepting part at each cartridge housing 21 place of driving shaft 8.Tie point 9 is arranged along virtual line 10 on the width of loom, and this line parallel extends in driving shaft 8.Be apparent that, the little deviation of the position of bolt 20 in vertical direction does not have the impact on described function.Key is in fact, and bolt 20(is tie point 9 that is) so distribute along line 10 about the width of the loom in other words of yarn deflecting element 2, make driving force be applied to yarn deflecting element 2 with distributing on the width of loom.The distance to each other of the bolt in other words 20 of tie point 9 is greater than the spacing on the direction perpendicular to pivot axis 3 on the direction being parallel to pivot axis 3.Which avoid distortion, produce this modification can apply driving force during in side.This point is supported by the distribution of cartridge housing 21 on the width of loom.
Fig. 3 is it is also shown that driver element 7 is arranged on the side place of driving shaft 8.The motor of driver element and transmission mechanism are coaxially arranged in driving shaft 8 ground.By this way, the motor torque swingingly applied is passed to driving shaft 8 to a great extent losslessly.The construction unit 7 formed by electro-motor and transmission mechanism is fastened on the side-walls of frame 17 by motor carrier.
Figure 4 and 5 show for implement according to the warp thread 1 at loom place during the method for present invention, the motion tendency 38 preset in 1' and the example of the tendency of pulling force that therefrom produces.
The difference of Figure 4 and 5 is, dead point 39, the 39' at the rear portion of the motion swung forcibly of yarn deflecting element 2 differently preset in both figures.
In order to obtain convictive signal, in the chart of Figure 4 and 5, illustrate the motion tendency 30,32,33,38 in standardized form.That is, the amplitude between a minimum value and a maximum value of each motion tendency 30,32,33,38 is all standardized as 1.The axis scale of the ordinate of the chart shown is towards this standardization.
Illustrate the angle value from 0 to 720 angle on the horizontal scale.These angle values are corners of the final drive shaft about loom, this final drive shaft with 360 angles namely with the weaving cycle of single-revolution during be rotated further.Described chart thus illustrates the intercepting part of two weaving cycles (=720 angle) based on loom.
Two Fig. 4,5 implement the identical motion tendency 30 of woven reed 27, and the feature of this motion tendency is to beat up a little 31 respectively 0 degree time 360 degree time and 720 degree time.
Between relaxing area in, woven reed 27 is arranged in resting position, namely forms (see figure 1) near part 11 at shed open at loom place.At this moment, shed open formation part 11,11' such as brown frame 11,11' are arranged in top shed or lower shed.This is described to open shedding.At this moment, weft yarn input is carried out.
Described chart also show the motion tendency 32,33 of two brown frames 11,11', and described brown frame moves in top shed (+0.5) or in lower shed (-0.5) each other inversely.The feature of such shed open conversion is, the brown frame 11 participated in, 11' and by the warp thread 1 of these brown frames motions, 1' is not in weaving cycle but change position between two mutual consecutive weaving cycles, namely from the top down from bottom to top in other words.The point that two brown frames 11,11' touch on its stroke is described as shed closed point, shed closed or closed shed 34.In the chart of Figure 4 and 5, shed closed 34 is approximately positioned at 320 angle places, namely soon to beating up a little before 31.The motion tendency 32 and 33 of two brown frames 11,11' is herein through the value 0,0 on ordinate.
Illustrate the tendency of the warp thread pulling force 35 only obtained from so reverse motion 32,33 of two brown frames 11,11' in figures 4 and 5 chain-dotted line.The maximum of warp thread pulling force 35 appears in open shedding, and minimum of a value appears in closed shed 34.This tendency of warp thread pulling force 35 shows as such tendency, when yarn deflecting element 2 can not be connected with frame 17 movably (oscillating back rest of so-called rigidity), just obtains described tendency.Thus only from warp thread 1,1' this warp thread from top shed to lower shed (see Fig. 1) stroke on tendency geometry change in and the elasticity intrinsic by warp thread namely from warp thread 1 from the rigidity of warp thread 1 come to obtain warp thread pulling force tendency 35 ability of balanced pulling force change.
This flexible balance is supported by arranging spring 4 at yarn deflecting element 2 place; Do not load described warp thread 1 more by force.In figures 4 and 5, illustrate warp thread pulling force tendency 36 dotted line, obtain this warp thread pulling force tendency when the resilient support of yarn deflecting element 2.Visible compared with the pulling force tendency 35 in " oscillating back rest of rigidity " situation, in the motion 32,33 in brown frame 11,11' are from closed shed to open shedding, warp thread pulling force 36 does not raise by force.This is because for the warp thread pulling force 36 raised, the yarn deflecting element 2 flexibly the supported warp thread 1 be run thereon loads with increasing.Spring 4 is compressed and yarn deflecting element 2 moves towards the direction of woven reed 27.Thereby reduce warp thread pulling force 36.This minimizing is supposed in principle, to limit the warp thread pulling force of maximum generation.If achieve this point, then from tendency 35,36 relatively obviously.But, by using the oscillating back rest yarn deflecting element 2 in other words that flexibly supports, beat up 31 region in decrease warp thread pulling force 36.This point can not be supposed in weaving technology, when namely especially close fabric should be woven with the fabric of high weft count.
By using the motion 38 of the swing preset of yarn deflecting element, this can be reacted on.
The motion tendency 38 of the swing preset of yarn deflecting element 2 shows as sine-shaped function in both figures.This is can the function of very simple realization.For the corresponding programming of the control unit 16 for controlling described driver element 7, certainly also can realize complicated motion tendency 38, such as, with asymmetrical tendency or the motion tendency with the rest period.In present exemplary, preset the tendency of the symmetry of the motion 38 of the swing not having the rest period.Described motion 38 has two dead points, i.e. the dead point 39 at value 0,0 place on the vertical scale, at the dead point 40 at value-1,0 place.0, the dead point 39(at the 0 place 39' in other words in Fig. 5) be the position at the rear portion the most of the motion 38 of yarn deflecting element 2 at current performance.In this position, yarn deflecting element 2 has the maximum spacing with woven reed 27, and this yarn deflecting element has the minimum spacing with woven reed 27 in the dead point 40 of other front portion.
Reduce warp thread pulling force 35,36,37 by reducing yarn deflecting element 2 with the spacing of woven reed 27, and this warp thread pulling force is improved by the increase of spacing.
As mentioned above, can it is necessary that beat up 31 region in produce the warp thread pulling force larger than the warp thread pulling force realized with the yarn deflecting element 2 that flexibly supports.Wish on the other hand to avoid, in open shedding, warp thread pulling force is so large, as not having in flexible oscillating back rest in use rigidity.The yarn deflecting element 2 be applied to the dead point 39 near shed closed 34 and the other dead point 40 in open shedding by the motion 38 of the swing by sine achieves this target.This point, at tendency place obvious at warp thread pulling force 37 place, obtains this tendency based on the motion 38 swung forcibly described before yarn deflecting element 2.Tendency 36 and 37 in the diagram relatively make this point obvious.Visible here, the tendency of the warp thread pulling force 37 obtained from the motion 38 of the swing preset of yarn deflecting element 2 is beating up 31 higher than the pulling force tendency 36 when only supporting at yarn deflecting element 2 resilient.This effect also can be reinforced, when engraving when the dead point 39 at the rear portion of the motion 38 of the swing preset of yarn deflecting element 2 is arranged on such, this moment the shed closed moment 34 and beat up between 31 or this moment even than the shed closed moment 34 more near beating up 31.
Illustrating described relation is in Figure 5 how change relative to Fig. 4, when the dead point 39' at the rear portion of the motion 38 of the swing preset of yarn deflecting element 2 be positioned at 350 angle places namely after shed closed 34 when beating up near 31.Visible, at a little 31 places of beating up, warp thread pulling force 37' is further improved relative to the tendency 37 in Fig. 4.What certainly also show is, in warp thread pulling force tendency 37', maximum warp thread pulling force in open shedding still not higher than the warp thread pulling force (tendency 36) when only using the yarn deflecting element flexibly supported, and is starkly lower than the warp thread pulling force (tendency 35) when irremovable yarn deflecting element.
Owing to being elastically supported extraly according to yarn deflecting element 2 of the present invention, then from the difference between the curve of two among Fig. 4 or Fig. 5 37 and 36, obtain the minimizing of the load for actuator 7.
As above-mentioned mention, at this, show only standardized motion tendency 30,32,33,38.Certainly, the geometric position of reality at the dead point 39,40 of the motion 38 of yarn deflecting element 2 and the motion amplitude of reality must be coordinated form the amplitude of the reality of the motion 32,33 of part 11 to shed open and coordinate to the geometrical relationship in Weaving shed 23.To this meaningfully, electronically and/or mechanically can form position and the amplitude at dead point 39,40 with adjusting.
In current observation, keep it is not considered that in the raising that can occur the pulse type of warp tension during 31 when inputted weft yarn 25 is pressed into fabric edge 26 of beating up.The characteristic of the textile technology aspect of the size of this pulse and duration and warp thread and weft yarn is relevant.But to those skilled in the art, this association and correlation are trusted, thus the consideration of this association and correlation does not throw into question when realizing of the present invention.
By using according to method of the present invention with according to device of the present invention, when the unallowed raising not having warp thread pulling force 37, when the lower load of the actuator 7 for yarn deflecting element 2, achieve weaving with high weft count.
List of numerals
1, the warp thread of 1' in top shed in other words in lower shed
2 yarn deflecting elements
3 pivot axis
4 spring elements
5 impetus
6 First Lines
7 driver elements
8 driving shafts
9 tie points
10 second lines
11,11' shed open forms part
12 gases are filled
13 pressure sources
14 bending deflection planes
15 contact surfaces
16 control units
17 frames
18 horizontal carriers
The carrier of 19 yarn deflecting elements
20 bolts
21 cartridge housings
22 warp beams
23 is Weaving shed
24 warp thread monitors
25 weft yarns
26 fabric edges
27 woven reeds
28 deflection tubes
The motion tendency of 30 woven reeds
31 beat up a little
The motion tendency of 32 brown frames 1
The motion tendency of 33 brown frames 2
34 shed closed points
35,36,37, the tendency of 37' warp thread pulling force
The motion tendency of 38 yarn deflecting elements
39, the dead point at the rear portion of the motion of 39' yarn deflecting element
The dead point of the front portion of the motion of 40 yarn deflecting elements.
Claims (19)
1., for force and motion being applied to a method for the warp thread (1,1') of loom, the method is with following method step:
-by yarn deflecting element (2) by warp thread (1,1') deflection, this yarn deflecting element can support pivotally around pivot axis (3);
-spring force is applied to yarn deflecting element (2) by the impetus (5) of more than three along First Line (6), and described line parallel extends in pivot axis (3), and wherein, described spring force is applied by least one spring element (4);
-motion (38) swung forcibly preset is applied to yarn deflecting element (2), wherein, this motion (38) is applied through driving element (8) by actuator (7), wherein, the power acted on to yarn deflecting element (2) is supported at least one spring element (4) place partially by yarn deflecting element (2) and is supported on actuator (7) place partially by driving element (8).
2. in accordance with the method for claim 1, it is characterized in that, use at least one spring element (4) with the spring characteristic curve that can adjust, wherein, at least one spring element (4) is preferably configured to the ducted body being filled with gas, and the spring characteristic curve of this ducted body can be adjusted by changing air pressure.
3. according to the method described in claim 1 or 2, it is characterized in that, be arranged at least one spring element (4) place to yarn deflecting element (2) setting.
4. according to the method according to any one of Claim 1-3, it is characterized in that, by the tie point (9) of more than three between driving element (8) and yarn deflecting element (2), the motion (38) swung forcibly preset is applied to yarn deflecting element (2), wherein, tie point (9) is arranged along the second line (10) with being parallel to pivot axis (3).
5. according to the method according to any one of Claims 1-4, it is characterized in that, by actuator (7), the motion swung forcibly (38) is so applied to yarn deflecting element (2), after making the dead point of this motion (38) (39,39', 40) be positioned at shed closed point (34) place or this shed closed point in weaving cycle, and maybe this beats up a little this dead point (39,39', 40) are positioned at immediately following this shed closed point (34) point (31) place of beating up.
6. according to the method according to any one of claim 1 to 5, it is characterized in that, by actuator (7), the motion swung forcibly (38) is so applied to yarn deflecting element (2), makes the dead point of this motion (38) (39,39', 40) beat up point (31) more near shed closed point (34) in weaving cycle internal ratio immediately following this shed closed point (34).
7. according to the method according to any one of claim 1 to 5, it is characterized in that, by actuator (7), the motion swung forcibly (38) is so applied to yarn deflecting element (2), make the dead point of this motion (38) (39,39', 40) in weaving cycle internal ratio immediately preceding the front shed closed point (34) of this point (31) that beats up more near beating up point (31).
8. according to the method according to any one of claim 1 to 7, it is characterized in that, part (11,11') is formed according to the weave pattern stored in the control unit (16) of loom by warp thread (1,1') motion by the shed open of loom, and wherein, actuator (7) for yarn deflecting element (2) is electronically controllable, wherein, pass through by the control unit (16) of loom the motion (38) swung forcibly that the actuator (7) that can control electronically presets yarn deflecting element (2).
9. in accordance with the method for claim 8, it is characterized in that, pass through the actuator (7) that can control electronically by the control unit (16) of loom, for different weaving cycles, differently preset the motion (38) swung forcibly of yarn deflecting element (2).
10. one kind for being applied to the warp thread (1 of loom by force and motion, device 1'), this device is with yarn deflecting element (2), this yarn deflecting element can support pivotally around pivot axis (3), and this device is with at least one spring element (4), wherein, spring force can be applied to yarn deflecting element (2) by spring element (4) impetus more than three (5) place, wherein, impetus (5) exists along First Line (6), the pivot axis (3) that this First Line is parallel to yarn deflecting element (2) extends, it is characterized in that, there is actuator (7), the motion (38) swung forcibly preset can be applied to yarn deflecting element (2) by this actuator through driving element (8), wherein, act on and can be supported at least one spring element (4) place to the power of yarn deflecting element (2) partially by yarn deflecting element (2) and actuator (7) place can be supported on partially by driving element (8).
11. according to device according to claim 10, it is characterized in that, at least one spring element (4) has the spring characteristic curve that can adjust, wherein, at least one spring element (4) is preferably configured to the ducted body being filled with gas, and the spring characteristic curve of this ducted body can be adjusted by changing air pressure.
12., according to the device described in claim 10 or 11, is characterized in that, are arranged at least one spring element (4) place to yarn deflecting element (2) setting.
13. according to the device according to any one of claim 10 to 12, it is characterized in that, driving element (8) is connected along the second line (10) tie point more than three (9) place with yarn deflecting element (2), and wherein, the second line (10) is parallel to pivot axis (3) and extends.
14., according to device according to claim 13, is characterized in that, driving element (8) is configured to driving shaft, by tie point (9), yarn deflecting element (2) are fastened on this driving shaft place.
15., according to device according to claim 14, is characterized in that, driving shaft (8) extends about the longitudinal direction of this driving shaft and is bearing in point (21) place of more than three.
16., according to the device described in claims 14 or 15, is characterized in that, actuator (7) has CD-ROM drive motor, and this CD-ROM drive motor is coaxially arranged in driving shaft (8).
17. 1 kinds with the loom according to the device according to any one of claim 10 to 16, wherein, loom has adjustment part, utilizes this adjustment part can adjust multiple dead points (39,39', 40) of the motion (38) swung forcibly of yarn deflecting element (2).
18. according to loom according to claim 17, this loom is with control unit (16), wherein, the actuator (7) for yarn deflecting element (2) can be controlled electronically, and wherein, control unit (16) comprises storaging piece, can store the data of the motion (38) swung forcibly for default yarn deflecting element (2) in this storaging piece.
19. according to loom according to claim 18, wherein, loom has shed open and forms part (11,11'), and wherein, warp thread (1,1') forms part (11,11') by shed open and can move according to the weave pattern be stored in control unit (16), and wherein, control unit (16) has computer device, by this computer device, the motion (38) swung forcibly of described yarn deflecting element (2) can be calculated according to corresponding weave pattern.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013219942.2 | 2013-10-01 | ||
| DE102013219942.2A DE102013219942A1 (en) | 2013-10-01 | 2013-10-01 | Method and device for applying forces and movements to warp threads of a loom |
| PCT/EP2014/070861 WO2015049216A1 (en) | 2013-10-01 | 2014-09-30 | Method and device for applying forces and motions to warp threads of weaving machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105579632A true CN105579632A (en) | 2016-05-11 |
Family
ID=51663156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480054659.3A Pending CN105579632A (en) | 2013-10-01 | 2014-09-30 | Method and device for applying forces and motions to warp threads of weaving machine |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20160230317A1 (en) |
| EP (1) | EP3052686A1 (en) |
| JP (1) | JP2016536475A (en) |
| CN (1) | CN105579632A (en) |
| BR (1) | BR112016006430A2 (en) |
| DE (1) | DE102013219942A1 (en) |
| RU (1) | RU2016116503A (en) |
| WO (1) | WO2015049216A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835458A (en) * | 2016-12-27 | 2017-06-13 | 浙江理工大学 | A kind of low inertia back rest of loom |
| CN114286877A (en) * | 2019-08-24 | 2022-04-05 | 洛希亚有限公司 | Shuttle pad assembly, shuttle and circular weaving machine |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016216610B3 (en) * | 2016-09-02 | 2017-11-02 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Method and device for changing the dynamic behavior of a spreading bar of a weaving machine |
| DE102016220546B3 (en) * | 2016-10-20 | 2017-11-16 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Device for measuring the warp tension in a loom and loom with such a device |
| BE1026319B1 (en) * | 2018-05-31 | 2020-01-13 | Picanol Nv | Towing device for pile warp threads in a towel weaving machine |
| DE102018212932B3 (en) | 2018-08-02 | 2019-06-13 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Device for guiding warp threads in a weaving machine |
| DE102018218294B3 (en) * | 2018-10-25 | 2020-03-05 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Device for measuring the warp tension in a weaving machine and weaving machine |
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| CN114286877A (en) * | 2019-08-24 | 2022-04-05 | 洛希亚有限公司 | Shuttle pad assembly, shuttle and circular weaving machine |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112016006430A2 (en) | 2017-08-01 |
| EP3052686A1 (en) | 2016-08-10 |
| WO2015049216A1 (en) | 2015-04-09 |
| DE102013219942A1 (en) | 2015-04-02 |
| JP2016536475A (en) | 2016-11-24 |
| RU2016116503A (en) | 2017-11-13 |
| US20160230317A1 (en) | 2016-08-11 |
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Application publication date: 20160511 |