EP2038458A1 - Method and device for producing short yarn effects - Google Patents
Method and device for producing short yarn effectsInfo
- Publication number
- EP2038458A1 EP2038458A1 EP07720197A EP07720197A EP2038458A1 EP 2038458 A1 EP2038458 A1 EP 2038458A1 EP 07720197 A EP07720197 A EP 07720197A EP 07720197 A EP07720197 A EP 07720197A EP 2038458 A1 EP2038458 A1 EP 2038458A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- belt
- fibers
- delivery
- spinning
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/32—Regulating or varying draft
- D01H5/36—Regulating or varying draft according to a pre-arranged pattern, e.g. to produce slubs
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/20—Driving or stopping arrangements
- D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
Definitions
- the invention relates to a spinning machine, as well as accessories for spinning machines for producing effect yarn, and to a process for producing effect yarn.
- Spinning machines for the production of fancy yarn from cotton are known from the prior art, in which the drive for the delivery cylinder in the drafting system contains a transmission coupled via a chain drive with a main drive.
- a planetary gear is coupled via a chain drive with the delivery cylinder, which is connected by means of a chain drive to a gear driving the stretch cylinder.
- Short-term overfeeding (increased supply of fibers) by the delivery cylinder causes thickening, so-called flames, in the yarn.
- the resulting flames usually show an a-symmetrical thickness profile, as seen in the fiber withdrawal direction in the leading area have a shallow increase in thickness and decrease in comparison in the trailing area more.
- the delivery mechanism determines, so to speak, the Gamsteg thickness.
- the servomotor controls design-dependent speed peaks of the draw cylinder, which lead to the formation of the flames by transfer of fibers to the delivery.
- the size of each flame is determined by the extent of the rate increase and its duration.
- the individuality of the effect yarn design is limited by the mass inertia in the drive path.
- the quality of the effect yarn suffers particularly under the function necessary in the chain drives game. Furthermore, the spinning machine builds large by the components for the effect yarn and is the Regulatory and tax technical effort relatively large. Since the cylinders are set close to each other in the drafting and delivery plants, intermediate shafts, intermediate gears and space-consuming bypasses are needed for the necessary gear ratios and the planetary gear, which in turn lead to large moving masses, which complicates a sensitive rules or taxes.
- DE4041301 was published in 1992 and is based on the same inventor.
- DE4041301 shows an improved spinning device for producing fancy yarn.
- the drafting system and the delivery mechanism have connected stretching and delivery cylinders to drives, which are individually adjustable by means of a program control.
- the drive of each draw cylinder is mechanically separated from the main drive of the spinning machine.
- the flames are generated by overfeeding by the delivery cylinder of the drafting system.
- EP162756 was disclosed in 2005 and discloses a method and apparatus for producing a fancy yarn having a predefined thickness profile of a flame. To produce an effect, the rotational speed is changed from a pair of "front scooters” and / or a set of “backroller” from a reference speed to a predefined speed and then reset to the reference speed. The pair of "Frontrolplin” and the group of “Backrolplin” are driven by different engines.
- the feed rollers of a drafting system are accelerated, which temporarily leads to an increase in the amount of fiber processed and thus results in a thickening (flame) in the yarn.
- the delivery cylinders, ie output rollers, of the drafting system can be controlled simultaneously with the peripheral speed, which causes the thawed change in the yarn rotation.
- the known from the prior art flame-like Garnef- Fects are always under delay and therefore parallelized, resulting in a minimum length in the range of fiber staple length used.
- An object of the invention is to show a method and an apparatus for carrying out the method, by means of which it is possible to produce spinning effects on a spinning device, in particular a ring spinning machine, which are shorter than the fiber stack length. Another object is to show a device which produces short yarn effects even at high production speeds. Another object of the invention is to show a device that allows fast switching.
- An object of the invention is to obviate the principal limitations inherent in the prior art, or to avoid problems such that yarn effects shorter than the staple length of the fibers used, e.g. at cotton. This will be explained in more detail below.
- fiber guidance aids or capacitors preferably see which counteract a tendency of the fibers to sideways dodge during the stowage process.
- the actuators are preferably designed so that they contribute to a reduction of the mass inertia and thus allow a rapid acceleration and / or deceleration of the delivery rollers. In contrast to the prior art, the substantial thickening is thus achieved not by an increase in the amount of fiber but by an abrupt variation of the take-off speed.
- Disturbing thin spots before or after the thickening are compensated according to the invention by incorporating a simultaneous or a staggered defined overfeed by the feed rollers, ie by the feed rollers are driven faster during a defined time and thus supply more fibers than necessary for the production of a yarn with a constant thickness are.
- controlled, fast-switching drive components are used instead of the usual way, continuously driving draw roll drive gears used. Good results are achieved with electronic transmissions, whose transmissions are continuously adapted according to a preprogrammed driving course.
- servomotors master / slave
- fast-switching couplings actuators
- At least the take-off rolls are designed to have a low mass inertia so that they can be switched faster.
- This can be achieved, for example, by virtue of one or more rollers with their fiber contact regions, which come into contact with the fibers, being designed in a substantially sleeve-shaped manner and being mounted in a rotationally free manner about the axis of a shaft by means of bearings.
- Several fiber contact areas can be combined on a sleeve.
- the individual sleeves can be operatively connected to a drive via suitable couplings, so that the fibers are conveyed through the belts.
- An advantage of this embodiment is that the sleeve-shaped rollers have a low mass inertia, which speeds them up quickly and can be slowed down. This ensures that even at high spinning speeds short flames can be generated.
- the desired short yarn thickening is produced in contrast to the prior art primarily by a fiber compression in front of the delivery cylinder of the drafting system. Simplified shown the pre-warped rovings (slivers) are guided by means of belt transport in the stretched state directly in front of the delivery cylinder clamping point. A comparatively brusque throttling of the fiber withdrawal by controlled deceleration of the take-off roll - if necessary to a short stop - produces a thickening due to a fiber jam (it will be delivered more fibers than transported away for a short time), and a delay stop.
- the jammed fibers are fed into the spinning triangle in the region of the terminal point of the delivery cylinder, where they are exposed to the influence of the spindle rotation and twisted into yarn until the solidification and stability of the finished yarn is given.
- Figure 1 shows the structure of a drafting system of a ring spinning machine for the production of fancy yarn
- FIG. 2 shows the drafting system according to FIG. 1 in a lateral view.
- FIG. 4 shows a further embodiment of a rotor spinning machine for producing effect yarn
- FIG. 5 shows detail E from FIG. 4;
- FIG. 6 shows a side view of the device according to FIGS. 4 and 5;
- Figure 7 shows a segmented shaft with several delivery rollers
- Figure 8 shows a further embodiment in a perspective view
- Figure 9 shows the embodiment of Figure 8 in a side view
- FIG. 10 shows detail F from FIG. 9.
- Figure 1 shows schematically a single drafting 1 of a ring spinning machine 2 (spindles not shown) in a perspective view obliquely from the front and top.
- 2 shows the same drafting system 1 in a simplified side view without drive motors and gearbox (see below)
- FIG. 3 shows an enlarged illustration of detail D from FIG. 2.
- Corresponding elements are provided with the same reference symbols in the figures.
- a drafting system 1 here has paired first and second feed rollers 3, 4, wherein the first feed rollers 3 are driven by a first drive shaft 5.
- the drive shaft 5 normally drives a plurality of first feed rollers of juxtaposed drafting units (not shown).
- the second feed rollers 4 are arranged here on both sides of a boom 6 and are pressed by this during the spinning against the first feed rollers 4.
- the drafting system 1 also has first and second delivery rollers 7, 8.
- the first delivery rollers 7 are driven by means of a second drive shaft 9.
- the second delivery rollers are driven by the first delivery rollers by also arranged on the boom 6 and are pressed during the spinning operation by the boom 6 against the first delivery rollers 7.
- Feed rollers 3, 4 and the delivery rollers 7, 8 are arranged by a third drive shaft 12 actively driven first belt 13 and passively driven second belt 14.
- the second belts 14 are also arranged on the arm 6, which presses them against the first belts 13 during the spinning operation.
- the first belts 13 are deflected in the rear area (trailing) by first belt rollers 15, which are driven by the third drive shaft 12.
- first belt rollers 15 In the front area (leading, to the delivery roller), the first belt 13 are clamped and deflected by a first belt guide 16 at the same time.
- the first belt guide 16 here consists of a profile bar 17 which has a substantially triangular cross-section which tapers towards the delivery rollers 7, 8.
- the second belts 14 are deflected in their rear area (trailing) by passively driven second belt rollers 18, which are also arranged on the boom 6. In the front region, the second belt 14 are deflected by second belt guides 19, which are also arranged on the boom 6.
- the first and second belt guides 16, 19 are configured to press the first and second belts 13, 14 in a contact area substantially parallel to each other during spinning operation. In the illustration shown, the components occurring in pairs are arranged symmetrically to the boom 6, but are partially covered by this and are therefore only visible individually.
- the feed roller 3, the belt roller 15 and the delivery roller 8 in the embodiment shown on a knurled surface 42.
- a capacitor (not shown in detail) may be provided, which cooperates with the second belt 14.
- the second belt 14 is driven directly via the first belt roller 15.
- the first drive shaft 5 of the intake winch zen 3, 4 and the third drive shaft 12 of the first and the second belt 13, 14 are coupled in the same direction via a drive chain 24 and two sprockets 25 here.
- the electric motor 26 may alternatively or in addition to the act ex works in the spinning device 2 built-in drive. If necessary, the original drive can also be completely replaced by a new drive.
- the second drive shaft 9 responsible for the delivery rollers 7, 8 is individually driven by a second drive motor 30 and a second transmission 31.
- the gears 28, 31 have in the embodiment shown a driving and a driven pinion 38, 39 which are either directly engaged with each other or at least one intermediate element operatively connected to each other.
- the intermediate element may, as shown here, be at least one intermediate pinion 40 or another operative connection, e.g. in the form of a toothed belt or a drive chain act.
- the intermediate element 40 serves to bridge the lateral distance between the drive shaft of the motor and the shaft to be driven.
- the drive motors responsible for effect yarn production are, in a preferred embodiment, servomotors which are controlled via servomotor controls (not shown). If required, eg for long shafts, more than one drive motor per shaft, shaft pairs, resp. Machine provided, which cooperate in a network. To provide robust, non-disruptive and easy-to-maintain operation, the multiple drive motors are matched by being coupled to each other via actuators in the form of an electronic transmission to form actuators.
- a first drive motor (main drive motor) is supplied by a program control with data on the shape of the flames to be produced and their distances from one another.
- the other propulsion engines (satellite propulsion 00
- Ren in the composite are, however, not directly with the program control, but with the motor control of directly fed from the program control main drive motor operatively connected. This ensures that the mechanical loading of the shafts and gears, e.g. as a result of tension is reduced.
- transmissions 27, 31 according to the invention serve to bridge distances between the drive shafts 5, 9, 12 and one or more drive motors 26, 30.
- fiber guiding aids may be arranged in the compression region (see FIG. which counteract a tendency of the sideways deflection fibers during the upsetting process.
- disruptive thin spots may occur before and / or after the compressions 36.
- these are compensated for by the inclusion of a simultaneous or a staggered, defined overfeed by the draw-in rollers, ie by the feed rollers are driven constant or variable faster during a defined time and thus supply more fibers than are necessary for the production of a yarn with a constant thickness.
- FIG. 4 shows a further embodiment of a spinning device 2 for the production of effect yarn in a perspective illustration.
- FIG. 5 shows detail E from FIG. 4.
- the arm 6, which is fastened to the holder 10 is pivoted upward with the upper, passive intake and delivery rollers 4, 8 about the pivot axis 11 in the open state, so that a View into the interior of the drafting system is possible.
- a part of the roving 22, which extends between the delivery rollers 3, 4 and the belts 13, 14, extends to the delivery rollers 8, 9, where it is in the spinning operation at the spinning point 34 by the rotation of the spindle (not shown ) is processed into yarn 35 with flames 36.
- first, the second and the third drive shaft 5, 9, 12 are operatively connected to each other via first and second connecting gear 45, shown schematically here as a toothed belt or chain links.
- first and second connecting gear 45 shown schematically here as a toothed belt or chain links.
- one or more other active connection means can be provided, which enable a fixed or a variable transmission ratio between the drive axles 5, 9, 12. Good results are achieved, for example, with planetary gears.
- at least the first or the third drive axle 5, 12 is driven via one or more drives, eg servomotors (not shown). By the active connection means 45, the drive movement is transmitted to the other two drive axles 5, 9, 12.
- one or more hydraulic actuators 50 are used, here in the form of a hydraulic coupling 50 (gear pumps, radial piston pumps, axial piston pumps) in which an inlet 51 and an outlet 52 are directly or indirectly e.g. are operatively connected to each other via a valve 53.
- the relative movement between a drive side 54 and an output side 55 can be blocked by closing the valve 53 by inhibiting the circulation of a hydraulic oil between the inlet 51 and the outlet 52.
- the device may have a capacitor 60 which, when the pre-flame 33 is generated, stabilizes the fibers of the roving 22 and prevents unintentional deflection.
- the capacitor 60 is arranged in the region between the first and the second belt 13, 14 and behind the take-off rolls 7, 8. It has two lateral guide elements 61 and a funnel wall 63, which, viewed from above form a funnel-shaped opening 62, promote the upsetting of the fibers and prevent them from unintentionally yielding.
- the guide elements 61 extend in the embodiment shown at least partially between the two belts 13, 14, where they direct the fibers supplied to the opening 62. Depending on the embodiment, they are in direct contact with these.
- the condenser 6 In the front area, to the take-off rolls 7, 8 out, the condenser 6 is designed so that it practically completely fills the space between the belt 13, 14 and the take-off rolls 7, 8 in the closed boom 60, so that no fibers can escape elsewhere ,
- the capacitor is preferably made of an abrasion resistant material to reduce wear.
- Figure 6 shows a section of the arrangement according to Figures 4 and 5 in a side view and with closed boom 6 (boom 6 in production position). So that the view of the condenser 60 is not restricted, the connecting gear 45 and the coupling 50 shown in FIG. 4 are omitted.
- the first and the second delivery roller 7, 8, as well as the first and the second belt 13, 14 can be seen, inter alia.
- the first belt 13 is stretched by the first belt roller 15 and the first belt guide 16.
- the arranged on the boom 6 second belt 14 is stretched by the second belt roller 18 and the second belt guide 19 and is pressed by this in the spinning operation against the first belt.
- first and the second belt 13, 14 fibers 22 are to be seen, which are conveyed by the belts 13, 14 in the direction of the delivery rollers 7, 8 (indicated by arrow Fl).
- the belts 13, 14 are driven substantially continuously, which is schematically represented by the arrows F2 and F3.
- the delivery rollers 7, 8 are discontinuously driven by a program control (not shown in detail) by braking brusquely and then accelerated again to a predefined speed (illustrated schematically by the arrows F4 and F5). If necessary, the delivery rollers are braked to a standstill and then accelerated again.
- the embodiment shown here has a capacitor 60 which serves to concentrate and densify the fibers during the upsetting process. So that no fibers can escape unintentionally, the condenser 60 and the guide element 61 are designed so that it fills the space between the take-off rolls 7, 8 and the belt 13, 14 tight and promotes a targeted feeding between the take-off rolls 7, 8.
- the take-off rolls 7, 8 When the take-off rolls 7, 8 are stationary or strongly braked, the fibers are actively conveyed into the funnel-shaped opening 62 by the belts 13, 14 and jammed against a funnel wall 63 (see FIG. 5) and / or against at least one take-off roll 8.
- the jammed fibers When increasing the speed of the take-off rolls 7, 8, the jammed fibers are drawn between the take-off rolls 7, 8 and processed in the region of the spinning point 34 to a flame 36.
- at least one of the take-off rolls may have a surface 42 which promotes the collection of fibers between take-off rolls while accelerating.
- the surface may have at least partially protruding elements that are retracted at least in the region of the spinning point.
- the drive shaft 9 has a plurality of juxtaposed first delivery rollers 7, which are arranged on sleeve-shaped supports 65 and operatively connected via clutches 50 with the second drive shaft 9.
- the sleeve-shaped carrier 65 are here by means of bearings 66 on the shaft 9 about its longitudinal axis (y-direction) rotatably arranged.
- the carriers 65 with the delivery rollers 7 arranged thereon are designed such that they engage H2007 / 000300
- the clutches 50 are preferably hydraulic or electric clutches that can be electrically switched by canceling the operative connection between the carriers 65 and the drive shaft 9 when applying an electrical voltage and actively braking the delivery rollers 7, if necessary, for an uncontrolled rotation to avoid. This offers the advantage that even with a power failure, the production is not adversely affected. It is also possible to design the actuators 50 as drives for a segment 65. In this case, the shaft 9 may be stationary under certain circumstances and serve only for storage of the segments 65 via bearings.
- FIG. 8 shows a further embodiment of a spinning device 2 for producing fancy yarn 35 with knob-shaped thickenings 36 in a perspective view.
- Figure 9 shows the same device in a side view and
- Figure 10 shows detail F of Figure 9.
- the device 1 shown has in the central region of the drafting system 2 behind the feed rollers 3, 4 instead of two only one belt 13 which is a belt roller 15 and a belt guide 16 is deflected and cooperates in the spinning operation with a counter roller 70.
- a delivery belt 72 is essentially spanned relative to the first belt 13.
- the delivery belt 72 has the effect that the fibers accumulated between the condenser 69 and the delivery belt 72 and compressed into a preliminary flame 33 are introduced into the spinning point directly and without negative delay when the delivery rollers 7, 8 start up again.
- the delivery belt 72 may be arranged at an angle ⁇ of 0 ° to about 15 ° with respect to the fiber guide 60, respectively the first belt 13 (adjustable) in order to increase the funnel effect. Depending on the field of application other angles are possible.
- the delivery belt 72 is driven in the embodiment shown by means of the lower delivery roller 8.
- One advantage is that the fibers dammed up to the pre-flame 33 accelerate virtually all at the same time during conveyance into the spinning point 34 and thus not be separated. In the event that the delivery rollers 7, 8 are arranged closer to the first belt 13, it may be possible to dispense with the capacitor 60.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH10572006 | 2006-06-30 | ||
PCT/CH2007/000300 WO2008000102A1 (en) | 2006-06-30 | 2007-06-19 | Method and device for producing short yarn effects |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2038458A1 true EP2038458A1 (en) | 2009-03-25 |
EP2038458B1 EP2038458B1 (en) | 2013-07-31 |
Family
ID=38559405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07720197.8A Active EP2038458B1 (en) | 2006-06-30 | 2007-06-19 | Method and device for producing short yarn effects |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2038458B1 (en) |
CN (1) | CN101443492B (en) |
ES (1) | ES2428127T3 (en) |
WO (1) | WO2008000102A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017046218A2 (en) | 2015-09-18 | 2017-03-23 | Amsler Tex Ag | Device and method for making of a stretch yarn |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2568205T3 (en) * | 2009-07-09 | 2016-04-28 | Amsler Tex Ag | Device for spinning with soul |
ITMI20112062A1 (en) * | 2011-11-14 | 2013-05-15 | Pratocom Macchine S R L | APPARATUS AND SPINNING METHOD |
CN103526370B (en) * | 2013-11-05 | 2015-09-02 | 广东忠华棉纺织实业有限公司 | Filament tension constant device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE559498A (en) * | 1956-08-01 | |||
CN1039076A (en) * | 1988-06-28 | 1990-01-24 | 尼特·维得 | Flamme fance yarn manufacturing method and equipment |
DE4041301A1 (en) | 1990-12-21 | 1992-06-25 | Amsler Iro Ag | Effect yarn spinner - has separate drives for drawing cylinders with program control for rapid design change |
DE4307839A1 (en) * | 1993-03-12 | 1994-09-15 | Rieter Ingolstadt Spinnerei | Method and device for automatically setting the speed ratios on a route |
CN1140656C (en) * | 2001-08-03 | 2004-03-03 | 杭州中汇棉纺织有限公司 | Intermittent spinning process and yarn therewith |
DE10152747A1 (en) * | 2001-10-25 | 2003-05-22 | Zinser Textilmaschinen Gmbh | Sliver drawing, for yarn spinning, has condensing station with irregular sliver tension between drawing and condensing, to give thickened zones for spinning into yarn with flame/thick knotting effects |
DE102004017025B4 (en) * | 2004-04-02 | 2018-05-17 | Maschinenfabrik Rieter Ag | Spinning machine with several plug-in drives |
JP4333477B2 (en) | 2004-05-24 | 2009-09-16 | 株式会社豊田自動織機 | Special yarn manufacturing method |
-
2007
- 2007-06-19 WO PCT/CH2007/000300 patent/WO2008000102A1/en active Application Filing
- 2007-06-19 CN CN2007800171056A patent/CN101443492B/en not_active Expired - Fee Related
- 2007-06-19 ES ES07720197T patent/ES2428127T3/en active Active
- 2007-06-19 EP EP07720197.8A patent/EP2038458B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2008000102A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017046218A2 (en) | 2015-09-18 | 2017-03-23 | Amsler Tex Ag | Device and method for making of a stretch yarn |
Also Published As
Publication number | Publication date |
---|---|
CN101443492A (en) | 2009-05-27 |
EP2038458B1 (en) | 2013-07-31 |
ES2428127T3 (en) | 2013-11-06 |
CN101443492B (en) | 2011-05-11 |
WO2008000102A1 (en) | 2008-01-03 |
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