WO2016155165A1 - 五组份异步牵伸动态配置纱线线密度和混纺比的方法及装置 - Google Patents
五组份异步牵伸动态配置纱线线密度和混纺比的方法及装置 Download PDFInfo
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- WO2016155165A1 WO2016155165A1 PCT/CN2015/085268 CN2015085268W WO2016155165A1 WO 2016155165 A1 WO2016155165 A1 WO 2016155165A1 CN 2015085268 W CN2015085268 W CN 2015085268W WO 2016155165 A1 WO2016155165 A1 WO 2016155165A1
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- rear roller
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- 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
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
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- 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
- D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
Definitions
- the invention relates to the field of ring spinning in the textile industry, in particular to a five-component asynchronous drafting method and device for dynamically configuring linear density and blending ratio.
- the yarn is an elongated fiber assembly formed by twisting the fibers in parallel orientation.
- the characteristic parameters of the yarn generally include fineness (linear density), twist, blend ratio (mixing ratio), and the like.
- the characteristic parameters of the yarn are important features that need to be controlled during the forming process.
- a yarn having a constant linear density and a blending ratio such as a linear density yarn having a gradation color or a segmented color
- Blended yarn or mixed color yarn which does not change in linear density and blending ratio, but is blended in any ratio.
- a yarn having a constant linear density and a blending ratio (or color mixing ratio) can be conceived as a linear density yarn having a gradation color or a segmented color.
- a blending ratio or color mixing ratio
- the existing method for producing a linear density yarn by ring spinning uses a middle and a rear roller to feed a roving, and intermittently spinning through the uneven feeding of the rear roller to produce a variable linear density yarn.
- an intermittent spinning process and its yarn (authorization number ZL01126398.9), its principle is to feed a staple yarn B from the back roller, through the uneven draft of the middle and rear rollers Then, it is merged with another main yarn strip A fed from the middle roller and then into the front drafting zone.
- the main yarn strand is evenly thinned to a certain linear density under the action of the main drafting ratio in the front zone, and the auxiliary yarn strand is attached to the main yarn.
- a discontinuous uneven linear density distribution is formed on the yarn batt.
- the roller is unevenly fed to the amount of the auxiliary yarn fluctuation amount, and finally, different effects such as a little yarn, a slub yarn, and a big belly yarn can be formed on the yarn.
- the disadvantage of this method is that the main and auxiliary yarns cannot be exchanged, and the variation of the thickness of the bamboo section is limited.
- the current method is to mix two or more different kinds of raw materials through a pre-spinning process to obtain a roving of a certain blending ratio, and then the roving is spun into a spun yarn in a spinning process to obtain a linear density and a blended yarn.
- Traditional processes can only achieve several more conventional ratios, such as 50:50, 65:35, 60:40.
- the main problems are that one cannot be blended at any ratio, and the second cannot achieve blending of two or more fibers in any ratio in one step.
- the object of the present invention is to provide a five-component isochronous secondary draft fiber strand, which is then combined to form a yarn, and can adjust the linear density and blending of the ring spinning yarn. ratio.
- the invention can simultaneously change the density of the spun yarn and the blending ratio, and breaks through the limitation that the existing spinning method cannot adjust the characteristic parameters of the yarn on-line, and produces the above four types of yarns.
- a method for dynamically configuring a linear density and a blending ratio of a five-component asynchronous drafting specifically includes:
- the actuator mainly comprises a five-component split-type asynchronous secondary drafting mechanism, a twisting mechanism and a winding forming mechanism, and the five-component split-type asynchronous secondary drafting mechanism includes a first-order asynchronous pulling Stretching unit, secondary synchronous drafting unit;
- the first-stage asynchronous drafting unit comprises a combined rear roller and a middle roller; the combined rear roller has five rotational degrees of freedom, and includes a first rear roller, a second rear roller, and a second side roller arranged on the same rear roller shaft.
- the third rear roller, the fourth rear roller and the fifth rear roller; the first rear roller, the second rear roller, the third rear roller, the fourth rear roller and the fifth rear roller are respectively at speeds V h1 , V h2 , V h3 , V h4 and V h5 movement;
- the middle roller rotates at a speed V z ;
- the secondary synchronous drafting unit includes a front roller and the middle roller; the front roller rotates at a surface linear velocity V q ;
- the linear density of the component and the fifth roving component are ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 and ⁇ 5 , respectively, and the linear density of the yarn Y obtained by the pre-roller drawing and twisting is ⁇ y ,
- the blend ratios k 1 , k 2 , k 3 , k 4 and k 5 of the first roving component, the second roving component, the third roving component, the fourth roving component and the fifth roving component are expressed as follows:
- On-line dynamic adjustment of the yarn Y-line density or/and the blending ratio is achieved by adjusting the rotational speeds of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller.
- the first rear roller and the second are derived.
- the blending ratios k 1 , k 2 , k 3 , k 4 and k 5 of the fifth roving component, the ratio K 1 , K 2 , K 3 and K 4 of the blend ratio of the yarn Y are as follows:
- ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 , V q are constants, and K i and ⁇ y are functions as a function of time t.
- ⁇ y is the linear density change of the yarn Y
- ⁇ y is the linear density change of the yarn Y
- ⁇ y is the amount of change in linear density of yarn Y
- ⁇ y is the linear density change of the yarn Y
- the adjustment process causes the speeds of the two rear rollers to be adjusted to zero, and after If the speed of the roller is not zero, the yarn components stretched by the two rear rollers in the yarn Y are successively interrupted, while the other yarn components are continuous, and the linear density ⁇ of the adjusted yarn Y is y is:
- T 1 and T 2 are time points and t is a time variable.
- the adjustment process causes the speeds of the three rear rollers to be adjusted to zero, and after If the speed of the roller is not zero, the yarn components stretched by the three rear rollers in the yarn Y are successively interrupted, while the other yarn components are continuous, and the linear density ⁇ of the adjusted yarn Y is y is:
- T 1 , T 2 and T 3 are time points and t is a time variable.
- the adjustment process causes the speeds of the four rear rollers to be adjusted to zero, and after If the speed of the roller is not zero, the yarn components stretched by the four rear rollers in the yarn Y are successively interrupted, while the other yarn components are continuous, and the linear density ⁇ of the adjusted yarn Y is y is:
- T 1 , T 2 , T 3 and T 4 are time points
- V h1 * ⁇ 1 +V h2 * ⁇ 2 +V h3 * ⁇ 3 +V h4 * ⁇ 4 +V h5 * ⁇ 5 constant
- the linear density of the yarn Y is changed without changing the blending ratio of the components; the first yarn component and the second yarn component, the third yarn component, the fourth yarn component, and
- the blending ratios k 1 , k 2 , k 3 , k 4 and k 5 of the fifth yarn component are:
- V h1 +V h2 +V h3 +V h4 +V h5 V z , that is, the sum of the speeds of the five rear rollers is equal to the linear velocity of the middle roller, then:
- the blending ratio of the five yarn components ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 and ⁇ 5 in the yarn Y is equal to the reciprocal of their respective draw ratios in the first drafting zone
- the yarn Y is divided into n segments, and the linear density and the blending ratio of each yarn Y are the same, and the linear density or the blending ratio of the adjacent two segments is different;
- the linear velocities of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller and the fifth rear roller are V h1i , V h2i , V h3i , V h4i , respectively.
- the blending ratios k 1i , k 2i , k 3i , k 4i and k 5i can be expressed as follows:
- the linear density of the yarn of the i-th segment is:
- the segment with the smallest line density of the n-segment yarn Y be defined as the reference line segment, the reference line density of the segment is ⁇ 0 , and the first rear roller, the second rear roller, the third rear roller, the first segment of the segment
- the reference line speeds of the four rear rollers and the fifth rear roller are V h10 , V h20 , V h30 , V h40 and V h50 respectively ;
- the first roving component, the second roving component, the third roving component of the segment are k 10 , k 20 , k 30 , k 40 and k 50 , respectively.
- V z V h10 +V h20 +V h30 +V h40 +V h50 (8);
- the reference speeds V h10 , V h20 , V h30 , V h40 and V h50 of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller and the fifth rear roller are according to the first roving component Material of the second roving component, the third roving component, the fourth roving component and the fifth roving component, the reference line density ⁇ 0 and the reference blending ratios k 10 , k 20 , k 30 , k 40 and k 50 Set in advance;
- Equations (2)-(8) calculate the linear velocities V h1i , V h2i , V h3i , V h4i of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller And V h5i ;
- equation (7) is simplified as:
- the linear density of the yarn Y increases the dynamic increment ⁇ yi based on the reference line density, that is, the thickness change ⁇ yi ;
- the linear velocities of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller are respectively incremented on the basis of the reference linear velocity, that is, (V h10 +V h20 +V H30 +V h40 +V h50 ) ⁇ (V h10 + ⁇ V h1i +V h20 + ⁇ V h2i +V h30 + ⁇ V h3i +V h40 + ⁇ V h4i +V h50 + ⁇ V h5i ), the increase of yarn Y-line density for:
- the linear density variation of the yarn Y is achieved by controlling the sum of the linear velocity increments ⁇ V i of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller.
- Adjusting the blending ratio of the yarn Y by controlling the linear velocity increments of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller;
- ⁇ V h5i k 5i *(V z + ⁇ V i )-V h50 .
- V h1i , V h2i , V h3i , V h4i and V h5i be zero, and the others are not zero, then the 1-4 kinds of roving components in the yarn i of the i-th segment are realized. continuous.
- first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller are respectively drawn with five primary colors of yellow, magenta, cyan, black, and white;
- the front roller speed V q is constant, and the speeds of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller are adjusted, thereby achieving color matching of the yarn; when mixing colors, using black yarn Adjust the color depth or saturation of the color spinning, use white to adjust the color density or brightness of the color spinning, and use different proportions of white and black to obtain a variety of different colors.
- the roving strips of five colors of yellow, magenta, cyan, black and white, namely CMYKW five-color roving, are coupled, stretched, gradient-matched, mixed and twisted by a ring spinning machine drafting and twisting system.
- the yellow, magenta, cyan, black, and white fibers can be mixed into yarns in any ratio specified, and the color matching of any color can be achieved through the five-color color matching, and the blended colors are more pure.
- a five-component isochronous drafting device for regulating yarn linear density and blending ratio, comprising a control system and an actuator, the actuator comprising a five-component split-type asynchronous secondary drafting mechanism, twisting mechanism and winding a molding mechanism;
- the secondary drafting mechanism comprises a primary drafting unit and a secondary drafting unit;
- the primary drafting unit comprises a combined rear roller and a middle roller;
- the combined rear roller has five rotational degrees of freedom, including the same a first rear roller, a second rear roller, a third rear roller, a fourth rear roller, and a fifth rear roller disposed side by side on the root roller shaft; five of the rear rollers are disposed adjacent to each other, and the driving mechanism is disposed at five The two sides of the rear roller;
- the secondary drafting unit includes a front roller and the middle roller.
- the third rear roller is fixedly disposed on the rear roller shaft; the other four rear rollers are symmetrically disposed on two sides of the third rear roller, and the five rear rollers are independently rotatable with each other;
- the second rear roller Provided with a second sleeve connected to the driving mechanism, the second sleeve is sleeved on the rear roller shaft, the first rear roller is rotatably fitted on the second sleeve;
- the fourth rear roller is provided with A fourth sleeve coupled to the drive mechanism, the fourth sleeve is sleeved on the rear roller shaft, and the fifth rear roller is rotatably fitted on the sleeve.
- control system mainly includes a PLC programmable controller, a servo driver, a servo motor, and the like.
- a bell mouth is disposed between the combined rear roller and the middle roller, and the middle roller maintains a constant speed, and the first drafting unit forms a blending or color mixing unit, and the second drafting unit constitutes a simple Linear density adjustment unit.
- the mechanical structure is more compact, and the five rovings drawn by the five rear rollers are closer in the blending, which is effective Preventing the drive from interfering with the yarn during operation, and the five primary color yarns pass through the bell mouth, the clamping angle is smaller, which is more favorable for the yarn to be more evenly mixed and not easy to break.
- the speed of the middle roller is fixed and not greater than the sum of the speeds of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller.
- the point yarn, the slub yarn and the mixed color produced by the method and the device of the invention are more uniform and accurate, and the rotation of the constant setting speed in the control ensures that the blending effect is more stable, even if the yarn color difference of different batches There will be no obvious changes.
- the following table compares the technical effects of the present invention with the prior art.
- the method of the invention changes the conventional five-component front and rear zone synchronous drafting into five-component separated asynchronous drawing (hereinafter referred to as first-order asynchronous drawing) and five-component combined synchronous drawing (hereinafter referred to as secondary synchronous drawing)
- the spinning device and the process of the five-component split-type hetero-synchronous second-stage drafting and the twisting and twisting yarn of the invention can realize the random online dynamic control of the change of the linear density and the blending ratio of the spun yarn, and break through the original bamboo.
- Three technical bottlenecks in the spinning process 1 can only adjust the linear density change, can not adjust its blending ratio change (or color change); 2 bamboo yarn pattern is single; 3 bamboo pattern is poorly reproducible .
- Total equivalent draw ratio It is a very important parameter in spinning, which is the product of the draft ratio of the front zone and the draw ratio of the back zone.
- the five rovings are merged and twisted by the asynchronous drafting of the rear zone and the synchronous drafting of the front zone, and the blending ratio is k 1 , k 2 , k 3 , k 4 . , k 5 can be expressed as follows:
- Speed is related to the output of the spinning machine. Different spindle speeds are used in different companies, spinning different raw materials and product specifications. Thus, the blending ratio determined by the equations (8), (9), (10), and (11), even if the values of the rovings ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 , and ⁇ 5 are constant, V h1 and V h2 are caused by changes in the spindle speed. , V h3 , V h4 , V h5 change. This leads to uncertainty in the blending ratio.
- the yarn density of the five roving strips formed by two-stage drafting and then converging and twisting is:
- the yarn density is:
- the linear density of the yarn and the moving speeds V h1 , V h2 , V h3 , V h4 , V h5 at the combined roller and the five coarse yarn densities ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 , ⁇ 5 are related.
- the values of ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 , and ⁇ 5 are constants independent of time, and V h1 , V h2 , V h3 , V h4 , and V h5 are related to the spindle speed set by the spinning machine due to Spindle speed is related to the output of the spinning machine.
- the change in blending ratio is based on the baseline blending ratio when (V h1 +V h2 +V h3 +V h4 +V h5 ) ⁇ (V h1 + ⁇ V h1 +V h2 + ⁇ V h2
- the change in blending ratio is:
- V h1 +V h2 +V h3 +V h4 +V h5 V z , that is, the sum of the speeds of the five rear rollers is equal to the linear velocity of the middle roller, so the above five formulas: Can be simplified to:
- the blending ratio of the five components ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 and ⁇ 5 in the yarn is equal to the reciprocal of their respective draw ratios in the primary draw zone.
- the existing ring spinning process produces blended yarns, mainly by mixing raw materials or sliver mixing to produce a blended yarn of a certain blending ratio.
- the invention adopts the roving of different raw materials or colors to be mixed in the fine sand process, and can realize the spinning of various proportions of the blended yarn or the mixed color yarn in one step.
- Figure 1 is a schematic view of the principle of a secondary draft spinning device
- Figure 2 is a schematic view of the combined rear roller structure
- Figure 3 is a side view showing the structure of the secondary draft spinning device
- Figure 4 is a travel path diagram of the yarn in the secondary drawing in the embodiment
- Figure 5 is a schematic diagram of the structure of the control system.
- a five-component hetero-simulation drafting method for controlling yarn linear density and blending ratio specifically comprising:
- the drafting and twisting system includes a first-stage drafting unit and a second-stage drafting unit disposed before and after;
- the first stage drafting unit comprises a combined rear roller and a middle roller; the combined rear roller has five rotational degrees of freedom, and includes a first rear roller, a second rear roller, and a third rear roller arranged side by side on the same rear roller shaft.
- the fourth rear roller and the fifth rear roller; the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller are respectively at speeds V h1 , V h2 , V h3 , V h4 , and V h5 movement;
- the middle roller rotates at a speed V z ;
- the secondary synchronous drafting unit includes a front roller and the middle roller; the front roller rotates at a surface linear velocity V q ;
- the linear density of the component and the fifth roving component are ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 and ⁇ 5 , respectively, and the linear density of the yarn Y obtained by the pre-roller drawing and twisting is ⁇ y .
- Fig. 1 6, 8, 10, 12, and 14 are four movable rollers of a combined roller composed of mutually nested bushings, and 5, 7, 9, 11, and 13 are top rollers corresponding to the respective rear rollers. 4 is a middle roller and a top roller, and 1, 2 are a front roller and a top roller. 25, 26, 28, 30 are bearings.
- FIG. 2 is a five-degree-of-free combination rear roller with five nests, and six active rear rollers 6, 8, 8, 10, 12, and 14 are driven by the mandrel 20 and the pulleys 33, 34, 35, 36, respectively.
- Figure 3 shows a split-type asynchronous secondary drafting device for ring spinning. They represent the axis of the rear roller, the middle roller, and the front roller.
- the middle roller and the rear roller are defined to constitute a first stage draft
- the front roller and the middle roller constitute a secondary draft.
- the five rovings are respectively fed into the corresponding independent driving first-stage drafting mechanism for asynchronous drawing, and then simultaneously drawn and merged by the second drafting mechanism, and then twisted into yarn. Then the five rovings undergo separation and combined drafting and asynchronous and synchronous drafting, respectively.
- the surface speeds of the five back rollers that are nested with each other are V h1 , V h2 , V h3 , V h4 , V h5 , the surface speed of the middle roller is V z , and the surface speed of the front roller surface is V q .
- the five coaxial and outer diameter rear rollers respectively correspond to five coaxial upper and outer outer diameter top rollers, and the rear regions are arranged in five parallel rows, and the upper and lower corresponding upper and lower aprons hold the roving.
- the five roving strips are positioned by the yarn guide rod and the bell mouth during the drafting and twisting process, so that they follow the path shown in FIG.
- the linear density of the five whiskers becomes ⁇ 1 ′′, ⁇ 1 ′′, ⁇ 3 ′′, ⁇ 4 under the synchronous drafting of the front roller surface velocity V q . "and ⁇ 5 ", the five whiskers are joined to the front roller jaw c and then twisted together to form a yarn having a linear density of ( ⁇ 1 ′′ + ⁇ 2 ′′ + ⁇ 3 ′′ + ⁇ 4 ′′ + ⁇ 5 ′′ ). (The collapse effect is not considered here).
- the linear density of the yarn Y obtained by the pre-roller drawing and twisting is ⁇ y as follows:
- the secondary drafting unit includes a front roller and the middle roller; the front roller moves at a speed V q ;
- the specific linear density adjustment method is:
- the linear densities of the fourth yarn component and the fifth yarn component are ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 and ⁇ 5 , respectively, and the linear density of the yarn Y obtained by the pre-roller drawing and twisting is ⁇ y ,
- ⁇ y is the linear density change of the yarn Y
- ⁇ y is the linear density change of the yarn Y
- ⁇ y is the amount of change in linear density of yarn Y
- ⁇ y is the linear density change of the yarn Y
- T 1 and T 2 are time points and t is a time variable.
- the adjustment process is performed to adjust the speeds of the three rear rollers to zero, and after the other If the speed of the roller is not zero, the yarn components stretched by the three rear rollers in the yarn Y are successively interrupted, while the other yarn components are continuous, and the linear density ⁇ of the adjusted yarn Y is y is:
- T 1 , T 2 and T 3 are time points and t is a time variable.
- T 1 , T 2 , T 3 and T 4 are time points
- V h1 * ⁇ 1 +V h2 * ⁇ 2 +V h3 * ⁇ 3 +V h4 * ⁇ 4 +V h5 * ⁇ 5 constant
- the linear density of the yarn Y is changed without changing the blending ratio of the components; the first yarn component and the second yarn component, the third yarn component, the fourth yarn component, and
- the blending ratios k 1 , k 2 , k 3 , k 4 and k 5 of the fifth yarn component are:
- V h1 +V h2 +V h3 +V h4 +V h5 V z , that is, the sum of the speeds of the five rear rollers is equal to the linear velocity of the middle roller, then:
- the blending ratio of the five yarn components ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 and ⁇ 5 in the yarn Y is equal to the reciprocal of their respective draw ratios in the first drafting zone
- a combiner is disposed between the combined rear roller and the middle roller, and the middle roller maintains a constant speed, the first drafting unit forms a blending or color mixing unit, and the second drafting unit constitutes a simple linear density. Adjust the unit.
- the yarn blending is more uniform and thorough, and the influence of the linear density adjustment process on the blending process is avoided.
- the speed of the middle middle roller to (V h1 + V h2 + V h3 + V h4 + V h5 ) / 5 or less, the blending can be more effectively ensured.
- the method of this embodiment is basically the same as that of Embodiment 1, except that:
- the yarn Y is divided into n segments, the linear density and the blending ratio of each yarn Y are the same, and the linear density or blending ratio of the adjacent two segments is different;
- the linear velocities of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller and the fifth rear roller are V h1i , V h2i , V h3i , V h4i , respectively.
- the blending ratios k 1i , k 2i , k 3i , k 4i and k 5i can be expressed as follows:
- the linear density of the yarn of the i-th segment is:
- the section with the smallest line density of the n-segment Y be defined as the reference line segment, the reference line density of the segment is ⁇ 0 , and the first rear roller, the second rear roller, the third rear roller, and the fourth of the segment
- the reference linear velocities of the rear roller and the fifth rear roller are V h10 , V h20 , V h30 , V h40 and V h50 respectively ; the first roving component, the second roving component, the third roving component, the first segment of the segment
- the reference blending ratios of the four roving components and the fifth roving component are k 10 , k 20 , k 30 , k 40 and k 50 , respectively.
- V z V h10 +V h20 +V h30 +V h40 +V h50 (8);
- the reference speeds V h10 , V h20 , V h30 , V h40 and V h50 of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller and the fifth rear roller are according to the first roving component Material of the second roving component, the third roving component, the fourth roving component and the fifth roving component, the reference line density ⁇ 0 and the reference blending ratios k 10 , k 20 , k 30 , k 40 and k 50 Set in advance;
- the rotation speed of the fifth rear roller realizes the online dynamic adjustment of the linear density or/and the blending ratio of the yarn i of the i-th stage.
- the linear density of the yarn Y is increased by the dynamic line increment ⁇ yi based on the reference line density, that is, the thickness change ⁇ yi ;
- the linear velocities of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller are respectively incremented on the basis of the reference linear velocity, that is, (V h10 +V h20 +V H30 +V h40 +V h50 ) ⁇ (V h10 + ⁇ V h1i +V h20 + ⁇ V h2i +V h30 + ⁇ V h3i +V h40 + ⁇ V h4i +V h50 + ⁇ V h5i ), the increase of yarn Y-line density for:
- the linear density variation of the yarn Y is achieved by controlling the sum of the linear velocity increments ⁇ V i of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller.
- Adjusting the blending ratio of the yarn Y by controlling the linear velocity increments of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller;
- ⁇ V h5i k 5i *(V z + ⁇ V i )-V h50 .
- V h1i , V h2i , V h3i , V h4i and V h5i be zero, and the others are not zero, then the 1-4 kinds of roving components in the yarn i of the i-th segment are realized. continuous.
- the method of this embodiment is basically the same as that of Embodiment 1, except that:
- the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth rear roller are respectively drawn with five primary color yarns of yellow, magenta, cyan, black, and white; the front roller speed V is maintained.
- q Constant adjust the speed of the first rear roller, the second rear roller, the third rear roller, the fourth rear roller and the fifth rear roller to realize the color matching of the yarn; when mixing, adjust the color spinning with the black yarn.
- the color depth or saturation using white to adjust the color density or brightness of the color spinning, and using different proportions of white and black to obtain a variety of different shades.
- the method for dynamically configuring the linear density and the blending ratio of the five-component asynchronous drafting of the present embodiment is basically the same as that of the second embodiment, except that:
- the initial line speeds of the first rear roller, the second rear roller, the third rear roller, and the fourth rear roller are set to V h10 , V h20 , V h30 , V h40 , and V h50 , respectively ;
- the initial linear velocity of the middle roller V z0 V h10 +V h20 +V h30 +V h40 +V h50 ;
- V zi V h1(i-1) +V h2(i-1) +V h3(i-1) +V h4(i-1) +V h5(i-1) ;
- the linear density and the blending ratio of the yarn Y of the i-1th stage are respectively taken as the reference line density of the i-th stage and the reference blending ratio, and the setting of the i-th stage is known.
- Calculating the first rear roller, the second rear roller, the third rear roller, the fourth rear roller, and the fifth, under the premise of the linear density ⁇ yi and the set blending ratios k 1i , k 2i , k 3i , k 4i , and k 5i The linear velocity of the rear roller V h1i , V h2i , V h3i , V h4i and V h5i ;
- the rotational speeds of the first rear roller and/or the second rear roller are adjusted to achieve on-line dynamic adjustment of the linear density or/and the blending ratio of the i-th yarn Y.
- the ratio is constant, so that the middle roller and the front roller are continuously adjusted with the speed of the rear combination roller, avoiding the large adjustment of the yarn pulling ratio due to the excessive adjustment of the rear roller and the front roller speed due to the excessive adjustment of the rear combination roller. And effectively control the occurrence of yarn breakage.
- the speed of each roller can be recorded at any time by using a computer or other intelligent control unit.
- the speeds of the next middle roller and the front roller can be automatically calculated, and the formula and model are used to quickly calculate
- the speed increase and decrease of the roller the set blending ratio and the linear density adjustment are realized, thereby making it simpler and more accurate.
- the utility model relates to a five-component two-stage drafting spinning of a colorful bamboo joint and a spun yarn, comprising a control system and an actuator.
- the actuator comprises a five-component split type synchronous secondary drafting mechanism, a twisting mechanism and a winding forming method.
- the second drafting mechanism comprises a primary drafting unit and a secondary drafting unit;
- the primary drafting unit includes a combined rear roller 15 and a middle roller 3; the combined rear roller 15 has five rotational degrees of freedom, including a first rear roller 6 disposed side by side on the same rear roller shaft 20. a second rear roller 8, a third rear roller 10, a fourth rear roller 12, and a fifth rear roller 14; the secondary drafting unit includes a front roller 1 and a middle roller 3.
- 4 is a middle roller corresponding to the middle roller 3
- 5 7, 9, 11, and 13 are five top rollers corresponding to the five rear rollers.
- 2 is a top roller corresponding to the front roller 1.
- the five-degree-of-freedom combination rear roller with five nests, six, eight, eight, twelve, and four five active loops are looped on the same mandrel 20, and are respectively driven by pulleys 35, 36, 32, 33 and 34 drives.
- the five rear rollers are disposed adjacent to each other, and the drive mechanism pulleys 35, 36, 32, 33, and 34 are disposed on both sides of the five rear rollers.
- the mechanical structure is more compact, and the five rovings drawn by the five rear rollers are closer in the blending, which is effective Preventing the drive from interfering with the yarn during operation, and the five primary color yarns pass through the bell mouth, the clamping angle is smaller, which is more favorable for the yarn to be more evenly mixed and not easy to break.
- the control system mainly includes a PLC programmable controller, a servo driver, a servo motor, and the like.
- the programmable controller controls the motor to drive the roller, the program board, the spindle and the like through the servo driver.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
| 混色模式 | 颜色数 | |
| 单色模式 | A、B、C、D、E | 5 |
| 双色混色模式 | AB,AC、AD、AE、BC、BD、BE、CD、CE、DE | 9*10=90 |
| 三色混色模式 | ABC、BCD、CDE、DEA、EAB | 36*5=180 |
| 四色混色模式 | ABCD、BCDE、CDEA、DEAB、EABC | 82*5=410 |
| 五色混色模式 | ABCDE混色 | 28*3-2=82 |
| 合计 | 248 |
Claims (19)
- 一种五组份异步牵伸动态配置线密度和混纺比的方法,其特征在于,具体包括:1)执行机构主要包括五组份分合式异同步二级牵伸机构、加捻机构和卷绕成型机构,所述五组份分合式异同步二级牵伸机构包括前后设置的一级异步牵伸单元、二级同步牵伸单元;2)所述一级异步牵伸单元包括组合后罗拉、中罗拉;组合后罗拉具有五个转动自由度,其包括同一根后罗拉轴上并排设置的第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉;第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉分别以速度Vh1、Vh2、Vh3、Vh4和Vh5运动;中罗拉以速度Vz的速度转动;所述二级同步牵伸单元包括前罗拉和所述中罗拉;前罗拉以表面线速度Vq转动;设第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉所牵伸的第一粗纱组份、第二粗纱组份、第三粗纱组份、第四粗纱组份和第五粗纱组份的线密度分别为ρ1、ρ2、ρ3、ρ4和ρ5,前罗拉牵伸加捻后得到的纱线Y的线密度为ρy,第一粗纱组份、第二粗纱组份、第三粗纱组份、第四粗纱组份和第五粗纱组份的混纺比k1、k2、k3、k4和k5表达如下:3)保持前罗拉和中罗拉线速度之比Vq/Vz恒定,前罗拉和中罗拉线的速度大小取决于纱线的基准线密度;4)通过调整第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的转速,实现纱线Y线密度或/和混纺比的在线动态调整。
- 如权利要求1所述方法,其特征在于,令ρ1=ρ2=ρ3=ρ4=ρ5=ρ,则:1)改变第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉中的任一后罗拉的速度,其它四个后罗拉速度不变,则实现纱线Y中所述任一后罗拉的所牵伸的纱线组份及其线密度的变化,调整后的纱线Y的线密度ρ′y为:其中,Δρy为纱线Y的线密度变化量,ΔVhi为第i后罗拉的速度变化量,i=1,2,3,4,5;2)改变第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉中中的任意两个后罗拉的速度,其它三个后罗拉速度不变,则实现纱线Y中所述任意两个后罗拉的所牵伸的纱线组份及其线密度的变化,调整后的纱线Y的线密度ρ′y为:其中,Δρy为纱线Y的线密度变化量,ΔVhj和ΔVhk为第j和k后罗拉的速度变化量,j≠k;j=1,2,3,4,5;k=1,2,3,4,5;3)同时改变第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉中的任意三个后罗拉的速度,剩余的后罗拉速度不变,则实现纱线Y中三个后罗拉的所牵伸的纱线组份及其线密度的变化,调整后的纱线Y的线密度ρ′y为:其中,Δρy为纱线Y的线密度变化量,ΔVhj、ΔVhk和ΔVhm为第j、k和m后罗拉的速度变化量,j≠k≠m;j=1,2,3,4,5;k=1,2,3,4,5;m=1,2,3,4,5;4)同时改变第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉中的任意四个后罗拉的速度,剩余的后罗拉速度不变,则实现纱线Y中四个后罗拉的所牵伸的纱线组份及其线密度的变化,调整后的纱线Y的线密度ρ′y为:其中,Δρy为纱线Y的线密度变化量,ΔVhj、ΔVhk、ΔVhm和ΔVhn为第j、k、m和n后罗拉的速度变化量,j≠k≠m≠n;i=1,2,3,4,5;j=1,2,3,4,5;k=1,2,3,4,5;m=1,2,3,4,5;n=1,2,3,4,5;5)同时改变第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的速度,且五个后罗拉的速度之和不为零,则实现纱线Y中五个后罗拉的所牵伸的纱线组份及其线密度的变化,调整后的纱线Y的线密度ρ′y为:6)改变第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的速度,调整过程中令任一后罗拉的速度为零,其他四个后罗拉的速度不为零,则实现纱线Y中所述任一后罗拉所牵伸的纱线组份的不连续,而其它四种纱线组份连续,调整后的纱线Y的线密度ρ′y为:其中,r≠s≠m≠n;r=1,2,3,4,5;s=1,2,3,4,5;m=1,2,3,4,5;n=1,2,3,4,5;7)改变第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的速度,调整过程中令任两个后罗拉的速度为零,其他三个后罗拉的速度不为零,则实现纱线Y中所述任两个后罗拉所牵伸的纱线组份的不连续,而其它三种纱线组份连续,调整后的纱线Y的线密度ρ′y为:其中,r≠s≠m;r=1,2,3,4,5;s=1,2,3,4,5;m=1,2,3,4,5;8)改变第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的速度,调整过程中令任三个后罗拉的速度为零,其他两个后罗拉的速度不为零,则实现纱线Y中所述任三个后罗拉所牵伸的纱线组份的不连续,而其它两种纱线组份连续,调整后的纱线Y的线密度ρ′y为:其中,r≠s,r=1,2,3,4,5;s=1,2,3,4,5;9)改变第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的速度,调整过程中令任四个后罗拉的速度为零,其他一个后罗拉的速度不为零,则实现纱线Y中所述任四个后罗拉所牵伸的纱线组份的不连续,而其它两种纱线组份连续,调整后的纱线Y的线密度ρ′y为:
- 如权利要求1所述方法,其特征在于,根据设定混纺比和/或线密度,将所述纱线Y分为n段,每段纱线Y的线密度和混纺比相同,而相邻两段的线密度或混纺比不同;牵伸第i段纱线Y时,第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的线速度分别为Vh1i、Vh2i、Vh3i、Vh4i和Vh5i,其中i∈(1,2,…,n);所述第一粗纱组份、第二粗纱组份、第三粗纱组份、第四粗纱组份和第五粗纱组份经两级牵伸和加捻形成的第i段纱线Y后,其混纺比k1i、k2i、k3i、k4i和k5i可表达如下:第i段纱线Y的线密度为:(1)设将n段纱线Y中线密度最小的一段定义为基准线段,该段的基准线密度为ρ0,以及该段的第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的基准线速度分别为Vh10、Vh20、Vh30、Vh40和Vh50;该段的第一粗纱组份、第二粗纱组份、第三粗纱组份、第四粗纱组份和第五粗纱组份的基准混纺比分别为k10、k20、k30、k40和k50,保持所述中罗拉的线速度恒定,且Vz=Vh10+Vh20+Vh30+Vh40+Vh50 (8);其中,第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的基准线速度Vh10、Vh20、Vh30、Vh40和Vh50根据第一粗纱组份、第二粗纱组份、第三粗纱组份、第四粗纱组份和第五粗纱组份的材质、基准线密度ρ0以及基准混纺比k10、k20、k30、k40和k50提前设定;(2)牵伸混纺第i段纱线Y时,在已知第i段的设定线密度ρyi和设定混纺比k1i、k2i、k3i、k4i和k5i前提下,根据公式(2)-(8)计算出所述第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的线速度Vh1i、Vh2i、Vh3i、Vh4i和Vh5i;(3)在基准线段的基准线速度Vh10、Vh20、Vh30、Vh40和Vh50基础上,增减第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和/或第五后罗拉的转速,实现第i段纱线Y的线密度或/和混纺比的在线动态调整。
- 如权利要求10所述方法,其特征在于,设ρ1=ρ2=ρ3=ρ4=ρ5=ρ,则公式(7)简化为:根据公式(2)-(6)和(8)-(9)计算出所述第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的线速度Vh1i、Vh2i、Vh3i、Vh4i和Vh5i;在基准线速度Vh10、Vh20、Vh30、Vh40和Vh50的基础上,增减第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和/或第五后罗拉的转速实现设定的第i段纱线Y线密度或/和混纺比。进一步,在纱线Y从第i-1段转换到第i段的瞬间,设纱线Y的线密度在基准线密度的基础上增加动态增量Δρyi,即粗细变化Δρyi;为此所述第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的线速度分别在基准线速度的基础上发生相应增量,即(Vh10+Vh20+Vh30+Vh40+Vh50)→(Vh10+ΔVh1i+Vh20+ΔVh2i+Vh30+ΔVh3i+Vh40+ΔVh4i+Vh50+ΔVh5i)时,纱线Y线密度的增量为:则纱线Y的线密度ρyi可表达如下:令ΔVi=ΔVh1i+ΔVh2i+ΔVh3i+ΔVh4i++ΔVh5i,则(10)变为:通过控制所述第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的线速度增量之和ΔVi实现纱线Y的线密度变化。
- 如权利要求12所述方法,其特征在于,令Vh1i*ρ1+Vh2i*ρ2+Vh3i*ρ3+Vh4i*ρ4+Vh5i*ρ5=H,H为常数,则ΔVi恒为0,由此,实现所述纱线Y的混纺比调整的同时保证线密度不变。
- 如权利要求12所述方法,其特征在于,令ΔVh1i、ΔVh2i、ΔVh3i、ΔVh4i和ΔVh5i都不为零,则实现所述纱线Y中五种粗纱组份的变化。
- 如权利要求12所述方法,其特征在于,令Vh1i、Vh2i、Vh3i、Vh4i和Vh5i其中1-4个为零,而其它不为零,则实现在第i段纱线Y中1-4种粗纱组份的不连续。
- 如权利要求1所述方法,其特征在于,所述第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉分别所牵伸着黄邑、品红邑、青邑、黑邑和白色五种基色纱线;保持前罗拉速度Vq恒定,调整第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉的速度,则实现纱线的邑彩调配;混色时,利用黑色纱线调整邑纺纱的色深或饱和度,利用白邑调整邑纺纱的色浓或亮度,以及利用不同比例的白邑和黑邑获得各种不同的邑调。
- 实施权利要求1-17任一方法的一种五组份异同步牵伸调控纱线线密度及混纺比的装置,其特征在于,其包括控制系统和执行机构,执行机构包括五组份分合式异同步二级牵伸机构、加捻机构和卷绕成型机构;所述二级牵伸机构包括一级牵伸单元和二级牵伸单元;所述一级牵伸单元包括组合后罗拉、中罗拉;组合后罗拉具有五个转动自由度,包括同一根后罗拉轴上并排设置的第一后罗拉、第二后罗拉、第三后罗拉、第四后罗拉和第五后罗拉;五个所述后罗拉依次相邻设置,其驱动机构设置在五个后罗拉的两侧;所述二级牵伸单元包括前罗拉和所述中罗拉。
- 如权利要求18所述装置,其特征在于,所述第三后罗拉固定设置在所述后罗拉轴上;其他四个后罗拉分别对称设置在第三后罗拉的两侧,五个后罗拉彼此能够独立转动;所述第二后罗拉设置有与其驱动机构连接的第二轴套,第二轴套套装在所述后罗拉轴上,所述第一后罗拉可转动地套装在第二轴套上;所述第四后罗拉设置有与其驱动机构连接的第四轴套,第四轴套套装在后罗拉轴上,所述第五后罗拉可转动地套装在该轴套上。
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| US10316435B2 (en) * | 2015-03-27 | 2019-06-11 | Jiangnan University | Method and device of dynamically configuring linear density and blending ratio of yarn by two-ingredient asynchronous/synchronous drafted |
| WO2016155163A1 (zh) * | 2015-03-27 | 2016-10-06 | 江南大学 | 四组份异步牵伸动态配置纱线线密度和混纺比的方法及装置 |
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| CN104726989A (zh) * | 2015-03-27 | 2015-06-24 | 江南大学 | 基于cmykw五基色粗纱耦合牵伸实现混配色纺纱的方法及装置 |
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- 2015-07-28 US US15/123,651 patent/US10316434B2/en not_active Expired - Fee Related
- 2015-07-28 WO PCT/CN2015/085268 patent/WO2016155165A1/zh not_active Ceased
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Also Published As
| Publication number | Publication date |
|---|---|
| US10316434B2 (en) | 2019-06-11 |
| US20170073849A1 (en) | 2017-03-16 |
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