CN109610053B - Spinning method with super-high drafting - Google Patents
Spinning method with super-high drafting Download PDFInfo
- Publication number
- CN109610053B CN109610053B CN201811390391.7A CN201811390391A CN109610053B CN 109610053 B CN109610053 B CN 109610053B CN 201811390391 A CN201811390391 A CN 201811390391A CN 109610053 B CN109610053 B CN 109610053B
- Authority
- CN
- China
- Prior art keywords
- zone
- draft
- drafting
- roller
- jaw
- 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.)
- Active
Links
Images
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
- D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
-
- 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
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/44—Adjusting drafting elements, e.g. altering ratch
-
- 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
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
Abstract
The invention relates to a spinning method of super-large draft, twisting fiber strips sequentially pass through a rear draft zone, a middle draft zone and a front draft zone, double-rubber-ring draft is adopted in the rear draft zone and the front draft zone respectively, meanwhile, gathering is carried out in the middle draft zone, the draft multiple of the middle draft zone is controlled to be 1, so as to realize super-large draft, a free zone is arranged between a rear roller jaw and a double-rubber-ring jaw in the rear draft zone, a free zone is arranged between a front roller jaw and the double-rubber-ring jaw in the front draft zone, the free zone refers to a zone without friction force action, and a double-rubber-ring draft system mainly comprises an upper pin frame and a lower pin rod which are arranged up and down and are mutually matched, a tensioner arranged below the side of the lower pin rod, an upper rubber ring sleeved on a middle leather roller and an upper pin frame, and a rear lower rubber ring sleeved on the middle roller, the lower pin rod and. The method realizes the super-large drafting of the yarn on the premise of ensuring the quality of the yarn, and has extremely good popularization value.
Description
Technical Field
The invention belongs to the technical field of spinning, and relates to a spinning method with ultra-large draft, in particular to a spinning method with ultra-large draft of a bidirectional extension rubber ring jaw of a spinning frame.
Background
The ring spinning is a mechanical spinning method that twisting is carried out by a spindle, a ring and a traveller and drafting is carried out by a roller, and is a spinning mode which is developed most mature and used most widely in the prior spinning technology.
Compared with other novel spinning technologies, the ring spinning technology has the disadvantage of longer flow, because the general flow of spinning the common ring spun yarn is cotton distribution → cotton opening → cotton carding → drawing → roving → spun yarn, that is, the uniform fiber strips drawn by a drawing frame need to be made into roving for a spinning frame through a roving process, if the spun yarn is directly spun by the fiber strips, the spinning process needs larger drafting multiple, the larger the drafting multiple is, the larger the speed difference among the drafting devices is, the more difficult the drafting process is to control, the quality indexes of the spun yarn such as evenness and thickness and detail are poorer, and the spun yarn is difficult to meet the quality requirement.
The drafting device of the existing ring spinning frame generally comprises three rollers and three leather rollers, and comprises a rear roller, a middle roller, a front roller and corresponding leather rollers, wherein the area between the rear roller and the middle roller forms a rear drafting zone, the drafting multiple of the rear drafting zone to fiber strands is generally 1-1.5 times, the main function is to destroy the twist of twisted fiber strands and prepare for the drafting of the front drafting zone, the area between the front roller and the front leather roller and the middle roller and the area between the middle roller and the middle roller as well as an upper rubber ring, a lower rubber ring and a pin rod form a front drafting zone, the drafting multiple is generally 30-50 times, the larger drafting multiple of the front drafting zone of the ring spinning frame is because the upper rubber ring, the lower rubber ring and the pin rod form a forward extending rubber ring jaw, and plays a role in holding and controlling floating fibers in the drafting zone. However, since drafting is an important influence factor causing sliver unevenness, the larger the draft multiple is, the larger the sliver unevenness is, and if the spun yarn is spun by directly using the fiber sliver, it is difficult for the existing ring spinning frame to directly produce the corresponding spun yarn by drafting the fiber sliver with the extra-large multiple on the premise of meeting the quality requirement.
In addition, some researchers form two or more forward extending rubber ring jaws to realize holding control of fibers by increasing the number of the jaws, but a very critical problem in realizing fiber strip drafting by a multi-rubber ring jaw or a multi-drafting zone is that: in the multistage co-current drawing of fiber strands, the drawing waves in the upstream drawing zone are superimposed on the drawing waves in the downstream drawing zone, resulting in a severe deterioration of the linear density distribution. Thus, simply increasing the apron nip or both the apron nip and the drafting zone does not maintain the drafting quality while proportionally increasing the drafting capacity.
Therefore, it is very important to research a spinning method and a spinning device which can realize high quality and super-large multiple drafting of fiber strips.
Disclosure of Invention
The object of the present invention is to overcome the problems of the prior art mentioned above and to provide a spinning method which enables high quality and very high draft of the fiber sliver.
In order to achieve the purpose, the invention adopts the technical scheme that:
a spinning method of ultra-large draft, will have twisting the fiber strip to pass the back draft zone, middle draft zone and front draft zone sequentially, adopt the drafting of the double-rubber ring in back draft zone and front draft zone separately, gather and control its draft multiple to be 1 in the middle draft zone at the same time in order to realize the ultra-large draft;
and a free area is arranged between the back roller jaw and the double-rubber-ring jaw in the back drafting area, a free area is arranged between the front roller jaw and the double-rubber-ring jaw in the front drafting area, and the free area is an area without friction force.
The essence of the spinning process is the process of drawing and thinning a fiber assembly (such as twisted fiber strips), in the drawing process, the speed of each part needs to be gradually increased from back to front, the drawing needs to have three conditions of speed difference, space and pressure, the fiber can be changed from a floating uncontrolled state to a controlled state in the drawing process, the point of the change is a fiber speed change point, and the change process is controlled by a friction force boundary. When the fiber is always controlled by the friction force boundary in the drafting process, the fiber speed change points in the whole fiber strand are unified, namely the displacement deviation of the fiber is smaller, the speed is kept consistent, the uniformity degree of the thickness of the formed yarn is better, the thickness is smaller, when the friction force boundary is narrower, the fiber is only partially controlled by the friction force boundary in the drafting process, the fiber speed change points are not unified, namely the displacement deviation of the fiber is larger, and therefore the quality of the spun yarn is poorer.
The twisted fiber strip of the invention passes through a back drafting zone, a middle drafting zone with a drafting multiple of 1 and a front drafting zone in sequence, and the process is as follows:
(1) the rear drafting zone is internally provided with a double-rubber-ring jaw extending backwards, namely the rear double-rubber-ring jaw is close to the rear roller jaw, a fiber speed change point in the rear drafting zone moves towards the rear roller jaw and simultaneously the friction force boundary is widened, so that the fiber speed change point in the rear drafting zone is relatively concentrated, and the displacement deviation of the rear end of the fiber is reduced, therefore, the drafting multiple of the rear drafting zone can be increased, and simultaneously, the straightening of the front hook fiber is facilitated due to the adoption of the larger drafting multiple of the rear drafting zone;
(2) the middle drafting zone gathers the fiber strands, the fiber strands diverged by the drafting of the rear drafting zone can be effectively gathered, the drafting multiple of the front drafting zone is increased, the middle drafting zone can completely separate the rear drafting zone from the front drafting zone when the drafting multiple is 1, no connection exists between the rear drafting zone and the front drafting zone, the spinning stability is improved, the drafting multiple is improved, and the yarn quality is guaranteed;
(3) preceding draft zone has set up the two rubber ring that extend forward and has kept silent and just preceding two rubber ring is kept silent and is close to preceding roller and keeps silent, the fibre variable speed point in the preceding draft zone is kept silent to the roller and is removed simultaneously the frictional force field and widen forward, make the fibre variable speed point in the preceding draft zone concentrate relatively, reduce fibre front end displacement deviation, therefore draft zone draft multiple can increase, simultaneously owing to adopt great preceding draft zone draft multiple, be favorable to straightening of crotch behind the fibre, thereby under the prerequisite of guaranteeing the spinning quality and realized having twisted with fingers the super large draft of fiber strip.
As a preferred technical scheme:
in the spinning method with ultra-high draft, the draft multiples of the back draft zone and the front draft zone are respectively 5-7 times and 51.6-62 times, and the total draft multiple of the back draft zone, the middle draft zone and the front draft zone is 310-430.5 times. The total drafting multiple of the drafting device of the existing ring spinning frame to the twisted roving is 30-80 times, and the drafting multiple of the fiber strips is obviously improved by the method.
According to the spinning method with the ultra-large draft, the distance between the double-rubber-ring jaw and the rear roller jaw in the rear draft zone is 5-15 mm, the fiber speed change point in the rear draft zone can be intensively moved to the rear roller jaw within the range, the displacement deviation of the rear end of the fiber is reduced, meanwhile, the friction and holding effect on fiber strips can be increased by using the rear double-rubber-ring jaw, the draft multiple of the rear draft zone is increased, and the straightening of a front hook of the fiber is facilitated; the double-rubber-ring jaw in the front drafting zone and the distance between the front roller jaw are 5-15 mm, fiber speed change points in the front drafting zone can be intensively moved forwards to the front roller jaw in the range, the shift deviation of the front end of the fiber is reduced, the holding effect on fiber strips can be increased by utilizing the front double-rubber-ring jaw, the drafting multiple of the front drafting zone is improved, and the straightening of a hook behind the fiber is facilitated. The distance between the double-rubber-ring jaw and the corresponding roller jaw of the double-rubber-ring jaw comprises but is not limited to the distance, the distance can be adjusted in a proper range, but is not too large, the distance between the double-rubber-ring jaw and the corresponding roller jaw is too large, the friction force range in a drafting zone is reduced, the speed change points of fibers are not concentrated, when the ultra-large drafting is carried out, the quality of yarns is deteriorated, the distance is too small, the speed change point of the fibers is too close to the roller jaw, and the fibers are easily damaged due to the excessive drafting force.
In the spinning method with ultra-high drafting, the length of the friction force boundary in the running direction of the twisted fiber strip in the back drafting zone or the front drafting zone is 77.2-88.6% of the length of the twisted fiber strip in the drafting zone.
In the spinning method with ultra-large drafting, before drafting, the twist of the twisted fiber strip is 5-20 twist/m, and the quantitative is 15-30 g/5 m. Twisted fiber strands to which the method of the present invention is applicable include, but are not limited to, twisted fiber strands, only some of which are commonly used.
In the spinning method with ultra-high drafting, the back drafting zone is an area between a pair of back leather rollers and back rollers and a pair of first middle leather rollers and first middle rollers;
the middle drafting zone is an area between a pair of first middle leather rollers and first middle rollers and a pair of second middle leather rollers and second middle rollers;
the front drafting zone is an area between a pair of second middle leather rollers and second middle rollers and a pair of front leather rollers and front rollers;
each pair of rollers and leather rollers are arranged up and down.
The method for spinning with ultra-large draft adopts a double-rubber-ring draft in the back draft zone, and comprises the following steps:
arranging a rear upper pin frame and a rear lower pin rod which are vertically arranged and matched with each other in a rear drafting zone, arranging a rear tensioner below the side of the rear lower pin rod, sleeving the rear upper rubber ring on a first middle leather roller and the rear upper pin frame, sleeving the rear lower rubber ring on a first middle roller, the rear lower pin rod and the rear tensioner, controlling the position of the rear tensioner to enable the rear lower rubber ring to be tensioned and tightly attached to a strand attaching surface of the rear lower pin rod, and controlling the positions of the rear upper pin frame and the rear lower pin rod to enable the strand attaching surfaces of the rear upper rubber ring and the rear lower rubber ring to be attached to each other;
the front drafting zone adopts a double-rubber-ring drafting implementation mode as follows:
the method comprises the steps of arranging a front upper pin frame and a front lower pin rod which are vertically arranged and matched with each other in a front drafting zone, arranging a front tensioner below the side of the front lower pin rod, sleeving a front upper rubber ring on a second middle leather roller and the front upper pin frame, sleeving the front lower rubber ring on a second middle roller, a front lower pin rod and the front tensioner, controlling the position of the front tensioner to enable the front lower rubber ring to be tensioned and tightly attached to a strand attaching surface of the front lower pin rod, and controlling the positions of the front upper pin frame and the front lower pin rod to enable the strand attaching surfaces of the front upper rubber ring and the front lower rubber ring to be attached to each other.
In the spinning method with ultra-high draft, the shapes of the rear upper pin rack and the rear lower pin rod are respectively the same as those of the front upper pin rack and the front lower pin rod; the binding surfaces of the fiber strips of the front upper pin frame and the front lower pin rod are both composed of a plane and an upward convex cambered surface.
In the spinning method with ultra-high draft, the condensing in the middle draft zone is realized by the following steps: a gathering element is arranged between the first middle leather roller and the first middle roller and between the second middle leather roller and the second middle roller;
the gathering element is a fixed or rolling buncher;
the buncher is in a roller shape or a horn mouth shape, a groove is arranged on the circumferential surface of the roller in a surrounding mode, the cross section of the groove is in a trapezoid shape, the lower bottom and the upper bottom of the trapezoid respectively correspond to the notch and the groove bottom of the groove, the length of the trapezoid is 3-6 mm and 1-4 mm respectively, and the caliber of the horn mouth is 2-4 mm;
the number of the roller-shaped bunchers is 2, the roller-shaped bunchers are respectively positioned above and below the running direction of the twisted fiber strips and respectively and correspondingly close to the second middle roller jaw and the first middle roller jaw;
the number of the horn-shaped bunchers is 1, and the horn-shaped bunchers are close to the second middle roller jaw.
The linear speed of the front roller is 6759-36500 mm/min, the linear speed of the front roller of the invention includes but is not limited to the linear speed, the linear speed of the front roller is changed according to the rotating speed of the existing spindle, the thickness of the twisted fiber strip for spinning and the twist of the spun yarn, the linear speed of the first middle roller and the linear speed of the second middle roller are the same, so that the drafting multiple of the middle drafting zone is 1, the better bundling effect on the fiber strands can be achieved, the front drafting zone and the rear drafting zone are effectively separated, the fiber is not simultaneously subjected to the mutual traction of the driving force of the front drafting zone and the rear drafting zone, and the running stability of the front drafting zone and the rear drafting zone can be improved.
The invention mechanism is as follows:
in order to ensure the quality of spun yarns and eliminate the hooking phenomenon of fibers as much as possible, the invention adopts a forward drafting mode, and twisted fiber strips sequentially pass through a rear drafting zone, a middle drafting zone with the drafting multiple of 1 and a front drafting zone so as to realize ultra-large drafting spinning and ensure the quality of yarns prepared by spinning, and the specific analysis is as follows:
when twisted fiber strips pass through the back drafting zone, because the back drafting zone is provided with back double rubber rings (a back upper rubber ring and a back lower rubber ring) which extend backwards, a back double rubber ring jaw is close to a back roller jaw, fibers are held and friction-controlled by the back upper rubber ring and the back lower rubber ring at the position close to the back roller jaw, the fibers are intensively moved to the position close to the back roller jaw after the speed change point of the back drafting zone, the friction force range of the whole back drafting zone is wide, the fibers can be controlled in advance by the back double rubber ring jaw which extends reversely, and the speed change points of the fibers in the back drafting zone are relatively concentrated, so that the displacement deviation of the rear end of the fibers is reduced, the phenomenon of uneven yarn caused by poor control of fiber movement is reduced, the number of floating fibers is reduced, and the improvement of the drafting multiple of the back drafting zone is facilitated;
the buncher can effectively gather fiber strips scattered by drafting in the rear drafting zone when the fiber strips pass through the middle drafting zone, so that the fiber arrangement effect is achieved, twisted fiber strips are subjected to preliminary drafting in the rear drafting zone and are arranged in the middle drafting zone, the fiber strips are scattered, fibers are arranged in the fiber strips in a preliminary ordered manner, the drafting in the front drafting zone and the drafting multiple of the fiber strips are favorably improved, the drafting multiple of the middle drafting zone is 1, the front drafting zone and the rear drafting zone are effectively separated, the fiber is not subjected to mutual drafting of the driving force of the front drafting zone and the driving force of the rear drafting zone at the same time, the stability of the operation of the front drafting zone and the rear drafting zone can be improved, the drafting multiple can be improved, and the quality of yarns can be ensured;
when the fiber strip passes through the front drafting zone, because the front drafting zone is provided with the front double rubber rings (the front upper rubber ring and the front lower rubber ring) which extend forwards, the front double rubber ring jaw is close to the front roller jaw, the fiber is held and friction-controlled by the front upper rubber ring and the front lower rubber ring when being close to the front roller jaw, the fiber speed change point of the front drafting zone of the fiber is intensively moved forwards to the vicinity of the front roller jaw, the friction force boundary of the whole front drafting zone is wider, the fiber speed change point of the front drafting zone of the fiber is relatively centralized, the shift deviation of the front end of the fiber is reduced, and the phenomenon of uneven yarn caused by poor control of fiber motion is reduced.
Advantageous effects
(1) According to the spinning method with the ultra-large draft, the upper rubber ring and the lower rubber ring are arranged in the front drafting area and the rear drafting area, so that fiber speed change points in the front drafting area and the rear drafting area are relatively concentrated, friction force boundaries in the front drafting area and the rear drafting area are widened, holding and friction control over fiber strands are achieved, and ultra-large multiple drafting of twisted fiber strands is achieved;
(2) according to the device adopting the spinning method with the ultra-large draft, the rear double-rubber-ring jaw extending reversely is arranged in the rear draft zone, so that the speed change point of the rear draft zone is intensively moved to the rear roller jaw, the shift deviation of the rear end of the fiber is reduced, meanwhile, the draft multiple of the rear draft zone is larger, the straightening of the front hook of the fiber is facilitated, the forward double-rubber-ring jaw extending forwards is arranged in the front draft zone, the speed change point of the front draft zone is intensively moved to the front roller jaw, the shift deviation of the front end of the fiber is reduced, and meanwhile, the draft multiple is very large, the straightening of the rear hook of the fiber is facilitated;
(3) the device of the spinning method adopting the ultra-large drafting has the advantages that the drafting multiple of the middle drafting zone is set to be 1, and at least one gathering element is additionally arranged, so that the fiber strands diverged by the drafting of the rear drafting zone can be effectively gathered, the running stability of the front drafting zone and the rear drafting zone can be improved, and the device is favorable for the large-magnification drafting of the front zone;
(4) according to the device adopting the spinning method with the ultra-large draft, two different fiber speed change point control methods of centralized backward movement of the fiber speed change points and centralized forward movement of the speed change points are respectively adopted in the back draft zone and the front draft zone, so that the phenomenon of superposition deterioration of draft waves caused by a single control method of the fiber speed change points is avoided;
(5) according to the device adopting the spinning method with the ultra-large drafting, the double rubber rings in the back drafting area and the front drafting area are respectively driven and controlled by the jaw of the first middle roller and the jaw of the second middle roller, and the driving and the operation stress of the double rubber rings in the back drafting area and the front drafting area are not mutually controlled, so that the operation stability of the back drafting area and the front drafting area under the ultra-large drafting process condition can be ensured.
Drawings
FIG. 1 is a schematic view of the structure of an apparatus for carrying out the ultra-high draft spinning method of the present invention;
FIG. 2 is a schematic view of the structure of the roll-shaped cluster of the present invention;
FIG. 3 is a schematic view of the construction of the lower pin of the present invention;
FIG. 4 is a schematic structural view of an upper pin holder of the present invention;
FIG. 5 is a schematic structural view of the tensioner of the present invention;
the automatic belt-type belt conveyor comprises a belt conveyor, a belt and a belt, wherein the belt conveyor comprises a belt conveyor, a belt and a belt, wherein 1-a rear roller, 2-a rear belt roller, 3-a first middle belt roller, 4.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
A spinning method with ultra-high drafting comprises the following steps: the twisted fiber strips with twist of 11.6 twist/m and quantification of 5g/5m sequentially pass through a rear drafting zone, a middle drafting zone and a front drafting zone, double-rubber-ring drafting is respectively adopted in the rear drafting zone and the front drafting zone, meanwhile, the middle drafting zone is gathered, the drafting times of the middle drafting zone are controlled to be 1, so that the drafting times of the rear drafting zone and the front drafting zone are respectively 7 times and 61.5 times, and the total drafting time of the rear drafting zone, the middle drafting zone and the front drafting zone is 430.5 times;
the structure schematic diagram of the device for realizing the spinning method with the ultra-large draft is shown in figure 1, wherein the rear draft zone is an area between a rear leather roller 2 and a rear roller 1 which are arranged up and down and a first middle leather roller 3 and a first middle roller 4; the middle drafting zone is an area between a first middle leather roller 3 and a first middle roller 4 which are arranged up and down and a second middle leather roller 10 and a second middle roller 11; the front drafting zone is an area between a second middle leather roller 10 and a second middle roller 11 which are arranged up and down and a front leather roller 16 and a front roller 17;
the linear velocity of the front roller 17 is 35000mm/min, and the linear velocities of the first middle roller 4 and the second middle roller 11 are the same;
the realization mode of double-rubber-ring drafting in the back drafting zone is as follows:
firstly, arranging a rear upper pin frame 5 and a rear lower pin 6 which are vertically arranged and matched with each other in a rear drafting zone, arranging a rear tensioner 18 below the side of the rear lower pin 6, sleeving a rear upper rubber ring 7 on a first middle leather roller 3 and the rear upper pin frame 5, sleeving a rear lower rubber ring 8 on a first middle roller 4, the rear lower pin 6 and the rear tensioner 18, controlling the position of the rear tensioner 18 to enable the rear lower rubber ring 8 to be tensioned and tightly attached to the strand attaching surface of the rear lower pin 6, and controlling the positions of the rear upper pin frame 5 and the rear lower pin 6 to enable the strand attaching surfaces of the rear upper rubber ring 7 and the rear lower rubber ring 8 to be attached to each other;
the binding surfaces of the fiber strips of the rear upper pin frame 5 and the rear lower pin rod 6 are both composed of a plane and an upward convex cambered surface;
a free area is arranged between the jaw of the rear roller 1 and the jaw of the double rubber rings in the rear drafting area, the free area refers to an area without friction force, the distance between the jaw of the double rubber rings in the rear drafting area and the jaw of the rear roller 1 is 8mm, and the length of a friction force boundary in the rear drafting area along the running direction of twisted fiber strips is 85% of the length of the twisted fiber strips in the drafting area;
the front drafting zone adopts a double-rubber-ring drafting implementation mode as follows:
arranging a front upper pin frame 12 and a front lower pin rod 13 which are vertically arranged and matched with each other in a front drafting zone, arranging a front tensioner 19 below the side of the front lower pin rod 13, sleeving a front upper rubber ring 14 on a second middle leather roller 10 and the front upper pin frame 12, arranging a front lower rubber ring sleeve 15 on a second middle roller 11, the front lower pin rod 13 and the front tensioner 19, controlling the position of the front tensioner 19 to enable the front lower rubber ring 15 to be tensioned and tightly attached to a strand attaching surface of the front lower pin rod 13, and controlling the positions of the front upper pin frame 12 and the front lower pin rod 13 to enable the strand attaching surfaces of the front upper rubber ring 14 and the front lower rubber ring 15 to be attached to each other;
the schematic structure of the rear tensioner 18 and the front tensioner 19 is shown in fig. 5;
the shapes of the front upper pin frame 12 and the front lower pin rod 13 are respectively the same as those of the rear upper pin frame 5 and the rear lower pin rod 6; the structure of the front upper pin frame 12 and the rear upper pin frame 5 is schematically shown in fig. 4, and the structure of the front lower pin 13 and the rear lower pin 6 is schematically shown in fig. 3;
a free area is arranged between the front roller 17 jaw and the double-rubber-ring jaw in the front drafting area, the free area is an area without friction force, the distance between the double-rubber-ring jaw and the front roller 17 jaw in the front drafting area is 6mm, and the length of a friction force boundary in the front drafting area along the running direction of twisted fiber strips is 80% of the length of the twisted fiber strips in the drafting area;
the condensing in the middle draft zone is achieved by: a gathering element is arranged between the first middle leather roller 3 and the first middle roller 4 and the second middle leather roller 10 and the second middle roller 14;
the gathering element is a rolling buncher 9;
the buncher 9 is in the shape of a roller, the number of the buncher is 2, as shown in figure 2, the buncher is respectively positioned above and below the running direction of the twisted fiber strips and respectively and correspondingly close to the jaw of the second middle roller 11 and the jaw of the first middle roller 4; the periphery of the roller is provided with a groove in a surrounding manner, the cross section of the groove is trapezoidal, the lower bottom and the upper bottom of the trapezoid respectively correspond to the notch and the groove bottom of the groove, and the lengths of the trapezoid are respectively 6mm and 4 mm;
the yarn obtained finally had a count of 50 inches, a yarn evenness CV value of 16.5%, a number of + 50% slubs of 267 pieces/km and a number of-50% details of 13 pieces/km.
Example 2
A super-draft spinning method, substantially the same as example 1, except that the twist of twisted fiber sliver is 8 twists/m, the basis weight is 30g/5m, the draft multiples of the rear draft zone and the front draft zone are 7 times and 51.6 times, respectively, and the total draft multiple of the rear draft zone, the middle draft zone and the front draft zone is 361.2 times;
the linear velocity of the front roller is 20325mm/min, and the linear velocities of the first middle roller and the second middle roller are the same;
the distance between a double-rubber-ring jaw and a rear roller 1 jaw in the rear drafting zone is 5mm, and the length of a friction force boundary in the rear drafting zone along the running direction of the twisted fiber strips is 88.6 percent of the length of the twisted fiber strips in the drafting zone;
the distance between a double-rubber-ring jaw and a front roller 17 jaw in the front drafting zone is 5mm, and the length of a friction force boundary in the front drafting zone along the running direction of the twisted fiber strips is 88.6 percent of the length of the twisted fiber strips in the drafting zone;
the gathering element is a fixed buncher 9;
the buncher 9 is in a bell mouth shape, the number of the buncher is 1, the buncher is close to a jaw of the second middle roller 11, and the caliber of the bell mouth is 2 mm;
the yarn obtained finally had a count of 35 inches, a yarn evenness CV value of 14.6%, + 50% slubs of 159/km, and-50% minutiae of 8.2/km.
Example 3
A super-draft spinning method, which is substantially the same as example 2, except that the twist of the twisted fiber sliver is 15 twists/m, the basis weight is 15g/5m, the draft multiples of the rear draft zone and the front draft zone are 5 times and 62 times, respectively, and the total draft multiple of the rear draft zone, the middle draft zone and the front draft zone is 310 times;
the linear velocity of the front roller is 36500mm/min, and the linear velocities of the first middle roller and the second middle roller are the same;
the distance between a double-rubber-ring jaw and a rear roller 1 jaw in the rear drafting zone is 10mm, and the length of a friction force boundary in the rear drafting zone along the running direction of the twisted fiber strips is 80% of the length of the twisted fiber strips in the drafting zone;
the distance between a double-rubber-ring jaw and a front roller 17 jaw in the front drafting zone is 10mm, and the length of a friction force boundary in the front drafting zone along the running direction of the twisted fiber strips is 80% of the length of the twisted fiber strips in the drafting zone;
the caliber of the horn-mouth-shaped buncher is 4 mm;
the yarn obtained finally has a count of 60 English, a yarn evenness CV value of 21 percent, a number of +50 percent slubs of 324/km and a number of-50 percent details of 28/km.
Example 4
A super-draft spinning method, substantially the same as example 1, except that the twist of twisted fiber sliver is 20 twists/m, the basis weight is 15g/5m, the draft multiples of the rear draft zone and the front draft zone are 5 times and 62 times, respectively, and the total draft multiple of the rear draft zone, the middle draft zone and the front draft zone is 310 times;
the linear velocity of the front roller is 6759mm/min, and the linear velocities of the first middle roller and the second middle roller are the same;
the distance between a double-rubber-ring jaw and a rear roller 1 jaw in the rear drafting zone is 15mm, and the length of a friction force boundary in the rear drafting zone along the running direction of the twisted fiber strips is 77.2 percent of the length of the twisted fiber strips in the drafting zone;
the distance between a double-rubber-ring jaw and a front roller 17 jaw in the front drafting zone is 15mm, and the length of a friction force boundary in the front drafting zone along the running direction of the twisted fiber strips is 77.2 percent of the length of the twisted fiber strips in the drafting zone;
the gathering element is a fixed buncher 9;
the buncher 9 is in a roller shape, the periphery of the roller is provided with a groove in a surrounding mode, the cross section of the groove is trapezoidal, the lower bottom and the upper bottom of the trapezoid correspond to the notch and the groove bottom of the groove respectively, and the length of the trapezoid is 3mm and 1mm respectively.
The yarn obtained finally has 40 English counts, the yarn evenness CV value is 15.1 percent, the number of +50 percent slubs is 200/km, and the number of-50 percent details is 11/km.
Claims (10)
1. A spinning method of super draft, pass the twisted fiber strip behind draft zone, middle draft zone and preceding draft zone sequentially, adopt the drafting of the double rubber ring in back draft zone and preceding draft zone separately, it is a free zone between the jaw of front roller and the jaw of the double rubber ring in the said preceding draft zone, the said free zone is the area without friction effect, its characteristic is: meanwhile, the medium drafting zone is gathered and the drafting multiple of the medium drafting zone is controlled to be 1 so as to realize super-large drafting;
and a free area is arranged between the back roller jaw and the double-rubber-ring jaw in the back drafting area.
2. The super-draft spinning method according to claim 1, wherein draft ratios of the rear draft zone and the front draft zone are 5 to 7 times and 51.6 to 62 times, respectively, and a total draft ratio of the rear draft zone, the middle draft zone and the front draft zone is 310 to 430.5 times.
3. The spinning method with ultra-high draft of claim 1, wherein the distance between the double-apron jaw and the back-roller jaw in the back draft zone is 5-15 mm, and the distance between the double-apron jaw and the front-roller jaw in the front draft zone is 5-15 mm.
4. The super-drafting spinning method as claimed in claim 1, wherein the length of the friction interface in the back draft zone or the front draft zone along the running direction of the twisted fiber strip is 77.2-88.6% of the length of the twisted fiber strip in the draft zone.
5. The extra-high draft spinning process according to claim 1, wherein the twist of the twisted fiber sliver is 5 to 20 twists/m and the basis weight is 15 to 30g/5m before the drafting.
6. The super drafting spinning method according to claim 1, wherein the back draft zone is an area between a pair of back leather rollers and back rollers and a pair of first middle leather rollers and first middle rollers;
the middle drafting zone is an area between a pair of first middle leather rollers and first middle rollers and a pair of second middle leather rollers and second middle rollers;
the front drafting zone is an area between a pair of second middle leather rollers and second middle rollers and a pair of front leather rollers and front rollers;
each pair of rollers and leather rollers are arranged up and down.
7. The ultra-high draft spinning method according to claim 6, wherein the double-apron draft in the back draft zone is realized by:
arranging a rear upper pin frame and a rear lower pin rod which are vertically arranged and matched with each other in a rear drafting zone, arranging a rear tensioner below the side of the rear lower pin rod, sleeving the rear upper rubber ring on a first middle leather roller and the rear upper pin frame, sleeving the rear lower rubber ring on a first middle roller, the rear lower pin rod and the rear tensioner, controlling the position of the rear tensioner to enable the rear lower rubber ring to be tensioned and tightly attached to a strand attaching surface of the rear lower pin rod, and controlling the positions of the rear upper pin frame and the rear lower pin rod to enable the strand attaching surfaces of the rear upper rubber ring and the rear lower rubber ring to be attached to each other;
the front drafting zone adopts a double-rubber-ring drafting implementation mode as follows:
the method comprises the steps of arranging a front upper pin frame and a front lower pin rod which are vertically arranged and matched with each other in a front drafting zone, arranging a front tensioner below the side of the front lower pin rod, sleeving a front upper rubber ring on a second middle leather roller and the front upper pin frame, sleeving the front lower rubber ring on a second middle roller, a front lower pin rod and the front tensioner, controlling the position of the front tensioner to enable the front lower rubber ring to be tensioned and tightly attached to a strand attaching surface of the front lower pin rod, and controlling the positions of the front upper pin frame and the front lower pin rod to enable the strand attaching surfaces of the front upper rubber ring and the front lower rubber ring to be attached to each other.
8. The extra-high draft spinning method according to claim 7, wherein the rear upper pin holder and the rear lower pin are respectively shaped as the front upper pin holder and the front lower pin; the binding surfaces of the fiber strips of the front upper pin frame and the front lower pin rod are both composed of a plane and an upward convex cambered surface.
9. A super drafting spinning process according to claim 8, wherein the condensing in the middle draft zone is carried out by: a gathering element is arranged between the first middle leather roller and the first middle roller and between the second middle leather roller and the second middle roller;
the gathering element is a fixed or rolling buncher;
the buncher is in a roller shape or a horn mouth shape, a groove is arranged on the circumferential surface of the roller in a surrounding mode, the cross section of the groove is in a trapezoid shape, the lower bottom and the upper bottom of the trapezoid respectively correspond to the notch and the groove bottom of the groove, the length of the trapezoid is 3-6 mm and 1-4 mm respectively, and the caliber of the horn mouth is 2-4 mm;
the number of the roller-shaped bunchers is 2, the roller-shaped bunchers are respectively positioned above and below the running direction of the twisted fiber strips and respectively and correspondingly close to the second middle roller jaw and the first middle roller jaw;
the number of the horn-shaped bunchers is 1, and the horn-shaped bunchers are close to the second middle roller jaw.
10. The ultra-high draft spinning method according to claim 9, wherein the linear speed of the front roller is 6759-36500 mm/min, and the linear speed of the first middle roller is the same as that of the second middle roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390391.7A CN109610053B (en) | 2018-11-21 | 2018-11-21 | Spinning method with super-high drafting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390391.7A CN109610053B (en) | 2018-11-21 | 2018-11-21 | Spinning method with super-high drafting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109610053A CN109610053A (en) | 2019-04-12 |
| CN109610053B true CN109610053B (en) | 2020-07-28 |
Family
ID=66004834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811390391.7A Active CN109610053B (en) | 2018-11-21 | 2018-11-21 | Spinning method with super-high drafting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109610053B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB745615A (en) * | 1953-12-21 | 1956-02-29 | Tmm Research Ltd | Improvements in the drafting apparatus of textile spinning machines |
| US3341901A (en) * | 1965-08-16 | 1967-09-19 | Kitamura Shinzo | Long apron type draft apparatus used in textile machines |
| US4680833A (en) * | 1985-05-07 | 1987-07-21 | NPK "Textiling Maschinostroene" | Drawing apparatus |
| JP3085110B2 (en) * | 1994-11-14 | 2000-09-04 | 豊和工業株式会社 | Spinning machine draft device |
| CN2623708Y (en) * | 2003-05-28 | 2004-07-07 | 山东同大纺织机械有限公司 | Four-roller three-apron drafting mechanism for spinning machine |
| CN2623707Y (en) * | 2003-05-28 | 2004-07-07 | 山东同大纺织机械有限公司 | Four-roller four-apron drafting mechanism for spinning machine |
| CN2685363Y (en) * | 2004-03-05 | 2005-03-16 | 山东同大纺织机械有限公司 | Four-apron drafting system for spinning frame |
| CN201220987Y (en) * | 2008-07-09 | 2009-04-15 | 东台纺织机械有限责任公司 | High drafting device for ring spinning frame |
| CN107237014A (en) * | 2017-06-28 | 2017-10-10 | 东华大学 | Centralization type spun yarn Super-high-draft device and spinning process |
-
2018
- 2018-11-21 CN CN201811390391.7A patent/CN109610053B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB745615A (en) * | 1953-12-21 | 1956-02-29 | Tmm Research Ltd | Improvements in the drafting apparatus of textile spinning machines |
| US3341901A (en) * | 1965-08-16 | 1967-09-19 | Kitamura Shinzo | Long apron type draft apparatus used in textile machines |
| US4680833A (en) * | 1985-05-07 | 1987-07-21 | NPK "Textiling Maschinostroene" | Drawing apparatus |
| JP3085110B2 (en) * | 1994-11-14 | 2000-09-04 | 豊和工業株式会社 | Spinning machine draft device |
| CN2623708Y (en) * | 2003-05-28 | 2004-07-07 | 山东同大纺织机械有限公司 | Four-roller three-apron drafting mechanism for spinning machine |
| CN2623707Y (en) * | 2003-05-28 | 2004-07-07 | 山东同大纺织机械有限公司 | Four-roller four-apron drafting mechanism for spinning machine |
| CN2685363Y (en) * | 2004-03-05 | 2005-03-16 | 山东同大纺织机械有限公司 | Four-apron drafting system for spinning frame |
| CN201220987Y (en) * | 2008-07-09 | 2009-04-15 | 东台纺织机械有限责任公司 | High drafting device for ring spinning frame |
| CN107237014A (en) * | 2017-06-28 | 2017-10-10 | 东华大学 | Centralization type spun yarn Super-high-draft device and spinning process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109610053A (en) | 2019-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5970615B2 (en) | Draft device in spinning machine | |
| CN103757762A (en) | Spinning method for conducting fiber arrangement on fiber bands | |
| CN204138845U (en) | A kind of spinning apparatus of novel colour-spun yarns | |
| WO2022262567A1 (en) | Lower spinning assembly of fiber strand conveying mechanism of ring spinning frame | |
| CN109610052B (en) | Ultra-large draft spinning method and device adopting same | |
| CN109610053B (en) | Spinning method with super-high drafting | |
| CN200943117Y (en) | Aggregating spinning | |
| CN1962978A (en) | Double air-current tank-accumulated strand collecting device | |
| CN108977946B (en) | Uniform drafting method for large drafting of rear area of spinning frame | |
| CN1948574B (en) | High power drawing device of ring throstle | |
| CN100355965C (en) | Collecting tube for fiber strip collector of spinning machine | |
| CN1113991C (en) | Fibre strand integrated composite device for ring spindle spinning | |
| CN1453405A (en) | Apparatus for producing mock yarn | |
| CN1414150A (en) | Fibre ribbon collecting device of spinning machine | |
| CN2455735Y (en) | Device for combing thread fiber | |
| CN2493627Y (en) | Fibre condensing guide for double-apron fibre-strand of herringbone gear | |
| CN209989521U (en) | Tension adjustable drawing frame | |
| CN101851818A (en) | Airflow-type bottom pin device of roving frame | |
| CN215887364U (en) | Forced dehairing device for ring spinning yarn | |
| CN2571785Y (en) | Spining device for reducing hair collection | |
| CN1704512A (en) | Drawing device for spinning machine | |
| CN216864428U (en) | Production device for compact siro spinning | |
| CN204661901U (en) | For two condensers spinning-drafting devices of SEILE textile | |
| CN2620702Y (en) | Polymerization device for spinning machine | |
| CN102505213A (en) | Device for gathering multi-bundle fibers of ring spinning frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |