CN114540999B - Equal-spacing double-channel ring spinning device with single drafting zone - Google Patents
Equal-spacing double-channel ring spinning device with single drafting zone Download PDFInfo
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- CN114540999B CN114540999B CN202210155862.6A CN202210155862A CN114540999B CN 114540999 B CN114540999 B CN 114540999B CN 202210155862 A CN202210155862 A CN 202210155862A CN 114540999 B CN114540999 B CN 114540999B
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- 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
- D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
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- 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
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- 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
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Abstract
The invention belongs to the technical field of ring spinning, and relates to an equal-space-distance double-channel ring spinning device with a single drafting zone. According to the invention, two channels of back rollers, two channels of back upper sizing rollers, two channels of upper pins and two channels of lower pins are designed, and the double-yarn guide pressure bars and the improved compact spinning device are configured, so that two independent single drafting zones with equal spacing are obtained, and the independent drafting and the online variable drafting of the double rovings are realized. The positions of a middle roller and a rear roller of a traditional compact spinning frame can be used as the two-channel rear roller and looper ring driving shaft, the roller seat of a drafting device of the original spinning frame is not required to be replaced, the original middle roller can be replaced by a two-channel rear roller, the original rear roller can be replaced by the looper ring driving shaft, and a two-channel lower pin, a two-channel rear upper rubber roller, a two-channel lower pin, an upper leather collar and a lower leather collar and the like are replaced. The change of the output quantity of the two rovings is realized by adjusting the drafting times of the two drafting channels on line, and the two-component color-changing yarn is spun. Flexible and changeable, and strong applicability.
Description
Technical Field
The invention belongs to the technical field of ring spinning, and relates to an equal-space-distance double-channel ring spinning device with a single drafting zone.
Background
The method is that two pieces of roving with the same specification are fed into a rear roller of the ring spinning at a larger interval, pass through the same drafting zone and are simultaneously output at a jaw of a front roller, and the two pieces of roving are converged and twisted into yarn.
On the basis of multiple raw material feeds, it is desirable to achieve independent drafting of each raw material. Japanese patent laid-open No. 2000-110035 (application No. 2000-4/18) discloses a coaxial 3-degree-of-freedom back roller structure, the middle shaft sleeve is driven by a roller shaft, the shaft sleeves on both sides are respectively driven by connected gears, and the structure is applied to a roving frame drafting mechanism, so that the back region independent drafting of three raw materials is realized; the invention discloses a method and a device for forming equal linear density ring spinning segment color yarns, which are disclosed by Chinese invention patent (ZL 201010616326.9). The drafting tooth surface part of a rear roller of a spinning machine is designed into two parallel independent parts, one part is fixed on a rear roller shaft, and the other part is movably sleeved on the rear roller shaft and is independently driven by a transmission shaft. Two pieces of rough yarn are respectively fed into two rows of juxtaposed rear rollers, so that two channels in the rear area of the spinning frame are independently drafted. However, the drafting mechanism of the spinning frame is in a double-drafting-zone form, the back zone is simple roller drafting, the drafting multiple of the back zone of the spinning frame is smaller, generally 1.1-1.3, for effectively controlling the fiber in the roving in the drafting process, on the basis of sharing the main drafting zone, the adjusting capacity range of the two-channel independent drafting of the back zone to the total drafting multiple of two rovings is relatively limited, and the independent drafting of the two drafting channels cannot be completely realized.
Chinese patent ZL201580016832.5 discloses a drafting device of a spinning machine and a control method thereof, the device divides an upper leather collar and a lower leather collar of the drafting device into a left part and a right part, wherein the upper leather collar and the lower leather collar on one side span an upper rubber roller and a middle roller, a rear roller and a rear rubber roller are adopted for driving to form a left drafting channel and a right drafting channel, one drafting channel is formed by the middle roller and the front roller, and the other drafting channel is formed by the rear roller and the front roller, so that the independent drafting of two rovings is realized. However, because one of the drafting channels is formed by the back roller and the front roller, and is influenced by the middle roller, the distance between the back roller and the front roller cannot be effectively reduced, the distance between the front holding point and the back holding point of the drafting channel is far larger than that of the other drafting channel, for short fiber spinning, the distance between the front holding point and the back holding point of the drafting zone must be matched with the fiber length, the fiber speed changing point is consistent and stable in the drafting process, and uniform drafting is obtained, so that the independent drafting of the two drafting channels is realized by the two drafting channels with unequal distances in the patent, but the ideal drafting effect cannot be realized by one drafting channel with large distance.
Disclosure of Invention
The invention aims to solve the technical problem of providing an equal-space-distance double-channel ring spinning device with a single drafting zone, and particularly relates to a spinning method for spinning color-changed yarns by independently drafting two rough yarns in ring spinning. The invention forms two ring spinning devices with single drafting zone equal-distance independent drafting channels by designing a back roller and a back upper sizing roller with two coaxial independent rotational degrees of freedom, a double-channel upper pin with a back pressure bar, a double-channel lower pin, a compact spinning airflow guide sheet and a double-channel compact spinning negative pressure air suction groove. The ring spinning frame can spin two-component color-changing yarns, and the design of a full spindle number device (a single roller with 6 spindles or 8 spindles) is realized.
The technical scheme of the invention is as follows:
a single-drafting-zone equal-spacing double-channel ring spinning device comprises a double-horn mouth, a double-channel rear roller, a double-channel rear gluing roller, a front gluing roller, a compact spinning negative pressure pipe, a compact spinning output roller, a compact spinning output gluing roller, a yarn guide hook, a ring and a steel wire ring; the double-bell mouth is fixed above the bell mouth fixing cross rod, the front yarn guide pressure bar and the rear yarn guide pressure bar are fixed through one end of the double-channel upper pin and are positioned behind the double-bell mouth, a drafting channel formed by the double-channel rear roller and the double-channel rear upper sizing roller is positioned at the rear ends of the front yarn guide pressure bar and the rear yarn guide pressure bar, and a drafting channel formed by the front roller and the front upper sizing roller is positioned behind the double-channel rear roller and the double-channel rear upper sizing roller; the negative pressure tube of the condensing spinning is positioned at the rear of the front roller and condenses and converges the two bundles of fiber strands; the compact spinning output roller and the compact spinning output rubber roller are positioned behind the front roller and the front upper rubber roller, so that the yarns are held and output, and then twisted into yarns, and the yarns are wound on the yarn tube through the yarn guide hook and the steel wire ring.
The roving A and the roving B are respectively fed into holes of double bell mouths fixed on a cross bar, then pass through the upper side of a rear yarn guide pressure rod and the lower side of a front yarn guide pressure rod, are respectively fed into two independent drafting channels of a rear roller, are drafted in a drafting zone and output at a jaw of a front roller, enter a compact spinning negative pressure airflow zone, and are transversely contracted and converged into a single fiber bundle under the action of airflow, and then are held by a compact spinning output roller and a compact spinning output rubber roller for output.
The front yarn guide pressure bar and the rear yarn guide pressure bar are used for pre-tensioning the roving fed into the drafting zone. The traditional drafting device of the ring spinning frame is divided into two drafting zones, the front drafting zone is a apron drafting zone, the rear drafting zone is a simple roller drafting zone, in the spinning practice, the front drafting zone bears the main drafting multiple of the roving, the drafting multiple borne by the rear drafting zone is smaller, although the drafting multiple borne by the rear drafting zone is smaller, the front drafting zone has a certain pre-drafting arrangement effect on the roving, the roving has twist, the spinning principle of the roving leads the uniformity of the twist distribution on the roving to be poorer, the rear zone pre-drafting can tension the roving, the twist on the roving is redistributed under the action of twist torque, the improvement of the twist distribution of the roving is facilitated, and the drafting quality of the roving is reduced by directly canceling the rear drafting zone; in addition, the apron drafting zone is used as a main drafting zone, the form and the compactness of the roving fed into the drafting zone also influence the drafting quality, the roving subjected to micro-drafting in the rear zone is tensioned and fed into the apron drafting zone in a tighter form so as to maintain the cohesive force among fibers, and single fibers can be subjected to the effective friction cohesion effect of slow fibers when being changed from slow fibers to fast fibers in the drafting process, so that the effective friction cohesion effect has an obvious effect on stabilizing the fiber speed change point. Combining the theory, the invention adds two yarn guide pressure rods behind the two channel drafting zones while canceling the rear drafting zone, so that the roving between the bell mouth and the rear roller holding point bypasses the front and the rear yarn guide pressure rods in a curve form, the roving can generate radial acting force to the front and the rear yarn guide pressure rods under the tension action of the roving when the rear roller holds and advances, and the radial acting force can increase the friction force between the roving and the yarn guide pressure rods, thereby the roving between the rear roller holding point and the yarn guide pressure rods can obtain larger tension to the roving, the roving redistribution and the roving structure in the feeding drafting zone are compact, and the roving drafting quality of the single channel ring spinning device with equal spacing distance is ensured.
The double-channel rear roller comprises a rear roller shaft, a movable sleeve toothed ring, a bearing, a fixed toothed ring and a metal key, wherein the rear roller shaft is fixed with the fixed toothed ring which is limited in the radial direction through the metal key, the movable sleeve toothed ring is movably sleeved on the rear roller shaft through the bearing, one side of the movable sleeve toothed ring is provided with a transmission gear, the working surface of the fixed toothed ring and the working surface of the movable sleeve toothed ring have the same diameter, a row of the fixed toothed ring and a row of the movable sleeve toothed ring form a working unit, the fixed toothed ring is directly driven by the rear roller shaft, the movable sleeve toothed ring is connected with a synchronous belt through the transmission gear, and then the synchronous belt is transmitted through an independent transmission shaft.
The corresponding binary channels back sizing roller of roller cooperation behind the binary channels, the sizing roller is including two rubber roll cover A and the rubber roll cover B that have independent rotatory degree of freedom behind the binary channels, two rubber roll covers pass through the bearing to be fixed on the rubber roll axle, all adopt interference fit, rubber roll cover A is the same with rubber roll cover B's external diameter, two rubber roll covers contact with the fixed ring gear and the loop ring gear of roller behind the binary channels respectively, through roller drive behind the binary channels, realize passive rotation, two surface linear velocities of two rubber roll covers and the fixed ring gear of roller behind the binary channels and the surface linear velocity of loop ring gear match.
Roller and binary channels back rubberizing roller form two and have independent rotation degree of freedom grip keep silent, two grip keep silent and form a draft zone with preceding roller respectively, roller and binary channels down sell wear to overlap two isometric down aprons simultaneously after the binary channels, down the apron be apron A and apron B down respectively, two isometric apron of cover are worn simultaneously to rubberizing roller and binary channels on the roller after the binary channels, the apron is apron A and apron B respectively, formed two equidistant apron draft zones that have independent draft multiple.
The double-channel upper pin is of a center line symmetrical structure, forms a left working unit and a right working unit, and takes a left working unit as an example:
an upper pin elastic nipper B and an upper pin elastic nipper A are sequentially fixed on the left side of the upper pin main body support, a leather collar left limit and a leather collar right limit are respectively fixed above the upper pin elastic nipper A and the upper pin elastic nipper B, and a round convex spacing block fixing buckle is arranged in the middle of the front portion of the upper pin main body support.
The double-channel lower pin is of a center line symmetrical structure, and a left working unit is taken as an example: the pin joint comprises a lower pin channel A and a lower pin channel B, wherein a limit spacer is arranged between the lower pin channel A and the lower pin channel B;
the two-channel upper pin and the two-channel lower pin respectively limit the upper and lower groups of left and right juxtaposed aprons transversely, so that the left and right juxtaposed aprons can keep stable transverse positions in the operation process, and the stability of roving drafting is ensured.
The double-channel negative pressure gathering groove on the gathering spinning negative pressure pipe is Y-shaped, two bundles of fibers output by the front roller jaw enter the front end of the Y-shaped negative pressure gathering groove respectively, the fiber bundles run along the gathering groove under the action of air flow, are gathered into a single fiber bundle in the bottom end area of the Y-shaped negative pressure gathering groove, are held and output by the gathering spinning output roller and the output rubber roll, and are twisted into yarns.
The negative pressure gathering slot is provided with a gathering spinning negative pressure airflow guide sheet above the double-channel negative pressure gathering slot, the top end of the gathering spinning negative pressure airflow guide sheet is closed, the left side and the right side of the gathering spinning negative pressure airflow guide sheet are provided with open channels with the height of 1-2 mm and the width of 6-8 mm, the front end and the rear end are fiber strand passing positions, the transverse width of a fiber strand inlet close to a front roller is larger, the transverse width of a fiber strand outlet close to a gathering spinning output roller is smaller, and the gathering spinning negative pressure airflow guide sheet is used for acquiring larger transverse airflow flow velocity and pressure intensity so as to meet the transverse gathering of two fiber strands with larger distance and realize the smooth spinning process.
The invention has the beneficial effects that:
the invention designs a double-channel rear roller, a double-channel rear upper sizing roller, a double-channel upper pin and a double-channel lower pin, configures a double-yarn guide pressure rod and a modified compact spinning device, and cooperates with an electronic control system to obtain two independent single drafting zones with equal spacing distance, thereby realizing the independent drafting and the online variable drafting of double roving yarns. The method for spinning the two-component color-changing yarn by the ring spinning frame is optimized, and the design of a full-spindle-number spinning device is realized. Under the condition of transforming the original middle and rear roller driving into electronic servo control, the used two-channel rear roller and loop toothed ring driving shaft can use the positions of the middle roller and the rear roller of the traditional compact spinning frame, the roller seat of the drafting device of the original spinning frame is not required to be replaced, the original middle roller can be replaced by the two-channel rear roller, the original rear roller can be replaced by the loop toothed ring driving shaft, and the two-channel lower pin, the two-channel rear upper rubber roller, the two-channel lower pin, the upper and lower leather rings and the like can be replaced. The change of the output quantity of the two rough yarns is realized by adjusting the drafting multiples of the two drafting channels on line, and the two-component color-changing yarn is spun. Flexible and changeable, and strong applicability.
Drawings
FIG. 1 is a schematic view of a single draft zone double channel ring spinning apparatus;
FIG. 2 is a schematic cross-sectional view of the drawing frame;
FIG. 3 is a top view of the upper half of the drafting mechanism;
FIG. 4 is a top view of the lower half of the drafting mechanism;
FIG. 5 is a two-channel back roller;
FIG. 6 is a double channel back sizing roller;
FIG. 7 is a dual channel up pin;
FIG. 8 is a dual channel lower pin;
FIG. 9 is an airflow director tab;
FIG. 10 is a two-color gradient yarn weft knitted fabric;
fig. 11 is a two-color skip yarn weft knitted fabric.
In the figure: 1, roving A;2, roving yarn B;3, a bell mouth A;4, a bell mouth B;5, fixing a cross rod through a bell mouth; 6, a rear yarn guide pressure bar; 7 leading yarn pressure bar; 8, a double-channel back roller; 9 double-channel rear sizing roller; 10, double-channel upper pinning; 11, double-channel lower pin; 12 a front roller; 13, gluing a rubber roller in front; 14, a compact spinning negative pressure pipe; 15 negative pressure airflow guide piece for compact spinning; 16 compact spinning output rollers; 17, a compact spinning output rubber roller; 18 spun yarns; 19 a yarn guide hook; 20 steel wire rings; 21 a ring; 22 bobbin; 23, a lower leather ring A;24, a lower leather ring B;25, epithelial circle a;26, epithelial ring B;27 synchronous belts; 28 a drive shaft; 29 a timing pulley; 30 grid circles; 31 a double-channel negative pressure gathering tank; a rear roller shaft of 81 degrees; 82 looping toothed rings; 83 fixing the toothed ring; 84 a loose toothed ring drive gear; 85 bearing; 86 metallic bond; 87 a threaded guide post; 88 threaded guide holes; 89 roller bearings; 91 rubber roller cover A;92, a rubber roller sleeve B;93 a rubber roll shaft; 94 rubber roller bearings; 101, an elastic nipper A is pinned; 102, pinning an elastic nipper B;103, fixing and buckling a spacing block; 104 a pin pressure spring; 105, left limiting of a leather ring; 106 leather collar right limit; 107 upper pin body support; 111 lower pin passage A;112 lower pin passage B;113 a spacing spacer; 151 inlet anchor of fiber strand; 152 outlet feet of the fiber strand.
Detailed Description
The present invention will be further described with reference to the following 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 single drafting zone equal-spacing double-channel ring spinning device comprises a double-bell mouth, a compact spinning output roller 16, a compact spinning output rubber roller 17, a yarn guide hook 19, a ring 21 and a traveler 20; the double-bell mouth is fixed above the bell mouth fixing cross rod 5, the front yarn guide pressure bar 7 and the rear yarn guide pressure bar 6 are fixed through one end of the double-channel upper pin 10 and are positioned behind the double-bell mouth, a drafting channel formed by the double-channel rear roller 8 and the double-channel rear upper sizing roller 9 is positioned at the rear ends of the front yarn guide pressure bar 7 and the rear yarn guide pressure bar 6, and a drafting channel formed by the front roller 12 and the front upper sizing roller 13 is positioned behind the double-channel rear roller 8 and the double-channel rear upper sizing roller 9; the compact spinning output roller 16 and the compact spinning output rubber roller 17 are positioned behind the front roller 12 and the front sizing roller 13, so that the yarn is held and output, and then twisted into yarn, and wound on a yarn tube 22 through a yarn guide hook 19 and a steel wire ring 20.
The roving A1 and the roving B are respectively fed into holes of double bell mouths fixed on a cross bar, then pass through the upper side of a rear yarn guide pressure rod 6 and the lower side of a front yarn guide pressure rod 7, and are respectively fed into two independent drafting channels of a rear roller, are drafted in a drafting zone and output at a jaw of a front roller 12, enter a compact spinning negative pressure airflow zone, and two fiber bundles with larger space are transversely contracted and converged into a single fiber bundle under the action of airflow and then are held by a compact spinning output roller 16 and a compact spinning output rubber roller 17 for output.
The purpose of the front yarn guide pressure bar 7 and the rear yarn guide pressure bar 6 is to pre-tension the roving fed into the drafting zone. The traditional drafting device of the ring spinning frame is divided into two drafting zones, the front drafting zone is a main drafting zone of a apron drafting zone, the rear drafting zone is a simple roller drafting zone, in the spinning practice, the front drafting zone bears the main drafting multiple of the roving, the drafting multiple borne by the rear drafting zone is smaller, usually 1.1-1.3 times, although the drafting multiple borne by the rear drafting zone is smaller, the rear drafting zone has a certain pre-drafting arrangement effect on the roving, the roving has twist, the spinning principle of the roving leads the twist distribution uniformity on the roving to be poorer, the rear zone pre-drafting can tension the roving, the twist on the roving is redistributed under the action of twist torque, the improvement of the twist distribution of the roving is facilitated, and the drafting quality of the roving is reduced by directly canceling the rear drafting zone; in addition, the apron drafting zone is used as a main drafting zone, the form and the compactness of the roving fed into the drafting zone also influence the drafting quality, the roving subjected to micro drafting in the rear zone is tensioned and fed into the apron drafting zone in a tighter form so as to keep the resultant force between fibers, and the single fiber can be subjected to the effective friction resultant action of the slow fiber when the slow fiber is changed into the fast fiber in the drafting process, so that the fiber drafting zone has an obvious effect on stabilizing the speed change point of the fiber. Combining the theory, the invention adds two yarn guide pressure rods behind the two channel drafting zones while canceling the rear drafting zone, so that the roving between the bell mouth and the rear roller holding point bypasses the front and the rear yarn guide pressure rods in a curve form, the roving can generate radial acting force to the front and the rear yarn guide pressure rods under the tension action of the roving when the rear roller holds and advances, and the radial acting force can increase the friction force between the roving and the yarn guide pressure rods, thereby the roving between the rear roller holding point and the yarn guide pressure rods can obtain larger tension to the roving, the roving redistribution and the roving structure in the feeding drafting zone are compact, and the roving drafting quality of the single channel ring spinning device with equal spacing distance is ensured.
The double-channel back roller 8 is shown in fig. 5, the double-channel back roller 8 comprises a back roller shaft 81, a movable sleeve toothed ring 82 and a metal key 86, the back roller shaft 81 fixes a fixed toothed ring 83 for radial limiting through the metal key 86, the movable sleeve toothed ring 82 is movably sleeved on the back roller shaft 81 through a bearing 86, one side of the movable sleeve toothed ring 82 is provided with a transmission gear, the working surface of the fixed toothed ring 83 is the same as the working surface of the movable sleeve toothed ring 82 in diameter, a row of the fixed toothed ring 83 and a row of the movable sleeve toothed ring 82 form a working unit, the fixed toothed ring 83 is directly driven by the back roller shaft 81, the movable sleeve toothed ring 82 is connected with a synchronous belt 27 through the transmission gear, and then the synchronous belt 27 is driven by an independent transmission shaft, so that the rotating speed of the working surfaces of two adjacent toothed rings in the working unit is independently controlled, the left and right positions of the movable sleeve toothed rings 82 on the single-section double-channel back roller 8 are consistent with the left and right positions of the fixed toothed ring 83, so as to ensure the consistency of the left and right channels, two sides of the single-section back roller 8 are respectively provided with a screw guide hole 87 and a screw guide structure, which is convenient for axial connection of the roller through the multi-section roller bearing seat.
As shown in fig. 7, the dual-channel upper pin 10 is a symmetric structure with a center line, and forms a left working unit and a right working unit, taking a left working unit as an example:
an upper pin elastic nipper B102 and an upper pin elastic nipper A101 are sequentially fixed on the left side of an upper pin main body support 107, a leather collar left limit 105 and a leather collar right limit 106 are respectively fixed above the upper pin elastic nipper A101 and the upper pin elastic nipper B102, and a spacer block fixing buckle 103 which is arranged in a circular protruding mode is arranged in the middle of the front portion of the upper pin main body support 107.
The double-channel lower pin 11 is shown in fig. 8, the double-channel lower pin 11 is a center line symmetric structure, and a left-side working unit is taken as an example: the pin joint comprises a lower pin channel A111 and a lower pin channel B112, wherein a limit spacer 113 is arranged between the lower pin channel A111 and the lower pin channel B112;
the double-channel upper pin 10 and the double-channel lower pin 11 are used for respectively limiting the upper and lower groups of leather rings which are juxtaposed left and right transversely, so that the leather rings which are juxtaposed left and right can keep stable transverse positions in the operation process, and the stability of roving drafting is ensured.
The double-channel negative pressure gathering groove 31 on the gathering spinning negative pressure pipe 14 is Y-shaped, two bundles of fibers output from a jaw of the front roller 12 respectively enter the front end of the Y-shaped negative pressure gathering groove, the fiber bundles run along the gathering groove under the action of air flow, are gathered into a single fiber bundle in the bottom end area of the Y-shaped negative pressure gathering groove, are held and output by the gathering spinning output roller 16 and the output rubber roll, and are twisted into yarns.
The upper part of the double-channel negative pressure gathering groove 31 is provided with a gathering spinning negative pressure airflow guide sheet 15, the top end is closed, the left side and the right side are provided with open channels with the height of 1-2 mm and the width of 6-8 mm, the front end and the rear end are fiber strand passing positions, the transverse width of a fiber strand inlet close to the front roller 12 is larger, the transverse width of a fiber strand outlet close to the gathering spinning output roller 16 is smaller, and the gathering spinning negative pressure airflow guide sheet 15 is used for obtaining larger transverse airflow flow velocity and pressure intensity so as to meet the transverse gathering of two fiber strands with larger distance and realize the smooth spinning process.
Example 2:
TABLE 1 two-color gradient yarn spinning process
The densities of the white roving and the black roving are both 400tex, the white roving and the black roving are fed according to the spinning process sequence in the table 1 to spin 19.4tex two-color gradient yarn, and the tex twist coefficient alpha is made tex =360, spinning spindle speed 8000rpm, front roller diameter 27mm, double channel back roller diameter 27mm, front and back roller gauge 20mm.
The yarn is knitted into weft knitted fabric, the weft knitted fabric is knitted by a 14G computer flat knitting machine, the fabric is 1+1 rib, the needle number is 262 needles, and the average coil length is 0.56mm. A two-color gradient yarn weft knitted fabric is shown in fig. 10.
Example 3:
the invention aims to solve the technical problem of providing an equal-space-distance double-channel ring spinning device with a single drafting zone, and particularly relates to a spinning method for spinning color-changed yarns by independently drafting two rough yarns in ring spinning. The invention designs two coaxial independent rotation freedom rear rollers and rear upper sizing rollers, a double-channel upper pin with a rear pressure bar, a double-channel lower pin, a compact spinning airflow guide sheet and a double-channel compact spinning negative pressure air suction groove to form two ring spinning devices with single drafting zone equal-space independent drafting channels. The device realizes the spinning of the ring spinning frame into two-component color-changing yarns and the design of a full spindle number device, and can be conveniently refitted on a common ring compact spinning frame with low cost.
TABLE 2 two-color jump yarn spinning process
The densities of the white roving and the black roving are both 400tex, the white roving and the black roving are alternately fed periodically according to the spinning process in the table 2 to spin 19.4tex two-color jump yarn, and the tex twist coefficient alpha is made tex =360, spinThe spindle speed is 8000rpm, the diameter of the front roller is 27mm, the diameter of the double-channel back roller is 27mm, and the gauge of the front roller and the back roller is 20mm.
The yarn is knitted into weft knitted fabric, the weft knitted fabric is knitted by a 14G computer flat knitting machine, the fabric is 1+1 rib, the needle number is 262 needles, and the average coil length is 0.56mm. A two-color skip-yarn weft knitted fabric is shown in fig. 11.
Claims (4)
1. A single-drafting-zone equal-spacing double-channel ring spinning device comprises a double-horn mouth, a double-channel rear roller (8), a double-channel rear sizing roller (9), a front roller (12), a front sizing roller (13), a compact spinning negative pressure pipe (14), a compact spinning output roller (16), a compact spinning output rubber roller (17), a yarn guide hook (19), a steel collar (21) and a steel wire ring (20); the double-horn mouth yarn guide device is characterized in that the double horn mouth is fixed above a horn mouth fixing cross rod (5), a front yarn guide pressure bar (7) and a rear yarn guide pressure bar (6) are fixed through one end of a double-channel upper pin (10) and are positioned behind the double horn mouth, a drafting channel is formed by a double-channel rear roller (8) and a double-channel rear gluing roller (9) and is positioned at the rear ends of the front yarn guide pressure bar (7) and the rear yarn guide pressure bar (6), and a drafting channel is formed by a front roller (12) and a front gluing roller (13) and is positioned behind the double-channel rear roller (8) and the double-channel rear gluing roller (9); the negative pressure tube (14) of the integrated spinning is positioned at the rear of the front roller (12) and integrates the two bundles of fiber strands; the compact spinning output roller (16) and the compact spinning output rubber roller (17) are positioned at the rear part of the negative pressure pipe (14) to realize the holding and output of the yarn, and then the yarn is twisted into yarn which is wound on a yarn tube (22) through a yarn guide hook (19) and a steel wire ring (20);
the roving A (1) and the roving B (2) are respectively fed into holes of double bell mouths fixed on a cross bar, then pass through the upper side of a rear yarn guide pressure rod (6) and the lower side of a front yarn guide pressure rod (7), are respectively fed into two independent drafting channels of a rear roller, are drafted through a drafting zone, are output at a jaw of a front roller (12), enter a compact spinning negative pressure airflow zone, and are transversely contracted and converged into a single fiber bundle under the action of airflow, and then are held by a compact spinning output roller (16) and a compact spinning output rubber roller (17) to be output;
the double-channel rear roller (8) comprises a rear roller shaft (81), a movable gear ring (82), a bearing (85), a fixed gear ring (83) and a metal key (86), the rear roller shaft (81) is fixed with the fixed gear ring (83) which is radially limited through the metal key (86), the movable gear ring (82) is movably sleeved on the rear roller shaft (81) through the bearing (85), a transmission gear (84) is arranged on one side of the movable gear ring (82), the working face of the fixed gear ring (83) is the same as the working face of the movable gear ring (82), one row of fixed gear rings (83) and one row of movable gear rings (82) form a working unit, the fixed gear ring (83) is directly driven by the rear roller shaft (81), the movable gear ring (82) is connected with a synchronous belt (27) through the transmission gear (84), and the synchronous belt (27) is driven by an independent transmission shaft, thus realizing the independent control of the rotating speed of the working surfaces of two adjacent toothed rings in one working unit, the left and right positions of a plurality of loop toothed rings (82) on a single-section double-channel back roller (8) and a fixed toothed ring (83) are consistent, in order to ensure the consistency of the left channel and the right channel, the two sides of the single-section double-channel rear roller (8) are respectively provided with a thread guide post (87) and a thread guide hole (88) structure, so that the axial connection and transmission of the multiple rollers are facilitated, and a roller shaft is fixed on a roller seat through a roller bearing (89);
the double-channel rear roller (8) is matched with the corresponding double-channel rear upper rubber roller (9), the double-channel rear upper rubber roller (9) comprises two rows of rubber roller sleeves A (91) and rubber roller sleeves B (92) with independent rotation freedom degrees, the two rows of rubber roller sleeves are fixed on a rubber roller shaft (93) through bearings (94) and are in interference fit, the outer diameters of the rubber roller sleeves A (91) and the rubber roller sleeves B (92) are the same, the two rows of rubber roller sleeves are respectively in contact with a fixed toothed ring (83) and a movable sleeve toothed ring (82) of the double-channel rear roller (8), driven rotation is achieved through the double-channel rear roller (8), and the surface linear speeds of the two rows of rubber roller sleeves are matched with the surface linear speeds of the fixed toothed ring (83) and the movable sleeve toothed ring (82) of the double-channel rear roller (8);
roller (8) and binary channels back rubberizing roller (9) form two and have the grip of independent rotation degree of freedom and keep silent, two grip keep silent and form a draft zone with preceding roller (12) respectively, roller (8) and binary channels are down sold (11) and are worn two isometric down aprons of cover simultaneously behind the binary channels, down the apron be apron A (23) and apron B (24) down respectively, two channel back rubberizing roller (9) are worn to cover two isometric apron on with binary channels top round pin (10) simultaneously, the apron includes apron A (25) and apron B (26), two equidistant apron draft zones that have independent draft multiples have been formed.
2. The equal-distance double-channel ring spinning device with single drafting zone as claimed in claim 1, characterized in that the double-channel upper pin (10) is a central line symmetrical structure, forming two left and right working units, for example left side working unit: an upper pin elastic nipper B (102) and an upper pin elastic nipper A (101) are sequentially fixed on the left side of an upper pin main body support (107), a leather collar left limit (105) and a leather collar right limit (106) are respectively fixed above the upper pin elastic nipper A (101) and the upper pin elastic nipper B (102), and a spacing block fixing buckle (103) provided with a circular bulge is arranged in the middle of the front part of the upper pin main body support (107);
the double-channel lower pin (11) is of a center line symmetrical structure, and a left working unit is taken as an example: the pin joint comprises a lower pin channel A (111) and a lower pin channel B (112), wherein a limit spacer (113) is arranged between the lower pin channel A (111) and the lower pin channel B (112);
the double-channel upper pin (10) and the double-channel lower pin (11) respectively transversely limit the upper and lower groups of left and right juxtaposed aprons, so that the left and right juxtaposed aprons can keep stable transverse positions in the operation process, and the stability of roving drafting is ensured.
3. The single-draft-zone double-channel ring spinning device according to claim 1 or 2, further comprising a negative pressure collecting tube (14) for compact spinning, wherein the double-channel negative pressure collecting groove (31) on the negative pressure collecting tube (14) for compact spinning is Y-shaped, two bundles of fibers output from the nip of the front roller (12) enter the front end of the negative pressure collecting groove for Y-shaped respectively, and under the action of air flow, the fiber bundles run along the collecting groove and are collected into a single fiber bundle in the bottom end area of the negative pressure collecting groove for Y-shaped, and the single fiber bundle is held by the output roller (16) and the output rubber roll for output and then twisted into yarn.
4. The equal-space double-channel ring spinning device of the single drafting zone according to claim 3, wherein a condensing spinning negative pressure air flow guide piece (15) is arranged above the double-channel negative pressure condensing groove (31), the top end of the condensing spinning negative pressure air flow guide piece is closed, the left side and the right side of the condensing spinning negative pressure condensing groove are provided with open channels with the height of 1-2 mm and the width of 6-8 mm, the front end and the rear end are fiber strand passing positions, the transverse width of a fiber strand inlet close to the front roller (12) is larger, the transverse width of a fiber strand outlet close to the condensing spinning output roller (16) is smaller, and the condensing spinning negative pressure air flow guide piece (15) is used for obtaining larger transverse air flow velocity and pressure intensity so as to meet the transverse condensing of two fiber strands with larger space and realize the smooth spinning process.
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| CN202210155862.6A CN114540999B (en) | 2022-02-21 | 2022-02-21 | Equal-spacing double-channel ring spinning device with single drafting zone |
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| CN115094551B (en) * | 2022-06-17 | 2024-06-14 | 安徽富春纺织有限公司 | Sliver cross overlapping preventing guiding device for rear frame of roving frame in spinning processing |
| CN115637513B (en) * | 2022-11-07 | 2023-06-23 | 浙江新澳纺织股份有限公司 | Spinning frame capable of producing multi-component wool spinning |
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| CN108977946A (en) * | 2018-09-06 | 2018-12-11 | 武汉纺织大学 | A kind of uniform drafting method of spinning frame back zone high draft |
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| CN114540999A (en) | 2022-05-27 |
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