CN114016203B - Weaving method and equipment of tubular double-comb warp knitted fabric - Google Patents
Weaving method and equipment of tubular double-comb warp knitted fabric Download PDFInfo
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- CN114016203B CN114016203B CN202111297423.0A CN202111297423A CN114016203B CN 114016203 B CN114016203 B CN 114016203B CN 202111297423 A CN202111297423 A CN 202111297423A CN 114016203 B CN114016203 B CN 114016203B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/20—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting articles of particular configuration
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
- D04B27/06—Needle bars; Sinker bars
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
- D04B27/10—Devices for supplying, feeding, or guiding threads to needles
- D04B27/24—Thread guide bar assemblies
- D04B27/26—Shogging devices therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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Abstract
The invention relates to a weaving method and equipment of a tubular double-bar warp knitting fabric, wherein the equipment comprises a looping mechanism, a guide bar transverse moving mechanism, a warp feeding mechanism and a drawing and coiling mechanism; the looping mechanism comprises four needle beds which are arranged in a square shape; a group of yarn guide bars are arranged right above each needle bed, each group of yarn guide bars consists of a front comb and a rear comb, and each yarn guide bar is provided with a corresponding yarn guide needle, a groove needle and a sinker; the guide bar shogging mechanism is used for controlling the shogging direction and the shogging needle number of the four groups of guide bars; the let-off mechanism is used for feeding eight groups of yarns into needle holes of eight groups of yarn guide needles; the method comprises the following steps: the four fabrics are connected by utilizing the staggered positions and the warp flat tissues of the four knitting needles at the junction while respectively knitting the four fabrics, so that the knitting of the cylindrical fabric is realized. The equipment and the method have wide use raw materials, can select cotton, hemp, wool, silk or chemical fiber according to actual needs, and design and produce the warp-knitted tubular fabrics with different properties and different applications.
Description
Technical Field
The invention relates to a knitting method and equipment of a seamless tubular double-comb warp knitting fabric, belonging to the technical field of industrial textiles.
Background
Due to good formability and longitudinal performance consistency, the tubular once-forming fabric has a good application prospect in the fields of medical treatment, construction, aerospace, industrial filtration and the like, and the demand is further increased. At present, seamless pipes formed by molds occupy the main market, but due to insufficient flexibility, partial fields such as medical treatment and industrial filtration fields are not involved, so that the research of seamless tubular fabrics becomes the main trend of expanding the influence of the industry in the textile industry.
The warp knitting technology is high in content, excellent in production efficiency, unique in product performance, high in efficiency plain weave performance, good in jacquard performance, flexible in mesh weave performance, good in orientation weave performance, high in forming weave performance and good in three-dimensional structure weave performance, is an important source of high-end clothing and home textile fabrics, is an important basic material in the high-tech field, and therefore becomes a mainstream production mode in the textile industry.
The tubular warp knitting fabric can be knitted on a double-needle bed warp knitting machine or a seamless underwear machine, but the equipment cost is high, the production speed is low, and the long-term industrial requirement can not be met; the traditional high-speed warp knitting machine is low in cost, few in guide bar configuration, wide in raw material adaptability, high in speed which can reach 5000rpm at most, and high in production efficiency, and can only produce fabrics with a planar structure, so that the application field of the device is limited, and the advantages of the high-speed warp knitting machine cannot be exerted.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for knitting a tubular double-bar warp knitted fabric, the apparatus is knitted by a front bar and a rear bar, the front bar is knitted to form a warp flat structure, the rear bar is knitted to form a chain stitch, the front bar and the rear bar are laid with yarns in opposite directions, the chain stitch restrains the warp flat structure by a longitudinal extension line thereof so as not to be inclined, and the warp flat structure transversely links adjacent chain stitches by the extension line thereof to form a tubular fabric.
In order to achieve the purpose, the invention adopts the following scheme:
a production device of a tubular double-bar warp knitted fabric comprises a looping mechanism, a guide bar shogging mechanism, a warp feeding mechanism and a drawing and coiling mechanism;
the looping mechanism comprises four needle beds which are arranged in a square a; a group of guide bars are arranged right above each needle bed, the four groups of guide bars are arranged in a square b shape, each group of guide bars consists of a front comb and a rear comb, one side of the square a and one side of the square b are parallel to each other, and the central points of the square a and the square b are positioned on the same vertical line; each guide bar is provided with yarn guide needle blocks which are arranged in parallel along a horizontal straight line, the yarn guide needle blocks are provided with yarn guide needles which are uniformly distributed along the horizontal straight line according to a certain distance, groove needles and sinkers are arranged on respective needle beds, the groove needles are positioned below the yarn guide needles, needle openings of the groove needles face the front of the machine, the sinkers are positioned in the front of the machine, so that the sinkers move back and forth between the groove needles, the yarn guide needles are driven by the guide bars to move transversely in front of the machine and behind the machine and complete looping actions by matching with the groove needles and the sinkers; the size of the needle bed and the size of the yarn guide bar can be adjusted according to the requirement of the actual fabric;
four needle beds arranged in a square a form four intersection points in the looping mechanism, each intersection point is composed of two groove needles of the adjacent needle beds which are closest to the intersection point, after the current course is looped on one of the groove needles, the next stitch course is looped on the other groove needle through the traversing of a guide bar, and therefore the fabrics of the adjacent needle beds are connected to form the tubular fabric;
the guide bar transverse moving mechanism comprises four electronic transverse moving mechanisms; the four electronic shogging mechanisms are respectively positioned on one side of the four groups of guide bars and are used for respectively controlling the shogging direction and the shogging needle number of the four groups of guide bars; the bottom of the mechanism is provided with a roller, so that the position of the transverse moving mechanism can be changed along with the change of the width of the machine;
the let-off mechanism is used for respectively sending out eight groups of yarns from a warp beam and sending the yarns into needle holes of eight groups of yarn guide needles through a tension rod, and each group of yarn guide needles are yarn guide needles on each yarn guide bar;
the drawing and winding mechanism is used for drawing out the woven fabric in the weaving area with proper tension and winding the fabric into a cloth roll so as to facilitate the subsequent treatment.
As a preferable technical scheme:
the production equipment of the cylindrical double-comb warp knitted fabric comprises eight electronic warp feeding mechanisms; the tension rods are four in number and are arranged in a square c shape, two groups of pan heads are arranged above each tension rod, eight groups of yarns are respectively positioned in the eight groups of pan heads, each group of pan heads is positioned on a warp beam, each group of pan heads is composed of 1-8 pan heads, each group of pan heads is connected with an electronic warp feeding mechanism used for controlling the movement speed of the pan heads, one side of the square a is parallel to one side of the square c, and the central point of the square a is positioned on the same vertical line.
According to the production equipment of the cylindrical double-comb warp knitted fabric, the drawing and winding mechanism comprises an electronic curling controller, a pair of main drawing rollers, an adjustable drawing roller, an auxiliary drawing roller, a cloth roller, a drawing plate and an arc-shaped track;
the pair of main drawing rollers are adjacently installed and located on the same horizontal plane, the adjustable drawing roller is detachably installed on the arc-shaped track and located below the main drawing roller, the auxiliary drawing roller is fixed below the adjustable drawing roller, the auxiliary drawing roller and the auxiliary drawing roller are located on the same horizontal plane, the cloth roller is installed on the drawing plate and located on one side, far away from the auxiliary drawing roller, of the auxiliary drawing roller, and the electronic curling controller is used for controlling the rotating speed of the main drawing roller and further controlling the drawing speed;
the electronic winding controller is used for controlling the drawing speed, the main drawing roller draws the fabric out of the weaving area through the pressure between the two drawing rollers, and finally the grey fabric is conveyed to the cloth roller through the adjustable drawing roller, the auxiliary drawing roller and the auxiliary drawing roller, and the cloth roller is fixed by the drawing plate. The adjustable pulling roller can adjust the front and back positions through the rail, and the pulling force on the grey cloth can be adjusted through different positions.
According to the production equipment of the tubular double-comb warp knitted fabric, the adjustable pulling roller is detachably arranged on the arc-shaped track through the screw, the position of the adjustable pulling roller can be changed on the arc-shaped track, the adjustable pulling roller is fixed at a certain position of the arc-shaped track through the screw, and the wrapping angle between the adjustable pulling roller and the grey cloth is different when the adjustable pulling roller is at different positions, so that the pulling force on the grey cloth is changed.
The production equipment of the tubular double-comb warp knitted fabric further comprises a main frame; the main frame comprises four frames which are arranged in a square d shape and are respectively positioned at four corners of the equipment and used for supporting the warp beam, the tension rod and the auxiliary traction roller, one side of the square a and one side of the square d are mutually parallel, and the central points of the square a and the square d are positioned on the same vertical line.
According to the production equipment of the tubular double-comb warp knitted fabric, the four needle beds arranged in the square a shape are mutually fixed through the steel plate, the two iron sheets and the four screws, the two iron sheets are crossed on the steel plate to form an X shape, and the four screws respectively penetrate through two ends of the two iron sheets and the steel plate into the two needle beds in sequence; the four guide bars arranged in the square b shape are fixed with each other through a steel plate, two iron sheets and four screws, the two iron sheets are crossed on the steel plate to form an X shape, and the four screws respectively penetrate through two ends of the two iron sheets and the steel plate in sequence and penetrate into the two guide bars; the speed of the warp knitting machine is high in the operation process, the mechanism for connecting the needle bed and the mechanism for connecting the yarn guide bar contain two iron sheets except for a steel plate and screws, and the two iron sheets are crossed on the steel plate to form an X shape, so that the overall stability can be improved.
The invention also provides a knitting method of the tubular double-comb warp knitted fabric, which adopts the production equipment of the tubular double-comb warp knitted fabric, and the knitting process is as follows:
(a) Respectively penetrating eight warp yarns into needle holes of eight groups of yarn guide needles from the longitudinal direction, and feeding the warp yarns into a weaving area;
(b) The front comb and the rear comb of each group of guide bars are respectively and correspondingly looped to the first row of the warp-knitting weave and the chain knitting weave (namely, the front comb of each group of guide bars is looped to the first row of the warp-knitting weave, and the rear comb of each group of guide bars is looped to the first row of the chain knitting weave), and the front padding yarn of the needle is finished and then the needle is moved to the needle back;
(c) Let i =2;
(d) The front comb of each group of guide bars carries out needle back shogging, the shogging direction is to move one needle leftwards, loop formation of the ith row of the warp flat tissue is carried out, in the process, the leftmost guide needle of the front comb of each group of guide bars loops on the rightmost needle of the adjacent needle bed, so that cloth pieces knitted by the adjacent needle beds are connected, meanwhile, the back comb of each group of guide bars does not carry out needle back shogging, and loop formation of the ith row of the chaining tissue is continuously carried out on the current needle;
(e) The front comb of each group of guide bars carries out needle back shogging, the shogging direction is to move one needle to the right, loop formation of the (i + 1) th row of the warp flat tissue is carried out, in the process, the rightmost guide needle of the front comb of each group of guide bars loops on the leftmost knitting needle of the adjacent needle bed, meanwhile, the back comb of each group of guide bars does not carry out needle back shogging, and loop formation of the (i + 1) th row of the chaining tissue is continuously carried out on the current knitting needle;
(f) Judging whether the length of the grey cloth reaches an expected value, if so, ending to obtain a cylindrical double-comb warp-knitted fabric; and otherwise, enabling i = i +1, and returning to the step (d), wherein in the process, each needle bed is transversely moved left and right through the front comb, so that the knitting needles at the edges of the needle beds form loops on the adjacent needle beds, and the fabrics knitted by the two left and right adjacent needle beds are connected at one time, thereby forming a seamless tubular structure.
As a preferred technical scheme:
in the weaving method of the tubular double-comb warp knitted fabric, the warp yarn raw material is more than one of terylene, chinlon, cotton, wool and silk; the production speed is 100-1000 rpm.
In the method for knitting the tubular double-comb warp knitted fabric, the warp flat structure is a two-needle warp flat structure.
In the knitting method of the tubular double-comb warp knitted fabric, the tubular double-comb warp knitted fabric is a seamless tubular structure, and the tubular double-comb warp knitted fabric comprises a two-needle warp flat structure and a chaining structure; seen from the front side of the fabric, the loop columns of the two-needle warp flat weave are positioned above the loop columns of the chaining weave; seen from the reverse side of the fabric, the extension lines of the two-needle warp flat structure are positioned above the extension lines of the chain knitting structure; the chain knitting tissue restrains the two-needle warp flat tissue so that the warp flat tissue does not skew, and the two-needle warp flat tissue transversely links the adjacent chain knitting tissue by utilizing the extension lines of the two-needle warp flat tissue; the inner diameter of the tubular double-comb warp knitted fabric is 1-10 cm.
The principle of the invention is as follows:
the tubular warp knitting fabric can be knitted on a double-needle bed warp knitting machine or a seamless underwear machine, but the equipment cost is high, the occupied area of the equipment is large, the structure of the seam of the tubular fabric is different due to only two needle beds, obvious seams still exist, and the produced fabric is mainly of a mesh tissue and is difficult to meet the industrial requirements for a long time; the equipment comprises four needle beds, the four fabrics are connected through the same tissue by the shogging of the yarn guide bars between the adjacent needle beds, the tissue is plain weave and has no meshes, so the equipment can overcome the limitations that the two needle bed warp knitting machines or seamless underwear and the seam of the product have different tissues and limited product types.
The traditional high-speed warp knitting machine has low cost, less guide bar configuration, wide raw material adaptability, high speed and high production efficiency, but only can produce fabrics with a plane structure, and the fundamental reason is that only one needle bed is arranged; the equipment of the invention comprises four needle beds which are arranged in a square shape, the yarn guide bar transversely moves left and right to connect four pieces of fabrics, and the width of the needle beds is adjustable, so the equipment of the invention can produce tubular fabrics with different tube diameters.
Compared with the tubular warp knitted fabric prepared by the prior art, the tubular double-comb warp knitted fabric has a more uniform structure, four groups of guide bars transversely move left and right during looping, the fabrics of adjacent needle beds are connected through the same tissue, and the structure of a seam part is consistent with that of a non-seam part, so that the mechanical property of the tubular double-comb warp knitted fabric is more uniform.
Advantageous effects
The production equipment of the tubular double-comb warp-knitted fabric has the advantages of simple structure, low cost, high speed and wide raw material adaptability, and can use various types of raw materials, such as various natural fibers, chemical fibers, high-performance fibers and the like; the knitting method of the tubular double-comb warp knitted fabric is high in efficiency, and the prepared tubular double-comb warp knitted fabric is stable in structure and good in mechanical property.
Drawings
FIG. 1 is a three-dimensional schematic view of a tubular double-comb warp knit fabric structure; wherein, the left figure is a front view of the fabric, and the right figure is a back view of the fabric;
FIG. 2 is a three-dimensional schematic view of a production apparatus for a tubular double comb warp knit fabric;
FIG. 3 is a side view of a production apparatus for a tubular double comb warp knit fabric;
FIGS. 4 to 5 are detailed views of the knitting mechanism of the apparatus for producing a tubular double-comb warp knitted fabric;
FIG. 6 is a schematic view showing the connection of needle beds or guide bars of the manufacturing apparatus of the tubular double warp knitting fabric;
wherein, 1-two-needle warp flat weave, 2-chaining weave, 3-two-needle warp flat weave extension line, 4-two-needle warp flat weave loop column, 5-chaining weave loop column, 6-chaining weave extension line, 7-looping mechanism, 71-guide bar I, 72-guide bar II, 73-guide bar III, 74-guide bar IV, 75-needle bed I, 76-needle bed II, 77-needle bed III, 78-needle bed IV, 79-guide needle block, 710-groove needle, 711-sinker, 712-guide needle, 713-screw, 714-steel plate, 715-iron sheet, 716-front comb, 717-rear comb, 8-guide bar shifting mechanism, 81-electronic shifting mechanism I, 82-electronic shifting mechanism II, 83-electronic transverse moving mechanism III, 84-electronic transverse moving mechanism IV, 9-let-off mechanism, 91-electronic let-off mechanism I, 92-electronic let-off mechanism II, 93-electronic let-off mechanism III, 94-electronic let-off mechanism IV, 95-beam I, 96-beam II, 97-beam III, 98-beam IV, 10-drawing and reeling mechanism, 101-electronic curl controller, 102-main drawing roller, 103-adjustable drawing roller, 104-auxiliary drawing roller, 105-auxiliary drawing roller, 106-cloth roller, 107-drawing plate, 108-arc track, 11-total frame, 111-frame I, 112-frame II, 113-frame III, 114-frame IV, 115-tension rod I, 116-tension rod II, 117-tension rods III, 118-tension rods IV.
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 can be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the claims appended to the present application.
A production equipment of a tubular double-bar warp knitting fabric is shown in figures 2-5 and comprises a looping mechanism 7, a bar shogging mechanism 8, a let-off mechanism 9, a drawing and coiling mechanism 10 and a general frame 11;
the looping mechanism 7 comprises four needle beds which are arranged in a square a shape and are respectively marked as a needle bed I75, a needle bed II 76, a needle bed III 77 and a needle bed IV 78, the needle beds are mutually fixed through a steel plate 714, two iron sheets 715 and four screws 713, the two iron sheets 715 are crossed on the steel plate 714 to form an X shape, and the four screws 713 respectively penetrate through two ends of the two iron sheets 715 and the steel plate 714 into the two needle beds in sequence; a group of guide bars are arranged right above each needle bed, the four groups of guide bars are arranged in a square b shape and are respectively marked as a guide bar I71, a guide bar II 72, a guide bar III 73 and a guide bar IV 74, one side of the square a and one side of the square b are parallel to each other, the central points of the two sides are positioned on the same vertical line, the guide bars are fixed with each other through a steel plate 714, two iron sheets 715 and four screws 713, the two iron sheets 715 are crossed on the steel plate 714 to form an X shape, and the four screws 713 respectively penetrate through two ends of the two iron sheets 715 and the steel plate 714 into the two groups of guide bars; each group of guide bars consists of a front comb 716 and a rear comb 717; each guide bar is provided with yarn guide needle blocks 79 which are arranged in parallel along a horizontal straight line, the yarn guide needle blocks 79 are provided with yarn guide needles 712 which are uniformly distributed along the horizontal straight line according to a certain distance, the groove needles 710 and the sinkers 711 are arranged on respective needle beds, the groove needles 710 are positioned below the yarn guide needles 712, the needle mouths of the groove needles 710 face the front of the machine, the sinkers 711 are positioned in the front of the machine, so that the sinkers 711 move back and forth between the groove needles 710, the yarn guide needles 712 move transversely in the front of the machine and behind the machine under the driving of the guide bars, and the looping action is completed by matching with the groove needles 710 and the sinkers 711; the size of the needle bed and the size of the yarn guide bar can be adjusted according to the requirement of the actual fabric;
four needle beds arranged in a square a form four intersection points in the looping mechanism 7, each intersection point is composed of two grooved needles 710 which are closest to the intersection point of the adjacent needle beds, after the current course is looped on one grooved needle 710, the next stitch course is looped on the other grooved needle 710 through the traversing of a guide bar, and therefore fabrics of the adjacent needle beds are connected to form a tubular fabric;
the guide bar shogging mechanism 8 comprises four electronic shogging mechanisms, which are respectively marked as an electronic shogging mechanism I81, an electronic shogging mechanism II 82, an electronic shogging mechanism III 83 and an electronic shogging mechanism IV 84; the four electronic shogging mechanisms are respectively positioned on one side of the four groups of guide bars and are used for respectively controlling the shogging direction and the shogging needle number of the four groups of guide bars;
the let-off mechanism 9 comprises eight electronic let-off mechanisms, which are respectively marked as an electronic let-off mechanism I91, an electronic let-off mechanism II 92, an electronic let-off mechanism III 93, an electronic let-off mechanism IV 94, an electronic let-off mechanism V, an electronic let-off mechanism VI, an electronic let-off mechanism VII and an electronic let-off mechanism VIII; the tension rods are four and arranged in a square c shape and are respectively marked as a tension rod I115, a tension rod II 116, a tension rod III 117 and a tension rod IV 118, two groups of pan heads are respectively arranged above each tension rod, eight groups of yarns are respectively positioned in the eight groups of pan heads, each group of pan heads is positioned on a warp beam, each group of pan heads is composed of 1-8 pan heads, each group of pan heads is connected with an electronic warp feeding mechanism for controlling the movement speed of the coil heads, one side of the square a and one side of the square c are parallel to each other, and the central point of the square a and the central point of the square c are positioned on the same vertical line; the let-off mechanism 9 is used for respectively sending out eight groups of yarns from a warp beam and sending the yarns into needle holes of eight groups of guide needles 712 through a tension rod, wherein each group of guide needles 712 is the guide needle 712 on each guide bar; wherein, the number of the warp beams is 4, the warp beams correspond to the tension rods one by one and are respectively marked as warp beam I95, warp beam II 96, warp beam III 97 and warp beam IV 98;
the drawing and winding mechanism 10 comprises an electronic curl controller 101, a pair of main drawing rollers 102, an adjustable drawing roller 103, an auxiliary drawing roller 104, an auxiliary drawing roller 105, a cloth roller 106, a drawing plate 107 and an arc-shaped track 108; a pair of main drawing rollers 102 are adjacently installed and located on the same horizontal plane, an adjustable drawing roller 103 is detachably installed on an arc-shaped track 108 through screws and located below the main drawing rollers 102, an auxiliary drawing roller 104 is fixed below the adjustable drawing roller 103, an auxiliary drawing roller 105 and the auxiliary drawing roller 104 are located on the same horizontal plane, a cloth roller 106 is installed on a drawing plate 107 and located on one side, far away from the auxiliary drawing roller 104, of the auxiliary drawing roller 105, and an electronic curling controller 101 is used for controlling the rotating speed of the main drawing rollers 102 and further controlling the drawing speed; the drawing and coiling mechanism 10 is used for drawing out the woven fabric in the weaving area with proper tension and coiling the fabric into a cloth roll;
the switchboard frame comprises four frames which are arranged in a square d shape and are respectively positioned at four corners of the equipment, namely a frame I111, a frame II 112, a frame III 113 and a frame IV 114, and the frames are used for supporting a warp beam, a tension rod and an auxiliary traction roller, wherein one side of the square a and one side of the square d are parallel to each other, and the central points of the square a and the square d are positioned on the same vertical line.
The knitting method for preparing the tubular double-comb warp knitted fabric by adopting the production equipment comprises the following knitting processes:
(a) Respectively penetrating eight warp yarns into needle holes of eight groups of yarn guide needles from the longitudinal direction, and feeding the warp yarns into a weaving area; the warp yarn is made of more than one of terylene, chinlon, cotton, wool and silk; the production speed is 100-1000 rpm;
(b) The front comb and the rear comb of each group of guide bars are respectively and correspondingly looped to a first row of a two-needle warp-flat weave and a first knitted chain weave (namely, the front comb of each group of guide bars is looped to the first row of the warp-flat weave, and the rear comb of each group of guide bars is looped to the first row of the knitted chain weave), and the front padding yarn of the needles is completed and then the needles are moved to the needle back;
(c) Let i =2;
(d) The front comb of each group of guide bars carries out needle back shogging, the shogging direction is to move one needle leftwards, loop formation of the ith row of the warp flat tissue is carried out, in the process, the leftmost guide needle of the front comb of each group of guide bars loops on the rightmost needle of the adjacent needle bed, so that cloth pieces knitted by the adjacent needle beds are connected, meanwhile, the back comb of each group of guide bars does not carry out needle back shogging, and loop formation of the ith row of the chaining tissue is continuously carried out on the current needle;
(e) The front comb of each group of guide bars carries out needle back shogging, the shogging direction is to move one needle to the right, loop formation of the (i + 1) th row of the warp flat tissue is carried out, in the process, the rightmost guide needle of the front comb of each group of guide bars loops on the leftmost knitting needle of the adjacent needle bed, meanwhile, the back comb of each group of guide bars does not carry out needle back shogging, and loop formation of the (i + 1) th row of the chaining tissue is continuously carried out on the current knitting needle;
(f) Judging whether the length of the grey cloth reaches an expected value, if so, ending to obtain a cylindrical double-comb warp-knitted fabric; and otherwise, i = i +1, and the step (d) is returned, in the process, each needle bed is transversely moved left and right through the front comb, so that the knitting needles at the edges of the needle beds form loops on the adjacent needle beds, and the fabrics knitted by the two left and right adjacent needle beds are connected at one time, so that a seamless tubular structure is formed.
As shown in figure 1, the prepared tubular double-comb warp knitting fabric is of a seamless tubular structure, and comprises a two-needle warp flat structure 1 and a chaining structure 2; seen from the front side of the fabric, the loop columns of the two-needle warp flat weave are positioned above the loop columns 5 of the chaining weave; seen from the reverse side of the fabric, the extension line 3 of the two-needle warp flat structure is positioned above the extension line 6 of the chaining structure; the chain knitting tissue 2 restrains the two-needle warp flat tissue 1 so that the warp flat tissue does not incline, and the two-needle warp flat tissue 1 transversely links the adjacent chain knitting tissue 2 by utilizing an extension line of the two-needle warp flat tissue; the inner diameter of the tubular double-comb warp knitted fabric is 1-10 cm.
Claims (9)
1. A knitting method of a tubular double-bar warp knitting fabric is characterized in that adopted production equipment comprises a looping mechanism (7), a guide bar shogging mechanism (8), a warp feeding mechanism (9) and a drawing and coiling mechanism (10);
the looping mechanism (7) comprises four needle beds which are arranged in a square a; a group of guide bars are arranged right above each needle bed, the four groups of guide bars are arranged in a square b shape, each group of guide bars consists of a front comb and a rear comb, one side of the square a and one side of the square b are parallel to each other, and the central points of the square a and the square b are positioned on the same vertical line; each guide bar is provided with yarn guide needle blocks which are arranged in parallel along a horizontal straight line, the yarn guide needle blocks are provided with yarn guide needles which are uniformly distributed along the horizontal straight line according to a certain distance, groove needles and sinkers are arranged on respective needle beds, the groove needles are positioned below the yarn guide needles, needle mouths of the groove needles face the front of the machine, and the sinkers are positioned in the front of the machine;
four needle beds arranged in a square a form four intersection points in the looping mechanism (7), and each intersection point consists of two groove needles of the adjacent needle beds which are closest to the intersection point;
the guide bar shogging mechanism (8) comprises four electronic shogging mechanisms; the four electronic shogging mechanisms are respectively positioned on one side of the four groups of guide bars and are used for respectively controlling the shogging direction and the shogging needle number of the four groups of guide bars;
the let-off mechanism (9) is used for respectively sending out eight groups of yarns from the warp beam and sending the yarns into needle holes of eight groups of yarn guide needles through the tension rod, and each group of yarn guide needles are yarn guide needles on each yarn guide bar;
the drawing and coiling mechanism (10) is used for drawing out the woven fabric in the weaving area with proper tension and coiling the fabric into a cloth roll;
the knitting method of the tubular double-comb warp knitting fabric adopting the production equipment has the following knitting flows:
(a) Respectively penetrating eight warp yarns into needle holes of eight groups of yarn guide needles from the longitudinal direction, and feeding the warp yarns into a weaving area;
(b) The front comb and the rear comb of each group of yarn guide bars are respectively and correspondingly looped in a first row of a warp-flat weave and a chain-knitting weave, and the yarns are laid in front of needles and then moved to the needle back;
(c) Let i =2;
(d) The front comb of each group of guide bars carries out needle back shogging, the shogging direction is to move one needle leftwards, loop formation of the ith row of warp flat tissue is carried out, in the process, the leftmost guide needle of the front comb of each group of guide bars loops on the rightmost needle of an adjacent needle bed, meanwhile, the back comb of each group of guide bars does not carry out needle back shogging, and loop formation of the ith row of chaining tissue is continuously carried out on the current needle;
(e) The front comb of each group of yarn guide bars carries out needle back shogging, the shogging direction is to move a needle rightwards, loop forming of the (i + 1) th row of a warp plain weave is carried out, in the process, the rightmost yarn guide needle of the front comb of each group of yarn guide bars forms a loop on the leftmost knitting needle of an adjacent needle bed, meanwhile, the back comb of each group of yarn guide bars does not carry out needle back shogging, and loop forming of the (i + 1) th row of a chaining weave is continuously carried out on the current knitting needle;
(f) Judging whether the length of the grey cloth reaches an expected value, if so, ending to obtain a cylindrical double-comb warp-knitted fabric; otherwise, let i = i +1, return to step (d).
2. A knitting method of tubular double comb warp knitting fabric as claimed in claim 1, characterized in that the let-off mechanism (9) comprises eight electronic let-off mechanisms; four tension rods are arranged in a square c shape, two groups of pan heads are respectively arranged above each tension rod,
eight groups of yarns are respectively positioned in eight groups of pan heads, each group of pan heads is positioned on a warp beam, each group of pan heads consists of 1-8 pan heads, each group of pan heads is connected with an electronic let-off mechanism for controlling the movement speed of the pan heads, one side of the square a and one side of the square c are parallel to each other, and the central point of the square a and the central point of the square c are positioned on the same vertical line.
3. A knitting method of tubular double comb warp knitting fabric according to claim 1, characterized in that the pulling and winding mechanism (10) comprises an electronic curl controller (101), a pair of main pulling rolls (102), an adjustable pulling roll (103), a sub pulling roll (104), an auxiliary pulling roll (105), a cloth roller (106), a pulling plate (107) and an arc-shaped rail (108);
a pair of main pulling rollers (102) are adjacently installed and located on the same horizontal plane, an adjustable pulling roller (103) is detachably installed on an arc-shaped rail (108) and located below the main pulling rollers (102), an auxiliary pulling roller (104) is fixed below the adjustable pulling roller (103), an auxiliary pulling roller (105) and the auxiliary pulling roller (104) are located on the same horizontal plane, a cloth roller (106) is installed on a pulling plate (107) and located on one side, far away from the auxiliary pulling roller (104), of the auxiliary pulling roller (105), and an electronic curling controller (101) is used for controlling the rotating speed of the main pulling rollers (102).
4. A knitting method of tubular double comb warp knitting fabric as claimed in claim 3, characterized in that the adjustable pulling roll (103) is detachably attached to the arc-shaped rail (108) by a screw.
5. A knitting method of tubular double comb warp knitting fabric as claimed in claim 3, characterized in that the production facility of tubular double comb warp knitting fabric further comprises a main frame (11); the main frame comprises four frames which are arranged in a square d shape and are respectively positioned at four corners of the equipment and used for supporting the warp beam, the tension rod and the auxiliary traction roller, one side of the square a and one side of the square d are mutually parallel, and the central points of the square a and the square d are positioned on the same vertical line.
6. The knitting method of a tubular double-comb warp knitting fabric according to claim 1, characterized in that four needle beds arranged in a square a are fixed to each other through a steel plate (714), two iron sheets (715) and four screws (713), the two iron sheets (715) are crossed on the steel plate (714) to form an X shape, and the four screws (713) respectively penetrate through two ends of the two iron sheets (715) and the steel plate (714) into the two needle beds in sequence; the four guide bars arranged in the square b shape are fixed with each other through a steel plate (714), two iron sheets (715) and four screws (713), the two iron sheets (715) are crossed on the steel plate (714) to form an X shape, and the four screws (713) respectively penetrate through two ends of the two iron sheets (715) and the steel plate (714) in sequence to penetrate into the two guide bars.
7. The knitting method of a tubular double-comb warp knitted fabric according to claim 1, wherein the warp yarn is made of one or more of polyester, nylon, cotton, wool and silk; the production speed is 100-1000 rpm.
8. The method of claim 1, wherein the warp flat knit is a two-needle warp flat knit.
9. The knitting method of a tubular double comb warp knitting fabric as claimed in claim 8, wherein the tubular double comb warp knitting fabric is a seamless tubular structure having a two-needle warp flat structure and a knit chain structure; seen from the front side of the fabric, the loop columns of the two-needle warp flat weave are positioned above the loop columns of the chaining weave; seen from the reverse side of the fabric, the extension lines of the two-needle warp flat structure are positioned above the extension lines of the chain knitting structure; the chain knitting tissue restrains the two-needle warp flat tissue, and the two-needle warp flat tissue transversely links the adjacent chain knitting tissue by utilizing the extension lines of the two-needle warp flat tissue; the inner diameter of the tubular double-comb warp knitted fabric is 1-10 cm.
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| CN202111297423.0A CN114016203B (en) | 2021-11-04 | 2021-11-04 | Weaving method and equipment of tubular double-comb warp knitted fabric |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2043980U (en) * | 1988-06-08 | 1989-09-06 | 江苏武进纺织机械厂 | Colour stripe machine with double needle bed |
| CN103938361A (en) * | 2014-05-13 | 2014-07-23 | 紫罗兰家纺科技股份有限公司 | 3D forming weaving technology for household textile |
| CN104452071A (en) * | 2014-12-02 | 2015-03-25 | 江南大学 | Knitting method and equipment for cylindrical biaxial weft-knitting three-dimensional knitted structure |
| CN111910334A (en) * | 2020-08-12 | 2020-11-10 | 信泰(福建)科技有限公司 | Fabric warp let-off and threading method |
| CN112921492A (en) * | 2021-02-24 | 2021-06-08 | 江南大学 | Tubular double-needle-bar warp knitting machine |
-
2021
- 2021-11-04 CN CN202111297423.0A patent/CN114016203B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2043980U (en) * | 1988-06-08 | 1989-09-06 | 江苏武进纺织机械厂 | Colour stripe machine with double needle bed |
| CN103938361A (en) * | 2014-05-13 | 2014-07-23 | 紫罗兰家纺科技股份有限公司 | 3D forming weaving technology for household textile |
| CN104452071A (en) * | 2014-12-02 | 2015-03-25 | 江南大学 | Knitting method and equipment for cylindrical biaxial weft-knitting three-dimensional knitted structure |
| CN111910334A (en) * | 2020-08-12 | 2020-11-10 | 信泰(福建)科技有限公司 | Fabric warp let-off and threading method |
| CN112921492A (en) * | 2021-02-24 | 2021-06-08 | 江南大学 | Tubular double-needle-bar warp knitting machine |
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| CN114016203A (en) | 2022-02-08 |
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