CN108589016B - Flat filament and round filament mixed yarn supply system for warp knitting machine - Google Patents
Flat filament and round filament mixed yarn supply system for warp knitting machine Download PDFInfo
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- CN108589016B CN108589016B CN201810393104.1A CN201810393104A CN108589016B CN 108589016 B CN108589016 B CN 108589016B CN 201810393104 A CN201810393104 A CN 201810393104A CN 108589016 B CN108589016 B CN 108589016B
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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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
- D01D5/426—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by cutting films
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B23/00—Flat warp knitting machines
- D04B23/12—Flat warp knitting machines with provision for incorporating unlooped wefts extending from selvedge to selvedge
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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
- D04B27/16—Warp beams; Bearings therefor
- D04B27/20—Warp beam driving devices
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
- D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
- D04B35/14—Indicating, warning, or safety devices, e.g. stop motions responsive to thread breakage
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- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Knitting Machines (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention discloses a flat filament and round filament mixed yarn supply system for a warp knitting machine, and belongs to the technical field of warp knitting equipment. By providing a flat filament and round filament mixed yarn supply system for a warp knitting machine, the combination of a flat filament and round filament yarn supply system integrated with production and supply and a pan head sectional round filament yarn supply system is realized, so that the industrial package material of the polyolefin film which is easy to obtain can be directly selected in the production process as the starting of the flat yarn supply production and feeding of the warp knitting machine, and the production devices of film cold drafting, split film cutting hot drying, flat yarn hot drafting and the like are adopted, the integrated cooperative work of the conveying devices such as flat yarn synchronous transmission, flat yarn breakage detection, flat single yarn tension compensation and the like, simultaneously provides two sets of symmetrical yarn paths of the warp flat yarns and the weft flat yarns to form a high-integration production and supply integrated flat yarn supply system integrating the on-line production and the yarn supply of the flat yarns, the warp knitting circular yarn synchronous yarn supply is provided while the flat yarn warp knitting flow is shortened, and the development capacity and the production efficiency of novel warp knitting products of a warp knitting machine table are greatly improved.
Description
Technical Field
The invention relates to a yarn supply system for a warp knitting machine, in particular to a flat filament and round filament mixed yarn supply system for the warp knitting machine, and belongs to the technical field of warp knitting equipment.
Background
The warp knitting technology is in a unique looping form and can easily realize the knitting characteristics of various large-size mesh structures, so that the warp knitting machine with low machine number and large needle pitch can be rapidly expanded and applied in the production field of industrial raw materials such as sun-shading nets, woven bags, fishing nets and the like. Especially, with the emergence of various chemical fiber high-strength round filament single yarns and multifunctional film materials compounded by polyolefin resin and various anti-aging materials, flat filament single yarns are provided after being heated, extended, cut or drawn and then warped by a special flat filament warping machine, and single-layer and double-layer industrial warp knitting products in various forms can be woven by a warp knitting machine.
As a warp knitting machine for producing industrial warp knitting products by using polyolefin and high-strength chemical fiber raw materials, the warp knitting machine has wide application in the fields related to agriculture and animal husbandry, building industry and the like, the performance requirements and the variety of the products are various, the knitting raw materials are not limited to only utilizing flat filament materials to knit with each other, round filament single yarns are also adopted to bind and knit flat filament materials sometimes, or round filament materials are utilized to knit with each other to form a high-strength fishing net, namely, the raw materials of the yarns consumed by the warp knitting machine can be single-yarn flat filaments, single-yarn round filaments or the combination of the single-yarn flat filaments and the single-yarn round filaments, and a yarn supply system of the warp knitting machine is required, so that the warp knitting machine can not only provide the flat filament single yarns or the round filament single yarns independently, but also provide the flat filament single yarns and the round.
The high-speed and high-efficiency weaving form of warp knitting greatly depends on good warping and yarn supply before weaving, and for round-yarn supply of a warp knitting machine, because the acquisition of single yarn raw materials, warping equipment and warping process are basically the same as those of ordinary warp knitting yarn raw materials, warping equipment and process, the round-yarn supply of the warp knitting machine can adopt the traditional pan head sectional yarn supply; however, for the flat yarn supply of the warp knitting machine, because the flat yarn raw material is usually difficult to order from the market in the form of common yarn, if the conventional method is also adopted for pan head sectional yarn supply, the process flow is designed according to the sequence of yarn dividing, warping and weaving, the weaving manufacturer needs to purchase a series of processing equipment such as plastic film splitting, flat yarn heating and drafting, flat yarn warping machine and the like, so that the production line is too long, the equipment is more in variety, the occupied space is large, the investment cost is high, the raw material proportion and the production process of the polyolefin film material are more complicated, most weaving manufacturers are not familiar with the equipment and are difficult to master, and most weaving manufacturers are not willing to select to start from the production of the polyolefin material because the flat yarn supply of the flat yarn warp knitting raw material shows larger difference and obvious particularity compared with the pan head sectional yarn supply or the yarn supply of a creel of the conventional warp knitting machine, the warp knitting machine has the advantages that a long production line is not willing to be selected, and excessive types of flat filament pre-weaving and weaving equipment are purchased, so that the industrial production and popularization of warp knitting products are greatly limited, and the technical means for solving the problem is to provide an effective flat filament single yarn and round filament single yarn mixed yarn supply system scheme for the warp knitting machine.
Disclosure of Invention
The invention aims to provide a flat yarn and round yarn mixed yarn supply system for an integrated warp knitting machine, which can be used for producing flat yarn yarns on line by using polyolefin industrial film packaging materials which are relatively easy to obtain as production raw materials, integrating flat yarn single yarn production and yarn supply and round yarn single yarn supply into a whole and having high integration and small occupied area.
In order to achieve the above object, there is provided a flat yarn and round yarn feeding system for a warp knitting machine, the system comprising:
a warp knitting machine main body knitting part and a flat yarn supply production part; the main body weaving part of the warp knitting machine comprises a warp round wire yarn feeding system, a warp flat wire yarn feeding system, a weft flat wire yarn feeding system and a weft round wire yarn feeding system; the flat yarn supply production part comprises a warp flat yarn production system and a weft flat yarn production system;
the warp knitting machine main body knitting part is provided with flat yarn feeding production parts for directly feeding flat yarns, wherein a warp flat yarn production system is in butt joint with a warp flat yarn feeding system for feeding yarns, and a weft flat yarn production system is in butt joint with a weft flat yarn feeding system for feeding yarns.
Optionally, the warp round filament yarn feeding system is located outside the front side of the main body knitting part machine of the warp knitting machine, and follows the yarn advancing direction, and the warp round filament yarn path sequentially comprises a warp round filament yarn feeding warp beam unit, a warp round filament guide roller, a warp round filament tension rod, a warp round filament yarn dividing buckle and a first warp yarn guide comb;
the weft round filament yarn feeding system is positioned on the outer side of the rear side of the main body weaving part of the warp knitting machine, and along the yarn advancing direction, the weft round filament yarn path sequentially comprises a weft round filament yarn feeding warp beam unit, a weft round filament guide roller, a weft round filament tension rod, a weft round filament yarn dividing buckle and a second weft yarn guide comb.
Optionally, the warp flat filament yarn feeding system is located on the inner side of the front side of the main body knitting part machine of the warp knitting machine, and follows the yarn advancing direction, and the warp flat filament yarn path sequentially comprises a warp flat filament yarn breakage detection device, a warp flat filament yarn feeding warp beam unit, a warp flat filament guide roller, a warp flat filament tension finger, a warp flat filament yarn dividing buckle and a second warp yarn guide comb;
the weft yarn flat filament yarn feeding system is positioned on the inner side of the rear side of a main body weaving part machine of the warp knitting machine and along the yarn advancing direction, and a weft yarn flat filament yarn path sequentially comprises a weft yarn flat filament yarn breakage detection device, a weft yarn flat filament yarn feeding warp beam unit, a weft yarn flat filament guide roller, a weft yarn flat filament tension finger, a weft yarn flat filament yarn dividing buckle and a first weft yarn guide comb.
Optionally, the warp flat yarn feeding warp beam unit and the weft flat yarn feeding warp beam unit are respectively composed of a group of three roller rollers with the same diameter, driven by the same servo motor, and feed yarns in an active mode, and are respectively in transmission operation with a warp flat yarn production system and a weft flat yarn production system in the flat yarn feeding production part according to the yarn feeding linear speed 1: 1.
Optionally, the warp round wire yarn feeding warp beam unit and the weft round wire yarn feeding warp beam unit are respectively driven by a warp beam to drive the pan head to feed yarns in a segmented manner, and the warp beam is driven by the servo motor to feed yarns in an active manner.
Optionally, the warp yarn flat filament production system and the weft yarn flat filament production system in the flat filament yarn supply production part both adopt a double-layer film package form to supply the yarn from the bottom end, and after the three processes of film cold drafting, split film slitting and hot drying and flat filament hot drafting are sequentially completed on the film material in the flat filament yarn supply production part, the flat filament yarn is supplied from the top end.
The device comprises a flat yarn supply production part, a yarn guide part and a yarn guide part, wherein the flat yarn supply production part is internally provided with a space structure from bottom to top for supplying flat yarn wires from a bottom supply position to a top end;
the first-stage drafting unit comprises a lower drafting roller, a cloth pressing roller, a pressure adjusting device and an upper drafting roller, and the upper drafting roller and the lower drafting roller are synchronously driven by the same motor; the cloth pressing roller can move left and right in parallel along the horizontal direction under the regulation of the pressure regulating device so as to change the wrapping angle of the film raw material and the pressure on the film raw material on the upper drawing roller and the lower drawing roller;
the second-stage drafting unit comprises a lower drafting roller, a cloth pressing roller, a pressure adjusting device, a middle drafting roller, a yarn guide roller and an upper drafting roller, and the lower drafting roller, the middle drafting roller and the upper drafting roller are synchronously driven by the same motor; the cloth pressing roller can move left and right in parallel along the horizontal direction under the regulation of the pressure regulating device so as to change the wrapping angle of the film raw material and the pressure of the flat filament raw material on the centering drawing roller and the lower drawing roller;
the discharging roller is used for placing the polyolefin material film;
the cloth guide roller is used for changing the feeding direction of the film raw material and providing certain transmission damping for the first-stage cold drawing action of the film;
the expanding unit is used for folding, unfolding and expanding the cloth cover of the film raw material;
the splitting and slitting device is used for realizing splitting and shredding of the film raw material;
the heating cabinet adopts electrical heating, and the heating cabinet surface design of hugging closely the flat filament is the arcwall face for eliminate the produced draft stress of first cold draft completely at the heating process, and under the effect of second level draft unit, make the flat filament after cutting hug closely the arc heating cabinet surface in-process that slides, accomplish the hot draft of the second time flat filament of bigger draft ratio on the heating face and draw the process
Optionally, the warp flat filament yarn feeding system and the weft flat filament yarn feeding system both adopt tension fingers to regulate and control the tension of each flat filament yarn, the corresponding components are the warp flat filament tension fingers and the weft flat filament tension fingers respectively, the warp round filament yarn feeding system and the weft round filament yarn feeding system both adopt tension rods to uniformly regulate the tension of the warp round filaments or the weft round filaments, and the corresponding components are the warp round filament tension rods and the weft round filament tension rods respectively.
Optionally, the warp flat yarn breakage detecting device and the weft flat yarn breakage detecting device both adopt a doffing reed mode to detect the yarn breakage condition of each flat yarn, and the warp round yarns and the weft round yarns do not need yarn breakage detecting devices.
The broken yarn detection system in a doffing reed mode comprises a broken yarn detection rack, a diode and a direct current LED alarm indicator lamp;
the broken yarn detection rack comprises an inner conducting strip, an insulating layer, an outer conducting strip and a plurality of doffing reeds with the same number of threads as the flat yarn head;
the inner conducting strip is directly connected with the input cathode of the direct-current power supply through a cable; the outer conducting plate is connected with the cathode of the diode and the cathode of the LED alarm indicator lamp through a cable, the LED alarm indicator lamp is directly connected with the input anode of the direct-current power supply, and the level signal of the anode of the diode is used as an alarm output signal and is connected to the PLC; the PLC comprises program software for filtering the alarm signal so as to avoid false detection of broken yarn.
Optionally, when the first warp yarn guiding comb and the second warp yarn guiding comb are used simultaneously, the round warp yarn feeding system and the flat warp yarn feeding system need to supply yarns simultaneously, wherein the round warp yarn feeding system supplies yarns for the first warp yarn guiding comb, and the flat warp yarn feeding system supplies yarns for the second warp yarn guiding comb; when only one of the first warp guide comb and the second warp guide comb is used, the warp round yarn feeding system or the warp flat yarn feeding system is selected to provide independent yarn supply for the working guide bar.
Optionally, when the first weft yarn guide comb and the second weft yarn guide comb are used simultaneously, the weft flat yarn feeding system supplies yarn simultaneously with the weft round yarn feeding system, wherein the weft flat yarn feeding system supplies yarn for the first weft yarn guide comb, and the weft round yarn feeding system supplies yarn for the second weft yarn guide comb; when the first weft yarn guide comb and the second weft yarn guide comb only use the handle combs, the weft yarn round yarn feeding system or the weft yarn flat yarn feeding system is selected to provide independent yarn supply for the working guide bars.
The invention has the beneficial effects that:
by providing a flat filament and round filament mixed yarn supply system for a warp knitting machine, the combination of a flat filament and round filament integrated yarn supply system and a pan head sectional round filament yarn supply system is realized, so that polyolefin film industrial package materials which are easy to obtain can be directly selected in the production process as the start of the flat filament yarn supply production and supply of the warp knitting machine, production devices such as film cold drafting, split film slitting and hot drying, flat filament hot drafting and the like are integrated and cooperated with conveying devices such as flat filament yarn synchronous transmission, flat filament yarn breakage detection, flat filament single yarn tension compensation and the like, and two sets of symmetrical yarn paths of warp flat filaments and weft knitting flat filaments are provided at the same time, so that a high-integration flat filament yarn supply and production integrated flat filament yarn supply system integrating flat filament single yarn on-line production and yarn supply is formed, the flat filament warp knitting production flow is greatly shortened, and the efficiency of a weaving manufacturer for developing and producing flat filament warp knitting products is improved; in practical application, on the premise of not increasing any extra warping equipment and flow, the mixed yarn supply of polyolefin flat yarn single yarn and high-strength chemical fiber round yarn single yarn is realized, not only can expensive special flat yarn warping equipment and complicated flat yarn warping flow be avoided, the production line length of flat yarn supply is shortened, but also 'one machine can be supplied for multiple times', namely two different weaving raw materials of flat yarn and round yarn can be supplied on one warp knitting machine at the same time, the warp knitting machine is a creative and powerful technical means for saving the cost investment of warp knitting equipment, expanding the variety of warp knitting products, meanwhile, the yarn breakage detection is carried out by adopting a doffing reed mode, the defects of detection failure of transparent flat yarn by utilizing a shading principle, such as infrared detection and laser detection, and the unreliability of detection of a machine vision technology in a vibration environment are overcome, the detection method is simple, the performance is reliable, the detection system is ingenious in design, and the construction is, the application has strong pertinence.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an overall side perspective view of a flat yarn and round yarn combined yarn feeding system for a warp knitting machine according to the present invention;
FIG. 2 is a side perspective view of a main body portion of the warp knitting machine of the present invention;
FIG. 3 is a schematic circuit diagram of a broken yarn detecting system for a flat yarn warp knitting machine;
FIG. 4 is a schematic structural view of a sectional type broken yarn detecting machine frame;
FIG. 5 is a flow chart of a false detection evasion filter logic loop detection;
FIG. 6 is a side perspective view of an integrated double flat yarn stretcher for warp knitting;
FIG. 7 is a front view of the tenter device;
fig. 8 is a front view of the split slitting device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention aims to provide a flat filament and round filament mixed yarn supply system for a warp knitting machine, which realizes short-process mixed yarn supply of a flat filament single yarn and a round filament single yarn on the same warp knitting machine, particularly realizes on-line generation and yarn supply of polyolefin warp knitting flat filaments, and meets the requirement of high-efficiency yarn supply system integration of simultaneous yarn supply and mixed knitting of warp knitting raw materials in various forms on the same warp knitting machine.
The first embodiment is as follows:
the embodiment provides a flat filament and round filament mixed yarn supply system for a warp knitting machine, and the system is shown in figure 1;
the present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.
As shown in figure 1, a flat filament and round filament mixed yarn supply system for a warp knitting machine comprises a main body knitting part 1 and a flat filament yarn supply production part 2 of the warp knitting machine;
the main body knitting part 1 of the warp knitting machine comprises four yarn feeding systems including a warp round yarn feeding system 101, a warp flat yarn feeding system 102, a weft flat yarn feeding system 103 and a weft round yarn feeding system 104;
the flat yarn supply production part 2 comprises a warp flat yarn production system 201 and a weft flat yarn production system 202; the warp knitting machine main body knitting part 1 supplies flat yarn directly by means of a flat yarn supply production part 2 located at the rear position of the machine, wherein a warp flat yarn production system 201 is in butt joint with a warp flat yarn feeding system 102 to supply complete yarn supply of warp flat yarns 3, and a weft flat yarn production system 202 is in butt joint with a weft flat yarn feeding system 103 to supply complete yarn supply of weft flat yarns 4.
As shown in fig. 1, the round warp yarn feeding system 101 is located at the front outer side of the main body knitting part 1 of the warp knitting machine, and along the yarn advancing direction, the round warp yarn path sequentially comprises a round warp yarn feeding warp beam unit 10101, a round warp yarn guide roller 10102, a round warp yarn tension rod 10103, a round warp yarn dividing buckle 10104, and a first warp guide comb 10105; because the single yarn of round silk is mostly the difficult stretch-break of high tenacity chemical fiber monofilament, the round silk of warp yarn system of supplying yarn need not broken yarn detection device, round silk of warp yarn warp beam unit 10101, drive the pan head by a warp beam and adopt the segmentation to send the yarn, the warp beam is by servo motor drive with the active mode fedback, its pan head warping adopts ordinary meridian to compile the yarn warper and accomplish, round silk guide bar 10102 of warp is used for changing the defeated yarn direction of round silk 5 of warp, round silk tension bar 10103 of warp is used for providing unified tension adjustment to round silk 5 of warp, round silk of warp divides the tail end that the knot 10104 is close to round silk of warp yarn system 101, divide silk to arrange round silk of warp 5, appear tying and entangling when avoiding the yarn to get into first round silk guide comb 10105 of warp.
As shown in fig. 1, the circular weft yarn feeding system 104 is located outside the back side of the main body knitting part 1 of the warp knitting machine, and along the yarn advancing direction, the circular weft yarn path sequentially comprises a circular weft yarn feeding warp beam unit 10401, a circular weft yarn guide roller 10402, a circular weft yarn tension rod 10403, a circular weft yarn dividing buckle 10404, and a first weft yarn guide comb 10405; the round yarn single yarn is mostly high-tenacity chemical fiber monofilament and is not easy to break, so a weft round yarn feeding system does not need a yarn breaking detection device, a weft round yarn feeding warp shaft unit 10401 drives a pan head by a warp shaft to feed yarns in a segmented mode, the warp shaft is driven by a servo motor to feed yarns in an active mode, the pan head warping is completed by a common warp knitting yarn warping machine, a weft round yarn guide rod 10102 is used for changing the yarn feeding direction of a weft round yarn 6, a weft round yarn tension rod 10403 is used for providing uniform tension adjustment for the weft round yarn 6, a weft round yarn splitting buckle 10104 is close to the tail end of the weft round yarn feeding system 104 to perform yarn splitting arrangement on the weft round yarn 6, and knotting and entanglement are avoided when the yarns enter a first weft yarn guide comb 10405.
As shown in fig. 2, the warp flat yarn feeding system 102 is located on the front inner side of the knitting portion 1 of the main body of the single bed warp knitting machine, and the yarn path of the warp flat yarn 3 includes a warp flat yarn breakage detecting device 10201, a warp flat yarn feeding warp beam unit 10202, a warp flat yarn guide roller 10203, a warp flat yarn tension finger 10204, a warp flat yarn dividing buckle 10205, and a second warp guide comb 10206 in this order along the yarn advancing direction. The warp flat yarn broken yarn detection device 10201 is used for detecting broken yarns of each warp flat yarn 3; the warp flat yarn feeding warp beam unit 10202 consists of a group of three roller rollers with the same diameter, is driven by the same servo motor, feeds yarns in an active mode, and is in transmission operation with a warp flat yarn production system 201 in a flat yarn supply production part 2 according to the yarn supply linear speed 1: 1; the warp flat yarn guide roller 10203 is used for changing the yarn path advancing direction of the warp flat yarn 3; the warp flat filament tension finger 10204 regulates and controls the tension of each flat filament yarn so as to make up the yarn consumption difference of a single flat filament; the warp flat filament yarn dividing buckle 10205 is located at the tail end of the whole warp flat filament 3 yarn path, is close to the second warp guide comb 10206, provides clear and tidy flat filament single yarn separation for the second warp guide comb 10206, and prevents the warp flat filament 3 from being entangled or adhered when entering the second warp guide comb 10206 for weaving.
As shown in fig. 2, the weft tape yarn feeding system 103 is located inside the rear side of the machine of the main body knitting portion 1 of the single-bed warp knitting machine, and the yarn path of the weft tape yarn 4 includes, in order along the yarn advancing direction, a weft tape yarn breakage detecting device 10301, a weft tape yarn feeding warp shaft unit 10302, a weft tape yarn guide roller 10303, a weft tape yarn tension finger 10304, a weft tape yarn dividing buckle 10305, and a first weft yarn guide comb 10306. The weft yarn flat filament broken yarn detection device 10301 detects broken yarns of each weft yarn flat filament 4; the weft yarn feeding warp beam unit 10302 is composed of a group of three roller rollers with the same diameter, is driven by the same servo motor, feeds yarns in an active mode, and is driven to operate with a weft yarn flat filament production system 202 in the flat filament yarn supply production part 2 according to the yarn supply linear speed 1: 1; the weft yarn flat filament guide roller 10303 is used for changing the yarn path advancing direction of the weft yarn flat filament 4; the weft yarn flat filament tension finger 10304 regulates and controls the tension of each flat filament yarn so as to make up for the yarn consumption difference of a single flat filament; the weft yarn dividing buckle 10305 is located at the tail end of the whole weft yarn flat filament 4 yarn path and is close to the weft yarn flat filament guide comb 10306, so that clear and tidy flat filament single yarn separation is provided for the weft yarn flat filament guide comb 10306, and the weft yarn flat filament 4 is prevented from being entangled or adhered when entering the first weft yarn guide comb 10306 for weaving.
As shown in fig. 1, the warp yarn and flat yarn production systems 201 and 202 in the flat yarn supply and production section 2 are supplied from the bottom in the form of a double-layer film package of polyolefin material, and the flat yarn is supplied from the top after the three steps of film cold drawing, split film slitting and hot drying, and flat yarn hot drawing are sequentially performed in the flat yarn supply and production section 2.
As shown in fig. 2, the warp flat filament yarn feeding system 102 and the weft flat filament yarn feeding system 103 both use tension fingers to adjust and control the tension of each flat filament yarn of the warp flat filament 3 or the weft flat filament 4, and their corresponding components are warp flat filament tension fingers 10204 and weft flat filament tension fingers 10304, respectively, while the warp round filament yarn feeding system 101 and the weft round filament yarn feeding system 104 both use tension rods to uniformly adjust the tension of the warp round filament 5 or the weft round filament 6, and their corresponding components are warp round filament tension rods 10103 and weft round filament tension rods 10403, respectively.
As shown in fig. 1, when the first warp guide comb 10105 and the second warp guide comb 10206 are used simultaneously, the warp round yarn feeding system 101 and the warp flat yarn feeding system 102 need to supply yarns simultaneously, and the operation mode is as follows: the warp round yarn feeding system 101 can only supply yarns for the first warp guide comb 10105, and the warp flat yarn feeding system 102 can only supply yarns for the second warp guide comb 10206; when only one of the first warp guide comb 10105 and the second warp guide comb 10206 is used, the working mode is as follows: any one of the warp yarn round yarn feeding system 101 and the warp yarn flat yarn feeding system 102 can be selected to provide independent yarn supply for the working guide bar according to the process requirement.
As shown in fig. 1, when the first weft guide comb 10306 and the second weft guide comb 10405 are used simultaneously, the weft flat yarn feeding system 103 and the weft round yarn feeding system 104 feed yarns simultaneously, and the operation mode is: the weft yarn flat yarn feeding system 103 can only supply yarns for the first weft yarn guide comb 10306, and the weft yarn round yarn feeding system 104 can only supply yarns for the second weft yarn guide comb 10405; when only one of the first weft guide bar 10306 and the second weft guide bar 10405 is used, either one of the weft round yarn feeding system 103 and the weft flat yarn feeding system 104 can be selected to provide independent yarn supply for the working guide bar according to the process requirement.
The invention provides a flat filament and round filament mixed yarn supply system for a warp knitting machine, which realizes the combination of a flat filament and round filament mixed yarn supply system for producing and supplying integrated flat filaments and a pan head sectional round filament yarn supply system, so that polyolefin film industrial package materials which are easy to obtain can be directly selected in the production process as the start of flat filament yarn supply production and supply of the warp knitting machine, production devices such as film cold drafting, split film slitting and hot drying, flat filament hot drafting and the like are integrated and cooperated with conveying devices such as flat filament yarn synchronous transmission, flat filament yarn breakage detection, flat filament single yarn tension compensation and the like, two sets of symmetrical yarn paths of warp flat filaments and weft knitting flat filaments are provided at the same time, a high-integration level flat filament yarn supply and production integrated flat filament yarn supply system integrating flat filament single yarn on-line production and yarn supply is formed, the flat filament warp knitting production flow is greatly shortened, and the efficiency of a weaving manufacturer on the development and production of flat filament warp knitting products is improved; in practical application, on the premise of not increasing any extra warping equipment and process, the mixed yarn supply of the polyolefin flat yarn single yarn and the high-strength chemical fiber round yarn single yarn is realized, not only can expensive special flat yarn warping equipment and complicated flat yarn warping process be avoided, the production line length of the flat yarn supply is shortened, but also 'one machine can be supplied for multiple times', namely two different knitting raw materials of the flat yarn and the round yarn can be supplied on one warp knitting machine at the same time, and the warp knitting machine is a powerful technical means for saving the cost investment of the warp knitting equipment and expanding the variety of warp knitting products.
Example two
The embodiment provides a flat filament and round filament mixed yarn supply system for a warp knitting machine, and the system is shown in figure 1;
the present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.
As shown in figure 1, a flat filament and round filament mixed yarn supply system for a warp knitting machine comprises a main body knitting part 1 and a flat filament yarn supply production part 2 of the warp knitting machine;
the main body knitting part 1 of the warp knitting machine comprises four yarn feeding systems including a warp round yarn feeding system 101, a warp flat yarn feeding system 102, a weft flat yarn feeding system 103 and a weft round yarn feeding system 104;
the flat yarn supply production part 2 comprises a warp flat yarn production system 201 and a weft flat yarn production system 202; the warp knitting machine main body knitting part 1 supplies flat yarn directly by means of a flat yarn supply production part 2 located at the rear position of the machine, wherein a warp flat yarn production system 201 is in butt joint with a warp flat yarn feeding system 102 to supply complete yarn supply of warp flat yarns 3, and a weft flat yarn production system 202 is in butt joint with a weft flat yarn feeding system 103 to supply complete yarn supply of weft flat yarns 4.
As shown in fig. 1, the round warp yarn feeding system 101 is located at the front outer side of the main body knitting part 1 of the warp knitting machine, and along the yarn advancing direction, the round warp yarn path sequentially comprises a round warp yarn feeding warp beam unit 10101, a round warp yarn guide roller 10102, a round warp yarn tension rod 10103, a round warp yarn dividing buckle 10104, and a first warp guide comb 10105; because the single yarn of round silk is mostly the difficult stretch-break of high tenacity chemical fiber monofilament, the round silk of warp yarn system of supplying yarn need not broken yarn detection device, round silk of warp yarn warp beam unit 10101, drive the pan head by a warp beam and adopt the segmentation to send the yarn, the warp beam is by servo motor drive with the active mode fedback, its pan head warping adopts ordinary meridian to compile the yarn warper and accomplish, round silk guide bar 10102 of warp is used for changing the defeated yarn direction of round silk 5 of warp, round silk tension bar 10103 of warp is used for providing unified tension adjustment to round silk 5 of warp, round silk of warp divides the tail end that the knot 10104 is close to round silk of warp yarn system 101, divide silk to arrange round silk of warp 5, appear tying and entangling when avoiding the yarn to get into first round silk guide comb 10105 of warp.
As shown in fig. 1, the circular weft yarn feeding system 104 is located outside the back side of the main body knitting part 1 of the warp knitting machine, and along the yarn advancing direction, the circular weft yarn path sequentially comprises a circular weft yarn feeding warp beam unit 10401, a circular weft yarn guide roller 10402, a circular weft yarn tension rod 10403, a circular weft yarn dividing buckle 10404, and a first weft yarn guide comb 10405; the round yarn single yarn is mostly high-tenacity chemical fiber monofilament and is not easy to break, so a weft round yarn feeding system does not need a yarn breaking detection device, a weft round yarn feeding warp shaft unit 10401 drives a pan head by a warp shaft to feed yarns in a segmented mode, the warp shaft is driven by a servo motor to feed yarns in an active mode, the pan head warping is completed by a common warp knitting yarn warping machine, a weft round yarn guide rod 10102 is used for changing the yarn feeding direction of a weft round yarn 6, a weft round yarn tension rod 10403 is used for providing uniform tension adjustment for the weft round yarn 6, a weft round yarn splitting buckle 10104 is close to the tail end of the weft round yarn feeding system 104 to perform yarn splitting arrangement on the weft round yarn 6, and knotting and entanglement are avoided when the yarns enter a first weft yarn guide comb 10405.
As shown in fig. 2, the warp flat yarn feeding system 102 is located on the front inner side of the knitting portion 1 of the main body of the single bed warp knitting machine, and the yarn path of the warp flat yarn 3 includes a warp flat yarn breakage detecting device 10201, a warp flat yarn feeding warp beam unit 10202, a warp flat yarn guide roller 10203, a warp flat yarn tension finger 10204, a warp flat yarn dividing buckle 10205, and a second warp guide comb 10206 in this order along the yarn advancing direction. The warp flat filament broken yarn detection device 10201 detects broken yarns of each flat filament yarn 3, and due to the transparent particularity of the flat filaments, the warp flat filament broken yarn detection device 10201 detects the broken yarn condition of each flat filament yarn by adopting a falling mode of a doffing reed depending on gravity;
the detailed detection principle is as follows:
as shown in fig. 3 and 4, the inner conductive sheet 3002, the insulating layer 3003, the outer conductive sheet 3004 and the flat filament of the warp knitting yarn on all the sectional type detection frames 301 pass through the elongated slot of the falling yarn reed 3001, when the tension of the flat filament can meet the normal operation of the warp knitting machine, the falling yarn reed 3001 is pulled up and suspended by the flat filament, the inner conductive sheet 3002 and the outer conductive sheet 3004 are broken due to the partition of the insulating layer 3003, the negative electrode of the diode 4001 on the corresponding sectional type broken yarn detection circuit 401 is at a high level, no current flows through the diode 4001, the positive electrode thereof is at a high level, the LED alarm indicator lamp 4002 is turned off, and the alarm output signal 403 is not output; when the flat yarn is broken or the tension is not enough to support the normal work of the warp knitting machine, the doffing reed 3001 falls on the inner conducting plate 3002 due to the action of gravity, the inner conducting plate 3002 is communicated with the outer conducting plate 3004 due to the fact that the doffing reed 3001 is a steel conductor to cause short circuit, the negative electrode of the diode 4001 connected with the outer conducting plate 3004 and the negative electrode of the LED alarm indicator lamp 4002 are both at a low level, therefore, the LED alarm indicator lamp 4002 is lightened, current flows through the diode 4001, the positive electrode of the diode 4001 jumps from the high level to the low level, and the alarm output signal 403 outputs a low-level alarm signal. Although only the anode of the diode 4001 of the sectional broken yarn detection circuit 401 is at a low level in the broken yarn detection system on the whole yarn path, and the anodes of the diodes 4001 of the other sectional broken yarn detection circuits 401 connected together are also pulled down to a low level, since no alarm is detected on the other sectional broken yarn detection circuits 401, the cathodes of the diodes 4001 of the other sectional broken yarn detection circuits 401 are at a high level, and it can be known by the unidirectional conductivity of the diodes that no current flows through the diodes 4001 of the other sectional broken yarn detection circuits 401, so that the LED alarm indicator lamps 4002 of the other sectional broken yarn detection circuits 401 remain in an off state. As shown in fig. 3, after receiving a falling edge of an alarm signal (the alarm level is a low level) input by the alarm output signal 403 on a certain yarn path, the PLC controller 8 sets a flag bit to record the arrival time of the alarm level, and starts to time T1 when the alarm signal level is continuously kept at the low level, the timing length T1 can be manually set and changed according to the vibration condition of the machine on the production site, when the timing length T1 is reached, it can be determined that a true flat filament yarn breakage fault occurs, and the PLC controller 8 stops the machine and gives a yarn breakage alarm message; if the level input by the alarm output signal 403 jumps to a high level during the time length T1 which is not reached, the arrival zone bit of the alarm level is immediately cancelled, and the timing is stopped and cleared, the occurrence of the alarm signal is considered to be false triggering caused by the tension fluctuation of the flat filament yarn due to some reasons such as machine vibration, the PLC 8 does not output yarn-breaking alarm information and continues to maintain the machine to run, and the program software is used for simulating the filtering effect of the yarn-breaking alarm signal to avoid false yarn-breaking detection.
The warp flat yarn feeding warp beam unit 10202 consists of a group of three roller rollers with the same diameter, is driven by the same servo motor, feeds yarns in an active mode, and is in transmission operation with a warp flat yarn production system 201 in a flat yarn supply production part 2 according to the yarn supply linear speed 1: 1; the warp flat yarn guide roller 10203 is used for changing the yarn path advancing direction of the warp flat yarn 3; the warp flat filament tension finger 10204 regulates and controls the tension of each flat filament yarn so as to make up the yarn consumption difference of a single flat filament; the warp flat filament yarn dividing buckle 10205 is located at the tail end of the whole warp flat filament 3 yarn path, is close to the second warp guide comb 10206, provides clear and tidy flat filament single yarn separation for the second warp guide comb 10206, and prevents the warp flat filament 3 from being entangled or adhered when entering the second warp guide comb 10206 for weaving.
As shown in fig. 2, the weft tape yarn feeding system 103 is located inside the rear side of the machine of the main body knitting portion 1 of the single-bed warp knitting machine, and the yarn path of the weft tape yarn 4 includes, in order along the yarn advancing direction, a weft tape yarn breakage detecting device 10301, a weft tape yarn feeding warp shaft unit 10302, a weft tape yarn guide roller 10303, a weft tape yarn tension finger 10304, a weft tape yarn dividing buckle 10305, and a first weft yarn guide comb 10306. The weft yarn flat filament broken yarn detection device 10301 detects broken yarns of each weft yarn flat filament 4, and due to the transparent particularity of the flat filaments, the weft yarn flat filament broken yarn detection device 10301 detects the broken yarn condition of each flat filament yarn in a falling mode of a doffing reed depending on gravity, and the detailed detection principle is as above.
The weft yarn feeding warp beam unit 10302 is composed of a group of three roller rollers with the same diameter, is driven by the same servo motor, feeds yarns in an active mode, and is driven to operate with a weft yarn flat filament production system 202 in the flat filament yarn supply production part 2 according to the yarn supply linear speed 1: 1; the weft yarn flat filament guide roller 10303 is used for changing the yarn path advancing direction of the weft yarn flat filament 4; the weft yarn flat filament tension finger 10304 regulates and controls the tension of each flat filament yarn so as to make up for the yarn consumption difference of a single flat filament; the weft yarn dividing buckle 10305 is located at the tail end of the whole weft yarn flat filament 4 yarn path and is close to the weft yarn flat filament guide comb 10306, so that clear and tidy flat filament single yarn separation is provided for the weft yarn flat filament guide comb 10306, and the weft yarn flat filament 4 is prevented from being entangled or adhered when entering the first weft yarn guide comb 10306 for weaving.
As shown in fig. 1, the warp yarn flat yarn production system 201 and the weft yarn flat yarn production system 202 in the flat yarn supply production section 2 are supplied from the bottom end in a double-layer film package of polyolefin material, and the flat yarn is supplied from the top end after the film material is sequentially subjected to three processes of film cold drawing, split film slitting and hot drying and flat yarn hot drawing in the flat yarn supply production section 2;
the detailed mechanism principle and the working process of each component in the warp flat filament production system 201 and the weft flat filament production system 202 are completely the same, and for convenience of description, the mechanism and the working principle of the weft flat filament production system 202 are taken as an example for explanation, and the details are as follows:
as shown in fig. 6, the weft yarn flat yarn production system 202 in the flat yarn supply production part 2 sequentially comprises a feeding roller 501, a cloth guide roller 502, an expanding unit 503, a first-stage drafting unit 504, a split film slitting device 505, a heating box 506 and a second-stage drafting unit 507 in a bottom-to-top spatial structure in which a flat yarn wire is supplied from a bottom supply position to a top end;
the discharging roller 501 is used for placing a polyolefin material film;
the cloth guide roller 502 is used for changing the feeding direction of the film raw material and providing certain transmission damping for the first-stage cold drawing action of the film;
the expanding unit 503 is used for folding, unfolding and expanding the cloth cover of the film raw material;
the split film slitting device 505 is used for realizing the slitting and shredding of the film raw material;
the heating box 506 is electrically heated, the surface of the heating box clinging to the flat filament is designed into an arc-shaped surface, the heating box is used for completely eliminating the drafting stress generated by the first cold drafting in the heating process, and under the action of the second-stage drafting unit 507, the cut flat filament is subjected to second flat filament hot drafting with larger drafting ratio on the heating surface in the process of clinging to the surface of the arc-shaped heating box to slide;
in the weft yarn flat yarn supply system positioned on the left side in the flat yarn supply production part, a weft yarn film raw material is passively unreeled by a weft yarn unreeling roller 501 and then passes through a pair of weft yarn cloth guide rollers 502 which are arranged in parallel backwards and upwards, the two weft yarn cloth guide rollers 502 are a pair of guide rollers with the same diameter and are arranged above the weft yarn unreeling roller 501 obliquely, and a weft yarn expanding unit 503 is arranged right below the weft yarn expanding unit and used for changing the feeding direction of the weft yarn film raw material and providing certain transmission damping for the first-stage cold drafting action of the weft yarn film.
The weft film material passes through the weft guide roller 502 of the station assembly and then enters the weft widening unit 503 of the next station assembly.
As shown in fig. 7, the weft yarn expanding unit 503 has an arcuate structure including an arcuate chord 50301 and an arcuate back 50302. The weft yarn expanding unit 503 is located right above the weft yarn cloth guide roller 502 and below the weft yarn first-stage drafting unit 504, weft yarn film raw materials are led in from the upper part of the bow rod 50301 and are drawn out from the lower part of the bow rod 50302, and the weft yarn expanding unit has the function of expanding and expanding the cloth cover wrinkles of the weft yarn film raw materials by using the pressure of the bow rod 50302, so that the wrinkles and the overlapping of the weft yarn film raw materials when the weft yarn film raw materials enter the next station, namely the weft yarn first-stage drafting unit 504 are avoided, and the error rate of the subsequent process is reduced.
The raw material of the weft film enters the weft first-stage drafting unit 504 of the next station component after passing through the weft expanding unit 503 of the station component.
As shown in fig. 6, the first stage drawing unit 504 of the weft yarn includes four components, namely a first stage lower drawing roller 50401 of the weft yarn, a first stage cloth pressing roller 50402 of the weft yarn, a first stage pressure adjusting device 50403 of the weft yarn and a first stage upper drawing roller 50404 of the weft yarn, wherein the first stage lower drawing roller 50401 of the weft yarn and the first stage upper drawing roller 50404 of the weft yarn are synchronously driven by the same motor, the first stage cloth pressing roller 50402 of the weft yarn can move in parallel along the horizontal direction under the adjustment of the first stage pressure adjusting device 50403 of the weft yarn, the wrapping angle of the film material of the weft yarn can be changed, and the pressure of the film material on the first stage lower drawing roller 50401 of the weft yarn and the first stage upper drawing roller 50404 of the weft yarn can be changed, the first stage cold drawing of the weft yarn film material with a small drawing ratio relative to the discharge roller 501 of the weft yarn.
The raw material of the weft film enters a weft splitting and slitting unit 505 of the next station component after passing through a weft first-stage drafting unit 504 of the station component.
As shown in fig. 6 and 8, the section of the weft splitting and slitting device 505 is a semicircular beam, slitting blades are vertically installed on the plane of the beam, the weft splitting and slitting device 505 is located between the weft first-stage drafting unit 504 and the weft heating box 506 to split and slit the weft film raw material, and cut the whole film raw material into a specified number of narrow flat filaments to reduce the partial drafting stress of the weft first-stage drafting unit 504 on the film raw material due to the first cold drafting, and the number of blades determines the number of head threads of the slit.
The weft yarn flat filament raw material enters a weft yarn heating box 506 of the next station component after passing through a weft yarn splitting and cutting device 505 of the station component.
The weft yarn heating box 506 is electrically heated, the surface of the heating box tightly attached to the flat yarn is designed to be an arc-shaped surface, the flat yarn is guaranteed to be well attached and continuously heated in the whole process when running on the heating surface, and the maximum working temperature can reach 150 ℃ depending on the material of the flat yarn; the weft heating box 506 is located between the weft first-stage drafting unit 505 and the weft second-stage drafting unit 507 and behind the weft splitting and cutting device 504, and has the function of completely eliminating the drafting stress generated by the first cold drafting in the heating process, and under the action of the weft second-stage drafting unit 507, the cut flat filament is subjected to the second flat filament hot drafting with a larger drafting ratio on the heating surface in the process of sliding close to the surface of the arc heating box.
The weft yarn flat filament raw material enters a weft yarn second-stage drafting unit 507 of the next station component after passing through a weft yarn heating box 506 of the station component.
As shown in fig. 6, the second stage drawing unit 507 includes six assemblies of a second stage lower drawing roller 50701, a second stage pressing roller 50702, a second stage pressure adjusting device 50703, a middle drawing roller 50704, a yarn guide roller 50705 and a second stage upper drawing roller 50706, wherein the second stage lower drawing roller 50701, the middle drawing roller 50704 and the second stage upper drawing roller 50706 are synchronously driven by a same motor, the second stage pressing roller 50702 is horizontally movable in parallel under the adjustment of the second stage pressure adjusting device 50703, the wrapping angle of the tape yarn raw material can be changed, the pressure of the tape raw material on the middle drawing roller 50704 and the second stage lower drawing roller 50701 is centered, the yarn guide roller 50705 is used for changing the tape yarn transmission direction between the middle drawing roller 50705 and the second stage upper drawing roller 50706, the damping of the second stage drawing unit 507 relative to the first stage drawing unit 504 of the weft yarn is increased, and the thermal drawing of the tape 704 with a larger ratio is more favorably realized, in addition, the transmission distance of the flat filament in the weft yarn second-stage drafting unit 507 is increased, which is beneficial to the uniformity and the elimination of the heat drafting stress in the drafting unit during transmission.
The weft yarn flat filament raw material forms flat filament yarn for being knitted by the warp knitting machine after passing through the weft yarn second-stage drafting unit 507, and the flat filament yarn is rotated by the weft yarn second-stage upper drafting roller 50706 and supplied to the warp knitting machine for use.
The warp yarn flat raw material is passed through the warp second-stage drawing unit 607 to form a flat yarn for knitting by the warp knitting machine, and after being output by the warp second-stage upper drawing roller, the warp yarn flat raw material is supplied to the warp knitting machine after changing the conveying direction of the warp yarn flat by the warp yarn take-off godet roller 608.
As shown in fig. 2, the warp flat filament yarn feeding system 102 and the weft flat filament yarn feeding system 103 both use tension fingers to adjust and control the tension of each flat filament yarn of the warp flat filament 3 or the weft flat filament 4, and their corresponding components are warp flat filament tension fingers 10204 and weft flat filament tension fingers 10304, respectively, while the warp round filament yarn feeding system 101 and the weft round filament yarn feeding system 104 both use tension rods to uniformly adjust the tension of the warp round filament 5 or the weft round filament 6, and their corresponding components are warp round filament tension rods 10103 and weft round filament tension rods 10403, respectively.
As shown in fig. 1, when the first warp guide comb 10105 and the second warp guide comb 10206 are used simultaneously, the warp round yarn feeding system 101 and the warp flat yarn feeding system 102 need to supply yarns simultaneously, and the operation mode is as follows: the warp round yarn feeding system 101 can only supply yarns for the first warp guide comb 10105, and the warp flat yarn feeding system 102 can only supply yarns for the second warp guide comb 10206; when only one of the first warp guide comb 10105 and the second warp guide comb 10206 is used, the working mode is as follows: any one of the warp yarn round yarn feeding system 101 and the warp yarn flat yarn feeding system 102 can be selected to provide independent yarn supply for the working guide bar according to the process requirement.
As shown in fig. 1, when the first weft guide comb 10306 and the second weft guide comb 10405 are used simultaneously, the weft flat yarn feeding system 103 and the weft round yarn feeding system 104 feed yarns simultaneously, and the operation mode is: the weft yarn flat yarn feeding system 103 can only supply yarns for the first weft yarn guide comb 10306, and the weft yarn round yarn feeding system 104 can only supply yarns for the second weft yarn guide comb 10405; when only one of the first weft guide bar 10306 and the second weft guide bar 10405 is used, either one of the weft round yarn feeding system 103 and the weft flat yarn feeding system 104 can be selected to provide independent yarn supply for the working guide bar according to the process requirement.
By providing a flat filament and round filament mixed yarn supply system for a warp knitting machine, the combination of a flat filament and round filament integrated yarn supply system and a pan head sectional round filament yarn supply system is realized, so that polyolefin film industrial package materials which are easy to obtain can be directly selected in the production process as the start of the flat filament yarn supply production and supply of the warp knitting machine, production devices such as film cold drafting, split film slitting and hot drying, flat filament hot drafting and the like are integrated and cooperated with conveying devices such as flat filament yarn synchronous transmission, flat filament yarn breakage detection, flat filament single yarn tension compensation and the like, and two sets of symmetrical yarn paths of warp flat filaments and weft knitting flat filaments are provided at the same time, so that a high-integration flat filament yarn supply and production integrated flat filament yarn supply system integrating flat filament single yarn on-line production and yarn supply is formed, the flat filament warp knitting production flow is greatly shortened, and the efficiency of a weaving manufacturer for developing and producing flat filament warp knitting products is improved; in practical application, on the premise of not increasing any extra warping equipment and flow, the mixed yarn supply of polyolefin flat yarn single yarn and high-strength chemical fiber round yarn single yarn is realized, not only can expensive special flat yarn warping equipment and complicated flat yarn warping flow be avoided, the production line length of flat yarn supply is shortened, but also 'one machine can be supplied for multiple times', namely two different weaving raw materials of flat yarn and round yarn can be supplied on one warp knitting machine at the same time, the warp knitting machine is a creative and powerful technical means for saving the cost investment of warp knitting equipment, expanding the variety of warp knitting products, meanwhile, the yarn breakage detection is carried out by adopting a doffing reed mode, the defects of detection failure of transparent flat yarn by utilizing a shading principle, such as infrared detection and laser detection, and the unreliability of detection of a machine vision technology in a vibration environment are overcome, the detection method is simple, the performance is reliable, the detection system is ingenious in design, and the construction is, the application has strong pertinence.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A flat filament and round filament mixed yarn supply system for a warp knitting machine is characterized by comprising a warp knitting machine main body knitting part and a flat filament yarn supply production part;
the main body weaving part of the warp knitting machine comprises a warp round wire yarn feeding system, a warp flat wire yarn feeding system, a weft flat wire yarn feeding system and a weft round wire yarn feeding system; the flat yarn supply production part comprises a warp flat yarn production system and a weft flat yarn production system; the warp knitting machine main body knitting part is provided with flat yarn feeding production parts for supplying flat yarns directly, wherein a warp flat yarn production system is in butt joint with a warp flat yarn feeding system for supplying yarns, and a weft flat yarn production system is in butt joint with a weft flat yarn feeding system for supplying yarns;
the warp yarn flat filament production system and the weft yarn flat filament production system in the flat filament yarn supply production part both adopt a double-layer film package form to supply materials from the bottom end, and after three processes of film cold drafting, film splitting, cutting, hot drying and flat filament hot drafting are sequentially completed on a film material in the flat filament yarn supply production part, flat filament yarns are supplied from the top end.
2. The yarn supply system according to claim 1, wherein the warp round yarn feeding system is positioned outside the front side of the main body knitting part of the warp knitting machine, and the warp round yarn path sequentially comprises a warp round yarn feeding warp beam unit, a warp round yarn guide roller, a warp round yarn tension rod, a warp round yarn dividing buckle and a first warp guide comb along the yarn advancing direction;
the weft round filament yarn feeding system is positioned on the outer side of the rear side of the main body weaving part of the warp knitting machine, and along the yarn advancing direction, the weft round filament yarn path sequentially comprises a weft round filament yarn feeding warp beam unit, a weft round filament guide roller, a weft round filament tension rod, a weft round filament yarn dividing buckle and a second weft yarn guide comb.
3. The yarn supply system according to claim 2, wherein the warp flat yarn feeding system is located inside the front side of the main body knitting part of the warp knitting machine, and the warp flat yarn path sequentially comprises a warp flat yarn breakage detection device, a warp flat yarn feeding warp beam unit, a warp flat yarn guide roller, a warp flat yarn tension finger, a warp flat yarn dividing buckle and a second warp guide comb along the yarn advancing direction;
the weft yarn flat filament yarn feeding system is positioned on the inner side of the rear side of a main body weaving part machine of the warp knitting machine and along the yarn advancing direction, and a weft yarn flat filament yarn path sequentially comprises a weft yarn flat filament yarn breakage detection device, a weft yarn flat filament yarn feeding warp beam unit, a weft yarn flat filament guide roller, a weft yarn flat filament tension finger, a weft yarn flat filament yarn dividing buckle and a first weft yarn guide comb.
4. The yarn supply system according to claim 3, wherein the warp flat yarn feeding warp beam unit and the weft flat yarn feeding warp beam unit are respectively composed of a group of three roller rollers with the same diameter, are driven by the same servo motor, and are used for feeding yarns in an active mode, and are respectively driven to operate with the warp flat yarn production system and the weft flat yarn production system in the flat yarn supply production part according to the yarn supply linear speed of 1: 1.
5. The yarn supply system according to claim 2, wherein the warp yarn round yarn feeding warp beam unit and the weft yarn round yarn feeding warp beam unit are respectively driven by a warp beam to drive the pan head to feed yarns in a segmented mode, and the warp beams are driven by a servo motor to feed yarns in an active mode.
6. The yarn supply system according to claim 1, wherein the bottom-up space structure for supplying the flat filament yarn from the bottom supply position to the top in the flat filament yarn supply production part comprises a feeding roller, a cloth guide roller, an expanding unit, a first-stage drafting unit, a split film cutting device, a heating box and a second-stage drafting unit in sequence.
7. The yarn supply system of claim 1, wherein the warp flat yarn feeding system and the weft flat yarn feeding system both use tension fingers to adjust the tension of each flat yarn, and their corresponding components are warp flat yarn tension fingers and weft flat yarn tension fingers, respectively, and the warp round yarn feeding system and the weft round yarn feeding system both use tension rods to uniformly adjust the tension of the warp round yarn or the weft round yarn, and their corresponding components are warp round yarn tension rods and weft round yarn tension rods, respectively.
8. The yarn supply system according to claim 3, wherein the warp yarn breakage detecting device and the weft yarn breakage detecting device both detect the yarn breakage of each flat yarn by adopting a doffing reed mode, and the yarn breakage detecting device is not needed for the round warp yarn and the round weft yarn.
9. The yarn supply system of claim 3, wherein when the first warp guide comb and the second warp guide comb are used simultaneously, the warp round yarn feeding system and the warp flat yarn feeding system need to supply yarns simultaneously, wherein the warp round yarn feeding system supplies yarns for the first warp guide comb and the warp flat yarn feeding system supplies yarns for the second warp guide comb; when only one of the first warp guide comb and the second warp guide comb is used, the warp round yarn feeding system or the warp flat yarn feeding system is selected to provide independent yarn supply for the working guide bar.
10. The yarn supply system of claim 3, wherein when the first weft guide comb and the second weft guide comb are used simultaneously, the weft tape yarn feed system supplies yarn simultaneously with the weft round yarn feed system, wherein the weft tape yarn feed system supplies yarn for the first weft guide comb and the weft round yarn feed system supplies yarn for the second weft guide comb; when only one of the first weft yarn guide comb and the second weft yarn guide comb is used, the weft yarn round yarn feeding system or the weft yarn flat yarn feeding system is selected to provide independent yarn supply for the working guide bar.
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| CN2389904Y (en) * | 1999-07-30 | 2000-08-02 | 武进市五洋纺织机械有限公司 | Positive let-off mechanism for single neele bed warp knitting machine |
| CN101476210B (en) * | 2009-01-20 | 2010-12-01 | 常州市润源经编机械有限公司 | Warp let-off device of double rib warp loom |
| CN202359312U (en) * | 2011-11-25 | 2012-08-01 | 浙江同辉纺织股份有限公司 | Twill ultrasoft velvet fabric |
| CN204384531U (en) * | 2015-01-06 | 2015-06-10 | 郑州宝蓝包装技术有限公司 | A kind of film splitter |
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| CN105463689B (en) * | 2015-12-25 | 2018-10-16 | 江南大学 | The adjustable tension compensating mechanism of warp knit |
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