CN111851042A - Fabric weft straightening or pattern straightening mechanism and method - Google Patents
Fabric weft straightening or pattern straightening mechanism and method Download PDFInfo
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- CN111851042A CN111851042A CN202010855732.4A CN202010855732A CN111851042A CN 111851042 A CN111851042 A CN 111851042A CN 202010855732 A CN202010855732 A CN 202010855732A CN 111851042 A CN111851042 A CN 111851042A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H3/00—Inspecting textile materials
- D06H3/12—Detecting or automatically correcting errors in the position of weft threads in woven fabrics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
- D06C3/06—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by rotary disc, roller, or like apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
- G01N21/898—Irregularities in textured or patterned surfaces, e.g. textiles, wood
- G01N21/8983—Irregularities in textured or patterned surfaces, e.g. textiles, wood for testing textile webs, i.e. woven material
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Abstract
The invention discloses a fabric weft straightening or weft straightening and pattern straightening mechanism and a method, wherein the fabric weft straightening or weft straightening and pattern straightening mechanism comprises a correcting mechanism, a detecting mechanism and a central processing unit; the correcting mechanism comprises a first expanding roller (1) and a second expanding roller (2), the first expanding roller (1) is driven by a first motor (3), the second expanding roller (2) is driven by a second motor (4), the first expanding roller (1) is arranged on one side of the fabric in the width direction, the second expanding roller (2) is arranged on the other side of the fabric in the width direction, the detecting mechanism is arranged in the front and/or the rear of the correcting mechanism along the running route of the fabric, and the first motor (3), the second motor (4) and the detecting mechanism are controlled by a central processing unit. The invention has simple structure, low use cost, no damage to the fabric during correction, quick correction response, real-time correction control, high correction precision, good effect and wide range of applicable textile types.
Description
Technical Field
The invention relates to a mechanism and a method for correcting skewness, skew and bending of patterns of a fabric, in particular to a mechanism and a method for weft straightening or weft straightening and pattern straightening of the fabric, and belongs to the technical field of textile equipment and processes.
Background
The skew is a skew state in which the weft or knitted course deviates from a straight line perpendicular to the fabric warp or wale, and the bow (hook) is a skew state in which the weft or knitted course deviates from a straight line perpendicular to the fabric warp or wale, forming one or more arcs in the fabric width direction. The weft yarn in the invention refers to a weft yarn of a woven fabric or a course of a knitted fabric.
The shuttle fabric is formed by interweaving warp yarns and weft yarns which are vertical to each other and are interwoven in a 90-degree angle, the longitudinal yarns are called warp yarns, the transverse yarns are called weft yarns, and in most cases, the weft yarns slide and deviate from a skew state formed by being vertical to the warp yarns of the fabric and are called weft skew. The weft yarn bending deflection correction of the woven fabric is to enable each weft yarn of the weft deflection to be deviated from a state vertical to warp yarns through the mechanical action of the existing weft straightening device, and to restore the vertical intersection of the weft yarn and the warp yarns in the whole width.
Knitted fabrics are fabrics formed by sequentially bending yarns into loops, and interlooping all the loops with each other, and are classified into warp knitted fabrics and weft knitted fabrics according to the process of forming the loops by the yarns. The bias/skew of the knitted fabric is the deviation of the stitches from a straight line perpendicular to the wales of the fabric, i.e. the courses of the knitted fabric are connected in series leaving a state of equilibrium, unlike the migration of each yarn with the woven fabric. Therefore, for correcting the state of the wale bias of the knitted fabric, it is only necessary to apply mechanical correction to the starting position of the course bias of the knitted fabric so as to restore the state to be perpendicular to the straight line of the wale, and other stitch biases connected in series with the starting position are corrected in a smooth manner, unlike the case where the woven fabric is corrected for every weft which has deviated, which is determined by the weave structure of the knitted fabric.
In the weaving and post-finishing processes of the fabric, due to the influence of equipment precision errors, various mechanical movements and manual operation, weft skew, weft bending, warp bending and pattern bending are often generated to influence the subsequent processing, so that the quality of finished fabrics is influenced, the use value of textiles is reduced, and the weft yarn distortion is corrected by using a weft straightening device. The existing weft straightening device mainly comprises a pinwheel weft straightening device and a roller weft straightening device.
The pinwheel weft straightening device is a passive weft straightening device, two sides of the fabric needing weft straightening in the radial direction are nailed on the outer circumferential surfaces of a left pinwheel and a right pinwheel, and the pinwheels are in a completely free rotating state. In the process that the pinwheels rotate, the splayed arrangement of the two pinwheels provides warp component force and weft component force for the fabric, the weft component force corrects weft bending of the fabric, the warp component force provides rotating torque for the pinwheels, so that the pinwheels at the lagging ends of the weft skew accelerate, the pinwheels at the leading ends of the weft skew decelerate, and the weft skew of the fabric is corrected.
Therefore, to improve the weft straightening effect of the fabric, the inclination of the pin wheel needs to be increased to increase the fabric spreading amount, but the subsequent problems are that the too large spreading of the pin wheel causes the defects of edge breakage, too large pin holes, printing white edges and the like, and some fabric after-finishing processes need to control the spreading amount, so that the weft straightening effect is limited by the allowable maximum spreading amount of the fabric.
The key of the pin wheel weft straightening is that the warp direction of the fabric is required to be kept in a loose state, if the warp direction tension of the fabric is too large, the speed difference between two pin wheels is reduced, the weft straightening effect is extremely poor, loose cloth feeding is required, and the problem brought by the loose cloth feeding is that the fabric is easy to deckle, and the fabric is broken by deckle from the pin wheels. The edge suction device is prevented from being installed at the edge of the fabric, the warp tension of the fabric is too large, the weft straightening effect is greatly reduced, and the weft straightening effect is influenced by the warp tension of the fabric.
The pin wheel weft straightening is realized by recovering the internal force of the fabric, a certain time is required from the pin wheel insertion to the pin wheel withdrawal of the fabric, and the pin wheel weft straightening effect is limited by the running speed of the fabric. In addition, when the fabric leaves the pinwheel, that is, when the fabric is subjected to a needle miss, a certain weft bending is generated, and high-precision weft straightening cannot be realized.
The pinwheel weft straightening device has the advantages that the two pinwheels completely belong to driven bodies which can rotate freely, no driving power exists, the rotating damping torque of the pinwheels is reduced, the weft straightening effect is improved, the processing and matching part precision of the pinwheels is very strict, the diameter of the pinwheels is usually 500-1000 mm, the pinwheels are large in size, high in processing difficulty and high in manufacturing cost, the pinwheels are easy to break when the pinwheels are sewn, when the pinwheels cannot be repaired, the whole pinwheels are scrapped, and the pinwheel weft straightening use and maintenance cost is high.
The fabric is penetrated by the needles of the pinwheel to advance in the two sides in the width direction, when the turned edges of the cloth and the cloth are staggered in the width direction, the needles of the pinwheel are easy to deviate from the cloth edges and fall off the edges, secondly, the pinwheel penetrates the fabric, the cloth cover is easy to damage, moreover, some fabrics have sparse organizational structures, the two sides cannot be penetrated by the needles of the pinwheel to advance at all, and the conditions limit the use range of the whole weft of the pinwheel.
Adopt the whole latitude device of roll-type to correct the fabric distortion, use a plurality of correction rollers for example bend roller and straight roller to correct the fabric distortion through adjusting the fabric stroke usually, this kind of whole latitude device of roll-type is because need adjust the fabric through many correction rollers, and mechanical structure is comparatively complicated, and it is also longer to adjust the stroke, belongs to the system of great time delay, and the response is slow, is unfavorable for real-time correction control.
If the width of the fabric is smaller than the working width of the correcting roller, the correcting efficiency is correspondingly reduced, and the fabric entering the roller type weft straightening device is required to be in a good centered state, otherwise, the bending roller can multiply and enlarge the deformation degree. For knitted fabrics which have high extensibility and are easy to deform under external force, chiffon fabrics which have loose structures and low-elasticity woven fabrics, the knitted fabrics and the low-elasticity woven fabrics are easy to generate elasticity due to the structures of the knitted fabrics and can still return to the original deformation state even after being straightened by a straightening roller.
In addition, when the fabric is in weft skew/weft bending, the angle of the correcting roller is adjusted to increase the distance of the fabric at the part of the skew/weft bending so as to improve the weft skew/weft bending of the fabric. For the non-elastic fabric, after the angle of the correcting roller is adjusted, the full-width inward fabric does not completely cover the correcting roller any more, the fabric is suspended, and the weft skew/weft bend cannot be corrected at all, so that the non-elastic fabric cannot be corrected at all by the correcting roller.
For high-elasticity fabrics, the straightening roller or the pin wheel does not have enough weft straightening strength, the straightened fabric weft yarn is easy to restore to the original shape, and both cannot effectively improve weft skew/weft bending.
In conclusion, the pin wheel weft straightening device and the roller weft straightening device have the defects of complex structure, long adjusting stroke, poor weft straightening effect, limited applicable textile types and the like. Therefore, the rapid development of textiles, the updating of fabric fibers and weaving technologies, and the unreasonable bending of fabrics cannot meet the requirements of correcting skew weft, warp weft and skew pattern bending by using the existing technologies, so that a novel weft straightening and pattern straightening measure is urgently needed to solve the existing dilemma, reproduce the pattern, grain, style and basic organization structure of the textile surface, improve the use value of the textile and improve the product quality.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a fabric weft straightening or pattern straightening mechanism which can carry out correction control in real time, has high correction response speed, no damage to fabrics during correction, simple structure, low use cost, wide range of applicable textile varieties, high correction precision and good correction effect on local deformation such as sewing heads and the like. Meanwhile, the invention also provides a fabric weft or pattern finishing method which has the advantages of high intelligent degree, high correction precision and good effect.
In order to solve the technical problem, the invention adopts the fabric weft straightening or pattern straightening mechanism which comprises a correcting mechanism, a detecting mechanism and a central processing unit; the correcting mechanism comprises a first expanding roller and a second expanding roller, the first expanding roller is driven by a first motor, the second expanding roller is driven by a second motor, the first expanding roller is arranged on one side of the fabric in the width direction, the second expanding roller is arranged on the other side of the fabric in the width direction, the detecting mechanism is arranged in front of and/or behind the correcting mechanism along the running path of the fabric, and the first motor, the second motor and the detecting mechanism are controlled by a central processing unit.
As a preferred embodiment of the present invention, the first spreader roll includes a first support roller cylinder, a first slider support, a first slider, a first ring, and a first push plate, the first sliding plate support is a ring body, a plurality of first bosses are arranged on the outer circumferential surface along the circumferential direction, the first sliding plate support is arranged on the first supporting roller, the number of the first sliding plates is the same as that of the first bosses, the first sliding plate is connected with the first boss in a sliding way, the first push plate is provided with a first bearing seat, a first bearing is arranged on the first bearing seat, the first circular ring is arranged on the first bearing, one end of the first sliding plate is connected with the first circular ring, the first motor is arranged on the first supporting seat, the first motor penetrates through an inner hole of the first supporting seat through a first transmission shaft to be connected with the first supporting roller, and the first push plate is rotatably connected with the first supporting seat;
the second expander roll includes second support roller, second slide support, second slide, second ring and second push pedal, the second slide support is the ring form and is equipped with a plurality of second boss along circumference on the periphery, second slide support mounting is on second support roller, second slide quantity is the same with second boss quantity, and second slide and second boss sliding connection, install the second bearing in the second push pedal, is equipped with the second bearing on the second bearing, the second ring is installed on the second bearing, and the one end and the second ring of second slide link to each other, the second motor is installed on the second bearing, and the second motor passes the hole of second bearing through the second transmission shaft and links to each other with second support roller, the second push pedal with the second bearing rotates to be connected.
As a preferred embodiment of the present invention, the fabric weft straightening or pattern straightening mechanism further includes a frame, the first support seat and the second support seat are respectively rotatably connected to the frame, the first support seat is driven by the first linear motion mechanism to rotate, the second support seat is driven by the second linear motion mechanism to rotate, the first push plate is driven by the third linear motion mechanism, the second push plate is driven by the fourth linear motion mechanism, and the first linear motion mechanism, the second linear motion mechanism, the third linear motion mechanism and the fourth linear motion mechanism are respectively controlled by the central processing unit.
As a preferred embodiment of the present invention, the fabric weft straightening or pattern straightening mechanism further comprises a third spreading roller which is arranged in front of the straightening mechanism along the running path of the fabric, and the third spreading roller is arranged along the whole width direction of the fabric.
In a preferred embodiment of the present invention, the third spreader roll is a spiral spreader roll, a rubber spreader roll, or a telescopic plate spreader roll.
In a preferred embodiment of the present invention, the detection mechanism includes an industrial camera and a camera light source or a photoelectric detection sensor, and the industrial camera, the camera light source and the photoelectric detection sensor are all connected to the central processing unit.
In a preferred embodiment of the present invention, the central processing unit is a digital controller with a human-machine interface, or an embedded industrial controller, or an industrial personal computer, or a PLC programmable controller.
In order to solve the technical problem, the invention adopts a fabric weft straightening or weft straightening method, wherein a, under the condition that a detection mechanism is arranged in front of or behind a correction mechanism along a running path of a fabric, the method comprises the following steps:
A. the detection mechanism collects weft yarn and flower shape conditions of the running fabric and transmits the collected data to the central processing unit;
B. the central processing unit receives and processes the data of the detection mechanism and judges whether skew weft, warp weft, skew flower shape and flower shape bend occur;
C. when the central processing unit judges that skewing/skew and bending/skew occur, the skewing/skew is corrected by adjusting the difference of the rotating speed between the first spreading roller and the second spreading roller; and the first spreading roller and the second spreading roller rotate and simultaneously exert the width-wise tension on the fabric to correct the weft bending/flower bending, and the method comprises the following specific steps:
c1, when one end of the weft yarn at the side of the first expander roll lags behind the other end of the weft yarn at the side of the second expander roll, the central processing unit controls the rotating speed of the first expander roll to be larger than that of the second expander roll, corrects the skew/pattern skew of the fabric, and corrects the weft bend/pattern bend by applying the radial tension to the fabric while the first expander roll and the second expander roll rotate;
c2, when one end of the weft yarn at the side of the first spreading roller is ahead of the other end of the weft yarn at the side of the second spreading roller, the central processing unit controls the rotating speed of the first spreading roller to be less than that of the second spreading roller, corrects the skew/pattern skew of the fabric, and corrects the weft bend/pattern bend by applying the radial tension to the fabric while the first spreading roller and the second spreading roller rotate;
b. in the case where the detecting means are placed in front of and behind the straightening means along the running path of the fabric, the method comprises the following steps:
A. a detection mechanism behind the correction mechanism collects weft yarn and flower shape conditions of the running fabric and transmits the collected data to the central processing unit;
B. b, the central processing unit receives and processes the data of the detection mechanism in the step A, and judges whether the skewing of the weft, the bending of the weft, the skew of the flower shape and the bending of the flower shape occur;
C. when the central processing unit judges that skewing/skew and bending/skew occur, the skewing/skew is corrected by adjusting the difference of the rotating speed between the first spreading roller and the second spreading roller; and the first spreading roller and the second spreading roller rotate and simultaneously exert the width-wise tension on the fabric to correct the weft bending/flower bending, and the method comprises the following specific steps:
c1, when one end of the weft yarn at the side of the first expander roll lags behind the other end of the weft yarn at the side of the second expander roll, the central processing unit controls the rotating speed of the first expander roll to be larger than that of the second expander roll, corrects the skew/pattern skew of the fabric, and corrects the weft bend/pattern bend by applying the radial tension to the fabric while the first expander roll and the second expander roll rotate;
c2, when one end of the weft yarn at the side of the first spreading roller is ahead of the other end of the weft yarn at the side of the second spreading roller, the central processing unit controls the rotating speed of the first spreading roller to be less than that of the second spreading roller, corrects the skew/pattern skew of the fabric, and corrects the weft bend/pattern bend by applying the radial tension to the fabric while the first spreading roller and the second spreading roller rotate;
D. a detection mechanism in front of the correction mechanism collects weft yarn and flower shape conditions of the running fabric and transmits the collected data to a central processing unit;
E. c, the central processing unit receives and processes the data of the detection mechanism in the step D, and judges whether the fabric has skew weft, warp weft, skew pattern and curved pattern after the fabric passes through the step C;
F. c, when the central processing unit judges that skew/pattern skew and warp/pattern bending still exist after the step C, correcting and adjusting the rotation speed difference between the first spreading roller and the second spreading roller, and correcting the skew/pattern skew; and the first spreading roller and the second spreading roller rotate and exert the radial tension on the fabric at the same time to continuously correct the weft bending/flower shape bending, and the method comprises the following specific steps:
f1, when one end of the weft yarn at the side of the first expander roll lags behind the other end of the weft yarn at the side of the second expander roll, the central processing unit controls to continuously increase the rotating speed of the first expander roll or continuously reduce the rotating speed of the second expander roll to correct the skewing/skewing of the weft yarn of the fabric, and the first expander roll and the second expander roll exert the amplitude tension on the fabric while rotating to continuously correct the skewing/skewing of the weft yarn;
f2, when one end of the weft yarn on the side of the first spreading roller is ahead of the other end of the weft yarn on the side of the second spreading roller, the central processing unit controls to continuously reduce the rotating speed of the first spreading roller or continuously increase the rotating speed of the second spreading roller so as to correct the skewing/skewing of the weft yarn of the fabric, and the first spreading roller and the second spreading roller rotate and simultaneously exert the width-wise tension on the fabric so as to continuously correct the skewing/skewing of the weft yarn.
As a preferred embodiment of the present invention, while the step F is performed, the central processing unit controls to enlarge the first and second sliding plate strokes of the first and second spreading rolls to correct the weft/flower-shaped warp; or the central processing unit controls to reduce the included angle between the first spreading roller and the second spreading roller and correct the weft bending/flower bending.
After the technical scheme is adopted, the invention has the following beneficial effects:
with the rapid development of textile fabrics, the fabric organization structure is numerous, the existing weft straightening technology and equipment can not correct shuttle fabrics without elastic fibers and knitted fabrics containing elastic fibers such as spandex, lycra and the like.
The method perfectly corrects the crooked of the fabric, has high weft-finishing and flower-finishing precision, avoids the influence of the fabric width on the weft-finishing and flower-finishing, breaks through the bottleneck of unstable correction effect of the existing weft-finishing and flower-finishing technology, reproduces the flower shape, the grain, the style and the basic organization structure of the surface of the textile, improves the use value of the textile and improves the product quality.
The invention sets a first spreading roller and a second spreading roller on the two sides of the fabric in the width direction, the first spreading roller is driven by a first motor to rotate, the second spreading roller is driven by a second motor to rotate, the first motor and the second motor are respectively controlled by a central processing unit, when the fabric is in work, the central processing unit respectively and precisely adjusts and controls the rotating speed of the first spreading roller and the rotating speed of the second spreading roller according to the detection data of a detection mechanism, namely the rotating speed of the first spreading roller is different from the rotating speed of the second spreading roller, the first spreading roller and the second spreading roller have a speed difference, the central processing unit obtains the fabric distortion state according to the detection data, corrects the skewing/the skewing of the weft by adjusting the rotating speed of the first spreading roller to be larger than or smaller than the rotating speed of the second spreading roller in real time, and corrects the skewing/the bending of the weft by the width direction tension applied to the fabric when the first spreading roller and the second spreading roller rotate, the invention has the advantages of simple correction structure, short adjustment stroke, quick system response, high correction precision and good correction effect, and is beneficial to real-time correction.
Compared with the pinwheel in the prior art, the first spreading roller and the second spreading roller have the advantages of greatly reduced volume which is even only one tenth of the pinwheel, extremely small occupied space, simple and convenient processing and low use cost.
According to the invention, the third spreading roller such as the spiral spreading roller is arranged in front of the correcting mechanism, so that the quality of the corrected fabric can be further stabilized and improved, and the product quality is more stable and reliable.
The first motor is arranged on the first supporting seat, the first supporting seat is rotationally connected with the frame, the first supporting seat is driven by the first linear motion mechanism to rotate, the second motor is arranged on the second supporting seat, the second supporting seat is rotationally connected with the frame, and the second supporting seat is driven by the second linear motion mechanism to rotate.
The invention adopts the first spreading roller and the second spreading roller, can effectively correct the fabric which has loose structure, large extensibility and easy deformation, has wide range of applicable textile types, does not have any damage to the fabric during correction, has quick correction response and can carry out correction control in real time.
The invention ensures the state of the fabric after being corrected to be kept, has compact structure, has higher weft straightening and pattern straightening strength than the prior art, can correct high-deformation weft yarns, is more stable, is easy to be used with other after-finishing equipment, and has better weft straightening effect.
The method provided by the invention has the advantages that the method steps are optimized according to the characteristics that the deformation of the textile in the operation process is nonlinear and time-varying, the intelligent degree is high, the production efficiency is greatly improved, the labor intensity of operators is reduced, the requirements of actual industrial production are greatly met, and the competitiveness of enterprises is enhanced.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a weft straightening or pattern straightening mechanism of the fabric.
Fig. 2 is a schematic view of an installation structure of the first spreader bar to the frame according to the present invention.
Fig. 3 is a schematic structural view of a preferred embodiment of the first and second spreader rolls of the present invention.
Fig. 4 is a schematic top view of a first spreader bar and a second spreader bar of the present invention.
Fig. 5 is a schematic view of an installation structure of the first slide plate and the first slide plate support, the first ring, and the second slide plate support, the second ring according to the present invention.
Fig. 6 is a schematic view of an installation structure of the first push plate and the first supporting seat, the first circular ring, and the second push plate and the second supporting seat, the second circular ring according to the present invention.
Fig. 7 is a top view of fig. 6.
Fig. 8 is a schematic structural diagram of the first and second sliding plates according to the present invention.
Detailed Description
A fabric weft straightening or pattern straightening mechanism shown in fig. 1 to 8 comprises a correcting mechanism, a detecting mechanism 11 and a central processing unit; the straightening mechanism comprises a first spreading roller 1 and a second spreading roller 2, the first spreading roller 1 is driven by a first motor 3, the second spreading roller 2 is driven by a second motor 4, in the straightening mechanism, the first spreading roller 1 can be driven by the first motor 3 through a speed reducer or directly driven by the first motor 3 through an output shaft, and the second spreading roller 2 can be driven by the second motor 4 through the speed reducer or directly driven by the second motor 4 through the output shaft; as another embodiment, the outer rotor of the first motor 3 may also be used as the first expander roll 1, the outer rotor of the second motor 4 may also be used as the second expander roll 2, the first expander roll 1 is disposed on one side of the fabric 12 in the width direction as shown in the left side, and the second expander roll 2 is disposed on the other side of the fabric 12 in the width direction as shown in the right side, in the present invention, the first expander roll 1 and the second expander roll 2 are preferably both disposed horizontally in the width direction of the fabric 12, that is, both are symmetrically disposed horizontally along the length direction of the fabric 12, in operation, the fabric 12 preferably wraps part of the outer peripheral surface of the first expander roll 1 and the second expander roll 2, of course, the first expander roll 1 and the second expander roll 2 may also only run in contact with the fabric 12, and in addition, the first expander roll 1 and the second expander roll 2 may also not be disposed horizontally, but disposed at a certain angle or slightly inclined in the vertical direction, etc., the detection means 11 are placed in front of and/or behind the straightening means along the running path of the fabric, and the first motor 3, the second motor 4 and the detection means 11 are controlled by a central processing unit, not shown. In the present invention, the first motor 3, the second motor 4 and the detection mechanism 11 may be electrically connected to the central processing unit by a cable or wirelessly connected to the central processing unit by a wireless signal, and controlled by the central processing unit.
As a preferred embodiment of the present invention, as shown in fig. 3 to 8, the first spreader bar 1 includes a first support roller barrel 1-1, a first sliding plate support 1-2, a first sliding plate 1-3, a first ring 1-4 and a first push plate 1-5, the first sliding plate support 1-2 is a circular ring body, and a plurality of first bosses 1a are circumferentially provided on an outer circumferential surface, the first sliding plate support 1-2 preferably has two, the first sliding plate support 1-2 is fixedly mounted on the first support roller barrel 1-1, the number of the first sliding plates 1-3 is the same as that of the first bosses 1a, for example, the number of the first bosses 1a is 12, the number of the first sliding plates 1-3 is also 12, and the first sliding plates 1-3 are slidably connected with the first bosses 1a, in practice, it is preferable that grooves 1 a-1 are provided on both sides of each first boss 1a, rectangular sliding strips 1 a-3 are arranged on two sides of each first sliding plate 1-3, the first sliding plates 1-3 are embedded in grooves 1 a-1 on two sides of the first boss 1a through the sliding strips 1 a-3 on two sides to form sliding connection of the two, of course, the two sliding structures can also be adopted to realize sliding connection of the two through dovetail groove sliding structures and the like, a first bearing seat 1b is fixedly arranged on the first push plate 1-5 through bolts, an inner hole 1 b-2 penetrating through the first push plate 1-5 is arranged on the first bearing seat 1b, a first bearing 1 b-1 is arranged on the first bearing seat 1b, the first circular ring 1-4 is arranged on the first bearing 1 b-1, the first circular ring 1-4 is tightly sleeved or interference-arranged on an outer ring of the first bearing 1 b-1, one end of each first sliding plate 1-3 is connected with the first circular ring 1-4, namely one end of each first sliding plate 1-3 is respectively connected with the first circular ring 1-4, the first motor 3 is fixedly arranged on a first bearing seat 1-6 through a bolt, the first motor 3 penetrates through an inner hole 1 b-2 of a first bearing seat 1b through a first transmission shaft 3a to be connected with a first supporting roller 1-1, when the first motor works, the first supporting roller 1-1 is driven to rotate by the first motor 3 through the first transmission shaft 3a, and a first push plate 1-5 is rotatably connected with the first bearing seat 1-6 through a first rotating shaft 1 a-5; as a preferred embodiment of the invention, one end of the first sliding plate 1-3 is detachably connected with the first circular ring 1-4 through a connecting plate 1-8 and a threaded connecting piece 1-9. In implementation, the connecting plates 1 to 8 are preferably right-angled, the threaded connecting pieces 1 to 9 preferably comprise upright bolts and horizontally arranged rod end joint bearings or horizontal bolts, one ends of the connecting plates 1 to 8 are connected with the first sliding plates 1 to 3 through screws, the other ends of the connecting plates 1 to 8 are in threaded connection with the rod end joint bearings or the horizontal bolts, and one ends of the upright bolts penetrate through bearing inner holes of the rod end joint bearings or nail heads of the horizontal bolts to be in threaded connection with the first circular rings 1 to 4. In the present invention, one end of the first sliding plate 1-3 may also be fixedly connected to the first ring 1-4 by welding through a connecting rod, not shown. The outer wall surface of the first sliding plate 1-3 is preferably provided with the burr 13, and the diameter of the first spreader roll 1 is preferably 50 to 500 mm.
The second expanding roller 2 and the first expanding roller 1 have the same structure and are symmetrically arranged along the length direction of the fabric 12, the second expanding roller 2 comprises a second support roller 2-1, a second sliding plate support 2-2, two second sliding plates 2-3, a second ring 2-4 and a second push plate 2-5, the second sliding plate support 2-2 is circular and is circumferentially provided with a plurality of second bosses 2a on the outer circumferential surface, the second sliding plate support 2-2 preferably comprises two second sliding plate supports 2-2, the second sliding plate support 2-2 is fixedly arranged on the second support roller 2-1, the number of the second sliding plates 2-3 is the same as that of the second bosses 2a, for example, the number of the second bosses 2a is 12, the number of the second sliding plates 2-3 is also 12, the second sliding plates 2-3 are slidably connected with the second bosses 2a, in implementation, preferably, grooves 2 a-1 are arranged on two sides of each second boss 2a, rectangular sliding strips 2 a-3 are arranged on two sides of each second sliding plate 2-3, the second sliding plates 2-3 are embedded in grooves 2 a-1 on two sides of the second boss 2a through the sliding strips 2 a-3 on two sides to form sliding connection of the two sliding plates, of course, the two sliding plates can also be connected in a sliding manner by other sliding structures such as dovetail groove sliding structures and the like, a second bearing seat 2b is arranged on the second push plate 2-5 through bolts, an inner hole 2 b-2 penetrating through the second push plate 2-5 is arranged on the second bearing seat 2b, a second bearing 2 b-1 is arranged on the second bearing seat 2b, the second ring 2-4 is arranged on the second bearing 2 b-1, the second ring 2-4 is tightly sleeved or interference-arranged on an outer ring of the second bearing 2 b-1, one end of each second sliding plate 2-3 is connected with the second ring 2-4, namely one end of each second sliding plate 2-3 is respectively connected with the second ring 2-4, the second motor 4 is fixedly arranged on the second supporting seat 2-6 through a bolt, the second motor 4 penetrates through an inner hole 2 b-2 of the second bearing seat 2b through a second transmission shaft 4a to be connected with a second supporting roller 2-1, when the second supporting roller works, the second motor 4 drives the second supporting roller 2-1 to rotate through the second transmission shaft 4a, and the second push plate 2-5 is rotatably connected with the second supporting seat 2-6 through a second rotating shaft 2 a-5; as a preferred embodiment of the invention, one end of the second sliding plate 2-3 is detachably connected with the second circular ring 2-4 through a connecting plate 2-8 and a threaded connecting piece 2-9. In implementation, the connecting plates 2-8 are preferably right-angled, the threaded connecting pieces 2-9 preferably comprise upright bolts and horizontally arranged rod end knuckle bearings or horizontal bolts, one ends of the connecting plates 2-8 are connected with the second sliding plates 2-3 through screws, the other ends of the connecting plates 2-8 are connected with the rod end knuckle bearings or the horizontal bolts through threads, and one ends of the upright bolts penetrate through bearing inner holes of the rod end knuckle bearings or nail heads of the horizontal bolts to be connected with the second circular rings 2-4 through threads. In the present invention, one end of the second sliding plate 2-3 may also be fixedly connected to the second ring 2-4 by welding through a connecting rod, not shown. The outer wall surface of the second sliding plate 2-3 is preferably provided with the burr 13, and the diameter of the second expander roll 2 is preferably 50 to 500 mm.
In the present invention, a commercially available conventional spiral spreader roll may be used for the first spreader roll 1 and the second spreader roll 2, for example, a left-handed spreader roll is used for the first spreader roll 1, a right-handed spreader roll is used for the second spreader roll 2, and the diameter of the spiral spreader roll is preferably 30 to 350 mm.
As a preferred embodiment of the present invention, as shown in fig. 1 and fig. 2, the fabric weft straightening or pattern straightening mechanism further includes a frame 5, the first support seat 1-6 and the second support seat 2-6 are respectively connected to the frame 5 through a first short shaft 14 and a second short shaft 15, the first support seat 1-6 is driven by the first linear motion mechanism 6 to rotate, the second support seat 2-6 is driven by the second linear motion mechanism 7 to rotate, the first push plate 1-5 is driven by the third linear motion mechanism 8, the second push plate 2-5 is driven by the fourth linear motion mechanism 9, and the first linear motion mechanism 6, the second linear motion mechanism 7, the third linear motion mechanism 8, and the fourth linear motion mechanism 9 are respectively controlled by the central processing unit. In the invention, the first linear motion mechanism 6, the second linear motion mechanism 7, the third linear motion mechanism 8 and the fourth linear motion mechanism 9 can be linear motors with screw rod and nut mechanisms, and can also be cylinders, electric push rods and the like, when in work, the central processing unit controls the rotation of the first supporting seat 1-6, the second supporting seat 2-6, the first push plate 1-5 and the second push plate 2-5 through the first linear motion mechanism 6, the second linear motion mechanism 7, the third linear motion mechanism 8 and the fourth linear motion mechanism 9 respectively, the first motor 3, the second motor 4 and the first expander roll 1 and the second expander roll 2 which are arranged on the first supporting seat 1-6 and the second supporting seat 2-6 respectively rotate along with the rotation, and the stroke of the first sliding plate 1-3 and the stroke of the second sliding plate 2-3 are changed along with the rotation, such as the stroke increase or the stroke decrease.
As a preferred embodiment of the invention, as shown in figure 1, the fabric weft straightening or pattern straightening mechanism further comprises a third spreading roll 10, wherein the third spreading roll 10 is arranged in front of the straightening mechanism along the running path of the fabric, and the third spreading roll 10 is arranged along the whole width direction of the fabric 12. The third spreader bar 10 may be an actively rotating spreader bar driven by a motor, or may be a freely rotating, i.e., passively rotating spreader bar driven by no power.
As a preferred embodiment of the present invention, the third spreader bar 10 includes a commercially available conventional spiral spreader bar, a rubber spreader roll, a telescopic plate type spreader bar, or the like.
In a preferred embodiment of the present invention, the detection means 11 includes an industrial camera, a camera light source, a photodetection sensor, etc., only the industrial camera is shown in the figure, and the photodetection sensor, etc., is not shown, and the industrial camera, the camera light source, and the photodetection sensor are connected to the central processing unit.
As a preferred embodiment of the present invention, the central processing unit is a digital controller with a human-machine interface, such as a DDC digital controller or an embedded industrial controller or an industrial personal computer or a PLC programmable controller, although other types of controllers may be used.
A method for the weft or pattern finishing of a fabric, see figure 1,
a. in the case where the detection means 11 are placed in front of or behind the straightening means along the path of travel of the fabric 12, the following steps are included:
A. the detection mechanism 11 collects the weft yarn and flower shape conditions of the fabric 12 in operation and transmits the collected data to the central processing unit; the detection mechanism 11 is preferably an industrial camera, such as a line camera or an area camera, and during the moving process of the fabric 12, firstly, the industrial camera collects the whole continuous weft yarn/flower shape image of the fabric 12, collects the whole weft yarn/whole flower shape image on the moving fabric 12 on line in real time, ensures the accuracy of the collection of the fabric weft yarn/flower shape, and transmits the collected whole weft yarn/whole flower shape image to the central processing unit in time;
B. the central processing unit receives and processes the data of the detection mechanism 11 and judges whether the skewing of the weft, the bending of the weft, the skewing of the flower shape and the bending of the flower shape occur; the central processing unit compares the obtained whole weft yarn/whole flower shape image with a set standard whole weft yarn/whole flower shape image to judge whether skew weft yarn, warp weft, skew flower shape and flower shape bending occur or not;
C. when the central processing unit judges that skewing/skew and bending/skew of the weft occur, the skewing/skew of the weft is corrected by adjusting the difference of the rotating speed between the first spreading roller 1 and the second spreading roller 2; and the first spreading roller 1 and the second spreading roller 2 rotate and simultaneously exert the radial tension on the fabric to correct the weft bending/flower bending, and the method comprises the following specific steps:
c1, when one end of the weft yarn at the side of the first expanding roller 1 lags behind the other end of the weft yarn at the side of the second expanding roller 2, the central processing unit controls the rotating speed of the first expanding roller 1 to be greater than that of the second expanding roller 2, corrects the skewness/skew of the weft yarn of the fabric, and corrects the warp/skew of the weft yarn by the tension applied to the fabric in the direction of the width while the first expanding roller 1 and the second expanding roller 2 rotate;
c2, when one end of the weft yarn at the side of the first expanding roller 1 is ahead of the other end of the weft yarn at the side of the second expanding roller 2, the central processing unit controls the rotating speed of the first expanding roller 1 to be less than that of the second expanding roller 2, corrects the skewing/skewing of the weft yarn of the fabric, and corrects the warp/skewing of the weft yarn by the radial tension applied to the fabric when the first expanding roller 1 and the second expanding roller 2 rotate;
b. in the case where the detection means 11 are placed in front of and behind the straightening means along the path of travel of the fabric 12, the following steps are included:
A. a detection mechanism 11 behind the correction mechanism collects weft yarn and flower shape conditions of the running fabric 12 and transmits the collected data to a central processing unit; the detection mechanism 11 is preferably an industrial camera, such as a line camera or an area camera, and during the moving process of the fabric 12, firstly, the industrial camera collects the whole continuous weft yarn/flower shape image of the fabric 12, collects the whole weft yarn/whole flower shape image on the moving fabric 12 on line in real time, ensures the accuracy of the collection of the fabric weft yarn/flower shape, and transmits the collected whole weft yarn/whole flower shape image to the central processing unit in time;
B. the central processing unit receives and processes the data of the detection mechanism 11 in the step A, and judges whether the skewing of the weft, the bending of the weft, the skew of the flower shape and the bending of the flower shape occur; the central processing unit compares the obtained whole weft yarn/whole flower shape image with a set standard whole weft yarn/whole flower shape image to judge whether skew weft yarn, warp weft, skew flower shape and flower shape bending occur or not;
C. when the central processing unit judges that skewing/skew and bending/skew of the weft occur, the skewing/skew of the weft is corrected by adjusting the difference of the rotating speed between the first spreading roller 1 and the second spreading roller 2; and the first spreading roller 1 and the second spreading roller 2 rotate and simultaneously exert the radial tension on the fabric to correct the weft bending/flower bending, and the method comprises the following specific steps:
c1, when one end of the weft yarn at the side of the first expanding roller 1 lags behind the other end of the weft yarn at the side of the second expanding roller 2, the central processing unit controls the rotating speed of the first expanding roller 1 to be greater than that of the second expanding roller 2, corrects the skewness/skew of the weft yarn of the fabric, and corrects the warp/skew of the weft yarn by the tension applied to the fabric when the first expanding roller 1 and the second expanding roller 2 rotate;
c2, when one end of the weft yarn at the side of the first expanding roller 1 is ahead of the other end of the weft yarn at the side of the second expanding roller 2, the central processing unit controls the rotating speed of the first expanding roller 1 to be less than that of the second expanding roller 2, corrects the skewing/skewing of the weft yarn of the fabric, and corrects the warp/skewing of the weft yarn by the amplitude tension applied to the fabric when the first expanding roller 1 and the second expanding roller 2 rotate;
D. a detection mechanism 11 in front of the correction mechanism collects weft yarn and flower shape conditions of a running fabric 12 and transmits the collected data to a central processing unit; the detection mechanism 11 is preferably an industrial camera which collects the whole weft yarn/whole flower-shaped image on the moving fabric 12 on line in real time and transmits the collected whole weft yarn/whole flower-shaped image to the central processing unit in time;
E. the central processing unit receives and processes the data of the detection mechanism 11 in the step D, and judges whether the fabric 12 has skew weft, warp weft, skew pattern and curved pattern after the step C; specifically, the central processing unit compares the obtained whole weft yarn/whole flower shape image with a set, namely standard, whole weft yarn/whole flower shape image, and judges whether the fabric 12 has weft skew, weft bending, flower shape skew and flower shape bending after the step C;
F. c, when the central processing unit judges that skew/pattern skew and warp/pattern bending still exist after the step C, correcting and adjusting the rotation speed difference between the first spreading roller 1 and the second spreading roller 2, and correcting the skew/pattern skew; and the first spreading roller 1 and the second spreading roller 2 rotate and exert the radial tension on the fabric at the same time to continuously correct the weft bending/flower bending, and the method comprises the following specific steps:
f1, when one end of the weft yarn on the side of the first spreading roller 1 lags behind the other end of the weft yarn on the side of the second spreading roller 2, the central processing unit controls to continuously increase the rotating speed of the first spreading roller 1 or continuously decrease the rotating speed of the second spreading roller 2 to correct the skewing/skew of the weft yarn of the fabric, and the first spreading roller 1 and the second spreading roller 2 rotate and simultaneously exert the width-wise tension on the fabric to continuously correct the warp/skew of the weft yarn;
f2, when one end of the weft yarn on the side of the first spreading roller 1 is ahead of the other end of the weft yarn on the side of the second spreading roller 2, the central processing unit controls to continuously reduce the rotating speed of the first spreading roller 1 or continuously increase the rotating speed of the second spreading roller 2, corrects the skewing/the skew of the weft of the fabric, and continuously corrects the warp/the skew of the weft by the tension applied to the fabric in the width direction while the first spreading roller 1 and the second spreading roller 2 rotate.
As a preferred embodiment of the present invention, while the step F is performed, the central processing unit controls to enlarge the strokes of the first sliding plate 1-3 and the second sliding plate 2-3 of the first spreading roll 1 and the second spreading roll 2 to correct the weft/flower-shaped warp; or the central processing unit controls to reduce the included angle between the first spreading roller 1 and the second spreading roller 2, so that the fabric radial tension can be properly increased and the weft bending/flower bending can be corrected. Specifically, the central processing unit respectively controls a first push plate 1-5 and a second push plate 2-5 to rotate through a third linear motion mechanism 8 and a fourth linear motion mechanism 9, and correspondingly increases the inclination angles between the first push plate 1-5 and the second push plate 2-5 and a first transmission shaft 3a and a second transmission shaft 4a respectively, so that the strokes of a first sliding plate 1-3 and a second sliding plate 2-3 can be increased, or the central processing unit respectively controls a first supporting seat 1-6 and a second supporting seat 2-6 to rotate through a first linear motion mechanism 6 and a second linear motion mechanism 7, so that a first spreading roller 1 and a second spreading roller 2 rotate along with the first linear motion mechanism, and the bending/flower-shaped bending of weft yarns is corrected by changing and preferably properly reducing the included angle between the axial leads of the first spreading roller 1 and the second spreading roller 2.
Through tests, the invention has the advantages of wide range of applicable textile types, simple structure, low use cost, no damage to the textile during correction, quick correction response, capability of performing correction control in real time, high correction precision, good effect, improvement on product percent of pass and good effect.
Claims (9)
1. A fabric weft straightening or pattern straightening mechanism is characterized in that: comprises a correction mechanism, a detection mechanism and a central processing unit; the correcting mechanism comprises a first expanding roller (1) and a second expanding roller (2), the first expanding roller (1) is driven by a first motor (3), the second expanding roller (2) is driven by a second motor (4), the first expanding roller (1) is arranged on one side of the fabric in the width direction, the second expanding roller (2) is arranged on the other side of the fabric in the width direction, the detecting mechanism is arranged in the front and/or the rear of the correcting mechanism along the running route of the fabric, and the first motor (3), the second motor (4) and the detecting mechanism are controlled by a central processing unit.
2. A fabric weft or fill and pattern arrangement according to claim 1, characterized in that:
the first spreading roller (1) comprises a first supporting roller barrel (1-1), a first sliding plate support (1-2), a first sliding plate (1-3), a first circular ring (1-4) and a first push plate (1-5), wherein the first sliding plate support (1-2) is a circular ring body, a plurality of first bosses (1 a) are arranged on the outer circumferential surface of the first sliding plate support along the circumferential direction, the first sliding plate support (1-2) is installed on the first supporting roller barrel (1-1), the number of the first sliding plates (1-3) is the same as that of the first bosses (1 a), the first sliding plate (1-3) is connected with the first bosses (1 a) in a sliding manner, a first bearing seat (1 b) is installed on the first push plate (1-5), a first bearing (1 b-1) is arranged on the first bearing seat (1 b), and the first circular ring (1-4) is installed on the first bearing (1 b-1), one end of a first sliding plate (1-3) is connected with a first circular ring (1-4), a first motor (3) is installed on a first supporting seat (1-6), the first motor (3) penetrates through an inner hole (1 b-2) of a first bearing seat (1 b) through a first transmission shaft (3 a) to be connected with a first supporting roller (1-1), and a first push plate (1-5) is rotatably connected with the first supporting seat (1-6);
the second expander roll (2) comprises a second support roller (2-1), a second sliding plate support (2-2), a second sliding plate (2-3), a second circular ring (2-4) and a second push plate (2-5), the second sliding plate support (2-2) is in a circular ring shape, a plurality of second bosses (2 a) are arranged on the outer circumferential surface along the circumferential direction, the second sliding plate support (2-2) is installed on the second support roller (2-1), the number of the second sliding plates (2-3) is the same as that of the second bosses (2 a), the second sliding plate (2-3) is connected with the second bosses (2 a) in a sliding manner, a second bearing seat (2 b) is installed on the second push plate (2-5), a second bearing (2 b-1) is arranged on the second bearing seat (2 b), and the second circular ring (2-4) is installed on the second bearing (2 b-1), one end of the second sliding plate (2-3) is connected with the second circular ring (2-4), the second motor (4) is installed on the second supporting seat (2-6), the second motor (4) penetrates through an inner hole (2 b-2) of the second supporting seat (2 b) through a second transmission shaft (4 a) to be connected with the second supporting roller (2-1), and the second push plate (2-5) is rotatably connected with the second supporting seat (2-6).
3. A fabric weft or fill and pattern arrangement according to claim 2, characterized in that: the fabric weft straightening or pattern straightening mechanism further comprises a rack (5), wherein the first supporting seats (1-6) and the second supporting seats (2-6) are respectively connected with the rack (5) in a rotating mode, the first supporting seats (1-6) are driven to rotate by the first linear motion mechanism (6), the second supporting seats (2-6) are driven to rotate by the second linear motion mechanism (7), the first push plates (1-5) are driven by the third linear motion mechanism (8), the second push plates (2-5) are driven by the fourth linear motion mechanism (9), and the first linear motion mechanism (6), the second linear motion mechanism (7), the third linear motion mechanism (8) and the fourth linear motion mechanism (9) are respectively controlled by the central processing unit.
4. A fabric weft or fill and pattern arrangement according to claim 1, characterized in that: the fabric weft straightening or pattern straightening mechanism further comprises a third spreading roller (10), the third spreading roller (10) is arranged in front of the straightening mechanism along the running path of the fabric, and the third spreading roller (10) is arranged along the whole width direction of the fabric.
5. A fabric weft or fill and pattern arrangement according to claim 4, wherein: the third spreading roller (10) is a spiral spreading roller or a rubber spreading bending roller or a telescopic plate type spreading roller.
6. A fabric weft or fill and pattern arrangement according to claim 1, characterized in that: the detection mechanism comprises an industrial camera and a camera light source or a photoelectric detection sensor, and the industrial camera, the camera light source and the photoelectric detection sensor are all connected with the central processing unit.
7. A fabric weft or fill and pattern arrangement according to any one of claims 1 to 6, characterized in that: the central processing unit is a digital controller with a man-machine operation interface, an embedded industrial controller, an industrial personal computer or a PLC programmable controller.
8. A fabric weft or pattern finishing method is characterized in that:
a. in the case where the detection means are placed in front of or behind the straightening means along the path of travel of the fabric, the following steps are included:
A. the detection mechanism collects weft yarn and flower shape conditions of the running fabric and transmits the collected data to the central processing unit;
B. the central processing unit receives and processes the data of the detection mechanism and judges whether skew weft, warp weft, skew flower shape and flower shape bend occur;
C. when the central processing unit judges that skewing/skew and bending/skew occur, the skewing/skew is corrected by adjusting the difference of the rotating speed between the first spreading roller (1) and the second spreading roller (2); and the first spreading roller (1) and the second spreading roller (2) rotate and exert the radial tension on the fabric to correct the weft bending/flower bending, and the method comprises the following specific steps:
c1, when one end of the weft yarn on the side of the first spreading roller (1) lags behind the other end of the weft yarn on the side of the second spreading roller (2), the central processing unit controls the rotating speed of the first spreading roller (1) to be greater than that of the second spreading roller (2) to correct skewing/skew of the weft of the fabric, and the first spreading roller (1) and the second spreading roller (2) rotate and apply radial tension to the fabric to correct the skewing/skew of the weft;
c2, when one end of the weft yarn on the side of the first spreading roller (1) is ahead of the other end of the weft yarn on the side of the second spreading roller (2), the central processing unit controls the rotating speed of the first spreading roller (1) to be lower than that of the second spreading roller (2) to correct skewing/skew of the weft of the fabric, and the first spreading roller (1) and the second spreading roller (2) rotate and simultaneously exert the width-wise tension on the fabric to correct the skewing/skew of the weft;
b. in the case where the detecting means are placed in front of and behind the straightening means along the running path of the fabric, the method comprises the following steps:
A. a detection mechanism behind the correction mechanism collects weft yarn and flower shape conditions of the running fabric and transmits the collected data to the central processing unit;
B. b, the central processing unit receives and processes the data of the detection mechanism in the step A, and judges whether the skewing of the weft, the bending of the weft, the skew of the flower shape and the bending of the flower shape occur;
C. when the central processing unit judges that skewing/skew and bending/skew occur, the skewing/skew is corrected by adjusting the difference of the rotating speed between the first spreading roller (1) and the second spreading roller (2); and the first spreading roller (1) and the second spreading roller (2) rotate and exert the radial tension on the fabric to correct the weft bending/flower bending, and the method comprises the following specific steps:
c1, when one end of the weft yarn at the side of the first spreading roller (1) lags behind the other end of the weft yarn at the side of the second spreading roller (2), the central processing unit controls the rotating speed of the first spreading roller (1) to be greater than that of the second spreading roller (2) to correct the skewing/skewing of the weft yarn of the fabric, and the first spreading roller (1) and the second spreading roller (2) rotate and simultaneously exert the width-wise tension on the fabric to correct the skewing/skewing of the weft yarn;
c2, when one end of the weft yarn on the side of the first spreading roller (1) is ahead of the other end of the weft yarn on the side of the second spreading roller (2), the central processing unit controls the rotating speed of the first spreading roller (1) to be lower than that of the second spreading roller (2) to correct the skewing/skewing of the weft yarn of the fabric, and the first spreading roller (1) and the second spreading roller (2) rotate and simultaneously exert the width-wise tension on the fabric to correct the skewing/skewing of the weft yarn;
D. a detection mechanism in front of the correction mechanism collects weft yarn and flower shape conditions of the running fabric and transmits the collected data to a central processing unit;
E. c, the central processing unit receives and processes the data of the detection mechanism in the step D, and judges whether the fabric has skew weft, warp weft, skew pattern and curved pattern after the fabric passes through the step C;
F. c, when the central processing unit judges that skew/pattern skew and warp/pattern bending still exist after the step C, correcting and adjusting the rotation speed difference between the first spreading roller (1) and the second spreading roller (2) and correcting the skew/pattern skew; and the first spreading roller (1) and the second spreading roller (2) rotate and exert the breadth-wise tension on the fabric at the same time to continuously correct the weft bending/flower shape bending, and the method comprises the following specific steps:
f1, when one end of the weft yarn on the side of the first spreading roller (1) lags behind the other end of the weft yarn on the side of the second spreading roller (2), the central processing unit controls to continuously increase the rotating speed of the first spreading roller (1) or continuously decrease the rotating speed of the second spreading roller (2) to correct skewing/skewing of the weft of the fabric, and the first spreading roller (1) and the second spreading roller (2) rotate and simultaneously exert the breadth-wise tension on the fabric to continuously correct the skewing/skewing of the weft;
f2, when one end of the weft yarn on the side of the first spreading roller (1) is ahead of the other end of the weft yarn on the side of the second spreading roller (2), the central processing unit controls to continuously reduce the rotating speed of the first spreading roller (1) or continuously increase the rotating speed of the second spreading roller (2) to correct skewing/skewing of the weft of the fabric, and the first spreading roller (1) and the second spreading roller (2) rotate and simultaneously exert the breadth-wise tension on the fabric to continuously correct the skewing/skewing of the weft.
9. A fabric weft or fill and pattern finishing method according to claim 8, characterized in that:
while executing the step F, the central processing unit controls the strokes of a first sliding plate (1-3) and a second sliding plate (2-3) of the first spreading roller (1) and the second spreading roller (2) to be increased, and the weft bending/flower shape bending is corrected; or the central processing unit controls to reduce the included angle between the first spreading roller (1) and the second spreading roller (2) and correct the weft bending/flower-shaped bending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113322654A (en) * | 2021-07-06 | 2021-08-31 | 常州宏大智能装备产业发展研究院有限公司 | Fabric weft straightening method |
| CN113564854A (en) * | 2021-08-16 | 2021-10-29 | 浙江绍兴永利印染有限公司 | Multifunctional cloth adjusting device |
| CN114395907A (en) * | 2022-01-12 | 2022-04-26 | 绍兴金楚印染有限公司 | Last tension mechanism of weft straightener |
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