阅读说明：本技术 织物整纬或整纬整花系统及方法 (Fabric weft straightening or weft straightening and pattern straightening system and method ) 是由 顾金华 于 2020-08-24 设计创作，主要内容包括：本发明公开了一种织物整纬或整纬整花系统及方法,系统包括矫正机构、检测机构和中央处理单元；矫正机构包括第一主动辊轮、第二主动辊轮及若干矫正辊,第一主动辊轮由第一电机驱动,第二主动辊轮由第二电机驱动,若干矫正辊由驱动机构驱动；第一主动辊轮置于织物幅向一边,第二主动辊轮置于织物幅向另一边,若干矫正辊沿织物运行路线置于第一和第二主动辊轮前方,检测机构沿织物运行路线置于第一和第二主动辊轮前方和/或后方,第一、第二电机、驱动机构及检测机构由中央处理单元控制。第一、第二主动辊轮优选是外周具有摩擦面的摩擦辊轮。本发明适用纺织品种类范围广,矫正时对织物无损伤,矫正响应快,能实时进行矫正控制,矫正精度高、效果好。(The invention discloses a system and a method for weft straightening or weft straightening and pattern straightening of a fabric, wherein the system comprises a correcting mechanism, a detecting mechanism and a central processing unit; the correcting mechanism comprises a first driving roller, a second driving roller and a plurality of correcting rollers, the first driving roller is driven by a first motor, the second driving roller is driven by a second motor, and the plurality of correcting rollers are driven by the driving mechanism; the first driving roller is arranged on one side of the fabric in the width direction, the second driving roller is arranged on the other side of the fabric in the width direction, the plurality of correcting rollers are arranged in front of the first driving roller and the second driving roller along the running path of the fabric, the detection mechanism is arranged in front of and/or behind the first driving roller and the second driving roller along the running path of the fabric, and the first motor, the second motor, the driving mechanism and the detection mechanism are controlled by the central processing unit. The first and second driving rollers are preferably friction rollers having friction surfaces on the outer peripheries thereof. The invention has wide range of applicable textile types, no damage to the textile during correction, quick correction response, real-time correction control, high correction precision and good effect.)

1. A fabric weft or pattern finishing system is characterized in that: comprises a correction mechanism, a detection mechanism and a central processing unit; the straightening mechanism comprises a first driving roller (1), a second driving roller (2) and a plurality of straightening rollers, the first driving roller (1) is driven by a first motor (3), the second driving roller (2) is driven by a second motor (4), and the plurality of straightening rollers are driven by a driving mechanism; the first driving roller (1) is arranged on one side of the fabric in the width direction, the second driving roller (2) is arranged on the other side of the fabric in the width direction, the plurality of correcting rollers are arranged in front of the first driving roller (1) and the second driving roller (2) along the fabric running route, the detection mechanism is arranged in front of and/or behind the first driving roller (1) and the second driving roller (2) along the fabric running route, and the first motor (3), the second motor (4), the driving mechanism and the detection mechanism are controlled by the central processing unit.

2. A fabric weft or fill and pattern finishing system according to claim 1, characterized in that: the first driving roller (1) and the second driving roller (2) are friction rollers with friction surfaces on the peripheries.

3. A fabric weft or fill and pattern finishing system according to claim 1, characterized in that: the fabric weft straightening or weft straightening and pattern straightening system also comprises an expanding mechanism for expanding the fabric, wherein the expanding mechanism is arranged in front of the first driving roller (1) and the second driving roller (2) along the running path of the fabric.

4. A fabric weft or fill and pattern finishing system according to claim 3, characterized in that: the expanding mechanism comprises a spiral expanding roller or a rubber expanding bending roller or a telescopic plate type expanding roller.

5. A fabric weft or fill and pattern finishing system according to claim 1, characterized in that: the fabric weft straightening or weft straightening and pattern straightening system further comprises a rack (5), wherein the first motor (3) is installed on a first supporting seat (6), the first supporting seat (6) is rotatably connected with the rack (5), and the first supporting seat (6) is driven to rotate by a first linear motion mechanism (7); the second motor (4) is installed on a second supporting seat (8), the second supporting seat (8) is rotatably connected with the rack (5), the second supporting seat (8) is driven to rotate by a second linear motion mechanism (9), and the first linear motion mechanism (7) and the second linear motion mechanism (9) are respectively controlled by the central processing unit.

6. A fabric weft or fill and pattern finishing system according to claim 1, characterized in that: a plurality of correction rollers include bending roller and/or straight roller, the bending roller includes roll surface and dabber, actuating mechanism includes third motor, fourth motor and fifth motor, the roll surface of bending roller is rotated by third motor drive, the dabber of bending roller is rotated by fourth motor drive, the correction skew of straight roller is by fifth motor drive, and third motor, fourth motor and fifth motor are controlled by central processing unit respectively.

7. A fabric weft or fill and pattern finishing system 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 connected with the central processing unit.

8. A fabric or pattern finishing system according to any one of claims 1 to 7, wherein: 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.

9. A fabric weft or pattern finishing method is characterized in that:

a. the detection mechanism is arranged in front of or behind the first driving roller (1) and the second driving roller (2) along the running path of the fabric, and 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 occurs, correcting the skewing/skew by adjusting the speed difference between the first driving roller (1) and the second driving roller (2); the method comprises the following steps that after the fabric passes through a first driving roller (1) and a second driving roller (2), the residual skewness/skew of patterns and the warp/bending of patterns are corrected by a correcting roller, and the method comprises the following specific steps:

c1, when one end of the weft yarn at the side of the first driving roller (1) lags behind the other end of the weft yarn at the side of the second driving roller (2), the central processing unit controls the speed of the first driving roller (1) to be higher than that of the second driving roller (2) and corrects the skewness/skew of the fabric;

c2, when one end of the weft yarn at the side of the first driving roller (1) is ahead of the other end of the weft yarn at the side of the second driving roller (2), the central processing unit controls the speed of the first driving roller (1) to be lower than that of the second driving roller (2) and corrects the skewness/skew of the fabric;

c3, after the fabric passes through the first driving roller and the second driving roller, the residual skewing/skew and the warp/bending of the weft are corrected by controlling the bending roller and/or the straight roller by the central processing unit;

b. the detection mechanism is arranged in front of and behind the first driving roller (1) and the second driving roller (2) along the running route of the fabric, and comprises the following steps:

A. a detection mechanism behind the first driving roller (1) and the second driving roller (2) collects weft yarns and flower shape conditions of running fabrics and transmits the collected data to a 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 occurs, correcting the skewing/skew by adjusting the speed difference between the first driving roller (1) and the second driving roller (2); the method comprises the following steps that after the fabric passes through a first driving roller (1) and a second driving roller (2), the residual skewness/skew of patterns and the warp/bending of patterns are corrected by a correcting roller, and the method comprises the following specific steps:

c1, when one end of the weft yarn at the side of the first driving roller (1) lags behind the other end of the weft yarn at the side of the second driving roller (2), the central processing unit controls the speed of the first driving roller (1) to be higher than that of the second driving roller (2) and corrects the skewness/skew of the fabric;

c2, when one end of the weft yarn at the side of the first driving roller (1) is ahead of the other end of the weft yarn at the side of the second driving roller (2), the central processing unit controls the speed of the first driving roller (1) to be lower than that of the second driving roller (2) and corrects the skewness/skew of the fabric;

c3, after the fabric passes through the first driving roller and the second driving roller, the residual skewing/skew and the warp/bending of the weft are corrected by controlling the bending roller and/or the straight roller by the central processing unit;

D. the detection mechanisms in front of the first driving roller (1) and the second driving roller (2) collect weft yarns and flower shapes of running fabrics and transmit the collected data to the 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. and C, when the central processing unit judges that the skewing of the weft, the bending of the weft, the skew of the flower shape and the bending of the flower shape exist after the step C, the central processing unit continuously controls the bending roller and/or the straight roller to correct.

10. A fabric weft or fill and pattern finishing method according to claim 9, characterized in that:

when the central processing unit controls the bending roller and/or the straight roller to correct residual skewing/skew of the weft and the skewing/skew of the weft, the central processing unit reduces an included angle between the first driving roller (1) and the second driving roller (2) to correct the skewing/skew of the weft.

Technical Field

The invention relates to a system and a method for correcting skewness, skew and bending of patterns of a fabric, in particular to a system 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 system which has the advantages of wide range of applicable textile types, low use cost, no damage to fabrics during correction, quick correction response, capability of performing correction control in real time, 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 weft straightening and pattern straightening system which comprises a correcting mechanism, a detecting mechanism and a central processing unit; the correcting mechanism comprises a first driving roller, a second driving roller and a plurality of correcting rollers, the first driving roller is driven by a first motor, the second driving roller is driven by a second motor, and the correcting rollers are driven by a driving mechanism; the first driving roller is arranged on one side of the fabric in the width direction, the second driving roller is arranged on the other side of the fabric in the width direction, the plurality of correcting rollers are arranged in front of the first driving roller and the second driving roller along the running path of the fabric, the detection mechanism is arranged in front of and/or behind the first driving roller and the second driving roller along the running path of the fabric, and the first motor, the second motor, the driving mechanism and the detection mechanism are controlled by the central processing unit.

In a preferred embodiment of the present invention, the first driving roller and the second driving roller are friction rollers having friction surfaces on outer peripheries thereof.

As a preferred embodiment of the present invention, the fabric weft finishing or pattern finishing system further comprises a spreading mechanism for spreading the fabric, the spreading mechanism being disposed in front of the first driving roller and the second driving roller along the running path of the fabric.

In a preferred embodiment of the present invention, the expanding mechanism includes a spiral expanding roller, a rubber expanding curved roller, or a telescopic plate expanding roller.

As a preferred embodiment of the present invention, the fabric weft straightening or pattern straightening system further comprises a frame, wherein the first motor is mounted on a first support base, the first support base is rotatably connected with the frame, and the first support base is driven by a first linear motion mechanism to rotate; the second motor is arranged on a second supporting seat, the second supporting seat is rotationally connected with the rack, the second supporting seat is driven to rotate by a second linear motion mechanism, and the first linear motion mechanism and the second linear motion mechanism are respectively controlled by the central processing unit.

As a preferred embodiment of the present invention, the plurality of straightening rollers include a bending roller and/or a straight roller, the bending roller includes a roller surface and a mandrel, the driving mechanism includes a third motor, a fourth motor and a fifth motor, the roller surface of the bending roller is driven by the third motor to rotate, the mandrel of the bending roller is driven by the fourth motor to rotate, the straightening offset of the straight roller is driven by the fifth motor, and the third motor, the fourth motor and the fifth motor are respectively controlled by the central processing unit.

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 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 the fabric weft straightening or weft straightening and pattern straightening method, wherein a, under the condition that a detection mechanism is arranged in front of or behind a first driving roller and a second driving roller along a fabric running route, 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 occurs, correcting the skewing/skew by adjusting the speed difference between the first driving roller and the second driving roller; the method comprises the following steps that the residual skewness/skew of patterns and the warp/curvature of patterns after the fabric passes through a first driving roller and a second driving roller are corrected by a correcting roller, and the method comprises the following specific steps:

c1, when one end of the weft yarn on the side of the first driving roller lags behind the other end of the weft yarn on the side of the second driving roller, the central processing unit controls the speed of the first driving roller to be higher than that of the second driving roller, and the skewness/skew of the weft yarn of the fabric is corrected;

c2, when one end of the weft yarn on the side of the first driving roller is ahead of the other end of the weft yarn on the side of the second driving roller, the central processing unit controls the speed of the first driving roller to be lower than that of the second driving roller, and the skewness/skew of the weft yarn of the fabric is corrected;

c3, after the fabric passes through the first driving roller and the second driving roller, the residual skewing/skew and the warp/bending of the weft are corrected by controlling the bending roller and/or the straight roller by the central processing unit;

b. the detection mechanism is arranged in front of and behind the first driving roller and the second driving roller along the running path of the fabric, and comprises the following steps:

A. the detecting mechanisms behind the first driving roller and the second driving roller collect weft yarn and flower shape conditions of the running fabric and transmit 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 occurs, correcting the skewing/skew by adjusting the speed difference between the first driving roller and the second driving roller; the method comprises the following steps that the residual skewness/skew of patterns and the warp/curvature of patterns after the fabric passes through a first driving roller and a second driving roller are corrected by a correcting roller, and the method comprises the following specific steps:

c1, when one end of the weft yarn on the side of the first driving roller lags behind the other end of the weft yarn on the side of the second driving roller, the central processing unit controls the speed of the first driving roller to be higher than that of the second driving roller, and the skewness/skew of the weft yarn of the fabric is corrected;

c2, when one end of the weft yarn on the side of the first driving roller is ahead of the other end of the weft yarn on the side of the second driving roller, the central processing unit controls the speed of the first driving roller to be lower than that of the second driving roller, and the skewness/skew of the weft yarn of the fabric is corrected;

c3, after the fabric passes through the first driving roller and the second driving roller, the residual skewing/skew and the warp/bending of the weft are corrected by controlling the bending roller and/or the straight roller by the central processing unit;

D. the detection mechanisms in front of the first driving roller and the second driving roller collect weft yarns and flower shapes of running fabrics and transmit the collected data to the 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. and C, when the central processing unit judges that the skewing of the weft, the bending of the weft, the skew of the flower shape and the bending of the flower shape exist after the step C, the central processing unit continuously controls the bending roller and/or the straight roller to correct.

As a preferred embodiment of the present invention, while the central processing unit controls the bending roller and/or the straight roller to correct the residual skew/skew and the warp/bow, the central processing unit reduces the included angle between the first driving roller and the second driving roller to correct the warp/bow.

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 driving roller and a second driving roller on two sides of the fabric in the width direction, the first driving roller is driven by a first motor to rotate, the second driving 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 invention works, the central processing unit respectively and precisely adjusts and controls the rotating speed of the first driving roller and the rotating speed of the second driving roller according to the detection data of a detection mechanism, namely the rotating speed of the first driving roller is different from the rotating speed of the second driving roller, the first driving roller and the second driving roller have speed difference, the central processing unit obtains the fabric distortion state through the detection data, corrects the skewness/skew of the weft by adjusting the rotating speed of the first driving roller to be larger or smaller than the rotating speed of the second driving roller in real time, and the central processing unit controls the conventional residual skewness/skew of the weft and the warp/skew of the weft after the fabric passes through the first driving roller and the second driving roller The invention has simple correcting structure, short adjusting stroke, quick system response, high correcting precision and good correcting effect, and is beneficial to real-time correction.

The first driving roller and the second driving roller are friction rollers with friction surfaces on the peripheries, for example, rollers with larger friction coefficients on the peripheral surfaces or rollers with rubber rough surfaces coated on the peripheral surfaces, and the like.

According to the invention, the spreading mechanisms such as the spiral spreading rollers and the like are arranged in front of the first driving roller and the second driving roller, 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 driving roller and the second driving 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 when correcting, 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 diagram of a fabric weft or pattern finishing system according to the present invention.

FIG. 2 is a schematic front view of a fabric weft or fill and pattern system of the present invention.

FIG. 3 is a schematic view of the fabric weft or pattern finishing system of the present invention in an operating condition.

3 fig. 3 4 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 along 3 a 3- 3 a 3 in 3 fig. 3 3 3. 3

Fig. 5 is a schematic top view of the first support base rotated by the first linear motion mechanism and the second support base rotated by the second linear motion mechanism according to the present invention.

Fig. 6 is a schematic structural diagram of the first driving roller and the second driving roller of the present invention.

FIG. 7 is another schematic structural diagram of the first driving roller and the second driving roller of the present invention.

Detailed Description

A fabric weft straightening or pattern straightening system shown in fig. 1 to 7 comprises a correcting mechanism, a detecting mechanism 14 and a central processing unit; the correcting mechanism comprises a first driving roller 1, a second driving roller 2 and a plurality of correcting rollers 10, wherein the first driving roller 1 is driven by a first motor 3, the second driving roller 2 is driven by a second motor 4, and the plurality of correcting rollers 10 are driven by a driving mechanism; as another embodiment, the outer rotor of the first motor 3 can also be used as the first driving roller 1, the outer rotor of the second motor 4 can also be used as the second driving roller 2, the first driving roller 1 is disposed on one side of the fabric 15 in the width direction as shown in the left side, and the second driving roller 2 is disposed on the other side of the fabric 15 in the width direction as shown in the right side, in the present invention, the first driving roller 1 and the second driving roller 2 are preferably horizontally disposed in a right-to-face manner on both sides of the fabric 15 in the width direction, i.e. symmetrically and horizontally disposed along the length direction of the fabric 15, during operation, the fabric 15 preferably covers part of the outer peripheral surfaces of the first driving roller 1 and the second driving roller 2, of course, the first driving roller 1 and the second driving roller 2 can also only fit with the fabric 15, in addition, the first driving roller 1 and the second driving roller 2 can also not be horizontally disposed, the straightening rollers 10 are arranged in front of the first driving roller 1 and the second driving roller 2 along the running path of the fabric, the detecting mechanism 14 is arranged in front of and/or behind the first driving roller 1 and the second driving roller 2 along the running path of the fabric, and the first motor 3, the second motor 4, the driving mechanism and the detecting mechanism 14 are controlled by a central processing unit (not shown). In the invention, the first driving roller wheel 1 and the second driving roller wheel 2 comprise axially longer rollers as shown in fig. 6, and also comprise axially shorter rollers as shown in fig. 7; the first motor 3, the second motor 4, the driving mechanism and the detecting mechanism 14 may be electrically connected to the central processing unit through cables in a wired manner, or may be electrically connected to the central processing unit through wireless signals in a wireless manner, so as to be controlled by the central processing unit. The detecting mechanism 14 is disposed in front of the first driving roller 1 and the second driving roller 2 along the running path of the fabric, including between the first driving roller 1 and the second driving roller 2 and the straightening rollers 10, not shown in the figure.

In a preferred embodiment of the present invention, the first driving roller 1 and the second driving roller 2 are friction rollers having friction surfaces on the outer peripheries thereof, and for example, commercially available friction rollers having a large friction coefficient on the outer peripheral surfaces thereof, such as rubber surfaces, metal friction rollers, needle-faced rollers with needles, or friction rollers having rubber rough surfaces or fur-pricked surfaces coated on the outer peripheries thereof are used. The diameter of the roller is preferably 20-450 mm.

As a preferred embodiment of the present invention, as shown in fig. 4, the fabric finishing or pattern finishing system further comprises a spreading mechanism 11 for spreading the fabric, wherein the spreading mechanism 11 is arranged in front of the first driving roller 1 and the second driving roller 2 along the running path of the fabric. The spreading mechanism 11 is shown in the figure to be located in front of the leveling rollers 10. in the present invention, the spreading mechanism 11 can also be located between the first driving roller 1, the second driving roller 2 and the leveling rollers 10, not shown in the figure.

In a preferred embodiment of the present invention, the spreading mechanism 11 includes a commercially available conventional spiral spreading roll, a rubber spreading roll, a telescopic plate type spreading roll, or the like. The spreading mechanism 11 may be an actively rotating spreading mechanism driven by a motor, or may be a freely rotating, i.e. passively rotating, spreading mechanism without power drive.

As a preferred embodiment of the present invention, as shown in fig. 1 to 5, the fabric weft straightening or pattern straightening system further comprises a frame 5, the first motor 3 is fixedly mounted on a first support base 6 through a bolt, the first support base 6 is rotatably connected with the frame 5 through a first short shaft 12, and the first support base 6 is driven to rotate by a first linear motion mechanism 7; the second motor 4 is fixedly mounted on a second supporting seat 8 through bolts, the second supporting seat 8 is rotatably connected with the rack 5 through a second short shaft 13, the second supporting seat 8 is driven to rotate by a second linear motion mechanism 9, and the first linear motion mechanism 7 and the second linear motion mechanism 9 are respectively controlled by the central processing unit. In the invention, the first linear motion mechanism 7 and the second linear motion mechanism 9 can be linear motors with screw-nut mechanisms, and can also be cylinders, electric push rods and the like, when the device works, the central processing unit respectively controls the first supporting seat 6 and the second supporting seat 8 to rotate through the first linear motion mechanism 7 and the second linear motion mechanism 9, and the first motor 3 and the second motor 4 which are respectively arranged on the first supporting seat 6 and the second supporting seat 8, and the first driving roller 1 and the second driving roller 2 rotate along with the first linear motion mechanism and the second linear motion mechanism.

As a preferred embodiment of the present invention, as shown in fig. 1 and 4, the plurality of straightening rollers 10 include a commercially available conventional bending roller 10a and/or a straight roller 10b, the bending roller 10a includes a roller surface and a mandrel, the driving mechanism includes a third motor, a fourth motor and a fifth motor, the roller surface of the bending roller 10a is driven to rotate by the third motor, the mandrel of the bending roller 10a is driven to rotate by the fourth motor, the straightening offset of the straight roller 10b is driven by the fifth motor, preferably, by a screw-nut pair linear transmission mechanism, the third motor, the fourth motor and the fifth motor are respectively controlled by a central processing unit, and the roller surface of the bending roller 10a can also be driven by no motor and driven to rotate, not shown in the figures.

In a preferred embodiment of the present invention, the detection means 14 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 finishing the weft or pattern of a fabric, which is shown in figures 3 and 4,

a. the detecting mechanism 14 is arranged in front of or behind the first driving roller 1 and the second driving roller 2 along the running path of the fabric, and comprises the following steps:

A. the detection mechanism 14 collects the weft yarn and the flower shape of the fabric 15 in operation and transmits the collected data to the central processing unit; the detection mechanism 14 is preferably an industrial camera, such as a line camera or an area camera, and during the moving process of the fabric 15, firstly, the industrial camera collects the whole continuous weft yarn/flower shape image of the fabric 15, collects the whole weft yarn/whole flower shape image on the moving fabric 15 on line in real time, ensures the accuracy of fabric weft yarn/flower shape collection, 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 14, and judges whether the skewing, the bending, the skew 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 occurs, correcting the skewing/skew by adjusting the speed difference between the first driving roller 1 and the second driving roller 2; the method comprises the following steps that after a fabric runs through a first driving roller 1 and a second driving roller 2, the residual skewness/skew of patterns and the warp/bending of patterns are corrected by a correcting roller, and the method comprises the following specific steps:

c1, when one end of the weft yarn at the first driving roller 1 side lags behind the other end of the weft yarn at the second driving roller 2 side, the central processing unit controls the speed of the first driving roller 1 to be higher than that of the second driving roller 2, and the skewness/skew of the weft yarn of the fabric is corrected;

c2, when one end of the weft yarn at the first driving roller 1 side is ahead of the other end of the weft yarn at the second driving roller 2 side, the central processing unit controls the speed of the first driving roller 1 to be lower than that of the second driving roller 2, and the skewness/skew of the weft yarn of the fabric is corrected;

c3, after the fabric passes through the first driving roller 1 and the second driving roller 2, the residual skewing/skew of the weft and the bending/bending of the weft are corrected by controlling the bending roller and/or the straight roller by the central processing unit through a conventional known means, specifically, the central processing unit controls the bending roller 10a and the straight roller 10b to be in corresponding correction states through a third motor, a fourth motor and a fifth motor respectively, and the residual skewing/skew of the weft and the bending/bending of the weft are corrected;

b. in the case where the detecting mechanism 14 is disposed in front of and behind the first driving roller 1 and the second driving roller 2 along the running path of the fabric, referring to fig. 4, it comprises the steps of:

A. a detection mechanism 14 behind the first driving roller 1 and the second driving roller 2 collects weft yarns and flower shapes of running fabrics and transmits the collected data to a central processing unit; the detection mechanism 14 is preferably an industrial camera, such as a line camera or an area camera, and during the moving process of the fabric 15, firstly, the industrial camera collects the whole continuous weft yarn/flower shape image of the fabric 15, collects the whole weft yarn/whole flower shape image on the moving fabric 15 on line in real time, ensures the accuracy of fabric weft yarn/flower shape collection, and transmits the collected whole weft yarn/whole flower shape image to the central processing unit in time;

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; 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 occurs, correcting the skewing/skew by adjusting the speed difference between the first driving roller 1 and the second driving roller 2; the method comprises the following steps that after a fabric runs through a first driving roller 1 and a second driving roller 2, the residual skewness/skew of patterns and the warp/bending of patterns are corrected by a correcting roller, and the method comprises the following specific steps:

c1, when one end of the weft yarn at the first driving roller 1 side lags behind the other end of the weft yarn at the second driving roller 2 side, the central processing unit controls the speed of the first driving roller 1 to be higher than that of the second driving roller 2, and the skewness/skew of the weft yarn of the fabric is corrected;

c2, when one end of the weft yarn at the first driving roller 1 side is ahead of the other end of the weft yarn at the second driving roller 2 side, the central processing unit controls the speed of the first driving roller 1 to be lower than that of the second driving roller 2, and the skewness/skew of the weft yarn of the fabric is corrected;

c3, after the fabric passes through the first driving roller 1 and the second driving roller 2, the residual skewing/skew of the weft and the bending/bending of the weft are corrected by controlling the bending roller and/or the straight roller by the central processing unit through a conventional known means, specifically, the central processing unit controls the bending roller 10a and the straight roller 10b to be in corresponding correction states through a third motor, a fourth motor and a fifth motor respectively, and the residual skewing/skew of the weft and the bending/bending of the weft are corrected;

D. the detection mechanism 14 in front of the first driving roller 1 and the second driving roller 2 collects weft yarn and flower shape conditions of the running fabric and transmits the collected data to the central processing unit; the detection mechanism 14 is preferably an industrial camera which collects the whole weft yarn/whole flower-shaped image on the moving fabric 15 on line in real time and transmits the collected whole weft yarn/whole flower-shaped image to the central processing unit in time;

E. c, the central processing unit receives and processes the data of the detection mechanism in the step D, and judges whether the fabric 15 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 weft skew, weft bending, flower shape skew and flower shape bending still exist in the fabric 15 after the step C;

F. and C, when the central processing unit judges that skew filling, warp filling, skew pattern and warp pattern exist after the step C, the central processing unit continuously controls the bending roller and/or the straight roller to correct through a conventional known means, specifically, the central processing unit respectively controls the bending roller 10a and the straight roller 10b to be in corresponding correction states through a third motor, a fourth motor and a fifth motor, and continuously corrects the residual skew filling/warp pattern and warp pattern.

As a preferred embodiment of the present invention, while the central processing unit controls the bending roller 10a and/or the straight roller 10b to correct the residual skewness/skew of weft and the skewness/skew of weft, the central processing unit reduces the included angle between the axial lines of the first driving roller 1 and the second driving roller 2, so as to increase the fabric radial tension appropriately and correct the warp/skew of weft, and certainly, when the included angle between the two is too small, the included angle between the axial lines of the two is increased to reduce the fabric radial tension, thereby meeting the process requirements; specifically, the central processing unit respectively controls a first supporting seat 6 and a second supporting seat 8 to rotate through a first linear motion mechanism 7 and a second linear motion mechanism 9, so that a first driving roller 1 and a second driving roller 2 rotate along with the first supporting seat and the second supporting seat, and the weft bending/flower-shaped bending is corrected by changing the optimal selection and properly reducing the included angle a between the axial lines of the first driving roller 1 and the second driving roller 2.

Through tests, the method has the advantages of wide range of applicable textile types, 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 yield and good effect.