阅读说明：本技术 织物整纬或整纬整花装置及方法 (Fabric weft straightening or weft straightening and pattern straightening device 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装置及方法,装置包括矫正机构、检测机构和中央处理单元；矫正机构包括第一摩擦辊轮和第二摩擦辊轮,第一摩擦辊轮、第二摩擦辊轮的外周均具有摩擦面,第一摩擦辊轮由第一电机驱动,第二摩擦辊轮由第二电机驱动,第一摩擦辊轮置于织物幅向的一边,第二摩擦辊轮置于织物幅向的另一边,检测机构沿织物运行路线置于矫正机构的前方和/或后方,第一电机、第二电机及检测机构由中央处理单元控制。该装置还包括用于织物扩幅的扩幅机构,扩幅机构沿织物运行路线置于矫正机构的前方。本发明结构简单,使用成本低,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,适用纺织品种类范围广。(The invention discloses a device and a method for weft straightening or weft straightening and pattern straightening of a fabric, wherein the device comprises a correcting mechanism, a detecting mechanism and a central processing unit; the straightening mechanism comprises a first friction roller and a second friction roller, the peripheries of the first friction roller and the second friction roller are provided with friction surfaces, the first friction roller is driven by a first motor, the second friction roller is driven by a second motor, the first friction roller is arranged on one side of the fabric in the radial direction, the second friction roller is arranged on the other side of the fabric in the radial direction, a detection mechanism is arranged in front of and/or behind the straightening mechanism along the running route of the fabric, and the first motor, the second motor and the detection mechanism are controlled by a central processing unit. The device also comprises a spreading mechanism for spreading the fabric, wherein the spreading mechanism is arranged in front of the straightening mechanism along the running path of the fabric. 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.)

1. A fabric weft or pattern finishing device is characterized in that: comprises a correction mechanism, a detection mechanism and a central processing unit; the straightening mechanism comprises a first friction roller (1) and a second friction roller (2), the peripheries of the first friction roller (1) and the second friction roller (2) are provided with friction surfaces, the first friction roller (1) is driven by a first motor (3), the second friction roller (2) is driven by a second motor (4), the first friction roller (1) is arranged on one side of the fabric in the width direction, the second friction roller (2) is arranged on the other side of the fabric in the width direction, the detection mechanism is arranged in front and/or rear of the straightening mechanism along the running path of the fabric, and the first motor (3), the second motor (4) and the detection mechanism are controlled by a central processing unit.

2. A fabric weft or fill and pattern finishing apparatus according to claim 1, wherein: the fabric weft straightening or weft straightening and pattern straightening device further comprises a width expanding mechanism for expanding the fabric, wherein the width expanding mechanism is arranged in front of the correcting mechanism along the running path of the fabric.

3. A fabric weft or fill and pattern finishing apparatus according to claim 2, wherein: the expanding mechanism comprises a spiral expanding roller or a rubber expanding bending roller or a telescopic plate type expanding roller.

4. A fabric weft or fill and pattern finishing apparatus according to claim 1, wherein: the fabric weft straightening or weft straightening and pattern straightening device 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.

5. A fabric weft or fill and pattern finishing apparatus according to claim 1, wherein: 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.

6. A fabric weft or fill and pattern finishing device according to any one of claims 1 to 5, 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.

7. 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 appears, correcting skewing/skew appears by adjusting the speed difference between the first friction roller (1) and the second friction roller (2), and the method comprises the following specific steps:

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

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

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 appears, correcting skewing/skew appears by adjusting the speed difference between the first friction roller (1) and the second friction roller (2), and the method comprises the following specific steps:

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

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

D. the detection mechanism in front of the correction mechanism collects weft yarn and flower shape conditions of running fabric and transmits 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 skew filling/flower shape skew exists after the step C, correcting and adjusting the speed difference between the first friction roller (1) and the second friction roller (2) to correct the skew filling/flower shape skew, and the specific steps are as follows:

f1, when one end of the weft yarn at the side of the first friction roller (1) lags behind the other end of the weft yarn at the side of the second friction roller (2), the central processing unit continuously controls the speed of the first friction roller (1) to be higher than that of the second friction roller (2) and corrects the skewness/skew of the weft yarn of the fabric;

f2, when one end of the weft yarn on the first friction roller (1) side is ahead of the other end of the weft yarn on the second friction roller (2) side, the central processing unit continuously controls the speed of the first friction roller (1) to be lower than that of the second friction roller (2) so as to correct the skewness/skew of the weft yarn of the fabric.

8. A fabric weft or fill and pattern finishing method according to claim 7, characterized in that:

when the central processing unit judges that the weft bending/flower-shaped bending occurs, the central processing unit controls and reduces an included angle between the first friction roller (1) and the second friction roller (2), and the weft bending/flower-shaped bending is corrected by adjusting the fabric radial tension.

Technical Field

The invention relates to a device and a method for correcting skewness, skew and bending of patterns of a fabric, in particular to a device 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 device which has the advantages of wide range of applicable textile types, simple structure, low use cost, no damage to the fabric during the straightening, quick straightening response, capability of performing straightening control in real time, high straightening precision and good straightening effect on local deformation such as sewing head 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 device which comprises a correcting mechanism, a detecting mechanism and a central processing unit; the straightening mechanism comprises a first friction roller and a second friction roller, the peripheries of the first friction roller and the second friction roller are provided with friction surfaces, the first friction roller is driven by a first motor, the second friction roller is driven by a second motor, the first friction roller is arranged on one side of the fabric in the width direction, the second friction roller is arranged on the other side of the fabric in the width direction, the detection mechanism is arranged in front of and/or behind the straightening mechanism along the running path of the fabric, and the first motor, the second motor and the detection mechanism are controlled by a central processing unit.

As a preferred embodiment of the invention, the fabric weft finishing or weft finishing and pattern finishing device further comprises a spreading mechanism for spreading the fabric, the spreading mechanism being arranged in front of the straightening mechanism 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 device 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.

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 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 appears, correcting skewing/skew appears by adjusting the speed difference between the first friction roller and the second friction roller, and the method comprises the following specific steps:

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

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 appears, correcting skewing/skew appears by adjusting the speed difference between the first friction roller and the second friction roller, and the method comprises the following specific steps:

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

D. the detection mechanism in front of the correction mechanism collects weft yarn and flower shape conditions of running fabric and transmits 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 skew filling/flower shape deflection exists after the step C, correcting and adjusting the speed difference between the first friction roller and the second friction roller, and correcting the skew filling/flower shape deflection, wherein the specific steps are as follows:

f1, when one end of the weft yarn on the side of the first friction roller lags behind the other end of the weft yarn on the side of the second friction roller, the central processing unit continuously controls the speed of the first friction roller to be higher than that of the second friction roller, and the skewness/skew of the weft yarn of the fabric is corrected;

f2, when one end of the weft yarn on the side of the first friction roller is ahead of the other end of the weft yarn on the side of the second friction roller, the central processing unit continuously controls the speed of the first friction roller to be lower than that of the second friction roller, and the skewness/flower shape skew of the fabric is corrected.

As a preferred embodiment of the invention, when the central processing unit judges that the weft bending/flower bending occurs, the central processing unit controls to reduce the included angle between the first friction roller and the second friction roller, and corrects the weft bending/flower bending by adjusting the fabric radial tension.

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 friction roller and a second friction roller on two sides of the fabric in the width direction, the first friction roller is driven by a first motor to rotate, the second friction roller is driven by a second motor to rotate, the first motor and the second motor are respectively and independently 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 friction roller and the rotating speed of the second friction roller according to the detection data of a detection mechanism, namely the rotating speed of the first friction roller is different from the rotating speed of the second friction roller, the first friction roller and the second friction roller have a speed difference, the central processing unit obtains the fabric distortion state according to the detection data, and corrects the fabric distortion by adjusting the rotating speed of the first friction roller to be larger than or smaller than the rotating speed of the second friction roller in real time, the invention has simple correcting structure, short adjusting stroke, quick system response, is beneficial to real-time correction, the correction effect is good.

Compared with the pinwheel in the prior art, the first friction roller and the second friction roller have the advantages that the volume is greatly reduced, even the volume is only one tenth of that of the pinwheel, the occupied space is extremely small, the processing is simple and convenient, and the use cost is low.

The invention arranges the expanding mechanism such as a spiral expanding roller in front of the correcting mechanism, thus further stabilizing and improving the quality of the corrected fabric and ensuring more stable and reliable product quality.

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 first friction roller and the second friction roller are adopted, so that the fabric with a loose structure, high extensibility and high possibility of deformation can be effectively corrected, the range of applicable textile types is wide, the fabric is not damaged at all during correction, the correction response is fast, and the correction control can be performed 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 device according to the present invention.

Fig. 2 is a schematic top view of the first support base driven by the first linear motion mechanism and the second support base driven by the second linear motion mechanism according to the present invention, without the detection mechanism.

Fig. 3 is a schematic structural diagram of the first friction roller and the second friction roller of the present invention.

Fig. 4 is another schematic structural diagram of the first friction roller and the second friction roller in the present invention.

Detailed Description

A fabric weft straightening or pattern straightening device shown in fig. 1 to 4 comprises a correcting mechanism, a detecting mechanism 10 and a central processing unit; the straightening mechanism comprises a first friction roller 1 and a second friction roller 2, the peripheries of the first friction roller 1 and the second friction roller 2 are respectively provided with a friction surface, the first friction roller 1 and the second friction roller 2 can adopt a commercially available friction roller with a larger friction coefficient on the peripheral surface, such as a rubber surface, or a metal friction roller or a needle surface roller with needles, or adopt a friction roller with a rubber rough surface or a fur or the like coated on the peripheral surface, the diameter of the roller is preferably 20-450 mm, the first friction roller 1 is driven by a first motor 3, the second friction roller 2 is driven by a second motor 4, in the invention, the first friction roller 1 can be driven by the first motor 3 through a speed reducer to rotate, or can be directly driven by the first motor 3 through an output shaft thereof to rotate, and the second friction roller 2 can be driven by the second motor 4 through the speed reducer to rotate, or can be directly driven by the second motor 4 through the output shaft thereof to rotate; as another embodiment, the outer rotor of the first motor 3 can also be used as the first friction roller 1, the outer rotor of the second motor 4 can also be used as the second friction roller 2, the first friction roller 1 is disposed on one side of the fabric 14 in the width direction as shown in the left side in the figure, and the second friction roller 2 is disposed on the other side of the fabric 14 in the width direction as shown in the right side in the figure, in the present invention, the first friction roller 1 and the second friction roller 2 are preferably horizontally disposed in a right-to-face manner on both sides of the fabric 14 in the width direction, that is, symmetrically and horizontally disposed along the length direction of the fabric 14, in operation, the fabric 14 preferably covers part of the outer peripheral surfaces of the first friction roller 1 and the second friction roller 2, of course, the first friction roller 1 and the second friction roller 2 can also only fit with the fabric 14 for operation, in addition, the first friction roller 1 and the second friction roller 2 can also not be horizontally, but is arranged inclined at an angle in the vertical direction or slightly inclined, etc., said detecting means 10 being placed in front of and/or behind the straightening means along the running path of the fabric, said first motor 3, second motor 4 and detecting means 10 being controlled by a central processing unit, not shown in the figure. In the invention, the first friction roller wheel 1 and the second friction roller wheel 2 comprise axially longer rollers as shown in fig. 3, and also comprise axially shorter wheels as shown in fig. 4; the first motor 3, the second motor 4 and the detection mechanism 10 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 invention, as shown in fig. 1 and 2, the fabric weft straightening or pattern straightening device further comprises a widening mechanism 11 for widening the fabric, wherein the widening mechanism 11 is arranged in front of the straightening mechanism along the running path of the fabric.

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 and 2, the fabric weft straightening or pattern straightening device further comprises a frame 5, wherein 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 friction roller 1 and the second friction roller 2 rotate along with the first linear motion mechanism and the second linear motion mechanism.

In a preferred embodiment of the present invention, the detection means 10 includes an industrial camera, a camera light source, a photodetection sensor, and the like, only the industrial camera is shown in the figure, and the photodetection sensor is not shown in the figure, 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 1 and 2,

a. in the case where the detecting means 10 is placed in front of or behind the straightening means along the running path of the fabric 14, the following steps are included:

A. the detection mechanism 10 collects the weft yarn and flower shape conditions of the fabric 14 in operation and transmits the collected data to the central processing unit; the detecting mechanism 10 is preferably an industrial camera, such as a line camera or an area camera, and during the moving process of the fabric 14, firstly, the industrial camera collects the whole continuous weft yarn/flower shape image of the fabric 14, collects the whole weft yarn/whole flower shape image on the moving fabric 14 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 10, 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 appears, correcting skewing/skew appears by adjusting the speed difference between the first friction roller 1 and the second friction roller 2, and the method comprises the following specific steps:

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

b. in the case where the detecting means 10 are placed in front of and behind the straightening means along the running path of the fabric 14, the following steps are included:

A. a detection mechanism 10 behind the correction mechanism collects weft yarn and flower shape conditions of a running fabric 14 and transmits the collected data to a central processing unit; the detecting mechanism 10 is preferably an industrial camera, such as a line camera or an area camera, and during the moving process of the fabric 14, firstly, the industrial camera collects the whole continuous weft yarn/flower shape image of the fabric 14, collects the whole weft yarn/whole flower shape image on the moving fabric 14 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 10 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 appears, correcting skewing/skew appears by adjusting the speed difference between the first friction roller 1 and the second friction roller 2, and the method comprises the following specific steps:

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

D. the detection mechanism 10 in front of the correction mechanism collects the weft yarn and flower shape conditions of the running fabric 14 and transmits the collected data to the central processing unit; the detection mechanism 10 is preferably an industrial camera which collects the whole weft yarn/whole flower-shaped image on the moving fabric 14 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 14 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 14 has weft skew, weft bending, flower shape skew and flower shape bending after the step C;

F. and C, when the central processing unit judges that skew filling/flower shape deflection exists after the step C, correcting and adjusting the speed difference between the first friction roller 1 and the second friction roller 2, and correcting the skew filling/flower shape deflection, wherein the specific steps are as follows:

f1, when one end of the weft yarn at the first friction roller 1 side lags behind the other end of the weft yarn at the second friction roller 2 side, the central processing unit continuously controls the speed of the first friction roller 1 to be higher than that of the second friction roller 2, and the skewness/skew of the weft yarn of the fabric is corrected;

f2, when one end of the weft yarn on the first friction roller 1 side is ahead of the other end of the weft yarn on the second friction roller 2 side, the central processing unit continuously controls the speed of the first friction roller 1 to be lower than that of the second friction roller 2, and the skewness/the skew of the weft yarn of the fabric is corrected.

As a preferred embodiment of the invention, when the central processing unit judges that the weft bending/flower bending occurs, the central processing unit controls to reduce the included angle between the axial lines of the first friction roller 1 and the second friction roller 2, so that the fabric radial tension can be properly increased, and the weft bending/flower bending can be corrected by adjusting the fabric radial tension. Certainly, when the included angle between the two fabrics is too small, the radial tension of the fabrics is reduced by increasing the included angle between the axial leads of the two fabrics, and the process requirements are met. Specifically, the central processing unit respectively controls a first bearing seat 6 and a second bearing seat 8 to rotate through a first linear motion mechanism 7 and a second linear motion mechanism 9, so that a first friction roller 1 and a second friction roller 2 rotate along with the first linear motion mechanism, and the weft bending/flower-shaped bending is corrected by changing the optimal selection to properly reduce the included angle a between the axial leads of the first friction roller 1 and the second friction 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.