Fabric weft straightening or weft straightening and pattern straightening device and method
阅读说明：本技术 一种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,织物整纬或整纬整花装置包括中央处理单元、检测机构以及设置在织物幅向一侧且能主动调整该侧织物运行速度的矫正机构；所述检测机构沿织物运行路线置于矫正机构的前方和/或后方,所述检测机构、矫正机构由中央处理单元控制。所述矫正机构包括外周具有摩擦面的摩擦辊轮(1)和电机(2),所述摩擦辊轮(1)由电机(2)驱动,所述电机(2)由中央处理单元控制。所述矫正机构包括机械手(3),所述机械手(3)由中央处理单元控制。本发明适用纺织品种类范围广,结构更简单,使用成本更低,矫正时对织物无损伤,矫正响应快,能实时进行矫正控制,并且矫正精度高、效果好。(The invention discloses a fabric weft straightening or weft straightening and pattern trimming device and a method, wherein the fabric weft straightening or weft straightening and pattern trimming device comprises a central processing unit, a detection mechanism and a correction mechanism which is arranged on one side of the fabric in the radial direction and can actively adjust the running speed of the fabric on the side; the detection mechanism is arranged in front of and/or behind the correction mechanism along the running route of the fabric, and the detection mechanism and the correction mechanism are controlled by the central processing unit. The straightening mechanism comprises a friction roller (1) with a friction surface on the periphery and a motor (2), the friction roller (1) is driven by the motor (2), and the motor (2) is controlled by a central processing unit. The straightening mechanism comprises a manipulator (3), and the manipulator (3) is controlled by a central processing unit. The invention has the advantages of wide range of applicable textile types, simpler structure, lower use cost, 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 device is characterized in that: comprises a central processing unit, a detection mechanism and a correction mechanism which is arranged on one lateral side of the fabric in the width direction and can actively adjust the running speed of the fabric on the lateral side; the detection mechanism is arranged in front of and/or behind the correction mechanism along the running route of the fabric, and the detection mechanism and the correction mechanism are controlled by the central processing unit.
2. A fabric weft or fill and pattern finishing apparatus according to claim 1, wherein: the straightening mechanism comprises a friction roller (1) with a friction surface on the periphery and a motor (2), the friction roller (1) is driven by the motor (2), and the motor (2) is controlled by a central processing unit.
3. A fabric weft or fill and pattern finishing apparatus according to claim 1, wherein: the straightening mechanism comprises a manipulator (3), and the manipulator (3) is controlled by a central processing unit.
4. A fabric weft or fill and pattern finishing apparatus according to claim 1, wherein: the fabric weft straightening or weft straightening and pattern finishing device further comprises a width expanding mechanism (4) for expanding the fabric, wherein the width expanding mechanism (4) is arranged in front of the correcting mechanism along the running path of the fabric.
5. A fabric weft or fill and pattern finishing apparatus according to claim 4, wherein: the expanding mechanism (4) comprises a spiral expanding roller or a rubber expanding bending roller or a telescopic plate type expanding roller.
6. 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.
7. A fabric or pattern finishing device according to any one of claims 1 to 6, 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.
8. A fabric weft or pattern finishing method is characterized in that:
a. in the case where the detection means are placed in front of or behind the straightening means along the path of travel of the fabric, the following steps are included:
A. the detection mechanism collects weft yarn and pattern 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 filling/pattern skew occurs or not;
C. when the central processing unit judges that skew weft/pattern skew occurs, the running speed of the fabric on the self side is actively adjusted through the correcting mechanism to correct the skew weft/pattern skew, and the correction method specifically comprises the following steps:
c1, when one end of the weft yarn at the correcting mechanism side lags behind the other end of the weft yarn at the opposite side, the central processing unit controls the correcting mechanism to actively increase the running speed of the fabric at the correcting mechanism side and correct the skew weft/pattern of the fabric;
c2, when one end of the weft yarn on the correcting mechanism side is ahead of the other end of the weft yarn on the opposite side, the central processing unit controls the correcting mechanism to actively reduce the running speed of the fabric on the correcting mechanism side and correct the skew weft/pattern 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 pattern 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 skew filling/pattern skew occurs or not;
C. when the central processing unit judges that skew weft/pattern skew occurs, the running speed of the fabric on the self side is actively adjusted through the correcting mechanism to correct the skew weft/pattern skew, and the correction method specifically comprises the following steps:
c1, when one end of the weft yarn at the correcting mechanism side lags behind the other end of the weft yarn at the opposite side, the central processing unit controls the correcting mechanism to actively increase the running speed of the fabric at the correcting mechanism side and correct the skew weft/pattern of the fabric;
c2, when one end of the weft yarn on the correcting mechanism side is ahead of the other end of the weft yarn on the opposite side, the central processing unit controls the correcting mechanism to actively reduce the running speed of the fabric on the correcting mechanism side and correct the skew weft/pattern of the fabric;
D. a detection mechanism in front of the correction mechanism collects weft yarn and pattern conditions of the running fabric and transmits the collected data to a central processing unit;
E. c, the central processing unit receives and processes the data of the detection mechanism in the step D, and judges whether the fabric has skew filling/pattern skew after the fabric passes through the step C;
F. and C, when the central processing unit judges that skew weft/pattern exists after the step C, the central processing unit continuously actively increases or reduces the running speed of the fabric on the same side of the central processing unit through the correcting mechanism to correct the skew weft/pattern, and the method specifically comprises the following steps:
f1, when one end of the weft yarn at the correcting mechanism side lags behind the other end of the weft yarn at the opposite side, the central processing unit controls the correcting mechanism to continuously and actively increase the running speed of the fabric at the correcting mechanism side, and the skew/pattern skew correction of the fabric is executed;
f2, when one end of the weft yarn on the correcting mechanism side is ahead of the other end of the weft yarn on the opposite side, the central processing unit controls the correcting mechanism to continuously and actively reduce the running speed of the fabric on the correcting mechanism side, and the skew/pattern skew correction of the fabric is executed.
Technical Field
The invention relates to a device and a method for correcting fabric deformation, in particular to a device and a method for finishing weft or pattern of fabric, belonging 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, pattern skew 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 and style of the textile surface and the basic organization structure, improve the use value of the textiles 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, simpler structure, low use cost, no damage to the fabric during correction, high correction response speed, capability of performing correction control in real time, high correction precision and good correction 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 pattern straightening device which comprises a central processing unit, a detection mechanism and a correction mechanism, wherein the correction mechanism is arranged on one side of the fabric in the radial direction and can actively adjust the running speed of the fabric on the side; the detection mechanism is arranged in front of and/or behind the correction mechanism along the running route of the fabric, and the detection mechanism and the correction mechanism are controlled by the central processing unit.
In a preferred embodiment of the present invention, the straightening mechanism includes a friction roller having a friction surface on an outer periphery thereof, and a motor, the friction roller being driven by the motor, and the motor being controlled by the central processing unit.
As a preferred embodiment of the invention, the straightening mechanism comprises a manipulator, which is 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.
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 pattern 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 filling/pattern skew occurs or not;
C. when the central processing unit judges that skew weft/pattern skew occurs, the running speed of the fabric on the self side is actively adjusted through the correcting mechanism to correct the skew weft/pattern skew, and the correction method specifically comprises the following steps:
c1, when one end of the weft yarn at the correcting mechanism side lags behind the other end of the weft yarn at the opposite side, the central processing unit controls the correcting mechanism to actively increase the running speed of the fabric at the correcting mechanism side and correct the skew weft/pattern of the fabric;
c2, when one end of the weft yarn on the correcting mechanism side is ahead of the other end of the weft yarn on the opposite side, the central processing unit controls the correcting mechanism to actively reduce the running speed of the fabric on the correcting mechanism side and correct the skew weft/pattern 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 pattern 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 skew filling/pattern skew occurs or not;
C. when the central processing unit judges that skew weft/pattern skew occurs, the running speed of the fabric on the self side is actively adjusted through the correcting mechanism to correct the skew weft/pattern skew, and the correction method specifically comprises the following steps:
c1, when one end of the weft yarn at the correcting mechanism side lags behind the other end of the weft yarn at the opposite side, the central processing unit controls the correcting mechanism to actively increase the running speed of the fabric at the correcting mechanism side and correct the skew weft/pattern of the fabric;
c2, when one end of the weft yarn on the correcting mechanism side is ahead of the other end of the weft yarn on the opposite side, the central processing unit controls the correcting mechanism to actively reduce the running speed of the fabric on the correcting mechanism side and correct the skew weft/pattern of the fabric;
D. a detection mechanism in front of the correction mechanism collects weft yarn and pattern conditions of the running fabric and transmits the collected data to a central processing unit;
E. c, the central processing unit receives and processes the data of the detection mechanism in the step D, and judges whether the fabric has skew filling/pattern skew after the fabric passes through the step C;
F. and C, when the central processing unit judges that skew weft/pattern exists after the step C, the central processing unit continuously actively increases or reduces the running speed of the fabric on the same side of the central processing unit through the correcting mechanism to correct the skew weft/pattern, and the method specifically comprises the following steps:
f1, when one end of the weft yarn at the correcting mechanism side lags behind the other end of the weft yarn at the opposite side, the central processing unit controls the correcting mechanism to continuously and actively increase the running speed of the fabric at the correcting mechanism side, and the skew/pattern skew correction of the fabric is executed;
f2, when one end of the weft yarn on the correcting mechanism side is ahead of the other end of the weft yarn on the opposite side, the central processing unit controls the correcting mechanism to continuously and actively reduce the running speed of the fabric on the correcting mechanism side, and the skew/pattern skew correction of the fabric is executed.
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 weft straightening and pattern finishing method has high weft straightening and pattern finishing precision, the weft straightening and pattern finishing is not influenced by the width of the fabric, the bottleneck that the correction effect of the existing weft straightening and pattern finishing technology is unstable is broken through, the pattern, the grain, the style and the basic organization structure of the surface of the textile are reproduced, the use value of the textile is improved, and the product quality is improved.
The correcting mechanism for actively adjusting the running speed of the fabric on one side in the fabric width direction is arranged on one side of the fabric in the fabric width direction, and when the correcting mechanism works, the central processing unit actively adjusts the running speed of the fabric on one side of the central processing unit through the correcting mechanism according to detection data of the detection mechanism to correct the fabric distortion.
The correcting mechanism is preferably a friction roller and a mechanical hand, and compared with a pinwheel in the prior art, the size of the correcting mechanism is greatly reduced, even is only one tenth 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 invention can effectively correct the fabrics which have loose structures, large extensibility and extremely easy deformation, has wide range of applicable textile types, does not damage the fabrics during correction, has quick correction response and can carry out correction control in real time.
The invention ensures the state of the fabric after being corrected to be kept, has compact structure, has higher weft straightening and pattern straightening strength than the prior art, can correct high-deformation weft yarns, is more stable, is easy to be used with other after-finishing equipment, and has better weft straightening effect.
The method provided by the invention has the advantages that the method steps are optimized according to the characteristics that the deformation of the textile in the operation process is nonlinear and time-varying, the intelligent degree is high, the production efficiency is greatly improved, the labor intensity of operators is reduced, the requirements of actual industrial production are greatly met, and the competitiveness of enterprises is enhanced.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a first embodiment of the fabric weft or pattern finishing device of the present invention.
FIG. 2 is a schematic structural diagram of a second embodiment of the fabric weft straightening or pattern straightening device of the invention.
FIG. 3 is a schematic structural view of a third embodiment of the weft straightening or pattern straightening device of the fabric of the invention.
Fig. 4 is a schematic view of a working state of the manipulator clamping a fabric according to the present invention.
FIG. 5 is a schematic view of a first construction of the friction roller of the present invention.
FIG. 6 is a second schematic view of the friction roller of the present invention.
Detailed Description
A fabric weft straightening or pattern straightening device shown in fig. 1 to 6 comprises a central processing unit, a detection mechanism 5 and a correction mechanism which is arranged on one side of the fabric 6 in the width direction, such as the right side shown in the figure, and can actively adjust the running speed of the fabric on the side, such as the right side shown in the figure; the detecting means 5 are placed in front of and/or behind the straightening means along the running path of the fabric, the detecting means 5, the straightening means being controlled by a central processing unit, not shown.
As a preferred embodiment of the present invention, as shown in fig. 1 and 2, the straightening mechanism includes a
As a preferred embodiment of the present invention, as shown in fig. 3 and 4, the straightening mechanism includes a manipulator 3, and the manipulator 3 is controlled by a central processing unit. The manipulator 3 can adopt electric clamping jaws driven by a motor or pneumatic clamping jaws driven by an air cylinder and a linear motor 10 with a screw-nut pair linear motion mechanism, wherein the nut motion direction of the linear motor 10 is parallel to the running direction of the fabric 6, the electric clamping jaws and the pneumatic clamping jaws are arranged on the nuts, the manipulator 3 shown in figure 3 comprises the pneumatic clamping jaws driven by an air cylinder 9 and the linear motor 10, and the air cylinder 9 and the linear motor 10 can be in wired electric connection with a central processing unit through cables and can also be in wireless electric connection with the central processing unit through wireless signals, so that the manipulator is controlled by the central processing unit. It should be noted that any device capable of gripping and releasing a fabric or gripping and releasing a fabric may be used as the robot arm 3.
As a preferred embodiment of the invention, as shown in fig. 1, 2 and 3, the fabric weft straightening or pattern straightening device further comprises a spreading mechanism 4 for spreading the fabric, wherein the spreading mechanism 4 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 4 includes a commercially available conventional spiral spreading roll, a rubber spreading roll, a telescopic plate type spreading roll, or the like. The expanding mechanism 4 can be an actively rotating expanding roller or an expanding bending roller driven by the
In a preferred embodiment of the present invention, the detection means 5 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 fabric weft straightening or pattern straightening method, see figures 1, 2 and 3,
a. in the case where the detection means 5 are placed in front of or behind the straightening means along the path of travel of the fabric 6, the following steps are included:
A. the detection mechanism 5 collects weft yarn and pattern conditions of the running fabric 6 and transmits the collected data to the central processing unit; the detection mechanism 5 is preferably an industrial camera, such as a linear array camera or an area array camera, and in the moving process of the fabric 6, firstly, the industrial camera collects the whole continuous weft yarn/pattern image of the fabric 6, collects the whole weft yarn/whole pattern image on the moving fabric 6 on line in real time, ensures the accuracy of fabric weft yarn/pattern collection, and transmits the collected whole weft yarn/whole pattern image to the central processing unit in time;
B. the central processing unit receives and processes the data of the detection mechanism 5 and judges whether skew filling/pattern skew occurs; the central processing unit compares the obtained whole weft yarn/whole pattern image with a set, namely standard, whole weft yarn/whole pattern image, and judges whether skew weft yarn/pattern skew occurs or not;
C. when the central processing unit judges that skew weft/pattern skew occurs, the running speed of the fabric on the self side is actively adjusted through the correcting mechanism to correct the skew weft/pattern skew, and the correction method specifically comprises the following steps:
c1, when one end of the weft yarn at the correcting mechanism side lags behind the other end of the weft yarn at the opposite side, the central processing unit controls the correcting mechanism to actively increase the running speed of the fabric at the correcting mechanism side and correct the skew weft/pattern of the fabric; for example, when the correction mechanism adopts the
c2, when one end of the weft yarn on the correcting mechanism side is ahead of the other end of the weft yarn on the opposite side, the central processing unit controls the correcting mechanism to actively reduce the running speed of the fabric on the correcting mechanism side and correct the skew weft/pattern of the fabric; for example, when the correction mechanism adopts the
b. in the case where the detection means 5 are placed in front of and behind the straightening means along the path of travel of the fabric 6, the following steps are included:
A. a detection mechanism 5 behind the correction mechanism collects weft yarn and pattern conditions of the running fabric and transmits the collected data to a central processing unit; the detection mechanism 5 is preferably an industrial camera, such as a linear array camera or an area array camera, and in the moving process of the fabric 6, firstly, the industrial camera collects the whole continuous weft yarn/pattern image of the fabric 6, collects the whole weft yarn/whole pattern image on the moving fabric 6 on line in real time, ensures the accuracy of fabric weft yarn/pattern collection, and transmits the collected whole weft yarn/whole pattern 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 skew filling/pattern skew occurs or not; the central processing unit compares the obtained whole weft yarn/whole pattern image with a set, namely standard, whole weft yarn/whole pattern image, and judges whether skew weft yarn/pattern skew occurs or not;
C. when the central processing unit judges that skew weft/pattern skew occurs, the running speed of the fabric on the self side is actively adjusted through the correcting mechanism to correct the skew weft/pattern skew, and the correction method specifically comprises the following steps:
c1, when one end of the weft yarn at the correcting mechanism side lags behind the other end of the weft yarn at the opposite side, the central processing unit controls the correcting mechanism to actively increase the running speed of the fabric at the correcting mechanism side and correct the skew weft/pattern of the fabric; for example, when the correction mechanism adopts the
c2, when one end of the weft yarn on the correcting mechanism side is ahead of the other end of the weft yarn on the opposite side, the central processing unit controls the correcting mechanism to actively reduce the running speed of the fabric on the correcting mechanism side and correct the skew weft/pattern of the fabric; for example, when the correction mechanism adopts the
D. a detection mechanism 5 in front of the correction mechanism collects weft yarn and pattern conditions of a running fabric 6 and transmits the collected data to a central processing unit; the detection mechanism 5 is preferably an industrial camera, such as a linear array camera or an area array camera, and when the fabric 6 moves, the industrial camera collects the whole continuous weft yarn/pattern image of the fabric 6, collects the whole weft yarn/whole pattern image on the moving fabric 6 on line in real time, ensures the accuracy of fabric weft yarn/pattern collection, and transmits the collected whole weft yarn/whole pattern 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 has skew filling/pattern skew after the fabric passes through the step C; specifically, the central processing unit compares the obtained whole weft yarn/whole pattern image with a set, namely standard, whole weft yarn/whole pattern image, and judges whether skew weft yarn/pattern skew exists;
F. and C, when the central processing unit judges that skew weft/pattern exists after the step C, the central processing unit continuously actively increases or reduces the running speed of the fabric on the same side of the central processing unit through the correcting mechanism to correct the skew weft/pattern, and the method specifically comprises the following steps:
f1, when one end of the weft yarn at the correcting mechanism side lags behind the other end of the weft yarn at the opposite side, the central processing unit controls the correcting mechanism to continuously and actively increase the running speed of the fabric at the correcting mechanism side, and the skew/pattern skew correction of the fabric is executed; for example, when the correction mechanism adopts the
f2, when one end of the weft yarn at the straightening mechanism side is ahead of the other end of the weft yarn at the opposite side, the central processing unit controls the straightening mechanism to continuously and actively reduce the running speed of the fabric at the straightening mechanism side and execute the skew/pattern correction of the weft yarn of the fabric, for example, when the straightening mechanism adopts a
Through tests, the invention has the advantages of wide range of applicable textile types, simpler structure, lower 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 qualification rate and good effect.
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