CN216427776U

CN216427776U - Weft straightening machine for fabric straightening

Info

Publication number: CN216427776U
Application number: CN202121175349.0U
Authority: CN
Inventors: 顾金华
Original assignee: Changzhou Hongda Intelligent Equipment Industry Development Research Institute Co ltd
Current assignee: Changzhou Hongda Intelligent Equipment Industry Development Research Institute Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-05-03
Anticipated expiration: 2031-05-28

Abstract

The utility model discloses a weft straightening machine for fabric straightening, which comprises a fabric detection mechanism, fabric straightening mechanisms and an electric controller, wherein the fabric straightening mechanisms comprise straightening belts and driving mechanisms for driving the straightening belts to circularly run, at least three fabric straightening mechanisms are arranged along the fabric width direction, and the driving mechanisms are controlled by the electric controller. The driving mechanism comprises a motor, a driving wheel and a driven wheel, the driving wheel is connected with the motor, the correcting belt is annular and is arranged between the driving wheel and the driven wheel, the driving wheel and the driven wheel are arranged on a rack of the weft straightener or on an independently arranged supporting frame, and the motor is controlled by an electric controller. The utility model can correct partial areas, small segments and irregular weft skewing, weft bending or flower shape deformation, the correction amount can be accurately and finely adjusted, the real-time correction can be realized, the response speed is high, the correction precision is high, excessive drafting or cloth stacking can not occur, the structure is simple, and the use cost is low.

Description

Weft straightening machine for fabric straightening

Technical Field

The utility model relates to a correcting device, in particular to a weft straightening machine for correcting fabrics, and belongs to the technical field of textile equipment and processes.

Background

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, flower shape skew and flower shape bending are often generated to influence subsequent processing, so that the quality of finished fabrics is influenced, the use value of textiles is reduced, and therefore, a weft straightener is required to be used for correcting the texture and the flower shape deformation of the fabric.

The existing weft straightening machine comprises a plurality of straightening rollers, a fabric detection mechanism for detecting fabric textures and patterns and an electric controller, wherein the straightening rollers comprise straight rollers for straightening oblique weft and curved rollers for straightening curved weft; the straight roller is arranged in the oblique weft frame, and the oblique weft frame can be driven to rotate, so that the straight roller and the fabric weft yarn are not parallel any more, and the oblique weft is corrected; the bending roll is characterized in that a steel sleeve with a rubber roll surface is movably sleeved on a bending roll mandrel, the steel sleeve can rotate around the bending roll mandrel, the bending roll mandrel can also rotate, and the steel sleeve can correct the weft bending when rotating; when the fabric is tightly attached to the surface of a straight roller or an arc rubber roller with a certain pressure, the relative running speed of the warp yarns of the fabric is changed, and the corresponding part of the inclined weft yarns is led to be ahead or behind, so that the vertical intersection of the weft yarns and the warp yarns in the whole width is restored, and the effect of straightening the weft yarns by the straightening roller is achieved.

In the existing weft straightening machine, a plurality of straight rollers are installed in a weft inclined frame, the weft inclined frame is provided with a rotating shaft, one side of the weft inclined frame is provided with a driving assembly for driving the weft inclined frame to rotate, and a detection potentiometer cannot completely and accurately reflect the actual position state of the straight rollers in the weft inclined frame due to various factors such as movement gaps between racks and gears, so that the correction effect of the fabric weft inclination can be influenced; in addition, the open structure of the rack and the gear needs to be maintained frequently, so that the use cost of the equipment is increased.

The existing bending roller in the weft straightening machine drives a bending roller mandrel to rotate through a motor and a transmission shaft and a chain wheel and chain transmission mechanism, and the shaft body of the transmission shaft is rotationally connected with a frame of the weft straightening machine. When the transmission shaft drives the roller core shaft to rotate, the chain wheel is easy to fatigue damage due to factors such as radial run-out of the transmission shaft, the chain transmission is often unsmooth, the power consumption is increased, the abrasion of the chain and the chain wheel is accelerated, the chain is easy to stretch and break, even accidents occur, the safety production is not facilitated, the normal matching operation of the dyeing and finishing process flow is influenced, the maintenance cost is high, and the use cost is increased.

Moreover, the existing weft straightening machine corrects the deformation of the fabric by using a plurality of straight rollers and curved rollers through adjusting the stroke of the fabric, on one hand, the existing weft straightening machine cannot correct the deflection, weft bending or pattern deformation of local areas, small segments and irregularity, and the correction amount cannot be finely adjusted, so that the correction precision is low, and the fine and accurate correction of the whole fabric cannot be achieved; on the other hand, the existing weft straightening machine needs to correct the fabric through a plurality of straight rollers and bending rollers, is relatively complex in mechanical structure, relatively long in adjustment stroke, belongs to a system with relatively large delay, is slow in response, is not beneficial to real-time correction control, cannot finish weft with high precision, and is difficult to improve the product quality; on the other hand, the existing weft straightening machine applies tension to the fabric in the whole width, and the excessive stretching or the stacking of the fabric in the weft straightening machine can be caused by the excessive stretching or the excessive pressing of the fabric, so that the phenomena of excessive stretching and edge curling of the fabric are easy to occur; in addition, the existing weft straightening machine cannot effectively correct some knitted fabrics which have large extensibility and are easy to deform under external force, and fabrics with loose structures such as chiffon, and has a small application range. No solution is currently available to these problems.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a weft straightener for fabric straightening, which can correct local areas, small segments, irregular weft skewing, weft bending and pattern deformation, can accurately fine adjust the correction amount, can realize real-time correction, has high response speed and high correction precision, does not generate excessive drafting or cloth stacking, and has simple structure, low use cost and wide application range.

In order to solve the technical problem, the utility model adopts the weft straightening machine for fabric straightening, which comprises a fabric detection mechanism, a fabric straightening mechanism and an electric controller, wherein the fabric detection mechanism is connected with the electric controller, the fabric straightening mechanism is controlled by the electric controller, the fabric straightening mechanism comprises a straightening belt and a driving mechanism for driving the straightening belt to circularly run, at least three fabric straightening mechanisms are arranged along the fabric width direction, and the driving mechanism is controlled by the electric controller.

As a preferred embodiment of the present invention, the driving mechanism includes a motor, a driving wheel and a driven wheel, the driving wheel is connected to the motor, the correction belt is in a ring shape and is installed between the driving wheel and the driven wheel, the driving wheel and the driven wheel are installed on a frame of the weft straightener or on an independently installed supporting frame, and the motor is controlled by an electric controller.

In a preferred embodiment of the present invention, the correction belt is made of wear-resistant material, the correction belt is annular, and the cross section of the correction belt comprises a rectangle, a trapezoid, a triangle and a circle.

In a preferred embodiment of the present invention, the number of the fabric straightening mechanisms is 3 to 50 and is arranged in the fabric width direction.

In a preferred embodiment of the utility model, the fabric detection device comprises an industrial camera or a photoelectric sensor, which is connected to an electric controller, and is arranged on the fabric inlet side and/or the fabric outlet side of the fabric correction device.

In a preferred embodiment of the utility model, the fabric straightening mechanism further comprises straightening rollers and/or straightening bending rollers, and the electric controller is a digital controller with a man-machine operation interface, or an embedded industrial controller, or an industrial personal computer, or a PLC programmable controller.

After the technical scheme is adopted, the utility model has the following beneficial effects:

the fabric correcting mechanism comprises a correcting belt and a driving mechanism for driving the correcting belt to circularly run, wherein the number of the fabric correcting mechanisms is at least three, the fabric correcting mechanisms are arranged along the width direction of the fabric, the driving mechanism is controlled by an electric controller, and according to the weft yarn or the flower-shaped deformation condition of the fabric, the electric controller controls the running speed and/or the running direction of the correcting belt of the weft yarn or the flower-shaped deformation area, so that the correcting belt of the weft yarn or the flower-shaped deformation area is in contact with the fabric to correct the weft yarn or the flower-shaped deformation. When the device works, a fabric width direction correction area is segmented and refined, the running speed and/or the running direction of a correction belt positioned in a weft yarn or pattern deformation area are controlled by an electric controller, local areas, small segments and irregular weft skew, weft bending or pattern deformation are effectively corrected, the correction amount can be singly and independently and accurately finely adjusted during correction, the response speed is high, the speed regulation range is large, the correction precision is high, and the device can well correct local weft skew, weft bending or pattern deformation at a certain part of a textile, the weft skew, weft bending or pattern deformation without irregular shape and complicated confusion, full-width straight line, arc shape, suspension angle weft skew, weft bending or pattern deformation and the like; moreover, no specific requirements are required for the weave structure parameters of the fabric and the offset of the weft yarns, and the skew weft yarns, warp weft yarns or pattern deformation which cannot be corrected by the conventional straight rollers and bending rollers can be finished.

The utility model can only correct tension corresponding to the deformed part of the fabric, so that excessive drafting or stacking can not occur, and the problems of excessive drafting or stacking of the fabric in the weft straightener caused by excessive or insufficient tension applied to the fabric by the existing weft straightener are solved.

The utility model can correct the knitted fabrics which have large extensibility and are easy to deform under the external force and the fabrics with loose structures, such as chiffon and the like, which cannot be corrected by the existing straight rollers and bending rollers, and has wide application range. The weft skew/warp skew of the knitted fabric is that the stitches deviate from a straight line vertical to the wale of the fabric, namely, the courses of the knitted fabric connected together in series leave a balanced state, and the conventional weft straightening machine usually corrects the fabric in a full width, but cannot achieve the aim of effective correction. The utility model can only accelerate or reduce the running speed of the correction belt in the area at the initial part of the crosswise row stitch bending of the knitted fabric so as to lead the area to be recovered to be vertical to the straight line of the wale of the fabric, and other stitch bending connected with the initial part in series can also be corrected.

The fabric straightening mechanism comprises a straightening belt and a driving mechanism for driving the straightening belt to circularly run, and has extremely low delay, quicker response time and better performance; the properties of complicated mechanical structure, long adjusting stroke, large delay system and slow response in the prior art are completely avoided. The method overcomes the bottleneck of the prior art, and can correct the deformation conditions of small segments, irregularity and the like in real time.

The utility model can control the running speed of each correction belt according to the requirement, can form various speed combinations in the width direction of the fabric, has no requirements on whether the fabric is centered and the width of the fabric when correcting the skewness, the warp or the deformation of the patterns, can self-adapt to the fabric feeding state when the fabric is corrected, and is convenient to use. And in the straight roller and the bending roller in the prior art, if the width of the fabric is smaller than the working width of the straight roller and the working width of the bending roller, the correction efficiency is correspondingly reduced, the correction effect is greatly reduced, moreover, the fabric enters the existing weft straightening machine and must be in a good centered state, otherwise, the bending roller can increase the deformation degree in a doubling way. Therefore, the utility model has no limit to application conditions, and greatly optimizes the weft straightening working conditions.

The utility model only needs to increase or decrease the same speed increment for all the correcting belts simultaneously, thereby obtaining the weft straightening tension required by the process and being very beneficial to realizing high-precision fabrics. Compared with the prior art, when the low-elasticity woven fabric is used for weft straightening, after the angle of the straight roller is adjusted, the full-width inward fabric does not completely cover the straight roller any more, the fabric is suspended, and weft skew/weft bending cannot be accurately corrected, so that the application range of the low-elasticity woven fabric is wider.

The utility model has the advantages of simple and reasonable structure, low use cost, convenient installation, simple and convenient operation, convenient maintenance and high reliability.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of a weft straightener for fabric straightening according to the utility model.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic top view of fig. 1.

FIG. 4 is another schematic construction of the straightener for fabric straightening according to the utility model.

Detailed Description

Referring to fig. 1-4, a method of straightening a fabric using a straightening mechanism including a straightening belt and a drive mechanism for driving the straightening belt in an endless loop, the drive mechanism being controlled by an electrical controller, the method comprising the steps of:

(1) arranging at least three of said straightening mechanisms in the web direction of the fabric 3;

(2) according to the weft yarn or flower-shaped deformation condition of the fabric 3, the electric controller controls the running speed and/or the running direction of the correction belt of the weft yarn or flower-shaped deformation area, and the correction belt of the weft yarn or flower-shaped deformation area is in contact with the fabric 3 to correct the weft yarn or flower-shaped deformation.

As a preferred embodiment of the present invention, the method further comprises the step of collecting weft and flower shape data of the running fabric 3 by the fabric detecting means before the step (2), and transmitting the collected data to the electric controller.

In step (2), as shown in fig. 2, in a preferred embodiment of the present invention, the weft or the flower-shaped deformation is corrected by using the correction tape of the weft or the flower-shaped deformation area and the fabric in a surface contact manner. The adoption of the surface contact mode can greatly improve the correction efficiency and shorten the correction time. In the present invention, the correction tape and the fabric may be in line contact to correct the weft or flower shape distortion, not shown.

As a preferred embodiment of the present invention, step (2) is specifically: according to the weft skew, weft bending or pattern deformation, the position of the area with the variation of the width direction and the variation amount of the fabric,

(2-1) when the weft skew, weft bending or pattern deformation direction of the fabric is consistent with the running direction of the fabric, the electric controller correspondingly reduces the running speed of the correction belt in the corresponding deformation area according to the variation of the weft or pattern, the variation of the weft or pattern and the reduction of the running speed of the correction belt are in a monotonically increasing relation, namely the larger the variation is, the larger the speed reduction of the correction belt is, and/or the electric controller changes the running direction of the correction belt in the weft or pattern deformation area, for example, runs in the reverse direction, so that the corresponding part of the weft skew is delayed, thereby restoring the vertical intersection of the weft and the warp in the whole width and correcting the weft skew, weft bending or pattern deformation;

(2-2) when the weft skew, weft bending or pattern deformation direction of the fabric is opposite to the running direction of the fabric, the electric controller correspondingly accelerates the running speed of the correction belt in the corresponding deformation area according to the variation of the weft or the pattern, so that the corresponding part of the weft skew is advanced, the vertical intersection of the weft and the warp in the whole width is recovered, and the weft skew, the weft bending or the pattern deformation is corrected.

Referring to fig. 1 to 4, a weft straightener for fabric straightening comprises a fabric detection mechanism, a fabric straightening mechanism and an electric controller, wherein the fabric detection mechanism is connected with the electric controller, the fabric straightening mechanism is controlled by the electric controller, the fabric straightening mechanism 1 comprises a straightening belt 1-1 and a driving mechanism 1-2 for driving the straightening belt 1-1 to circularly run, at least three fabric straightening mechanisms 1 are arranged along the fabric width direction, and the driving mechanism 1-2 is controlled by the electric controller. In the present invention, the at least three fabric straightening devices 1 may be arranged at intervals or in sequence along the width direction of the fabric 3, as shown in fig. 1 and 4; alternatively, they may be arranged in a zigzag pattern alternately back and forth in the width direction of the fabric 3, or may be arranged in other patterns in the width direction of the fabric, not shown.

As a preferred embodiment of the present invention, as shown in fig. 1 to 3, the driving mechanism 1-2 comprises a motor 1a, a driving wheel 1b and a driven wheel 1c, the driving wheel 1b is preferably connected with the motor 1a through a belt 4, the correcting belt 1-1 is in a ring shape, the correcting belt 1-1 is installed between the driving wheel 1b and the driven wheel 1c, the driving wheel 1b and the driven wheel 1c are preferably rotatably installed on a frame 7 of the weft straightener or on a support frame independently arranged through long shafts 5 and 6 and bearings, respectively, two ends of the long shafts 5 and 6 are fixedly installed on the frame 7, and a driver of the motor 1a is connected with an electric controller through a wired cable or a wireless signal so as to be controlled by the electric controller. In the present invention, the driving wheel 1b and the driven wheel 1c are preferably synchronous wheels, and the correction belt 1-1 is preferably a synchronous belt.

In the present invention, as shown in fig. 4, the driving mechanism 1-2 may also adopt an outer rotor motor 8 and a driven wheel 1c, the correcting belt 1-1 is in a ring shape, the correcting belt 1-1 is installed between the outer rotor motor 8 and the driven wheel 1c, the outer rotor motor 8 is installed on a frame 7 of the weft straightener or on an independently arranged supporting frame or a long shaft 5, the driven wheel 1c is rotatably installed on the frame 7 of the weft straightener or on an independently arranged supporting frame through a long shaft 6 and a bearing, the outer rotor motor 8 is controlled by an electric controller, not shown, and in the implementation, each outer rotor motor 8 is connected with the electric controller through a wired cable or a wireless signal. After the weft straightener is started, the electric controller can control the outer rotors to run at different rotating speeds or the same rotating speed through the outer rotor motors 8, and the outer rotors of the outer rotor motors drive the correction belts 1-1 to run in an annular mode.

As a preferred embodiment of the present invention, the correction belt 1-1 is made of a wear-resistant material such as rubber or the like, the correction belt 1-1 has a ring shape, and the cross section of the correction belt 1-1 includes a rectangular shape, a trapezoidal shape, a triangular shape, and a circular shape. The width of the contact surface of the correction belt 1-1 and the fabric is preferably 5-500 mm, and when the cross section of the correction belt 1-1 is circular, the diameter of the correction belt 1-1 is preferably 3-100 mm.

In a preferred embodiment of the present invention, the number of the fabric straightening mechanisms 1 is 3 to 50 and is arranged in the fabric width direction.

In a preferred embodiment of the utility model, the fabric detection means comprise an industrial camera 2 or a photosensor, not shown, the industrial camera 2 or the photosensor being connected to an electric controller, and the fabric detection means are arranged on the fabric feed side and/or the fabric discharge side of the fabric correction means 1. When the industrial camera 2 works, the industrial camera collects texture and flower shape data of the fabric 3 in operation and transmits the data to the electric controller in real time; the electric controller calculates and determines the deformation direction of the weft skew, weft bending or flower shape of the fabric, the position of the area with radial variation and the correction parameters of the variation, and respectively adjusts the running speed and/or the running direction of each correction belt 1-1 according to the distribution of the radial variation of the correction belt 1-1 associated with the position of the area with radial variation according to the correction parameters, thereby completing the correction of the weft skew, weft bending or flower shape deformation of the deformation area.

As a preferred embodiment of the present invention, the fabric correcting mechanism may further include a straightening roll and/or a straightening curved roll commonly used in existing weft straightening machines, and the straightening roll and the straightening curved roll are not shown in the figure, and the straightening roll and/or the straightening curved roll assist the weft straightening. The electric controller is a digital controller with a man-machine operation interface, such as a DDC digital controller or an embedded industrial controller or an industrial personal computer or a PLC programmable controller, and is not shown in the figure.

Through tests, the utility model can accurately correct local areas, small segments and irregular weft skewness, weft bending or pattern deformation, has high response speed, no excessive drafting or stacking, wide application range, reasonable and simple structure and high reliability, and obtains good effect.

Claims

1. A weft straightener for fabric straightening comprising a fabric sensing mechanism, a fabric straightening mechanism and an electrical controller, the fabric sensing mechanism being connected to the electrical controller, the fabric straightening mechanism being controlled by the electrical controller, characterized in that: the fabric straightening mechanism (1) comprises a straightening belt (1-1) and driving mechanisms (1-2) for driving the straightening belt (1-1) to circularly run, at least three fabric straightening mechanisms (1) are arranged along the fabric width direction, and the driving mechanisms (1-2) are controlled by an electric controller.

2. Weft straightener for fabric straightening according to claim 1, characterized in that: the driving mechanism (1-2) comprises a motor (1 a), a driving wheel (1 b) and a driven wheel (1 c), the driving wheel (1 b) is connected with the motor (1 a), a correcting belt (1-1) is annular, the correcting belt (1-1) is installed between the driving wheel (1 b) and the driven wheel (1 c), the driving wheel (1 b) and the driven wheel (1 c) are installed on a rack of the weft straightener or on an independently arranged supporting frame, and the motor (1 a) is controlled by an electric controller.

3. Weft straightener for fabric straightening according to claim 1, characterized in that: the correcting belt (1-1) is made of wear-resistant materials, the correcting belt (1-1) is annular, and the cross section of the correcting belt (1-1) comprises a rectangle, a trapezoid, a triangle and a circle.

4. Weft straightener for fabric straightening according to claim 1, characterized in that: 3-50 fabric straightening mechanisms (1) are arranged in the fabric width direction.

5. Weft straightener for fabric straightening according to claim 1, characterized in that: the fabric detection mechanism comprises an industrial camera (2) or a photoelectric sensor, the industrial camera (2) or the photoelectric sensor is connected with an electric controller, and the fabric detection mechanism is arranged on the cloth feeding side and/or the cloth discharging side of the fabric correction mechanism (1).

6. Weft straightener for fabric straightening according to any one of the claims 1 to 5, characterized in that: the fabric straightening mechanism further comprises straightening rollers and/or straightening bending rollers, and the electric controller is a digital controller with a human-computer operation interface, or an embedded industrial controller, or an industrial personal computer or a PLC programmable controller.