CN216427774U

CN216427774U - Weft straightening machine

Info

Publication number: CN216427774U
Application number: CN202121174391.0U
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 straightener which comprises a plurality of correcting rollers, a detection mechanism for detecting fabric textures and flower shapes and an electric controller, wherein the correcting rollers are arranged on a frame of the weft straightener and are arranged along the fabric radial direction, the detection mechanism is connected with the electric controller, the correcting rollers are controlled by the electric controller, each correcting roller comprises a shaft and at least three sleeves sleeved on the shaft, and each sleeve is controlled by the electric controller to rotate independently. The two ends of the shaft are fixedly arranged on a rack of the weft straightener, each sleeve is rotatably sleeved on the shaft through a bearing, each sleeve is driven to rotate by a corresponding driving mechanism, and each driving mechanism is controlled by an electric controller. The utility model can correct partial area, small segment and irregular skewness/skew pattern and warp/bending pattern, the correction amount can be finely adjusted accurately, real-time correction can be realized, the response speed is high, the correction precision is high, excessive drafting or stacking can not occur, the structure is simple, the use cost is low, and the application range is wide.

Description

Weft straightening machine

Technical Field

The utility model relates to a correcting device, in particular to a weft straightener used for correcting fabric texture and flower shape, 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 correct the texture and the flower shape distortion of the fabric.

The existing weft straightening machine comprises a plurality of straightening rollers, a 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 fabric distortion by using a plurality of straight rollers and curved rollers through adjusting the fabric stroke, on one hand, the existing weft straightening machine cannot correct the skew and the bending of the weft/the flower shape in a local area, a small segment and irregularity, and the correction amount cannot be finely adjusted, so that the correction precision is low, and the full-width fabric cannot be finely and accurately corrected; 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 which can rectify partial areas, small segments and irregular skewness/skew and bending/bending of the wefts, the rectification amount can be finely adjusted accurately, real-time rectification can be realized, the response speed is high, the rectification precision is high, excessive drafting or stacking cannot occur, the structure is simple, the use cost is low, and the application range is wide.

In order to solve the technical problem, the utility model adopts the weft straightener which comprises a plurality of correcting rollers, a detection mechanism for detecting fabric textures and patterns and an electric controller, wherein the correcting rollers are arranged on a frame of the weft straightener and arranged along the fabric width direction, the detection mechanism is connected with the electric controller, the correcting rollers are controlled by the electric controller, each correcting roller comprises a shaft and at least three sleeves sleeved on the shaft, and each sleeve is controlled by the electric controller to rotate independently.

In a preferred embodiment of the utility model, the shaft is fixed at both ends to a frame of the weft straightener, each sleeve is rotatably mounted on the shaft by a bearing, each sleeve is driven to rotate by a corresponding drive mechanism, and each drive mechanism is controlled by an electric controller.

As a preferred embodiment of the present invention, two ends of the shaft are fixedly mounted on a frame of the weft straightener, at least three outer rotor motors are arranged along the length direction of the shaft, outer rotors of the outer rotor motors are rotatably sleeved on the shaft through bearings and are used as independently rotating sleeves, and the outer rotor motors are controlled by an electric controller.

In a preferred embodiment of the present invention, the number of the leveling rollers is 2 to 8, and the number of the sleeves sleeved on the shaft is 3 to 50.

As a preferred embodiment of the utility model, the outer circumference of the sleeve is entirely or partially coated or provided with a layer of friction material.

In a preferred embodiment of the utility model, the detection means comprise an industrial camera or a photoelectric sensor, which is connected to an electric controller, and the detection means are arranged on the feed side and/or the discharge side of the correction roll.

In a preferred embodiment of the utility model, the straightening roll further comprises a straightening straight roll and/or a straightening curved roll, 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 utility model preferably adopts a correcting roller which comprises a shaft and at least three sleeves sleeved on the shaft, wherein each sleeve is controlled by an electric controller to independently rotate, and the electric controller controls the rotating speed and/or the rotating direction of the sleeve in a weft yarn or flower-shaped distortion area according to the weft yarn or flower-shaped distortion condition of the fabric to correct weft yarn or flower-shaped distortion. When the device works, a fabric width correction area is thinned in sections, the sleeve rotating speed and/or rotating direction in a weft yarn or pattern distortion area is controlled by an electric controller, partial areas, small segments and irregular weft skew/pattern skew and weft bend/pattern bend are effectively corrected, the correction amount can be independently and accurately fine-tuned individually during correction, the response speed is high, the speed regulation range is large, the correction precision is high, the local weft skew/pattern skew or weft bend/pattern bend at a certain part of a textile, the weft skew/pattern skew without irregular shape and complicated confusion or weft bend/pattern bend, full-width straight lines, arcs, suspension angle weft skew/pattern skew or weft bend/pattern bend and the like can be well corrected; moreover, no specific requirements are required for the weave structure parameters of the fabric and the offset of weft yarns, and skew/skew and warp/twist bending which cannot be corrected by the conventional straight roller and curved roller can be finished.

The utility model can only correct tension corresponding to the distorted 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 accelerate or reduce the linear speed of the sleeve in the area at the initial part of the crosswise row stitch bending of the knitted fabric, so that the sleeve is recovered to be vertical to the straight line of the wale of the knitted fabric, and other stitch bending can be corrected by connecting the sleeve with the initial part in series.

The utility model preferably adopts a straightening roller which comprises a shaft and at least three sleeves sleeved on the shaft, and has extremely low delay, faster 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 distortion conditions of small segments, irregularity and the like in real time.

The utility model can control the linear velocity of each sleeve as required, can form various linear velocity 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 skewing/skew of patterns or bending/bending of patterns, can self-adapt to the fabric feeding state when correcting the fabric, 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 changes the linear speed of the correcting roller only by increasing or reducing the same speed increment for all the sleeves 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 first construction of the weft straightener of the present invention.

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

FIG. 3 is a schematic view of a second construction of the weft straightener of the present invention.

FIG. 4 is a third schematic view of the weft straightener of the present invention.

Fig. 5 is a schematic view of a structure of the correcting roller of the utility model.

Fig. 6 is a front view of fig. 5.

3 fig. 3 7 3 is 3 a 3 schematic 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 6 3. 3

Fig. 8 is another schematic view of the structure of the correcting roller of the utility model.

Detailed Description

Referring to fig. 1 to 8, the weft straightener comprises a plurality of correcting rollers, a detecting mechanism and an electric controller, wherein the detecting mechanism detects fabric texture and flower shape, the fabric texture mainly refers to fabric weft yarn state information, the correcting rollers are installed on a frame 8 of the weft straightener and are arranged along the width direction of a fabric 10, the detecting mechanism is connected with the electric controller, the correcting rollers are controlled by the electric controller, the correcting rollers comprise a shaft 1 and at least three sleeves 2 sleeved on the shaft 1, and each sleeve 2 is controlled by the electric controller to rotate independently. In the utility model, the sleeve 2 can be in a hollow cylindrical shape, and can also be in the shapes of a cloth guide wheel, a roller and the like; the outer diameter of each sleeve 2 is preferably the same.

As a preferred embodiment of the present invention, as shown in fig. 5, 6 and 7, both ends of the shaft 1 are fixedly mounted on a frame 8 of the weft straightener, each sleeve 2 is rotatably sleeved on the shaft 1 through a bearing 3, each sleeve 2 is driven to rotate by a corresponding driving mechanism 4, and each driving mechanism 4 is controlled by an electric controller; in the present invention, the driving mechanism 4 preferably includes a motor 4-1 and a transmission belt such as a belt or a synchronous belt transmission mechanism 4-2, and may also be a motor 4-1 and a chain transmission mechanism or a gear transmission mechanism or a friction transmission mechanism, the friction transmission mechanism includes a friction wheel, the sleeve is driven by the motor through the friction wheel to rotate, not shown, in the implementation, the motor 4-1 is fixedly installed on a frame 8 of the weft straightener, a belt groove 2-1 is opened at one end of the sleeve 2, the belt or the synchronous belt is placed in the belt groove 2-1, and a motor control driver of each motor 4-1 is connected with an electric controller through a wire or wirelessly. After the weft straightener is started, the electric controller can control the sleeves 2 to run at different rotating speeds or the same rotating speed through the driving mechanisms 4.

As a preferred embodiment of the present invention, as shown in fig. 1, 3 and 8, two ends of the shaft 1 are fixedly mounted on a frame 8 of the weft straightener, at least three external rotor motors 5 are arranged along the length direction of the shaft 1, an external rotor of each external rotor motor 5 is rotatably sleeved on the shaft 1 through a bearing 3 and is used as each sleeve 2 which independently rotates, each external rotor motor 5 is controlled by an electric controller, and in the implementation, each external rotor motor 5 is connected with the electric controller through wires or wirelessly. 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 5.

In a preferred embodiment of the present invention, the sleeves 2 are passively driven by fabric to rotate, two ends of the shaft 1 are fixedly mounted on a frame 8 of the weft straightener, a brake, preferably a magnetic powder brake, is respectively arranged between each sleeve 2 and the shaft 1, and the magnetic powder brake mainly comprises an inner rotor, an outer rotor, an excitation coil and magnetic powder, which is not shown in the figure. When the device works, the electric controller applies control voltage to the exciting coil, the working medium magnetic powder forms a magnetic powder chain under the action of magnetic lines of force, and the inner rotor and the outer rotor are connected, so that braking torque is generated, different braking torque can be generated by different exciting voltages, and the skew/weft bend consistent with the running direction of the fabric 10 is corrected by damping the rotation of the sleeve 2.

As a preferred embodiment of the present invention, as shown in FIGS. 3 to 8, the number of the leveling rollers is 2 to 8, and the number of the sleeves 2 fitted around the shaft 1 is 3 to 50, and most preferably 5 to 20.

In a preferred embodiment of the present invention, the outer circumference of the sleeve 2 is entirely or partially coated or provided with a friction material layer, and the friction material layer is preferably made of a material with a relatively high friction coefficient, such as rubber.

In a preferred embodiment of the present invention, the detection mechanism comprises an industrial camera 9 or a photoelectric sensor, the photoelectric sensor is not shown in the figure, the industrial camera 9 or the photoelectric sensor is connected with an electric controller, the detection mechanism is arranged at the cloth inlet side and/or the cloth outlet side of the correcting roller, and the detection mechanism is preferably arranged at the cloth inlet side and the cloth outlet side of the correcting roller, as shown in fig. 1 to 4. When the industrial camera 9 works, the industrial camera 9 collects texture and flower shape data of the running fabric 10 and transmits the data to the electric controller in real time; the electric controller calculates and determines correction parameters of the variation direction, the width variation area position and the variation amount of the fabric skewing/skew of the weft bending/skew of the weft shape according to the collected data, and respectively adjusts the rotating speed and/or the sleeve steering of each sleeve according to the distribution of the width variation amount of the sleeve associated with the width variation area position according to the correction parameters, so that the skewing/skew of the weft bending/skew of the distortion area or the warp bending/skew of the weft shape are corrected.

As a preferred embodiment of the present invention, as shown in fig. 4, the correcting roll may further include a conventional correcting straight roll 6 and/or a correcting curved roll 7. Referring to fig. 1 and 2, the weft straightener of the utility model can adopt a correcting roller provided with a shaft 1 and a sleeve 2, and the rest are cloth guide rollers 11; three correcting rolls provided with a shaft 1 and a sleeve 2 can also be adopted, and the rest are cloth guide rolls 11, as shown in figure 3, and the cloth guide rolls 11 are not shown in figure 3; it may be a straightening roll provided with the shaft 1 and the sleeve 2, and a conventional straightening roll 6 and a straightening roll 7, as shown in fig. 4. 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.

Referring to fig. 1 to 8, a method for correcting fabric texture and flower shape, which corrects the fabric texture and flower shape by using a correcting roller, wherein the fabric texture mainly refers to a weft state of a fabric, the correcting roller comprises a shaft and at least three sleeves sleeved on the shaft, each sleeve is controlled by an electric controller to rotate independently, the method comprises the following steps: (1) arranging the correcting rollers along the width direction of the fabric 10, and contacting the sleeves with the fabric 10; (2) the electric controller controls the rotating speed and/or rotating direction of the sleeve in the weft yarn or flower-shaped distortion area according to the weft yarn or flower-shaped distortion condition of the fabric, and the weft yarn or flower-shaped distortion is corrected.

As a preferred embodiment of the present invention, the method further comprises the steps of collecting weft and flower shape data of the running fabric 10 by the detection means after the step (1) and before the step (2), and transmitting the collected data to the electric controller. In addition, in step (1), the sleeves are preferably actively rotated and pulled at the same rotational speed by the electric controller, but may be passively rotated by the fabric.

As a preferred embodiment of the present invention, step (2) is specifically: performing control according to the skewing/skew of weft and the bending direction of weft/flower, the position of a range of variation of width direction and variation amount, (2-1) when the skewing/skew of weft or the bending direction of weft/flower is consistent with the running direction of the fabric, correspondingly reducing the sleeve rotating speed of the corresponding distortion range by the electric controller according to the variation amount of weft or flower, wherein the variation amount of weft or flower is in monotonically increasing relation with the reduction amount of the sleeve rotating speed, namely the variation amount is larger, the sleeve decelerating speed is larger, and/or the electric controller changes the sleeve rotating direction, for example, reversely rotating, of the weft or flower distortion range to lead the corresponding part of the skew of weft to be delayed, thereby restoring the vertical intersection of the weft and the warp in the whole range and correcting the skewing/flower or bending of weft/flower; (2-2) when the fabric skews or bends the direction of the fabric is opposite to the running direction of the fabric, the electric controller correspondingly accelerates the sleeve rotating speed of the corresponding distortion area according to the variation of the weft or the pattern, so that the corresponding part of the weft in the skewing process is advanced, the vertical intersection of the weft and the warp in the whole width is recovered, and the skewing or bending of the weft is corrected.

Through tests, the utility model can accurately correct partial areas, small segments and irregular skewness/skew patterns and warp/bending patterns, 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 comprises a plurality of correcting rollers, a detection mechanism for detecting fabric textures and flower shapes and an electric controller, wherein the correcting rollers are arranged on a frame of the weft straightener and arranged along the fabric radial direction, the detection mechanism is connected with the electric controller, and the correcting rollers are controlled by the electric controller, and the weft straightener is characterized in that: the straightening roller comprises a shaft (1) and at least three sleeves (2) sleeved on the shaft (1), wherein each sleeve (2) is controlled by an electric controller to rotate independently.

2. Weft straightener according to claim 1, characterized in that: the two ends of the shaft (1) are fixedly arranged on a rack of the weft straightener, each sleeve (2) is rotatably sleeved on the shaft (1) through a bearing (3), each sleeve (2) is driven to rotate by a corresponding driving mechanism (4), and each driving mechanism (4) is controlled by an electric controller.

3. Weft straightener according to claim 1, characterized in that: the two ends of the shaft (1) are fixedly arranged on a frame of the weft straightener, at least three outer rotor motors (5) are arranged along the length direction of the shaft (1), outer rotors of the outer rotor motors (5) are rotatably sleeved on the shaft (1) through bearings (3) and are used as independently rotating sleeves (2), and the outer rotor motors (5) are controlled by an electric controller.

4. Weft straightener according to claim 1, characterized in that: the correcting roller has 2 ~ 8, and the suit has 3 ~ 50 in sleeve (2) on axle (1).

5. Weft straightener according to claim 1, characterized in that: the outer circumference of the sleeve (2) is entirely or partially coated or provided with a friction material layer.

6. Weft straightener according to claim 1, characterized in that: the detection mechanism comprises an industrial camera or a photoelectric sensor, the industrial camera or the photoelectric sensor is connected with the electric controller, and the detection mechanism is arranged on the cloth inlet side and/or the cloth outlet side of the correcting roller.

7. Weft straightener according to any one of claims 1 to 6, characterized in that: the straightening roll also comprises a straightening straight roll (6) and/or a straightening curved roll (7), 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.