CN111595847A - Fabric density and shrinkage online detection and control system and method - Google Patents
Fabric density and shrinkage online detection and control system and method Download PDFInfo
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- CN111595847A CN111595847A CN202010577014.5A CN202010577014A CN111595847A CN 111595847 A CN111595847 A CN 111595847A CN 202010577014 A CN202010577014 A CN 202010577014A CN 111595847 A CN111595847 A CN 111595847A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C17/00—Fulling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8444—Fibrous material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/845—Objects on a conveyor
- G01N2021/8455—Objects on a conveyor and using position detectors
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Abstract
The invention discloses a system and a method for online detecting and controlling fabric density and shrinkage, which comprises a pre-shrinking device, a first detecting device, a second detecting device, a calculating unit, a control unit and a safety detecting device.
Description
[ technical field ]
The invention relates to the textile processing industry, in particular to a system and a method for detecting and controlling the density and the shrinkage of a fabric on line.
[ background art ]
In the textile processing industry, density and shrinkage are important technological parameters of fabrics, the shrinkage can be obtained by density conversion, and people often use preshrinking equipment such as a preshrinking machine, a setting machine and the like to process the fabrics, so that the density or the shrinkage of the processed fabrics meet the preset requirements. The density of the fabric before being processed is possibly not uniform, so that the weight is not uniform, and the density of the fabric after being processed is uniform, so that the subsequent production and processing requirements can be met. The shrinkage rate of the processed fabric is too small, so that the fabric is easy to deform; the shrinkage rate of the processed fabric is too large, so that the waste is large, the reworking is needed, the production efficiency is influenced, and the production cost is increased.
At present, the density of the fabric is mainly detected by manual operation, wherein manual dotting sampling is carried out at the fabric input end of the pre-shrinking device or the density of the fabric before being processed is measured by using a density mirror, the manual dotting sampling is carried out at the fabric output end of the pre-shrinking device or the density of the fabric after being processed is measured by using the density mirror, the density is converted into the shrinkage, and then the operation parameters of each execution mechanism of the pre-shrinking device are manually adjusted and controlled according to the difference between the measured density or shrinkage and the preset density or shrinkage, so that the density or shrinkage of the fabric after being processed meets the preset requirement. The processing of the prior fabric has the following defects:
1. the detection method of manual dotting sampling or density mirror measurement has larger manual error, so that the measured density or shrinkage of the fabric is inaccurate, and the efficiency is low;
2. only sampling measurement can be carried out at intervals, continuous measurement can not be carried out on the fabric in real time, and the measured density or shrinkage of the fabric can not comprehensively reflect the density or shrinkage of each area in the fabric;
3. after the density or shrinkage of the fabric is manually measured, the operation parameters of each actuating mechanism of the pre-shrinking device are manually adjusted and controlled, the operation parameters are controlled by the experience of operators seriously, the adjustment is not accurate and timely enough, the efficiency is low, and the automation degree is low.
The present invention has been made in view of the above problems.
[ summary of the invention ]
The invention aims to provide a system and a method for detecting and controlling the density and the shrinkage of a fabric on line, aiming at the defects of the prior art, the system and the method can continuously detect the density and the shrinkage of the fabric before and after being processed in real time, the detected density and the shrinkage are accurate and reliable, and the operating parameters of each actuating mechanism of a pre-shrinking device can be adjusted and controlled in real time according to the preset density or the shrinkage.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a fabric density and shrinkage ratio on-line measuring and control system, is including processing the fabric in order to obtain the equipment that contracts in advance that accords with the finished product fabric that predetermines density or shrinkage ratio requirement, the equipment that contracts in advance is close to fabric input one side and is close to fabric output one side and is equipped with first detection device and the second detection device that is used for shooting the fabric image on line in real time respectively, it still is equipped with on the equipment that contracts in advance:
the calculating unit is used for receiving the image data of the first detecting device and the second detecting device and calculating and processing to obtain weft density data or weft shrinkage data of the fabric;
the safety detection device is used for detecting the conveying state of the fabric in the pre-shrinking equipment;
and the control unit is used for receiving the weft density data or weft shrinkage data obtained by the calculation unit, comparing the weft density data or weft shrinkage data with preset weft density or weft shrinkage respectively, and controlling the executing mechanism of the preshrinking equipment to make adjustment in real time according to a comparison result so as to enable the weft density or weft shrinkage of the processed fabric to meet preset requirements.
The executing mechanism comprises a centering mechanism, an overfeeding mechanism, a rubber blanket mechanism, a roller mechanism, a heating mechanism and a woolen blanket mechanism which are sequentially arranged along the conveying direction of the fabric, the first detection device is positioned between the fabric input end of the pre-shrinking device and the rubber blanket mechanism, the second detection device is positioned between the outlet of the woolen blanket mechanism and the fabric output end of the pre-shrinking device, and the safety detection device is positioned between the rubber blanket mechanism and the woolen blanket mechanism.
The fabric pre-shrinking device comprises a pre-shrinking device, a calculating unit, a control unit and an executing mechanism, wherein the pre-shrinking device is provided with a third detecting device and a fourth detecting device which are used for shooting fabric images in real time on line, the calculating unit is electrically connected with the third detecting device and the fourth detecting device respectively, the calculating unit receives image data of the third detecting device and the fourth detecting device and calculates and processes the image data to obtain width data or warp shrinkage data of the fabric, the control unit receives the width data or warp shrinkage data obtained by the calculating unit and compares the width data or warp shrinkage data with preset width or warp shrinkage, and the control unit controls the executing mechanism of the pre-shrinking device to adjust in real time according to a comparison result so that the width or warp shrinkage of the processed fabric meets preset requirements.
The side of the pre-shrinking device close to the fabric input end and the side of the pre-shrinking device close to the fabric output end are respectively provided with a first tension device and a second tension device which are used for detecting and controlling the tension of the fabric, the first tension device comprises a first tension detection device for detecting the tension of the fabric, the first tension device also comprises a first tension control mechanism which is matched with the centering mechanism or the overfeeding mechanism to adjust and control the tension of the fabric, a driving roller and a fabric swinging mechanism are sequentially arranged between the second tension device and the fabric output end of the pre-shrinking device along the conveying direction of the fabric, the second tension device comprises a second tension detection device for detecting the tension of the fabric, the second tension device also comprises a second tension control mechanism which is matched with the driving roller and the fabric swinging mechanism to adjust and control the tension of the fabric.
First detection device perhaps second detection device including image acquisition device and with image acquisition device complex light source board, the light source board is including panel and slide rail, be connected with its gliding sliding seat relatively on the slide rail, the relative both sides of panel are equipped with rotates the rotation post of being connected with the sliding seat rotation, be equipped with the light emitting source on the panel.
The safety detection device is positioned between the rubber blanket mechanism and the woolen blanket mechanism, and the safety detection device is a distance measurement sensor for measuring the distance between the fabric and the safety detection device, or the safety detection device is a tension detection device for measuring the tension of the fabric.
An on-line detection and control method for fabric density and shrinkage ratio specifically comprises the following steps:
step A: the method comprises the steps that a first detection device shoots a fabric before processing to obtain first image data, a preshrinking device carries out preshrinking processing on the fabric, and a second detection device shoots the processed fabric to obtain second image data;
and B: the calculating unit respectively carries out image processing calculation on the first image data and the second image data to obtain a first weft density D1 before the fabric is processed and a second weft density D2 after the fabric is processed, and the calculating unit calculates the weft shrinkage rate of the current shooting area of the fabric after the fabric is processed by preshrinking equipment according to the first weft density D1 and the second weft density D2
And C: repeating the step A and the step B when the fabric is conveyed forwards, and realizing online real-time detection of the first weft density D1, the second weft density D2 and the weft shrinkage S1 of the fabric;
step D: if the second weft density D2 is controlled to be equal to the preset weft density D0, the control unit increases the pressure of the rubber blanket mechanism in advance to increase D2, when D2 is larger than D0, the control unit keeps the pressure of the rubber blanket mechanism unchanged and increases the running speed of the rubber blanket mechanism to reduce D2, and when D2 is equal to D00When the speed of the blanket mechanism is not changed, the control unit maintains the running speed of the blanket mechanism to be unchanged, and when D is higher than the preset speed, the control unit controls the blanket mechanism to run at the same speed2Is less than D0When the running speed of the woolen blanket mechanism is not lower than the preset safety threshold value, the control unit reduces the running speed of the woolen blanket mechanism, and when D is higher than the preset safety threshold value2Is less than D0When the running speed of the blanket mechanism is lower than a preset safety threshold, the control unit maintains the running speed of the blanket mechanism above the preset safety threshold and increases the pressure of the rubber blanket mechanism or reduces the running speed of the overfeeding mechanism; if the weft shrinkage S is to be controlled1Equal to the preset weft shrinkage S0When S is1Less than S0While the control unit increases the pressure of the rubber blanket mechanism to S1Increase when S1Is equal to S0When the pressure of the rubber blanket mechanism is kept unchanged and the speed ratio of the overfeeding mechanism to the blanket mechanism is kept unchanged, the control unit controls the control unit to keep the pressure of the rubber blanket mechanism unchanged and keep the speed ratio of the overfeeding mechanism to the blanket mechanism unchanged when S is detected1Greater than S0When this occurs, the control unit reduces the pressure of the rubber blanket mechanism.
The method for detecting and controlling the density and the shrinkage of the fabric on line can be used for detecting and controlling the weft density D and the weft shrinkage S of the fabric on line in real time, and also can comprise the following steps:
in the step A, a first tension detection device detects the tension of the fabric before processing in real time, and a second tension detection device detects the tension of the fabric after processing in real time;
in step D, when the tension detected by the first tension detection device is greater than a preset value, the control unit controls the first tension control mechanism and the overfeeding mechanism or the centering mechanism to synchronously accelerate, when the tension detected by the first tension detection device is less than the preset value, the control unit controls the first tension control mechanism and the overfeeding mechanism or the centering mechanism to synchronously decelerate, when the tension detected by the first tension detection device is equal to the preset value, the control unit maintains the running speeds of the first tension control mechanism and the overfeeding mechanism or the centering mechanism unchanged, when the tension detected by the second tension detection device is greater than the preset value, the control unit controls the second tension control mechanism, the active roll and the fabric swinging mechanism to synchronously accelerate, and when the tension detected by the second tension detection device is less than the preset value, the control unit controls the second tension control mechanism, The driving roller and the fabric swinging mechanism are synchronously decelerated, and when the tension detected by the second tension detection device is equal to a preset value, the control unit maintains the running speeds of the second tension control mechanism, the driving roller and the fabric swinging mechanism unchanged.
The other method for detecting and controlling the density and the shrinkage of the fabric on line comprises the following steps:
step A: the third detection device shoots the fabric before processing to obtain third image data, the preshrinking equipment carries out preshrinking processing on the fabric, and the fourth detection device shoots the processed fabric to obtain fourth image data;
and B: the calculating unit respectively carries out image processing calculation on the third image data and the fourth image data to obtain a first width W of the fabric before being processed1And a second width W after processing2The calculation unit calculates the first width W1And a second width W2Calculating the radial shrinkage of the current shooting area of the fabric after being processed by pre-shrinking equipment
And C: repeating the step A and the step B when the fabric is conveyed forwards, and realizing the online real-time detection of the first width W of the fabric1A second width W2Radial shrinkage F1；
Step D: if the second width W is to be controlled2Equal to the preset width W0Or radial shrinkage F1Equal to the predetermined warp shrinkage F0When W is2Greater than W0Or F1Greater than F0When the control unit decreases the running speed of the overfeed mechanism, when W2Is less than W0Or F1Less than F0When the control unit increases the running speed of the overfeeding mechanism, when W2Is equal to W0Or F1Is equal to F0And meanwhile, the control unit maintains the running speed of the overfeeding mechanism unchanged.
The method for detecting and controlling the density and the shrinkage of the fabric on line can be used for detecting and controlling the width W and the radial shrinkage F of the fabric on line in real time, and also can comprise the following steps:
in the step A, a first tension detection device detects the tension of the fabric before processing in real time, and a second tension detection device detects the tension of the fabric after processing in real time;
in step D, when the tension detected by the first tension detection device is greater than a preset value, the control unit controls the first tension control mechanism and the overfeeding mechanism or the centering mechanism to synchronously accelerate, when the tension detected by the first tension detection device is less than the preset value, the control unit controls the first tension control mechanism and the overfeeding mechanism or the centering mechanism to synchronously decelerate, when the tension detected by the first tension detection device is equal to the preset value, the control unit maintains the running speeds of the first tension control mechanism and the overfeeding mechanism or the centering mechanism unchanged, when the tension detected by the second tension detection device is greater than the preset value, the control unit controls the second tension control mechanism, the active roll and the fabric swinging mechanism to synchronously accelerate, and when the tension detected by the second tension detection device is less than the preset value, the control unit controls the second tension control mechanism, The driving roller and the fabric swinging mechanism are synchronously decelerated, and when the tension detected by the second tension detection device is equal to a preset value, the control unit maintains the running speeds of the second tension control mechanism, the driving roller and the fabric swinging mechanism unchanged.
The invention has the beneficial effects that:
1. the device can detect the weft density and the weft shrinkage of the fabric before and after being processed in real time on line, and can adjust and control the actuating mechanism of the pre-shrinking device in real time according to the preset weft density or weft shrinkage, so that the processed fabric can meet the requirements of the production process, and the device has the advantages of simple structure, high processing efficiency and high automation degree.
2. The invention can also detect the width and the radial shrinkage of the fabric before and after being processed in real time on line, and can adjust and control the actuating mechanism of the pre-shrinking device in real time according to the preset width or radial shrinkage, so that the processed fabric can meet the requirements of the production process, the structure is simpler, the processing efficiency is higher, and the automation degree is higher.
3. The tension detection device can detect the tension of the fabric with larger elasticity in the conveying process in real time, and can adjust and control the actuating mechanism of the pre-shrinking device in real time according to the preset tension stability requirement, so that the structure is simpler, the processing efficiency is higher, and the automation degree is higher.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 4 is a schematic view of a light source board;
fig. 5 is an exploded view of fig. 4.
[ detailed description of the invention ]
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings, but the invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, an online detection and control system for fabric density and shrinkage includes a preshrinking device 1 for processing a fabric 4 to obtain a finished fabric meeting a preset density or shrinkage requirement, a first detection device 21 and a second detection device 22 for online real-time shooting an image of the fabric 4 are respectively disposed on one side of the preshrinking device 1 close to a fabric input end and one side of the preshrinking device 1 close to a fabric output end, and the preshrinking device 1 is further provided with:
the calculating unit 6 is used for receiving the image data of the first detecting device 21 and the second detecting device 22 and calculating and processing to obtain weft density data or weft shrinkage data of the fabric 4;
a safety detection device 20 for detecting the transport state of the fabric 4 inside the pre-shrinking apparatus 1;
and the control unit 7 is used for receiving the weft density data or weft shrinkage data obtained by the calculation unit 6, comparing the weft density data or weft shrinkage data with preset weft density or weft shrinkage respectively, and controlling the executing mechanism of the preshrinking device 1 to make adjustment according to a comparison result in real time so as to enable the weft density or weft shrinkage of the processed fabric 4 to meet preset requirements.
In the first embodiment, after the first detecting device 21 and the second detecting device 22 are fixed on the presetting device 1, the distance between the first detecting device 21 and the second detecting device 22 along the conveying path of the fabric 4 can be determined, when the same area of the fabric 4 successively reaches the first detecting device 21 and the second detecting device 22, the first detecting device 21 and the second detecting device 22 respectively shoot the area to obtain the image data of the area before being processed and the image data after being processed, the calculating unit 6 can obtain the weft density of the area before being processed, the weft density after being processed and the weft shrinkage rate after being processed by calculating the image data, because the first detecting device 21 and the second detecting device 22 always shoot in real time during the conveying process of the fabric 4, the calculating unit 6 always calculates and processes the image data and stores the weft density before being processed, the weft density after being processed and the weft shrinkage rate of each area of the fabric 4 for the control unit 7 to use, the control unit 7 adjusts and controls each executing mechanism of the preshrinking device 1 according to the difference between the weft density and the weft shrinkage rate of the processed area of the current fabric 4 and the preset weft density and weft shrinkage rate, so that the weft density and the weft shrinkage rate of the processed area of the subsequent fabric 4 meet the preset requirements, and the fabric processing device is simple in structure, high in processing efficiency and high in automation degree.
The executing mechanism comprises a centering mechanism 11, an overfeeding mechanism 12, a rubber blanket mechanism 13, a roller mechanism 14, a heating mechanism 15 and a woolen blanket mechanism 16 which are sequentially arranged along the conveying direction of the fabric 4, the first detection device 21 is positioned between the fabric input end of the pre-shrinking device 1 and the rubber blanket mechanism 13, so that the measured weft density of the fabric 4 before being processed is more accurate and reliable, the second detection device 22 is positioned between the outlet of the woolen blanket mechanism 16 and the fabric output end of the pre-shrinking device 1, so that the measured weft density of the fabric 4 after being processed is more accurate and more real and accurate, the weft shrinkage calculated by the weft density is more accurate, and the safety detection device 20 is positioned between the rubber blanket mechanism 13 and the woolen blanket mechanism 16.
The preshrinking device 1 is provided with a third detection device 23 and a fourth detection device 24 respectively at one side close to the fabric input end and one side close to the fabric output end for shooting the fabric 4 image on line in real time, the calculating unit 6 is electrically connected to the third detecting device 23 and the fourth detecting device 24 respectively, the calculating unit 6 receives the image data of the third detecting device 23 and the fourth detecting device 24 and calculates and processes the data to obtain the width data or warp shrinkage data of the fabric 4, the control unit 7 receives the width data or warp shrinkage data obtained by the calculation unit 6 and compares the width data or warp shrinkage data with preset width or warp shrinkage, and the control unit 7 controls the actuating mechanism of the pre-shrinking device 1 to make adjustment in real time according to the comparison result so as to enable the width or warp shrinkage of the processed fabric 4 to meet the preset requirement.
In the second embodiment, the third detecting device 23 is located between the fabric input end of the pre-shrinking apparatus 1 and the rubber blanket mechanism 13 and close to the first detecting device 21, so that the measured width of the fabric 4 before being processed is more accurate and reliable, the fourth detecting device 24 is located between the outlet of the blanket mechanism 16 and the fabric output end of the pre-shrinking apparatus 1 and close to the second detecting device 22, so that the measured width of the fabric 4 after being processed is more accurate and reliable, and the radial shrinkage calculated from the width is more real and accurate. After the positions of the third detection device 23 and the fourth detection device 24 on the preset device 1 are fixed, the distance between the third detection device 23 and the fourth detection device 24 along the conveying path of the fabric 4 can be determined, when the same area of the fabric 4 successively reaches the third detection device 23 and the fourth detection device 24, the third detection device 23 and the fourth detection device 24 respectively shoot the area to obtain the image data before the area is processed and the image data after the area is processed, the width of the area before the area is processed, the width of the area after the area is processed and the warp shrinkage can be obtained through calculation and processing of the calculation unit 6, because the third detection device 23 and the fourth detection device 24 always shoot in real time during the conveying process of the fabric 4, the calculation unit 6 always calculates and processes the image data and stores the width of the area before the area is processed, the width after the area is processed and the warp shrinkage for the control unit 7 to use, the control unit 7 adjusts and controls each executing mechanism of the pre-shrinking device 1 according to the difference between the width and the warp shrinkage of the processed area of the fabric 4 and the preset width and warp shrinkage, so that the width and the warp shrinkage of the processed area of the subsequent area to be processed of the fabric 4 meet the preset requirements, the structure is simpler, the processing efficiency is higher, and the automation degree is higher.
The pre-shrinking device 1 is provided with a first tension device 31 and a second tension device 32 on one side close to a fabric input end and one side close to a fabric output end respectively, the first tension device 31 comprises a first tension detection device 311 for detecting the tension of the fabric 4, the first tension device 31 further comprises a first tension control mechanism 312 matched with the centering mechanism 11 or the overfeeding mechanism 12 to adjust and control the tension of the fabric 4, a driving roller 17 and a fabric swinging mechanism 18 are sequentially arranged between the second tension device 32 and the fabric output end of the pre-shrinking device 1 along the conveying direction of the fabric 4, the second tension device 32 comprises a second tension detection device 321 for detecting the tension of the fabric 4, and the second tension device 32 further comprises a second tension control mechanism 322 matched with the driving roller 17 and the fabric swinging mechanism 18 to adjust and control the tension of the fabric 4.
In the third embodiment, a first tension device 31 is located between the fabric input end of the pre-shrinking apparatus 1 and the rubber blanket mechanism 13 and close to the first detection device 21, and a second tension device 32 is located between the outlet of the blanket mechanism 16 and the fabric output end of the pre-shrinking apparatus 1 and close to the second detection device 22. The first tension detecting means 311 or the second tension detecting means 321 may be a distance measuring sensor such as a laser sensor or an ultrasonic sensor, or may be a mechanical device with a surface finish bar or a device with a tension bar which relies on gravity detection. The first tension control mechanism 312 or the second tension control mechanism 322 includes a conveying roller and a conveying belt cooperating with the conveying roller, the conveying belt may be a full transparent or intermittent transparent arrangement, the conveying belt is used for carrying and conveying the fabric 4 with a large elasticity, and the conveying roller drives the conveying belt to keep the conveying speed of the conveying belt synchronized with the conveying speed of the fabric 4. The invention can detect the tension of the fabric 4 with larger elasticity in the conveying process in real time, and can adjust and control the actuating mechanism of the preshrinking device 1 in real time according to the preset tension stability requirement, so that the structure is simpler, the processing efficiency is higher, and the automation degree is higher.
As shown in fig. 4 and 5, the first detecting device 21 or the second detecting device 22 includes an image collecting device and a light source board 8 matched with the image collecting device, the light source board 8 includes a panel 81 and a slide rail 82, the slide rail 82 is connected with a sliding seat 83 capable of sliding relative to the panel, two opposite sides of the panel 81 are provided with rotating posts 84 rotatably connected with the sliding seat 83, and the panel 81 is provided with a light emitting source 85.
The third detecting device 23 or the fourth detecting device 24 also includes an image capturing device and a light source board 8 cooperating with the image capturing device. When the light emitting source 85 is a backlight, the light source plate 8 and the camera are respectively located on both sides of the fabric 4; when the light emitting source 85 is the primary light source, the light source board 8 and the camera are located on the same side of the fabric 4. The light source 85 may be a single light source, several light sources arranged in parallel, or a strip light source. The light source plate 8 can be adjusted in multiple directions, so that images shot by the image acquisition device are clearer and more reliable. The image acquisition device may be an industrial camera or a webcam. An electric fan 86 for radiating the light from the light source 85 may be connected to the panel 81.
The safety detection device 20 is located between the rubber blanket mechanism 13 and the blanket mechanism 16, the safety detection device 20 is a distance measurement sensor for measuring a distance between the fabric 4 and the safety detection device, or the safety detection device 20 is a tension detection device for measuring a tension of the fabric 4.
The distance measuring sensor may be a laser sensor or an ultrasonic sensor and the tension detecting means may be a mechanical device with a smooth surface bar or a device with a tension bar which relies on gravity detection. The safety detection device 20 can detect the conveying state of the fabric 4 in the pre-shrinking device 1 in real time, so as to avoid that the fabric 4 is excessively pulled due to the excessively high running speed of the blanket mechanism 16 and prevent the fabric 4 from drooping and contacting the ground due to the excessively high running speed of the rubber blanket mechanism 13.
The display screen 5 is located on one side of the fabric output end of the pre-shrinking device 1 and is used for displaying measured weft density data, weft shrinkage rate data, width data and warp shrinkage rate data in real time and operating parameters of each executing mechanism of the pre-shrinking device 1.
An online detection and control method for fabric density and shrinkage ratio specifically comprises the following steps:
step A: the first detection device 21 shoots the fabric 4 before processing to obtain first image data, the preshrinking device 1 carries out preshrinking processing on the fabric 4, and the second detection device 22 shoots the processed fabric 4 to obtain second image data;
and B: the calculation unit 6 respectively performs image processing on the first image data and the second image data to calculate a first weft density D before the fabric 4 is processed1And a second weft density D after processing2The calculating unit 6 calculates the density D of the first weft direction1And a second weft density D2Calculating the weft shrinkage of the fabric 4 after the current shooting area is processed by the pre-shrinking device 1
And C: repeating the step A and the step B when the fabric 4 is conveyed forwards, and realizing the online real-time detection of the first weft density D of the fabric 41Second weft density D2Shrinkage in weft direction S1；
Step D: if the second weft density D is to be controlled2Equal to the preset weft density D0The control unit 7 increases the pressure of the rubber blanket mechanism 13 in advance so that D is2Increase when D2Greater than D0At this time, the control unit 7 keeps the pressure of the rubber blanket mechanism 13 constant and increases the operation speed of the blanket mechanism 16 so that D is equal to2Decrease when D2Is equal to D0While the control unit 7 maintains the running speed of the blanket mechanism 16 unchanged, when D is2Is less than D0And the running speed of the blanket mechanism 16 is not lower than the preset safety thresholdWhen the value is positive, the control unit 7 reduces the running speed of the carpet mechanism 16, when D2Is less than D0When the running speed of the blanket mechanism 16 is lower than the preset safety threshold, the control unit 7 maintains the running speed of the blanket mechanism 16 above the preset safety threshold and increases the pressure of the rubber blanket mechanism 13 or decreases the running speed of the overfeeding mechanism 12; if the weft shrinkage S is to be controlled1Equal to the preset weft shrinkage S0When S is1Less than S0At this time, the control unit 7 increases the pressure of the rubber blanket mechanism 13 to S1Increase when S1Is equal to S0When the pressure of the rubber blanket mechanism 13 is kept unchanged and the speed ratio of the overfeeding mechanism 12 to the blanket mechanism 16 is kept unchanged, the control unit 7 controls the control unit to keep the pressure of the rubber blanket mechanism 13 unchanged and the speed ratio of the overfeeding mechanism 12 to the blanket mechanism 16 unchanged when S is reached1Greater than S0At this time, the control unit 7 reduces the pressure of the rubber blanket mechanism 13.
The method for detecting and controlling the density and the shrinkage of the fabric on line can be used for detecting and controlling the weft density D and the weft shrinkage S of the fabric 4 on line in real time, and can also comprise the following steps:
in step a, the first tension detection device 311 detects the tension of the fabric 4 before processing in real time, and the second tension detection device 321 detects the tension of the fabric 4 after processing in real time;
in step D, when the tension detected by the first tension detecting device 311 is greater than the preset value, the control unit 7 controls the first tension controlling mechanism 312 to accelerate synchronously with the overfeeding mechanism 12 or the centering mechanism 11, when the tension detected by the first tension detecting device 311 is less than the preset value, the control unit 7 controls the first tension controlling mechanism 312 to decelerate synchronously with the overfeeding mechanism 12 or the centering mechanism 11, when the tension detected by the first tension detecting device 311 is equal to the preset value, the control unit 7 maintains the operating speed of the first tension controlling mechanism 312 and the overfeeding mechanism 12 or the centering mechanism 11 unchanged, when the tension detected by the second tension detecting device 321 is greater than the preset value, the control unit 7 controls the second tension controlling mechanism 322, the driving roller 17 and the fabric swinging mechanism 18 to accelerate synchronously, when the tension detected by the second tension detecting device 321 is less than the preset value, the control unit 7 controls the second tension control mechanism 322, the driving roller 17 and the fabric swinging mechanism 18 to synchronously decelerate, and when the tension detected by the second tension detection device 321 is equal to a preset value, the control unit 7 maintains the running speeds of the second tension control mechanism 322, the driving roller 17 and the fabric swinging mechanism 18 unchanged.
The other fabric density and shrinkage on-line detection and control method specifically comprises the following steps:
step A: the third detection device 23 shoots the fabric 4 before processing to obtain third image data, the preshrinking device 1 carries out preshrinking processing on the fabric 4, and the fourth detection device 24 shoots the processed fabric 4 to obtain fourth image data;
and B: the calculating unit 6 respectively carries out image processing calculation on the third image data and the fourth image data to obtain a first width W of the fabric 4 before being processed1And a second width W after processing2The calculation unit 6 calculates the first width W1And a second width W2Calculating the radial shrinkage of the fabric 4 after the current shooting area is processed by the pre-shrinking device 1
And C: repeating the step A and the step B when the fabric 4 is conveyed forwards, and realizing the online real-time detection of the first width W of the fabric 41A second width W2Radial shrinkage F1；
Step D: if the second width W is to be controlled2Equal to the preset width W0Or radial shrinkage F1Equal to the predetermined warp shrinkage F0When W is2Greater than W0Or F1Greater than F0When W is greater, the control unit 7 decreases the operating speed of the overfeed mechanism 122Is less than W0Or F1Less than F0When the control unit 7 increases the running speed of the overfeed mechanism 12, when W2Is equal to W0Or F1Is equal to F0At this time, the control unit 7 maintains the operation speed of the overfeed mechanism 12 constant.
The method for detecting and controlling the density and the shrinkage of the fabric on line can be used for detecting and controlling the width W and the radial shrinkage F of the fabric 4 on line in real time, and can also comprise the following steps:
in step a, the first tension detection device 311 detects the tension of the fabric 4 before processing in real time, and the second tension detection device 321 detects the tension of the fabric 4 after processing in real time;
in step D, when the tension detected by the first tension detecting device 311 is greater than the preset value, the control unit 7 controls the first tension controlling mechanism 312 to accelerate synchronously with the overfeeding mechanism 12 or the centering mechanism 11, when the tension detected by the first tension detecting device 311 is less than the preset value, the control unit 7 controls the first tension controlling mechanism 312 to decelerate synchronously with the overfeeding mechanism 12 or the centering mechanism 11, when the tension detected by the first tension detecting device 311 is equal to the preset value, the control unit 7 maintains the operating speed of the first tension controlling mechanism 312 and the overfeeding mechanism 12 or the centering mechanism 11 unchanged, when the tension detected by the second tension detecting device 321 is greater than the preset value, the control unit 7 controls the second tension controlling mechanism 322, the driving roller 17 and the fabric swinging mechanism 18 to accelerate synchronously, when the tension detected by the second tension detecting device 321 is less than the preset value, the control unit 7 controls the second tension control mechanism 322, the driving roller 17 and the fabric swinging mechanism 18 to synchronously decelerate, and when the tension detected by the second tension detection device 321 is equal to a preset value, the control unit 7 maintains the running speeds of the second tension control mechanism 322, the driving roller 17 and the fabric swinging mechanism 18 unchanged.
The technical features of the above-mentioned embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present description should be considered as being described in the present specification.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A fabric density and shrinkage on-line detection and control system is characterized in that: including processing in order to obtain the preshrinking equipment (1) that accords with the finished product fabric that predetermines density or shrinkage requirement to fabric (4), preshrinking equipment (1) is close to fabric input one side and is close to fabric output one side and is equipped with first detection device (21) and second detection device (22) that are used for shooting fabric (4) image on line in real time respectively, still be equipped with on the preshrinking equipment (1):
the calculating unit (6) is used for receiving the image data of the first detecting device (21) and the second detecting device (22) and calculating and processing weft density data or weft shrinkage data of the fabric (4);
safety detection means (20) for detecting the transport condition of the fabric (4) inside the pre-shrinking device (1);
and the control unit (7) is used for receiving the weft density data or weft shrinkage data obtained by the calculation unit (6), comparing the weft density data or weft shrinkage data with preset weft density or weft shrinkage respectively, and controlling the executing mechanism of the preshrinking equipment (1) to make adjustment so as to meet preset requirements on the weft density or weft shrinkage of the processed fabric (4) in real time according to a comparison result.
2. The on-line detection and control system for fabric density and shrinkage as claimed in claim 1, wherein: the actuating mechanism comprises a centering mechanism (11), an overfeeding mechanism (12), a rubber blanket mechanism (13), a roller mechanism (14), a heating mechanism (15) and a blanket mechanism (16) which are sequentially arranged along the conveying direction of the fabric (4), a first detection device (21) is positioned between the fabric input end of the pre-shrinking device (1) and the rubber blanket mechanism (13), a second detection device (22) is positioned between the outlet of the blanket mechanism (16) and the fabric output end of the pre-shrinking device (1), and a safety detection device (20) is positioned between the rubber blanket mechanism (13) and the blanket mechanism (16).
3. The on-line detection and control system for fabric density and shrinkage as claimed in claim 1 or 2, wherein: the fabric width and warp shrinkage ratio pre-shrinking device comprises a pre-shrinking device (1), wherein a third detection device (23) and a fourth detection device (24) which are used for shooting images of a fabric (4) in an online real-time mode are respectively arranged on one side, close to a fabric input end, of the pre-shrinking device (1) and on one side, close to a fabric output end, of the pre-shrinking device, a calculation unit (6) is electrically connected with the third detection device (23) and the fourth detection device (24), the calculation unit (6) receives image data of the third detection device (23) and the fourth detection device (24) and calculates and processes the image data to obtain width data or warp shrinkage ratio data of the fabric (4), the control unit (7) receives the width data or the warp shrinkage ratio data obtained by the calculation unit (6) and compares the width data or the warp shrinkage ratio data with a preset width or warp shrinkage ratio, and the control unit (7) controls an execution mechanism of the pre-shrinking device (1) to make adjustment in real time according to enable the width or the warp.
4. The on-line detection and control system for fabric density and shrinkage as claimed in claim 1 or 2, wherein: the fabric pre-shrinking device is characterized in that a first tension device (31) and a second tension device (32) which are used for detecting and controlling the tension of the fabric (4) are respectively arranged on one side, close to the fabric input end, of the pre-shrinking device (1) and one side, close to the fabric output end, of the pre-shrinking device (1), the first tension device (31) comprises a first tension detection device (311) which is used for detecting the tension of the fabric (4), the first tension control mechanism (312) which is matched with the centering mechanism (11) or the overfeeding mechanism (12) to adjust and control the tension of the fabric (4) is further comprised by the first tension device (31), a driving roller (17) and a fabric swinging mechanism (18) are sequentially arranged between the second tension device (32) and the fabric output end of the pre-shrinking device (1) along the conveying direction of the fabric (4), and the second tension detection device (321) which is used for detecting the tension of the fabric (, the second tension device (32) also comprises a second tension control mechanism (322) which is matched with the driving roller (17) and the fabric swinging mechanism (18) to adjust and control the tension of the fabric (4).
5. The on-line detection and control system for fabric density and shrinkage as claimed in claim 1 or 2, wherein: first detection device (21) or second detection device (22) including image acquisition device and with image acquisition device complex light source board (8), light source board (8) are including panel (81) and slide rail (82), be connected with its gliding sliding seat (83) relatively on slide rail (82), the relative both sides of panel (81) are equipped with rotates post (84) of being connected with sliding seat (83), be equipped with light emitting source (85) on panel (81).
6. The on-line detection and control system for fabric density and shrinkage as claimed in claim 2, wherein: the safety detection device (20) is positioned between the rubber blanket mechanism (13) and the woolen blanket mechanism (16), the safety detection device (20) is a distance measurement sensor for measuring the distance between the fabric (4) and the safety detection device, or the safety detection device (20) is a tension detection device for measuring the tension of the fabric (4).
7. A fabric density and shrinkage on-line detection and control method is characterized in that:
step A: the method comprises the following steps that a first detection device (21) shoots a fabric (4) before processing to obtain first image data, a preshrinking device (1) conducts preshrinking processing on the fabric (4), and a second detection device (22) shoots the processed fabric (4) to obtain second image data;
and B: the calculation unit (6) respectively carries out image processing calculation on the first image data and the second image data to obtain a first weft density D of the fabric (4) before being processed1And a second weft density D after processing2Calculating the density D of the first weft direction by the unit (6)1And a second weft density D2Calculating the weft shrinkage of the fabric (4) after the current shooting area is processed by the preshrinking equipment (1)
And C: repeating the step A and the step B when the fabric (4) is conveyed forwards, and realizing the online real-time detection of the first weft density D of the fabric (4)1Second weft density D2Shrinkage in weft direction S1；
Step D: if the second weft density D is to be controlled2Equal to the preset weft density D0The control unit (7) increases the pressure of the rubber blanket mechanism (13) in advance to enable D2Increase when D2Greater than D0While the pressure of the rubber blanket mechanism (13) is kept constant, the control unit (7) increases the running speed of the rubber blanket mechanism (16) to enable D2Decrease when D2Is equal to D0When the speed of the blanket mechanism (16) is not changed, the control unit (7) maintains the running speed of the blanket mechanism (16), and when D is higher than the preset value2Is less than D0When the running speed of the woolen blanket mechanism (16) is not lower than the preset safety threshold value, the control unit (7) reduces the running speed of the woolen blanket mechanism (16), and when D is higher than the preset safety threshold value2Is less than D0When the running speed of the blanket mechanism (16) is lower than a preset safety threshold, the control unit (7) maintains the running speed of the blanket mechanism (16) above the preset safety threshold and increases the pressure of the rubber blanket mechanism (13) or reduces the running speed of the overfeeding mechanism (12); if the weft shrinkage S is to be controlled1Equal to the preset weft shrinkage S0When S is1Less than S0When the pressure of the rubber blanket mechanism (13) is increased by the control unit (7) to S1Increase when S1Is equal to S0When the pressure of the rubber blanket mechanism (13) is kept unchanged and the speed ratio of the overfeeding mechanism (12) to the blanket mechanism (16) is kept unchanged, the control unit (7) keeps the pressure of the rubber blanket mechanism (13) unchanged, and when S is up to the set point1Greater than S0When the pressure of the rubber blanket mechanism (13) is reduced, the control unit (7) reduces the pressure.
8. The on-line detection and control method for the fabric density and the shrinkage rate according to claim 7, characterized in that:
in the step A, a first tension detection device (311) detects the tension of the fabric (4) before processing in real time, and a second tension detection device (321) detects the tension of the fabric (4) after processing in real time;
in step D, when the tension detected by the first tension detection device (311) is greater than a preset value, the control unit (7) controls the first tension control mechanism (312) to accelerate synchronously with the overfeeding mechanism (12) or the centering mechanism (11), when the tension detected by the first tension detection device (311) is less than the preset value, the control unit (7) controls the first tension control mechanism (312) to decelerate synchronously with the overfeeding mechanism (12) or the centering mechanism (11), when the tension detected by the first tension detection device (311) is equal to the preset value, the control unit (7) maintains the running speeds of the first tension control mechanism (312) and the overfeeding mechanism (12) or the centering mechanism (11) unchanged, and when the tension detected by the second tension detection device (321) is greater than the preset value, the control unit (7) controls the second tension control mechanism (322), The driving roller (17) and the fabric swinging mechanism (18) are accelerated synchronously, when the tension detected by the second tension detection device (321) is smaller than a preset value, the control unit (7) controls the second tension control mechanism (322), the driving roller (17) and the fabric swinging mechanism (18) to decelerate synchronously, and when the tension detected by the second tension detection device (321) is equal to the preset value, the control unit (7) maintains the running speeds of the second tension control mechanism (322), the driving roller (17) and the fabric swinging mechanism (18) unchanged.
9. A fabric density and shrinkage on-line detection and control method is characterized in that:
step A: the third detection device (23) shoots the fabric (4) before processing to obtain third image data, the preshrinking equipment (1) carries out preshrinking processing on the fabric (4), and the fourth detection device (24) shoots the processed fabric (4) to obtain fourth image data;
and B: the calculating unit (6) respectively carries out image processing calculation on the third image data and the fourth image data to obtain a first width W of the fabric (4) before being processed1And a second width W after processing2The calculation unit (6) calculates the first width W1And a second width W2Calculating the radial shrinkage of the current camera shooting area of the fabric (4) after being processed by the pre-shrinking device (1)
And C: repeating the step A and the step B when the fabric (4) is conveyed forwards, and realizing the online real-time detection of the first width W of the fabric (4)1A second width W2Radial shrinkage F1；
Step D: if the second width W is to be controlled2Equal to the preset width W0Or radial shrinkage F1Equal to the predetermined warp shrinkage F0When W is2Greater than W0Or F1Greater than F0When the control unit (7) decreases the running speed of the overfeed mechanism (12), when W2Is less than W0Or F1Less than F0When the speed of the overfeed mechanism (12) is increased, the control unit (7) increases the speed of the overfeed mechanism (12) when W2Is equal to W0Or F1Is equal to F0During the operation, the control unit (7) maintains the running speed of the overfeeding mechanism (12) unchanged.
10. The on-line detection and control method for the fabric density and the shrinkage rate according to claim 9, characterized in that:
in the step A, a first tension detection device (311) detects the tension of the fabric (4) before processing in real time, and a second tension detection device (321) detects the tension of the fabric (4) after processing in real time;
in step D, when the tension detected by the first tension detection device (311) is greater than a preset value, the control unit (7) controls the first tension control mechanism (312) to accelerate synchronously with the overfeeding mechanism (12) or the centering mechanism (11), when the tension detected by the first tension detection device (311) is less than the preset value, the control unit (7) controls the first tension control mechanism (312) to decelerate synchronously with the overfeeding mechanism (12) or the centering mechanism (11), when the tension detected by the first tension detection device (311) is equal to the preset value, the control unit (7) maintains the running speeds of the first tension control mechanism (312) and the overfeeding mechanism (12) or the centering mechanism (11) unchanged, and when the tension detected by the second tension detection device (321) is greater than the preset value, the control unit (7) controls the second tension control mechanism (322), The driving roller (17) and the fabric swinging mechanism (18) are accelerated synchronously, when the tension detected by the second tension detection device (321) is smaller than a preset value, the control unit (7) controls the second tension control mechanism (322), the driving roller (17) and the fabric swinging mechanism (18) to decelerate synchronously, and when the tension detected by the second tension detection device (321) is equal to the preset value, the control unit (7) maintains the running speeds of the second tension control mechanism (322), the driving roller (17) and the fabric swinging mechanism (18) unchanged.
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| CN202010577014.5A CN111595847A (en) | 2020-06-23 | 2020-06-23 | Fabric density and shrinkage online detection and control system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911800A (en) * | 2021-11-15 | 2022-01-11 | 常州宏大智能装备产业发展研究院有限公司 | Intelligent control method and device for pre-shrinking rate of pre-shrunk woven fabric |
| CN115434063A (en) * | 2021-10-26 | 2022-12-06 | 中裕软管科技股份有限公司 | Double-machine synchronous weaving device and control method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434063A (en) * | 2021-10-26 | 2022-12-06 | 中裕软管科技股份有限公司 | Double-machine synchronous weaving device and control method |
| CN113911800A (en) * | 2021-11-15 | 2022-01-11 | 常州宏大智能装备产业发展研究院有限公司 | Intelligent control method and device for pre-shrinking rate of pre-shrunk woven fabric |
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