Color difference visual detection device and method for wet steaming low-salt dyeing processing of polyester-viscose fabric

Abstract

The invention discloses a chromatic aberration visual detection device and method for polyester-viscose fabric wet steaming low-salt dyeing processing, and relates to the technical field of chromatic aberration detection.The chromatic aberration visual detection device comprises a machine body, visual equipment and a light source, and the height of the machine body can be adjusted so that the detection device can be installed on one side of equipment in any process step of polyester-viscose fabric dyeing processing; the visual equipment and the light source are correspondingly arranged up and down, in order to prevent the visual equipment from being influenced by detection when the polyester-viscose fabric is not completely dried, the visual equipment is arranged above the light source, further, a cover body is arranged on the outer side of the light source, and the cover body covers the outer side of the light source to change the scattering state of the light source; when the polyester-viscose fabric is conveyed by the detection device, the polyester-viscose fabric is attached to part of the outer surface of the cover body. The protruding height, the supporting position and the tensile elongation rate of the fabric can be accurately controlled through the jacking piece and the traction mechanism, and the chromatic aberration response of the fabric in different deformation states can be quantified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of color difference detection, in particular to a color difference visual detection device and method for polyester-viscose fabric wet steaming and low-salt dyeing processing. BACKGROUND

[0002] For polyester-viscose blended fabric, the commonly used wet steaming and low-salt dyeing route mainly adopts the "composite dyeing (dispersion dye for polyester, reactive or direct dye for viscose)" or "co-dyeing + crosslinking / post-treatment" method. The low-salt strategy is realized by optimizing the sizing concentration, improving the activity and dispersibility of dyes, using additives (dispersants, sizing aids, dyeing accelerators), and using wet steaming / steam fixation or pad-steam (sizing-steam), which can significantly reduce salt consumption, save water and energy, and improve color fastness and color uniformity.

[0003] Publication No. CN223229471U discloses a fabric color difference detection device, which comprises a fabric conveying belt and a color difference detection camera. The top of the fabric conveying belt is provided with a self-cleaning detection mechanism, and the top of the fabric conveying belt is provided with a fabric flattening mechanism. The self-cleaning detection mechanism comprises a support frame fixedly installed on the top of the fabric conveying belt, a support sleeve fixedly installed on the front surface of the support frame, and a detection cylinder fixedly installed on the inner wall of the support sleeve. Through the design of the ion air blower, external air can be absorbed and then delivered to the inner cavity of the hollow pipe through the flexible air pipe. The air is then sprayed from the nozzle to the bottom of the transparent plate, blowing off the debris attached to the bottom of the transparent plate, ensuring the effect of the color difference detection camera on fabric color difference detection, and avoiding the need for frequent manual cleaning of the bottom of the transparent plate, thereby reducing labor consumption.

[0004] During color difference detection, a color difference meter or image contrast and computer vision detection are usually used. During detection, fabric samples need to be taken, and then the sample fabric is placed in the detection position for color difference detection.

[0005] During the dyeing process of polyester-viscose fabric, secondary dyeing or supplementary dyeing is usually required to avoid the problem of insufficient dyeing of viscose fibers. After steam fixation, the polyester-viscose fabric is observed manually to determine whether secondary dyeing is needed. However, manual observation of obvious color difference cannot obtain the color difference problem of polyester-viscose fabric under different elasticity. SUMMARY

[0006] One of the purposes of the present application is to provide a color difference visual detection device and method for polyester-viscose fabric wet steaming and low-salt dyeing processing, which can be set in any process of polyester-viscose fabric dyeing, detect the color difference of polyester-viscose fabric, and change the elasticity of different positions of polyester-viscose fabric to obtain the color difference change of polyester-viscose fabric under different elasticity.

[0007] In order to achieve the above object, the present application is realized by the following technical scheme: the color difference visual detection device for polyester-viscose fabric wet steaming low-salt dyeing processing, comprising: a machine body, a visual equipment and a light source, the machine body can be adjusted in height to meet the installation of the detection device on the equipment side of any process step of the polyester-viscose fabric dyeing processing, and the color difference detection in the step is realized.

[0008] Further, the visual equipment and the light source are arranged in correspondence with each other, and the visual equipment is arranged above the light source, so as to avoid the influence of the detection on the visual equipment when the polyester-viscose fabric is not completely dried.

[0009] Further, a cover body is arranged outside the light source, and the cover body covers the outside of the light source, so as to change the scattering state of the light source, and the polyester-viscose fabric is attached to the outer surface of the cover body during the conveying by the detection device.

[0010] Further, the cover body rotates synchronously during the conveying of the fabric, so as to avoid the friction between the fabric and the cover body during the conveying, and cause the cover body to be dyed.

[0011] In addition, a cleaning roller is arranged inside the machine body and attached to the surface of the cover body, and the cleaning roller rotates during the rotation of the cover body to clean the surface of the cover body, so as to ensure the good light transmittance of the cover body and avoid the influence of the cover body on the color difference detection.

[0012] Further, a driving unit is arranged outside the cover body, and the driving unit is a driving motor, and the driving motor drives the cover body to rotate at a rotating speed suitable for the conveying speed of the polyester-viscose fabric during the conveying of the polyester-viscose fabric.

[0013] In one embodiment, the cleaning roller is fixed inside the machine body, so as to ensure the stable friction between the cover body and the cleaning roller.

[0014] In another embodiment, the driving unit is connected with the cover body and the cleaning roller through a transmission gear, and the rotating directions of the cover body and the cleaning roller are the same, so that the entire cleaning roller can be used to clean the surface of the cover body.

[0015] Further, pressure rollers are arranged on both sides of the cover body, the pressure rollers extrude the polyester-viscose fabric to maintain the stability of the polyester-viscose fabric during the conveying, the connecting frames are arranged outside the pressure rollers, the connecting frames are hinged to the inside of the machine body, electromagnets are arranged inside the machine body, the electromagnets magnetically attract the connecting pieces, and the clamping force of the pressure rollers on the polyester-viscose fabric is adjusted by the magnetic force of the electromagnets.

[0016] Further, jacks are arranged between the cover body and the pressure rollers, the jacks are arranged at uniform intervals, and the jacks can be raised and lowered in the height direction, when the jacks are raised, the polyester-viscose fabric above the jacks is lifted, and the polyester-viscose fabric is deformed in a convex shape.

[0017] Further, by setting the jacking element on both sides of the cover body, when visual inspection is carried out, the terylene-viscose fabric is jacked up by the jacking element, so that the terylene-viscose fabric is deformed, the color of the terylene-viscose fabric in the deformed state is obtained, and the color difference of the terylene-viscose fabric in the deformed state is determined.

[0018] Further, the plurality of jacking elements are arranged side by side, which can jack up the terylene-viscose fabric at multiple positions, so that the terylene-viscose fabric is deformed at different positions, and the color difference of the terylene-viscose fabric in multiple states is obtained.

[0019] Further, the jacking element comprises a mounting seat mounted on the inner side of the machine body, a top block arranged inside the mounting seat, and an electromagnetic matrix arranged between the mounting seat and the top block, the mounting seat is fixed in the inner side of the machine body, the top block is telescopically mounted in the mounting seat, and the electromagnetic matrix comprises a first electromagnet arranged on the inner wall bottom of the mounting seat and a second electromagnet mounted on the bottom of the mounting seat.

[0020] Further, the magnetic force change of the first electromagnet and the second electromagnet changes the extension height of the top block, and the first electromagnet and the second electromagnet are arranged in multiple.

[0021] Further, the jacking element comprises a mounting seat mounted on the inner side of the machine body, a top block arranged inside the mounting seat, and an electromagnetic matrix arranged between the mounting seat and the top block, the mounting seat is fixed in the inner side of the machine body, the top block is telescopically mounted in the mounting seat, and the electromagnetic matrix comprises a first electromagnet arranged on the inner wall bottom of the mounting seat and a second electromagnet mounted on the bottom of the mounting seat.

[0022] Further, the setting of the telescopic rod can ensure the stable displacement of the top block, that is, how much the telescopic rod supports the displacement of the top block can be directly reflected on the terylene-viscose fabric, which will not be affected by the terylene-viscose fabric, avoiding the situation that the pulling force of the terylene-viscose fabric is insufficient due to the influence of the terylene-viscose fabric.

[0023] Further, the elastic part has at least five support states, each support state corresponds to a support state of the terylene-viscose fabric, wherein the elastic part comprises a shell, a connecting seat, a guide rod, an air cavity and an elastic element, the shell is sleeved on the outside of the fixed part, the top of the shell is made of a deformable material, the connecting seat is arranged on the top of the inner wall of the shell and fixed to the inner wall of the shell, the guide rod extends from the middle of the connecting seat to the inside of the fixed part, the air cavity is opened in the inside of the fixed part, and the guide rod is inserted into the inside of the air cavity, and the elastic element is located in the inside of the air cavity and supports the guide rod.

[0024] Further, a plurality of connecting seats are arranged on the elastic part, each connecting seat corresponds to a support position, and when supporting the terylene-viscose fabric, each connecting seat is raised according to the change of the support position of the jacking element on both sides, so that the terylene-viscose fabric is deformed at different angles.

[0025] Further, the top of the shell is made of deformable material, which can deform when the support position changes, in order to maintain the stability of the shell, the lower part of the shell is made of rigid material, which can ensure the stability of the connection between the shell and the fixed part.

[0026] Further, the fixed part is internally provided with a first electromagnetic block and a second electromagnetic block, the first electromagnetic block is fixed in the fixed part, and the second electromagnetic block is fixed to one end of the guide rod inserted into the fixed part, and the first electromagnetic block cooperates with the second electromagnetic block to change the state of the guide rod.

[0027] Further, the outside of the body is covered with an elastic film, which covers the outside of the jacking piece, and the elastic film is deformed by the telescopic jacking of the top block.

[0028] A color difference detection method for polyester-viscose fabric wet-steam low-salt dyeing processing includes the following steps: Start and calibrate the equipment, confirm the light source and visual equipment in the standard position, complete white balance and color baseline calibration with white board / color block, and check the cover, cleaning roller and driving transmission system state and light transmittance at the same time, set and record the pressure roller clamping force to ensure the traceability and stability of subsequent detection; Send the fabric into the detection device according to the specified direction and firmly clamp it with one end of the pressure roller, start the conveying and synchronously set the cover rotating speed and conveying speed, monitor the fabric adhesion, pick-up and tension in real time, and ensure that there is no measurement deviation caused by slippage, wrinkles or local tightness during fabric conveying; Trigger the jacking piece to generate target deformation according to the preset program, and collect images by the visual equipment located above the cover after keeping stable, perform real-time white balance correction and image preprocessing, calculate and extract chroma values for baseline comparison; According to the preset threshold, automatically determine whether it is qualified or needs to be alarmed, abnormal samples enter the artificial review process and are associated with production batch and parameter records, the cleaning roller regularly cleans the cover to maintain the light transmittance, and the images, color values, jacking parameters, clamping forces and time stamps of each detection are completely saved for traceability and root cause analysis.

[0029] Through the above technical scheme, the present application has the following beneficial effects: 1. The jacking piece and the pulling mechanism can accurately control the protrusion height, support position and stretching elongation rate of the fabric, quantify the color difference response of the fabric under different deformation states, facilitate the evaluation of gloss, migration and wear state color difference problems, and the jacking pieces arranged in parallel allow color difference data of different positions and different support combinations of the fabric to be collected in the same detection period, which significantly improves the detection coverage and fault positioning efficiency.

[0030] 2. By placing the vision device above the enclosure and calibrating it with a standard light source and white balance, the disturbance caused by direct contact between the wet fabric and the optical components is eliminated, the acquisition lighting conditions are stabilized, thereby significantly reducing measurement noise and improving the consistency of quantitative indicators such as ΔE.

[0031] 3. The combination of the rotatable cover and the external cleaning rollers prevents the cover surface from continuously rubbing against the fabric during fabric conveying, and can clean the light-transmitting surface in real time, extending the transparency of the cover and the stable working cycle of the vision system, and reducing the number of downtime maintenance.

[0032] 4. The design of electromagnetic clamping and soft limiting of the pressure roller, and the protective lifting components of the cover and elastic membrane, avoids excessive pressure or friction damage to the fabric in a wet or stretched state, while providing mechanical and optical protection to ensure the safety of equipment and products.

[0033] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0034] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the cover structure of the present invention; Figure 4 This is a schematic diagram of the light source structure of the present invention; Figure 5 This is a schematic diagram of the elastic membrane structure of the present invention; Figure 6 This is a schematic diagram of the installation state of the lifting component of the present invention; Figure 7 This is a schematic diagram of the internal structure of the lifting component of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the internal structure of the lifting component of the present invention. Figure 2 ; Figure 9 This is a schematic diagram of the lifting component of the present invention; Figure 10 This is a schematic diagram of the internal structure of the mounting base of the present invention; Figure 11 This is a cross-sectional view of the shell structure of the present invention; Figure 12 This is a schematic diagram of the air cavity structure of the present invention; Figure 13 This is a schematic diagram of the structure of the first electromagnetic block and the second electromagnetic block of the present invention.

[0035] In the figure: 1 body, 3 light source, 4 cover, 5 top lifting piece; 11 driving unit, 12 pressure roller, 13 connecting frame, 14 electromagnet; 51 mounting seat, 52 top block, 53 electromagnetic matrix; 54 telescopic rod, 55 fixed part, 56 elastic part; 561 shell, 562 connecting seat, 563 guide rod, 564 air cavity, 565 elastic piece, 566 first electromagnetic block, 567 second electromagnetic block; 6 elastic film. DETAILED DESCRIPTION

[0036] In the following, several embodiments of the present application will be disclosed with reference to the accompanying drawings. For the purpose of clear illustration, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. And if possible in practice, features of different embodiments can be applied to each other.

[0037] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. Further, the terms specified above are interpreted in the context of the present application as consistent with the meanings in the relevant art. Unless specifically defined, these terms should not be interpreted as idealized or overly formal meanings.

[0038] The following explains the relationships and terms used in the present application: Parallel: The parallel defined in the present application is not limited to absolute parallel. The definition of parallel can be understood as substantially parallel, allowing for not absolute parallel caused by factors such as assembly tolerance, design tolerance, and structure flatness. A small angle range of error is allowed, for example, within an assembly error range of 10 degrees, which can be understood as a parallel relationship.

[0039] Perpendicular: The perpendicular defined in the present application is not limited to the relationship of absolute perpendicular intersection (included angle of 90 degrees). It allows for not absolute perpendicular intersection caused by factors such as assembly tolerance, design tolerance, and structure flatness. A small angle range of error is allowed, for example, within an assembly error range of 80 to 100 degrees, which can be understood as a perpendicular relationship.

[0040] Ground: The ground defined in the present application is not limited to a ground of a certain material or region. It only represents a platform for carrying the present application, and allows for stacking, tilting, and flatness changes. For example, a cement ground, a ceramic tile ground, a work platform, etc. can be interpreted as a ground.

[0041] The above explanation does not completely contain the relationship definition given in the present application, but only represents part of the present application.

[0042] Referring to Figures 1-13 As shown in the figure, the present application provides a color difference visual detection device for polyester-viscose fabric wet steaming low-salt dyeing processing, which comprises a machine body 1, a visual equipment, and a light source 3. The machine body 1 can be adjusted in height to meet the installation of the detection device on the equipment side of any process step of polyester-viscose fabric dyeing processing, so as to realize color difference detection in the step.

[0043] The visual equipment and the light source 3 are arranged in a corresponding upper and lower manner. In order to avoid affecting the visual equipment when the polyester-viscose fabric is not completely dried, the visual equipment is arranged above the light source 3.

[0044] A cover body 4 is arranged outside the light source 3. The cover body 4 covers the outside of the light source 3 to change the scattering state of the light source 3. When the polyester-viscose fabric is conveyed by the detection device, it adheres to the outer surface of the cover body 4.

[0045] In order to avoid the cover body 4 being stained when the polyester-viscose fabric is not completely dried, the cover body 4 is arranged in a rotatable manner. That is, the cover body 4 rotates synchronously during the conveying of the fabric, so as to avoid the fabric rubbing the cover body 4 during the conveying process and causing the cover body 4 to be stained.

[0046] In addition, a cleaning roller is arranged inside the machine body 1. The cleaning roller is installed inside the machine body 1 and adheres to the surface of the cover body 4. The cleaning roller rotates to clean the surface of the cover body 4 during the rotation of the cover body 4, so as to ensure good light transmittance of the cover body 4 and avoid affecting the color difference detection.

[0047] In a further embodiment, a driving unit 11 is arranged outside the cover body 4. The driving unit 11 is a driving motor. During the conveying of the polyester-viscose fabric, the driving motor drives the cover body 4 to rotate at a speed suitable for the conveying speed of the polyester-viscose fabric.

[0048] In one embodiment, the cleaning roller is fixed inside the machine body 1, so as to ensure stable friction between the cover body 4 and the cleaning roller.

[0049] In another embodiment, the driving unit 11 is connected to the cover body 4 and the cleaning roller through a transmission gear, and the rotation directions of the cover body 4 and the cleaning roller are the same. Therefore, the entire cleaning roller can be used to clean the surface of the cover body 4.

[0050] In further embodiments, the cover 4 is provided with a pressing roller 12 on both sides, which presses the polyester-viscose fabric to keep the polyester-viscose fabric stable during conveying. The pressing roller 12 is provided with a connecting frame 13 on the outside, which is hinged to the inside of the machine body 1. The machine body 1 is internally provided with an electromagnet 14, which magnetically attracts the connecting member and adjusts the clamping force of the pressing roller 12 on the polyester-viscose fabric by the magnetic force of the electromagnet.

[0051] After the stable clamping of one end of the polyester-viscose fabric, the other end is pulled to deform the polyester-viscose fabric. The color difference of the deformed polyester-viscose fabric is detected by the visual equipment at the light source 3.

[0052] The electromagnet 14 can be used to adjust the clamping force of the pressing roller 12 at any time. Since the electromagnet 14 reacts more quickly, it can respond more quickly when the polyester-viscose fabric needs to be pulled for detection.

[0053] In further embodiments, jacks 5 are provided between the cover 4 and the pressing roller 12. The jacks 5 are uniformly spaced and can be raised and lowered in height. When the jacks 5 are raised, the polyester-viscose fabric above the jacks 5 is lifted, causing the polyester-viscose fabric to protrude and deform.

[0054] The jacks 5 are provided on both sides of the cover 4. During visual detection, the jacks 5 lift the polyester-viscose fabric, causing it to deform and obtain the color of the deformed polyester-viscose fabric to determine the color difference under the deformed state of the polyester-viscose fabric.

[0055] The jacks 5 are arranged side by side, which can lift the polyester-viscose fabric at multiple positions, causing the polyester-viscose fabric to deform at different positions and obtain the color difference of the polyester-viscose fabric under multiple states.

[0056] In further embodiments, the jack 5 includes a mounting seat 51 mounted on the inside of the machine body 1, a top block 52 provided inside the mounting seat 51, and an electromagnetic matrix 53 provided between the mounting seat 51 and the top block 52. The mounting seat 51 is fixed to the inside of the machine body 1, the top block is telescopically mounted inside the mounting seat 51, and the electromagnetic matrix 53 includes a first electromagnet provided on the inner wall of the mounting seat 51 and a second electromagnet mounted on the bottom of the mounting seat 51.

[0057] The magnetic force of the first electromagnet and the second electromagnet changes the extension height of the top block. The first electromagnet and the second electromagnet are arranged in correspondence with each other.

[0058] The extension height of the top block is controlled by the magnetic force of the first electromagnet and the second electromagnet, and the magnetic force of the first electromagnet and the second electromagnet can be quickly adjusted according to the deformation jacking force required by the polyester-viscose fabric.

[0059] In a further embodiment, the jacking member 5 comprises a mounting seat 51 mounted on the inner side of the body 1, a jacking block 52 arranged inside the mounting seat 51, and a telescopic rod 54 arranged between the mounting seat 51 and the jacking block 52, the telescopic rod 54 controlling the telescopic movement of the jacking block, the jacking block comprising a fixed part 55 connected to the telescopic rod 54 and an elastic part 56 arranged outside the fixed part 55, the elastic part 56 being sleeved outside the fixed part 55.

[0060] The telescopic rod 54 can ensure the stable displacement of the jacking block, that is, how much the telescopic rod 54 supports the displacement of the jacking block can be directly reflected on the polyester-viscose fabric, which will not be affected by the polyester-viscose fabric, avoiding the situation that the pulling force on the polyester-viscose fabric is insufficient due to the influence of the polyester-viscose fabric.

[0061] The combination of the fixed part 55 and the elastic part 56 can adjust the shape of the elastic part 56 to change the support position of the jacking member 5 on the polyester-viscose fabric, so that different support states can be generated under the jacking action of the same group of jacking members 5, prompting the polyester-viscose fabric to deform in different states.

[0062] In a further embodiment, the elastic part 56 has at least five support states, each corresponding to a support state of the polyester-viscose fabric, wherein the elastic part 56 comprises a housing 561, a connecting seat 562, a guide rod 563, an air cavity 564, and an elastic member 565, the housing 561 being sleeved outside the fixed part 55, the top of the housing 561 being made of a deformable material, the connecting seat 562 being arranged on the top inner wall of the housing 561 and fixed to the inner wall of the housing 561, the guide rod 563 extending from the middle of the connecting seat 562 to the inside of the fixed part 55, the air cavity 564 being arranged inside the fixed part 55, and the guide rod 563 being inserted into the air cavity 564, and the elastic member 565 being arranged inside the air cavity 564 and supported by the guide rod 563.

[0063] The elastic part 56 has multiple connecting seats 562, each corresponding to a support position, and each support position is raised when supporting the polyester-viscose fabric, so that the polyester-viscose fabric deforms at different angles according to the change of the support positions of the jacking members 5 on both sides.

[0064] The top of the housing 561 is made of a deformable material, which can deform when the support position changes, and the lower part of the housing 561 is made of a rigid material to ensure the stability of the connection between the housing 561 and the fixed part 55.

[0065] In a further embodiment, the fixed part 55 is internally provided with a first electromagnetic block 566 and a second electromagnetic block 567, the first electromagnetic block 566 is fixed inside the fixed part 55, and the second electromagnetic block 567 is fixed to one end of the guide rod 563 inserted into the fixed part 55, and the first electromagnetic block 566 and the second electromagnetic block 567 cooperate to change the state of the guide rod 563.

[0066] The first electromagnetic block 566 and the second electromagnetic block 567 cooperate to change the state of the guide rod 563, and change the change of the support position.

[0067] In a further embodiment, the outside of the machine body 1 is covered with an elastic film 6, which covers the outside of the jacking piece 5, and the elastic film 6 is deformed by the telescopic jacking of the top block.

[0068] Under the protection of the elastic film 6, it can be avoided that the polyester-viscose fabric containing water will affect the service life of the jacking piece 5 during visual inspection.

[0069] The application also provides a color difference detection method for polyester-viscose fabric wet steaming low-salt dyeing processing, comprising the following steps: Start and calibrate the equipment, confirm that the light source 3 and the visual equipment are in the standard position, and complete the white balance and color baseline calibration with the white plate / color block, and at the same time check the state and light transmittance of the cover body 4, the cleaning roller and the driving transmission system, set and record the clamping force of the compression roller 12 to ensure the traceability and stability of subsequent detection; The fabric is sent into the detection device in the specified direction and clamped by one end of the compression roller 12, the conveying is started and the rotating speed of the cover body 4 and the conveying speed are set synchronously, the fabric adhesion, pick-up and tension are monitored in real time to ensure that there is no measurement deviation caused by slippage, wrinkles or local tightness during fabric conveying; According to the preset program, the jacking piece 5 is triggered to generate a target deformation, and after the deformation is kept stable, the image is collected by the visual equipment located above the cover body 4, the white balance correction and image preprocessing are performed in real time, and the chroma value is calculated and extracted for comparison with the baseline; According to the preset threshold, the qualified or alarm is automatically determined, the abnormal sample enters the manual review process and is associated with the production batch and parameter record, the cleaning roller periodically cleans the cover body 4 to maintain the light transmittance, and the image, color value, jacking parameter, clamping force and time stamp of each detection are completely saved for traceability and root cause analysis.

[0070] In summary, the technical solutions disclosed in the above embodiments have at least the following advantages: The lifting element 5 and the pulling mechanism can accurately control the fabric's convex height, support position and tensile elongation, quantify the color difference response of the fabric in different deformation states, facilitate the evaluation of gloss, migration and service color difference problems, and the parallel arrangement of the lifting elements 5 allows the color difference data of different positions and different support combinations of the fabric to be collected in the same detection cycle, significantly improving the detection coverage and fault positioning efficiency.

[0071] The visual equipment is placed above the cover 4 and calibrated with a standard light source 3 and white balance, eliminating the disturbance caused by the direct contact of the wet fabric and the optical device, stabilizing the acquisition light conditions, thereby significantly reducing the measurement noise and improving the consistency of the ΔE equivalent index.

[0072] The combination of the rotatable cover 4 and the cleaning roller outside the cover 4 makes the surface of the cover 4 not produce continuous friction with the fabric during the fabric conveying, and can clean the transparent surface in real time, prolong the transparency of the cover 4 and the stable working period of the visual system, and reduce the number of downtime maintenance.

[0073] The electromagnetic control clamping and soft limiting of the compression roller 12, the protection of the lifting element 5 by the cover 4 and the elastic film 6, etc. design can avoid excessive pressure injury or friction damage to the fabric in a wet state or under tension, while providing mechanical and optical protection to ensure the safety of the equipment and products.

[0074] Although the present application is disclosed in combination with the above embodiments, it is not intended to limit the present application, and any person skilled in the art can make various modifications and decorations without departing from the spirit and scope of the present application, therefore the protection scope of the present application should be defined by the appended claims.

Claims

1. A color difference visual inspection device for wet steaming and low-salt dyeing of polyester / viscose fabrics, characterized in that, Includes the body (1), visual equipment and light source (3); The height of the body (1) can be adjusted so that the detection device can be installed on one side of the equipment in any process step of the dyeing process of polyester-viscose fabric. The vision device is arranged vertically and vertically corresponding to the light source (3), and the vision device is arranged above the light source (3). The light source (3) is provided with a cover (4) on the outside. The cover (4) covers the light source (3) to change the scattering state of the light source (3). When the polyester-viscose fabric is transported by the detection device, the bonding part of the polyester-viscose fabric is bonded to the outer surface of the cover (4).

2. The color difference visual inspection device for wet steaming and low-salt dyeing of polyester / viscose fabrics according to claim 1, characterized in that, A drive unit (11) is provided on the outside of the cover (4). During the conveying of the polyester-viscose fabric, the drive unit (11) drives the cover (4) to rotate at a speed that is adapted to the conveying speed of the polyester-viscose fabric.

3. The color difference visual inspection device for wet steaming and low-salt dyeing of polyester / viscose fabrics according to claim 1, characterized in that, Pressure rollers (12) are arranged on both sides of the cover (4). The pressure rollers (12) squeeze the polyester-viscose fabric to maintain the stability of the polyester-viscose fabric during the conveying process. A connecting frame (13) is arranged on the outside of the pressure rollers (12). The connecting frame (13) is hinged to the inside of the machine body (1). An electromagnet (14) is arranged inside the machine body (1). The electromagnet (14) magnetically attracts the connecting parts and adjusts the clamping force of the pressure rollers (12) on the polyester-viscose fabric by adjusting the magnitude of the magnetic force of the electromagnet.

4. The color difference visual inspection device for wet steaming and low-salt dyeing of polyester / viscose fabrics according to claim 3, characterized in that, A lifting member (5) is provided between the cover (4) and the pressure roller (12). The lifting members (5) are evenly spaced and can be raised and lowered in height. When the lifting member (5) is raised, it lifts the polyester-viscose fabric located above the lifting member (5) and causes the polyester-viscose fabric to bulge and deform.

5. The color difference visual inspection device for wet steaming and low-salt dyeing of polyester / viscose fabrics according to claim 4, characterized in that, The lifting component (5) comprises a mounting base (51) installed inside the body (1), a top block (52) disposed inside the mounting base (51), and an electromagnetic matrix (53) disposed between the mounting base (51) and the top block (52). The mounting base (51) is fixed inside the body (1), and the top block is retractably installed inside the mounting base (51). The electromagnetic matrix (53) includes a first electromagnet disposed at the bottom of the inner wall of the mounting base (51) and a second electromagnet disposed at the bottom of the mounting base (51).

6. The color difference visual inspection device for wet steaming and low-salt dyeing of polyester / viscose fabrics according to claim 4, characterized in that, The lifting component (5) comprises a mounting base (51) installed inside the body (1), a top block (52) disposed inside the mounting base (51), and a telescopic rod (54) disposed between the mounting base (51) and the top block (52). The telescopic rod (54) controls the top block to extend and retract. The top block comprises a fixed part (55) connecting the telescopic rod (54) and an elastic part (56) disposed outside the fixed part (55). The elastic part (56) is sleeved on the outside of the fixed part (55).

7. The color difference visual inspection device for wet steaming and low-salt dyeing of polyester / viscose fabric according to claim 6, characterized in that, The elastic part (56) includes: a housing (561), a connecting seat (562), a guide rod (563), an air cavity (564), and an elastic element (565). The housing (561) is sleeved on the outside of the fixed part (55), and the top of the housing (561) is made of a deformable material. The connecting seat (562) is disposed on the top of the inner wall of the housing (561). The connecting seat (562) is fixed to the inner wall of the housing (561). The guide rod (563) extends from the middle of the connecting seat (562) to the inside of the fixed part (55). The air cavity (564) is opened inside the fixed part (55), and the guide rod (563) is inserted into the air cavity (564). The elastic element (565) is located inside the air cavity (564) and is supported by the guide rod (563).

8. The color difference visual inspection device for wet steaming and low-salt dyeing of polyester / viscose fabric according to claim 7, characterized in that, The fixing part (55) is provided with a first electromagnetic block (566) and a second electromagnetic block (567). The first electromagnetic block (566) is fixed inside the fixing part (55), and the second electromagnetic block (567) is fixed at one end of the guide rod (563) inserted into the fixing part (55). The first electromagnetic block (566) and the second electromagnetic block (567) cooperate to change the state of the guide rod (563).

9. The color difference visual inspection device for wet steaming and low-salt dyeing of polyester / viscose fabrics according to claim 4, characterized in that, The outer side of the body (1) is covered with an elastic membrane (6), which covers the outer side of the lifting member (5). The top block extends and retracts to lift the elastic membrane (6) to produce deformation.

10. A method for detecting color difference in wet-steamed low-salt dyeing of polyester / viscose fabrics, used in the color difference visual detection device as described in any one of claims 1-9, characterized in that, Includes the following steps: Start and calibrate the equipment, confirm that the light source (3) and vision equipment are in the standard position and complete the white balance and color baseline calibration with a white board / color block. At the same time, check the status and transmittance of the cover (4), cleaning roller and drive transmission system. Set and record the clamping force of the pressure roller (12) to ensure that subsequent detection is traceable and stable. The fabric is fed into the testing device in the specified direction and held firmly with one end of the pressure roller (12). The conveying is started and the rotation speed and conveying speed of the cover (4) are set simultaneously. The fabric bonding, pick-up and tension are monitored in real time to ensure that there is no slippage, wrinkles or local looseness during the fabric conveying process, which leads to measurement deviation. The lifting component (5) is triggered sequentially according to the preset program to generate the target deformation. After it stabilizes, the vision device located above the cover (4) collects the image, performs white balance correction and image preprocessing in real time, calculates and extracts the chromaticity value for comparison with the baseline. The system automatically determines whether a sample is qualified or alarms based on a preset threshold. Abnormal samples are entered into a manual review process and associated with production batches and parameter records. Meanwhile, the cleaning roller regularly cleans the cover (4) to maintain the light transmittance and saves the images, color values, lifting parameters, clamping force and timestamps of each test for traceability and root cause analysis.

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