Cloth cover defect detection device

Abstract

The invention discloses a cloth cover defect detection device, which comprises a fixed table arranged on a knitting machine and positioned at a woven cloth advancing position; the detection module comprises a plurality of detection units, the detection units are sequentially arranged on the fixed table at intervals, and each detection unit directly faces woven cloth formed by knitting on a knitting machine; and the defect recording structure is arranged on the fixed table and is close to the detection module, so that after the detection module detects the defects of the woven cloth, the positions of the defects of the cloth cover are recorded through the defect recording structure. The problems that an existing device for detecting the defects of the woven fabric is high in cost, large in dependence on a network and not convenient and accurate enough in detection are solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of knitting machines, and in particular to a fabric defect detection device. Background Art

[0002] Circular knitting machines, scientifically known as circular weft knitting machines, have developed rapidly due to their multiple loop-forming systems, high speed, high output, fast pattern changes, good fabric quality, fewer processes, and strong product adaptability. Knitting needles are a major loop-forming component on knitting machines, used to weave yarn into coils and connect the coils into knitted fabrics such as woven fabrics.

[0003] When using this type of knitting machine to weave cloth, it is generally necessary to inspect the formed cloth to see if there are any defects such as flaws on the cloth. For example, when a needle breaks on the knitting machine, a defect will be formed on the cloth. When more needles are broken or damaged, larger defects will be formed on the cloth. Although the staff will replace the needles in time after the needle breaks, defects have already been left on the cloth during the previous weaving process. At this time, the formed cloth needs to be detected to determine the specific location of the defect and deal with it.

[0004] At present, when inspecting woven fabrics, a camera unit is generally set up. That is, during the weaving process, when the knitted fabric moves in one direction, the camera unit is fixed somewhere on the running track of the fabric, so that the fabric can be photographed in real time as the fabric moves. The photographed images are then uploaded to a server or cloud for comparison and analysis to determine whether the passing fabric surface has defects.

[0005] Although this method can effectively detect whether there are defects on the woven fabric, it is highly dependent on the network. When there is a problem with the network in the factory, it may not be able to effectively complete the detection process. In addition, this detection method has high requirements for the server, because it is necessary to take real-time images of the entire fabric surface and upload them, and also to compare the images, so the storage capacity must be large. In addition, for some patterned fabrics, more comparison images need to be stored in the server for comparison. Therefore, general servers may not be able to meet this requirement, resulting in increased detection costs. Furthermore, for new pattern fabrics designed by some design companies, based on confidentiality, the design company will not give the corresponding images to the production company, which makes it impossible for the manufacturer to upload the image of the fabric surface to be woven in the server, making it more difficult for the manufacturer to detect the formed fabric during the weaving process.

[0006] Therefore, there is an urgent need for a woven fabric surface defect detection device that is accurate, convenient and can effectively reduce detection costs. Summary of the invention

[0007] The purpose of the present invention is to provide a fabric defect detection device, which solves the problems that the existing devices for detecting fabric defects are high in cost, highly dependent on the network, and not convenient and accurate enough in detection.

[0008] In order to achieve the above-mentioned object, the first aspect of the present disclosure provides a cloth defect detection device, characterized in that it comprises: A fixed table is provided on the knitting machine and is located at a position where the fabric travels; A detection module, comprising a plurality of detection units, which are sequentially arranged on the fixed platform at intervals, and each of the detection units is arranged facing the woven fabric knitted on the knitting machine; The defect recording structure is arranged on the fixing platform and close to the detection module, so that after the detection module detects the fabric defect, the defect recording structure can be used to record the location of the fabric defect.

[0009] In some embodiments, the plurality of detection units are arranged in at least two rows on the fixing platform, the detection units in each row are arranged at intervals, and the detection units in two adjacent rows are arranged in staggered positions.

[0010] In some embodiments, a plurality of through holes are provided on the fixing platform, and each of the detection units is fixed to each of the through holes.

[0011] In some embodiments, the distance between the first and last two detection units in each column is greater than the width of the woven fabric formed on the knitting machine.

[0012] In some embodiments, the detection unit is a photoelectric sensor, which is fixed in the through hole and disposed facing the woven fabric.

[0013] In some embodiments, the detection unit is a visual sensor, which is fixed into the through hole and disposed facing the woven fabric.

[0014] In some embodiments, the defect recording structure includes an industrial camera; The fixing platform is provided with a shooting hole, and the industrial camera is fixed in the shooting hole of the fixing platform.

[0015] In some embodiments, the fabric defect detection device further includes a mounting bracket, and the fixing platform is fixed to the mounting bracket so as to be fixed to the knitting machine through the mounting bracket.

[0016] By adopting the above technical solution, the designer uses multiple detection units and defect recording structures. During the weaving process, each detection unit can detect each position of the fabric separately to determine whether there are defects in each part of the fabric. In this way, each detection unit only needs to detect local points of the fabric, and then upload the detection results for comparison to determine whether there are defects on the fabric. The demand for the server is relatively small, which saves costs. In addition, the demand for the network is not large, which makes this detection device more widely used and will not be restricted by too many conditions. The defect recording structure can then be opened in time to record the position of the defect in the fabric.

[0017] In addition, when debris such as lint flies to a local point on the fabric during the weaving process, one of the detection units will not stop the machine after detecting that there is a problem with the local point. Instead, as the fabric runs, other detection units near the detection unit will be used to detect the position of the corresponding accessories of the fabric. If no defect is found, it is determined that there is no defect at that position. At this time, the knitting machine does not stop but continues to run. This can avoid the situation where debris flying onto the fabric causes erroneous detection and leads to shutdown, thereby avoiding waste of time caused by shutdown.

[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present disclosure and constitute a part of the specification. They are used to explain the present disclosure together with the following detailed description, but do not constitute a limitation of the present disclosure.

[0020] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the cloth surface defect detection device provided by the present invention; Figure 2 It is a schematic diagram of the bottom structure of the fabric defect detection device provided by the present invention; Figure 3 The present invention is a simplified structural diagram of the fabric defect detection device provided by the present invention when detecting fabric defects.

[0021] Description of reference numerals: 1. Fixed table; 2. Detection unit; 3. Defect recording structure; 4. Through hole; 5. Photographing hole; 6. Fabric; 7. Defect. DETAILED DESCRIPTION

[0022] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0023] The present invention provides a fabric defect detection device, such as Figure 1 , Figure 2 and Figure 3 As shown, the fabric defect detection device comprises a fixed platform 1, a detection module and a defect recording structure 3, wherein the fixed platform 1 is arranged on the knitting machine and is located at the position where the woven fabric 6 travels. The detection module comprises a plurality of detection units 2, which are sequentially arranged on the fixed platform 1 at intervals, and each detection unit 2 is arranged directly facing the woven fabric 6 knitted on the knitting machine. The defect recording structure 3 is arranged on the fixed platform 1 and is arranged close to the detection module, so that after the detection module detects the defect 7 of the woven fabric 6, the position of the fabric defect 7 is recorded through the defect recording structure 3.

[0024] Through the arrangement of the above structure, during the weaving process, the fixed platform 1 can be arranged directly opposite the weaving. After that, during the weaving process, each detection unit 2 in the detection module will detect each position of the weaving respectively to determine whether there are defects in each part of the formed weaving. By using the multiple detection units 2, each detection unit 2 only needs to detect the local points of the weaving 6, and then upload the detection results for comparison to determine whether there are defects 7 on the weaving. In this way, only the local points are detected, and the demand for the server is relatively small. Ordinary servers can meet the demand, thereby saving costs. In addition, it only detects the local points, and the demand for the network is not large. Even the network can be used to detect the weaving. In this way, this detection device is widely used and will not be restricted by too many conditions. This device can be used for detection of various weavings. After the detection module detects the existence of defects on the weaving, the defect recording structure 3 can be opened in time to record the position of the defect in the weaving, so that the staff can handle the defect position later.

[0025] Furthermore, when hair and other debris fly to a local point of the fabric during the weaving process, if the original shooting method is used, the position may be directly identified as a defect, and the machine will be stopped for processing. However, when using the present defect detection device for detection, when one of the detection units 2 detects that there is a problem with the local point, the machine will not be stopped. As the fabric is running, other detection units 2 near the detection unit 2 are used to detect the position of the corresponding attachment of the fabric. If no defect is found, it is determined that there is no defect at the position. At this time, the knitting machine does not stop but continues to run. At the same time, it is still necessary to use the defect recording structure 3 to record the position so that the staff can check the position later to determine whether it is a defect. Of course, in the subsequent operation, it is also necessary to determine whether the corresponding detection unit 2 still detects that the corresponding position of the fabric has a defect. If there is no defect, it means that there is no problem and it can run normally. If there is still a defect, it is necessary to stop the machine for detection. In this way, it is possible to avoid the situation where debris flies onto the fabric and causes false detection and machine stoppage, thereby ensuring that the knitting machine can continue to operate even if such an error occurs, thus avoiding the waste of time caused by machine stoppage.

[0026] It should be noted that the defect detection device is also provided with a controller and a server, which are electrically connected to each detection unit 2 and the defect recording structure 3 respectively, and the controller is electrically connected to the knitting machine. In this way, the information detected by the detection unit 2 can be transmitted to the controller and the server in real time, so that the shutdown and operation of the knitting machine can be controlled according to the detected information, and the operation of the defect recording structure 3 can be controlled according to demand.

[0027] In some embodiments, Figure 1 As shown, the plurality of detection units 2 are arranged in at least two rows on the fixing platform 1 , the detection units 2 in each row are arranged at intervals, and the detection units 2 in two adjacent rows are arranged in staggered positions.

[0028] Through this arrangement, the detection units 2 can be arranged on the fixed table 1 in an all-round manner, so that when the formed fabric passes through the fixed table 1, the various detection units 2 on the fixed table 1 can be used to more comprehensively detect different positions on the passed fabric, further avoiding errors and omissions.

[0029] Among them, Figure 1 and Figure 2 As shown, a plurality of through holes 4 are provided on the fixing platform 1 , and each detection unit 2 is fixed to each through hole 4 .

[0030] In this way, each detection unit 2 can be easily fixed to the fixing platform 1, and the detection of the fabric by the detection unit 2 will not be affected.

[0031] It should be noted that the detection unit 2 can be fixed to the fixing platform 1 by a connecting piece, such as directly setting the connecting piece on the outer shell of the detection unit 2, so that the detection unit 2 extends into the through hole 4, and then the connecting piece is set on the fixing platform 1, and then fixed by bolts. Of course, the detection unit 2 can also be fixed by other methods, as long as it can be stably installed in the through hole 4.

[0032] Furthermore, the distance between the first and last detection units 2 in each column is greater than the width of the woven fabric formed on the knitting machine.

[0033] In this way, it can be ensured that the detection units 2 in each column can completely cover the fabric, so that there will be no detection dead spots, and each position of the fabric can be detected more comprehensively.

[0034] In some embodiments, the detection unit 2 is a photoelectric sensor, which is fixed in the through hole 4 and disposed opposite to the fabric.

[0035] By setting the detection unit 2 as a photoelectric sensor, each photoelectric sensor can be used to measure the distance information to the fabric. When there is no defect in the fabric, the distance to the fabric measured by the photoelectric sensor is unchanged, and when a defect occurs, the measured distance information will inevitably change. At this time, the photoelectric sensor can upload this information so that the staff can determine that there is a defect at the location. In addition, when multiple photoelectric sensors at the same location detect inconsistent distance information, it means that the defect at the location may be large, indicating that multiple broken needles may occur, and when only a few local photoelectric sensors detect inconsistent distance information, it means that the defect at the location may be small.

[0036] Among them, when determining the distance information between the woven fabric and each photoelectric sensor, the distance information between each photoelectric sensor and the woven fabric can be determined in the process of forming a complete woven fabric in the initial stage of weaving, thereby determining the distance information between the woven fabric and each photoelectric sensor and storing it, and then determining whether the distance information between the subsequently formed woven fabric and each photoelectric sensor is abnormal based on the stored distance information.

[0037] In other embodiments, the detection unit 2 is a visual sensor, which is fixed in the through hole 4 and disposed facing the fabric.

[0038] By setting the detection unit 2 as a visual sensor, each visual sensor can be used to measure the image of each local point of the fabric, and then compare it with the pre-stored image of the local point to determine whether there is a defect at that position. When the image comparison is inconsistent, it means that there is a defect at that position.

[0039] Among them, when determining the image information on the woven cloth, the image information corresponding to each visual sensor can be determined and stored in the initial stage of weaving to form a complete weaving process. Then, based on the stored image information, it is determined whether the image on the woven cloth formed by subsequent visual sensors is inconsistent to determine whether there is an abnormality.

[0040] In some embodiments, Figure 1 and Figure 2 As shown, the defect recording structure 3 includes an industrial camera. A shooting hole 5 is provided on the fixing platform 1 . The industrial camera is fixedly connected to the shooting hole 5 of the fixing platform 1 .

[0041] Through the setting of industrial cameras, when there are defects on the fabric, the specific location of the defects on the fabric can be clearly captured and recorded. At the same time, the industrial camera responds quickly and can quickly complete the shooting process.

[0042] In some embodiments, the above-mentioned fabric defect detection device may further include a mounting bracket, and the fixing platform 1 is fixedly connected to the mounting bracket so as to be fixed to the knitting machine through the mounting bracket.

[0043] By using the installation bracket, the fixed platform 1 and other structures can be conveniently installed on the knitting machine to detect the woven fabric, and it is also convenient to disassemble it later.

[0044] It should be noted that the above-mentioned mounting bracket can be of various structures, as long as it can relatively fix the fixed platform 1 to the knitting machine. For example, a four-rod bracket can be simply provided, one end of which is fixedly mounted on the fixed platform 1 and the other end is fixed to the knitting machine, so as to realize the installation of the fixed platform 1. Of course, the mounting bracket can also be of other mounting structures.

[0045] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0046] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0047] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A fabric defect detection device, characterized in that: include: A fixed table is provided on the knitting machine and is located at a position where the fabric travels; A detection module, comprising a plurality of detection units, which are sequentially arranged on the fixed platform at intervals, and each of the detection units is arranged facing the woven fabric knitted on the knitting machine; The defect recording structure is arranged on the fixing platform and close to the detection module, so that after the detection module detects the fabric defect, the defect recording structure can be used to record the location of the fabric defect.

2. The fabric defect detection device according to claim 1, characterized in that: The plurality of detection units are arranged in at least two rows on the fixing platform, the detection units in each row are arranged at intervals, and the detection units in two adjacent rows are arranged in staggered positions.

3. The fabric defect detection device according to claim 2, characterized in that: The fixing platform is provided with a plurality of through holes, and each of the detection units is fixed to each of the through holes.

4. The fabric defect detection device according to claim 2, characterized in that: The distance between the first and last two detection units in each column is greater than the width of the woven fabric formed on the knitting machine.

5. The fabric defect detection device according to claim 3, characterized in that: The detection unit is a photoelectric sensor, which is fixed in the through hole and arranged facing the woven fabric.

6. The fabric defect detection device according to claim 3, characterized in that: The detection unit is a visual sensor, which is fixed in the through hole and arranged facing the woven fabric.

7. The fabric defect detection device according to claim 1, characterized in that: The defect recording structure shown includes an industrial camera; The fixing platform is provided with a shooting hole, and the industrial camera is fixed in the shooting hole of the fixing platform.

8. The fabric defect detection device according to claim 1, characterized in that: The fabric defect detection device further comprises a mounting bracket, and the fixing platform is fixed to the mounting bracket so as to be fixed to the knitting machine through the mounting bracket.

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