Integrated braid flaw detection equipment

Abstract

The utility model provides integrated braid flaw detection equipment which comprises a plurality of rollers which are separately arranged and used for controlling or changing the running direction of braids, and the braids to be detected are arranged along the rollers to form a layout for detection; the operation system pulls the braid to move between the rolling shafts and is used for controlling the moving speed and the tension degree of the braid; the image acquisition system acquires image information of the front and back surfaces and two side edges of the braid and is used for detecting various defects; the control system controls the operation system to be connected with the image acquisition system, judges whether flaws exist or not and the types of the flaws, processes and stores transmission data and controls movement. According to the utility model, the movement speed of the braid can be regulated and controlled through the structural design, excellent image acquisition and processing can be carried out at various movement speeds, and detection of various defects can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of textile machinery, and in particular to an integrated webbing defect detection device. Background Art

[0002] Due to the instability of the process, some dimensional deviations, color difference, dirt, burrs, snags and other defects will occur during the production of webbing. These defects not only affect the visual beauty and feel of consumers, but also affect the luxury and comfort of the entire vehicle. The various defects of webbing have led to a huge market demand for its defect detection. Manual detection is greatly affected by subjective factors and has disadvantages such as slow speed, high cost and low accuracy. Studies have shown that manual detection can only detect about 85% of defects, the detection speed does not exceed 15m / min, and visual fatigue can easily cause missed detection and misdetection of products. In order to reduce enterprise costs and improve productivity, enterprises urgently need automatic webbing detection equipment based on machine vision.

[0003] Chinese patent 20180215284.X is a double-sided defect detection device for elastic webbing based on machine vision. The patent provides a method for visually inspecting double-sided elastic webbing. However, due to the complex and changeable three-dimensional structural characteristics of the webbing, it is difficult to accurately and effectively identify the defect classification.

[0004] Chinese Patent 201911119749.7, Weft Straightening Machine Control Method, Device, Computer Equipment and Storage Medium, in which, first, multiple industrial cameras take pictures of fabrics to obtain multiple fabric images, and the server uses a feature extraction algorithm to extract fabric image features, identifies the fabric category based on the image features, and then matches the fabric template to preset parameters based on the fabric category to perform weft straightening on the fabric. This method still focuses on algorithm processing and does not provide a complete detection platform.

[0005] It can be seen that the shortcomings of the existing method for classifying and identifying ribbons using computer vision image processing and analysis technology during use are mainly:

[0006] (1) Usually, the analysis is done on the extraction of a single or a small number of feature points, and the recognition accuracy is generally low, or even impossible to recognize; (2) Most patents focus on algorithm research and modeling; for the entire system, including equipment platform design, algorithms, software development, communication control, and finally the evaluation and analysis of the constructed platform, operation testing, etc. are relatively rare. (3) It is difficult to identify the webbing structure with twisted and wrinkled yarns, especially for defects such as side hair and skipped stitches. Utility Model Content

[0007] In view of the defects in the prior art, the purpose of the utility model is to provide an integrated ribbon defect detection device.

[0008] According to one aspect of the utility model, an integrated webbing defect detection device is provided, comprising:

[0009] A plurality of rollers are arranged separately to control or change the running direction of the webbing, and the webbing is arranged along the plurality of rollers to form a layout for detection;

[0010] An operating system, which pulls the webbing to move between rollers, is used to control the moving speed and tension of the webbing;

[0011] An image acquisition system is provided on the opposite side of the ribbon to collect image information of the front and back sides and two sides of the ribbon for various defect detection;

[0012] Control system, control operation system, image acquisition system, determine whether there are defects and the type of defects, process, store and transmit data, and control movement.

[0013] Preferably, the plurality of rollers include twelve rollers;

[0014] After the ribbon is discharged from the front-end printing and drying equipment, it enters the twelfth roller, passes through the first roller downward, and the first roller is connected to the linear cylinder guide rail to achieve up and down reciprocating movement, changes direction and passes through the second roller upward, passes through the third roller downward, turns 90 degrees and passes through the fourth roller, and starts visual inspection upward;

[0015] Afterwards, the front and back of the ribbon are turned over by the fifth, sixth and seventh rollers, and the back side is facing downward for further inspection and the ribbon turns 90° at the eighth roller, and then turns 90° again at the ninth roller, and then moves forward and continues to turn for visual inspection again;

[0016] The tenth roller, the eleventh roller, and the twelfth roller are combined to flip the left and right sides of the webbing and perform visual inspection downward;

[0017] After turning the eleventh roller, it moves forward into the marking system to carry out labeling and continues upwards through the thirteenth roller and through the traction motor to complete the entire operation process.

[0018] Preferably, it further comprises a light source system connected to the control system to provide light source for the image acquisition system;

[0019] The light source system is a combined light source or a single light source.

[0020] Preferably, the operating system comprises:

[0021] A traction motor is arranged outside the entire device, and its speed is controlled by a control system; the output shaft of the traction motor is connected to the webbing and pulls the webbing to move;

[0022] A linear cylinder guide rail connected to the first roller;

[0023] A variable resistance slide rail, which is parallel to the linear cylinder guide rail and connected to the first roller;

[0024] A linear displacement sensor is arranged on the top of the variable resistor slide rail. After collecting the displacement information of the variable resistor slide rail and feeding it back to the control system, the control system controls the change of the rotation speed of the traction motor and the up and down position of the linear cylinder guide rail to adjust the tension of the webbing.

[0025] Preferably, the image acquisition system includes multiple industrial cameras, which cooperate with the light source system at different positions to detect one or more defects, that is, to collect image information of the front, back and two sides of the ribbon, and feed it back to the control system in real time for image defect identification.

[0026] Preferably, the industrial camera uses three cameras, namely a first camera, a second camera and a third camera;

[0027] The first camera is a black and white camera, which is arranged on one side of the belt surface and collects the texture defect image of the belt surface;

[0028] The second camera is a color camera, which is arranged on one side of the webbing surface to collect color defects on the webbing surface; the first camera and the second camera are arranged in upper and lower positions;

[0029] Based on the arrangement of the fifth roller, the sixth roller and the seventh roller, the ribbon that passes through the first camera and the second camera twice is the front and back sides, and the image information collected by the first camera and the second camera is the information of the front and back sides of the ribbon;

[0030] The third camera is a black and white or color camera, which collects surface hair defects on the side of the ribbon; based on the layout of the eighth roller, the tenth roller, the eleventh roller and the twelfth roller, the two sides of the ribbon passing through the third camera are different sides; the image information collected by the third camera is the information of the two sides of the ribbon.

[0031] Preferably, the distance between the industrial camera and the ribbon is adjusted within a range of 50 to 750 mm according to the width of the ribbon.

[0032] Preferably, the image acquisition system supports high-speed motion image acquisition, or performs acquisition during regular pauses of the running system.

[0033] Preferably, it also includes a marking system for marking defects on the webbing; the marking system includes:

[0034] The label paper storage silo is used to store label paper. The label paper is attached to the label tape, which is in the form of a roll.

[0035] The label running servo motor is used to drive the label belt to move;

[0036] The label paper compacting and pasting mechanism peels the label paper off the label tape and pastes it on the defective part of the tape;

[0037] The sensor is located behind the label paper compacting and pasting mechanism and is used to detect whether label paper is pasted on the ribbon.

[0038] Preferably, the control system includes one or more of a programmable logic controller, a single chip microcomputer, a motion controller, an industrial computer, and a server.

[0039] Compared with the prior art, the embodiment of the utility model has at least one of the following beneficial effects:

[0040] This is a new type of integrated webbing defect detection equipment. Through the special structural design of multiple rollers and running system, the webbing movement speed can be infinitely regulated, and excellent image acquisition and processing can be performed at various movement speeds to realize the detection of various defects.

[0041] In the integrated webbing defect detection device in the embodiment of the utility model, each roller can not only provide tension support, but also change the direction of the webbing, so that a set of cameras can perform multi-faceted and multi-location detection on the webbing, saving the cost of the equipment.

[0042] The integrated webbing defect detection device in the embodiment of the utility model uses a combination of different light sources and cameras to take multiple photos of the webbing in the detection area, covering the weaving defect detection mechanism, the surface printing and dyeing defect detection mechanism, and the width detection mechanism. These combinations cover the core of webbing defect detection, have a wide detection area, and can be applied to various types of webbing models.

[0043] The integrated webbing defect detection device in the embodiment of the utility model marks the detected defects during operation, and there is no need to stop the machine for labeling after the detection is completed, thereby improving work efficiency and accuracy.

[0044] The integrated webbing defect detection device in the embodiment of the utility model has a configurable control system, which can adjust the detection speed, results and labeling distance according to the parameters of the webbing size, color, etc. The acquired detection data information can be used for the intelligent upgrade of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0046] Figure 1 It is a schematic diagram of the overall structure of the integrated webbing defect detection device in the embodiment of the utility model;

[0047] In the figure:

[0048] Running system: 1-1 is a linear displacement sensor, 1-2 is a linear cylinder guide, and 1-3 is a traction motor;

[0049] Image acquisition system: 2-1 is the first camera, 2-2 is the second camera, and 2-3 is the third camera;

[0050] Labeling system: 3-1 is the label paper storage silo, 3-2 is the label paper compacting and pasting mechanism, 3-3 is the label operation servo motor, and 3-4 is the sensor for detecting the presence or absence of labels;

[0051] Roller: 4-1 is the first roller, 4-2 is the second roller, 4-3 is the third roller, 4-4 is the fourth roller, 4-5 is the fifth roller, 4-6 is the sixth roller, 4-7 is the seventh roller, 4-8 is the eighth roller, 4-9 is the ninth roller, 4-10 is the tenth roller, 4-11 is the eleventh roller, 4-12 is the twelfth roller;

[0052] Control system: 5-1 is the control system;

[0053] Lighting system: 6-1 is the first light source, 6-2 is the second light source, 6-3 is the third light source, 6-4 is the fourth light source, 6-5 is the fifth light source, 6-6 is the sixth light source, and 6-7 is the seventh light source.

[0054] 7 is a webbing. DETAILED DESCRIPTION

[0055] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the utility model. These all fall within the scope of protection of the utility model.

[0056] See also Figure 1The utility model provides an integrated webbing defect detection device, including multiple rollers, an operating system, an image acquisition system and a control system; the multiple rollers are arranged separately, and are used to control or change the running direction of the webbing, and the webbing is arranged along the multiple rollers to form a layout for detection; the operating system pulls the webbing to move between the rollers, and is used to control the moving speed and tension of the webbing; the image acquisition system is arranged on the opposite side of the webbing, and collects image information of the front and back sides and two sides of the webbing for multiple defect detection;

[0057] Control system, control operation system, image acquisition system, determine whether there are defects and the type of defects, process, store and transmit data, and control movement.

[0058] The utility model cooperates with multiple rollers and a running system to keep the webbing sufficiently tensile and to pause regularly, which is beneficial for the image acquisition system to acquire detection images; the image acquisition system acquires images from multiple directions to realize the detection of multiple defects.

[0059] In a preferred embodiment of the present invention, a preferred layout of multiple rollers and a running system is provided, so that the webbing can continuously change direction and be tensioned at all times.

[0060] The operating system is composed of a linear displacement sensor 1-1, a linear cylinder guide 1-2, a traction motor 1-3 and a variable resistor slide rail. The traction motor 1-3 drives the webbing to move forward, and the linear displacement sensor 1-1 is set on a fixed bracket to measure the displacement of the webbing; the linear cylinder guide 1-2 is connected to the first roller 4-1, and the variable resistor slide rail is parallel to the linear cylinder guide 1-2 and is also connected to the first roller 4-1. The variable resistor slide rail is fixed to the linear displacement sensor 1-1. The linear cylinder guide 1-2 actively controls the first roller 4-1 to move up and down, and the variable resistor slide rail moves passively.

[0061] The linear displacement sensor 1-1 detects the position of the variable resistor slide rail and feeds back to the control system. The control system controls the linear cylinder guide rail 1-2 and the traction motor 1-3 to perform up and down reciprocating motion to keep the belt tension and control the belt to move at a specified speed.

[0062] Specifically, the linear displacement sensor 1-1 converts the linear mechanical displacement into an electrical signal. The variable resistor slide is fixed at the fixed position of the sensor, and different resistance values ​​are measured by the displacement of the slider on the slide. The principle is that the sensor slide is connected to a steady-state DC voltage, allowing a small current of microamperes to flow, and the voltage between the slider and the starting end is proportional to the length of the slider movement.

[0063] Since the linear displacement of the linear cylinder guide 1-2 reciprocates up and down, it moves upward when the tension is large. At this time, the displacement number is small and the resistance value is small. After the system obtains the numerical signal and compares it with the set value, it makes feedback and controls the rear motor (the motor of the linear cylinder guide 1-2) to run faster and the front motor (traction motor 1-3) to run slower, thereby reducing the excessive tension of the webbing by the equipment; conversely, the rear end slows down and the front end speeds up to increase the tension. Thus, the overall tension of the equipment can be monitored and adjusted through the position information of the sensor.

[0064] This embodiment uses a total of 12 rollers to form a preferred layout. Specifically, the webbing 7 enters the twelfth roller 4-12 after being discharged from the previous process, passes through the first roller 4-1 downward, and the first roller 4-1 is connected to the linear cylinder guide 1-2 to achieve up and down reciprocating movement, changes direction and passes through the second roller 4-2 upward, passes through the third roller 4-3 downward, passes through the fourth roller 4-4 after a 90° turn, and starts visual inspection upward; then, the front and back sides of the webbing 7 are turned over by the fifth roller 4-5, the sixth roller 4-6, and the seventh roller 4-7 combination, and the back side continues to be inspected downward and turns 90° at the eighth roller 4-8, and turns 90° again at the ninth roller 4-9, and then moves forward briefly and continues to turn for visual inspection again.

[0065] The tenth roller 4-10, the eleventh roller 4-11, and the twelfth roller 4-12 are combined to flip the left and right sides of the ribbon 7 and perform visual inspection downward;

[0066] After the eleventh roller 4-11 turns, it enters forward to indicate that the system performs the labeling action and continues upwards through the thirteenth roller 4-13 and through the traction motor 1-3 to complete the entire operation process.

[0067] In one embodiment of the utility model, a preferred mode of an image acquisition system is provided. Specifically, three cameras are used. The first camera 2-1 is a black and white camera, which is arranged on the opposite side of the ribbon surface to collect images of texture defects on the ribbon surface; the second camera 2-2 is a color camera, which is arranged on the opposite side of the ribbon surface to collect color defects on the ribbon surface; it can be seen from the figure that the first camera 2-1 and the second camera 2-2 are distributed in upper and lower positions. Due to the action of the fifth roller 4-5, the sixth roller 4-6 and the seventh roller 4-7, the ribbon that passes through the first camera 2-1 and the second camera 2-2 twice is the front and back sides, so the image information collected by the same node can collect both sides of the ribbon 7.

[0068] The third camera 2-3 can be a black and white or color camera, and it collects surface hair defects on the side of the ribbon. Due to the layout of the eighth roller 4-8, the tenth roller 4-10, the eleventh roller 4-11 and the twelfth roller 4-12, the two sides of the ribbon passing through the third camera 2-3 are different. Therefore, the image information collected by the third camera 2-3 at the same node is the information of the two sides of the ribbon.

[0069] Graphic processing based on the above image information can realize multiple defect detection, including: weaving defect detection, surface printing and dyeing defect detection and width detection. The specific defect detection process or method can adopt existing technology, such as the safety belt edge convexity and edge hair defect detection method and system disclosed in the invention patent with publication number CN116342489A. This part does not belong to the content to be improved and protected by this utility model, and will not be repeated.

[0070] In one embodiment of the present invention, a preferred structure of a labeling system is provided. It includes a label paper storage bin 3-1 for storing cut large rolls of labels. Figure 1 As shown, the label tape is pulled out from the label paper storage bin 3-1, arranged on multiple axes, folded back and forth, roughly in a V shape, and finally wound to the collection roller; the label running servo motor 3-3 is connected to the drive roller to control its rotation and pull the label roll.

[0071] The label paper compacting and pasting mechanism 3-2 is installed at the folding part of the label tape, and mainly includes a peeling plate and a pressing wheel (the peeling plate is against the folding part of the label tape, and the pressing wheel follows the peeling plate and is arranged above the webbing); the peeling plate peels off the label on the label tape, and the pressing wheel sticks the label on the webbing;

[0072] Sensors 3-4 for detecting the presence of labels are used to detect whether the labels are attached to the surface of the ribbon as required. Specifically, according to the characteristics of the labels, RFID can be selected for chip labels, color sensors can be selected for paper labels, and induction sensors can be selected for metal labels)

[0073] The process of attaching the above identification system labels is as follows:

[0074] The control system identifies the defect information, sends a signal, and starts the labeling action.

[0075] The label running servo motor drives the drive roller to drive the roll material to move;

[0076] The label moves to the peeling plate of the label paper compacting and pasting mechanism. When the base paper changes direction after passing through the peeling plate, the label comes out and separates from the base paper to come into contact with the ribbon. The pasted label moves forward with the ribbon and is further compacted by the pressure wheel.

[0077] The label continues to pass through the sensor to detect whether there is a label on the defect. If a label is detected, the next round of labeling will be prepared normally, otherwise the system will alarm.

[0078] It should be noted that the control system will calculate the corresponding defect position based on the standard position of the set detection point, that is, the position of each camera and the position of the marking system execution point (label paper compaction and pasting mechanism) are certain, and the current webbing running speed and label running speed are controllable and known. The encoder can obtain the execution time of the label paper compaction and pasting mechanism based on the quantitative relationship between displacement, speed and time to ensure the accuracy of the labeling position.

[0079] In one embodiment of the utility model, a preferred mode of the lighting system is provided. This embodiment uses three sets of combined light sources, the first light source 6-1, the second light source 6-2, and the third light source 6-5 provide illumination light for the first camera 2-1; the fourth light source 6-4, the fifth light source 6-3, and the sixth light source 6-6 provide illumination light for the second camera 2-2, and the seventh light source 6-7 provides illumination light for the third camera 2-3. These light sources respectively display the surface and side features of the ribbon clearly, so that it can better collect pictures.

[0080] As a preferred embodiment of the utility model, a complete bracket system is provided to support each component, and can be moved forward, backward, left and right according to the size of the webbing. This is a relatively conventional setting, and the specifications and shapes of the bracket are not specifically limited, as long as it can support each component.

[0081] As a preferred embodiment of the utility model, the control system 5 is composed of a programmable logic controller and an industrial computer, and is controlled by software. The speed, detection results, and labeling distance can be adjusted manually according to the size and color of the webbing. According to the movement direction of the webbing 7, when the distance between the marking system 4 and the image acquisition 2 meets the detection requirements, the control system determines the defect and calculates it, and then controls the marking system to move. At this time, the defect of the webbing just moves to the position of the marking label.

[0082] The above describes the specific embodiments of the utility model. It should be understood that the utility model is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the utility model. The above preferred features can be used in any combination without conflicting with each other.

Claims

1. An integrated ribbon defect detection device, characterized in that: include: A plurality of rollers are arranged separately to control or change the running direction of the webbing, and the webbing is arranged along the plurality of rollers to form a layout for detection; An operating system, which pulls the webbing to move between rollers, is used to control the moving speed and tension of the webbing; An image acquisition system is provided on the opposite side of the ribbon to collect image information of the front and back sides and two sides of the ribbon for various defect detection; Control system, control operation system, image acquisition system, determine whether there are defects and the type of defects, process, store and transmit data, and control movement.

2. The integrated ribbon defect detection device according to claim 1, characterized in that: The plurality of rollers include twelve rollers; After the ribbon is discharged from the front-end printing and drying equipment, it enters the twelfth roller, passes through the first roller downward, and the first roller is connected to the linear cylinder guide rail to achieve up and down reciprocating movement, changes direction and passes through the second roller upward, passes through the third roller downward, turns 90 degrees and passes through the fourth roller, and starts visual inspection upward; Afterwards, the front and back of the ribbon are turned over by the fifth, sixth and seventh rollers, and the back side is facing downward for further inspection and the ribbon turns 90° at the eighth roller, and then turns 90° again at the ninth roller, and then moves forward and continues to turn for visual inspection again; The tenth roller, the eleventh roller, and the twelfth roller are combined to flip the left and right sides of the webbing and perform visual inspection downward; After turning the eleventh roller, it moves forward into the marking system to carry out labeling and continues upwards through the thirteenth roller and through the traction motor to complete the entire operation process.

3. The integrated ribbon defect detection device according to claim 1, characterized in that: It also includes a light source system connected to the control system to provide light source for the image acquisition system; The light source system is a combined light source or a single light source.

4. The integrated ribbon defect detection device according to claim 1, characterized in that: The operating system comprises: A traction motor is arranged outside the entire device, and its speed is controlled by a control system; the output shaft of the traction motor is connected to the webbing and pulls the webbing to move; A linear cylinder guide rail connected to the first roller; A variable resistance slide rail, which is parallel to the linear cylinder guide rail and connected to the first roller; A linear displacement sensor is arranged on the top of the variable resistor slide rail. After collecting the displacement information of the variable resistor slide rail and feeding it back to the control system, the control system controls the change of the rotation speed of the traction motor and the up and down position of the linear cylinder guide rail to adjust the tension of the webbing.

5. The integrated webbing defect detection device according to claim 3, characterized in that: The image acquisition system includes multiple industrial cameras, which cooperate with the light source system at different positions to detect one or more defects, that is, to collect image information of the front, back and two sides of the ribbon, and feed it back to the control system in real time for image defect identification.

6. The integrated webbing defect detection device according to claim 5, characterized in that: Industrial cameras use three types of cameras, namely the first camera, the second camera and the third camera; The first camera is a black and white camera, which is arranged on one side of the belt surface and collects the texture defect image of the belt surface; The second camera is a color camera, which is arranged on one side of the webbing surface to collect color defects on the webbing surface; the first camera and the second camera are arranged in upper and lower positions; Based on the arrangement of the fifth roller, the sixth roller and the seventh roller, the ribbon that passes through the first camera and the second camera twice is the front and back sides, and the image information collected by the first camera and the second camera is the information of the front and back sides of the ribbon; The third camera is a black and white or color camera, which collects surface hair defects on the side of the ribbon; Based on the layout of the eighth roller, the tenth roller, the eleventh roller and the twelfth roller, different sides of the ribbon pass through the third camera twice; the image information collected by the third camera is the information of the two sides of the ribbon.

7. The integrated webbing defect detection device according to claim 5, characterized in that: The distance between the industrial camera and the webbing is adjusted within the range of 50 to 750 mm according to the width of the webbing.

8. The integrated webbing defect detection device according to claim 5, characterized in that: The image acquisition system supports high-speed motion image acquisition, or acquisition during regular pauses of the running system.

9. The integrated webbing defect detection device according to claim 1, characterized in that: Also included is a marking system for marking defects on the webbing; the marking system includes: The label paper storage silo is used to store label paper. The label paper is attached to the label tape, which is in the form of a roll. The label running servo motor is used to drive the label belt to move; The label paper compacting and pasting mechanism peels the label paper off the label tape and pastes it on the defective part of the tape; The sensor is located behind the label paper compacting and pasting mechanism and is used to detect whether label paper is pasted on the ribbon.

10. The integrated webbing defect detection device according to claim 1, characterized in that: The control system includes one or more of a programmable logic controller, a single chip microcomputer, a motion controller, an industrial computer, and a server.

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