Broken yarn image detection device for warp knitting loom
By using an image detection unit and a background plate on a warp-knitting machine, efficient and accurate detection of broken yarns for different fabric types is achieved, solving the problems of small detection range and misjudgment in existing devices, and improving detection accuracy and efficiency.
Patent Information
- Application Number
- CN202423167273.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing warp knitting machine broken yarn detection devices have a small detection range, cannot be applied to a wide range of fabric types, and are prone to misjudgment, leading to an increase in downtime.
By employing an image detection unit and a background plate, the camera module captures black and white stripe images at high speed. The background plate is used to compare stripe features, and motor adjustment is combined to achieve multi-angle shooting, thereby improving detection accuracy and efficiency.
It achieves efficient and accurate yarn breakage detection for different fabric types, reduces misjudgments and downtime, and is suitable for multi-angle loop detection.
Smart Images
Figure CN223852926U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a broken filament image detection device for warp knitting machine more specifically, it relates to a kind of for warp knitting machine. BACKGROUND
[0002] Warp knitting machine is a kind of machine for weaving warp knitted fabric, its basic principle is to weave into loop and interlock by a group or multiple groups of parallelly arranged warp yarn under the synergistic effect of loop forming member, to form fabric.
[0003] At present, warp knitting machine in the process of manufacturing article, due to yarn quality problem, machine component failure etc. Broken filament phenomenon can appear, for the existing broken filament phenomenon, detection device can be used to detect broken filament, then timely stop.
[0004] However, the existing cloth surface photography is using camera to take photo, according to cloth surface flaw to stop, accuracy is relatively high, but the defect cloth detected by cloth surface photography is relatively long, there is cloth type limitation, detection range is small, not applicable to large range cloth type, present a kind of broken filament image detection device for warp knitting machine, to improve the existing problems. INVENTION CONTENTS
[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a broken filament image detection device for warp knitting machine.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0007] A broken filament image detection device for warp knitting machine, including support assembly, the upper portion of support assembly is provided with auxiliary assembly, the upper portion of auxiliary assembly is provided with image detection unit, and the auxiliary assembly is used to assist image detection unit to carry out detection work.
[0008] Among them, the support assembly includes base, the top of base is provided with support frame, and the top of support frame is provided with link plate.
[0009] The auxiliary assembly includes first motor, the side of first motor is provided with driving wheel, the lower portion of driving wheel is provided with driven wheel, the driven wheel is engaged with driving wheel, and the side of driven wheel is provided with background plate.
[0010] The image detection unit includes second motor, one end of second motor is provided with mounting bracket, the side of mounting bracket is provided with third motor, the middle position of mounting bracket is provided with camera module, and the camera module is used to high-speed snapshot image.
[0011] By adopting the technical scheme, the camera module further comprises an image sensor, an image controller and a motor control interface, wherein the image sensor can be set with various acquisition windows, and the exposure time and intensity can be set; the image controller can acquire a high-resolution image, compress the image in JPG, and then transmit the image to a host computer through a USB interface; finally, the well-designed software and hardware anti-interference measures in the camera module enable the module to work well in a complex electromagnetic environment with static interference and motor frequency conversion interference, and the image detection unit further comprises a visual control host computer integrating a mainboard, a touch, a display, image acquisition, control and network, the visual control host computer is small and convenient, and can be connected through a remote cloud platform, thereby facilitating remote maintenance and debugging.
[0012] The utility model further sets up: the output of first motor is connected with first screw rod, first screw rod one end away from first motor is connected with support frame, first screw rod is through the center of first motor.
[0013] The utility model further sets up: the center of driven wheel is throughed with second screw rod, second screw rod both ends are connected with support frame rotation respectively, second screw rod is connected with background board fixedly
[0014] Through adopting the technical scheme, when the first motor starts, the first motor drives the driving wheel to rotate, under the meshing state, the driving wheel drives the driven wheel to rotate, and the driven wheel can drive the background board to realize the inclination of the angle, at this time, the background board can be matched with the coil, and is suitable for the coil with different angles, because the image state presents black and white stripe state in the image detection, the background board can be set to compare the stripe characteristics, the black and white stripes on the main image and the background board stripes are compared, the frequency, direction and intensity of the stripes can be understood, the broken filament condition is judged correctly, the misjudgment condition is avoided, and the shutdown frequency is reduced.
[0015] The utility model further sets up: the top of link plate is provided with fixed plate, fixed plate is connected with link plate fixedly, third motor is installed in the bottom of fixed plate.
[0016] The utility model further sets up: the output of second motor is connected with mounting bracket, and the mounting bracket is rotatably connected between the fixed plate.
[0017] The utility model further sets up: the output of third motor is connected with camera module, and one end of camera module away from third motor is rotatably connected with mounting bracket.
[0018] By adopting the technical scheme, the third motor is started, the second motor can drive the mounting frame to rotate as a whole around the fixed plate, the third motor is started, the third motor can drive the camera module to realize overturning, the second motor and the third motor are arranged, multi-angle shooting of the camera module can be realized, the shooting angle is increased, the shooting efficiency is improved, meanwhile, under the driving of the second motor and the third motor, the camera module can also be adapted to the background plate, and the detection precision is improved.
[0019] To sum up, the application has at least one of the following beneficial technical effects:
[0020] 1. By arranging the camera module, the camera module can take photos of the warp knitting machine in the loop forming state, when there is a broken filament, there will be a vacancy in the image, and the vacancy in the image is detected to determine whether there is a broken yarn; the images captured at the loop forming moment of different cloth types are basically the same, and the images present black and white stripes, thereby avoiding the trouble of collecting a large amount of defect cloth data for cloth surface photographic detection using a neural network algorithm, and the same algorithm can be used to process any cloth type, and since the collected images can basically be regarded as black and white stripes, if a broken yarn occurs, the original white stripe becomes a black stripe, thereby realizing detection of the broken filament.
[0021] 2. By arranging the background plate, the background plate can compare the stripe features, the black and white stripes on the main image and the background plate stripes are compared, the frequency, direction, intensity and other features of the stripes can be understood, the broken filament condition can be correctly judged, and misjudgment can be avoided, and the number of shutdowns is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is a structure schematic view of a broken filament image detection device for a warp knitting machine in the utility model.
[0023] Figure 2 It is an isometric view of the utility model. Figure 1
[0024] Figure 3 It is an enlarged structure schematic view of area A in the utility model. Figure 2
[0025] Reference signs: 1, support assembly; 11, base; 12, support frame; 13, connecting plate;
[0026] 2, auxiliary assembly; 21, first motor; 22, driven wheel; 23, driving wheel; 24, background plate;
[0027] 3, image detection unit; 31, second motor; 32, third motor; 33, mounting frame; 34, camera module; 35, fixed plate. DETAILED DESCRIPTION
[0028] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.
[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.
[0030] Embodiment one, please refer to Figures 1-3 The present application provides the following technical solutions:
[0031] Please refer to Figure 1 A broken filament image detection device for a warp knitting machine, comprising a support assembly 1, an auxiliary assembly 2 is arranged above the support assembly 1, and an image detection unit 3 is arranged above the auxiliary assembly 2, and the auxiliary assembly 2 is used for assisting the image detection unit 3 to perform detection work.
[0032] Please refer to Figure 1 and Figure 2 The support assembly 1 comprises a base 11, a support frame 12 is arranged on the top of the base 11, and a connecting plate 13 is arranged on the top of the support frame 12.
[0033] Please refer to Figure 1 and Figure 2 The auxiliary assembly 2 comprises a first motor 21, a driving wheel 23 is arranged on one side of the first motor 21, a driven wheel 22 is arranged below the driving wheel 23, the driven wheel 22 is engaged with the driving wheel 23, and a background plate 24 is arranged on one side of the driven wheel 22.
[0034] The image detection unit 3 comprises a second motor 31, an installation frame 33 is arranged on one end of the second motor 31, a third motor 32 is arranged on one side of the installation frame 33, a camera module 34 is arranged at the middle position of the installation frame 33, and the camera module 34 is used for high-speed snapshot image.
[0035] The camera module 34 further comprises an image sensor, an image controller and a motor control interface, wherein the image sensor can be set with various collection windows, and the exposure time and intensity can be set; the image controller can collect high-resolution images, and then compress JPG, and then transmit to the host through the USB interface; finally, the carefully designed software and hardware anti-interference measures in the camera module 34 enable the module to work well in complex electromagnetic environments such as static interference and motor frequency interference.
[0036] The image detection unit 3 further comprises a visual control host integrating a mainboard, touch, display, image collection, control and network, and the visual control host is small and convenient, can be connected through a remote cloud platform, and is convenient for remote maintenance and debugging.
[0037] The principle of image detection is as follows:
[0038] The camera module 34 takes a photo of the loop state of the warp knitting machine. When there is a broken yarn, there will be a vacancy in the image. By detecting the vacancy in the image, it can be determined whether there is a broken yarn. The images captured at the loop time of different cloth types are basically the same. The image presents a black and white stripe state, thereby avoiding the trouble of collecting a large amount of defect cloth data for cloth surface photography detection using neural network algorithm. No matter what cloth type is, the same algorithm can be used for processing. Since the collected image can basically be regarded as a black and white stripe, if a broken yarn appears, the original white stripe becomes a black stripe, thereby realizing the detection of broken yarns.
[0039] Referring to Figure 1 and Figure 2 , the output end of the first motor 21 is connected with a first lead screw, one end of the first lead screw away from the first motor 21 is rotationally connected with the support frame 12, and the first lead screw penetrates the center of the first motor 21.
[0040] Referring to Figure 1 and Figure 2 , a second lead screw is arranged to penetrate the center of the driven wheel 22, both ends of the second lead screw are rotationally connected with the support frame 12, and the second lead screw is fixedly connected with the background plate 24.
[0041] The use process of the background plate 24 is as follows:
[0042] When the first motor 21 is started, the first motor 21 drives the driving wheel 23 to rotate. In the meshing state, the driving wheel 23 drives the driven wheel 22 to rotate, and the driven wheel 22 can drive the background plate 24 to realize the inclination of the angle. At this time, the background plate 24 can be adapted to the loop, and is suitable for loops with different angles.
[0043] Since the image state in image detection presents a black and white stripe state, the background plate can be set to compare the stripe features. By comparing the black and white stripes on the main image with the background plate stripes, the frequency, direction, intensity and other characteristics of the stripes can be understood, the broken yarn condition can be correctly judged, the misjudgment condition can be avoided, and the number of shutdowns can be reduced.
[0044] Referring to Figure 3 , the top of the adapter plate 13 is provided with a fixed plate 35, the fixed plate 35 is fixedly connected with the adapter plate 13, and the third motor 32 is installed at the bottom of the fixed plate 35.
[0045] Referring to Figure 3 , the output end of the second motor 31 is connected with the mounting bracket 33, and the mounting bracket 33 is rotationally connected between the fixed plate 35.
[0046] Referring to Figure 3The output end of the third motor 32 is connected with the camera module 34, and the end of the camera module 34 away from the third motor 32 is rotationally connected with the mounting frame 33.
[0047] Starting the third motor 32, the second motor 31 can drive the mounting frame 33 to rotate as a whole around the fixed plate 35, and starting the third motor 32, the third motor 32 can drive the camera module 34 to realize overturning.
[0048] Specifically, first, the first motor 21 is started to drive the background plate 24 to adjust the inclination angle to adapt to the looping angle of the warp knitting machine, and then the second motor 31 and the third motor 32 are started to adjust the angle of the camera module 34 to adapt to the background plate 24, so that the looping image can be accurately photographed, and then it is judged whether there is a broken filament according to the state of the image, if there is a broken filament, the machine is stopped in time to avoid more broken filaments, otherwise the warp knitting machine will continue to work.
[0049] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.
Claims
1. A broken yarn image detecting device for a warp knitting machine, characterized by: The application relates to a support assembly (1) provided with an auxiliary assembly (2) on the top, and an image detection unit (3) on the top of the auxiliary assembly (2), wherein the auxiliary assembly (2) is used for assisting the image detection unit (3) in detection work. The support assembly (1) comprises a base (11) provided with a support frame (12) on the top, and the support frame (12) is provided with a connecting plate (13) on the top. The auxiliary assembly (2) comprises a first motor (21) provided with a driving wheel (23) on one side, a driven wheel (22) below the driving wheel (23), and a background plate (24) on one side of the driven wheel (22). The image detection unit (3) comprises a second motor (31) provided with a mounting frame (33) on one end, a third motor (32) on one side of the mounting frame (33), and a camera module (34) at the middle position of the mounting frame (33), wherein the camera module (34) is used for high-speed image grabbing.
2. A broken yarn image detecting device for a warp knitting machine according to claim 1, characterized in that: The output end of the first motor (21) is connected with a first screw rod, one end of the first screw rod away from the first motor (21) is rotationally connected with the support frame (12), and the first screw rod penetrates the center of the first motor (21).
3. A broken yarn image detecting device for a warp knitting machine according to claim 2, characterized in that: The center of the driven wheel (22) is provided with a second screw rod penetratingly arranged, the two ends of the second screw rod are respectively rotationally connected with the support frame (12), and the second screw rod is fixedly connected with the background plate (24).
4. A broken yarn image detecting device for a warp knitting machine according to claim 1, characterized in that: The top of the connecting plate (13) is provided with a fixed plate (35) fixedly connected with the connecting plate (13), and the third motor (32) is mounted on the bottom of the fixed plate (35).
5. A broken yarn image detecting device for a warp knitting machine according to claim 4, wherein: The output end of the second motor (31) is connected with the mounting frame (33), and the mounting frame (33) is rotationally connected with the fixed plate (35).
6. A broken yarn image detecting device for a warp knitting machine according to claim 5, wherein: The output end of the third motor (32) is connected with the camera module (34), and one end of the camera module (34) away from the third motor (32) is rotationally connected with the mounting frame (33).