Cloth inspecting machine

Abstract

The utility model relates to the technical field of textile machinery, and particularly discloses a cloth inspecting machine which comprises a machine frame, a cloth conveying device, a cloth inspecting device and an electric control device. The cloth conveying device comprises an unwinding mechanism, a winding mechanism, a cloth guiding mechanism located between the unwinding mechanism and the winding mechanism, and a cloth penetrating mechanism used for penetrating cloth from the unwinding mechanism to the winding mechanism through the cloth guiding mechanism. The cloth inspecting device comprises a cloth spreading mechanism used for spreading cloth guided by the cloth guiding mechanism and a camera shooting unit used for shooting images of the cloth spread by the cloth spreading mechanism, and the electric control device is electrically matched with the cloth conveying device and the cloth inspecting device. The control unit is used for analyzing images shot by the camera shooting unit and adjusting the conveying speed of the cloth spreading mechanism, the unwinding mechanism and the winding mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile machinery technical field especially discloses a cloth inspecting machine. BACKGROUND

[0002] The cloth inspecting machine is important equipment for detecting cloth quality, identifying cloth flaws and recording cloth information in the textile processing process. At present, there are mainly two types of cloth inspecting machines on the market: the traditional manual cloth inspecting machine mainly relies on manual visual inspection of cloth flaws, and the operator needs to constantly rotate the cloth, which is high in working strength, low in detection efficiency and prone to misjudgment or omission due to subjective factors. The semi-automatic or automatic cloth inspecting machine is usually equipped with detection instruments, which can automatically detect the surface flaws of the cloth and mark at specific positions. However, the existing automatic cloth inspecting machine still has problems in structural design, affecting the use effect.

[0003] At present, the cloth inspecting machines on the market mainly face the following technical problems: the traditional cloth inspecting machine usually needs manual assistance to pass the cloth, which is time-consuming and prone to errors, reducing production efficiency. In the prior art, the tension of the cloth usually depends on the mechanical tension rod or fixed roller adjustment, which cannot be dynamically adjusted according to different cloth materials, easily leading to cloth relaxation or stretching deformation, affecting the detection accuracy. The winding mechanism of many existing cloth inspecting machines cannot be adjusted in the radial direction, leading to uneven winding of the cloth, affecting the smooth progress of the subsequent process. Some cloth is prone to form wrinkles after unwinding, and the existing cloth inspecting machine usually relies on manual adjustment of the cloth state by the operator, which is difficult to ensure the flattening effect of the cloth. The light source of the traditional cloth inspecting machine is usually fixed above the detection area, leading to insufficient illumination in some areas, affecting the detection accuracy of the cloth flaws.

[0004] In summary, the existing cloth inspecting machine has the technical problems of insufficient automation, lack of dynamic adjustment capability and insufficient detection reliability. UTILITY MODEL CONTENTS

[0005] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a cloth inspecting machine to solve the above technical problems.

[0006] To achieve the above purpose, the utility model provides a cloth inspecting machine, which comprises a rack, a cloth conveying device, a cloth inspecting device and an electric control device.

[0007] The cloth conveying device comprises a unwinding mechanism, a winding mechanism, a cloth guiding mechanism between the unwinding mechanism and the winding mechanism, a cloth threading mechanism for threading the cloth from the unwinding mechanism to the winding mechanism through the cloth guiding mechanism, the cloth inspecting device comprises a cloth spreading mechanism for spreading the cloth guided by the cloth guiding mechanism, a camera unit for shooting the image of the cloth spread by the cloth spreading mechanism, the electric control device is electrically connected with the cloth conveying device and the cloth inspecting device, for analyzing the image shot by the camera unit and adjusting the transmission speed of the cloth spreading mechanism, the unwinding mechanism and the winding mechanism.

[0008] Further, the camera unit has a first camera unit and a second camera unit, the electric control device comprises a first detection module and a second detection module connected with the two camera units respectively, the first detection module is used for detecting and analyzing the wrinkles of the cloth spread by the cloth spreading mechanism in cooperation with the first camera unit, the cloth inspecting device further comprises a multi-axis labeling mechanism connected with the second detection module, the second detection module is used for detecting and analyzing the defects of the cloth spread by the cloth spreading mechanism in cooperation with the second camera unit, and the multi-axis labeling mechanism is used for marking the defects detected by the second detection module.

[0009] Further, the unwinding mechanism comprises a first base arranged on one side of the rack, a unwinding support arranged on the first base, a weight sensor arranged between the first base and the unwinding support, a unwinding roller rotatably arranged on the unwinding support and used for bearing the external cloth roll, a first driving motor connected with the unwinding roller, and a weight instrument electrically connected with the weight sensor.

[0010] Further, the cloth threading mechanism comprises a plurality of guide rollers rotatably arranged on the rack, a first gear coaxially arranged with the guide rollers, an annular toothed belt engaged with the first gear, a second driving motor connected with the first gear or / and the guide rollers, and a cloth clamping manipulator arranged on the annular toothed belt, the second driving motor is used for driving the annular toothed belt to drive the cloth clamping manipulator to reciprocate between the unwinding mechanism and the winding mechanism.

[0011] Further, the winding mechanism comprises a second base arranged on the other side of the rack, a winding support reciprocally arranged on the second base, a transverse driving assembly connected with the winding support, a winding roller rotatably arranged on the winding support, a third driving motor connected with the winding roller, and an offset detector arranged in cooperation with the transverse driving assembly, the offset detector is used for detecting the position offset information of the cloth wound by the winding roller and adjusting the reciprocating movement of the winding support driven by the transverse driving assembly to correct the cloth.

[0012] Further, the cloth guiding mechanism comprises an arc-shaped light guide table arranged on the frame and a first detection light source, the arc-shaped light guide table has an outwardly convex smooth arc surface, the first detection light source emits a strip-shaped light on the outwardly convex smooth arc surface, and the camera unit is used for photographing the cloth attached to the outwardly convex smooth arc surface irradiated by the strip-shaped light.

[0013] Further, the cloth spreading mechanism comprises a cloth spreading roller rotatably arranged on the frame, two cloth spreading coils spirally arranged on the cloth spreading roller, and a fifth driving motor connected with the cloth spreading roller, and the two cloth spreading coils are opposite in spiral direction.

[0014] Further, the second detection module comprises a light striking platform matched with the cloth guiding mechanism and a second detection light source arranged above the light striking platform, the second camera unit is arranged in cooperation with the second detection light source and is electrically matched with the multi-axis labeling mechanism via the electric control device, the second camera unit transmits the photographed image to the electric control device, the electric control device analyzes the defect position on the cloth according to the image transmitted by the second camera unit, and triggers the multi-axis labeling mechanism to attach the external label to the defect position of the cloth carried by the light striking platform.

[0015] Further, the multi-axis labeling mechanism comprises a first linear module and a second linear module, the first linear module comprises a sixth driving motor, a first sliding block connected with the sixth driving motor, and a first sliding rail in sliding cooperation with the first sliding block, the second linear module has the same structure as the first linear module, and the first linear module and the second linear module are arranged in cross.

[0016] The multi-axis labeling mechanism further comprises a label conveying assembly arranged in cooperation with the first linear module or the second linear module, a suction nozzle arranged on one side of the label conveying assembly, and a vacuum system connected with the suction nozzle, the label conveying assembly comprises a label roller rotatably arranged on the first sliding block, a conveying track arranged at the bottom of the label roller, and a paper collecting wheel rotatably arranged at the bottom of the conveying track, the label roller is used for unwinding the external label roll to the conveying track, and the vacuum system picks up the label on the conveying track under the linkage action of the first linear module and the second linear module to attach the label to the defect position on the cloth.

[0017] Further, the cloth inspection device further comprises an intelligent code recording module arranged between the unwinding mechanism and the winding mechanism, the intelligent code recording module comprises a lifting driving assembly arranged on the frame, a metering wheel arranged at the output end of the lifting driving assembly and used for abutting against the cloth, a code recorder coaxially connected with the metering wheel, and a position sensor electrically cooperating with the lifting driving assembly, the position sensor is used for detecting the position information of the end portion of the cloth moved by the cloth moving mechanism and triggering the lifting mechanism to drive the metering wheel to move forward to abut against the cloth, and the position sensor triggers the lifting driving assembly to drive the metering wheel to move reversely to reset when the cloth is not detected.

[0018] The utility model discloses a cloth inspecting machine has the beneficial effects: the utility model discloses a cloth inspecting machine through a series of mutually matched components, realize efficient detection and processing to cloth. First, cloth transmission device combines the unwinding mechanism and winding mechanism, so that the outside roll material can smoothly pass through the machine, and in turn through the first detection module and second detection module. Through feedback signal, the working parameter of the electric control device can be adjusted in real time to the cloth spreading mechanism and the labeling mechanism, so as to ensure that the cloth maintains the appropriate tension and state in the whole process. In addition, the tension control mechanism further enhances the stability of the whole machine, so that the cloth does not appear excessive relaxation or tension in the conveying process.

[0019] The various functional units inside the cloth inspecting device, such as the flattening, defect detection, intelligent coding, etc. modules, work efficiently and accurately, improving the work efficiency and accuracy. The wrinkle and second detection module can timely identify the problem points on the surface of the cloth, and the multi-axis labeling mechanism can quickly and accurately paste the label to the defective position. This precise and intelligent design significantly improves the application effect of the cloth inspecting machine in fabric quality control, thereby providing a more reliable, efficient and convenient solution for the textile industry. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure schematic diagram of the cloth inspecting machine of the utility model;

[0021] Figure 2 It is the structure schematic diagram of the unwinding mechanism of the cloth inspecting machine of the utility model;

[0022] Figure 3 It is the structure schematic diagram of the winding mechanism of the utility model;

[0023] Figure 4 It is the structure schematic diagram of the transverse drive assembly of the utility model;

[0024] Figure 5 It is the structure schematic diagram of the cloth penetrating mechanism of the utility model;

[0025] Figure 6 It is the structure schematic diagram of the first detection light source of the utility model;

[0026] Figure 7 It is the structure schematic diagram of the cloth inspecting machine of the utility model after being partially cut;

[0027] Figure 8 It is the structure schematic diagram of the multi-axis labeling mechanism of the utility model;

[0028] Figure 9 It is the structure schematic diagram of the label conveying assembly of the utility model;

[0029] Figure 10 It is the structure schematic diagram of the cloth spreading mechanism of the utility model;

[0030] Figure 11 It is the position schematic view of the tension detector of the utility model;

[0031] Figure 12 It is the structure schematic view of the intelligent code recording module of the utility model.

[0032] Reference signs include:

[0033] 1, rack; 2, cloth conveying device; 3, cloth inspection device; 4, electric control device; 21, unwinding mechanism; 211, first base; 212, weight sensor; 213, unwinding support; 214, first drive motor; 215, unwinding roller; 216, weight instrument; 22, cloth passing mechanism; 221, material guide roller; 222, first gear; 223, ring gear belt; 224, second drive motor; 225, cloth clamping manipulator; 23, winding mechanism; 231, second base; 232, winding support; 233, transverse driving assembly; 2331, rolling part; 2332, rack; 2333, deviation rectifying rod; 2334, fourth drive motor; 2335, second gear; 234, winding roller; 235, third drive motor; 236, deviation detector; 241, tension detector; 25, intelligent code recording module; 251, lifting driving assembly; 252, metering wheel; 253, code recorder; 254, position sensor; 311, arc-shaped light guide platform; 312, first detection light source; 313, first camera unit; 32, second detection module; 321, lightening platform; 322, second detection light source; 323, second camera unit; 33, cloth spreading mechanism; 331, cloth spreading roller; 332, cloth spreading coil; 333, fifth drive motor; 34, multi-axis labeling mechanism; 341, first linear module; 3411, sixth drive motor; 3412, first sliding block; 3413, first sliding rail; 342, second linear module; 343, label conveying assembly; 3431, label roller; 3432, conveying track; 3433, paper collecting wheel; 344, suction nozzle. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with embodiments and drawings, and the content mentioned in the embodiments is not a limitation on the utility model.

[0035] Please refer to Figures 1 to 12 The utility model discloses a cloth inspection machine, including rack 1, cloth conveying device 2, cloth inspection device 3 and electric control device 4.

[0036] The cloth conveying device 2 comprises a unwinding mechanism 21, a winding mechanism 23, a cloth guiding mechanism between the unwinding mechanism 21 and the winding mechanism 23, a cloth threading mechanism 22 for threading the cloth from the unwinding mechanism 21 to the winding mechanism 23 through the cloth guiding mechanism, the cloth inspecting device 3 comprises a cloth spreading mechanism 33 for spreading the cloth guided by the cloth guiding mechanism, a camera unit for shooting the image of the cloth spread by the cloth spreading mechanism 33, and the electric control device 4 is electrically connected with the cloth conveying device 2 and the cloth inspecting device 3, for analyzing the image shot by the camera unit and adjusting the transmission speed of the cloth spreading mechanism 33, the unwinding mechanism 21 and the winding mechanism 23.

[0037] Specifically, the camera unit has a first camera unit 313 and a second camera unit 323, the electric control device 4 comprises a first detection module and a second detection module 32 connected with the two camera units respectively, the first detection module is used for detecting and analyzing the wrinkles of the cloth spread by the cloth spreading mechanism 33 in cooperation with the first camera unit 313, the cloth inspecting device 3 further comprises a multi-axis labeling mechanism 34 connected with the second detection module 32, the second detection module 32 is used for detecting and analyzing the defects of the cloth spread by the cloth spreading mechanism 33 in cooperation with the second camera unit 323, and the multi-axis labeling mechanism 34 is used for labeling the defects detected by the second detection module 32.

[0038] Specifically, the unwinding mechanism 21 is located on one side of the cloth inspecting machine, and the cloth roll outside is placed on the unwinding roller 215 of the unwinding mechanism 21, and after the unwinding roller 215 unwinds one end of the cloth, the cloth is manually supplied to the cloth threading mechanism 22. The cloth threading mechanism 22 is composed of a plurality of guide rollers 221, gears and an annular toothed belt 223, which is used to accurately transmit the cloth to the winding mechanism 23. The winding mechanism 23 stably winds the cloth back through the transverse driving assembly 233 and the winding roller 234. Through this structure, the cloth can realize stable flow on the seamless transmission path, and automatic control is realized, and manual intervention is reduced.

[0039] This structure not only improves the transmission efficiency of the cloth, but also realizes efficient automatic cloth threading through the gear chain transmission and the cloth clamping mechanical hand 225, reduces the operation complexity, avoids the error caused by manual operation in the cloth threading process, and improves the automation level of the production line.

[0040] Specifically, the unwinding mechanism 21 includes a first base 211 arranged on one side of the frame 1, an unwinding support 213 arranged on the first base 211, a weight sensor 212 arranged between the first base 211 and the unwinding support 213, two unwinding rollers 215 rotatably arranged on the unwinding support 213 and used for bearing the external cloth roll, and a first driving motor 214 connected with the unwinding rollers 215, and the unwinding mechanism 21 further includes a weight meter 216 electrically connected with the weight sensor 212, and the weight meter 216 is electrically connected with an alarm lamp.

[0041] In the embodiment, the first driving motor 214 is connected with the two unwinding rollers 215 through a gear and belt mechanism, the external cloth roll is detachably arranged on any one of the two unwinding rollers 215, when the weight sensor 212 detects that the weight of the roll reaches a minimum threshold, the alarm lamp is triggered to flash, and a new roll is manually replaced or the end of the cloth on the other unwinding roller 215 is guided to the cloth clamping manipulator 225 of the cloth threading mechanism 22.

[0042] Specifically, the plurality of guide rollers 221 of the cloth threading mechanism 22 are symmetrically arranged on both sides of the frame 1 through bearings, coaxially fixed first gears 222 are arranged at both ends of the guide rollers 221, and an annular toothed belt 223 is engaged with the first gears 222 and surrounds the guide rollers 221 to form a closed-loop transmission path. A second driving motor 224 (such as a stepping motor) is connected with one of the guide rollers 221 or the gear shaft end through a shaft coupling, drives the guide rollers 221 to rotate, and drives the annular toothed belt 223 to rotate in a loop. The cloth clamping manipulator 225 is fixed on the outer surface of the annular toothed belt 223 through bolts, the clamping jaw adopts a spring return structure, when the manipulator moves to the unwinding end, the air cylinder on the side wall of the frame 1 pushes the clamping jaw to open, the operator inserts the end of the cloth into the gap between the clamping jaw and the guide roller 221, and then the air cylinder is reset, and the spring force clamps the cloth; then the second driving motor 224 is started, the annular toothed belt 223 pulls the cloth clamping manipulator 225 to move along the cloth guiding path to the winding mechanism 23, and the automatic threading of the end of the cloth is completed.

[0043] The cloth clamping manipulator 225 realizes the automatic cloth threading through the linkage of the guide rollers 221 and the gear and belt, replaces the manual threading, and the efficiency is improved by more than 50%; the spring-air cylinder cooperative action ensures that the cloth clamping is stable and the cloth clamping is quickly released, and the cloth is prevented from being damaged; the transmission path of the annular toothed belt 223 covers the whole process from unwinding to winding, and is suitable for the cloth threading requirements of different widths (0.5-3m), and has strong compatibility

[0044] Specifically, the second base 231 of the winding mechanism 23 is fixed to the right side of the frame 1 by bolts, the bottom of the winding support 232 is connected to the linear guide rail on the base through a sliding block, the rack 2332 of the transverse driving assembly 233 is fixed along the length direction of the base, the fourth driving motor 2334 (servo motor) drives the second gear 2335 to engage with the rack 2332 through a shaft coupling, and the winding support 232 is driven to move transversely and reciprocally. The winding roller 234 is installed on the winding support 232 through a bearing, and the third driving motor 235 (variable frequency motor) drives the winding roller 234 to rotate through a synchronous belt to wind the cloth. The offset detector 236 (laser transmission sensor) is installed in front of the winding roller 234 to monitor the position of the cloth edge in real time; when the detected cloth offset exceeds the set threshold (such as ±5mm), the electric control device 4 triggers the fourth driving motor 2334 to drive the winding support 232 to move in the opposite direction of the offset until the cloth edge returns to the center alignment position.

[0045] Specifically, the cloth guide mechanism includes an arc-shaped light guide table 311 and a first detection light source 312 arranged on the frame. The arc-shaped light guide table 311 has an outward convex smooth arc surface, and the first detection light source 312 emits a strip-shaped light that irradiates the outward convex smooth arc surface. The camera unit is used to take pictures of the cloth attached to the outward convex smooth arc surface irradiated by the strip-shaped light. The arc-shaped light guide table 311 is embedded with a light guide fiber, and the surface is ground to achieve uniform scattering of light. The radius of curvature of the arc-shaped light guide table 311 matches the natural drooping curvature of the cloth (such as R=500mm). The first detection light source 312 is a high-brightness white light LED array symmetrically installed on both sides of the light guide table. The light irradiates the cloth surface at an incident angle of 45°. The first camera unit 313 uses a 5 million pixel industrial camera, and the lens axis is perpendicular to the cloth plane. The wrinkle area is identified through an image processing algorithm (such as gray scale gradient analysis).

[0046] The unwinding roller 331 of the unwinding mechanism 33 is fixed at both ends through bearings on the frame 1, and the surface is spirally wound with two opposite direction plastic flattening coils (left-handed and right-handed, with a pitch of 10mm). The fifth driving motor 333 (servo motor) drives the unwinding roller 331 to rotate through a shaft coupling. The first camera unit 313 transmits the wrinkle area and position information to the electric control device 4 in real time, triggers the fifth driving motor 333 to adjust the rotation speed (0-100rpm) and direction of the unwinding roller 331, and applies bidirectional flattening force to the cloth through the reverse spiral coil.

[0047] Specifically, the rolling member 2331 of the transverse driving assembly 233 adopts two groups of high-precision linear bearings symmetrically installed on the linear guide rails on both sides of the second base 231. The rack 2332 is made of hardened alloy steel and is fixed in parallel to the center line of the base by screws. The fourth driving motor 2334 is an absolute value encoder type servo motor, which is installed on the side of the correction rod 2333 through a flange, and its output shaft is connected to the second gear 2335 through a shaft coupling. The second gear 2335 is in precise engagement with the rack 2332.

[0048] The offset detector 236 adopts a linear array CCD camera to capture the position of the cloth edge in real time at a sampling rate of 2000Hz. When the detected offset exceeds ±3mm, the electric control device 4 sends a pulse signal to the fourth driving motor 2334 to drive the gear to rotate and drive the correction rod 2333 to move transversely at a speed of 0.5m / s until the cloth edge returns to the reference position (error ±0.2mm). The built-in torque limiting function of the motor prevents overload damage to the cloth.

[0049] Specifically, the second detection module 32 includes a light striking platform 321 cooperating with the cloth guiding mechanism, a second detection light source 322 arranged above the light striking platform 321, and a second camera unit 323 cooperating with the second detection light source 322 and electrically cooperating with the multi-axis labeling mechanism 34 via the electric control device 4. The second camera unit 323 transmits the captured image to the electric control device 4, which analyzes the defect position on the cloth according to the image transmitted by the second camera unit 323, and triggers the multi-axis labeling mechanism 34 to attach an external label to the defect position of the cloth carried by the light striking platform 321.

[0050] The light striking platform 321 of the second detection module 32 adopts an acrylic transparent plate with an anti-reflection coating sprayed on the surface. A diffuse reflection LED array (color temperature 6500K, illuminance 2000lux) is embedded below the platform. The second detection light source 322 is an adjustable angle strip-shaped white light LED (power 30W) that irradiates the cloth surface at an angle of 60°. The second camera unit 323 selects a 50 million pixel high-speed CMOS camera (frame rate 120fps) equipped with a telecentric lens, which is vertically installed 50cm above the light striking platform 321. The FPGA runs the YOLOv5 algorithm in real time to identify and locate defects (minimum recognition size 0.1mm 2 ). After detecting the defect, the camera transmits the coordinates (accuracy ±0.2mm) to the multi-axis labeling mechanism 34 through the EtherCAT protocol, triggering the suction nozzle 344 to complete the label picking, positioning and attaching actions within 0.3 seconds.

[0051] Specifically, the first linear module 341 (X-axis) and the second linear module 342 (Y-axis) of the multi-axis labeling mechanism 34 are arranged in a cross layout, both of which are driven by ball screws. The sixth drive motor 3411 (servo motor) is connected to the screw through a shaft coupling, drives the first sliding block 3412 to move horizontally along the first sliding rail 3413 (hardened steel guide rail, surface plated with chromium), and the stroke range is 0-1.5m; the second linear module 342 is vertically installed on the first sliding block 3412, and has the same structure as the X-axis, and drives the suction nozzle 344 to move along the Y-axis. The label roller 3431 controls the label paper unwinding tension through a magnetic powder clutch, the surface of the conveying track 3432 is provided with a silica gel guide strip to prevent label deviation, and the paper collecting wheel 3433 is driven by a stepping motor to recover the base paper. The suction nozzle 344 adopts a silica gel suction cup, which adsorbs the label through a vacuum generator (negative pressure-80kPa), and switches to positive pressure (+50kPa) during labeling to release the label. The electronic control device 4 generates a motion path based on the defect coordinates (X, Y), synchronously drives the two-axis servo motors through the EtherCAT bus, so that the suction nozzle 344 completes the label picking-positioning-pasting action within 0.2 seconds.

[0052] Specifically, the buffer space of the tension control mechanism is located on the side of the rack 1 close to the unwinding device, and is surrounded by two groups of adjustable-spacing guide rollers to form a U-shaped area, and the cloth is in a free sagging state between the guide rollers. The tension detector 241 adopts a combination of a non-contact ultrasonic electric eye and a pressure sensor: the non-contact ultrasonic electric eye is vertically installed at the top of the buffer space, and monitors the cloth sagging height in real time; the pressure sensor is integrated in the guide roller bearing seat, and measures the radial pressure when the cloth passes.

[0053] When the cloth sagging height exceeds the set threshold value (such as 200mm) or the pressure value exceeds the preset range (such as 15-25N), the electronic control device 4 adjusts the speed of the first drive motor 214 (servo motor with encoder) through the PID algorithm, and dynamically matches the cloth consumption speed of the subsequent process. For example, when the sagging height is detected to increase (the unwinding is too fast), the motor speed is reduced to slow down the unwinding; when the tension is detected to be too high (the sagging height is insufficient), the speed is increased to speed up the unwinding.

[0054] Specifically, the lifting drive assembly 251 of the intelligent marking module 25 selects a cylinder, the output end of which is connected with a support through a flange, the metering wheel 252 is rotationally arranged on the frame 1, and the surface of the metering wheel 252 is coated with a polyurethane rubber layer to increase the friction coefficient with the cloth and avoid slipping. The metering wheel 252 is coaxially connected with an incremental optical encoder, and each rotation corresponds to a cloth length of 10 cm. The position sensor 254 is an infrared reflection type photoelectric switch, which is installed at the cloth outlet end of the cloth feeding mechanism 22. When it is detected that the cloth end reaches below the metering wheel 252, the electric push rod is triggered to press the metering wheel 252 to the cloth surface, and the encoder starts to measure. When the cloth transmission is completed or the cloth is broken, the photoelectric switch signal disappears, the electric push rod is retracted to move the metering wheel 252 upward to reset, and the idle running is avoided.

[0055] The above is only a preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation and application range can be changed, and the content of the specification should not be understood as a limitation of the present application.

Claims

1. A cloth inspection machine characterized by: It comprises a rack (1), cloth conveying device (2), cloth inspection device (3) and electric control device (4). The cloth conveying device (2) comprises a unwinding mechanism (21), a winding mechanism (23), a cloth guide mechanism between the unwinding mechanism (21) and the winding mechanism (23), a cloth threading mechanism (22) for threading the cloth from the unwinding mechanism (21) to the winding mechanism (23) through the cloth guide mechanism, the cloth inspection device (3) comprises a cloth spreading mechanism (33) for spreading the cloth guided by the cloth guide mechanism, a camera unit for shooting the image of the cloth spread by the cloth spreading mechanism (33), and the electric control device (4) is electrically connected with the cloth conveying device (2) and the cloth inspection device (3) for analyzing the image shot by the camera unit and adjusting the transmission speed of the cloth spreading mechanism (33), the unwinding mechanism (21) and the winding mechanism (23).

2. The cloth inspecting machine according to claim 1, characterized in that: The camera unit has a first camera unit (313) and a second camera unit (323), the electric control device (4) comprises a first detection module and a second detection module (32) connected with the two camera units respectively, the first detection module is used for detecting and analyzing the wrinkles of the cloth spread by the cloth spreading mechanism (33) in cooperation with the first camera unit (313), the cloth inspection device (3) further comprises a multi-axis labeling mechanism (34) connected with the second detection module (32), the second detection module (32) is used for detecting and analyzing the defects of the cloth spread by the cloth spreading mechanism (33) in cooperation with the second camera unit (323), and the multi-axis labeling mechanism (34) is used for marking the defects detected by the second detection module (32).

3. The cloth inspecting machine according to claim 1, characterized in that: The unwinding mechanism (21) comprises a first base (211) arranged on one side of the rack (1), an unwinding support (213) arranged on the first base (211), a weight sensor (212) arranged between the first base (211) and the unwinding support (213), an unwinding roller (215) rotatably arranged on the unwinding support (213) and used for bearing the external cloth roll, and a first driving motor (214) connected with the unwinding roller (215), and the unwinding mechanism (21) further comprises a weight instrument (216) electrically connected with the weight sensor (212).

4. The cloth inspecting machine according to claim 1, characterized in that: The cloth threading mechanism (22) comprises a plurality of guide rollers (221) rotatably arranged on the rack (1), a first gear (222) coaxially arranged with the guide rollers (221), an annular toothed belt (223) engaged with the first gear (222), a second driving motor (224) connected with the first gear (222) and / or the guide rollers (221), and a cloth clamping manipulator (225) arranged on the annular toothed belt (223), and the second driving motor (224) is used for driving the annular toothed belt (223) to move the cloth clamping manipulator (225) reciprocally between the unwinding mechanism (21) and the winding mechanism (23).

5. The cloth inspecting machine according to claim 1, characterized in that: The winding mechanism (23) comprises a second base (231) arranged on the other side of the rack (1), a winding bracket (232) arranged on the second base (231) and capable of reciprocating movement, a transverse movement driving assembly (233) connected with the winding bracket (232), a winding roller (234) rotatably arranged on the winding bracket (232), a third driving motor (235) connected with the winding roller (234), and an offset detector (236) arranged in cooperation with the transverse movement driving assembly (233), wherein the offset detector (236) is used for detecting position offset information of the cloth wound by the winding roller (234) and regulating the transverse movement driving assembly (233) to drive the winding bracket (232) to reciprocate for cloth deviation correction.

6. The cloth inspecting machine according to claim 1, characterized in that: The cloth guiding mechanism comprises an arc-shaped light guiding table (311) and a first detection light source (312) arranged on the rack, the arc-shaped light guiding table (311) has a convex smooth arc surface, the first detection light source (312) is used for emitting a strip-shaped light on the convex smooth arc surface, and the camera unit is used for photographing the cloth attached to the convex smooth arc surface irradiated by the strip-shaped light.

7. The cloth inspecting machine according to claim 1, characterized in that: The cloth unwinding mechanism (33) comprises an unwinding roller (331) rotatably arranged on the rack (1), two unwinding coils (332) spirally arranged on the unwinding roller (331), and a fifth driving motor (333) connected with the unwinding roller (331), wherein the spiral directions of the two unwinding coils (332) are opposite.

8. The cloth inspecting machine according to claim 2, characterized in that: The second detection module (32) comprises a light striking platform (321) cooperating with the cloth guiding mechanism, a second detection light source (322) arranged above the light striking platform (321), a second camera unit (323) arranged in cooperation with the second detection light source (322) and electrically cooperating with the multi-axis labeling mechanism (34) via the electric control device (4), the second camera unit (323) transmits the photographed image to the electric control device (4), the electric control device (4) analyzes the defect position on the cloth according to the image transmitted by the second camera unit (323), and triggers the multi-axis labeling mechanism (34) to attach an external label to the defect position of the cloth carried by the light striking platform (321).

9. The cloth inspecting machine according to claim 2, characterized in that: The multi-axis labeling mechanism (34) comprises a first linear module (341) and a second linear module (342), the first linear module (341) comprises a sixth driving motor (3411), a first sliding block (3412) connected with the sixth driving motor (3411), and a first sliding rail (3413) in sliding cooperation with the first sliding block (3412), the second linear module (342) has the same structure as the first linear module (341), and the first linear module (341) and the second linear module (342) are arranged in cross. The multi-axis labeling mechanism (34) further comprises a label conveying assembly (343) arranged in cooperation with the first linear module (341) or the second linear module (342), a suction nozzle (344) arranged on one side of the label conveying assembly (343), and a vacuum system connected with the suction nozzle (344), the label conveying assembly (343) comprises a label roller (3431) rotatably arranged on the first sliding block (3412), a conveying track (3432) arranged at the bottom of the label roller (3431), and a paper collecting wheel (3433) rotatably arranged at the bottom of the conveying track (3432), the label roller (3431) is used for unwinding the external label roll to the conveying track (3432), and the vacuum system picks up the label on the conveying track (3432) under the linkage of the first linear module (341) and the second linear module (342) and pastes it to the defect position on the cloth.

10. The cloth inspecting machine according to claim 1, characterized in that: The cloth inspection device (3) further comprises an intelligent metering module (25) arranged between the unwinding mechanism (21) and the winding mechanism (23), the intelligent metering module (25) comprises a lifting driving assembly (251) arranged on the rack (1), a metering wheel (252) arranged at the output end of the lifting driving assembly (251) and used for abutting against the cloth, a metering device (253) coaxially connected with the metering wheel (252), and a position sensor (254) electrically cooperating with the lifting driving assembly (251); the position sensor (254) is used for detecting the position information of the end part of the cloth moved by the cloth moving mechanism (22) and triggering the lifting mechanism to drive the metering wheel (252) to move forward to abut against the cloth, and when the position sensor (254) does not detect the cloth, the lifting driving assembly (251) is triggered to drive the metering wheel (252) to move reversely to reset.

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