Automatic tension adjusting mechanism and cloth flatness detection device based on laser measurement

Abstract

The invention relates to an automatic tension adjusting mechanism and a cloth flatness detection device based on laser measurement, and belongs to the technical field of laser measurement instruments. The invention aims to solve the problem that the detection precision is interfered by detection distortion and edge curling caused by unstable cloth tension in the existing laser detection device. The automatic tension adjusting mechanism comprises a rack, a movable workbench arranged on the rack in a sliding mode, a driving assembly and a limiting assembly. The driving assembly is matched with a motor I through a lead screw and a ball nut to drive the movable workbench to slide along a guide rail I so as to change the cloth conveying distance, and tension adjustment is achieved. The arrangement mechanism drives two groups of rotating discs to rotate reversely through a driving shaft, a worm and a worm gear, so that a sliding rod slides along a guide frame and is matched with a spring to drive a smoothing rod to stretch out and draw back, and hemming arrangement is realized. The device is suitable for flatness detection of cloth of different materials in textile production, and the detection precision and efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of laser measuring instruments, and relates to an automatic tension adjusting mechanism and a cloth flatness detection device based on laser measurement. BACKGROUND

[0002] In the field of textile production, the flatness of cloth is directly related to the quality of subsequent processing and finished product quality. For example, the flatness of clothing fabric affects cutting accuracy and sewing effect, and the flatness of home textile fabric directly determines the visual appearance and use comfort of the product. Therefore, rapid and accurate detection of the flatness of cloth is a key link to ensure production quality.

[0003] At present, there are obvious limitations in cloth flatness detection methods. Traditional manual detection relies on naked eye observation, which is not only slow and labor-intensive, but also affected by subjective factors such as experience and responsibility of the detector, and the detection standard is difficult to unify, which is prone to missed judgment and misjudgment, and cannot meet the quality control needs of large-scale production. Early mechanical contact type detection equipment judges flatness by contact between probes or pressure rollers and the surface of cloth, which improves detection efficiency to some extent, but the contact process easily causes fluffing, hooking and even damage to the surface of cloth, especially for high-grade and thin fabric such as silk and lace.

[0004] In order to solve the defects of contact type detection, non-contact detection technology based on laser measurement is gradually applied to cloth flatness detection. This kind of device uses the straight line propagation and reflection characteristics of laser, emits laser beams to the surface of cloth through the emitter, and then captures the reflected signals by the receiver, so as to analyze the concave-convex changes of the surface of cloth and realize non-contact detection, which effectively avoids damage to the cloth. However, the existing laser detection device still faces many problems in actual application. For example, edge curling interferes with detection accuracy. Due to fiber characteristics, curling stress during storage or one-sided stress during conveying, some cloth is prone to edge curling phenomenon. The curled part changes the reflection path of laser, so that the detection system mistakenly judges the curling as uneven defects on the surface of cloth, resulting in deviation of detection result. However, the existing laser detection device usually does not set a special curling processing structure, and can only be corrected by post-processing algorithm, which has limited effect and increases system complexity.

[0005] Therefore, we propose an automatic tension adjusting mechanism and a cloth flatness detection device based on laser measurement to solve the above problems. SUMMARY

[0006] Therefore, the application provides an automatic tension adjusting mechanism and a cloth flatness detection device based on laser measurement to solve the above problems.

[0007] To achieve the above purpose, the application provides the following technical solutions: Automatic tension adjusting mechanism, comprising: Frame; Moving workbench, slidably arranged on the frame; Drive assembly, arranged on the frame, for driving the moving workbench to move relative to the frame to change the conveying distance of the cloth so as to adjust the tension of the cloth, the drive assembly comprising a lead screw, a ball nut and a motor I, the lead screw being rotatably arranged on the moving workbench, the ball nut being fixed on the frame and engaged with the lead screw, and the motor I being fixed on the moving workbench and having an output end connected with the lead screw; Limiting assembly, arranged on the moving workbench, for fixing the cloth, the limiting assembly comprising two air cylinders I, a compression roller, a limiting roller and a driving roller I, the driving roller I being rotatably arranged on the moving workbench, the compression roller being movably arranged between the two air cylinders I, and the limiting roller being located between the compression roller and the driving roller I; Wherein, when the air cylinders I drive the compression roller to approach the driving roller I, the limiting roller is squeezed to clamp the cloth, preventing the cloth from deviating, and at the same time the driving roller I rotates to convey the cloth.

[0008] As a further improvement of the above technical solution: The moving workbench is slidably arranged on the frame through a guide rail I and a sliding block, and a support frame is fixed on the top of the frame, and the ball nut is fixed on the support frame.

[0009] Cloth flatness detection device based on laser measurement, comprising: The automatic tension adjusting mechanism as described above; A plurality of guide rollers, each being rotatably arranged on the frame, for guiding the cloth; Detection box, fixed on the top of the frame, having a detection camera inside, for detecting the flatness by measuring the cloth surface reflection signal through laser; Arranging mechanism, arranged on the frame, for arranging the edge of the cloth, the arranging mechanism comprising two sets of smoothing rods and a transmission assembly, the transmission assembly driving the two sets of smoothing rods to rotate in opposite directions; Driving roller II, rotatably arranged on the frame, for driving the winding rod to rotate; Wherein, the cloth is conveyed to the arranging mechanism through the guide rollers, enters the detection box after the edge is smoothed by the smoothing rods for non-contact laser detection, and is wound after detection by the driving roller II.

[0010] As a further improvement of the above technical solution: The finishing mechanism further comprises two supporting seats, two connecting seats and a driving rod, the supporting seats are fixed in the frame, the connecting seats are adjustably arranged on the supporting seats, the driving rod is rotatably penetrated through the upper and lower connecting seats, two rotating discs are fixedly sleeved on the driving rod, and a plurality of the flattening rods are adjustably arranged between the two rotating discs.

[0011] A sliding rod is slidably arranged on the rotating disc, the flattening rod is fixed at one end of the sliding rod, a guide frame is fixedly arranged on the connecting seat, the guide frame is in abutment with the sliding rod, a spring is sleeved on the sliding rod, when the rotating disc rotates, the sliding rod slides along the guide frame and compresses the spring, the flattening rod is telescopic to finish the edge of the cloth.

[0012] The transmission assembly comprises a driving shaft, two worms and a worm wheel, the driving shaft is rotatably arranged in the frame and is in transmission connection with one guide roller, the driving shaft is driven by the friction force of the cloth, the two worms are fixedly sleeved on the driving shaft and are in opposite screw directions, and the worm wheel is fixedly sleeved on the bottom end of the driving rod and is in meshing with the worms.

[0013] A waist-shaped hole is formed in the top of the supporting seat, a bolt is arranged in the waist-shaped hole, and the bolt is in threaded connection with the connecting seat through the waist-shaped hole, so that the position of the connecting seat is adjusted.

[0014] Two swing frames I and two cylinders II are rotatably arranged in the moving workbench, one end of the cylinder II is rotatably connected with the bottom end of the swing frame I, the top end of the swing frame I is in abutment with the bearing at one end of the limiting roller, and the position of the limiting roller is adjusted.

[0015] Two guide rails II are fixedly arranged on the two sides of the moving workbench, the compression roller is slidably arranged in the guide rail II through a bearing, one end of the cylinder I is rotatably connected with the moving workbench, and the other end is rotatably connected with the compression roller.

[0016] Two swing frames II and two cylinders III are rotatably arranged on one side of the frame close to the driving roller II, a recess is formed in the top of one end of the swing frame II and used for limiting the winding rod, and the output end of the cylinder III is rotatably connected with the other end of the swing frame II, so that the position of the winding rod is adjusted to make the winding rod abut against the driving roller II.

[0017] The beneficial effects of the present application are as follows: 1. The automatic tension adjusting mechanism disclosed in the application can form stable clamping of the cloth from multiple directions through the cooperation of the pressure roller, the limiting roller and the driving roller I in the limiting assembly, effectively prevents the cloth from shifting left and right or moving up and down during conveying, and ensures that the cloth always moves smoothly along the set path. The automatic tension adjusting mechanism changes the conveying distance of the cloth in real time by adjusting the position of the moving workbench, so that the cloth always maintains an appropriate tension degree, neither appears loose wrinkles due to insufficient tension, nor causes stretching deformation due to excessive tension, and provides stable cloth state for subsequent processing; 2. The automatic tension adjusting mechanism and the cloth flatness detection device based on laser measurement disclosed in the application can exert a continuous and adaptive arrangement force on the edge curling of the cloth through the reverse inclined rotation of the two groups of smoothing rods in the arrangement mechanism under the driving of the transmission assembly, cooperate with the elastic adjustment of the sliding rod and the spring, smooth the edge curling, the arrangement method does not need manual participation, not only improves the processing efficiency, but also ensures the consistency of the arrangement effect of the cloth edge of different batches and different positions, avoids the interference of the edge curling on the subsequent flatness detection, and reduces the detection error; 3. The automatic tension adjusting mechanism and the cloth flatness detection device based on laser measurement disclosed in the application, the laser measurement in the detection box 3 belongs to non-contact detection, and will not directly contact the cloth surface, so that damage to the cloth can be avoided, especially suitable for processing light, sensitive or high-grade fabrics, the cooperation of the laser emitter and the detection camera can accurately capture the slight unevenness on the cloth surface, and the tension stability control and edge curling arrangement in the early stage further reduce the interference of external factors on the detection, improve the accuracy of the detection result, and at the same time, the whole process realizes automatic and coherent operation from the placement, limiting and conveying of the cloth to the arrangement, detection and winding, reduces the time cost of manual operation, improves the overall detection efficiency, and can meet the online detection demand in batch production; 4. The automatic tension adjusting mechanism and the cloth flatness detection device based on laser measurement disclosed in the application, the connecting seat can adjust the position through the waist-shaped hole and the bolt, the angles of the swing frame I and the swing frame II can be adjusted through the air cylinder II and the air cylinder III, and the extension and retraction of the smoothing rod can adapt to different cloth edge states, so that the device can process cloth of different materials, widths and thicknesses, and the application range is expanded.

[0018] Other advantages, objects and features of the present application will be apparent to those skilled in the art from the following specification, in some respects, will be apparent to those skilled in the art from the following specification, and in some respects, will be apparent to those skilled in the art from the following specification, or can be learned from the practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the objects, technical solutions and advantages of the present application clearer, the preferred embodiments of the present application will be described in detail below with reference to the drawings, in which: Figure 1 A three-dimensional structural schematic view of the fabric flatness detection device based on laser measurement of the present application; Figure 2 A three-dimensional structural schematic view of the automatic tension adjusting mechanism of the present application; Figure 3 Another three-dimensional structural schematic view of the automatic tension adjusting mechanism of the present application from another perspective; Figure 4 A structure schematic view of the arrangement mechanism installation position of the fabric flatness detection device based on laser measurement of the present application; Figure 5 A structure schematic view of the arrangement mechanism of the fabric flatness detection device based on laser measurement of the present application; Figure 6 A structure schematic view of the smoothing rod installation structure of the fabric flatness detection device based on laser measurement of the present application; Figure 7 A structure schematic view of the second swing frame installation structure of the fabric flatness detection device based on laser measurement of the present application.

[0020] The drawings show the following: 1, rack; 2, guide roller; 3, detection box; 4, moving workbench; 5, swing frame II; 6, guide rail I; 7, sliding block; 8, bearing seat; 9, support frame; 10, lead screw; 11, ball nut; 12, motor I; 13, air cylinder I; 14, compression roller; 15, limiting roller; 16, driving roller I; 17, motor II; 18, guide rail II; 19, air cylinder II; 20, swing frame I; 21, arrangement mechanism; 22, support seat; 23, waist-shaped hole; 24, bolt; 25, connecting seat; 26, smoothing rod; 27, driving rod; 28, worm wheel; 29, driving shaft; 30, worm; 31, connecting rod; 32, guide frame; 33, rotating disc; 34, sliding rod; 35, spring; 36, driving roller II; 37, motor III; 38, air cylinder III; 39, groove. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below with reference to specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the disclosure of the present specification. The present application can also be implemented or applied in different specific embodiments, and various modifications or changes can be made to the details in the present specification based on different views and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and the following examples and features in the examples can be combined with each other without conflict.

[0022] The drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the present application; in order to better illustrate the embodiments of the present application, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0023] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it is understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the positional relationship described in the drawings is only used for exemplary illustration, and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] Embodiment one As shown in Figure 2 and Figure 3 The automatic tension adjusting mechanism comprises a rack 1, which serves as the basic support of the entire device, and is made of high-strength metal material to ensure that it will not deform during operation of the equipment. The rack 1 is equipped with a moving workbench 4, which is connected to the rack 1 through guide rail I 6 and sliding block 7. The inner side of the sliding block 7 closely fits the outer side of the guide rail I 6, and lubricating grease is applied between the two to reduce the frictional resistance when sliding relative to each other, so that the moving workbench 4 can move smoothly along the length direction of the guide rail I 6, without jamming or deviation.

[0025] The driving assembly arranged on the rack 1 is used to drive the movement of the moving table 4, and the driving assembly comprises a lead screw 10, both ends of the lead screw 10 are installed on the moving table 4 through bearing seats 8, the bearing in the bearing seat 8 is in interference fit with the shaft neck of the lead screw 10, which not only ensures that the lead screw 10 can rotate flexibly, but also can be axially positioned to prevent the lead screw 10 from moving axially during rotation. The top of the rack 1 is fixed with a support frame 9 by welding, the support frame 9 is welded by a steel plate, one side of the support frame 9 is fixedly installed with a ball nut 11 through bolts, the ball nut 11 is sleeved on the lead screw 10, and the balls on the inner wall of the ball nut 11 are embedded in the spiral groove on the outer wall of the lead screw 10 to form a precise screw transmission pair. One side of the moving table 4 is fixedly installed with a motor I 12 through a motor base, the output end of the motor I 12 is fixedly connected with one end of the lead screw 10 through a shaft coupling, when the motor I 12 is connected to the power supply and started, the output shaft of the motor I 12 will drive the lead screw 10 to rotate synchronously, since the ball nut 11 is fixed on the support frame 9 and cannot move, the rotation of the lead screw 10 will be converted into the linear motion of the moving table 4 along the guide rail I 6, by changing the position of the moving table 4, the conveying distance of the cloth in the conveying path is adjusted, so that the adjustment of the tension degree of the cloth is realized. When the motor I 12 rotates forward, the moving table 4 moves away from the support frame 9, the conveying distance of the cloth increases, and the tension degree increases; when the motor I 12 reverses, the moving table 4 moves towards the support frame 9, the conveying distance of the cloth is shortened, and the tension degree is reduced.

[0026] The limiting assembly installed on the moving table 4 is used for fixing and guiding the cloth to prevent the cloth from deviating or slipping during conveying. The limiting assembly comprises two air cylinders I 13, a compression roller 14, a limiting roller 15 and a driving roller I 16, both ends of the driving roller I 16 are rotatably installed on the two side walls of the moving table 4 through bearings, the outer ring of the bearing is in interference fit with the mounting seat of the moving table 4, and the inner ring is in clearance fit with the shaft neck of the driving roller I 16, so that the driving roller I 16 can rotate flexibly. The moving table 4 is fixedly installed with a motor II 17 through bolts, the output end of the motor II 17 is transmissionally connected with one end of the driving roller I 16 through a belt pulley and a belt, when the motor II 17 is started, power is transmitted to the driving roller I 16 through the belt, and the driving roller I 16 is driven to rotate, which provides driving force for the conveying of the cloth.

[0027] Two side walls of the moving workbench 4 are provided with guide rails II 18 fixedly installed by bolts, the guide rails II 18 are long strips, and the length direction of the guide rails II 18 is perpendicular to the axis of the driving roller I 16. The two ends of the compression roller 14 are slidingly arranged in the two guide rails II 18 through bearings, the outer ring of the bearing is matched with the sliding groove gap of the guide rail II 18, so that the compression roller 14 can move up and down along the length direction of the guide rail II 18. The top end of the air cylinder I 113 is rotatably connected with the moving workbench 4 through a pin shaft, and the bottom end of the air cylinder I 113 is rotatably connected with the bearing seat at the two ends of the compression roller 14 through a pin shaft. When the piston rod of the air cylinder I 113 is extended or retracted, the compression roller 14 will be driven to move up and down along the guide rail II 18.

[0028] The limiting roller 15 is arranged between the compression roller 14 and the driving roller I 116, when the compression roller 14 approaches the driving roller I 116, the limiting roller 15 can be squeezed, so that the bearings at the two ends of the limiting roller 15 abut against one side of the moving workbench 4 and cannot move, and at the same time, the limiting roller 15 can clamp the cloth therebetween and does not affect the conveying of the cloth. Two swing frames I 120 are rotatably arranged in the moving workbench 4 through pin shafts, the swing frames I 120 are L-shaped, and the top end of the swing frame I 120 is abutted against the journal of one end of the limiting roller 15 through a bearing. Two air cylinders II 119 are also rotatably arranged in the moving workbench 4 through pin shafts, and the end of the piston rod of the air cylinder II 119 is rotatably connected with the bottom end of the swing frame I 120 through a pin shaft. When the piston rod of the air cylinder II 119 is extended or retracted, the swing frame I 120 will be swung around the connecting pin shaft of the swing frame I 120 and the moving workbench 4, and then the limiting roller 15 moves outward and is separated from the compression roller 14 and the driving roller I 116, so as to place cloth with different thickness and material.

[0029] When the cloth needs to be limited, the piston rod of the air cylinder I 113 is extended to push the compression roller 14 to move downward along the guide rail II 18 and approach the driving roller I 116, and at the same time, the limiting roller 15 is adjusted to a suitable position under the squeezing of the compression roller 14. The compression roller 14, the limiting roller 15 and the driving roller I 116 cooperate to tightly press the cloth in the middle, and when the cloth passes through the three, the cloth will not deviate or slip, so as to ensure that the cloth can be stably conveyed.

[0030] Embodiment two With reference to Figures 1-7 The cloth flatness detection device based on laser measurement comprises the automatic tension adjusting mechanism, and further comprises a plurality of guide rollers 2, the guide rollers 2 are rotatably arranged on the rack 1 through bearings, the axes of the guide rollers 2 are parallel to each other and parallel to the axis of the driving roller I 116. The surface of the guide roller 2 is polished to make the surface smooth and reduce the frictional damage to the surface of the cloth. In the conveying process of the cloth, the cloth passes through the guide rollers 2 in sequence, the guide rollers 2 play a guiding and supporting role on the cloth, so that the cloth can be stably conveyed along the preset path.

[0031] The top of the rack 1 is bolted to install a detection box 3, the detection box 3 is closed structure, its inside installation has detection camera and laser emitter, the laser emitter can emit laser beam to the cloth surface, the detection camera uses CCD industrial camera, the detection camera is used for shooting the laser image reflected by the cloth surface, the flatness of the cloth is detected by analyzing the image. The bottom of the detection box 3 is provided with an opening for the cloth to pass through, the size of the opening can meet the passing demand of different width cloth, when detecting the cloth wrinkle, the controller controls the motor II 17 to start, adjusts the position of the moving workbench 4, realizes the automatic tensioning of the cloth.

[0032] The arrangement mechanism 21 arranged on the rack 1 is used for arranging the edge of the cloth, to prevent the edge from affecting the detection result. The arrangement mechanism 21 includes two groups of smoothing rods 26 and transmission assemblies rotatably installed on one side of the rack 1, the smoothing rod 26 is made of metal material with good elasticity, and the surface is wrapped with rubber layer to avoid scratching the cloth surface.

[0033] The arrangement mechanism 21 further includes two support seats 22 fixedly installed in the rack 1, the support seat 22 is long strip shape, and two groups of waist-shaped holes 23 are formed in the top of the support seat 22, the length direction of the waist-shaped hole 23 is perpendicular to the conveying direction of the cloth. The waist-shaped hole 23 is provided with a bolt 24, the bolt 24 is screwed with the corresponding connecting seat 25 after penetrating through the waist-shaped hole 23, when the position of the connecting seat 25 needs to be adjusted, the bolt 24 is loosened, the connecting seat 25 is moved to the appropriate position along the length direction of the waist-shaped hole 23, and then the bolt 24 is tightened to fix the connecting seat 25.

[0034] The same drive rod 27 is rotatably installed between the upper and lower connecting seats 25, the shaft neck of the drive rod 27 is in clearance fit with the bearing in the connecting seat 25, to ensure that the drive rod 27 can rotate flexibly. The outer wall of the drive rod 27 is fixedly sleeved with two rotating discs 33 through keys, and the plurality of smoothing rods 26 are adjustably arranged on the side of the two rotating discs 33 close to each other.

[0035] The top of the rotating disc 33 is provided with a plurality of sliding holes, and a sliding rod 34 corresponding to the flattening rod 26 is slidably installed in the sliding hole. One end of the sliding rod 34 is fixedly connected with the flattening rod 26 by welding. The connecting seat 25 is fixedly installed with a guide frame 32 through a plurality of connecting rods 31. The guide frame 32 is arc-shaped, and the arc degree is matched with the rotating track of the rotating disc 33. The guide frame 32 is in contact with the end of the plurality of sliding rods 34. The outer wall of the sliding rod 34 is sleeved with a spring 35. The two ends of the spring 35 are in contact with the surface of the rotating disc 33 and the outer wall of the other end of the sliding rod 34 through the spring seat. When the rotating disc 33 rotates, the end of the sliding rod 34 will slide along the surface of the guide frame 32. Under the action of the guide frame 32, the sliding rod 34 will slide along the sliding hole on the rotating disc 33. At the same time, the spring 35 will be deformed, driving the flattening rod 26 to stretch and swing. When the sliding rod 34 contacts the guide frame 32, it will move towards the cloth, so that the upper and lower corresponding flattening rods 26 are in contact with the upper and lower surfaces of the cloth. At this time, the flattening rod 26 can flatten the edge of the cloth in the process of rotating and moving. The cloth after flattening has no edge when passing through the guide roller 2. When the sliding rod 34 is away from the guide frame 32, the flattening rod 26 is away from the cloth at this time, and the sliding rod 34 can be reset and moved under the action of the spring 35, so that the upper and lower corresponding flattening rods 26 are away from each other, and the cloth edge is continuously flattened in turn.

[0036] The transmission assembly includes a drive shaft 29 rotatably installed in the rack 1 through a bearing. One end of the drive shaft 29 is in transmission connection with the shaft neck of one of the guide rollers 2 through a gear. When the cloth is conveyed on the guide roller 2, the friction between the cloth and the guide roller 2 will drive the guide roller 2 to rotate, and then drive the drive shaft 29 to rotate through the gear transmission. The outer wall of the drive shaft 29 is fixedly sleeved with two worms 30 through a key, and the screw directions of the two worms 30 are opposite. The bottom end of the drive rod 27 is fixedly sleeved with a worm wheel 28 engaged with the worm 30 through a key. When the drive shaft 29 rotates, the worm 30 will drive the worm wheel 28 to rotate. Since the screw directions of the two worms 30 are opposite, the two worm wheels 28 will rotate in opposite directions, and then the two drive rods 27 will rotate in opposite directions, driving the two groups of flattening rods 26 to rotate in opposite directions, and arranging the edge from both sides of the cloth.

[0037] The rack 1 is rotatably installed with a driving roller II 36 through a bearing. The axis of the driving roller II 36 is parallel to the axis of the guide roller 2. One side of the rack 1 is fixedly installed with a motor III 37 through a bolt. The output end of the motor III 37 is in transmission connection with one end of the driving roller II 36 through a gear. When the motor III 37 is started, it will drive the driving roller II 36 to rotate.

[0038] The two swing frames II 5 are installed on one side of the rack 1 close to the driving roller II 36 through pin shaft rotation, and the swing frame II 5 is long strip-shaped, and a groove 39 for limiting the winding rod is formed at the top of one end of the swing frame II 5, the shape of the groove 39 is matched with the shape of the winding rod, and the winding rod can be effectively limited. Two air cylinders III 38 are installed in the rack 1 through pin shaft rotation, and the piston rod end of the air cylinder III 38 is rotationally connected with the other end of the swing frame II 5 through a pin shaft, when the piston rod of the air cylinder III 38 is retracted, the swing frame II 5 will swing around the connecting pin shaft of the swing frame II 5 and the rack 1, the height and angle of the groove 39 are adjusted, so that the winding rod can be stably placed in the groove 39, and the surface of the winding rod is in close contact with the surface of the driving roller II 36. When the driving roller II 36 rotates, the friction between the surface of the driving roller II 36 and the winding rod will drive the winding rod to rotate, and the detected cloth is wound.

[0039] Working principle: install the cloth roll in the unwinding position of the rack 1, and the free end of the cloth passes through a plurality of guide rollers 2 in sequence. The guide roller 2 supports the cloth by rotating, and changes the conveying direction of the cloth by using the cylindrical surface to guide the cloth, so that the cloth enters the subsequent processing link according to the preset path. The cloth first passes through the limiting assembly of the automatic tension adjusting mechanism, at this time the driving roller I 116 is in a static state, the piston rod of the air cylinder I 113 is in a retracted state, the press roller 14 is located at the upper position of the guide rail II 118, and a large gap is maintained between the driving roller I 116, which is convenient for the cloth to pass through. The operator places one end of the cloth between the press roller 14 and the driving roller I 116, and then places the limiting roller 15, and then starts the air cylinder I 113, and the piston rod of the air cylinder I 113 is extended to push the press roller 14 to move downward along the guide rail II 118 and gradually approach the driving roller I 116. The limiting roller 15 is in contact with the surface of the cloth. Finally, the press roller 14, the limiting roller 15 and the driving roller I 116 cooperate to clamp the cloth from top to bottom, and the limiting of the cloth is completed, which prevents the cloth from shifting left and right or jumping up and down during conveying.

[0040] After the limiting is completed, the motor II 17 is started, and the power of the motor II 17 is transmitted to the driving roller I 16 through the belt to drive the driving roller I 16 to rotate. The friction between the driving roller I 16 and the cloth drives the cloth to be conveyed forward, and the cloth continues to advance under the driving of the driving roller I 16 and passes through the arrangement mechanism 21. At this time, the cloth contacts the guide roller 2, and the friction between the two drives the guide roller 2 to rotate as the cloth is conveyed. The guide roller 2 drives the driving shaft 29 to rotate through gear transmission, and the two worms 30 on the driving shaft 29 rotate accordingly. Since the two worms 30 have opposite screw directions and are engaged with the corresponding worm gears 28, the two driving rods 27 are driven to rotate in opposite directions, and the rotating discs 33 on the driving rods 27 rotate in opposite directions synchronously. When the rotating disc 33 rotates, the end of the sliding rod 34 slides along the arc surface of the guide frame 32. Under the action of the guide frame 32, the sliding rod 34 reciprocates along the sliding hole on the rotating disc 33, and the spring 35 is compressed or stretched to generate elastic force. The movement of the sliding rod 34 drives the flattening rods 26 to stretch and swing, and the two groups of flattening rods 26 comb the edge from both sides of the cloth to flatten the edge outward, so that the edge of the cloth remains flat.

[0041] The arranged cloth continues to be conveyed and enters the opening at the bottom of the detection box body 3. The laser emitter in the detection box body 3 emits a laser beam to the surface of the cloth. After the laser beam is reflected on the surface of the cloth, the detection camera captures the reflected laser signal. Since the surface of the cloth has wrinkles, protrusions or depressions, etc. Uneven conditions, the reflection angle and intensity of the laser will change, and the detection camera will record these changed signals to complete the detection of the flatness of the cloth.

[0042] The detected cloth continues to be conveyed forward and finally reaches the winding area. The winding rod is placed in the groove 39 of the swing frame II 5, and the air cylinder III 38 is started, and the piston rod thereof is extended and retracted to drive the swing frame II 5 to swing, thereby adjusting the position of the winding rod to make the winding rod tightly contact with the surface of the driving roller II 36. The motor III 37 is started, and the motor III 37 drives the driving roller II 36 to rotate through gear transmission. The friction between the driving roller II 36 and the winding rod drives the winding rod to rotate synchronously, and the detected cloth is neatly wound on the winding rod to complete the winding process.

[0043] In the whole process, the automatic tension adjusting mechanism works in real time. If the detection camera detects that the fabric tension is too small, the information is fed back to the controller, the controller controls the motor 112 to start and drive the screw rod 10 to rotate, the screw rod 10 cooperates with the ball nut 11 to make the moving workbench 4 move along the guide rail 6 away from the support frame 9, increase the fabric conveying distance, and thus increase the tension; if the fabric tension is too large, the motor 112 rotates in the opposite direction, the moving workbench 4 moves towards the support frame 9, shortens the fabric conveying distance, and reduces the tension, so that the fabric can complete each link processing in a suitable tension state, and after tensioning, the detection is performed again, if the flatness is unqualified, the information is fed back to the background and recorded.

[0044] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should be covered in the scope of the claims of the present application.

Claims

1. Automatic tension adjustment mechanism, characterized in that: include: Rack (1); A movable workbench (4) slidably arranged on the frame (1); A drive assembly is provided on the frame (1) and is used to drive the movable workbench (4) to move relative to the frame (1) to change the conveying distance of the fabric, thereby adjusting the tension of the fabric, the drive assembly comprising a lead screw (10), a ball nut (11) and a motor I (12), the lead screw (10) being rotatably provided on the movable workbench (4), the ball nut (11) being fixed on the frame (1) and meshing with the lead screw (10), the motor I (12) being fixed on the movable workbench (4) and having an output end connected to the lead screw (10); A limiting assembly is arranged on the movable workbench (4) and is used to fix the cloth. The limiting assembly includes two cylinders I (13), a pressure roller (14), a limiting roller (15) and an active roller I (16). The active roller I (16) is rotatably arranged on the movable workbench (4). The pressure roller (14) is movably arranged between the two cylinders I (13). The limiting roller (15) is located between the pressure roller (14) and the active roller I (16). When the cylinder I (13) drives the pressing roller (14) to approach the active roller I (16), the limiting roller (15) is squeezed to clamp the cloth to prevent the cloth from deflecting, and at the same time, the active roller I (16) rotates to transport the cloth.

2. The automatic tension adjustment mechanism according to claim 1, characterized in that: The movable workbench (4) is slidably arranged on the frame (1) via a guide rail I (6) and a sliding block (7); a support frame (9) is fixedly provided on the top of the frame (1); and the ball nut (11) is fixed on the support frame (9).

3. A fabric flatness detection device based on laser measurement, characterized in that: include: The automatic tension adjustment mechanism according to claim 1 or 2; A plurality of guide rollers (2) are rotatably arranged on the frame (1) and are used to guide the cloth; A detection box (3) is fixed on the top of the frame (1), and is provided with a detection camera inside, which is used to measure the reflected signal of the cloth surface by laser to detect the flatness; A finishing mechanism (21) is provided on the frame (1) and is used for finishing the curling of the edge of the cloth. The finishing mechanism (21) comprises two groups of smoothing rods (26) and a transmission assembly. The transmission assembly drives the two groups of smoothing rods (26) to rotate in opposite directions. an active roller II (36), rotatably mounted on the frame (1) and configured to drive the winding rod to rotate; The cloth is conveyed to the finishing mechanism (21) via the guide roller (2), and the cloth enters the detection box (3) for non-contact laser detection after the smoothing rod (26) smoothes the curled edge. After the detection, the cloth is driven by the active roller II (36) to be reeled.

4. The cloth flatness detection device based on laser measurement according to claim 3, characterized in that: The tidying mechanism (21) further comprises two supporting seats (22), two connecting seats (25) and a driving rod (27), wherein the supporting seats (22) are fixed in the frame (1), the connecting seats (25) are adjustably arranged on the supporting seats (22), the driving rod (27) rotatably passes through the upper and lower connecting seats (25), two rotating disks (33) are fixedly sleeved on the driving rod (27), and a plurality of smoothing rods (26) are adjustably arranged between the two rotating disks (33).

5. The cloth flatness detection device based on laser measurement according to claim 4, characterized in that: A sliding rod (34) is slidably provided on the rotating disk (33), the smoothing rod (26) is fixed to one end of the sliding rod (34), a guide frame (32) is fixed on the connecting seat (25), the guide frame (32) is in contact with the sliding rod (34), and a spring (35) is sleeved on the sliding rod (34). When the rotating disk (33) rotates, the sliding rod (34) slides along the guide frame (32) and compresses the spring (35), so that the smoothing rod (26) is extended and retracted to tidy up the edge of the cloth.

6. The cloth flatness detection device based on laser measurement according to claim 4 or 5, characterized in that: The transmission assembly includes a drive shaft (29), two worms (30) and a worm wheel (28). The drive shaft (29) is rotatably arranged in the frame (1) and is in transmission connection with a guide roller (2). It is driven by the friction force of the cloth. The two worms (30) are fixedly sleeved on the drive shaft (29) and have opposite spiral directions. The worm wheel (28) is fixedly sleeved on the bottom end of the drive rod (27) and meshes with the worm (30).

7. The cloth flatness detection device based on laser measurement according to claim 4, characterized in that: A waist-shaped hole (23) is provided on the top of the support seat (22), a bolt (24) is provided in the waist-shaped hole (23), and the bolt (24) passes through the waist-shaped hole (23) and is threadedly connected to the connecting seat (25) to adjust the position of the connecting seat (25).

8. The cloth flatness detection device based on laser measurement according to claim 3, characterized in that: Two swing frames I (20) and two cylinders II (19) are rotatably provided in the movable workbench (4), one end of the cylinder II (19) is rotatably connected to the bottom end of the swing frame I (20), and the top end of the swing frame I (20) is in contact with the bearing at one end of the limiting roller (15) for adjusting the position of the limiting roller (15).

9. The cloth flatness detection device based on laser measurement according to claim 3, characterized in that: Guide rails II (18) are fixedly provided on both sides of the movable workbench (4), and the pressing roller (14) is slidably arranged in the guide rails II (18) through bearings. The top end of the cylinder I (13) is rotatably connected to the movable workbench (4), and the bottom end is rotatably connected to the pressing roller (14).

10. The cloth flatness detection device based on laser measurement according to claim 3, characterized in that: The frame (1) is rotatably provided with two swing frames II (5) and two cylinders III (38) on one side close to the active roller II (36). A groove (39) is provided on the top of one end of the swing frame II (5) for limiting the position of the winding rod. The output end of the cylinder III (38) is rotatably connected to the other end of the swing frame II (5) for adjusting the position of the winding rod so that the winding rod contacts the active roller II (36).

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