A double deviation rectifying mechanism for conveying textile fabric

Abstract

The application relates to the technical field of textiles, in particular to a double deviation rectifying mechanism for conveying textile fabric, which comprises a mounting connecting plate, the mounting connecting plate is used for mounting with an external textile machine body, one side of the mounting connecting plate is provided with a positioning frame, the side, away from the mounting connecting plate, of the positioning frame is provided with a bearing frame, the bearing frame is provided with a textile fabric body, and the middle portions of the two positioning frames are provided with positioning plates; a pretreatment assembly is arranged in the middle portions of the two positioning plates; a double deviation rectifying assembly is arranged on the other side of the positioning plate, and the double deviation rectifying assembly is used for rectifying the position when conveying the textile fabric body. Compared with the prior art, the pretreatment assembly is arranged, the fabric treatment precision and efficiency are improved, a series of coordinated mechanical actions can effectively stabilize the fabric position, release the tension and pre-crease, and provide basic conditions for subsequent high-precision deviation rectification.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textiles, and in particular to a double deviation rectification mechanism for textile fabric conveying. BACKGROUND

[0002] In the production process of the textile industry, the fabric usually needs to move steadily along the established path during conveying, setting, printing, coating and other processes. However, due to the softness and easy deformation of the fabric itself, combined with the influence of factors such as uneven tension, roller deviation, material slipping and the like during conveying, the fabric is prone to deviation. Once the fabric deviates, it will not only affect the continuity and stability of the process, but also may cause quality problems such as inaccurate printing position, coating deviation, edge damage, and thus cause material waste and economic loss. In recent years, a double deviation rectification mechanism has been gradually introduced into the fabric conveying system. The structure usually sets swingable guiding devices or adjusting mechanisms on both sides of the conveying path, taking the middle as a fixed reference, and the left and right sides swing cooperatively, so as to quickly and accurately correct the position of the fabric in real time. Compared with the traditional single-side deviation rectification method, the double deviation rectification structure has the advantages of more sensitive response, more balanced control, higher deviation rectification accuracy, lower energy consumption and the like, and is particularly suitable for wide fabric, high-speed conveying and processing scenes with strict positioning requirements.

[0003] In the traditional fabric deviation rectification mechanism, the fabric is usually subjected to continuous unidirectional traction during conveying. Especially when dealing with high-elasticity fabrics (such as spandex blended fabrics, elastic knitted fabrics, etc.), the unidirectional traction often cannot effectively release the tension of the fabric, resulting in irreversible plastic deformation of the molecular chain structure of the fabric. Specifically, during the long-time traction process, the molecular chain slip rate of the fabric, especially the high-elasticity fiber, exceeds 8% under the action of stress, thereby appearing a creep relaxation effect. In addition, the crimp structure of the elastic fiber cannot be completely restored during forced stretching, resulting in a residual strain ≥12%. Such deformation not only affects the elastic recovery ability of the fabric, but also may cause wrinkles, relaxation or other quality problems in the subsequent processing of the fabric.

[0004] The traditional deviation rectification mechanism usually relies on mechanical contact or simple tension control to correct the deviation of the fabric. However, these devices lack effective periodic tension release mechanisms and dynamic adjustment capabilities, especially they cannot cope with small deviations during high-speed operation. For high-elasticity fabrics, the continuous action of unidirectional traction not only cannot effectively release the tension, but also may cause the fabric to be subjected to stress in a single direction, causing local stress concentration and aggravating the deformation problem of the fabric.

[0005] Therefore, the present application discloses a double deviation rectification mechanism for textile fabric conveying. SUMMARY

[0006] In view of this, the purpose of this invention is to propose a dual-correction mechanism for conveying textile fabrics, so as to solve the problem that traditional fabric correction mechanisms, when handling highly elastic fabrics, are prone to stress concentration and irreversible deformation caused by continuous unidirectional traction force due to the lack of periodic tension release and dynamic adjustment capabilities, which affects the quality of the fabric.

[0007] To achieve the above objectives, the present invention provides a dual-correction mechanism for conveying textile fabric, comprising a mounting connecting plate for mounting to an external textile machine body, a positioning frame provided on one side of the mounting connecting plate, a bearing frame provided on the side of the positioning frame away from the mounting connecting plate, a textile fabric body provided on the bearing frame, and positioning plates provided at both ends of the middle portion of the positioning frame.

[0008] A pretreatment component is disposed in the middle of the two positioning plates, and the pretreatment component is used to perform pre-conveying treatment on the textile fabric body;

[0009] A dual-correction assembly is disposed on the other side of the positioning plate. The dual-correction assembly is used to correct the position when conveying the textile fabric body. The dual-correction assembly includes a sensing module and a correction module. The sensing module is used to sense whether the textile fabric body is misaligned. The correction module is used to correct the misalignment of the textile fabric body after the sensing module senses it.

[0010] The control system includes a signal receiving unit, a judgment unit, and an execution unit. The signal receiving unit receives the offset detection signal from the sensing module. The judgment unit determines the offset state of the textile fabric body based on the offset detection signal. The execution unit controls the correction module to adjust the position of the textile fabric body.

[0011] Preferably, the pretreatment component includes a tension conveying roller that is rotatably mounted in the middle of the two positioning plates. The tension conveying roller can be driven by an added motor or pulled by the movement of the textile fabric body. Mounting plates are provided on both sides of the positioning frame. A vertical plate is provided on one side of the top of the mounting plate. Two sliding sleeves are provided in the middle of the top of the mounting plate. A sliding rod is slidably mounted on both sliding sleeves. A pre-tightening rod is provided on one side of both sliding rods. The pre-tightening rod can contact one side of the textile fabric body during the outward pushing process. A vertical push rod is slidably mounted on the vertical plate. A pushing rod is provided at the top of the two vertical push rods. The pushing rod drives the textile fabric body to swing up and down during the reciprocating pushing and retraction process.

[0012] Preferably, a driving plate is arranged on the sliding rod, an arc-shaped driving slot is arranged in the middle of the driving plate, the vertical top rod is arranged in a T shape, the middle of the vertical top rod is slidably arranged on the arc-shaped driving slot, the other side of the mounting plate is provided with a positioning seat, a rotating rod is rotatably arranged on the positioning seat, the tensioning conveying roller is coaxially rotatable with the rotating rod, the other side of the rotating rod is provided with a connecting rod, and the other side of the connecting rod is rotatably connected with the bottom of one side of the arc-shaped driving slot.

[0013] Preferably, when the tensioning conveying roller rotates, the rotating rod and the connecting rod rotate together, drive the driving plate and the sliding rod to reciprocatingly horizontally move, and in the process of reciprocating horizontal movement of the sliding rod and the driving plate, the vertical top rod reciprocatingly vertically moves, and the reciprocating horizontal movement of the sliding rod and the reciprocating vertical movement of the vertical top rod are staggered.

[0014] Preferably, the top rod and one side of the pre-tightening pressing rod are both arranged in a semicircular arc shape.

[0015] Preferably, the tensioning conveying roller is provided with two sections of air floating holes on both sides, the air floating holes are micro air injection holes arranged in an inclined manner, the diameter ranges from 0.2mm to 0.5mm, the two sections of air floating holes are arranged in an opposite inclined manner, the inclination angle ranges from 20° to 45°, the two sections of air floating holes can be respectively connected with an external stable gas source with a pressure of 0.3MPa to 0.5MPa, the opening and closing ratio of the gas sources in different areas can be adjusted, a transverse air pressure difference is formed on the surface of the tensioning conveying roller, the non-contact transverse pushing of the textile fabric body is realized, and the initial centering is performed for different fabric widths.

[0016] Preferably, the sensing module comprises a deviation rectifying frame fixedly arranged on one side of the two positioning plates, the bottom of the deviation rectifying frame is provided with an extension frame on both sides, one side of the extension frame is provided with a distance sensor, one side of the top of the mounting connecting plate is provided with a fixing rod, one side of the fixing rod is provided with an ultrasonic detector, the ultrasonic detector is in a U shape, the textile fabric body passes between the two distance sensors and the middle of the U-shaped ultrasonic detector.

[0017] Preferably, the correction module comprises a rotating column rotatably arranged in the middle of the bottom of the deviation rectifying frame, the top of the rotating column is provided with a deflection frame, the deflection frame is provided with a deviation rectifying roller, one side of the deviation rectifying frame is provided with a gas cylinder, one side of the deflection frame is rotatably connected with the telescopic end of the gas cylinder, in the telescopic process of the gas cylinder, the deflection frame and the deviation rectifying roller deflect on the rotating column, the deviation rectifying roller performs double deviation rectifying operation in a state of swinging on both sides, and the bottom of the deflection frame is further provided with a positioning wheel on both sides.

[0018] Preferably, the two sides of the deviation rectifying roller are staggered with a plurality of piezoelectric ceramic accelerators, which are sheet or block type bidirectional piezoelectric drivers, and the driving displacement range is ±2mm, which is used to compensate the edge jumping caused by high frequency disturbance.

[0019] Preferably, the control system further comprises a cloth type identification module, which obtains the kind information of the current cloth based on image recognition or RFID mode, and automatically adjusts the air pressure of the air floating hole, the response sensitivity of the deviation rectifying roller and the driving parameters of the piezoelectric ceramic accelerator according to the identification result.

[0020] The beneficial effects of the present application are:

[0021] 1. The double deviation rectifying mechanism for textile fabric conveying, by setting the pretreatment assembly, the linkage mechanism of the tensioning conveying roller and the rotating rod, driving the reciprocating sliding of the sliding rod and the driving plate, and then realizing the periodic ejection and recovery of the vertical top rod and the jacking rod, ensuring the up and down lifting and placement of the cloth, at the same time, the horizontal movement of the sliding rod pushes the pre-tightening pressure rod into contact with the cloth side edge, providing stable lateral support, preventing the cloth from slipping or wrinkling, especially the staggered action of the jacking rod and the pre-tightening pressure rod, avoiding the cloth being stressed in up and down and left and right directions at the same time, reducing stress concentration, avoiding the deformation and stretching of light and thin or high elasticity cloth, the cloth is only subjected to the main force in one direction, and the other direction remains following or buffering, forming a dynamic balanced conditioning process, so that the cloth maintains natural and smooth movement in the high-speed running process, improving the cloth processing precision and efficiency, through a series of coordinated mechanical actions, the cloth position can be effectively stabilized, the tension can be released and the wrinkles can be pre-eliminated, providing basic conditions for subsequent high-precision deviation rectification;

[0022] 2. The double deviation rectifying mechanism for textile fabric conveying, by setting two sections of air floating holes on the tensioning conveying roller, generating non-contact transverse airflow through the micro jet holes, realizing the flexible displacement and preliminary deviation rectification and adjustment of the textile fabric, the inclined arrangement of the air floating holes and the adjustable airflow intensity make the cloth form a gas film suspension support above the roller surface, avoiding direct contact with the roller surface, reducing friction and damage, by adjusting the opening and closing proportion of the left and right air floating holes, generating a transverse air pressure difference, which can automatically translate the cloth according to the initial position offset of the cloth, accurately adjusting the cloth position, achieving non-contact, continuous and automatic deviation rectification effect;

[0023] 3. The double deviation rectification mechanism for textile fabric conveying, through the double deviation rectification assembly, the distance sensor and the ultrasonic detector in the sensing module monitor the deviation of the fabric in real time, after the judgment of the control system, the deviation rectification instruction is sent in time, the deviation rectification module drives the deflection frame to rotate through the air cylinder, drives the deviation rectification roller to fine-tune the fabric position, and makes the fabric keep near the set center line. Meanwhile, the piezoelectric ceramics accelerator arranged staggered compensates the high-frequency jumping of the fabric edge in sub-millimeter level, ensures that accurate and stable deviation rectification can be realized even in the high-speed transmission process. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present application or prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only a part of the present application, and other drawings can also be obtained by those skilled in the art without creative effort.

[0025] Figure 1 It is a first perspective view of the structure of the present application.

[0026] Figure 2 It is a second perspective view of the structure of the present application.

[0027] Figure 3 It is a plane structure diagram of the double deviation rectification assembly of the present application.

[0028] Figure 4 It is a three-dimensional structure diagram of the double deviation rectification assembly of the present application.

[0029] Figure 5 It is a running schematic diagram of the double deviation rectification assembly of the present application.

[0030] Figure 6 It is a schematic diagram of the pretreatment assembly and the textile fabric body structure of the present application.

[0031] Figure 7 It is a plane structure diagram of the pretreatment assembly of the present application.

[0032] Figure 8 It is a three-dimensional structure diagram of the pretreatment assembly of the present application.

[0033] Figure 9 It is a local enlarged structure diagram of the pretreatment assembly of the present application.

[0034] Figure 10 It is a schematic diagram of the tensioning conveying roller and the air floating hole structure of the present application.

[0035] Figure 11 It is a staggered running schematic diagram of the pretreatment assembly of the present application.

[0036] The marks in the figure are:

[0037] 1, mounting connecting plate; 2, positioning frame; 3, bearing frame; 4, textile fabric body; 5, positioning plate; 6, tensioning conveying roller; 7, deviation rectifying frame; 8, deviation rectifying roller; 9, fixing rod; 10, ultrasonic detector; 11, deflection frame; 12, rotating column; 13, air cylinder; 14, positioning wheel; 15, extension frame; 16, distance sensor; 17, piezoelectric ceramic accelerator; 18, mounting plate; 19, vertical plate; 20, sliding sleeve; 21, sliding rod; 22, driving plate; 23, arc-shaped driving groove; 24, vertical ejector rod; 25, positioning seat; 26, rotating rod; 27, connecting rod; 28, air floating hole; 29, ejector rod; 30, pre-tightening pressing rod. DETAILED DESCRIPTION

[0038] To make the objects, technical solutions and advantages of the present application clearer, further detailed description will be given to the present application in combination with specific embodiments.

[0039] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the common meanings understood by those skilled in the art to which the present application belongs. The terms "first", "second" and similar terms used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "including", "containing" and similar terms mean that the components or objects appearing before the terms cover the components or objects listed after the terms and their equivalents, without excluding other components or objects. The terms "connected" or "linked" and similar terms do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like only represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0040] As Figures 1 to 11The double deviation rectification mechanism for conveying textile fabric shown includes a mounting connecting plate 1 for mounting with an external textile machine body, a positioning frame 2 provided on one side of the mounting connecting plate 1, a bearing frame 3 provided on the side of the positioning frame 2 away from the mounting connecting plate 1, a textile fabric body 4 provided on the bearing frame 3, and a positioning plate 5 provided at the middle of each of the two positioning frames 2; a pretreatment assembly provided at the middle of the two positioning plates 5 for pretreating the textile fabric body 4 before conveying; a double deviation rectification assembly provided on the other side of the positioning plate 5 for rectifying the position of the textile fabric body 4 during conveying, which includes a sensing module for sensing whether the textile fabric body 4 is deviated and a rectification module for rectifying the textile fabric body 4 after the sensing module senses that the textile fabric body 4 is deviated; and a control system including a signal receiving unit, a judging unit and an executing unit, the signal receiving unit is used for receiving the deviation detection signal of the sensing module, the judging unit is used for judging the deviation state of the textile fabric body 4 according to the deviation detection signal, and the executing unit is used for controlling the rectification module to adjust the position of the textile fabric body 4.

[0041] The coiled textile fabric body 4 is placed on the bearing frame 3, and then the textile fabric body 4 is subjected to tensioning or flattening treatment by the pretreatment assembly provided between the two positioning plates 5 before conveying, and then the fabric enters the double deviation rectification assembly area, at which time the sensing module detects the fabric edge in real time and transmits the detected deviation signal to the signal receiving unit of the control system, the judging unit analyzes whether the fabric is deviated and the deviation direction, amplitude and other information according to the received signal, if deviation is detected, the executing unit of the control system immediately controls the rectification module to start, drives the deviation rectification mechanism to adjust or guide the fabric horizontally, so that the fabric returns to the normal path, in this closed loop process, the fabric realizes automatic deviation rectification and stable conveying, the whole process relies on the cooperation of structural positioning and electronic control to realize continuous, stable and high-precision conveying of the fabric, and through the tensioning, flattening and preliminary positioning operations before the fabric formally enters the deviation rectification area, the problems of wrinkling, skewing and uneven tension caused by fabric winding or storage can be effectively eliminated, stable input is provided for subsequent deviation rectification, and the response accuracy and consistency of the deviation rectification system are improved.

[0042] As Figure 1 , Figure 2 , Figures 6 to 11As shown, the pretreatment assembly comprises a tensioning conveying roller 6 rotatably mounted in the middle of the two positioning plates 5, which can be driven by an additional motor or pulled to rotate by the movement of the textile fabric body 4. The two sides of the positioning frame 2 are provided with mounting plates 18, the top side of each mounting plate 18 is provided with a vertical plate 19, the top middle of each mounting plate 18 is provided with two sliding sleeves 20, and the two sliding sleeves 20 are jointly and slidably provided with sliding rods 21, one side of the two sliding rods 21 is jointly provided with a pre-tightening pressing rod 30, which can contact one side of the textile fabric body 4 during outward extrusion, the vertical plate 19 is vertically and slidably provided with vertical jacks 24, the top of the two vertical jacks 24 is jointly provided with a jacking rod 29, which drives the textile fabric body 4 to swing up and down during reciprocating extrusion and retraction, the sliding rod 21 is provided with a driving plate 22, the middle of the driving plate 22 is provided with an arc-shaped driving groove 23, the vertical jack 24 is T-shaped, and the middle of the vertical jack 24 is slidably installed in the arc-shaped driving groove 23, the other side of the mounting plate 18 is provided with a positioning seat 25, the positioning seat 25 is rotatably provided with a rotating rod 26, the tensioning conveying roller 6 is coaxially rotatable with the rotating rod 26, the other side of the rotating rod 26 is provided with a connecting rod 27, the other side of the connecting rod 27 is rotatably connected with the bottom of one side of the arc-shaped driving groove 23, when the tensioning conveying roller 6 rotates, the rotating rod 26 and the connecting rod 27 rotate, drive the driving plate 22 and the sliding rod 21 to reciprocally move horizontally, and during the horizontal reciprocating movement of the sliding rod 21 and the driving plate 22, the vertical jack 24 moves vertically reciprocally, and the horizontal reciprocating movement of the sliding rod 21 and the vertical reciprocating movement of the vertical jack 24 are staggered, and one side of the jacking rod 29 and the pre-tightening pressing rod 30 is provided with a semicircular arc;

[0043] The textile fabric body 4 is first guided into the pretreatment assembly area by the positioning frame 2 before entering the deviation correction. When the fabric passes through the tensioning conveying roller 6, the roller can rotate by the movement of the fabric itself or by motor driving, and at the same time, the rotating rod 26 coaxially connected with the roller is rotated, and then the connecting rod 27 is rotated. The rotation of the connecting rod 27 is connected with the middle arc-shaped driving slot 23 of the driving plate 22 at the bottom end, so that the driving plate 22 and the sliding rod 21 reciprocate in the horizontal direction. This horizontal movement simultaneously acts on the T-shaped vertical top rod 24, so that the T-shaped vertical top rod 24 reciprocates in the vertical direction in the driving slot, thereby periodically driving the top rod 29 to be lifted out and then retracted, realizing the continuous lifting and placement of the fabric. At the same time, the sliding rod 21 pushes the pre-tightening compression rod 30 outward during horizontal movement, and the pre-tightening compression rod 30 is in contact with the fabric side edge after being lifted out to form a stable compression joint, providing lateral support while the fabric is swinging up and down, preventing the fabric edge from slipping or wrinkling. Since the top rod 29 and the pre-tightening compression rod 30 are designed with a semicircular surface, they can realize flexible contact when contacting the fabric, without causing damage to the fabric surface. Through a series of coordinated linkage and swinging actions, the pretreatment assembly can effectively stabilize the fabric position, release tension, and pre-crease, providing an ideal working condition basis for the subsequent high-precision deviation correction process.

[0044] Moreover, when the top rod 29 lifts the fabric upward, if the pre-tightening compression rod 30 is also pushed outward at the same time, it will cause the fabric to be stressed in the up-down and left-right directions at the same time, which is easy to form stress concentration, especially for light and thin or high-elasticity fabrics, which is easy to cause deformation, stretching or wrinkling. By using the staggered strategy, the pre-tightening compression rod 30 is retracted when the lifting action occurs, so that the fabric remains in a "free state" in the vertical direction, which can avoid stress interference and ensure smooth movement of the fabric. During the descending process of the top rod 29, the pre-tightening compression rod 30 starts to push out at this time, and forms a flexible contact with the fabric edge, gently pushing the lateral tension of the fabric, so that the fabric tension quickly returns to a balanced state. At the same time, it also has a light "expansion" effect, which can assist the fabric edge to expand, reduce the problems of edge rolling, wave forming, etc. The periodic action of the top rod 29 and the pre-tightening compression rod 30 constitutes a dynamic balance cycle in essence, and in each cycle, the fabric is only stressed in one direction, and the other direction remains in a following or buffering state, thereby forming a highly coordinated and soft fabric dynamic conditioning process, which is especially suitable for high-speed running environment.

[0045] Two sections of air floating holes 28 are arranged on both sides of the tensioning conveying roller 6. The air floating holes 28 are micro-sized air injection holes arranged in an inclined manner, with a diameter range of 0.2mm-0.5mm. The two sections of air floating holes 28 are respectively arranged in left and right opposite inclined manners, with an inclination angle of 20°-45°. The two sections of air floating holes 28 can be respectively connected with external stable gas sources with a pressure of 0.3-0.5MPa, and the opening and closing proportion of the gas sources in each area can be adjusted, so as to form a horizontal pressure difference on the surface of the tensioning conveying roller 6, realize non-contact horizontal pushing of the textile fabric body 4, and initially center the fabric of different widths.

[0046] In the process of the textile fabric body 4 passing through the tensioning conveying roller 6, the inclined micro air floating holes 28 arranged at the bottom of both sides start to work, and the external stable air source (for example, an air compressor or a blowing system provided with a pressure stabilizing device, which is a prior art and not described in detail in the drawings and the text) connected thereto continuously sprays the inclined air flow at a pressure of 0.3-0.5 MPa through the air injection holes with a diameter of 0.2-0.5 mm, and the air injection direction is inclined upward at an angle of 20°-45°, and a layer of air film is formed at the bottom of the fabric, so that the fabric is realized to be suspended and supported above the roller surface to avoid direct contact; at this time, the control system selectively adjusts the opening and closing proportion of the air floating holes 28 in the left and right areas according to the initial position deviation of the fabric edge, so as to make the left and right air flow difference, form the lateral force difference of the fabric, and thus drive the fabric to slowly translate to one side, realize the non-contact, flexible and continuous preliminary deviation correction and adjustment; since the air injection angle and air pressure can be adjusted, the system can adjust the air injection strength according to different fabric weight, thickness or width, and realize the compatible adaptation to various fabric types.

[0047] As shown in Figures 1 to 5 The sensing module includes a deviation correction frame 7 fixedly installed on one side of the two positioning plates 5, and the bottom of the deviation correction frame 7 is provided with an extension frame 15 on both sides, and one side of the extension frame 15 is provided with a distance sensor 16, and one side of the top of the installation connecting plate 1 is provided with a fixed rod 9, and one side of the fixed rod 9 is provided with an ultrasonic detector 10 in a U shape, and the textile fabric body 4 passes between the two distance sensors 16 and the middle part of the U-shaped ultrasonic detector 10, and the correction module includes a rotating column 12 rotatably installed at the middle part of the bottom of the deviation correction frame 7, and the top of the rotating column 12 is provided with a deflection frame 11, and the deflection frame 11 is provided with a deviation correction roller 8, and one side of the deviation correction frame 7 is provided with an air cylinder 13, and the telescopic end of the air cylinder 13 is rotatably connected with one side of the deflection frame 11, and in the process of the air cylinder 13 being telescopically extended, the deflection frame 11 and the deviation correction roller 8 are deflected on the rotating column 12, and the deviation correction roller 8 is operated in a double deviation correction mode in a state of swinging on both sides, and the bottom of the deflection frame 11 is further provided with a positioning wheel 14, and a plurality of piezoelectric ceramic accelerators 17 are staggered on both sides of the deviation correction roller 8, and the piezoelectric ceramic accelerator 17 is a sheet type or block type bidirectional piezoelectric driver, and the driving displacement range is ±2 mm, and it is used for compensating the fabric edge jumping caused by high-frequency disturbance;

[0048] When the textile fabric body 4 passes through the induction module, the selvedge simultaneously passes through the distance sensors 16 between the two sides and the U-shaped detection area of the ultrasonic detector 10, the distance sensors 16 measure the lateral distance between the selvedge and the reference point, and the ultrasonic detector 10 captures the deviation state of the overall profile of the fabric in real time, and sends the detection results to the control system respectively; the judgment unit of the control system outputs the control instruction to the correction module after comprehensively judging the signals; if the fabric deviation is detected, the control system immediately drives the extension end of the cylinder 13 to act, so that the deflection frame 11 rotates around the rotating column 12 to drive the deflection angle of the correction roller 8, and the fabric is slightly adjusted and corrected in the opposite direction, so that it is kept near the set conveying center line; in this process, the piezoelectric ceramic accelerators 17 arranged staggered on both sides of the correction roller 8 will simultaneously respond to the change of the sensing data, and perform sub-millimeter level fast fine adjustment movement, dynamically compensate the high-frequency jumping of the selvedge that may occur, and ensure that high-precision and stable continuous correction can be realized even in the process of high-speed fabric transmission.

[0049] The control system further comprises a fabric type identification module, which obtains the type information of the current fabric based on image recognition or RFID mode, and automatically adjusts the output air pressure of the air floating hole 28, the response sensitivity of the correction roller 8 and the driving parameters of the piezoelectric ceramic accelerator 17 according to the identification result;

[0050] Before the fabric enters the conveying system, the fabric type identification module starts the identification action, scans the fabric surface pattern, texture or label by using the image recognition equipment, or reads the electronic tag information on the fabric by the RFID reader, the system judges the type, thickness, gram weight and other properties of the fabric according to the identification result, and transmits the related parameters to the control system; the control system automatically adjusts the working parameters of each execution module according to the identification result, including adjusting the air pressure output range and opening area of the air floating hole 28 on both sides of the tension conveying roller 6, so that the air film support adapts to the current fabric type, at the same time, the deflection angle range and response sensitivity of the correction roller 8 are corrected and set, and the response frequency, displacement amplitude and other compensation parameters of the piezoelectric ceramic accelerator 17 are updated synchronously; the above adjustment process is completed before the fabric enters the main transmission path, realizing the system "advance matching and adaptive parameter adjustment".

[0051] Those skilled in the art will understand that the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the scope (including claims) of the application be limited to these examples; under the concept of the application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the application as described above, which are not provided in detail for the sake of brevity.

[0052] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications, equivalents, improvements and the like are intended to be encompassed by the present application.

Claims

1. A double rectification mechanism for conveying textile fabric, characterized in that, The utility model relates to a textile machine body, which comprises a mounting connecting plate for mounting with an external textile machine body, a positioning frame is arranged on one side of the mounting connecting plate, a bearing frame is arranged on the side away from the mounting connecting plate of the positioning frame, a textile fabric body is arranged on the bearing frame, positioning plates are arranged at both ends of the middle part of the positioning frame, a pretreatment assembly is arranged in the middle part of the two positioning plates, the pretreatment assembly is used for pretreatment of the textile fabric body before conveying, the pretreatment assembly comprises tensioning conveying rollers which are jointly installed at the middle part of the two positioning plates, mounting plates are arranged on both sides of the positioning frame, vertical plates are arranged on one side of the top of the mounting plates, two sliding sleeves are arranged on the middle part of the top of the mounting plates, sliding rods are jointly and slidingly installed on the two sliding sleeves, a pre-tightening pressing rod is jointly arranged on one side of the two sliding rods, vertical jacks are vertically and slidingly installed on the vertical plates, top jacks are jointly arranged on the top of the two vertical jacks, a top driving rod is jointly arranged on the top of the two vertical jacks, a double deviation correction assembly is arranged on the other side of the positioning plate, the double deviation correction assembly is used for position correction when the textile fabric body is conveyed, the double deviation correction assembly comprises a sensing module and a correction module, the sensing module is used for sensing whether the textile fabric body is deviated, and the correction module is used for correction after the sensing module senses that the textile fabric body is deviated, a control system comprises a signal receiving unit, a judgment unit and an execution unit, the signal receiving unit is used for receiving the deviation detection signal of the sensing module, the judgment unit is used for judging the deviation state of the textile fabric body according to the deviation detection signal, and the execution unit is used for controlling the correction module to adjust the position of the textile fabric body. The tensioning conveying rollers are driven by an additional motor or are rotated by the movement of the textile fabric body, the pre-tightening pressing rod can be in contact with one side of the textile fabric body during the process of being pushed outwards, and the top jacks drive the textile fabric body to swing up and down during the process of reciprocating and retracting. The sliding rods are provided with driving plates, the middle part of the vertical jacks is slidingly installed on the arc-shaped driving grooves, the other side of the mounting plates is provided with positioning seats, rotating rods are rotatably installed on the positioning seats, the tensioning conveying rollers and the rotating rods rotate coaxially, the other side of the rotating rods is provided with connecting rods, and the other side of the connecting rods is rotatably connected with the bottom of one side of the arc-shaped driving grooves. When the tensioning conveying rollers rotate, the rotating rods and the connecting rods rotate, drive the driving plates and the sliding rods to reciprocally horizontally move, and during the process of reciprocally horizontally moving of the sliding rods and the driving plates, the vertical jacks reciprocally vertically move, and the reciprocally horizontal movement of the sliding rods and the reciprocally vertical movement of the vertical jacks are staggered. One side of the top jacks and one side of the pre-tightening pressing rod are both arranged in a semicircular arc shape. ​ ​ 2. The double deviation rectifying mechanism for conveying the textile fabric as claimed in claim 1 wherein, ​ 3. The double deviation rectifying mechanism for conveying the textile fabric according to claim 2, wherein, ​ 4. The double deviation rectifying mechanism for conveying textile fabric as claimed in claim 3 wherein, Two sides of the tension conveying roller are provided with two sections of air floating holes, the air floating holes are micro air injection holes arranged in an inclined manner, the diameter ranges from 0.2mm to 0.5mm, the two sections of air floating holes are arranged in an inclined manner on the left and right sides respectively, the inclination angle ranges from 20° to 45°, the two sections of air floating holes can be connected to an external stable gas source with a pressure of 0.3-0.5MPa, and the opening and closing ratio of the gas source in each area can be adjusted, so as to form a transverse air pressure difference on the surface of the tension conveying roller and realize non-contact transverse pushing of the textile fabric body, and the initial centering is realized for different fabric widths.

5. The dual rectifying mechanism for textile fabric conveying as claimed in claim 1 wherein, The sensing module comprises a deviation rectifying frame fixedly installed on one side of the two positioning plates, the bottom of the deviation rectifying frame is provided with an extension frame on both sides, one side of the extension frame is provided with a distance sensor, one side of the top of the mounting connecting plate is provided with a fixed rod, one side of the fixed rod is provided with an ultrasonic detector, the ultrasonic detector is in a U shape, the textile fabric body passes between the two distance sensors and the middle part of the U-shaped ultrasonic detector.

6. The dual deviation rectifying mechanism for conveying textile fabric as claimed in claim 5 wherein, The correction module comprises a rotating column rotatably installed in the middle of the bottom of the deviation rectifying frame, the top of the rotating column is provided with a deflection frame, the deflection frame is provided with a deviation rectifying roller, one side of the deviation rectifying frame is provided with a gas cylinder, one side of the deflection frame is rotatably connected to the extension end of the gas cylinder, in the process of extension and retraction of the gas cylinder, the deflection frame and the deviation rectifying roller follow the deflection on the rotating column, the deviation rectifying roller performs double deviation rectifying operation in the state of swinging on both sides, and the bottom of the deflection frame is also provided with a positioning wheel.

7. The dual deviation correcting mechanism for conveying the textile fabric according to claim 6, wherein, The two sides of the deviation rectifying roller are staggered and provided with a plurality of piezoelectric ceramic accelerators, the piezoelectric ceramic accelerators are sheet type or block type bidirectional piezoelectric drivers, the driving displacement range is ±2mm, and the piezoelectric ceramic accelerators are used for compensating the fabric edge jumping caused by high frequency disturbance.

8. The dual guiding mechanism for textile fabric conveying as claimed in claim 1 wherein, The control system further comprises a fabric type identification module, the fabric type identification module obtains the type information of the current fabric based on image recognition or RFID mode, and automatically adjusts the air floating hole output air pressure, the deviation rectifying roller response sensitivity and the driving parameters of the piezoelectric ceramic accelerator according to the identification result.

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