Double-deviation-rectifying mechanism for textile fabric conveying

Abstract

The invention relates to the technical field of textile, in particular to a double-deviation-rectifying mechanism for textile fabric conveying, which comprises a mounting connecting plate, the mounting connecting plate is used for being mounted with an external textile machine body, a positioning frame is arranged on one side of the mounting connecting plate, and a bearing frame is arranged on one side, away from the mounting connecting plate, of the positioning frame. A textile fabric body is arranged on the bearing frame, and positioning plates are arranged at the two ends of the middle of the positioning frame; the pretreatment assembly is arranged in the middle of the two positioning plates; and the double deviation rectifying assembly is arranged on the other side of the positioning plate, and the double deviation rectifying assembly is used for correcting the position when the textile fabric body is conveyed. Compared with the prior art, by arranging the pretreatment assembly, the cloth treatment precision and efficiency are improved, through a series of coordinated mechanical actions, the cloth position can be effectively stabilized, tension can be released, wrinkles can be pre-eliminated, and basic conditions are provided for subsequent high-precision deviation correction.

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 other factors 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 a swingable guide device or adjustment mechanism on both sides of the conveying path, taking the middle as the fixed reference, and the left and right sides swing together, 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 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.), this 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, resulting in 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%. This 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. 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 respond to small deviations during high-speed operation. For high-elasticity fabrics, the continuous action of this 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 exacerbating the deformation problem of the fabric.

[0004] Therefore, the present application discloses a double deviation rectification mechanism for textile fabric conveying. SUMMARY

[0005] In view of the above, the purpose of the present application is to provide a double deviation correction mechanism for textile fabric conveying, so as to solve the problem that the traditional fabric deviation correction mechanism lacks periodic tension release and dynamic adjustment capability when processing high-elasticity fabric, which easily causes stress concentration and irreversible deformation caused by continuous one-way traction, affecting the quality of the fabric.

[0006] Based on the above purpose, the present application provides a double deviation correction mechanism for textile fabric conveying, comprising a mounting connecting plate 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 part of the positioning frame is provided with positioning plates at both ends. A pretreatment assembly is arranged in the middle part of the two positioning plates, which is used for pretreatment of the textile fabric body before conveying. A double deviation correction assembly is arranged on the other side of the positioning plate, which is used for position correction when conveying the textile fabric body, and 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.

[0007] Preferably, the pretreatment assembly comprises a tensioning conveying roller rotatably mounted in the middle part of the two positioning plates, which can be driven by an additional motor or pulled to rotate by the movement of the textile fabric body, both sides of the positioning frame are provided with mounting plates, one side of the top of the mounting plate is provided with a vertical plate, the middle part of the top of the mounting plate is provided with two sliding sleeves, a sliding rod is rotatably mounted on the two sliding sleeves, one side of the two sliding rods is provided with a pre-tightening pressure rod, the pre-tightening pressure rod can contact one side of the textile fabric body during outward extrusion, the vertical plate is vertically slidably provided with vertical jacks, and the top of the two vertical jacks is provided with a top driving rod, which drives the textile fabric body to swing up and down during reciprocating extrusion and retraction.

[0008] 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.

[0009] 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.

[0010] Preferably, one side of the top rod and one side of the pre-tightening pressing rod are both arranged in a semicircular arc shape.

[0011] 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 source in each area 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] The beneficial effects of the present application are: 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 sliding rod and the driving plate to reciprocate, and then realizing the periodic ejection and recovery of the vertical top rod and the top rod, ensuring the up and down lifting and placing of the cloth, at the same time, the horizontal movement of the sliding rod pushes the pre-tightening pressure rod into contact with the side edge of the cloth, providing stable lateral support, preventing the cloth from slipping or wrinkling, especially the staggered action of the top rod and the pre-tightening pressure rod, avoiding the cloth being stressed in up-down and left-right directions at the same time, reducing stress concentration, avoiding 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 pre-crease can be removed, providing basic conditions for subsequent high-precision deviation rectification. 2. The double deviation rectifying mechanism for textile fabric conveying, by setting two sections of air floating holes on the tensioning conveying roller, a non-contact transverse air flow is generated through the micro jet holes, realizing the flexible displacement and preliminary deviation rectification of the textile fabric, the inclined arrangement of the air floating holes and the adjustable air flow strength 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 ratio of the left and right air floating holes, a transverse air pressure difference is generated, which can automatically translate the cloth according to the initial position offset of the cloth, accurately adjust the cloth position, and achieve non-contact, continuous automatic deviation rectification effect. 3. The double deviation rectifying mechanism for textile fabric conveying, by setting the double deviation rectifying assembly, the distance sensor and ultrasonic detector in the sensing module monitor the deviation of the cloth in real time, after the judgment of the control system, the deviation rectifying instruction is sent in time, the correction module drives the deflection frame to rotate through the air cylinder, drives the deviation rectifying roller to fine adjust the cloth position, so that the cloth is kept near the set center line. At the same time, the staggered piezoelectric ceramic accelerators compensate for the high-frequency jumping of the cloth edge at the sub-millimeter level, ensuring accurate and stable deviation rectification even in high-speed transmission process. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the present application or the prior art, the drawings required to be used in the following embodiments or prior art description will be briefly introduced. 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 any creative effort based on these drawings.

[0018] Figure 1 It is a first perspective view of the structure of the present application. Figure 2 It is a second perspective view of the structure of the present application. Figure 3 It is a plan view of the double deviation correction assembly of the present application. Figure 4 It is a perspective view of the double deviation correction assembly of the present application. Figure 5 It is a running schematic view of the double deviation correction assembly of the present application. Figure 6 It is a schematic view of the pretreatment assembly and the textile fabric body structure of the present application. Figure 7 It is a plan view of the pretreatment assembly of the present application. Figure 8 It is a perspective view of the pretreatment assembly of the present application. Figure 9 It is a schematic view of the pretreatment assembly of the present application. Figure 10 It is a schematic view of the tensioning conveying roller and the air floating hole structure of the present application. Figure 11 It is a schematic view of the staggered running of the pretreatment assembly of the present application.

[0019] The marks in the figure are: 1, mounting connecting plate; 2, positioning frame; 3, bearing frame; 4, textile fabric body; 5, positioning plate; 6, tensioning conveying roller; 7, deviation correction frame; 8, deviation correction roller; 9, fixed 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 jacking rod; 25, positioning seat; 26, rotating rod; 27, connecting rod; 28, air floating hole; 29, jacking rod; 30, pre-tightening pressing rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present application more clear and explicit, the present application will be further described in detail below in combination with specific embodiments.

[0021] It should be noted that unless otherwise defined, technical terms or scientific terms used in the present application shall have the common meaning to those skilled in the art of the present application. The "first", "second" and similar words used in the present application do not represent any order, number or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] As shown in Figures 1 to 11 The double deviation rectification mechanism for conveying textile fabric 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 away from the mounting connecting plate 1 of the positioning frame 2, a textile fabric body 4 provided on the bearing frame 3, and a positioning plate 5 provided at the middle of both ends of the positioning frame 2. A pretreatment assembly is provided at the middle of the two positioning plates 5, and is used for pretreatment before conveying the textile fabric body 4. A double deviation rectification assembly is provided on the other side of the positioning plate 5, and is used for position correction when conveying the textile fabric body 4. The double deviation rectification assembly includes a sensing module and a correction module. The sensing module is used for sensing whether the textile fabric body 4 is deviated, and the correction module is used for correction after the sensing module senses that the textile fabric body 4 is deviated. A control system includes 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 4 according to the deviation detection signal. The execution unit is used for controlling the correction module to adjust the position of the textile fabric body 4. The rolled textile fabric body 4 is placed on the bearing frame 3, and then the textile fabric body 4 is subjected to tensioning or leveling treatment before conveying through the pretreatment assembly arranged between the two positioning plates 5, and then the fabric enters the double rectification assembly area. At this 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 judgment 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 execution unit in the control system immediately controls the rectification module to start, drives the rectification mechanism to adjust or fine-tune the fabric in the horizontal direction, so that the fabric returns to the normal path. In this closed loop process, the fabric realizes automatic 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. Through tensioning, leveling and preliminary positioning before the fabric formally enters the rectification area, wrinkles, skewing, uneven tension and other problems caused by fabric winding or storage can be effectively eliminated, providing stable input for subsequent rectification and improving the response accuracy and consistency of the rectification system.

[0023] 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, the two sliding sleeves 20 are jointly and slidably installed 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 installed 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 installed 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, driving 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; 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 pushing out and retracting the top rod 29, and 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 after being pushed out, forming a stable pressure 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 achieve flexible contact when they contact 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. 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 problem of edge rolling and wave forming, and the like. 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 particularly suitable for high-speed running environment. Two sections of air floating holes 28 are arranged on both sides of the tensioning conveying roller 6. The air floating holes 28 are inclined micro-jet holes, with a diameter range of 0.2mm-0.5mm, and the two sections of air floating holes 28 are arranged in left and right opposite inclinations, with an inclination angle of 20°-45°. The two sections of air floating holes 28 can be respectively connected with an external stable gas source of 0.3-0.5MPa, and the opening and closing proportion of the gas source in each area can be adjusted, so as to form a horizontal pressure difference on the surface of the tensioning conveying roller 6, realize the non-contact horizontal displacement of the textile fabric body 4, and perform initial centering for different fabric widths. 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 connected 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) continuously sprays the inclined air flow at a pressure of 0.3-0.5 MPa through the jet holes with a diameter of 0.2-0.5 mm, and the jet 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 suspended and supported above the roller surface to avoid direct contact; at this time, the control system selectively adjusts the opening and closing ratio of the air floating holes 28 on the left and right sides 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 drive the fabric to slowly translate to one side, realize the non-contact, flexible and continuous preliminary deviation correction and adjustment; since the jet angle and air pressure can be adjusted, the system can adjust the jet intensity according to the weight, thickness or width of different fabrics, and realize the compatible adaptation to various fabric types.

[0024] 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. One side of the extension frame 15 is provided with a distance sensor 16, one side of the top of the installation connecting plate 1 is provided with a fixed rod 9, one side of the fixed rod 9 is provided with an ultrasonic detector 10, the ultrasonic detector 10 is in a U shape, 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. The top of the rotating column 12 is provided with a deflection frame 11, the deflection frame 11 is provided with a deviation correction roller 8, 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. In the process of the air cylinder 13 being telescopically extended and retracted, 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. 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. The piezoelectric ceramic accelerator 17 is a sheet type or block type bidirectional piezoelectric driver, the driving displacement range of which is ±2 mm, and it is used for compensating the fabric edge jumping caused by high-frequency disturbance; When the textile fabric body 4 passes through the induction module, the selvedge simultaneously passes between the distance sensors 16 on both 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 to perform sub-millimeter level fast fine adjustment action, 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.

[0025] 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; Before the fabric enters the conveying system, the fabric type identification module starts the identification action, uses the image recognition equipment to scan the surface pattern, texture or label of the fabric, 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".

[0026] Those skilled in the art will understand that the discussion of any of the above embodiments is merely exemplary and is not intended to limit the scope of the present application (including claims) to these examples; under the idea of the present application, the technical features in the above embodiments or 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 present application as described above, which are not provided in detail for the sake of brevity.

[0027] 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 dual-tracking mechanism for conveying textile fabrics, characterized in that, include: The mounting connection plate is used to install with the external textile machine body. A positioning frame is provided on one side of the mounting connection plate, and a bearing frame is provided on the side of the positioning frame away from the mounting connection plate. The textile fabric body is provided on the bearing frame, and positioning plates are provided at both ends of the middle part of the positioning frame. A pretreatment component is disposed in the middle of the two positioning plates. The pretreatment component is used to pre-process the textile fabric body before conveying. The pretreatment component includes a tension conveying roller that is rotatably mounted in the middle of the two positioning plates. 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 the two sliding sleeves. A pre-tightening rod is provided on one side of the two sliding rods. A vertical top rod is slidably mounted on the vertical plate. A pushing rod is provided at the top of the two vertical top rods. 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. 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.

2. The dual-alignment mechanism for conveying textile fabrics according to claim 1, characterized in that, The tensioning conveyor roller can be driven by an added motor, or it can be rotated by the movement of the textile fabric body. The pre-tightening rod can contact one side of the textile fabric body during the outward pushing process. The pushing rod drives the textile fabric body to swing up and down during the reciprocating pushing out and retracting process.

3. The dual-alignment mechanism for conveying textile fabrics according to claim 2, characterized in that, A drive plate is provided on the sliding rod, and an arc-shaped drive groove is opened in the middle of the drive plate. The vertical top rod is T-shaped and the middle part of the vertical top rod is slidably installed on the arc-shaped drive groove. A positioning seat is provided on the other side of the mounting plate, and a rotating rod is rotatably installed on the positioning seat. The tensioning conveying roller rotates coaxially with the rotating rod. A connecting rod is provided on the other side of the rotating rod, and the other side of the connecting rod is rotatably connected to the bottom of one side of the arc-shaped drive groove.

4. The dual-alignment mechanism for conveying textile fabrics according to claim 3, characterized in that, When the tensioning conveyor roller rotates, the rotating rod and the connecting rod rotate accordingly, driving the drive plate and the sliding rod to reciprocate horizontally. During the horizontal reciprocating movement of the sliding rod and the drive plate, the vertical push rod reciprocates vertically, and the horizontal reciprocating movement of the sliding rod and the vertical reciprocating movement of the vertical push rod are interleaved.

5. The dual-alignment mechanism for conveying textile fabrics according to claim 4, characterized in that, One side of both the jacking rod and the pre-tightening rod is set in a semi-circular arc shape.

6. The dual-alignment mechanism for conveying textile fabrics according to claim 5, characterized in that, Two sections of air-bearing holes are provided on both sides of the tensioning conveyor roller. The air-bearing holes are inclined micro air jet holes with a diameter range of 0.2mm to 0.5mm. The two sections of air-bearing holes are arranged at an angle of 20° to 45° to the left and right respectively. The two sections of air-bearing holes can be connected to an external stable air source of 0.3 to 0.5MPa respectively, and the opening and closing ratio of the air source in each area can be adjusted to form a lateral air pressure difference on the surface of the tensioning conveyor roller, so as to realize non-contact lateral pushing of the textile fabric body and perform initial centering for different fabric widths.

7. The dual-alignment mechanism for conveying textile fabrics according to claim 1, characterized in that, The sensing module includes a correction frame fixedly installed on one side of the two positioning plates. Extension frames are provided on both sides of the bottom of the correction frame. A distance sensor is provided on one side of the extension frame. A fixing rod is provided on the top side of the mounting connecting plate. An ultrasonic detector is provided on one side of the fixing rod. The ultrasonic detector is U-shaped. The textile fabric body passes between the two distance sensors and is located in the middle of the U-shape of the ultrasonic detector.

8. The dual-alignment mechanism for conveying textile fabrics according to claim 7, characterized in that, The correction module includes a rotating column rotatably mounted at the bottom center of the correction frame. A deflection frame is provided at the top of the rotating column, and a correction roller is provided on the deflection frame. A cylinder is provided on one side of the correction frame, and the telescopic end of the cylinder is rotatably connected to one side of the deflection frame. During the telescopic process of the cylinder, the deflection frame and the correction roller deflect along with the rotating column. The correction roller performs a double correction operation while swinging on both sides. Positioning wheels are also provided on both sides of the bottom of the deflection frame.

9. The dual-alignment mechanism for conveying textile fabrics according to claim 8, characterized in that, Several piezoelectric ceramic actuators are staggered on both sides of the correction roller. The piezoelectric ceramic actuators are plate-type or block-type bidirectional piezoelectric actuators with a driving displacement range of ±2mm, which are used to compensate for the fabric edge jump caused by high-frequency disturbances.

10. The dual-alignment mechanism for conveying textile fabrics according to claim 1, characterized in that, The control system also includes a fabric type identification module, which obtains the type information of the current fabric based on image recognition or RFID, and automatically adjusts the output air pressure of the air flotation hole, the response sensitivity of the correction roller, and the driving parameters of the piezoelectric ceramic promoter according to the identification results.

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