A winding device for preventing fabric from wrinkling

Abstract

The present invention discloses a winding device for preventing fabric from being wrinkled, comprising a support plate, the upper surface of which is an inclined surface and gradually rises from the fabric inlet side to the fabric outlet side; a winding mechanism, which is arranged on the fabric outlet side of the support plate and winds up the fabric at a uniform speed; an expansion roller, which is rotatably arranged across the support plate, and the expansion roller and the upper surface of the support plate jointly act on the upper and lower surfaces of the jacquard sofa fabric passing through; an adjustment mechanism, which drives and connects the expansion roller, and drives the expansion roller to move horizontally along the warp direction of the fabric after detecting the arch of the jacquard sofa fabric. This scheme realizes the adjustment of the friction between the expansion roller and the fabric when winding the fabric by setting a support plate with an inclined upper surface and an expansion roller that can move horizontally. When the fabric is arched, the friction between the fabric and the expansion roller is reduced by causing the expansion roller to move horizontally, so that the arched fabric can pass smoothly and flattened, thereby avoiding the situation where the fabric is wrinkled.

Description

Technical Field

[0001] The invention relates to a winding device, in particular to a winding device for preventing fabric from being wrinkled. Background Art

[0002] Jacquard sofa fabrics are widely used in sofa production due to their beautiful patterns, variety and excellent elasticity. After the jacquard sofa fabrics are produced and processed, they need to be rolled up with a winding device to facilitate subsequent transportation and storage.

[0003] Traditional fabric winding devices often have the following problems when winding jacquard sofa fabrics: sofa fabrics have high elasticity and flexibility, and after jacquard processing, the local elastic properties of the sofa fabrics change, resulting in uneven elasticity and errors during winding. Such errors will accumulate over a long period of time, causing the jacquard sofa fabrics to deflect during winding, and the side with more prominent expansion capacity is prone to arching at the expansion roller. After the arching occurs, the arched sofa fabrics are very likely to pass through the expansion rollers in a layered wrinkled manner, and the jacquard sofa fabrics are then pressed with irreversible wrinkles, affecting the winding quality of the jacquard sofa fabrics. Summary of the invention

[0004] The object of the present invention is to provide a winding device for preventing fabric from being wrinkled, so as to solve the problem that the existing winding device is easily wrinkled when winding jacquard sofa fabric.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A winding device for preventing fabric from being wrinkled, comprising

[0007] A support plate, wherein the upper surface of the support plate is an inclined surface, and the upper surface of the support plate gradually rises from the fabric inlet side to the fabric outlet side;

[0008] The winding mechanism is arranged on the fabric outlet side of the support plate and winds up the expanded fabric at a uniform speed;

[0009] An expansion roller is rotatably arranged above the support plate, and the expansion roller and the upper surface of the support plate act together on the upper and lower surfaces of the jacquard sofa fabric passing through;

[0010] The adjusting mechanism drives the expansion roller, and after detecting the arching of the jacquard sofa fabric, drives the expansion roller to move horizontally along the warp direction of the fabric.

[0011] Preferably, the upper surface of the support plate has an inclination angle of 3 to 5°.

[0012] Preferably, the adjustment mechanism comprises

[0013] An adjusting assembly is used to drive the expansion roller to move horizontally in the longitudinal direction;

[0014] A detection component, used for detecting the arched fabric and driving the adjustment component to act;

[0015] The adjustment assembly includes pillars arranged on both sides of the support plate, the pillars are provided with a screw motor, a screw is coaxially arranged in the screw motor, one end of the screw is connected to a universal assembly, and the universal assembly includes a ball seat connected to one end of the screw and a shaft ball rotatably arranged in the ball seat;

[0016] The expanding roller comprises a roller body, one end of which is provided with an adjusting sleeve capable of axial sliding. One of the two shaft balls is coaxially connected to one end of the roller body, and the other is coaxially connected to the adjusting sleeve.

[0017] Preferably, the detection assembly includes a synchronous frame connected to the screw rod, at least two groups of detection parts are symmetrically arranged on the left and right of the synchronous frame, the detection part includes a detection rod elastically hinged on the synchronous frame, the detection rod has a detection end and a pressure end, the detection end extends to the feed side of the expansion roller and has a height difference with the supporting surface that is at least greater than the thickness of the fabric, and the synchronous frame is also provided with a trigger switch corresponding to the detection rod, the trigger switch electrical signal is connected to the screw motor on the side, after the jacquard sofa fabric arches and lifts the detection end of the detection rod, the pressure end presses down and presses against the trigger switch.

[0018] Preferably, the synchronization frame includes a fixed frame connected to the screw rod, one end of the fixed frame is connected to a telescopic rod extending vertically, the lower end of the telescopic rod is connected to a support rod extending horizontally along the weft direction, and the detection rods are symmetrically arranged on the support rod on the left and right.

[0019] Preferably, the expansion roller also includes a driving motor A, and the ball seat is provided with an avoidance groove. The output shaft of the driving motor A passes through the avoidance groove and is connected to the shaft ball coaxially with the roller body. The ball seat is also provided with a pin shaft vertically coaxial with the shaft ball. A connecting plate is connected to the pin shaft so as to be horizontally rotatable, and the connecting plate is fixedly connected to the driving motor A.

[0020] Preferably, the winding mechanism includes a bracket, on which two parallel rollers are rotatably mounted, one of which is driven and connected to a drive motor B; and also includes a winding shaft, which is placed on the two rollers and is in tangential contact with the surfaces of the connected rollers.

[0021] Preferably, the bracket is also provided with a vertically extending guide groove, and both ends of the winding shaft can be slidably arranged in the guide groove up and down.

[0022] Preferably, guide rods extending along the axial direction of the roller are symmetrically arranged on both sides of the bracket, and baffles are slidably mounted on the guide rods. After a threaded crank spirally passes through the baffle, the ends thereof can be connected to the bracket in a relatively rotatable manner.

[0023] Preferably, a guiding mechanism is also provided between the expansion roller and the winding mechanism.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In this solution, the upper surface of the support plate is set as an inclined surface, and when the expansion roller moves horizontally along the warp direction of the rolled fabric, the gap between the expansion roller and the support plate can change. When the thickness of the rolled fabric remains unchanged, adjusting the gap between the expansion roller and the support plate can effectively adjust the friction force of the expansion roller on the jacquard sofa fabric, so that when the jacquard sofa fabric is arched, the arched fabric can pass smoothly between the expansion roller and the support plate in a smooth posture by reducing the friction force, avoiding the situation that the fabric (especially the elastic sofa fabric) is easily wrinkled when the existing winding device is winding the fabric.

[0026] 2. The inclination angle of the support plate surface is set to 3~5°. At this inclination angle, the distance pushed out by the expansion roller and the increased distance of the expansion roller relative to the support plate surface are in a suitable ratio (approximately between 12:1 and 20:1). At this length-to-height ratio, as the expansion roller is slowly pushed out, the length of the arched part of the fabric can be eliminated smoothly and orderly. There will be no violent fluctuations caused by the arched fabric quickly compensating to the back fabric ((the support plate angle is too large, the expansion roller moves, causing the distance between the support plate and the expansion roller to increase rapidly, and the friction of the expansion roller on the fabric surface decreases rapidly).

[0027] 3. The area where the elasticity of the jacquard sofa fabric changes varies depending on the jacquard pattern on the fabric. In this solution, the universal joint, the lead screw motor and the lead screw are combined to enable the expansion roller to move obliquely in a targeted manner according to the arching of the fabric in different areas on the left and right sides, thereby releasing the fabric on the arched side in an orderly manner.

[0028] 4. At least two groups of detection parts are arranged in the detection assembly, which are arranged on the left and right sides, so as to cooperate in realizing the automatic left-right adjustment of the expansion roller.

[0029] 5. The support rod on the synchronous frame can be flexibly adjusted in height through the telescopic rod, so that the arch height of the fabric that can be detected by the detection rod can be flexibly adjusted to better meet the detection needs of fabrics of various thicknesses.

[0030] 6. The expansion roller is actively rotated by the drive motor A, so that the rotation speed of the expansion roller can be better adjusted to better match the feed speed of the fabric.

[0031] 7. The winding mechanism uses two rollers to drive the winding shaft to wind the fabric to keep the winding line speed constant and ensure the stability of the fabric winding.

[0032] 8. Set up guide grooves and baffles to guide and constrain the reel during the reeling process to prevent the reel from deviating.

[0033] 9. A guiding mechanism is set up to guide the fabric after expansion and improve the positive direction of the fabric when it is rolled up. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 It is a front view of the present invention;

[0036] Figure 3 is a top view of the present invention;

[0037] Figure 4 It is a partial enlarged view of the mark A;

[0038] Figure 5 It is a partial enlarged view of the mark B;

[0039] Figure 6 It is a partial enlarged view of the mark C;

[0040] Figure 7 This is a partial enlarged view of mark D.

[0041] Reference numerals:

[0042] 1. Support plate;

[0043] 2. Reeling mechanism 21. Bracket 22. Roller 23. Driving motor B 24. Reeling shaft 25. Guide groove 26. Baffle 27. Guide rod 28. Threaded crank;

[0044] 3. Expanding roller 31. Roller body 32. Adjusting sleeve 33. Driving motor A

[0045] 4. Adjustment mechanism 41. Adjustment assembly 411. Support 412. Screw motor 413. Screw 414. Universal assembly 4141. Ball seat 4141a. Avoidance groove 4142. Shaft ball 415. Pin 416. Connecting plate 42. Detection assembly 421. Synchronous frame 4211. Fixed frame 4212. Telescopic rod 4213. Support rod 422. Detection part 4221. Detection rod 4221a. Detection end 4221b. Pressure end 4222. Trigger switch

[0046] 5. Guiding mechanism. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] When winding jacquard sofa fabrics with outstanding elasticity, expansion rollers are usually used to avoid warp wrinkles in the fabric. However, due to the uneven elasticity of the fabric, the expansion error is easily accumulated at the expansion roller, and after a certain period of time, an arch appears on the front side of the expansion roller, resulting in the jacquard sofa fabric often being wrinkled in the weft direction.

[0051] In order to solve the above problems, this solution adopts the following technical solutions. Figures 1 to 7A winding device for preventing fabric from being wrinkled is shown, comprising a support plate 1, the upper surface of which is an inclined surface and gradually rises from the fabric inlet side to the fabric outlet side.

[0052] The winding mechanism 2 is installed on the cloth outlet side of the support plate to wind up the cloth at a uniform speed after the cloth is expanded and flattened.

[0053] The widening roller 3 is arranged above the support plate 1, and a gap is left between the lower edge of the widening roller and the support plate for the cloth to be rolled up to pass through. It should be noted that the widening roller has symmetrically arranged left and right spiral patterns, so that when it rotates, it applies a weft-stretching force to the surface of the jacquard sofa fabric to flatten the fabric.

[0054] It should be noted that due to the irregularity of the jacquard pattern on the jacquard sofa fabric, the uniformity of the elasticity of the sofa fabric is destroyed (especially for asymmetric large-area jacquard sofa fabric). After a long period of winding, the jacquard is biased towards the larger side, and its elasticity is poor, which is prone to over-tensioning, while the fabric on the side with less jacquard surface is prone to arching in front of the widening roller after excessive stretching. At this time, if the widening roller continues to rotate, the sofa fabric arched to a certain height will pass between the widening roller and the support plate in the form of overlapping folds, resulting in irreversible weft indentations on this part of the fabric, affecting the overall winding quality of the jacquard sofa fabric.

[0055] For this reason, it is necessary to timely intervene in the expansion roller when the jacquard sofa fabric is arched, so that the arched sofa fabric can be rolled up in time.

[0056] Specifically, an adjustment mechanism 4 is provided on the support plate, and the adjustment mechanism is connected to the widening roller by driving. When the jacquard sofa fabric is arched, the adjustment mechanism can drive the widening roller to move toward the forward side of the support plate, thereby increasing the distance between the upper surface of the support plate and the lower edge of the widening roller, and reducing the friction between the widening roller and the jacquard fabric, so that the arched fabric can be smoothly rolled away by the rear winding mechanism 2 in the form of sliding. Finally, the purpose of quickly flattening the left and right sides of the jacquard sofa fabric is achieved.

[0057] It should be noted that, compared with the vertical lifting expansion roller, in the above embodiment, because the expansion roller 3 moves horizontally under the action of the adjustment machine 4, it can also perform a flattening action on the arched jacquard fabric during the movement, thereby further improving the effect of flattening the fabric.

[0058] It should be noted that in the above embodiment, as a preferred embodiment, the inclination angle of the support plate is 3 to 5 degrees, which is the best. The right triangle formed at this inclination angle has a ratio between the horizontal right angle side and the vertical right angle side between 12:1 and 20:1. Under this ratio, when the rod expansion roller is pushed horizontally, the distance between the lower edge of the expansion roller and the upper surface of the support plate can be increased at a relatively slow speed, ensuring that the friction force of the expansion roller on the surface of the jacquard sofa fabric is slowly reduced, thereby avoiding the violent impact caused by the arched fabric quickly compensating to the fabric between the expansion roller and the winding mechanism (rapid compensation of fabric length is prone to trembling, causing instability in the subsequent winding state).

[0059] It should be noted that in the above scheme, the adjustment mechanism 4 is composed of two parts. One is the adjustment component 41 for driving the expansion roller, and the other is the detection component 42 for detecting whether the fabric is arched. It should be noted that the arching of the jacquard sofa fabric usually occurs on one side (the side with a smaller jacquard area and better elasticity).

[0060] In order to achieve balanced adjustment, the expansion roller can be provided with a unilateral adjustment capability, that is, the arched side moves toward the cloth feeding direction of the support plate.

[0061] Specifically, the adjustment component 41 includes pillars 411 arranged on both sides of the support plate 1, and a screw motor 412 is installed on each of the two pillars. The screw motor is a hollow shaft structure, and the direction of the rotating shaft is the same as the cloth feeding direction. A screw 413 is coaxially screwed in the hollow shaft of the screw motor. By rotating the hollow shaft of the screw motor, the screw can be driven to move axially relative to the screw motor. It should be noted that a universal assembly 414 is connected to one end of the screw, and is connected to both ends of the expansion roller 3 through the universal assembly. When the detection component detects that the fabric is arched on one side, the screw motor on that side can be driven to rotate, thereby driving the screw on that side to move axially, and the end of the expansion roller connected to it also moves toward the cloth feeding side successively. The gap between the expansion roller on that side and the support plate also increases accordingly, and the friction force of the expansion roller on the surface of the fabric is reduced, so that the arched fabric can pass smoothly and flattened between the expansion roller and the support plate.

[0062] It should be noted that the universal assembly in this solution adopts a shaft ball structure, which includes a ball seat 4141 and a shaft ball 4142 installed in the ball seat. The ball seat is connected to the screw rod, and the shaft ball is coaxially connected to the shaft end of the expansion roller.

[0063] In addition, it is also necessary to know that as the widening roller deflects, the distance between the two universal assemblies also increases. At this time, in order to ensure the stability of the connection between the widening roller and the universal assembly, the widening roller 3 has the ability to adjust its length when it deflects.

[0064] Specifically, the widening roller includes a roller body 31 with left and right threads, with shaft ends at both ends of the roller body, and an adjustment sleeve 32 on one of the shaft ends, which can slide along the axial direction of the roller body 31. It should be noted that one of the shaft balls is coaxially connected to the adjustment sleeve 32.

[0065] It should also be noted that in order to accurately detect the arched side of the jacquard sofa fabric, in this solution, the detection component 42 includes a synchronous frame 421 connected to the screw rod 413 and capable of moving synchronously with the screw rod, and the synchronous frame is symmetrically provided with at least two groups of detection parts 422. When the fabric is arched, the detection part on that side can detect the phenomenon in time and provide timely feedback to the screw motor 412 on the same side electrically connected thereto.

[0066] It should be noted that in this solution, the detection part 422 specifically includes a detection rod 4221, which has a detection end 4221a and pressure ends 4221b. The detection end extends to the lower front side of the expansion roller and maintains a height higher than the thickness of the rolled fabric between the support plate. In addition, the detection rod is elastically hinged with the synchronous frame where it is located, that is, after the detection rod is lifted by the arched fabric in time, it can still be reset after the fabric is flattened to achieve continuous detection. It should be noted that a trigger switch 412 corresponding to the number of detection rods is also installed on the synchronous frame 421. The trigger switch is a pressure switch. When the arched part of the jacquard sofa fabric lifts the detection end of the detection rod, the pressure end immediately drops and presses on the trigger switch to start the trigger switch. It should be noted that the trigger switch in this solution is a sensitive pressure element, which can be triggered when the pressure reaches 0.1N.

[0067] In addition, based on the above scheme, the present scheme has also made the following optimizations. Specifically, the detection unit 422 on the synchronous frame 421 has the ability to be lifted up and down. In detail: the synchronous frame 421 includes a fixed frame 4211 fixedly connected to the screw rod 413, and the end of the fixed frame is connected to a vertically extending telescopic rod 4212, which is a threaded telescopic rod, and the telescopic length of the telescopic rod is adjusted by turning the nut. A support rod 4213 is connected to the lower end of the telescopic rod, and the support rod is arranged parallel to the upper surface of the support plate, and the detection unit is evenly arranged on the support rod. When the thickness of the rolled fabric is different, the height of the arch will change under the same degree of arching. At this time, in order to adapt to the height change, the height of the detection rod in the detection unit can be adjusted by the telescopic rod.

[0068] It should also be noted that, in actual use, the widening roller can be passive or active. Among them, the active form can better adapt to the feeding speed of the cloth and minimize the frequency of arching during the winding process. To this end, in this scheme, the widening roller 3 also includes a drive motor A33, and the output shaft of the drive motor A passes through the avoidance groove 4141a opened on one of the ball seats 4141 and is connected to the shaft ball in the ball seat. It should be noted that the connection between the drive motor and the shaft ball needs to ensure that the roller body, the shaft ball, and the output shaft of the drive motor A of the widening roller are on the same axis to ensure that the drive motor can smoothly drive the roller body to rotate. In addition, it should be noted that in order to ensure that the drive motor can rotate with the roller body when it is deflected, a pin shaft 415 vertically coaxial with the shaft ball is also provided on the ball seat 4141, and a connecting plate 416 that can rotate around the pin shaft is installed on the pin shaft, and the connecting plate is connected to the drive motor A33 so that the drive motor can rotate around the pin shaft 415.

[0069] It should also be noted that when rolling up the fabric, in order to ensure that the speed of rolling up the fabric is constant as the diameter of the fabric roll gradually increases, the winding mechanism 2 in this solution includes a bracket 21, on which two rollers 22 parallel to each other can be rotatably mounted. In addition, one of the rollers serves as an active roller, and one end of the roller passes through the bracket 21 and is connected to a driving motor B23. In addition, a winding shaft 24 is placed between the two rollers. When rolling up the fabric, the winding shaft rotates and winds the fabric under the drive of one of the rollers serving as the active roller. It is only necessary to ensure that the rotation speed of the roller serving as the active roller is constant, and the winding speed of the fabric can also be kept constant.

[0070] In addition, it should be noted that in order to prevent the winding shaft from falling off the two rollers during the winding process, a vertically extending large guide groove is provided on the bracket 21, and the guide groove is located at the midline position of the two rollers. When the fabric is wound, the two shaft ends of the winding shaft are slidably arranged in the guide groove 25.

[0071] It should also be noted that in order to prevent the axial transmission of the winding shaft during winding and avoid the deflection of the fabric, two baffles 26 are also provided on the bracket, which can smoothly abut the two end faces of the winding shaft 24. In order to facilitate the placement of the winding shaft between the two baffles, the distance between the two baffles is adjustable. Specifically, the baffle is symmetrically provided with a horizontally extending guide rod 27 on the bracket, and the guide rod is slidably fitted through the baffle. At the same time, a crank 28 is also installed on the baffle, and the connecting part of the crank and the baffle is threaded, and the end of the crank is rotatably connected to the bracket. When it is necessary to adjust the distance between the two baffles, it is only necessary to shake the crank 28, which is convenient and quick.

[0072] In addition, it should be noted that a set of guiding mechanisms 5 is also arranged between the winding mechanism and the expansion roller of the present scheme. The guiding mechanism is the same as the conventional fabric guiding mechanism, that is, a tiltable guiding rod is used to guide the position deflection of the fabric passing thereon, thereby finally correcting the deviation.

[0073] Working principle: Before winding the jacquard sofa fabric, the staff will first wind one end of the jacquard sofa fabric on the winding mechanism, and at the same time ensure that the jacquard sofa fabric passes through the widening roller and the support plate and the guiding mechanism. Then, the position of the widening roller is adjusted by driving the screw motor so that the gap between the widening roller and the support plate can meet the widening requirements of the jacquard sofa fabric. During this period, it is also necessary to adjust the extension length of the telescopic rod according to the subsequent winding of the jacquard sofa fabric, so that the detection group can accurately detect the information of the arching of the jacquard sofa fabric during the subsequent winding.

[0074] When the above debugging is completed, start the winding mechanism to wind up the jacquard sofa fabric. During the winding process, if the fabric is arched, the detection group will detect the relevant information in time and drive the screw motor on that side to operate. With the action of the screw motor, the expansion roller on the side where the fabric is arched moves toward the direction of the fabric feed, and the gap between the expansion roller and the support plate increases. The friction force of the expansion roller on this side acting on the surface of the fabric is then reduced, and the fabric can pass through the expansion roller smoothly, eliminating the arched part of the fabric. It should be noted that during the deflection of the expansion roller, it also implements a horizontal flattening action on the arched fabric to better flatten the fabric.

[0075] Through the above structure and working method, this solution effectively solves the problem that the jacquard sofa fabric is easily wrinkled when the existing winding mechanism is used to wind up the jacquard sofa fabric.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A winding device for preventing fabric from being wrinkled, characterized in that: include A support plate (1), wherein the upper surface of the support plate (1) is an inclined surface, and the upper surface of the support plate (1) gradually rises from the fabric inlet side to the fabric outlet side of the fabric; A winding mechanism (2) is arranged on the fabric outlet side of the support plate (1) and is used to wind up the expanded fabric at a uniform speed; An expansion roller (3) is rotatably arranged across the support plate (1), wherein the expansion roller (3) and the upper surface of the support plate (1) act together on the upper and lower surfaces of the jacquard sofa fabric passing through; The adjusting mechanism (4) drives the expansion roller (3) and drives the expansion roller (3) to move horizontally along the warp direction of the fabric after detecting the arching of the jacquard sofa fabric; The regulating mechanism (4) comprises An adjusting component (41) is used to drive the expansion roller (3) to move horizontally in the longitudinal direction; A detection component (42) is used to detect the arched fabric and drive the adjustment component (41) to operate; The adjustment assembly (41) comprises pillars (411) arranged on both sides of the support plate (1), a screw motor (412) being arranged on the pillars (411), a screw (413) being coaxially arranged in the screw motor (412), one end of the screw (413) being connected to a universal joint assembly (414), and the universal joint assembly (414) comprising a ball seat (4141) connected to one end of the screw (413) and a shaft ball (4142) rotatably arranged in the ball seat (4141); The widening roller (3) comprises a roller body (31), one end of the roller body (31) having a sliding sleeve and an adjustment sleeve (32) capable of axial sliding, one of the two shaft balls (4142) being coaxially connected to one end of the roller body (31), and the other being coaxially connected to the adjustment sleeve (32); The detection assembly (42) comprises a synchronous frame (421) connected to the screw rod (413), at least two groups of detection parts (422) are symmetrically arranged on the left and right of the synchronous frame (421), the detection part (422) comprises a detection rod (4221) elastically hinged on the synchronous frame (421), the detection rod (4221) has a detection end (4221a) and a pressure end (4221b), the detection end (4221a) extends to the expansion roller ( 3) and having a height difference at least greater than the thickness of the fabric between the feeding side and the supporting surface, the synchronous frame (421) is also provided with a trigger switch (4222) corresponding to the detection rod (4221), the trigger switch (4222) is electrically connected to the screw motor (412) on the side, and after the jacquard sofa fabric arches and lifts the detection end (4221a) of the detection rod (4221), the pressure end (4221b) presses down and presses against the trigger switch (4222); The synchronous frame (421) comprises a fixed frame (4211) connected to the screw rod (413); one end of the fixed frame (4211) is connected to a telescopic rod (4212) extending vertically; the lower end of the telescopic rod (4212) is connected to a support rod (4213) extending horizontally along the weft direction; and the detection rods (4221) are symmetrically arranged on the support rod (4213) in left and right directions. The expansion roller (3) also includes a drive motor A (33). The ball seat (4141) is provided with an avoidance groove (4141a). The output shaft of the drive motor A (33) passes through the avoidance groove (4141a) and is coaxially connected to the shaft ball (4142) with the roller body (31). The ball seat (4141) is also provided with a pin shaft (415) vertically coaxial with the shaft ball (4142). A connecting plate (416) is connected to the pin shaft (415) in a horizontally rotatable manner. The connecting plate (416) is fixedly connected to the drive motor A (33).

2. A winding device for preventing fabric from being wrinkled as claimed in claim 1, characterized in that: The upper surface of the support plate (1) has an inclination angle of 3 to 5°.

3. A winding device for preventing fabric from being wrinkled as claimed in claim 1, characterized in that: The winding mechanism (2) comprises a bracket (21), on which two parallel rollers (22) are rotatably mounted, one of the rollers (22) being drive-connected to a drive motor B (23); and a winding shaft (24), which is placed on the two rollers (22) and in tangential contact with the surfaces of the two rollers (22).

4. A winding device for preventing fabric from being wrinkled as claimed in claim 3, characterized in that: The bracket (21) is also provided with a guide groove (25) extending vertically, and the two ends of the winding shaft (24) are slidably arranged in the guide groove (25) so as to slide up and down.

5. A winding device for preventing fabric from being wrinkled as claimed in claim 4, characterized in that: Guide rods (27) extending along the axial direction of the rotating roller (22) are symmetrically arranged on both sides of the support (21), and a baffle (26) is slidably mounted on the guide rod (27). After a threaded crank (28) spirally passes through the baffle (26), the end portion is connected to the support (21) in a relatively rotatable manner.

6. A winding device for preventing fabric from being wrinkled as claimed in claim 1, characterized in that: A guiding mechanism (5) is also provided between the expanding roller (3) and the winding mechanism (2).

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