A high-quality printing and dyeing anti-wrinkle device for regenerated fiber cloth

Abstract

The utility model discloses a high quality printing and dyeing anti -wrinkle device to face regenerated fiber cloth, apply to the fabric finishing equipment technical field, including the core shaft that can bend along the longitudinal direction, the flexible roll cover is equipped with the outside of core shaft through bearing assembly, linear drive assembly, including the control part of contact and resistance, and the roll surface of contact and resistance and flexible roll cover is attached, and the control part is used for controlling the core shaft bending of resistance piece up -and -down push, the surface linear velocity of flexible roll cover and fabric moving speed is synchronous, adopts servo motor and so on high accuracy drive assembly, can directly, fast, quantitatively adjust the physical bending arc of core shaft. According to the real -time data of fabric material, width, tension, closed loop dynamic control can be carried out, realizes the best flattening effect, avoids the under -expansion or over -stretching, and there is no relative linear velocity difference between flexible roll cover and fabric, fundamentally eliminates the sliding friction that causes fabric scratch, fluff, especially suitable for high value, high sensitivity material.

Description

Technical Field

[0001] This utility model relates to the field of fabric finishing equipment technology, specifically a high-quality printing and dyeing anti-wrinkle device for recycled fiber fabrics. Background Technology

[0002] During long-distance transport through multiple processes, fabrics are prone to longitudinal or transverse wrinkles due to uneven tension, changes in ambient temperature and humidity, or inherent equipment limitations. However, existing curved roller technology still has many limitations:

[0003] Fixed curvature arc roller: Its curvature is fixed at the factory. The disadvantage of this design is that it cannot adapt to fabrics with different weights, elasticities, and widths. It may not be able to flatten fabrics with poor elasticity, while it may cause excessive stretching of highly elastic fabrics, resulting in a narrower width.

[0004] Adjustable Curvature Arc Roller: Chinese Patent CN111071836A discloses a "Flexible Surface Flattening Roller with Adjustable Flattening Force". The core of its technical solution is: a rotatable support sleeve is fitted onto a fixed mandrel, and an elastic soft rubber sleeve is fitted over the support sleeve. By adjusting the deflection mechanisms at both ends of the mandrel, the rotating seat is deflected at an angle, thereby unevenly stretching the elastic rubber sleeve, forming a fan-shaped stretching area of ​​varying length on the roller surface. When the fabric rotates with it, it flattens itself by relying on the elastic stretching of the rubber sleeve. However, the flattening force originates from the stretching and rebound of the elastic rubber sleeve itself, and the fabric passively follows this deformed surface. This generates complex sliding friction and creep at the microscopic level, which can easily cause surface scratches, pilling, or permanent stretching deformation for high-grade fabrics such as silk and high-count cotton, or precision materials such as optical films. Utility Model Content

[0005] This invention aims to solve the technical problems of low adjustment accuracy, risk of damage to fabrics, poor speed matching and limited applicability of existing flattening rollers, and to provide an anti-wrinkle device for recycled fiber fabrics that can achieve pure rolling contact, high-precision curvature control and speed synchronization.

[0006] A high-quality anti-wrinkle printing and dyeing device for recycled fiber fabrics includes a mandrel, which is non-rotatable but bendable along its longitudinal direction; a flexible roller sleeve, which is sleeved outside the mandrel via a bearing assembly; and a linear drive assembly, including an abutment and a control unit, wherein the abutment and the roller surface of the flexible roller sleeve are in contact, and the control unit is used to control the upward movement of the abutment to push the mandrel to bend; wherein the surface linear velocity of the flexible roller sleeve is synchronized with the fabric movement speed.

[0007] Preferably, the number of rigid shaft segments is an odd number and at least three, the three rigid shaft segments are arranged along the axial direction, and adjacent rigid shaft segments are connected by spherical plain bearings, which allow rotation between the rigid shaft segments to achieve overall bending of the mandrel.

[0008] Preferably, the control unit includes a motor, a slide rail, a slider, and a ball screw assembly. The slide rail is connected to the frame, the motor is mounted on the slide rail, the motor's output shaft is fixed to the ball screw, a nut is fitted on the ball screw, the nut is fixedly connected to the slider, the slider slides vertically with the slide rail, an abutment is rotatably connected to the slider, the surface of the abutment is in contact with the surface of the flexible roller sleeve, and the motor is electrically connected to the mains power.

[0009] Preferably, a limiting fork is fixed on the slider, with its two arms extending obliquely to prevent the core from bending laterally.

[0010] Preferably, the bearing assembly includes multiple sets of self-aligning bearings, with several bearings distributed along the axial direction of the curved mandrel. The inner ring of the bearing is loosely fitted with the corresponding rigid shaft section, and the outer ring is tightly fitted with the flexible roller sleeve.

[0011] Preferably, the flexible roller sleeve is a seamless metal tube with closed ends. The outer surface of the metal tube is coated with polyurethane, and both ends are connected to the frame via seated spherical bearings, which allows for oscillation compensation when the mandrel bends.

[0012] Preferably, the fabric contacts the flexible roller sleeve at an angle greater than 90 degrees, and the flexible roller sleeve drives the fabric to rotate by friction; or, it also includes an active drive assembly, including a synchronous motor and a conveyor belt system, wherein the synchronous motor drives the flexible roller sleeve to rotate through the conveyor belt system to match the moving speed of the fabric, and the synchronous motor is electrically connected to the mains power.

[0013] Preferably, the mandrel has a feed roller at the feed end and an output roller at the output end, and the fabric is laid along the direction of the feed roller, the flexible roller sleeve, and the output roller.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. There is no relative linear velocity difference between the flexible roller sleeve and the fabric, which fundamentally eliminates the sliding friction that causes fabric scratches and pilling. It is especially suitable for processing high-value and highly sensitive materials such as silk, cashmere, and optical films.

[0016] 2. Employing high-precision drive assemblies such as servo motors, the physical bending curvature of the mandrel can be directly, quickly, and quantitatively adjusted. Closed-loop dynamic control can be performed based on real-time data of fabric material, width, and tension to achieve optimal flattening and avoid under-flattening or over-stretching.

[0017] 3. Whether driven passively or actively, the design of this invention ensures strict synchronization between the roller surface and the fabric linear speed. This minimizes the impact of the device on the operating tension of the production line (only enough to overcome the minor rolling resistance of the bearings), guaranteeing the stability of product dimensions.

[0018] 4. The core load-bearing components are all rigid metal parts and standard bearings, so there is no fatigue aging problem of elastic elements. The structure is stable, highly reliable, and has a long maintenance cycle.

[0019] 5. A single device, through program adjustment, can adapt to almost all types of winding materials, from ultra-thin films to heavy-duty canvases, making it extremely versatile. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a structural diagram of the wrinkle-reducing device.

[0022] Figure 2 This is a structural diagram of the flexible roller sleeve.

[0023] Figure 3 This is a structural diagram of the mandrel.

[0024] Figure 4 for Figure 3 A magnified view of A in the middle.

[0025] Figure 5 This is a partial structural diagram of the active drive assembly.

[0026] Figure 6 This is a schematic diagram showing the positions of the feed roller, the output roller, and the flexible roller sleeve.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Mandrel; 11. Rigid shaft section; 12. Spherical plain bearing; 13. Outer spherical bearing; 20. Flexible roller sleeve; 30. Linear drive assembly; 31. Contact element; 32. Motor; 33. Slide rail; 34. Slider; 35. Ball screw assembly; 36. Limit fork; 40. Feed roller; 50. Output roller; 60. Active drive assembly; 61. Pulley; 62. Tire. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] like Figures 1-6 .

[0031] Example 1

[0032] A passive flattening device, comprising a mandrel 10, a flexible roller sleeve 20, a linear drive assembly 30, a feed roller 40, an output roller 50, and a frame.

[0033] The spindle 10 includes an odd number of rigid shaft segments 11. In this embodiment, it is preferably three segments: rigid shaft segment 11a, rigid shaft segment 11b, and rigid shaft segment 11c, with rigid shaft segment 11b located in the middle of the three segments. The rigid shaft segments 11 are movably connected by spherical plain bearings 12. The spherical plain bearing 12 includes an inner ball and an inner ball seat. An inner ball is fixed on the end face of each rigid shaft segment 11. Two adjacent inner balls are connected by the same suspended inner ball seat. The kinematic pair between the inner ball and the inner ball seat is a ball joint, so two rigid shaft segments 11 can swing in three degrees of freedom.

[0034] The flexible roller sleeve 20 is a thin-walled seamless steel tube with a wear-resistant polyurethane coating on its outer surface. It has a good surface friction coefficient and a certain degree of flexibility to adapt to the bending of the mandrel. The flexible roller sleeve 20 is connected to the mandrel 10 through a bearing assembly and can bend synchronously with the mandrel 10.

[0035] The flexible roller sleeve 20 is connected to the frame via an outer spherical bearing 13. The outer spherical bearing 13 includes an outer ball and an outer ball seat. The two outer balls are respectively fixed on the end face of the flexible roller sleeve 20. The outer ball seat and the frame are detachably connected by threaded fasteners. The outer ball and the outer ball seat are connected by a ball joint to serve as the basis for the flexible roller sleeve 20 to rotate when it bends.

[0036] The bearing assembly includes several deep groove ball bearings. The outer ring of the bearing fits tightly with the inner wall of the flexible roller sleeve 20, while the inner ring loosely fits with the outer surface of the corresponding rigid shaft section 11. These bearings connect the flexible roller sleeve 20 to the outside of the spindle 10, ensuring that the flexible roller sleeve 20 can rotate freely around the stationary spindle 10 with minimal resistance.

[0037] The linear drive assembly 30 applies a vertical upward force to the spindle 10, causing a misalignment and deflection between several rigid shaft segments 11, resulting in a bending arc of the entire spindle 10. The linear drive assembly 30 specifically includes an abutment 31, a motor 32, and a slide rail 33. The slide rail 33 is fixed to the frame. The housing of the motor 32 is mounted on the slide rail 33. The motor 32 is electrically connected to the mains power. The ball screw assembly 35 includes a screw and a nut. The motor 32 is fixed to the screw via a key, coupling, or other connection method to ensure synchronous rotation of the motor 32's output shaft and the screw. A nut is threaded onto the screw. The nut is slidably connected to the slide rail 33. The nut is fixedly connected to a slider 34. The slider 34 is connected to the abutment 31, which is used to push upward against the rigid shaft segment 11b.

[0038] Preferably, the contact element 31 is a wheel, which can rotate together with the flexible roller sleeve 20.

[0039] Preferably, a limiting fork 36 is fixed on the slider 34. The limiting fork 36 can prevent the already arched flexible roller sleeve 20 from being accidentally displaced to both sides.

[0040] Preferably, the contact surfaces of the limiting fork 36 and the flexible roller sleeve 20 are smooth.

[0041] The feed roller 40 and the output roller 50 are located at the input end and output end of the spindle 10, respectively. Both the feed roller 40 and the output roller 50 are rotatably connected to the frame. Adjusting the position of the feed roller 40 and the output roller 50 can change the wrap angle of the fabric on the flexible roller sleeve 20 accordingly.

[0042] The working process of Example 1 is as follows:

[0043] The silk fabric is drawn out from the feed roller 40, wraps around the flexible roller sleeve 20 at an angle of approximately 120 degrees, and is then taken away by the output roller 50. After the production line starts, the moving fabric, through friction with the surface of the flexible roller sleeve 20, drives the flexible roller sleeve 20 to rotate synchronously. The external controller instructs the motor 32 to rotate at a specific angle according to preset fabric weight and width parameters. The ball screw assembly 35 converts the rotational motion of the motor 32 into linear displacement, pushing the slider 34 upward to lift the rigid shaft section 11b. Due to the presence of the spherical plain bearing 12, the entire mandrel 10 forms a smooth, upward convex arc, and the flexible roller sleeve 20 bends accordingly. The bent surface of the flexible roller sleeve 20 gently pushes away the wrinkles on the fabric from the middle to both sides. Because it is a pure rolling contact, the fabric surface remains smooth and undamaged.

[0044] like Figures 1-6 .

[0045] Example 2

[0046] The active flattening device in this embodiment has a structure that is basically the same as that in embodiment 1, but an active drive assembly 60 is added, including a synchronous motor and a conveyor belt system. The conveyor belt system includes several pulleys 61 and at least one belt 62. The pulleys 61 are fixedly connected to either end of the flexible roller sleeve 20. The output end of the synchronous motor is fixed to another pulley 61. The same belt 62 is sleeved between the two pulleys 61. Through the connection between the pulleys 61 and the belt 62, the synchronous motor output shaft and the flexible roller sleeve 20 rotate at the same speed.

[0047] In this embodiment, the length of the flexible roller sleeve 20 is longer than that of the flexible roller sleeve 20 in Embodiment 1, that is, the length of the flexible roller sleeve 20 is wider than the width of the unfolded fabric, so as to facilitate the installation of the active drive assembly 60.

[0048] The working process of this embodiment is as follows:

[0049] The external controller commands the synchronous motor in the active drive assembly 60 to drive the flexible roller sleeve 20 to rotate at a specified speed or a predetermined speed change pattern, so that the surface linear velocity and the fabric movement speed are strictly consistent at all times.

[0050] This active drive method ensures that even under extremely low tension (where passive friction may be insufficient), there will be no speed difference between the flexible roller sleeve 20 and the fabric, thus achieving the ultimate protection. Simultaneously, the external controller can be connected to a width sensor or a vision inspection system. Once a wrinkle is detected, the curvature actuation assembly 30 can be fine-tuned in real time and automatically, achieving intelligent and unmanned closed-loop control. Since the intelligent control system is not an improvement in this embodiment, it will not be described in detail.

[0051] like Figure 5 As shown, because the conveyor belt system is existing technology, Figure 5 The image shown is just an example and not all of it is drawn, but it does not affect the understanding of the entire technical solution.

[0052] Both Examples 1 and 2 mention the connection between several motors and the controller, because this is the most basic way to use motors. The controller controls the corresponding motor (motor 32, synchronous motor) to work at a specified speed and direction. Therefore, this utility model will not elaborate on this connection method.

[0053] In summary, this device has the following advantages:

[0054] 1. There is no relative linear velocity difference between the flexible roller sleeve and the fabric, which fundamentally eliminates the sliding friction that causes fabric scratches and pilling. It is especially suitable for processing high-value and highly sensitive materials such as silk, cashmere, and optical films.

[0055] 2. Employing high-precision drive assemblies such as servo motors, the physical bending curvature of the mandrel can be directly, quickly, and quantitatively adjusted. Closed-loop dynamic control can be performed based on real-time data of fabric material, width, and tension to achieve optimal flattening and avoid under-flattening or over-stretching.

[0056] 3. Whether driven passively or actively, the design of this invention ensures strict synchronization between the roller surface and the fabric linear speed. This minimizes the impact of the device on the operating tension of the production line (only enough to overcome the minor rolling resistance of the bearings), guaranteeing the stability of product dimensions.

[0057] 4. The core load-bearing components are all rigid metal parts and standard bearings, so there is no fatigue aging problem of elastic elements. The structure is stable, highly reliable, and has a long maintenance cycle.

[0058] 5. A single device, through program adjustment, can adapt to almost all types of winding materials, from ultra-thin films to heavy-duty canvases, making it extremely versatile.

[0059] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-quality anti-wrinkle printing and dyeing device for recycled fiber fabrics, characterized in that, include: The mandrel (10) is flexible along the longitudinal direction; The flexible roller sleeve (20) is mounted outside the mandrel (10) via a bearing assembly; The linear drive assembly (30) includes an abutment (31) and a control unit. The abutment (31) and the roller surface of the flexible roller sleeve (20) are in contact. The control unit is used to control the abutment (31) to move upward and push the spindle (10) to bend. The surface linear velocity of the flexible roller sleeve (20) is synchronized with the fabric movement speed.

2. The high-quality printing and dyeing anti-wrinkle device for recycled fiber fabrics according to claim 1, characterized in that, The mandrel (10) includes a number of rigid shaft segments (11), the number of which is an odd number and at least three. The three rigid shaft segments (11) are arranged along the axial direction, and adjacent rigid shaft segments (11) are connected by spherical plain bearings (12). The spherical plain bearings (12) allow rotation between the rigid shaft segments (11) to achieve overall bending of the mandrel (10).

3. The high-quality printing and dyeing anti-wrinkle device for recycled fiber fabrics according to claim 1, characterized in that, The control unit includes a motor (32), a slide rail (33), a slider (34), and a ball screw assembly (35). The slide rail (33) is connected to the frame. The motor (32) is mounted on the slide rail (33). The output shaft of the motor (32) is fixed to the screw. A nut is fitted on the screw. The nut is fixedly connected to the slider (34). The slider (34) slides vertically with the slide rail (33). An abutment (31) is rotatably connected to the slider (34). The surface of the abutment (31) is in contact with the surface of the flexible roller sleeve (20).

4. A high-quality printing and dyeing anti-wrinkle device for recycled fiber fabrics according to claim 3, characterized in that, The slider (34) is fixed with a limiting fork (36), the two arms of the limiting fork (36) extend obliquely to prevent the spindle (10) from bending laterally.

5. A high-quality printing and dyeing anti-wrinkle device for recycled fiber fabrics according to claim 1, characterized in that, The bearing assembly includes multiple sets of self-aligning bearings, with several bearings distributed axially along the spindle (10). The inner ring of the bearing is loosely fitted with the corresponding rigid shaft section (11), and the outer ring is tightly fitted with the flexible roller sleeve (20).

6. A high-quality printing and dyeing anti-wrinkle device for recycled fiber fabrics according to claim 1 or 5, characterized in that, The flexible roller sleeve (20) is a seamless metal tube with closed end faces. The outer surface of the metal tube is coated with polyurethane. Both ends are connected to the frame through seated spherical bearings (13), which allows the spindle (10) to provide oscillation compensation when it bends.

7. A high-quality printing and dyeing anti-wrinkle device for recycled fiber fabrics according to claim 1, characterized in that, The fabric contacts the flexible roller sleeve (20) with a wrap angle greater than 90 degrees, and the flexible roller sleeve (20) drives the fabric to rotate by friction. or, It also includes an active drive assembly (60), which includes a synchronous motor and a conveyor belt system, wherein the synchronous motor drives the flexible roller sleeve (20) to rotate via the conveyor belt system to match the movement speed of the fabric.

8. A high-quality printing and dyeing anti-wrinkle device for recycled fiber fabrics according to claim 1, characterized in that, The mandrel (10) has a feed roller (40) at the feed end and a discharge roller (50) at the discharge end. The fabric is laid along the direction of the feed roller (40), the flexible roller sleeve (20), and the discharge roller (50).

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