Inclined weft bending adjustment mechanism and dyeing and finishing machine

Abstract

The utility model provides a kind of weft skew weft bend adjusting mechanism and dyeing and finishing machine, belong to cloth dyeing and finishing technical field, including two mountings, rotating frame and drive assembly;Two mountings are oppositely spaced and fixed in the rack cloth inlet end of dyeing and finishing machine;Rotating frame is horizontally rotationally connected between two mountings, and there are several rotating rollers in circumferential array distribution, each rotating roller is respectively applicable to the different weft skew weft bend form of cloth roller pressing adjustment;Drive assembly is located in mounting, and is transmission connection with rotating frame and each rotating roller;Wherein, drive assembly is used to drive each rotating roller synchronous rotation, also for driving rotating frame to rotate to select the rotating roller suitable for current weft skew weft bend form and carry out cloth roller pressing.The weft skew weft bend adjusting mechanism provided by the utility model is compact in overall structure, compared with the mode that rotating roller is driven by cloth friction force and passively rotates, can avoid the rotating instability problem caused by insufficient power of rotating roller, help to improve wefting efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of fabric dyeing and finishing technology, specifically relating to a weft slant and weft bend adjustment mechanism and a dyeing and finishing machine. Background Technology

[0002] During the dyeing and finishing process, fabrics are constantly under traction and affected by various mechanical movements and production operations, which often results in weft yarn skew and bending. This phenomenon is commonly referred to as weft skew in the industry. The basic types of weft skew are straight and curved. If weft skew is not corrected in time, it will seriously affect product quality, especially in striped or checkered fabrics and yarn-dyed fabrics, where the deformation is more pronounced.

[0003] Weft straighteners are currently the most common devices for correcting weft skew. Through mechanical action, they adjust the relative speeds of the warp yarns in the fabric, causing the corresponding skewed portion of the weft yarn to lead or lag behind, thus restoring the weft and warp yarns to intersect perpendicularly across the entire width. Specifically, straight weft skew is adjusted by adjusting the tilt angle of skewed rollers, while curved or concave-convex rollers adjust arc-shaped weft skew. However, the overall structure is not compact enough, and since most existing weft straightening mechanisms rely on the friction of the fabric to passively rotate the rollers, the rotational stability of the rollers cannot be precisely controlled, resulting in low weft skew adjustment efficiency. Consequently, large sections of skewed fabric often remain after dyeing and finishing. Given these practical problems, developing new solutions for weft skew adjustment in the fabric dyeing and finishing process is essential. Utility Model Content

[0004] This utility model provides a weft tilt and weft bend adjustment mechanism and a dyeing and finishing machine, which aims to improve the structural compactness and weft adjustment efficiency of the weft adjustment mechanism.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: Firstly, a weft skew and weft bend adjustment mechanism is provided, comprising two mounting seats, a rotating frame, and a drive assembly; the two mounting seats are fixedly and relatively spaced at the fabric inlet end of the frame of a dyeing and finishing machine; the rotating frame is horizontally rotatably connected between the two mounting seats, and a plurality of rotating rollers are distributed in a circumferential array, each rotating roller being suitable for roller pressing and adjusting different weft skew and weft bend shapes of the fabric; the drive assembly is located on the mounting seats and is connected to the rotating frame and each rotating roller for transmission; wherein, the drive assembly is used to drive each rotating roller to rotate synchronously, and is also used to drive the rotating frame to rotate in order to select the rotating roller suitable for the current weft skew and weft bend shape to roller press the fabric.

[0006] In conjunction with the first aspect, in one possible implementation, each of the rotating rollers is a straight roller, a convex roller, a concave roller, a first conical roller, and a second conical roller; wherein, the straight roller is used to roll the fabric when there is no weft skew; the convex roller is used to roll the fabric when there is an advanced weft skew; the concave roller is used to roll the fabric when there is a delayed weft skew; the first conical roller and the second conical roller are both used to roll the fabric when there is a weft skew, and the two have equal tapers and opposite taper directions.

[0007] In some embodiments, the drive assembly includes a first rotary drive member and a second rotary drive member; the first rotary drive member is disposed on one of the mounting bases and its output end is coaxially connected to the rotating frame; the second rotary drive member is disposed on the other mounting base and its output end is respectively connected to each of the rotating rollers for transmission.

[0008] For example, a transmission box is provided at the end of the rotating frame near the second rotating drive member. The transmission box has a power input end and multiple power output ends. The power input end is coaxially connected to the output end of the second rotating drive member, and each power output end is connected to each rotating roller respectively.

[0009] For example, a central gear and multiple peripheral gears are rotatably connected inside the transmission box. Each peripheral gear is circumferentially spaced around the central gear and meshes with it. The gear shaft of the central gear extends out of the transmission box to form a power input end. The gear shafts of each peripheral gear extend out of the transmission box to form one of the power output ends.

[0010] In one possible implementation, the rotating frame has a movable shaft and a fixed shaft at its two ends respectively; the fixed shaft is rotatably connected to one of the mounting seats and connected to the output end of the first rotary drive; the gear shaft of the central gear is rotatably connected to the other mounting seat as a movable shaft.

[0011] In some embodiments, the first rotary drive includes a first motor, a first synchronous pulley, a second synchronous pulley, and a first synchronous belt; the first motor is fixed to the mounting base and its output end is sleeved and fixed to the first synchronous pulley, and the second synchronous pulley is sleeved and fixed to the fixed shaft and connected to the first synchronous pulley through the first synchronous belt.

[0012] For example, the second rotary drive includes a second motor, a third synchronous pulley, a fourth synchronous pulley, and a second synchronous belt; the second motor is fixed to the mounting base and its output end is sleeved and fixed to the third synchronous pulley; a one-way bearing is embedded in the center of the fourth synchronous pulley and the one-way bearing is sleeved on the movable shaft; the third synchronous pulley and the fourth synchronous pulley are connected by the second synchronous belt.

[0013] For example, the rotating frame includes a first end plate, a second end plate, and a crossbeam. The two ends of the crossbeam are fixed to the centers of the first end plate and the second end plate, respectively. The two ends of each rotating roller are rotatably connected to the first end plate and the second end plate, respectively.

[0014] The beneficial effects of the weft skew and weft curvature adjustment mechanism provided by this utility model are as follows: Compared with the prior art, the weft skew and weft curvature adjustment mechanism of this utility model has two mounting seats fixed at the fabric inlet end of the dyeing and finishing machine frame. For various weft skew and weft curvature shapes that may occur before dyeing and finishing, multiple rotating rollers, each suitable for different weft skew and weft curvature shapes, are integrated on the rotating frame. The appropriate roller can be selected to adjust the fabric by rotating the frame according to the current weft skew and weft curvature shape, thereby greatly improving the overall structural compactness. Since the driving component can drive each roller to rotate synchronously, the rotation of the rollers does not depend on the friction of the fabric. This not only avoids excessive friction between the rollers and the fabric, which could cause warp yarn wear or even breakage, but also ensures that the rollers rotate at a stable speed, thus ensuring that the current weft skew and weft curvature shape of the fabric can be adjusted in a timely manner. Compared with passive rotation, this avoids the rollers becoming unstable due to insufficient power, which helps improve weft straightening efficiency.

[0015] Secondly, this utility model embodiment also provides a dyeing and finishing machine, including the above-mentioned weft slant and weft bend adjustment mechanism.

[0016] The beneficial effects of the dyeing and finishing machine provided by this utility model are as follows: Compared with the prior art, the dyeing and finishing machine of this utility model adopts the above-mentioned weft skew and weft curvature adjustment mechanism. For various weft skew and weft curvature shapes that may occur before fabric dyeing and finishing, multiple rotating rollers, each suitable for adjusting different weft skew and weft curvature shapes, are integrated on the rotating frame. The corresponding roller can be selected to adjust the fabric by driving the rotating frame to rotate according to the current weft skew and weft curvature shape, thereby greatly improving the overall structural compactness. Since the driving component can drive each roller to rotate synchronously, the rotation of the rollers does not depend on the friction of the fabric. This not only avoids excessive friction between the rollers and the fabric, which could lead to warp yarn wear or even breakage, but also ensures that the rollers rotate at a stable speed, thus ensuring that the current weft skew and weft curvature shape of the fabric can be adjusted in a timely manner. Compared with passive rotation, this avoids the rollers becoming unstable due to insufficient power, which helps improve weft straightening efficiency. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of the weft skewing and bending adjustment mechanism provided in an embodiment of this utility model; Figure 2 An exploded structural diagram of the weft skewing and weft bending adjustment mechanism provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of the internal structure of the transmission box used in the embodiment of this utility model; Figure 4This is a schematic diagram of the structure of the first rotary drive component used in an embodiment of the present invention.

[0018] In the diagram: 10, mounting base; 20, rotating frame; 200, rotating roller; 201, straight roller; 202, convex roller; 203, concave roller; 204, first conical roller; 205, second conical roller; 21, first end plate; 211, movable shaft; 22, second end plate; 221, fixed shaft; 23, crossbeam; 31, first rotary drive component; 311, first motor; 312, first synchronous pulley; 313, second synchronous pulley; 314, first synchronous belt; 32, second rotary drive component; 321, second motor; 322, third synchronous pulley; 323, fourth synchronous pulley; 324, second synchronous belt; 325, one-way bearing; 40, transmission box; 41, central gear; 42, peripheral gear. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0021] Please refer to the following: Figures 1 to 4Now, the weft skew and weft bend adjusting mechanism provided by the present utility model will be described. The weft skew and weft bend adjusting mechanism comprises two mounting seats 10, a rotating frame 20 and a driving assembly; the two mounting seats 10 are fixed at the cloth inlet end of the frame of the dyeing and finishing machine at opposite intervals; the rotating frame 20 is horizontally and rotatably connected between the two mounting seats 10, and a plurality of rotating rollers 200 are distributed in a circumferential array, and each rotating roller 200 is respectively suitable for rolling and adjusting different weft skew and weft bend forms of the fabric; the driving assembly is arranged on the mounting seat 10 and is in transmission connection with the rotating frame 20 and each rotating roller 200; wherein the driving assembly is used for driving each rotating roller 200 to rotate synchronously, and is also used for driving the rotating frame 20 to rotate to select the rotating roller 200 suitable for the current weft skew and weft bend form to roll the fabric.

[0022] It should be noted that, in order to reduce the frictional force between the fabric and the rotating rollers 200, in this embodiment, the speed at which the driving assembly drives each rotating roller 200 to rotate matches the cloth feeding speed of the dyeing and finishing machine, so that each rotating roller 200 rolling on the fabric is equivalent to applying different supporting forces to the corresponding positions of the fabric by using the diameter variation at different axial positions of the rotating roller 200, thereby changing the path length of the fabric entering the dyeing and finishing machine.

[0023] Specifically, when the fabric has weft skew, the path of the leading area is elongated, and the path of the lagging area remains unchanged. In this way, the leading area can be gradually pulled back to a state flush with the lagging area, thereby completing the weft straightening. The structural difference of each rotating roller 200 in this embodiment lies in that the parts capable of realizing the above-mentioned path elongation function are different. For example, the rotating roller 200 for adjusting linear weft skew may be gradually thickened or thinned from one end to the other end, and the rotating roller 200 for adjusting middle bend may be in a structural form of thin middle and thick two ends, or thick middle and thin two ends; of course, in order to ensure the stability of cloth feeding when there is no weft skew, one of the rotating rollers 200 may adopt a conventional straight roller 201 structure.

[0024] It should be understood that whether the fabric has weft skew and what type of the occurred weft skew is can be judged by a detection system (such as a visual detection system, a light spot detection system) matched with the dyeing and finishing machine, and the whole machine control system controls the driving assembly to drive the rotating frame 20 to rotate according to the judgment result of the detection system, so that the target rotating roller 200 rolls the fabric. Both the detection system and the control system are conventional means that have been popularized in the field of dyeing and finishing, so they will not be described in detail here.

[0025] Compared with the prior art, the weft skew and weft bend adjustment mechanism provided in this embodiment has two mounting bases 10 fixed at the fabric inlet end of the dyeing and finishing machine frame. For various weft skew and weft bend shapes that may occur before the fabric is dyed and finished, multiple rotating rollers 200, which are respectively suitable for roller pressing and adjusting different weft skew and weft bend shapes, are integrated on the rotating frame 20. The corresponding rotating roller 200 can be selected to adjust the fabric by driving the rotating frame 20 to rotate according to the current weft skew and weft bend shape, thereby greatly improving the overall structural compactness. Since the drive assembly can drive each roller 200 to rotate synchronously, the rotation of the roller 200 does not depend on the friction of the fabric. This not only avoids excessive friction between the roller 200 and the fabric, which could cause warp yarn wear or even breakage, but also ensures that the roller 200 rotates at a stable speed. This ensures that the current weft skew and weft curvature of the fabric can be adjusted in a timely manner. Compared with passive rotation, this avoids the roller 200 from becoming unstable due to insufficient power (if it slips during rotation, it will lose its weft straightening function), which helps to improve weft straightening efficiency.

[0026] In some embodiments, see Figure 2 Each of the rotating rollers 200 is a straight roller 201, a convex roller 202, a concave roller 203, a first conical roller 204, and a second conical roller 205. The straight roller 201 is used to roll the fabric when there is no weft skew or weft bend. The convex roller 202 is used to roll the fabric when there is an advanced weft bend. The concave roller 203 is used to roll the fabric when there is a backward weft bend. The first conical roller 204 and the second conical roller 205 are both used to roll the fabric when there is a weft skew, and their tapers are equal and opposite in direction.

[0027] The function of the straight roller 201 is to apply pressure to the fabric in the absence of weft skew or weft bending, thereby achieving uniform tension across the entire width of the fabric. This improves the stability of the fabric feeding in the dyeing and finishing machine and helps reduce the probability of weft skew or weft bending.

[0028] The convex roller 202 has a structure with a diameter that gradually decreases from the middle to both ends. Its function is to deal with the situation where the weft yarn bends ahead in the middle area of ​​the fabric. When the convex roller 202 rolls the fabric, the relatively thicker middle area provides rolling support to the middle area of ​​the fabric, which lengthens the path of this area into the dyeing and finishing machine, thereby gradually pulling back the ahead part.

[0029] The concave roller 203 has a structure in which the diameter gradually increases from the middle to both ends. Its function is to deal with the situation where the weft yarn bends backward in the middle area of ​​the fabric. The specific working mechanism is the same as that of the convex roller 202. That is, when the concave roller 203 rolls the fabric, the thicker area at both ends of the concave roller 203 provides rolling support to the edge area of ​​the fabric, thereby lengthening the path of this area into the dyeing and finishing machine and pulling back the advanced part.

[0030] The first tapered roller 204 is used when the first end of the weft yarn is tilted ahead of the second end. In this case, the large diameter section of the first tapered roller 204 acts on the side of the fabric where the weft yarn is ahead, which lengthens the path of the fabric into the dyeing and finishing machine on that side, thereby gradually pulling back the ahead weft yarn. The second tapered roller 205 is the opposite of the first tapered roller 204. It can deal with the situation where the first end of the weft yarn is tilted behind the second end. In this case, the second tapered roller 205 can also pull back the ahead weft yarn by rolling the fabric.

[0031] The above five types of roller 200 structures can basically cope with common weft skew and weft bend patterns. The overall structure is not only highly compact, but also has strong weft straightening ability and high efficiency.

[0032] For some possible implementations, please refer to [link / reference]. Figure 1 The drive assembly includes a first rotary drive component 31 and a second rotary drive component 32. The first rotary drive component 31 is disposed on one of the mounting bases 10, and its output end is coaxially connected to the rotating frame 20. The second rotary drive component 32 is disposed on the other mounting base 10, and its output end is respectively connected to each of the rotating rollers 200 via transmission. The drive assembly is actually two rotary power sources. Here, the first rotary drive component 31 and the second rotary drive component 32 are placed on two separate mounting bases 10, which simplifies the structural layout and helps to avoid transmission interference problems.

[0033] Specifically, such as Figure 3 As shown, in this embodiment, the end of the rotating frame 20 near the second rotating drive member 32 is provided with a transmission box 40. The transmission box 40 has a power input end and multiple power output ends. The power input end is coaxially connected to the output end of the second rotating drive member 32, and each power output end is connected to each rotating roller 200 respectively.

[0034] The function of the transmission box 40 is to transmit the motion of the power output end synchronously to each power output end through its internal transmission components. This allows each power output end to drive each roller 200 to rotate synchronously. In this way, each roller 200 can be driven to rotate synchronously through the same second rotary drive 32. Although only one roller 200 is engaged with the fabric during actual operation, while the other rollers 200 are essentially idling, this arrangement is more conducive to ensuring the consistency of the rotational speed of each roller 200. By simply controlling the speed of the second rotary drive 32, it is possible to ensure that each roller 200 can match the feed speed, thereby reducing the difficulty of motion control for each roller 200.

[0035] For example, please refer to Figure 3The aforementioned transmission box 40 is rotatably connected to a central gear 41 and multiple peripheral gears 42. Each peripheral gear 42 is circumferentially spaced around the central gear 41 and meshes with the central gear 41. The gear shaft of the central gear 41 extends out of the transmission box 40 to form a power input end. The gear shafts of each peripheral gear 42 extend out of the transmission box 40 to form one of the power output ends.

[0036] The power of the second rotary drive 32 is directly transmitted to the central gear 41, which drives each outer peripheral gear 42 to rotate synchronously. Finally, the gear shafts of each outer peripheral gear 42 drive the corresponding roller 200 to rotate. This not only has a simple and compact structure, but also a smooth transmission, which helps to improve the rotational synchronization of each roller 200, thereby ensuring that any roller 200 can maintain its matching with the advance speed when it acts on the fabric.

[0037] Please combine Figures 2 to 4 In this embodiment, the rotating frame 20 has a movable shaft 211 and a fixed shaft 221 at its two ends respectively; the fixed shaft 221 is rotatably connected to one of the mounting seats 10 and connected to the output end of the first rotating drive member 31; the gear shaft of the central gear 41 is rotatably connected to the other mounting seat 10 as the movable shaft 211.

[0038] The first rotary drive 31 is connected to the fixed shaft 221, which can directly transmit its rotational power to the rotating frame 20 through the fixed shaft 221, thereby driving the rotating frame 20 to rotate and select the target roller 200. The other end of the rotating frame 20 is connected to the mounting base 10 by using the gear shaft of the central gear 41 as the movable shaft 211. When the rotating frame 20 rotates to the position, the second rotary drive 32 drives the movable shaft 211 to rotate and transmits the power to the central gear 41, thus realizing the synchronous rotation of each roller 200. Therefore, in this embodiment, the gear shaft of the central gear 41 not only has the function of transmitting power between the second rotary drive 32 and the central gear 41, but also has the function of connecting and supporting the rotating parts, which is conducive to improving the structural compactness.

[0039] Optionally, the structure of the first rotary drive 31 in this embodiment is as follows: Figure 4 As shown, the first rotary drive component 31 includes a first motor 311, a first synchronous pulley 312, a second synchronous pulley 313, and a first synchronous belt 314; the first motor 311 is fixed to the mounting base 10 and its output end is sleeved and fixed to the first synchronous pulley 312, and the second synchronous pulley 313 is sleeved and fixed to the fixed shaft 221 and connected to the first synchronous pulley 312 through the first synchronous belt 314.

[0040] The first motor 311 can be a servo motor or a stepper motor. The circumferential distribution of each roller 200 is equally spaced. For example, in the case of five rollers 200 mentioned above, the circumferential interval between adjacent rollers 200 is 72 degrees. The first motor 311 can rotate the target roller 200 to the position for rolling the fabric by controlling its output rotation angle. Specifically, the first motor 311 drives the first synchronous pulley 312 to rotate, and the first synchronous pulley 312 drives the second synchronous pulley 313 to rotate through the first synchronous belt 314. Finally, the second synchronous pulley 313 drives the fixed shaft 221 to rotate, thereby realizing the rotation of the rotating frame 20. Using synchronous belt drive helps to improve transmission accuracy, thereby ensuring the rotation angle accuracy of the rotating frame 20.

[0041] As an optional structural form of the second rotary drive member 32 described above, please refer to Figure 3 The second rotary drive component 32 includes a second motor 321, a third synchronous pulley 322, a fourth synchronous pulley 323, and a second synchronous belt 324. The second motor 321 is fixed to the mounting base 10 and its output end is sleeved and fixed to the third synchronous pulley 322. A one-way bearing 325 is embedded in the center of the fourth synchronous pulley 323, and the one-way bearing 325 is sleeved on the movable shaft 211. The third synchronous pulley 322 and the fourth synchronous pulley 323 are connected by the second synchronous belt 324.

[0042] The second motor 321 can be a servo motor or a stepper motor, thereby obtaining the required rotation angle of the rotating frame 20 by controlling the rotation angle of the controller. The one-way bearing 325, also known as an overrunning clutch, is a type of bearing that can rotate freely in one direction and is locked in the other. When the second motor 321 drives the third synchronous pulley 322, and then drives the fourth synchronous pulley 323 to rotate through the second synchronous belt 324, the one-way bearing 325 can use its clockwise locking to transmit power to the movable shaft 211, thereby causing the movable shaft 211 to drive the central gear 41 to rotate and realize the rotation drive of each roller 200. When the rotating frame 20 rotates, the meshing force between the peripheral gear and the central gear 41 will cause the movable shaft 211 to rotate synchronously with the rotating frame 20. At this time, the one-way bearing 325 can be used to prevent the fourth synchronous pulley 323 from rotating with the movable shaft 211, thereby avoiding the reverse rotation of the second motor 321 and increasing the rotational resistance of the rotating frame 20.

[0043] For example, such as Figure 2As shown, the rotating frame 20 includes a first end plate 21, a second end plate 22, and a crossbeam 23. The two ends of the crossbeam 23 are fixed to the centers of the first end plate 21 and the second end plate 22, respectively. The two ends of each rotating roller 200 are rotatably connected to the first end plate 21 and the second end plate 22, respectively. Using the crossbeam 23 to connect the first end plate 21 and the second end plate 22 avoids the rotating rollers 200 from bearing additional loads and bending, thus ensuring the weft straightening effect.

[0044] Specifically, such as Figure 3 As shown, the transmission box 40 is fixedly connected to the side of the first end plate 21 facing away from the second end plate 22. Integrating the transmission box 40 with the first end plate 21 not only helps to improve the structural strength of the transmission box 40, but also helps to improve the overall structural compactness.

[0045] Based on the same inventive concept, combined with Figures 1 to 4 It is understood that this application embodiment also provides a dyeing and finishing machine, including the above-mentioned weft slant and weft bend adjustment mechanism.

[0046] Compared with the prior art, the dyeing and finishing machine provided in this embodiment adopts the aforementioned weft skew and weft curvature adjustment mechanism. For various weft skew and weft curvature patterns that may occur before fabric dyeing and finishing, multiple rotating rollers 200, each suitable for adjusting different weft skew and weft curvature patterns, are integrated on the rotating frame 20. The corresponding rotating roller 200 can be selected to adjust the fabric by rotating the rotating frame 20 according to the current weft skew and weft curvature pattern, thereby greatly improving the overall structural compactness. Since the driving component can drive each rotating roller 200 to rotate synchronously, the rotation of the rotating roller 200 does not depend on the friction of the fabric. This not only avoids excessive friction between the rotating roller 200 and the fabric, which could lead to warp yarn wear or even breakage, but also ensures that the rotating roller 200 rotates at a stable speed, thus ensuring that the current weft skew and weft curvature of the fabric can be adjusted in a timely manner. Compared with passive rotation, this avoids the rotating roller 200 becoming unstable due to insufficient power, helping to improve weft straightening efficiency.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A weft slant / bend adjustment mechanism, characterized in that, include: Two mounting bases are fixed at a relative interval to the fabric inlet end of the dyeing and finishing machine frame; A rotating frame is horizontally rotatably connected between the two mounting bases, and several rotating rollers are distributed in a circular array. Each of the rotating rollers is suitable for roller pressing to adjust different weft skew and weft bend shapes of the fabric. A drive assembly is disposed on the mounting base and is connected to the rotating frame and each of the rotating rollers via a transmission. The drive assembly is used to drive each of the rollers to rotate synchronously, and also to drive the rotating frame to rotate in order to select the roller suitable for the current weft skew and weft bend shape to roll the fabric.

2. The weft skew and weft curve adjustment mechanism as described in claim 1, characterized in that, Each of the rollers is a straight roller, a convex roller, a concave roller, a first conical roller, and a second conical roller; wherein, the straight roller is used to roll the fabric when there is no weft skew or weft bend; the convex roller is used to roll the fabric when there is an advanced weft bend; the concave roller is used to roll the fabric when there is a delayed weft bend; the first conical roller and the second conical roller are both used to roll the fabric when there is a weft skew, and the two have equal tapers and opposite taper directions.

3. The weft skew and weft curve adjustment mechanism as described in claim 1, characterized in that, The drive assembly includes a first rotary drive and a second rotary drive; the first rotary drive is disposed on one of the mounting bases and its output end is coaxially connected to the rotating frame; the second rotary drive is disposed on the other mounting base and its output end is respectively connected to each of the rotating rollers for transmission.

4. The weft skew and weft curve adjustment mechanism as described in claim 3, characterized in that, The rotating frame is provided with a transmission box near the end of the second rotating drive member. The transmission box has a power input end and multiple power output ends. The power input end is coaxially connected to the output end of the second rotating drive member, and each of the power output ends is respectively connected to each of the rotating rollers.

5. The weft skew and weft curve adjustment mechanism as described in claim 4, characterized in that, The transmission box is rotatably connected to a central gear and multiple peripheral gears. Each of the peripheral gears is circumferentially spaced around the outer periphery of the central gear and meshes with the central gear. The gear shaft of the central gear extends out of the transmission box to form the power input end; the gear shafts of each of the outer peripheral gears extend out of the transmission box to form one of the power output ends.

6. The weft skew and weft curve adjustment mechanism as described in claim 5, characterized in that, The rotating frame has a movable shaft and a fixed shaft at both ends; the fixed shaft is rotatably connected to one of the mounting seats and connected to the output end of the first rotating drive component; the gear shaft of the central gear is rotatably connected to the other mounting seat as the movable shaft.

7. The weft skew and weft curve adjustment mechanism as described in claim 6, characterized in that, The first rotary drive component includes a first motor, a first synchronous pulley, a second synchronous pulley, and a first synchronous belt; the first motor is fixed to the mounting base and its output end is sleeved and fixed to the first synchronous pulley, and the second synchronous pulley is sleeved and fixed to the fixed shaft and connected to the first synchronous pulley through the first synchronous belt.

8. The weft skew and weft curve adjustment mechanism as described in claim 6, characterized in that, The second rotary drive component includes a second motor, a third synchronous pulley, a fourth synchronous pulley, and a second synchronous belt; the second motor is fixed to the mounting base and its output end is sleeved and fixed to the third synchronous pulley; a one-way bearing is embedded in the center of the fourth synchronous pulley, and the one-way bearing is sleeved on the movable shaft; the third synchronous pulley and the fourth synchronous pulley are connected by the second synchronous belt.

9. The weft slant and weft curve adjustment mechanism as described in any one of claims 1-8, characterized in that, The rotating frame includes a first end plate, a second end plate, and a crossbeam. The two ends of the crossbeam are fixed to the centers of the first end plate and the second end plate, respectively. The two ends of each of the rotating rollers are rotatably connected to the first end plate and the second end plate, respectively.

10. A dyeing and finishing machine, characterized in that, Includes the weft tilt and weft curve adjustment mechanism as described in any one of claims 1-9.

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