A variable sheathing mechanism and a loom having the sheathing mechanism

Abstract

This invention provides a variable heddle frame mechanism, comprising a first heddle frame connected to a first motor via a first traction rope, capable of moving along a guide rail under the drive of the first motor; and a second heddle frame connected to a second motor via a second traction rope, capable of moving along the guide rail under the drive of the second motor. The first and second motors are configured to rotate in opposite directions to drive the first and second heddle frames to move in opposite directions, thereby forming a shed. This solution uses a traction rope to pull the heddle frames, enabling real-time adjustment of the heddle frame movement parameters. This allows for the adjustment of the shed opening size during the weaving process based on changes in the weaving technology, thus meeting the requirements of the weaving process.

Description

Technical Field

[0001] This invention relates to the field of textile machinery, and more particularly to a variable selvage mechanism and a loom having the selvage mechanism. Background Technology

[0002] The weaving process on a textile machine primarily utilizes the alternating weaving of warp and weft yarns to form textiles. A mechanical structure causes at least two warp yarns to cross vertically, creating a shed between them. A shuttle wound with weft yarn then moves back and forth within the shed, trapping the weft yarn between the two warp yarns, forming an interwoven warp and weft pattern. This process is repeated multiple times to ultimately form the textile. Edge-weaving machines are used to weave the edges of fabrics. These edges are typically wider, and different weaving parameters require adjustment depending on the weaving process and pattern requirements. For example, the size of the shed needs to be adjusted to accommodate shuttles of different sizes and the passage of weft yarns. However, current technology typically only designs fixed mechanical structures to actuate the yarns, resulting in a fixed shed size. This prevents flexible adjustment of the shed size according to process requirements, limiting its applicability to various weaving processes and patterns, thus limiting its versatility.

[0003] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this invention, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that the present invention does not possess the features of these prior art. On the contrary, the present invention already possesses all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Summary of the Invention

[0004] To enable timely locking of weft yarns with different weaving structures and to allow the selvage heddles to pass through the shed more easily, existing technologies have developed selvage devices that adjust the positions of the heddles through reciprocating motion. For example, patent document CN110168156A discloses a selvage device comprising at least two pairs of heddle clamps for holding the heddles on both sides, and a drive device for driving the two pairs of heddle clamps through reciprocating motion. The drive device includes at least two drive bodies, and each pair of heddle clamps is attached to a drive body. At least one heddle clamp in each pair is attached to a corresponding drive body, allowing its height to be adjusted relative to that drive body. However, in this technical solution, adjacent heddles are connected to the same rotating motor. In this case, the adjustment relationship between the heddles is equivalent to a follow-up adjustment relationship. The rotation of the motor can only adjust the positional relationship between two heddles simultaneously, and the shed size formed by the staggered positions of the two heddles cannot be adaptively adjusted according to different sizes of shuttles and weft yarns. Furthermore, the adjustment component used to connect the heald frame structure in this technical solution is a rigid drive rod structure, which is completely opposite to the flexible traction rope structure used to connect the frame structure in this invention. Since the rigid drive rod structure in this technical solution is connected to the same motor, the consistency of movement can only be ensured by setting components that cannot produce large deformations. Based on this, the above-mentioned prior art provides a technical teaching completely opposite to that of this invention, in which the drive component cannot be adjusted according to the parameters of the motor to obtain the heald frame position relationship adjustment process adapted to different shed sizes. In view of the shortcomings of the prior art, this invention provides a variable opening selvage mechanism, including a first heald frame, connected to a first motor via a first traction rope, and capable of moving along a guide rail under the drive of the first motor; a second heald frame, connected to a second motor via a second traction rope, and capable of moving along a guide rail under the drive of the second motor; the first motor and the second motor are configured to rotate in opposite directions to drive the first heald frame and the second heald frame to move in opposite directions, thereby forming a shed.

[0005] Existing technologies have already developed solutions for forming a shed by using yarn guide elements with opposite directions of motion. For example, patent document CN101906694A discloses a selvage device for a loom, which includes at least a first yarn guide element and a second yarn guide element for guiding the selvage thread to form a shed. The two yarn guide elements move back and forth in opposite directions via a drive mechanism, which includes a first drive wheel and a second drive wheel connected to a drive motor. The outer end faces of the two drive wheels are eccentrically hinged to one end of a first connecting rod and one end of a second connecting rod, respectively. The other ends of the first and second connecting rods are respectively hinged to the first and second yarn guide elements. The first and second yarn guide elements are guided and slidably disposed in a carriage, so as to be driven to move up and down relative to each other by a unidirectional rotating drive motor. This technical solution uses two first and second drive gears that simultaneously mesh with the main drive gear to drive the two yarn guide elements to move back and forth along a straight slide, thereby forming a shed for the selvage thread. However, in this technical solution, the yarn guide elements used to perform opposite-direction movements are all connected to the same drive device. This is equivalent to achieving the reciprocating motion of two yarn guide elements in different directions through the same-direction rotation of a single drive device. In this case, meshing transmission components are required to achieve the above objective. However, the transmission components meshing with the main drive gear also have a follow-up adjustment relationship, making it impossible to adaptively adjust according to different sizes of shuttles and weft yarns. Furthermore, the adjustment components used to connect the yarn guide elements in this technical solution are rigid linkage structures. This type of connection component is completely opposite to the flexible traction rope structure used to connect the frame structure in this invention. Since the driving force of the rigid linkage structure in this technical solution essentially comes from a single motor, changes in the parameters of a single motor can only be transmitted through a rigid connection structure; otherwise, the consistency of movement of different yarn guide elements cannot be guaranteed, thus making the shed size unstable. In contrast, the heald frame of this invention can be connected to different motors, thereby providing a heald frame movement state that can be adjusted according to motor parameters, so as to adaptively adjust the shed size formed between different heald frames according to different sizes of shuttles and weft yarns. The essence of the above-mentioned prior art is to ensure the stability of movement between different heddles, but it cannot solve the problem of adjusting the shed according to different weaving requirements of the fabric. Based on this, those skilled in the art would not use the above-mentioned prior art or its combination to solve the technical problem of the present invention.

[0006] Preferably, the first traction rope and the second traction rope are respectively connected to the first motor and the second motor via lifting rollers, and the lifting rollers rotate along with the electrodes.

[0007] This invention provides separate drives for the first and second traction ropes, enabling both ropes to be actively driven to perform actions. The choice of motor drive allows for stepless adjustment of the rope's range of motion, better adapting to the precise needs of stoma care. The independent active driving and adjustment of the two traction ropes allows for more relative motion modes, making the stoma movement more adaptable to the different edging requirements proposed in this invention.

[0008] Preferably, the first and second motors are configured to have adjustable rotational speeds and rotational revolutions, thereby allowing adjustment of the shed opening size and formation time. Compared to the prior art, the present invention can form different shed parameters by adjusting the motor parameters. Based on the aforementioned distinguishing technical features, the problem to be solved by the present invention can include: how to adaptively adjust the shed parameters formed between the heald frames according to different weaving requirements of the fabric, so as to improve selvage weaving efficiency and weaving effect. Specifically, the operating parameters of the motors in the present invention can be adjusted, including the adjustment of the forward and reverse rotation speeds of the motors, thereby adjusting the shed formation time by controlling the forward and reverse rotation speeds of the two motors; simultaneously, the size of the shed formation is controlled by controlling the number of rotations of each of the two motors, that is, by adjusting the operating parameters of the motors, the movement of the heald frames is further controlled, thereby achieving the purpose of adjusting the shed size and formation time based on actual weaving needs.

[0009] Preferably, the mechanism further includes a support unit for mounting the entire mechanism onto the loom. The support unit includes an upper cantilever, a lower support column, and a lower cantilever. The upper cantilever is connected to the lower cantilever via the lower support column. A slide rail is provided on the lower support column, and the guide rail is connected to the slide rail.

[0010] The present invention provides a slide rail on the lower support column, so that the heald frame connected to the slide rail can move stably in the vertical direction under the limitation of the slide rail. Since the shed making movement is in the vertical direction, the slide rail in this solution is designed to avoid horizontal movement (such as swaying), thereby avoiding the problem of poor weaving effect caused by horizontal movement.

[0011] Preferably, the upper cantilever is provided with a platform for installing the motor and lifting rollers at the end away from the lower support column. The first heddle frame and the second heddle frame are located between the guide rails at the position of the lower support column. A first roller, an adjusting roller, and a second roller are sequentially arranged on the upper cantilever along the direction from the end near the motor to the end near the heddle frame. The traction rope passes around the first roller, the adjusting roller, and the second roller in sequence and is connected to the heddle frame.

[0012] This invention imposes structural restrictions on the movement path of the traction rope. By restricting it with three rollers, the traction rope can form multiple contact points on the rollers. These multiple contact points create tension on the traction rope, making its movement more stable. More importantly, its tension during movement can be adjusted as needed.

[0013] Preferably, the traction rope is wound in a V-shaped manner around the first roller, the adjusting roller, and the second roller in sequence.

[0014] The traction rope is wound in such a way that it forms contact points on several rollers, and these contact points create wrap angles. The wrap angle is the central angle corresponding to the arc of the contact point. The wrap angle can be changed by altering the position of the contact points and the length of the contact arc, and a change in the wrap angle implies a change in the tension of the traction rope.

[0015] Preferably, the adjusting roller includes an adjusting wheel body, a slide groove, a support, and an adjusting nut. One end of the wheel axle of the adjusting wheel body is disposed in the slide groove so that the adjusting wheel body can move within the slide groove. The support is used to connect the adjusting roller to the upper cantilever. The adjusting nut is disposed in the slide groove to adjust the length by which the adjusting wheel body can move within the slide groove.

[0016] Preferably, at least one heddle wire is provided in the heddle frame, and heddle wire eye is provided on the heddle wire. At least two parts of the textile warp thread pass through the heddle wire eye of different heddle frames respectively, so that when the first heddle frame and the second heddle frame move respectively, the two parts of the textile warp thread can alternately form a shed.

[0017] This invention provides a loom with a variable shedding selvage mechanism. The loom includes a flying shuttle and a variable shedding selvage mechanism. The variable shedding selvage mechanism includes: a first heald frame connected to a first motor via a first traction rope, capable of moving along a guide rail under the drive of the first motor; and a second heald frame connected to a second motor via a second traction rope, capable of moving along a guide rail under the drive of the second motor. The first motor and the second motor are configured to rotate in opposite directions to drive the first heald frame and the second heald frame to move in opposite directions, thereby forming a shed. The flying shuttle reciprocates from the shed to weave in the weft yarn.

[0018] Preferably, the first motor and the second motor are configured to have adjustable rotational speeds and rotational revolutions, so that the opening size of the shed and the forming time can be adjusted. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the driving unit part of the present invention;

[0021] Figure 3 This is a side cross-sectional view of the adjusting roller portion of the present invention;

[0022] Figure 4 This is a schematic diagram of the roller portion of the present invention;

[0023] Figure 5 This is a side cross-sectional view of the roller portion of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of the roller shaft support part of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the frame unit part of the present invention;

[0026] Figure 8 This is a schematic diagram of the opening movement process of the frame unit of the present invention performing the first movement condition;

[0027] Figure 9 This is a schematic diagram of the opening movement process of the frame unit of the present invention performing the second movement condition;

[0028] Figure 10 This is an enlarged view of the shed portion under the first motion condition of the present invention;

[0029] Figure 11 This is an enlarged view of the shed portion under the second motion condition of the present invention.

[0030] In the diagram: 100, drive unit; 110, motor; 120, lifting roller; 130, traction rope; 140, first roller; 150, adjusting roller; 151, adjusting wheel body; 152, threaded rod; 153, bearing; 154, slide groove; 155, roller shaft support; 156, adjusting nut; 157, support; 158, side groove; 159, connecting groove; 160, second roller; 170. Traction rope pressure plate; 200. Support unit; 210. Upper cantilever; 211. Rib plate; 212. Support cantilever; 213. Upper mounting base; 214. Rib plate; 220. Lower support column; 230. Lower cantilever; 231. Lower mounting plate; 300. Heald frame unit; 310. Heald frame body; 311. First heald frame body; 312. Second heald frame body; 320. Heald wire; 400. Shelf. Detailed Implementation

[0031] The following is a detailed explanation with reference to the accompanying drawings.

[0032] Currently used textile machines primarily utilize mechanical means to weave natural or synthetic fibers into textiles. The weaving process mainly involves the mechanical motion driving two warp threads to alternately cross each other, forming a shed 400, into which weft threads are then introduced. The introduced weft threads are pressed between the alternating warp threads, and this process of creating the shed 400 and introducing the weft threads is repeated to complete the weaving process. Currently, various driving methods can be used for weft introduction. Early technologies used flying shuttle weft introduction, while modern looms in factories now employ air-jet, water-jet, or rapier weft introduction methods. For selvage looms, used for weaving the edges of fabrics, the weaving method often needs to be changed to adapt to various process requirements due to the diverse processes at the edge. This change requires altering the size of the shed 400, but conventional looms have a fixed structure, making it difficult to change the shed 400 size, thus hindering their adaptability to process adjustments.

[0033] The present invention provides the following embodiments:

[0034] This solution provides a variable opening selvage mechanism, including: a first heald frame 311, which is connected to a first motor via a first traction rope and can move along a guide rail under the drive of the first motor;

[0035] The second frame 312 is connected to the second motor via the second traction rope and can move along the guide rail under the drive of the second motor.

[0036] The first motor and the second motor are configured to rotate in opposite directions to drive the first heald frame 311 and the second heald frame 312 to move in opposite directions, thereby forming the shed 400. The relative opposite movement can be configured into different reverse movement types based on different textile processes.

[0037] The reverse movement types include at least the following three:

[0038] 1. The first heald frame 311 stops moving, and the second heald frame 312 moves up and down at a stable speed, so that while one part of the warp is absolutely stationary, the other part of the warp moves at a fixed interval to form the first type of shed 400.

[0039] 2. The first heald frame 311 stops moving, and the second heald frame 312 moves up and down at varying speeds, so that while one part of the warp is absolutely stationary, the other part of the warp forms the second type of shed 400 at varying speed intervals.

[0040] 3. The first heald frame 311 and the second heald frame 312 perform opposite movements at the same speed, so that the two warp threads move in opposite directions to form the third type of shed 400.

[0041] Under the above three motion conditions, the motion of the first motor and the second motor are as follows:

[0042] 1. The first motor stops moving, and the second motor performs forward and reverse rotation at a stable speed.

[0043] 2. The first motor stops moving, and the second motor performs forward and reverse rotation at a variable speed.

[0044] 3. The first motor and the second motor perform opposite actions at the same time.

[0045] In the above three motion scenarios,

[0046] like Figure 8 As shown, this illustrates the movement of the meridian in the first motion scenario. At time t0, the first heald frame 311 and the second heald frame 312 are parallel; this can be considered the initial state. At time t1, the first heald frame 311 remains stationary, while the second heald frame 312 moves upwards by a distance, at which point the weft is introduced (represented by the fork-shaped line perpendicular to the paper in the diagram, indicating the direction of weft introduction). At time t... top In this state, the first heald frame 311 remains stationary, while the second heald frame 312 moves upward to its highest position. At this point, the latitude line has reached or is close to the opposite side (represented by a cross shape with an outer ring in the diagram). Time is t. bottom In this state, the first heald frame 311 remains stationary, while the second heald frame 312 moves downwards to its lowest position, at which point no weft yarn is introduced (see figure, no symbol indicating the introduction of weft yarn is shown). When the second heald frame 312 moves upwards to be flush with the first heald frame 311, this can be recorded as state t0. Then, in the next state t1 (recorded as t in the figure)... 1ˊ In the state of ( ), the weft yarn is introduced from the opposite side (the direction of weft introduction is indicated by the point perpendicular to the paper in the diagram). This process is repeated to achieve the weft introduction process.

[0047] refer to Figure 10The enlarged view of the shed 400 section in the first motion case shows that the warp threads passing through the first heald frame 311 remain stationary due to the action of the stopped first motor, and the first line segment forming the shed 400 maintains a first angle θ1 with the horizontal plane. Meanwhile, the warp threads passing through the second heald frame 312 are driven by the moving second motor, causing the second line segment forming the shed 400 to form a variable second angle θ2 with the horizontal plane, and this variable change is uniform. The aforementioned water surface refers to a surface parallel to the ground. Using the horizontal plane as a reference, the angle formed by a line segment above the horizontal plane is recorded as a positive value, and the angle formed by a line segment below the horizontal plane is recorded as a negative value. Assuming the weft insertion direction is parallel to the ground, referring to the enlarged view of the angle state in state t1 in Figure x, it can be seen that the first angle θ1 is preferably a negative value close to 0°. The first angle θ1 is preferably -10° to -2°. The above scheme is particularly suitable for the rapier weft insertion process. The rapier itself is relatively heavy, and it may sag due to gravity when passing through the shed 400. In this case, the scheme designs the first angle θ1 between the first segment of the shed 400 and the horizontal plane to be close to 0°, thus allowing the first segment to support the weft insertion process. Furthermore, the value of the first angle θ1, designed to be between -10° and -2°, takes into account both the thickness of the weft insertion unit (e.g., the rapier) and the maximum sag of this type of weft insertion (minimum sag at the beginning of insertion, gradually increasing as the weft thread passes through the shed 400 and flies to the opposite side, exhibiting a parabolic motion). Therefore, a maximum margin of -10° is designed to ensure sufficient warp support for the weft thread throughout its movement after launch. Since the weft insertion angle is essentially fixed, and the first heald frame 311 remains stationary in this motion, the timing of the weft insertion is configured to coincide with a positive second angle. Based on the movement of the second heald frame 312, the second angle can change from a positive value to a negative value, and then from a negative value to a positive value; or it can change from a positive value to zero, and then from zero to a positive value. According to process requirements, the second angle can be adjusted, and weft insertion begins when the second angle is positive.

[0048] like Figure 9 As shown, this illustrates the movement of the meridian under the second motion scenario. Similar to the first scenario, at time t0, the first heald frame 311 and the second heald frame 312 are parallel; this can be considered the initial state. At time t1, the first heald frame 311 remains stationary, while the second heald frame 312 moves upwards by a distance, at which point the latitude line begins to be introduced (represented by the fork-shaped line perpendicular to the paper in the diagram, indicating the direction of latitude introduction). At time t... topIn this state, the first heald frame 311 remains stationary, while the second heald frame 312 moves upward to its highest position. At this point, the latitude line has reached or is close to the opposite side (represented by a cross shape with an outer ring in the diagram). Time is t. bottom In this state, the first heald frame 311 remains stationary, while the second heald frame 312 moves downwards to its lowest position, at which point no weft yarn is introduced (see figure, no symbol indicating the introduction of weft yarn is shown). When the second heald frame 312 moves upwards to be flush with the first heald frame 311, this can be recorded as state t0. Then, in the next state t1 (recorded as t in the figure)... 1ˊ In the state of ( ), the weft yarn is introduced from the opposite side (the direction of weft introduction is indicated by the point perpendicular to the paper in the diagram). This process is repeated to achieve the weft introduction process.

[0049] The first included angle θ1 in the second motion case remains unchanged, and is preferably -10° to -2°. The second angle in the second motion case differs from that in the first motion case within the same time interval. (Refer to...) Figure 10 and Figure 11 The figures show the conditions in state t1 and t2 respectively. top The state of the second included angle θ2 in the first motion and the second motion under state t1. For ease of description, the second included angle θ2 in state t1 is denoted as the second initial included angle θ. 2s , will t top The second included angle θ2 in the state is denoted as the second final included angle θ. 2e Furthermore, let the second initial included angle of the first motion be denoted as θ. 2s1 The second initial included angle of the second motion is denoted as θ. 2s2 Let θ denote the second final included angle of the first motion. 2e1 The second final included angle of the second motion is denoted as θ. 2e2 The comparison in the figure shows that, at state t1 when the weft insertion begins, the second initial angle θ of the second motion is... 2s2 The second initial angle θ greater than that of the first motion 2s1 This is because the second motion in this scheme is a variable-speed motion. During the process from t0 to t1, the second initial angle for crossing the latitude line in the second motion case is larger than that in the first motion case. Referring again to the diagram, the final angle θ of the second motion... 2e2 The second final angle θ of the first motion is equal to the first motion. 2e1 This indicates that the second motion of the variable speed in this scheme can be completed from t1 to t2. top During the process, the movement speed of the second frame 312 is reduced so that the second final angle θ between the two movements is reduced. 2eEqual. In the second motion scenario of this scheme, the second angle changes its size through a variable-speed change, first rapidly increasing and then slowly increasing. This motion method is suitable for situations where the weft insertion weight is relatively large (e.g., rapier weft insertion) but the weft yarn weight is relatively small. The first motion scenario is suitable for situations where the weft yarn in rapier weft insertion is relatively heavy. The specific weft yarn weight classification can be done manually. This scheme provides an example: for the same weft insertion length, weft yarns with a final weft drop greater than 3cm are classified as suitable for the first motion scenario; weft yarns with a final weft drop less than 3cm are classified as suitable for the second motion scenario. The purpose of classifying the weft yarns to suit the second type is that, due to their relatively light weight, they have a higher launch speed. To prevent the shed 400 from being too small during launch, the second motion creates the shed 400 at a faster speed than the first motion. Furthermore, to prevent structural bouncing caused by the shed 400 creation motion from affecting the weft yarn's trajectory at the end of the shed 400 creation motion (when the weft yarn has already moved within the shed 400 and is nearing its opposite endpoint), the second motion moves at a lower speed than the first motion at the end of the shed 400 creation motion to stabilize the shed 400. This solution utilizes a first motor and a second motor that can be driven separately to achieve a more stable shed 400 manufacturing for this type of weft yarn.

[0050] The third motion configuration is similar to that of the prior art, in which the first and second segments of the shed 400 move away from each other, such that the first and second included angles are essentially opposite values ​​at the same time (for example, when the first included angle is positive, the second included angle is negative). This third motion configuration is suitable for air-jet or water-jet weft insertion methods, where the weft yarn is lighter and the amount of sag during weft insertion is minimal.

[0051] To address the aforementioned problems, this invention proposes a variable shedding selvage mechanism and a loom incorporating this mechanism. The variable shedding selvage mechanism can be used in conjunction with a textile machine. Figure 1 As shown, Figure 1This is a schematic diagram of the overall structure of the variable opening selvage mechanism of the present invention. The selvage mechanism includes a drive unit 100, a support unit 200, and a heald frame unit 300. The support unit 200 constitutes the main structure of the selvage mechanism and has an upper cantilever 210, a lower support column 220, and a lower cantilever 230. The upper cantilever 210 is connected to the lower cantilever 230 through the lower support column 220. The upper cantilever 210 and the lower cantilever 230 are generally strip-shaped and have at least two ends. The upper cantilever 210 is connected to the lower support column 220 near one end, and the lower cantilever 230 is connected to the lower support column 220 near one end, so that the overall shape of the upper cantilever 210, the lower support column 220, and the lower cantilever 230 is approximately C-shaped when viewed as a whole. The lower support column 220 is generally configured as a double-support structure, that is, it has two sub-support columns, and the length of one sub-support column is greater than the length of the other sub-support column. The longer sub-support is connected at both ends between the upper cantilever 210 and the lower cantilever 230, while the shorter sub-support is connected at only one end to the lower cantilever 230.

[0052] The lower cantilever 230, at the end furthest from the lower support column 220, is connected to a lower mounting plate 231. The lower mounting plate 231 is generally a flat plate structure, with screw holes for screws to pass through. The lower mounting plate 231 is used to mount this selvage mechanism onto the frame of the loom. This selvage mechanism can be used with existing loom equipment. The lower mounting plate 231 of this selvage mechanism is connected to the frame of the loom equipment by bolts, and the mounting position is adjusted using the cross-shaped waist holes on the loom, allowing the selvage mechanism to be installed on the loom.

[0053] The upper cantilever 210 has a stiffening slab 211 connected to its end away from the lower support column 220. A supporting cantilever 212 is connected below the stiffening slab 211. The supporting cantilever 212 is generally strip-shaped and connected vertically to the stiffening slab 211. Preferably, at least two stiffening slabs 211 can be provided, namely a first stiffening slab and a second stiffening slab, both of which are connected to the upper cantilever 210 and the supporting cantilever 212. Using double stiffening slabs 211 can improve the overall structural stability.

[0054] The end of the support cantilever 212 away from the rib plate 211 is connected to the upper mounting base 213. After assembly, the upper mounting base 213 is higher than the lower mounting plate 231 in the vertical direction. The upper mounting base 213 is used to mount this mechanism to a textile machine. The upper mounting base 213 is generally U-shaped, with its U-shaped bottom connected to the end of the support cantilever 212, such that the opening direction of the U-shaped plate is vertically downward. Screw holes can be provided on both sides of the U-shaped plate of the upper mounting base 213 to facilitate mounting the upper mounting base 213 to the textile machine using screws passing through the screw holes. Preferably, the support cantilever 212 is provided with a rib plate 214. The rib plate 214 forms an irregular cross-section on the support cantilever 212 to enhance the rigidity of the support cantilever 212.

[0055] like Figure 2 As shown, the drive unit 100 is generally mounted on the upper cantilever 210 and the stiffening plate 211. The drive unit 100 includes a motor 110 and a lifting roller 120. The motor 110 has a rotary output shaft, which rotates when energized. The lifting roller 120 is generally configured as a wheel structure, with its wheel axis axially connected to the rotary output shaft of the motor 110, so that the lifting roller 120 can be driven by the motor 110 to roll. The transmission assembly formed by the motor 110 and the lifting roller 120 is mounted on a placement plate connected to the end of the stiffening plate 211 away from the ground. The placement plate is generally configured as a flat plate structure, connected to the other side of the stiffening plate 211 away from the support cantilever 212, and its surface is parallel to the horizontal direction. The placement plate provides a support mounting position for the assembly of the motor 110 and the lifting roller 120.

[0056] The drive unit 100 also includes a traction rope 130, which is wound around the lifting roller 120, allowing the traction rope 130 to be released and wound up as the lifting roller 120 rotates. The other end of the traction rope 130 not wound around the lifting roller 120 is sequentially wound around a first roller 140, an adjusting roller 150, and a second roller 160 mounted on the upper cantilever 210. Specifically, the traction rope 130 is wound around the lower half of the first roller 140, the upper half of the adjusting roller 150, and the upper half of the second roller 160. On the upper cantilever 210, the first roller 140, adjusting roller 150, and second roller 160 are sequentially arranged in a direction from the end near the motor 110 to the end near the lower support column 220. The shafts of the first roller 140 and second roller 160 are located within the hollow space of the upper cantilever 210, and most of the wheel body of the first roller 140 and second roller 160 is also located within the hollow space.

[0057] Figure 3This is a detailed structural diagram of the adjusting roller 150. The adjusting roller 150 includes an adjusting wheel body 151, a roller shaft, a bearing 153, a slide groove 154, a roller shaft support 155, a support 157, an adjusting nut 156, and a spring retainer. One end of the roller shaft is fitted with the bearing 153, and the adjusting wheel body 151 is fitted around the bearing 153. The rotational property of the bearing 153 allows the adjusting wheel body 151 to rotate freely. The roller shaft passes through the bearing 153 and the adjusting wheel body 151, and a spring retainer is provided on its outer side to restrict the axial movement of the adjusting wheel body 151. The other end of the roller shaft is held by the roller shaft support 155, which is located within the slide groove 154, allowing the adjusting wheel body 151 connected to the roller shaft support 155 to move within the slide groove 154. The slide groove 154 is generally elongated to provide sufficient movement distance for the adjusting wheel body 151. The slide groove 154 is arranged vertically, allowing the adjusting wheel 151 to move vertically up and down. The upper cantilever 210 has a perforation corresponding to the portion where the adjusting wheel 150 is located, with at least the adjusting wheel 151 situated within the perforation, ensuring that the upper cantilever 210 does not obstruct the vertical movement of the adjusting wheel 150. A support 157 is provided on the side of the slide groove 154 opposite to the side where the roller is located. The support 157 connects the adjusting wheel 150 to the upper cantilever 210. The support 157 can be roughly configured as a U-shape, secured by clamping its two ends onto the upper cantilever 210. An adjusting nut 156 is provided within the slide groove 154, used to adjust the vertical position and thus tension the traction rope 130 to prevent vibration and motion distortion. The roller shaft support 155 is generally block-shaped, and its width is adapted to the width of the slide groove 154 so that the roller shaft support 155 can slide within the slide groove 154. The roller shaft support 155 has an opening that allows the roller shaft to pass through, through which a fixed connection can be formed with the roller shaft. Figure 6As shown, a threaded rod 152 is connected to the roller shaft support 155. The radial dimension of the threaded rod 152 is adapted to the groove width of the slide groove 154. The threaded rod 152 is placed within the slide groove 154 so that it can move up and down along the slide groove 154. The other end of the threaded rod 152, away from the connection to the roller shaft support 155, extends downward through the slide groove 154. At least two adjusting nuts 156 are respectively provided on the portion of the threaded rod 152 on both sides of the position where the threaded rod 152 extends through the slide groove 154. By adjusting the position of the two adjusting nuts 156 on the threaded rod 152, the movement of the threaded rod 152 within the slide groove 154 can be adjusted, thereby allowing the position of the adjusting wheel 151 to be adjusted up and down. By adjusting the vertical position of the roller shaft, the traction rope 130 wound on the adjusting wheel 151 can move up and down, thereby adjusting the wrap angle of the traction rope 130 on the first roller 140 and the second roller 160. This ensures that the traction rope 130 maintains a good tension within a service cycle, thus suppressing motion distortion caused by vibration of the traction rope 130. The traction rope 130 uses a V-shaped winding method, ensuring its service life. Figure 4 and 5 As shown, the traction rope 130 is pressed tightly onto the roller by the traction rope pressure plate 170 to prevent slippage. The roller has a connecting groove 159 that connects to a side groove 158 on its side. The end of the traction rope 130 passes through the connecting groove 159 into the side groove 158. The traction rope pressure plate 170 can form a shape fit with the side groove 158 to press the end of the traction rope 130 into the side groove 158. A threaded hole may be provided in the side groove 158, and a corresponding threaded hole is also provided on the traction rope pressure plate 170. By installing screws into the aligned threaded holes, the traction rope pressure plate 170 can be stably pressed into the side groove 158.

[0058] like Figure 7 As shown, preferably, the two sub-supports of the lower support column 220 are provided with slide rails, and guide rails are provided on the two side slide rails respectively. The guide rails are block-shaped structures that can slide within the slide rails. A heddle frame unit 300 is sandwiched between the guide rails on both sides. The heddle frame unit 300 includes at least two heddle frame bodies 310. The heddle frame body 310 is generally configured as a frame structure with a frame opening in the middle to allow an object to pass through. The two heddle frame bodies 310 are arranged one in front of the other between the guide rails in the horizontal direction. Pulleys are provided inside the guide rails, and the edges of the heddle frame bodies 310 are slidably mounted on the pulleys so that the heddle frame bodies 310 can move on the pulleys of the guide rails.

[0059] The aforementioned traction rope 130 has at least two strands, each connected to the heald frame 310, so that the traction rope 130 can drive the heald frame 310 to move along the pulley, in other words, to move up and down in the vertical direction. At least one heald wire 320 is arranged vertically inside the heald frame 310. The heald wire 320 is generally in the form of a thin strip, such as... Figure 7 As shown. The heddle wire 320 is connected to the upper and lower sides of the heddle frame 310 at its upper and lower ends, respectively. The heddle wire 320 has heddle eyelets, which are roughly hollow ring structures to allow warp yarns to pass through. Preferably, the heddle eyelets are located in the middle of the heddle wire 320. Since the heddle wire 320 is connected to the heddle frame 310, when the heddle frame 310 moves under the drive of the traction rope 130, it also drives the heddle wire 320 to move, causing the warp yarns passing through the heddle wire 320 to move vertically. By inserting multiple parallel warp threads through the multiple heddle eyelets provided in the two heddle frames 310, the multiple parallel warp threads intersect vertically when the two heddle frames 310 move separately. The opening formed by the intersecting warp threads is called the shed 400, and this process is called the shed opening movement, which can be referred to as... Figure 8 The shed 400 is used to insert the weft thread; this movement is called the weft insertion motion. The structure used for inserting the weft thread originates from the loom. Existing weft insertion drive structures come in various types, such as flying shuttle, air jet, water jet, and rapier weft insertion.

[0060] At least two motors 110 and two sets of lifting rollers 120 are combined to form a drive group. At least two traction ropes 130 are combined with the two drive groups respectively. The other ends of the two traction ropes 130 are respectively connected to two heald frames 310 so that the two heald frames 310 can be driven separately. When performing selvage spinning, the two motors 110 rotate forward and backward at the same time, driving the traction ropes 130 to extend and retract, thereby causing the two heald frames 310 to move in opposite directions at the same time. This causes the two warp threads passing through the heald eye to move up and down in opposite directions in the vertical direction, thereby forming a shed 400. The shuttle then passes through the shed 400 to realize spinning.

[0061] Furthermore, addressing the problem that existing spinning equipment cannot adjust the shed 400 according to different weaving requirements of fabrics, this invention proposes a preferred embodiment of a selvage control mechanism. In this embodiment, the operating parameters of the motor 110 can be adjusted, and a processing unit for performing control operations is included. The processing unit is electrically connected to the motor 110 to adjust its operation. Essentially, the processing unit controls the forward and reverse rotation speeds of the two motors 110 to adjust the shed 400 formation time; the faster the motor 110 speed, the shorter the shed 400 formation time, and vice versa. The processing unit can also control the number of rotations of each of the two motors 110 to control the size of the shed 400. More rotations result in greater elongation or contraction of the traction rope 130, thus increasing the shed 400; conversely, fewer rotations result in less elongation or contraction of the traction rope 130, thus decreasing the shed 400. Therefore, the basic scheme of this embodiment can further control the movement of the heald frame 310 by adjusting the working parameters of the motor 110, thereby achieving the purpose of adjusting the size and formation time of the shed 400 based on actual textile needs. During the debugging process of the loom for weft feeding and weft insertion, a larger shed is required to coordinate with the weft insertion and warp feeding actions to ensure machine debugging. At this time, the formation of the shed will be relatively slow. When the loom enters the normal weaving stage, the size and speed of the shed need to be adjusted according to the type of yarn, pattern, and weaving of the fabric to match the movement of other looms. Compared with the prior art that uses a fixed asynchronous ellipsoid linkage to drive the movement of the heald frame, this invention innovatively chooses to use a traction rope 130 for driving. Because the movement of the traction rope 130 driven by the motor 110 can be adjusted, this invention can achieve the effect of adjusting the size and formation time of the shed 400 for different weaving conditions.

[0062] Preferably, the following advanced embodiments are also provided. For ease of description, the two heald frames 310 are referred to as the first heald frame 311 and the second heald frame 312, respectively. The motors 110 that drive the first heald frame 311 and the second heald frame 312 are referred to as the first motor and the second motor, respectively. The traction ropes 130 connected to the first heald frame 311 and the second heald frame 312 are referred to as the first traction rope and the second traction rope, respectively. When the weft insertion unit belongs to the first type and the weft insertion stability is at the first level, the first motor stops moving, and the second motor performs forward and reverse rotation at a stable speed and uniformly, so that while a portion of the warp yarns are absolutely stationary, another portion of the warp yarns moves at fixed intervals to form the first type of shed 400. In this case, a certain motor 110 is controlled not to operate so that its corresponding warp yarn remains stationary, while the weft insertion unit passes through the stationary portion of the warp yarns, which can provide a certain support for the weft insertion unit. The first type of weft insertion unit can be pre-divided, and the division criteria can be based on the structural type of the weft insertion unit and the type of textile being performed. In the first type, the weft insertion unit structure is characterized by its heavy weight and susceptibility to external forces, such as the rigid rapier weft insertion structure. The type of textile being executed can be determined by the weight of the weft yarn used for weft insertion, and can be roughly divided into light textiles and heavy textiles. Textiles that conform to the first type are heavy textiles. Weft insertion stability refers to the stability of the weft insertion unit as it moves between 40° sheds. It can be characterized by the vertical displacement curve during each movement. The displacement can be measured by sensors; the smaller the vertical displacement, the higher the stability. Due to differences in the structure of the weft insertion unit and the type of weft yarn used in the textile, weft insertion stability varies. Even in the same fabric weaving process, changes in the process can alter weft insertion stability. Higher weft insertion stability means that weft insertion and beating can be performed more quickly and evenly, resulting in a faster weaving speed. Lower weft insertion stability does not necessarily indicate a defect in the weaving process, as some weaving processes (such as heavy selvedge) cannot avoid this problem; it simply requires a corresponding change in the warp yarn shedding process. The stability of the first level of weft insertion indicates that the weft insertion process is highly stable, and the weft insertion unit is basically in a horizontal movement state. This scheme can intelligently adjust the parameters of the warp opening based on the weft insertion process, and can be applied to the special cases of weaving heavier weft yarns. For example, in the case of a weft insertion unit structure using a rigid rapier weft insertion shaft, for heavy weft yarns with a large reed width, it is necessary to ensure that the rapier shaft is provided with a certain amount of support to prevent problems such as shaking and changes in the weft insertion angle due to the weight of the weft yarn.

[0063] When the weft insertion unit is of type one and the weft insertion stability is at level two, the first motor stops moving, and the second motor performs forward and reverse movements at variable speeds. This allows the other portion of the warp to form a second type of shed 400 at variable speed intervals while one section of the warp is absolutely stationary. When the weft insertion stability is at level two, it indicates that the weft insertion unit has poor stability and exhibits vertical swaying. In this case, the timing of the weft insertion needs to be adjusted appropriately. This solution does not choose to adjust the movement of the weft insertion unit because its movement is inherently unstable, and adjustment might introduce more problems. This solution chooses to adjust the movements of the first and second motors, thereby adjusting the warp shed formation process. Based on the above, when the weft insertion stability is poor, proceeding with the weft insertion at the original rhythm may lead to significant changes in the weft insertion contact angle, resulting in differences in the weft insertion position or weft insertion jumping. Simultaneously, if the shed formation speed increases, it will also affect the support for the weft insertion unit. Therefore, the present invention adjusts the speed change of the second motor, thereby increasing the weft insertion speed at the moment of contact and slowing down the speed when the weft insertion unit passes through the shed at 40°, so as to simultaneously meet the requirements of the weft insertion contact angle and the stable support of the weft insertion.

[0064] When the weft insertion unit is of the second type, the first motor and the second motor move in opposite directions simultaneously at the same speed, causing the two warp threads to move in opposite directions to form the third type of shed 400. At the same rotational speed, the formation time of the third type of shed 400 of the same size is shorter than that of the first type of shed 400. The second type of weft insertion unit is suitable for most textile needs, such as flexible rapier weft insertion, air-jet, and water-jet weft insertion structures. In this case, the alternating movement of the first heald frame 311 and the second heald frame 312 forms the third shed 400 in a shorter time, thereby improving textile efficiency.

[0065] Preferably, this invention also addresses the following issue: when the textile process changes (whether changing the weaving task or changing the weaving process within the same weaving task), the textile machine automatically switches the drive control parameters of the heald frame according to the program. This solution finds that during the switching process, due to the elastic nature of the structure, the resulting elastic fluctuations affect the weaving effect, especially the effect during a short period at the moment of switching. This solution uses a traction rope 130 as the structure driving the heald frame. Its advantage is that the motion parameters of the heald frame can be adjusted almost infinitely to adapt to different weaving needs. However, similar to spinning yarn, elastic fluctuations also exist. Elastic fluctuations refer to the fact that due to the elastic deformation of the drive structure itself, when the original motion state changes, the drive structure does not directly jump to the new motion state, but rather has a certain oscillation range under the action of elastic deformation. This period of fluctuation is called elastic fluctuation. After a period of time, the elastic fluctuation may gradually decrease until the drive structure drives the heald frame 310 to weave in a stable new motion state. However, within the above-mentioned elastic fluctuation range, the quality of the woven weft yarn may have defects, such as skewness or uneven density. Therefore, this invention proposes the following technical solution: A sensor is set up to determine the elastic variation during the opening movement. Based on the elastic variation, the adjusting roller 150 is moved synchronously to change the wrap angle of the traction rope 130 on the first roller 140 and / or the second roller 160, thereby reducing the elastic variation to an acceptable level within the expected range. The opening movement refers to the process in which the motor 110 drives the traction rope 130, which in turn drives the heald frame, and consequently the warp threads on the heald frame, moving them up and down in the vertical direction. The elastic variation can be characterized based on an elastic displacement curve, and the displacement is acquired through a visual sensor or a displacement sensor. The elastic variation data acquisition object for the opening movement can be the traction rope 130 and / or the heald frame. Furthermore, the warp threads also exhibit a certain degree of elastic variation. If it is desired to further consider the elastic variation of the warp threads during process changes, the warp threads can also be used as the acquisition object. By acquiring the displacement curve, the numerical characteristics of elastic variation can be determined. Taking longitudinal swaying as an example, the swing amplitude (converted to displacement) of the heald frame in the modified process is known according to the program settings. The data remaining after excluding the known displacement data in the collected displacement curve data represents the abnormal data caused by elastic variation. Based on this data, the motion characteristics of elastic variation, such as the amount of swaying, can be determined. After acquiring the elastic variation characteristics, the adjusting roller 150 is adjusted. As described above, the traction rope 130 is wound around the first roller 140, the second roller 160, and the adjusting roller 150, forming a V-shaped winding through the adjusting roller 150. By adjusting the position of the adjusting roller 150 in the vertical direction, the wrap angle of the traction rope 130 on the first roller 140 and the second roller 160 can be changed, thereby adjusting the tension of the traction rope 130 on the rollers. After acquiring the elastic variation characteristics, the vertical height of the adjusting roller 150 is adjusted based on these characteristics.Compared with the prior art, the present invention can adjust the adjusting roller according to the elastic variation characteristics. Based on the above-mentioned distinguishing technical features, the problem to be solved by the present invention may include: how to solve the weft quality defects caused by structural elastic variation during the switching of heald frame drive control parameters of a textile machine, so as to improve the selvage weaving effect. Based on this, a preferred embodiment is that the adjusting roller 150 can be controlled to move in the slide 154, which can be driven by a motor 110. The elastic variation characteristics are established with the position of the adjusting roller 150, so that the elastic variation can be eliminated by automatically adjusting the adjusting roller 150. This solution can make the transition of the conversion process in textiles smoother, especially when the textile process is changed during the textile process of the same textile, it can significantly reduce the problem of poor weft weaving effect caused by elastic variation during the process change, so that the textile process can proceed smoothly.

[0066] This solution also provides a loom with a variable shedding selvage mechanism. The loom may include a drive unit 100, a weft insertion unit, and a yarn gathering unit, and also includes the variable shedding selvage mechanism described in the above embodiments. The variable shedding selvage mechanism is disposed as a component within the loom. The yarn gathering unit is used to organize the yarn to be woven, and the drive unit 100 is used to drive the weft insertion unit and to drive the yarn gathering unit to organize the woven yarn. The weft insertion unit allows the weft yarn to pass through the shed 400 to weave the weft yarn into the warp yarn, thereby realizing the selvage process. The weft insertion unit can be a flying shuttle, air-jet, water-jet, or rapier weft insertion structure.

[0067] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this invention, and these solutions all fall within the scope of this invention and its protection. Those skilled in the art should understand that this specification and its accompanying drawings are illustrative and do not constitute a limitation on the claims. The scope of protection of this invention is defined by the claims and their equivalents. This specification contains multiple inventive concepts; terms such as "preferredly," "according to a preferred embodiment," or "optionally" indicate that the corresponding paragraph discloses an independent concept. The applicant reserves the right to file divisional applications based on each inventive concept. Throughout the text, features introduced by "preferredly" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A variable opening selvedge mechanism characterized by, Comprise: A first heald frame body (311) connected with a first motor through a first traction rope and capable of moving along a guide rail under the drive of the first motor; A second heald frame body (312) connected with a second motor through a second traction rope and capable of moving along a guide rail under the drive of the second motor; The first motor and the second motor are configured to rotate in opposite directions to drive the first heald frame body (311) and the second heald frame body (312) to move in opposite directions, thereby forming a shed (400), wherein the opposite movement can be configured as different reverse movement types under different textile processes, and the reverse movement types include: the first heald frame body (311) stops moving, and the second heald frame body (312) moves up and down at a constant speed, so that in the case of absolute static of a single part of the warp, the other part of the warp moves to form a first type of shed at a fixed interval period; the first heald frame body (311) stops moving, and the second heald frame body (312) moves up and down at a variable speed, so that in the case of absolute static of a single part of the warp, the other part of the warp moves to form a second type of shed at a variable interval period; the first heald frame body (311) and the second heald frame body (312) perform opposite movements at the same speed, so that two parts of the warp move in opposite directions to form a third type of shed; The mechanism further comprises a support unit (200) for mounting the mechanism as a whole on a loom, the support unit (200) comprising an upper cantilever (210), a lower support column (220) and a lower cantilever (230), the upper cantilever (210) being connected with the lower cantilever (230) through the lower support column (220), the lower support column (220) being provided with a slide rail, and the guide rail being connected to the slide rail; The upper cantilever (210) is provided with a platform for mounting the motor (110) and the lifting roller (120) at an end away from the lower support column (220), the first heald frame body (311) and the second heald frame body (312) are located between the guide rails at the position of the lower support column (220), and a first roller (140), an adjusting roller (150) and a second roller (160) are sequentially arranged on the upper cantilever (210) in the direction from the end close to the motor (110) to the end close to the heald frame body (310), the traction rope (130) sequentially passes through the first roller (140), the adjusting roller (150) and the second roller (160) and is connected to the heald frame body (310), a sensor is arranged to determine the elastic change in the opening movement process, the adjusting roller (150) is synchronously moved based on the elastic change, the position of the adjusting roller (150) in the vertical direction is adjusted to change the wrap angle of the traction rope (130) on the first roller (140) and / or the second roller (160), so that the elastic change is weakened to an acceptable level within an expected range.

2. The mechanism of claim 1, wherein, The first traction rope and the second traction rope are respectively connected with the first motor and the second motor through the lifting roller (120), and the lifting roller (120) rotates with the motor.

3. The mechanism of claim 1, wherein, The first motor and the second motor are configured to be able to adjust the rotating speed and the rotating number of turns, so that the opening size and the forming time of the shed (400) can be adjusted.

4. The mechanism of claim 1, wherein, The traction rope (130) is wound on the first roller (140), the adjusting roller (150) and the second roller (160) in a V-shaped manner.

5. The mechanism of claim 1, wherein, The adjusting roller (150) comprises an adjusting roller body (151), a sliding groove (154), a support (157) and an adjusting nut (156), one end of the axle of the adjusting roller body (151) is arranged in the sliding groove (154) so that the adjusting roller body (151) can move in the sliding groove (154), the support (157) is used for connecting the adjusting roller (150) to the upper suspension arm (210), and the adjusting nut (156) is arranged in the sliding groove (154) to adjust the length of the adjusting roller body (151) that can move in the sliding groove (154).

6. The mechanism of claim 1, wherein, At least one heddle (320) is arranged in the heald frame body (310), the heddle (320) is provided with a heddle eye, and at least two parts of textile warp are respectively threaded through the heddle eyes of different heald frame bodies (310), so that when the first heald frame body (311) and the second heald frame body (312) move respectively, the two parts of textile warp can alternately form a shed (400).

7. A loom having a variable opening selvedge mechanism according to one of claims 1 to 6, characterized in that The loom comprises a shuttle and a variable opening selvedge mechanism, the variable opening selvedge mechanism comprises: a first heald frame body (311) connected with a first motor through a first traction rope and capable of moving along a guide rail under the driving of the first motor; a second heald frame body (312) connected with a second motor through a second traction rope and capable of moving along a guide rail under the driving of the second motor; The first motor and the second motor are configured to rotate in opposite directions to drive the first heald frame body (311) and the second heald frame body (312) to move in opposite directions, so as to form a shed (400), and the shuttle reciprocates in the shed (400) to weave in weft.

8. The loom according to claim 7, characterized in that The first motor and the second motor are configured to be able to adjust the rotating speed and the rotating number of turns, so that the opening size and the forming time of the shed (400) can be adjusted.

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