CN117758417A

CN117758417A - Variable opening selvedge mechanism and loom with same

Info

Publication number: CN117758417A
Application number: CN202410007690.7A
Authority: CN
Inventors: 李佳锜; 廖耘浩; 李佳祥
Original assignee: Chengdu Univeristy of Technology
Current assignee: Chengdu Univeristy of Technology
Priority date: 2024-01-03
Filing date: 2024-01-03
Publication date: 2024-03-26

Abstract

The invention provides a selvedge mechanism with a variable opening, which comprises a first heald frame body, a first traction rope and a second traction rope, wherein the first heald frame body is connected with the first motor and can move along a guide rail under the drive of the first motor; the second heald frame body is connected with a second motor through a second traction rope and can move along the 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 to form a shed. The scheme of the heald frame body is pulled by the traction rope, so that the moving parameters of the heald frame body can be adjusted in real time, the spinning opening movement can be changed according to the change of the spinning process at any time in the spinning process, and the opening size can be adjusted to meet the spinning process requirement.

Description

Variable opening selvedge mechanism and loom with same

Technical Field

The invention relates to the field of textile machines, in particular to a selvedge mechanism with a variable opening and a loom with the selvedge mechanism.

Background

The weaving process of the loom mainly utilizes the warp yarn and weft yarn of the weaving yarn to form a textile in an alternate weaving mode. At least two parts of warps form cross motion in the vertical direction through a mechanical structure to form a shed between the two parts of warps, and then the fly shuttle wound with wefts shuttles back and forth in a shed channel to enable the wefts to be clamped between the two parts of warps so as to form interweaved warps and wefts, and the interweaved warps and wefts are circulated for multiple times to finally form textiles. Selvedge type textile machines are used for weaving the edges of fabrics, which are often wide in edge position and have different weaving parameter adjustments under different weaving process and pattern requirements, for example, the size of the shed needs to be adjusted to facilitate the passing of different sized shuttles and weft threads. However, the prior art is generally designed with only a fixed mechanical structure to actuate the textile yarn, so that the shed size is fixed, and the shed size cannot be flexibly adjusted according to the process requirements, so that the prior art cannot be suitable for various weaving processes or pattern requirements, and the universality is not high.

Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, since the applicant has studied a lot of documents and patents while making the present invention, the text is not limited to details and contents of all but it is by no means the present invention does not have these prior art features, but the present invention has all the prior art features, and the applicant remains in the background art to which the right of the related prior art is added.

Disclosure of Invention

In order to be able to lock the weft yarns of different weaving structures in time and to make it easier for the selvedge heddles to pass through the shed, selvedge devices have been known in the art which allow for adjustment of different positions between the heddles by means of a reciprocating movement of the heddles. For example, patent document publication No. CN110168156a discloses a selvedge device comprising at least two pairs of heald clamping plates for holding healds on both sides, and a driving device for driving the two pairs of heald clamping plates by a reciprocating motion, wherein the driving device comprises at least two driving bodies, and each pair of heald clamping plates is attached to the driving body, and wherein the heald clamping plates of at least one pair of heald clamping plates are attached to the respective driving bodies such that their height is adjustable with respect to the respective driving bodies. However, in this technical solution, adjacent healds are all connected to the same rotating motor, at this time, the adjustment relationship between the healds is equivalent to the follow-up adjustment relationship, the rotation of the motor can only adjust the positional relationship between the two healds at the same time, and the size of the shed formed by the two healds in a position staggered manner cannot be adaptively adjusted according to the shuttles and wefts with different sizes. Further, in the technical scheme, the adjusting component for connecting the heald structure is a rigid driving rod structure, which is quite opposite to the flexible traction rope structure for connecting the frame body structure, and the rigid driving rod structure of the technical scheme is connected with the same motor, so that the consistency of movement can be ensured only by arranging components which cannot generate larger deformation. Based on this, the above-mentioned prior art provides a technical teaching which is quite contrary to the present invention, wherein the driving part cannot be adjusted according to the parameters of the motor to obtain heald positional relationship adjustment procedures adapted to different shed sizes. Aiming at the defects of the prior art, the invention provides a selvedge mechanism with a variable opening, which comprises a first heald frame body, a first traction rope and a second traction rope, wherein the first heald frame body is connected with the first motor and can move along a guide rail under the drive of the first motor; the second heald frame body is connected with a second motor through a second traction rope and can move along the 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 to form a shed.

The prior art has developed solutions for forming a shed by providing thread guiding elements with opposite directions of movement. For example, patent document CN101906694a discloses a selvedge twisting device of a loom, which at least comprises a first yarn guiding element and a second yarn guiding element for guiding a selvedge line to form a shed, the two yarn guiding elements move back and forth in opposite directions through a driving mechanism, the driving mechanism comprises a first driving wheel and a second driving wheel which are connected with a driving motor in a transmission way, the eccentric parts of the outer end surfaces of the two driving wheels are respectively hinged with one end of a first connecting rod and one end of a second connecting rod, the other ends of the first connecting rod and the second connecting rod are respectively hinged with the first yarn guiding element and the second yarn guiding element, and the first yarn guiding element and the second yarn guiding element are arranged in a sliding manner in a sliding frame so as to drive the first yarn guiding element and the second yarn guiding element to move up and down mutually through the driving motor which rotates unidirectionally. According to the technical scheme, the two first driving gears and the two second driving gears which are meshed with the main driving gears simultaneously drive the two yarn guiding elements to move back and forth up and down along the linear chute, so that the selvedge line forms a shed. However, in this solution, the yarn guiding elements for performing the movement in opposite directions are all connected to the same driving device, which is equivalent to the fact that the reciprocal movement of the two yarn guiding elements in different directions is achieved by the same rotation of a single driving device, and the above object is achieved by the need of mutually engaged transmission assemblies. However, the transmission components meshed with the main driving gears are also in follow-up adjustment relation, and cannot be adaptively adjusted according to shuttles and wefts with different sizes. In addition, the adjusting component for connecting the yarn guiding elements in the technical scheme is of a rigid connecting rod structure, and the connecting component in the mode is completely opposite to the flexible traction rope structure for connecting the frame body structure, and because the driving force of the rigid connecting rod structure in the technical scheme is essentially derived from one motor, the parameter change of a single motor can only transmit force through the rigid connecting structure, otherwise, the consistency of the movement of different yarn guiding elements cannot be ensured, and the size of a shed becomes unstable. In contrast, the heald frame body of the invention can be connected with different motors, thereby providing a heald frame body motion state which can be adjusted according to motor parameters so as to adaptively adjust the size of the shed formed between different heald frame bodies according to shuttles with different sizes and wefts. The essence of the prior art is that the problem of adjusting the shed according to different weaving requirements of the fabric cannot be solved in order to ensure the motion stability between different healds, and the technical problem of the present invention cannot be solved by the person skilled in the art based on the above-mentioned prior art or the combination thereof.

Preferably, the first traction rope and the second traction rope are respectively connected with the first motor and the second motor in a transmission way through a lifting roller, and the lifting roller rotates along with the electrode.

The invention provides driving for the first traction rope and the second traction rope respectively, so that the two traction ropes can be actively driven to execute actions, and the action amplitude of the traction ropes can be adjusted steplessly by selecting a motor transmission mode, thereby being more suitable for the refined ostomy requirement. The two traction ropes can be actively driven and adjusted respectively, so that more relative movement modes can be achieved, and the ostomy movement is more suitable for different selvedge requirements provided by the invention.

Preferably, the first motor and the second motor are configured to be able to be adjusted in rotational speed and number of rotations so that the opening size of the shed and the formation time can be adjusted. Compared with the prior art, the invention can form different shed parameters through adjusting motor parameters. Based on the above distinguishing technical features, the problems to be solved by the present invention may include: how to adaptively adjust the shed parameters formed between heald frame bodies according to different weaving requirements of the fabric so as to improve the weaving efficiency and the weaving effect of the selvedge. Specifically, the working parameters of the motor can be adjusted, including the adjustment of the forward and reverse speeds of the motor, and the time for forming the shed is adjusted by controlling the forward and reverse speeds of the two motors; meanwhile, the size of the shed is controlled by controlling the number of turns of the two motors, namely, the movement of the heald frame body is further controlled by adjusting the working parameters of the motors, so that the purposes of adjusting the size of the shed and forming time based on actual spinning requirements are realized.

Preferably, the mechanism further comprises a support unit, the support unit is used for integrally mounting the mechanism on the loom, the support unit comprises an upper cantilever, a lower support and a lower cantilever, the upper cantilever is connected with the lower cantilever through the lower support, a sliding rail is arranged on the lower support, and the sliding rail is connected to the sliding rail.

The lower support post is provided with the sliding rail, so that the heald frame body connected to the sliding rail can stably move along the vertical direction under the limit of the sliding rail, and the sliding rail is designed to avoid the movement (such as shaking) in the horizontal direction because the ostomy movement of the shed is the movement in the vertical direction, thereby avoiding the problem of poor spinning effect caused by the horizontal movement.

Preferably, one end of the upper cantilever far away from the lower support column is provided with a platform for installing a motor and a lifting roller, the first heald frame body and the second heald frame body are positioned between guide rails at the position of the lower support column, the upper cantilever is sequentially provided with the first roller, the adjusting roller and the second roller along the direction from one end close to the motor to one end close to the heald frame body, and the traction rope sequentially bypasses the first roller, the adjusting roller and the second roller and is connected to the heald frame body.

The invention makes structural limitation on the movement route of the traction rope, and a plurality of contact points can be formed on the rollers by the limitation of the three rollers, and the contact points form tensioning action on the traction rope, so that the movement of the traction rope can be more stable, and more importantly, the tensioning in the movement process of the traction rope can be adjusted as required.

Preferably, the traction rope is wound on the first roller, the adjusting roller and the second roller in sequence in a V-shaped winding mode.

The traction rope is wound in such a way that it forms a contact point on several rollers, the position of which forms a wrap angle. The wrap angle refers to the center angle corresponding to the arc of the contact position. Based on the change in the contact point position and the change in the contact arc length, the wrap angle can be changed, and the change in the wrap angle means a change in the tensioning of the traction rope.

Preferably, the regulating roller comprises a regulating roller body, a sliding groove, a support and a regulating nut, wherein one end of a wheel shaft of the regulating roller body is arranged in the sliding groove so that the regulating roller body can move in the sliding groove, the support is used for connecting the regulating roller to the upper cantilever, and the regulating nut is arranged in the sliding groove so as to regulate the length of the regulating roller body which can move in the sliding groove.

Preferably, at least one heddle is arranged in the heald frame, heddle eyes are arranged on the heddles, and at least two parts of warp yarns for weaving respectively pass through the heddle eyes of different heald frames, so that when the first heald frame and the second heald frame respectively move, the two parts of warp yarns for weaving can alternately form a shed.

The invention provides a loom with a variable open selvedge mechanism, the loom comprises a fly and a variable open selvedge mechanism, the variable open selvedge mechanism comprises: the first heald frame body is connected with the first motor through a first traction rope and can move along the guide rail under the drive of the first motor; the second heald frame body is connected with a second motor through a second traction rope and can move along the 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 to form a shed from which the fly reciprocates to weave a weft thread.

Preferably, the first motor and the second motor are configured to be able to be adjusted in rotational speed and number of rotations so that the opening size of the shed and the formation time can be adjusted.

Drawings

FIG. 1 is a schematic illustration of the overall structure of the present invention;

fig. 2 is a schematic structural view of a driving unit portion of the present invention;

FIG. 3 is a schematic side cross-sectional view of a regulating roller portion of the present invention;

FIG. 4 is a schematic view of the structure of the roller portion of the present invention;

FIG. 5 is a schematic side cross-sectional view of a roller portion of the present invention;

FIG. 6 is a schematic view of the structure of the roller axle support portion of the present invention;

FIG. 7 is a schematic view of the structure of a heald frame unit portion according to the invention;

fig. 8 is a schematic view of a process of opening movement of the heald frame unit according to the invention for performing a first movement situation;

fig. 9 is a schematic view of a process of opening movement of the heald frame unit according to the invention for performing a second movement situation;

FIG. 10 is an enlarged view of the shed portion in the first motion of the present invention;

fig. 11 is an enlarged view of the shed portion in the second motion situation of the present invention.

In the figure: 100. a driving unit; 110. a motor; 120. lifting rollers; 130. a traction rope; 140. a first roller; 150. adjusting the roller; 151. adjusting the wheel body; 152. a threaded rod; 153. a bearing; 154. a chute; 155. a roller shaft support; 156. an adjusting nut; 157. a support; 158. a side groove; 159. a communication groove; 160. a second roller; 170. a traction rope pressing plate; 200. a stand unit; 210. an upper cantilever; 211. rib plates; 212. supporting the cantilever; 213. a base is arranged on the upper part; 214. rib plates; 220. a lower support column; 230. a lower cantilever; 231. a lower mounting plate; 300. a heald frame unit; 310. a heald frame body; 311. a first heald frame body; 312. a second heald frame body; 320. heddles; 400. and (3) a shed.

Detailed Description

The following detailed description refers to the accompanying drawings.

Textile machines currently in use mainly utilize mechanical means to spin natural or man-made fibers into textile machines. The weaving process mainly uses mechanical movement to drive two warp threads to alternately and crosswise move to form a shed 400, and then weft threads are introduced into the shed 400. The introduced weft is pressed therein by the warp alternately moving, thus reciprocally performing the actions of making the shed 400, and the weft is introduced, to achieve the weaving process of the fabric. At present, various driving modes can be adopted for weft insertion, the early technology is shuttle weft insertion, and modern loom in factories already adopts modes of air injection, water injection weft insertion or rapier weft insertion. For selvedge type textile machines, which are used for textile edges of fabrics, the weaving mode is often required to be changed to adapt to various process requirements due to various edge position processes. Such a modification requires a change in the size of the shed 400, whereas conventional looms employ a fixed structure, it is difficult to change the size of the shed 400, resulting in an inability to adapt to process adjustments.

The invention in one aspect provides the following embodiments:

the present solution provides a variable opening selvedge mechanism, comprising: the first heald frame body 311 is connected with the first motor through a first traction rope and can move along the guide rail under the drive of the first motor;

The second heald frame 312 is connected with the second motor through a second traction rope and can move along the guide rail under the drive of the second motor;

the first motor and the second motor are configured to rotate in opposite directions to bring about a movement of the first heald frame 311 and the second heald frame 312 in opposite directions to form the shed 400, wherein the movement in opposite directions can be configured to different opposite movement types in case of different based textile processes.

Wherein the reverse movement type at least comprises the following three types:

1. the first heald frame 311 stops moving and the second heald frame 312 moves up and down at a steady speed so that in the case where one part of the warp is absolutely stationary, the other part of the warp moves to form the first type shed 400 at regular intervals.

2. The first heald frame 311 stops moving and the second heald frame 312 moves up and down at a variable speed so that in the case where one part of the warp threads is absolutely stationary, the other part of the warp threads forms the second type shed 400 at variable speed intervals.

3. The first heald frame 311 performs an opposite movement with the second heald frame 312 at the same speed so that the two warp threads move in opposite directions to form the third type shed 400.

In the three motion conditions, the motion conditions of the first motor and the second motor are that

1. The first motor stops moving, and the second motor uniformly performs forward and reverse rotation at a steady speed.

2. The first motor stops moving, and the second motor executes forward and reverse rotation at a variable speed.

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

In the case of the three types of movements described above,

as shown in FIG. 8, which shows the warp motion in the first motion, the time is at t ₀ The first heald frame 311 is parallel to the second heald frame 312, and may be set to the initial state. At time t ₁ The first heald frame 311 remains stationary and the second heald frame 312 moves upward one end distance, at which time the weft thread starts to be drawn (the weft insertion direction is indicated by a fork vertically into the paper in the figure). At time t _top The first heald frame 311 remains stationary and the second heald frame 312 moves up to the highest position, when the weft thread has reached the opposite or near opposite position (indicated by the fork with the outer ring in the figure). At time t _bottom The first heald frame 311 is held stationary and the second heald frame 312 is moved down to the lowest position, and no weft is drawn in at this time (reference is made to the figure where the symbol for drawing in weft is not shown). When the second heald frame 312 moves upwards to be flush with the first heald frame 311 Re-recorded as t ₀ State, then at the next t ₁ (denoted t in the figure) _1ˊ ) Starts to draw in the weft from opposite sides (the weft direction is indicated by the point in the figure that is perpendicular to the plane of the paper). Thereby cycling to achieve the weft insertion process.

Referring to the enlarged view of the portion of the shed 400 in the first motion of fig. 10, the warp threads passing through the first heald frame 311 are stationary due to the stationary first heald frame 311 under the action of the stationary first motor, and the first line segment forming the shed 400 maintains a first angle θ with the horizontal ₁ While the warp yarn passing through the second heald frame 312 is driven by the second motor to keep moving, so that a second varied included angle theta is formed between the second line segment forming the shed 400 and the horizontal plane ₂ And the variation is uniformly varied. The water surface is a surface parallel to the ground. The horizontal plane is taken as a reference, the included angle formed by the line segment above the horizontal plane and the horizontal plane is recorded as a positive value, and the included angle formed by the line segment below the horizontal plane and the horizontal plane is recorded as a negative value. In the case where the weft insertion direction is assumed to be a direction parallel to the ground, reference is made to t in the diagram x ₁ The first included angle theta can be seen from the enlarged view of the included angle state ₁ Preferably a negative value approaching 0 deg.. First included angle theta ₁ Preferably from-10 ° to-2 °. The solution described above is particularly suitable for the process of rapier weft insertion, where the rapier itself is heavy and may fall due to gravity when passing through the shed 400, in which case a first angle θ between the first line of the shed 400 and the horizontal plane is chosen ₁ Designed to be close to 0 deg., so that the first thread segment can form a support for the weft insertion process. Further, the first included angle theta of-10 DEG to-2 DEG is designed according to the scheme ₁ On the one hand, taking into account the thickness of the weft insertion unit (for example, the rapier) itself, and on the other hand, taking into account the maximum drop of this type of weft insertion (which is the smallest during the initial phase of weft insertion, and which gradually increases during the weft thread flying through the shed 400 towards the opposite side, the overall movement being parabolic) a margin of up to-10 ° is thus designed so that the weft thread can achieve a sufficient warp support during the entire movement after emergence. Since the weft insertion angle is substantially fixed,in this movement, the first heald frame 311 is stopped, so that the timing of weft insertion is configured to match the timing when the second angle is positive. Based on the movement of the second heald frame 312, the second angle may change from a positive value to a negative value and then from a negative value to a positive value; or it may change from positive to zero and from zero to positive. The second angle can be adjusted according to the process requirements, and weft insertion is started when the second angle is positive.

As shown in FIG. 9, which shows the warp motion in the second motion, similar to the first motion, at time t ₀ The first heald frame 311 is parallel to the second heald frame 312, and may be set to the initial state. At time t ₁ The first heald frame 311 remains stationary and the second heald frame 312 moves upward one end distance, at which time the weft thread starts to be drawn (the weft insertion direction is indicated by a fork vertically into the paper in the figure). At time t _top The first heald frame 311 remains stationary and the second heald frame 312 moves up to the highest position, when the weft thread has reached the opposite or near opposite position (indicated by the fork with the outer ring in the figure). At time t _bottom The first heald frame 311 is held stationary and the second heald frame 312 is moved down to the lowest position, and no weft is drawn in at this time (reference is made to the figure where the symbol for drawing in weft is not shown). When the second heald frame 312 moves up to be flush with the first heald frame 311, it can be re-noted as t ₀ State, then at the next t ₁ (denoted t in the figure) _1ˊ ) Starts to draw in the weft from opposite sides (the weft direction is indicated by the point in the figure that is perpendicular to the plane of the paper). Thereby cycling to achieve the weft insertion process.

First included angle theta in second motion condition ₁ Remain unchanged and are preferably-10 ° to-2 °. The second angle in the case of the second movement is different from the first movement in the same time. Referring to fig. 10 and 11, there is shown at t, respectively ₁ Under the state and at t _top A second included angle theta between the first movement and the second movement in the state ₂ For convenience of description, t will be ₁ Second included angle theta in state ₂ Recorded as a second initial included angle theta _2s Will t _top Second included angle theta in state ₂ Recorded as a second final included angle theta _2e . Further respectively recording the second initial included angle of the first movement as theta _2s1 The second initial included angle of the second motion is recorded as theta _2s2 The method comprises the steps of carrying out a first treatment on the surface of the The second final included angle of the first movement is recorded as theta _2e1 The second final included angle of the second motion is denoted as θ _2e2 . From the comparison in the figure, it can be derived that t is at the beginning of weft insertion ₁ In the state, the second initial included angle theta of the second movement _2s2 A second initial included angle theta greater than the first movement _2s1 This is because the second motion is a variable speed motion in this scheme, at t ₀ To t ₁ In the process, the second initial angle for passing the weft thread in the second movement situation is larger than in the first movement situation. Referring again to the comparison, the final included angle θ of the second motion _2e2 Equal to the second final included angle theta of the first movement _2e1 Description of the second motion of the Transmission of the present solution at t ₁ To t _top In the process, the movement speed of the second heald frame 312 is reduced so that the second final included angle theta of the two movements _2e Equal. In the second movement condition of the scheme, the second angle changes the angle size in a speed change mode of quickly becoming larger and then slowly becoming larger, and the movement mode is suitable for the condition that the weft insertion weight is larger (for example, rapier weft insertion) but the weft weight is relatively smaller. The first movement is adapted to the case where the weft thread of the rapier weft insertion is heavy. The weight division of the specific weft thread can be manually divided, and the scheme gives an example that under the same weft insertion length, the weft insertion is divided into weft thread types suitable for the first movement condition, wherein the final dropping amount of the weft insertion is more than 3 cm; the weft insertion is finally divided into weft types adapted to the second movement situation by a drop amount smaller than 3 cm. The purpose of dividing the weft thread adapted to the second type is that such weft thread, due to its relatively light weight, has a higher speed at the exit, in order to avoid that the shed 400 is too small at the exit of the weft thread, the second movement creates the shed 400 at a faster speed than the first movement, and then in order to avoid that the structural flick generated by the movement of the shed 400 at the end of the movement of the shed 400, when the weft thread has moved in the shed 400 and is approaching the opposite end point, affects the travel of the weft thread In the state, the second movement moves at a speed lower than that of the first movement at the end of the movement of the shed 400 to stabilize the shed 400. The present solution enables a more stable shed 400 manufacture for this type of weft thread to be achieved by a first motor and a second motor which can be driven separately.

The third motion is similar to the motion of the prior art, in that the first and second segments of the shed 400 move away from each other such that the first and second angles are substantially opposite values to each other at the same time (e.g., the second angle is negative when the first angle is positive). The third movement condition is suitable for the weft insertion mode of air injection and water injection, the weft weight is lighter, and the dropping amount is small in the weft insertion process.

In view of the above, the present invention provides a variable opening selvedge mechanism and a loom having the same. The variable opening selvedge mechanism can be used with a textile machine. Referring to fig. 1, fig. 1 is a schematic view showing the overall structure of the variable opening selvedge mechanism of the present invention, which has a driving unit 100, a holder unit 200 and a heald frame unit 300. The holder unit 200 constitutes a structural body of the selvedge mechanism, and has an upper cantilever 210, a lower support 220 and a lower cantilever 230, the upper cantilever 210 being connected to the lower cantilever 230 by the lower support 220. The upper cantilever 210 and the lower cantilever 230 are substantially formed in a bar shape and have at least two ends. The upper cantilever 210 is connected to the lower support 220 near one end thereof, and the lower cantilever 230 is connected to the lower support 220 near one end thereof, so that the upper cantilever 210, the lower support 220, and the lower cantilever 230 are formed as a whole in a substantially C-shape as viewed from the whole. The lower leg 220 is generally configured as a double support structure, i.e., it is provided with two sub-legs, one of which is longer than the other. The longer sub-struts are connected between the upper and lower cantilevers 210 and 230, respectively, and the shorter sub-struts are connected to the lower cantilevers 230 at only one end.

The other end of the lower cantilever 230, which is connected to the lower support column 220, is connected to a lower mounting plate 231. The lower mounting plate 231 is generally in a planar plate block structure, and screw holes can be formed in the lower mounting plate 231, so that screws can conveniently pass through the lower mounting plate 231. The lower mounting plate 231 is used to mount the present selvedge mechanism on the frame of the weaving machine. The selvedge mechanism can be used with the existing loom equipment, the lower mounting plate 231 of the selvedge mechanism is connected to the frame of the loom equipment through bolts, and the selvedge mechanism can be mounted on the loom through adjusting the mounting position of the cross waist hole on the loom.

The other end of the upper cantilever 210, which is far from the lower support column 220, is connected with a rib plate 211, and a supporting cantilever 212 is connected below the rib plate 211. The support cantilever 212 has a substantially bar-like structure and is connected to the rib 211 in a vertical direction. Preferably, the rib 211 may be provided with at least two, i.e., a first rib and a second rib, and both the ribs 211 are connected to the upper cantilever 210 and the support cantilever 212. The use of the double-ribbed plate 211 can promote the stability of the overall structure.

The support cantilever 212 is connected to the upper mounting base 213 at the other end thereof, which is connected to the rib 211, and the upper mounting base 213 is higher than the lower mounting plate 231 in the vertical direction after the assembly is completed. The upper mounting base 213 is used to mount the mechanism to a textile machine. The upper mounting base 213 is generally of a U-shaped plate-like structure with the U-shaped bottom connected to the end of the support cantilever 212 such that the opening direction of the U-shaped plate is a vertically downward direction in the vertical direction. Screw holes may be formed on both side plates of the U-shaped plate of the upper mounting base 213, so that the upper mounting base 213 may be conveniently mounted to the textile machine by screws passing through the screw holes. Preferably, the support cantilever 212 is provided with ribs 214. The rib 214 forms a profiled section on the support cantilever 212 to enhance the rigidity of the support cantilever 212.

As shown in fig. 2, the driving unit 100 is substantially disposed on the upper cantilever 210 and the rib 211. The driving unit 100 has a motor 110 and a hoist roller 120. The motor 110 has a rotary output shaft, and the motor 110 is capable of rotating the rotary output shaft when energized. The lifting roller 120 is generally constructed in a wheel structure, and the wheel is connected to a rotation output shaft of the motor 110 in a shaft direction transmission manner, so that the lifting roller 120 can be driven to roll by the motor 110. The transmission combination formed by the motor 110 and the lifting roller 120 is arranged on a placing flat plate connected with one end of the rib plate 211 far away from the ground. The placement plate is generally constructed as a flat plate structure that is attached to the other side of the rib plate 211, which is away from the support cantilever 212, with its plate surface parallel to the horizontal direction. The support plate provides a location for the support mounting of the combination of motor 110 and lifting roller 120.

The driving unit 100 further includes a traction rope 130, and the traction rope 130 is wound around the hoist roller 120 such that the traction rope 130 can be released and wound up as the hoist roller 120 rotates. The other end of the traction rope 130, which is not wound onto the lifting roller 120, is sequentially wound around the first roller 140, the regulating roller 150 and the second roller 160, which are disposed on the upper boom 210, wherein the traction rope 130 is wound around the lower half edge of the first roller 140, around the upper half edge of the regulating roller 150 and around the upper half edge of the second roller 160. The first roller 140, the adjusting roller 150 and the second roller 160 are sequentially arranged on the upper cantilever 210 according to the direction that the end close to the motor 110 points to the end close to the lower support 220, wherein the shafts of the first roller 140 and the second roller 160 are arranged in the hollow space of the upper cantilever 210, and most of the wheel bodies of the first roller 140 and the second roller 160 are also arranged in the hollow space.

Fig. 3 is a detailed structural view of the regulating roller 150. The regulating roller 150 has a regulating wheel body 151, a roller shaft, bearings 153, a chute 154, a roller shaft support 155, a seat 157, a regulating nut 156 and a spring collar. One end of the roller shaft is sleeved with a bearing 153, and the outer side of the bearing 153 is sleeved with an adjusting wheel body 151, so that the adjusting wheel body 151 has a rotatable degree of freedom through the rotation performance of the bearing 153. The roller shaft passes through the bearing 153 and the regulating wheel body 151, and a spring collar is arranged on the outer side of the roller shaft, so as to limit the movement of the regulating wheel body 151 along the axial direction. The other end of the roller shaft is sleeved by a roller shaft support 155, and the roller shaft support 155 is disposed in the chute 154 such that the regulating wheel body 151 connected to the roller shaft support 155 can move in the chute 154. The chute 154 has a substantially elongated structure to provide a sufficient moving distance of the adjustment wheel 151. The chute 154 is arranged along the vertical direction, so that the adjusting wheel body 151 can move up and down along the vertical direction, the part of the upper cantilever 210, which is provided with the adjusting roller 150, is provided with a hollow, and at least the adjusting wheel body 151 is positioned in the hollow, so that the upper cantilever 210 can not block the adjusting roller 150 from moving up and down along the vertical direction. The side of the chute 154 facing away from the setting roller is provided with a seat 157. The bracket 157 is used to connect the adjustment roller 150 to the upper cantilever 210. The stand 157 may be generally configured as a U-shaped structure that is clamped at both ends to the upper cantilever 210 to form a fixation. An adjusting nut 156 is arranged in the chute 154, and the adjusting nut 156 is used for adjusting the up-down position so as to tension the traction rope 130, so that the movement distortion caused by shaking of the traction rope 130 is avoided. The roller axle support 155 is generally of a block-like configuration having a width that corresponds to the slot width of the runner 154 such that the roller axle support 155 is capable of sliding in the runner 154. The roller shaft support 155 is provided with openings allowing the roller shaft to pass through, through which a fixed connection can be made to the roller shaft. As shown in fig. 6, a threaded rod 152 is coupled to the roller shaft support 155, and the threaded rod 152 is radially sized to correspond to the groove width of the sliding groove 154, and the threaded rod 152 is disposed in the sliding groove 154 such that it can move up and down along the sliding groove 154. Threaded rod 152 passes downwardly out of chute 154 away from the other end connected to roller shaft support 155. At least two adjustment nuts 156 are provided on the threaded rod 152 portions on either side of the position where the threaded rod 152 passes out of the chute 154. By adjusting the position of the two adjustment nuts 156 on the threaded rod 152, the movement of the threaded rod 152 within the runner 154 may be adjusted so that the position of the adjustment wheel 151 may be adjusted up and down. By adjusting the up-down position of the roller shaft, the traction rope 130 wound on the adjusting wheel body 151 can move up and down, so that the wrap angle of the traction rope 130 on the first roller 140 and the second roller 160 is adjusted, the traction rope 130 is ensured to maintain a better tensioning state in a service period, and the purpose of inhibiting movement distortion caused by vibration of the traction rope 130 is achieved. The traction rope 130 adopts a V-shaped winding mode, so that the service life of the traction rope 130 is ensured. As shown in fig. 4 and 5, the traction rope 130 is pressed against the wheel by the traction rope pressing plate 170 to prevent the traction rope 130 from slipping. The rolling groove of the roller is provided with a communicating groove 159 which communicates with a side groove 158 arranged on the side edge of the roller. The rope head of the traction rope 130 is threaded into the side groove 158 from the communicating groove 159 of the rolling groove. The pulling-cord presser plate 170 can form a positive fit with the side slot 158 to press the ends of the pulling cord 130 threaded into the side slot 158. Screw holes may be provided in the side slots 158, and screw holes may also be provided in corresponding positions on the traction rope press plate 170, so that the traction rope press plate 170 may be stably pressed in the side slots 158 by mounting screws to the aligned screw holes.

As shown in fig. 7, preferably, two sub-struts of the lower strut 220 are provided with sliding rails, and two side sliding rails are respectively provided with a sliding rail, and the sliding rails have a block structure and can slide in the sliding rails. The heald frame unit 300 is interposed between the guide rails provided at both sides. The heald frame unit 300 comprises at least two heald frames 310. The heald frames 310 are generally constructed in a frame-shaped structure with a frame opening provided therebetween for allowing an object to pass therethrough, the two heald frames 310 being disposed in tandem in a horizontal direction between guide rails in which pulleys are disposed, and edges of the heald frames 310 being slidably disposed on the pulleys so that the heald frames 310 can move on the pulleys of the guide rails.

The traction rope 130 has at least two traction ropes, which are respectively connected to the heald frame body 310, so that the traction rope 130 can drive the heald frame body 310 to move along the pulleys, in other words, to move up and down in the vertical direction. At least one heddle 320 is provided in the frame of the heald frame body 310 in a vertical direction, and the heddle 320 has a substantially thin strip-like structure as shown in fig. 7. The upper and lower ends of the heald wires 320 are connected to the upper and lower sides of the heald frame 310, respectively. Heddle 320 is provided with heddle eyes which are generally configured as a hollow ring structure to allow warp yarns to pass therethrough. Preferably, the heddle eyelet is provided in the middle of the heddle 320. Since the heald 320 is connected to the heald frame 310, the heald frame 310 will also drive the heald 320 to move when driven by the traction rope 130, so that the warp yarn passing through the heald 320 moves in the vertical direction. By penetrating a plurality of parallel warp threads into a plurality of heddle eyes provided in two heddle frames 310, respectively, the plurality of parallel warp threads form an interdigitation in the vertical direction when the two heddle frames 310 move respectively. The opening formed by the warp threads crossing each other is called a shed 400, and the process is called an opening movement, and reference is made to fig. 8. The shed 400 is used to thread a weft thread, a process called weft insertion movement. The structure for penetrating the weft is derived from the loom, and the existing beat-up driving structure has various types, such as a fly, a jet, a water jet, and a rapier weft insertion.

At least two motors 110 are combined with the two sets of lifting rollers 120 to form driving sets, at least two traction ropes 130 are respectively combined with the two driving sets, and the other ends of the two traction ropes 130 are respectively connected to the two heald frames 310, so that the two heald frames 310 can be respectively driven. When the selvedge spinning is performed, the two motors 110 rotate forward and backward at the same time to drive the traction ropes 130 to stretch and retract, so that the two heald frames 310 move in opposite directions at the same time, and the two warps passing through the heald eyes move up and down in opposite directions in the vertical direction, thereby forming the shed 400, and the flyer passes through the shed 400 again, so that spinning is realized.

Further, the present invention proposes a preferred embodiment of the selvedge control mechanism for the problem that the prior art spinning apparatus cannot adjust the shed 400 according to different weaving requirements of the fabric. In this embodiment, the operating parameters of the motor 110 can be adjusted and include a processing unit for performing control operations. The processing unit is electrically connected to the motor 110 to adjust the operation of the motor 110. Basically, the processing unit controls the speed of the forward and reverse rotation of the two motors 110 to adjust the time for the formation of the shed 400, the faster the motor 110 speed, the shorter the time for the formation of the shed 400, and conversely, the slower the motor 110 speed, the longer the time for the formation of the shed 400. The processing unit may also control the number of turns of each of the two motors 110 to control the size of the shed 400, the more turns of rotation the greater the extent to which the traction rope 130 is stretched or contracted, the greater the shed 400, and conversely the fewer turns of rotation the lesser the extent to which the traction rope 130 is stretched or contracted, the lesser the shed 400. The basic solution of the present embodiment is therefore able to further control the movement of the heald frame body 310 by adjusting the operating parameters of the motor 110, thus achieving the purpose of adjusting the size and the formation time of the shed 400 based on the actual textile requirements. In the debugging process of weft feeding and weft receiving of the loom, the opening is required to be matched with the beating-up action and the warp feeding action to ensure the machine debugging, and the opening is formed relatively slowly at the moment; the loom enters a normal weaving stage, and the size and speed of the opening are required to be adjusted according to the types of yarns, patterns and weaving of fabrics and are matched with other loom movements. Compared with the prior art that the heald frame is driven by fixed asynchronous ellipsoidal linkage, the invention innovatively adopts the traction rope 130 for driving, and the size and the forming time of the shed 400 can be adjusted according to different spinning conditions because the movement of the traction rope 130 driven by the motor 110 can be adjusted.

Preferably, the following advanced embodiments are also given, and for convenience of description, the two heald frames 310 are referred to as a first heald frame 311 and a second heald frame 312, respectively, the motor 110 driving the first heald frame 311 and the second heald frame 312 to move, respectively, is referred to as a first motor and a second motor, and the traction rope 130 connected to the first heald frame 311 and the second heald frame 312, respectively, is referred to as a first traction rope and a second traction rope. In case the weft insertion unit is of the first type and the weft insertion stability is at a first level, the first motor stops moving and the second motor performs the forward and reverse rotation action uniformly at a steady speed, so that in case a single part of the warp thread is absolutely stationary, another part of the warp thread moves to form a first type shed 400 at regular intervals. In this case, a certain motor 110 is controlled not to operate so that its corresponding warp thread remains stationary while the weft insertion unit passes over the portion of stationary warp thread, which can provide a certain supporting effect for the weft insertion unit. The first type of weft insertion unit may be divided in advance, and the division criterion may be based on the structural type of the weft insertion unit and the type of spinning performed. In the first type, the weft insertion unit structure is provided with a feature of heavy weight, which is susceptible to external forces, such as a rigid rapier weft insertion structure. The type of weaving performed can be determined by the weight of the weft thread used for weft insertion and can be broadly classified into light-weight weaving and heavy-weight weaving, and the type of weaving conforming to the first type is heavy-weight weaving. Weft insertion stability is the stability of the weft unit as it is shuttled between the shed 400, and can be characterized by a vertical displacement curve during each shuttle, which displacement can be measured by a sensor, the smaller the displacement in the vertical direction, the higher the stability thereof. Due to the different structural types of the weft insertion units and the different types of the weft yarns to be woven, the weft insertion stability is different, and even the weaving process of the same fabric may cause the weft insertion stability to change due to the halfway process change. The higher weft insertion stability means that weft insertion and beating-up can be performed more quickly and uniformly, and the weaving speed is higher; the low weft insertion stability does not mean that the weaving process is defective, since some weaving processes (e.g. heavy selvedge) cannot avoid this problem, but the opening process of the warp threads has to be modified accordingly. The weft insertion stability at the first level indicates a higher stability of the weft insertion process, and the weft insertion unit is in a substantially horizontal movement. The warp opening parameter can be intelligently adjusted based on the weft insertion process, the warp opening parameter adjusting device can be suitable for special situations of heavy weft yarns in spinning, for example, under the condition of adopting a weft insertion unit structure of rigid rapier weft yarns, the rapier needs to be guaranteed to be provided with a certain supporting force for heavy spinning of a large reed width so as to prevent the rapier from shaking, weft insertion angle change and other problems caused by heavy weft yarns.

In case the weft insertion unit is of the first type and the weft insertion stability is at the second level, the first motor stops moving and the second motor performs a forward and reverse rotation action at a variable speed, so that in case a single part of the warp threads is absolutely stationary, another part of the warp threads forms a shed 400 of the second type at variable speed intervals. When the weft insertion stability is at the second level, the weft insertion unit is poor in stability, and the problem of shaking in the vertical direction exists, and at this time, the weft insertion time needs to be properly adjusted. The motion of the weft insertion unit is not selected to be adjusted in the scheme, and more problems can be brought to adjustment because the motion of the weft insertion unit is unstable. The solution chooses to adjust the movement of the first motor and the second motor so that the procedure of the stoma is adjusted. Based on the above, when the weft insertion stability is poor, if the weft insertion according to the original rhythm possibly causes larger variation of the weft insertion contact angle, the weft insertion position is different or the weft insertion generates jumping; and also the support of the weft insertion unit if the ostomy speed becomes fast. The present invention thus adjusts the variable speed movement of the second motor so that the speed of the stoma is increased at the moment of weft insertion contact and is slowed down as the weft insertion unit passes through the shed 400, so as to meet both the requirements of weft insertion contact angle and stable support of weft insertion.

In case the weft insertion unit is of the second type, the first motor and the second motor perform opposite movements at the same time and rotate at the same speed, so that the warp threads of the two parts move in opposite directions to form the third type shed 400. The third type of shed 400 of the same shed 400 size is formed for a shorter time than the first type of shed 400 at the same rotational speed. The second type of weft insertion unit is suitable for most textile requirements, such as flexible rapier weft insertion, jet, water jet weft insertion structures. In this case, the first heald frame 311 and the second heald frame 312 are controlled to alternately move, and the third shed 400 is formed in a shorter time to improve the weaving efficiency.

Preferably, the invention also concerns the problem that, when the weaving process is changed (whether it is a change of weaving task or a change of weaving process in the same weaving task), the weaving machine automatically switches the drive control parameters of the heald frame according to a program. The scheme finds that the elastic change generated by the structure has elastic property in the switching process, so that the spinning effect is influenced, and especially the spinning effect in a short period of time in the switching moment is influenced. The traction rope 130 is adopted as a structure for driving the heald frame, so that the motion parameters of the heald frame can be adjusted almost steplessly to adapt to different spinning requirements, but similar to spinning threads, the elastic variation condition exists. The elastic change refers to that when the original motion state is changed due to the elastic deformation of the driving structure, the driving structure does not jump to a new motion state directly, but has a certain swing interval under the action of the elastic deformation, and the change of the time period is called elastic change. After a period of time, the elastic variation may gradually decrease until the driving structure drives the heald frame body 310 to weave in a stable new motion state. However, the quality of the weft yarn woven in the elastic variation section may have defects such as skew and uneven density. The present invention therefore proposes to provide a sensor to determine the elastic variation during the movement of the opening, and to move the adjustment roller 150 synchronously based on the elastic variation, so as 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 variation is attenuated to an acceptable level within the expected range. The opening movement means that the motor 110 drives the traction rope 130 to drive the heald frame, and then drives the warp threads on the heald frame to move up and down in the vertical direction. The elastic variation can be characterized based on an elastic displacement curve, the displacement being acquired by a vision sensor or displacement sensor acquisition. The elastic change collection object of the opening motion can be the hauling rope 130 and/or the heald frame, further, the warp yarn has certain elastic change, and if the elastic change of the warp yarn in the process of changing is expected to be considered further, the warp yarn can also be taken as the collection object. By acquiring the displacement curve, the numerical characteristics of the elastic fluctuation can be obtained, taking the shaking in the longitudinal direction as an example, the shaking amplitude (converted into displacement) of the heald frame in the process after the change is known according to the program setting, and the rest data excluding the known displacement data in the acquired displacement curve data is abnormal data caused by the elastic fluctuation, and the movement characteristics of the elastic fluctuation, such as the shaking amount, can be obtained according to the data. After the elastic change feature is acquired, the adjustment roller 150 is adjusted. According to the above, the traction rope 130 is wound around the first roller 140, the second roller 160 and the regulating roller 150, and V-shaped winding is formed by the regulating roller 150, and the wrap angle of the traction rope 130 on the first roller 140 and the second roller 160 can be changed by adjusting the position of the regulating roller 150 in the vertical direction, thereby adjusting the tension of the traction rope 130 on the rollers. After the elastic variation feature is acquired, the vertical height of the adjustment roller 150 is adjusted based on the feature. Compared with the prior art, the invention can adjust the adjusting roller according to the elastic change characteristic. Based on the above distinguishing technical features, the problems to be solved by the present invention may include: how to solve the weft quality defect of the textile caused by the elastic change of the structure in the process of switching the heald frame driving control parameters of the textile machine so as to improve the selvedge textile effect. In this regard, in a preferred embodiment, the regulating roller 150 is controllably movable in the chute 154, which may be driven by the motor 110. The spring rate characteristic is functionally related to the position of the adjustment roller 150, so that the spring rate can be eliminated by automatically adjusting the adjustment roller 150. The scheme can enable transition of the conversion process in spinning to be smoother, especially aims at the situation of changing the spinning process in the same textile spinning process, can remarkably reduce the problem of poor effect of weaving in and out of weft caused by elastic change in the changing process, and enables the spinning process to be carried out stably.

The present solution also provides a weaving machine with a variable open selvedge mechanism, which may comprise a drive unit 100, a weft insertion unit and a thread collecting unit, and further comprises a variable open selvedge mechanism as described in the above embodiments, which variable open selvedge mechanism is arranged as a component part in the weaving machine, the thread collecting unit being arranged to finish a yarn to be woven, the drive unit 100 being arranged to drive the weft insertion unit and to drive the thread collecting unit to finish a woven yarn. The weft insertion unit shuttles the weft from the shed 400 to weave the weft into the warp, thereby achieving a selvedge process. The weft insertion unit may be a fly, jet, water jet or rapier weft insertion structure.

It should be noted that the above-described embodiments are exemplary, and that a person skilled in the art, in light of the present disclosure, may devise various solutions that fall within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the invention is defined by the claims and their equivalents. The description of the invention encompasses multiple inventive concepts, such as "preferably," "according to a preferred embodiment," or "optionally," all means that the corresponding paragraph discloses a separate concept, and that the applicant reserves the right to filed a divisional application according to each inventive concept. Throughout this document, the word "preferably" is used in a generic sense to mean only one alternative, and not to be construed as necessarily required, so that the applicant reserves the right to forego or delete the relevant preferred feature at any time.

Claims

1. A variable opening selvedge mechanism, comprising

The first heald frame body (311) is connected with the first motor through a first traction rope and can move along the guide rail under the drive of the first motor;

the second heald frame body (312) is connected with a second motor through a second traction rope and can move along the guide rail under the drive of the second motor;

the first motor and the second motor are configured to rotate in opposite directions so as 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 directions of movement can be configured into different opposite movement types under the condition of different textile processes.

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

3. The mechanism of any of the preceding claims, characterized in that the first and second motors are configured to be able to be adjusted in rotational speed and number of rotations, so that the opening size and formation time of the shed (400) can be adjusted.

4. The mechanism according to any of the preceding claims, further comprising a stand unit (200), said stand unit (200) being adapted to integrally mount the mechanism on a weaving machine, said stand unit (200) comprising an upper cantilever (210), a lower support (220) and a lower cantilever (230), said upper cantilever (210) being connected to said lower cantilever (230) by means of a lower support (220), said lower support (220) being provided with a sliding rail, said sliding rail being connected to said sliding rail.

5. The mechanism according to any of the preceding claims, characterized in that the end of the upper cantilever (210) that is remote from the lower support (220) is provided with a platform for mounting the motor (110) and the lifting roller (120), the first heald frame (311) and the second heald frame (312) are located between the guide rails of the lower support (220), the upper cantilever (210) is provided with a first roller (140), a regulating roller (150) and a second roller (160) in sequence along the direction from the end that is close to the motor (110) to the end that is close to the heald frame (310), and the traction rope (130) bypasses the first roller (140), the regulating roller (150) and the second roller (160) in sequence and is connected to the heald frame (310).

6. The mechanism according to any of the preceding claims, wherein the traction rope (130) is wound around the first roller (140), the regulating roller (150) and the second roller (160) in sequence in a V-winding manner.

7. The mechanism of any of the preceding claims, wherein the adjustment roller (150) comprises an adjustment wheel body (151), a chute (154), a support (157) and an adjustment nut (156), one end of the axle of the adjustment wheel body (151) being arranged in the chute (154) such that the adjustment wheel body (151) can move within the chute (154), the support (157) being arranged to connect the adjustment roller (150) to the upper cantilever (210), the adjustment nut (156) being arranged in the chute (154) to adjust the length of the adjustment wheel body (151) that can move within the chute (154).

8. The mechanism according to any of the preceding claims, characterized in that at least one heddle (320) is arranged in the heald frame (310), that heddle eyes are arranged on the heddles (320), that at least two parts of the weaving warp threads respectively pass through the heddle eyes of different heald frames (310), so that the two parts of the weaving warp threads can alternately form a shed (400) when the first heald frame (311) and the second heald frame (312) respectively move.

9. A loom having a variable opening selvedge mechanism, said loom comprising a fly and a variable opening selvedge mechanism, said variable opening selvedge mechanism comprising: the first heald frame body (311) is connected with the first motor through a first traction rope and can move along the guide rail under the drive of the first motor;

the first and second motors are configured to rotate in opposite directions to drive the first and second heald frames (311, 312) to move in opposite directions to form a shed (400), the shuttles reciprocating from the shed (400) to weave a weft thread.

10. The weaving machine according to claim 9, characterized in that the first and second motor are configured to be able to be adjusted in rotation speed and number of rotations so that the opening size and formation time of the shed (400) can be adjusted.