CN108486742B - Yarn guide restraint fork, weft accumulator and weaving method - Google Patents

Abstract

The application relates to the technical field of weaving, in particular to a yarn guiding restraint fork, a weft accumulator and a weaving method. The yarn guiding restraint fork comprises a mounting piece, a first supporting rod, a second supporting rod and a restraint piece; the weft accumulator comprises the yarn guide restraint fork; the weaving method is applied to the weft accumulator and comprises the following steps: s1, preparing a weft accumulator; s3, weft yarns are introduced; s5, pre-storing weft yarns; s7, releasing the weft yarns; s9, restraining the weft yarns; the loop of steps S5-S9 is repeated. The weaving method provided by the application is adopted to complete weaving work, the tension peak value of weft yarns during weft insertion can be reduced, the cloth cover quality is improved, and the end breakage rate is reduced.

Description

Yarn guide restraint fork, weft accumulator and weaving method

Technical Field

The application relates to the technical field of weaving, in particular to a yarn guiding restraint fork, a weft accumulator and a weaving method.

Background

In the weaving process, a weft accumulator is generally needed to be adopted to store weft yarns in advance, so that in the subsequent weaving process, a certain driving force is applied to the weft yarns through a weft insertion body, and the weft yarns wound on the weft accumulator in advance are released to a preset position freely. However, in the flying process of the weft yarn, even if the weft yarn pre-stored in the weft accumulator is released, the flying weft yarn still has a large moving speed, if the weft yarn is stopped suddenly, a flaw may appear on the cloth surface, or the weft yarn may be torn off, which is not favorable for the efficient and high-quality continuous weaving operation.

Disclosure of Invention

The application provides a lead yarn and restrict fork, weft accumulator and weaving method to solve weaving in-process woof at present and be torn easily, be unfavorable for weaving the problem that work lasts and go on.

The application provides a first aspect of leading yarn restraint fork, and it includes:

the mounting piece comprises a sleeving part, a first fixing part and a second fixing part, and the first fixing part and the second fixing part are fixedly connected to two sides of the sleeving part; the sleeving part is provided with a mounting hole, and the mounting piece is arranged to be inserted on a driving shaft of the weft accumulator through the mounting hole;

the first supporting rod comprises a first body and a supporting rod, the first body is connected with the first fixing part and is obliquely arranged relative to the axis of the mounting hole, the supporting rod extends from the first body along the axis direction of the mounting hole, and a fixing part extends from the end part of the supporting rod;

the second supporting rod comprises a second body and a yarn outlet part, the second body is connected with the second fixing part, the second body is obliquely arranged relative to the axis, and the yarn outlet part is connected with the second body;

and the restraining piece is arranged on the fixing part and is provided with a yarn guiding restraining ring hole for guiding and restraining the weft yarns.

The second aspect of this application provides a weft accumulator, and it includes casing, servo drive system, creel, divides the yarn device and the aforesaid leads yarn and restricts the fork, servo drive system the creel divide the yarn device all install in the casing, lead yarn and restrict the fork set up in the casing with between the creel.

A third aspect of the present application provides a weaving method applied to the weft accumulator described above, including:

s1, providing the weft accumulator, wherein the weft accumulator comprises a shell, and a servo drive system, a creel and a yarn guide restraint fork which are arranged on the shell;

s3, introducing weft yarns, wherein the weft yarns penetrate through the rear shaft hole of the shell and penetrate out of the yarn outlet hole of the yarn outlet part through the inner space of the second body of the yarn guide restraint fork, and penetrate through the yarn guide restraint ring hole of the yarn guide restraint fork after being pre-wound on the yarn frame for 1-5 circles;

s5, pre-storing the weft yarns, wherein the yarn guide restraint fork rotates to drive the weft yarns to wind a plurality of circles on the creel;

s7, releasing the weft yarns, wherein the weft yarns wound on the creel are freely released under the action of the weft insertion body;

s9, restraining the weft yarns, wherein the weft yarns in the free release state drive the weft yarns wound on the creel to be gradually released and are tensioned in the yarn guide restraining ring holes, and the yarn guide restraining forks apply restraining force to the weft yarns so as to reduce the flying speed of the weft yarns;

the loop of steps S5-S9 is repeated.

Preferably, step S1 includes:

s11, assembling the weft accumulator;

and S13, inputting the length of the weft yarn pre-stored on the weft accumulator in a single time.

Preferably, step S5 further includes:

and adjusting the weft yarns, and enabling the yarn dividing device to creep to drive the weft yarns wound on the creels to be distributed at preset intervals from the end parts of the creels, far away from the rear part of the shell.

Preferably, step S5 is specifically:

s51, the yarn guide restraint fork rotates at a set speed at a constant speed so as to wind a plurality of circles of weft yarns on the creel; and the yarn dividing device creeps to drive the weft yarns wound on the creels to be distributed at preset intervals from the end parts of the creels far away from the rear part of the shell.

Preferably, step S9 is followed by:

and S10, controlling the yarn stopping needle to fall down after the released weft yarn reaches the preset length so as to prevent the weft yarn from being released continuously.

Preferably, the step S7 includes:

s71, controlling the lifting of the yarn stopping needle;

s73, releasing the weft yarns.

Preferably, the step S73 is specifically:

s731, freely releasing the weft yarn under the action of gas or liquid with set speed.

Preferably, step S9 includes:

s91, the weft yarn in the free release state drives the weft yarn wound on the creel to move and is tensioned on the yarn guide restraint fork;

s93, the speed of the weft yarn in the free release state is reduced;

s95, cutting off the weft yarn between the yarn guiding body and the creel.

The technical scheme provided by the application can achieve the following beneficial effects:

in the weaving method provided by the application, the weft yarns pass through the yarn guiding restraining ring holes of the yarn guiding restraining forks in advance, in the weaving process, a certain amount of weft yarns are pre-stored on the creel, then the weft yarns pre-stored on the creel are freely released to the preset position under the action of the weft insertion body, and when the weft yarns on the creel are tensioned in the yarn guiding restraining ring holes, the yarn guiding restraining forks generate a certain restraining effect on the weft yarns in a free release state, so that the flying speed of the weft yarns is gradually reduced, and when the weft yarns are stopped to be released, the tension peak value of the weft yarns is relatively small, so that flaws are prevented from appearing on a cloth surface, or the weft yarns are torn off, and the weaving work is ensured to be smoothly carried out.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic structural view of a yarn guiding restraint fork according to an embodiment of the present application;

fig. 2 is an exploded view of a yarn guide restraint fork according to an embodiment of the present disclosure;

figure 3 is a side view of a yarn guide restraint fork provided in accordance with an embodiment of the present application;

FIG. 4 is a schematic view showing a part of the structure of a weft accumulator provided in the embodiment of the present application;

FIG. 5 is a flow chart of a weaving method provided by an embodiment of the present application;

FIG. 6 is a flow chart of another weaving method provided in embodiments of the present application;

FIG. 7 is a flow chart of yet another weaving method provided by an embodiment of the present application;

FIG. 8 is a flow chart of yet another weaving method provided by an embodiment of the present application;

FIG. 9 is a flow chart of yet another weaving method provided by an embodiment of the present application;

FIG. 10 is a flow chart of yet another weaving method provided by an embodiment of the present application;

FIG. 11 is a flow chart of yet another weaving method provided by an embodiment of the present application;

fig. 12 is a flow chart of another weaving method provided in the embodiments of the present application.

Reference numerals:

1-a shell;

2-a mounting member;

22-a sheathing part;

222-mounting holes;

224-a cambered surface avoiding part;

24-a first fixed part;

242-insertion holes;

26-a second fixed part;

262-locking holes;

28-screws;

4-a first strut;

42-a first body;

422-clamping section;

44-a support bar;

46-a holding portion;

462-a holding hole;

6-a second strut;

62-a second body;

64-a yarn take-off part;

642-yarn outlet;

8-a restraint;

82-a holding rod;

84-a yarn guide;

842-yarn guiding restraining ring holes;

844-scarf holes;

9-a creel;

10-the weft yarn;

11-a splitting device.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

As shown in fig. 1-3, the present embodiment provides a yarn guide restraint fork that is mounted on a storage device as shown in fig. 4 for storing a weft yarn 10 during weaving. The yarn guiding restraint fork comprises a mounting piece 2, a first supporting rod 4, a second supporting rod 6 and a restraint piece 8, wherein the mounting piece 2 comprises a sleeving part 22, a first fixing part 24 and a second fixing part 26, the sleeving part 22 is provided with a mounting hole 222, the mounting piece 2 can be inserted and fixed on a driving shaft (not shown in the figure) of a weft accumulator through the mounting hole 222 in the mounting process of the yarn guiding restraint fork, and correspondingly, the mounting hole 222 can be arranged into a special-shaped hole to ensure that the mounting piece and the driving shaft can form a relatively static relation; the first fixing part 24 and the second fixing part 26 are both fixedly connected to two sides of the sheathing part 22, and the first fixing part 24 and the second fixing part 26 are used for fixing the first strut 4 and the second strut 6 respectively; specifically, the mounting member 2 may be formed by integral molding to ensure that the first fixing portion 24 and the second fixing portion 26 form a fixed connection relationship with the sheathing member 22, or may be fixedly connected to the first fixing portion 24 (or the second fixing portion 26) and the sheathing member 22 by riveting, screwing, or clipping; in order to ensure that the mounting member 2 has sufficient structural strength, the mounting member 2 may be made of a metal material having high structural strength; the first support rod 4 comprises a first body 42 and a support rod 44, wherein the first body 42 is fixedly connected with the first fixing part 24, and the fixed connection relationship between the first body 42 and the first fixing part can be formed by welding or connecting parts; the support bar 44 and the first body 42 may be formed in an integral manner, and the support bar 44 may be formed to extend from an end of the first body 42 in a direction of an axis of the mounting hole 222, which may improve a connection strength between the support bar 44 and the first body 42; in order to facilitate the installation of the restraint 8, it is preferable that the end of the support rod 44 is extended with a holding portion 46, and accordingly, the integrally formed holding portion 46 and the support rod 44 can also improve the connection stability therebetween; similarly, the second support rod 6 can also be arranged in such a way that the second body 62 in the second support rod 6 is hollow, and the space inside the second body is communicated with the mounting hole 222 of the sheathing part 22, so as to realize the presetting and subsequent releasing work of the weft yarn 10, and the weft yarn 10 can pass through the yarn outlet 642 of the yarn outlet part 64. By arranging the second body 62 obliquely relative to the axis of the mounting hole 222, during the manual threading, the thread guiding rod can more easily pass through the shaft hole of the shell 1 and penetrate into the inner space of the second body 62, and correspondingly, in order to make the whole structure of the yarn guiding restraint fork more symmetrical, the first body 42 is also arranged obliquely relative to the axis of the mounting hole 222; the yarn outlet 64 can also be used for mounting other components that may be involved in the weft storage process, the yarn outlet 64 being fixed to the end of the second body 62; specifically, the first strut 4 and the second strut 6 can be made of the same non-magnetic conductive and high resistivity material, so as to prevent the yarn guide restraint fork from rotating in a strong magnetic area to generate eddy current, and thus, the weaving work is not influenced; in order to reduce the centrifugal force generated by the first and second struts 4 and 6 as much as possible, both may be made of light materials, and in order to balance and reduce the centrifugal force generated by both as much as possible, the first and second bodies 42 and 62 may also have the same structure, both may be configured as hollow structures, and the cross sections of both may be elliptical ring surfaces or circular ring surfaces, etc.; the first supporting rod 4 and the first fixing portion 24, and the second supporting rod 6 and the second fixing portion 26 can be fixedly connected in various ways, and accordingly, the supporting rod 44 is arranged on the first supporting rod 4, so that the yarn outlet portion 64 arranged on the second supporting rod 6 can further make the overall structure of the yarn guiding restraining fork more symmetrical, and further prevent the yarn guiding restraining fork from being damaged due to uneven stress of each part in the yarn guiding restraining fork caused by different centrifugal forces generated by the first supporting rod 4 and the second supporting rod 6 in the rotating process; in order to restrain the weft yarn 10 during the weft insertion process of the weaving operation, the yarn guide restraining fork is provided with a restraining piece 8, the restraining piece 8 is arranged on the holding part 46, the restraining piece 8 is provided with a yarn guide restraining ring hole 842 for guiding and restraining the weft yarn 10, the weft yarn 10 can be inserted into the yarn guide restraining ring hole 842 of the restraining piece 8 in advance during the weaving process, a certain amount of weft yarn 10 is stored on the yarn frame 9 of the yarn storage device under the action of the yarn guide restraining fork, when the weft insertion operation is started, the weft yarn 10 is freely released under the action of an insertion body (not shown in the figure), so that the weft yarn 10 stored on the yarn frame 9 in advance is taken away by a ring, when the weft yarn 10 wound on the yarn frame 9 reaches the yarn guide restraining ring hole 842, the yarn guide restraining fork is driven by a servo driving system (not shown in the figure) in the yarn storage device to rotate, therefore, the speed of the weft yarn 10 at a high speed is limited, so as to descend to the weft storing speed of the weft storing device within a certain time period; specifically, the retainers 8 and the holding portions 46 may be connected to each other by screwing, clipping, or the like, and the surface of the retainer 8 may be made as smooth as possible in order to minimize the frictional force between the retainer 8 and the weft yarn 10.

In the weaving method provided by the present application, the weft yarn 10 is made to pass through the yarn guiding restraining ring hole of the yarn guiding restraining fork in advance, during the weaving process, a certain amount of weft yarn 10 is pre-stored on the creel 9, then the weft yarn 10 pre-stored on the creel 9 is released freely to the preset position under the action of the weft insertion body, when the weft yarn 10 on the creel 9 is tensioned on the yarn guiding restraining ring hole, the yarn guiding restraining fork generates a certain restraining effect on the weft yarn 10 in the free release state, so as to gradually reduce the flying speed of the weft yarn 10, so that when the release of the weft yarn 10 is stopped, the tension peak value of the weft yarn 10 is relatively small, thereby preventing the occurrence of defects on the cloth surface or the occurrence of the phenomenon that the weft yarn 10 is torn off, and further ensuring the smooth weaving work.

In detail, during the weaving process, the weft accumulator operates as an auxiliary tool of the loom, the weft accumulator operates synchronously with the loom, the weft accumulator provides raw material for the weft 10 for the normal operation of the loom, for example, the quantity of the weft 10 required for one cycle of the loom, the yarn guide restraint fork in the weft accumulator needs to rotate for a plurality of circles for storage, during the operation of the loom, the yarn guide restraint fork continuously operates to store the weft 10 to the creel 9, and the specific number of circles of rotation of the yarn guide restraint fork is determined by the specification of the cloth to be woven.

In the whole process of storing weft yarn, releasing weft yarn and restraining weft yarn, a yarn guide restraining fork for storing the weft yarn 10 continuously rotates, the weft yarn 10 is wound on a creel 9, after the quantity of the weft yarn 10 prestored on the creel 9 reaches a certain value, the weft yarn 10 enters a free releasing process under the action of a weft insertion body, the speed of the weft yarn 10 is continuously increased, the releasing process of the weft yarn 10 is divided into a plurality of stages, in the first stage, the speed of the weft yarn 10 is continuously increased from zero, and the quantity of the weft yarn 10 on the creel 9 is still increased because the speed of releasing the weft yarn 10 at the moment is smaller than the speed of storing the weft yarn 10; and in the second stage, starting from the moment that the releasing speed of the weft yarn 10 is greater than the storing speed of the weft yarn 10, the amount of the weft yarn 10 wound from the creel 9 is greater than the amount of the weft yarn 10 rewound on the creel 9, in the process, the residual amount of the weft yarn 10 on the creel 9 is continuously reduced, the second stage is continuously carried out until the third stage, the yarn restraint fork is already tensioned by the previous weft yarn 10 towards the weft yarn 10 newly wound on the creel 9, the weft yarn 10 is tensioned on the yarn restraint fork, the releasing speed of the weft yarn 10 is gradually reduced in a certain time under the restraining action of the yarn restraint fork until a weft insertion work process is finished, at the moment, the amount of the weft yarn 10 wound on the creel 9 by the yarn restraint fork is just equal to the amount of the weft yarn 10 released under the action of the carrier, and the released weft yarn 10 synchronously enters a loom to finish weaving work.

In order to restrain the restraining means 8 and guide the weft yarn 10 more effectively, the holding portion 46 is preferably provided with a holding hole 462, the holding hole 462 can be transversely arranged, and the axis of the yarn guide restraining ring hole 842 is perpendicular to the axis of the holding hole 462. Specifically, the holding hole 462 may be formed by drilling, or the holding hole 462 may be directly formed on the holding portion 46 during the manufacturing process of the support rod 44, and the holding hole 462 may be a circular hole, a square hole or a hole with other shapes, accordingly, since the restraint member 8 is connected to the holding portion 46 through the holding hole 462, the shape of the structure of the restraint member 8 matching with the holding hole 462 may be adapted to the shape of the holding hole 462; the holding hole 462 is transversely arranged, that is, the shortest connection between the center of the holding hole 462 and the axis of the mounting hole 222 is coincident with the axis of the holding hole 462, and the axis of the holding hole 462 is arranged perpendicular to the axis of the mounting hole 222; by arranging the axial line of the yarn guiding restraining ring hole 842 to be vertical to the axial line of the holding hole 462, in the process of guiding or restraining the weft yarn 10 through the yarn guiding restraining ring hole 842 of the restraining piece 8, the matching angle between the weft yarn 10 wound down from the creel 9 is more gentle when the weft yarn 10 passes through the yarn guiding restraining ring hole 842 and flies away from the yarn guiding restraining fork; meanwhile, the restraining element 8 is arranged in such a way that the plane of the yarn guiding restraining ring hole 842 is always vertical to the tangent plane of the creel 9 in the weft storage process, which is beneficial to pre-storing the weft yarns 10 on the creel 9.

One preferred embodiment is that the restraining member 8 can be made of a smooth alumina ceramic material or a ceramic-like material, the restraining member 8 is made of the ceramic material, the smoothness of the surface of the restraining member can be improved, and the ceramic material has high wear resistance; the porcelain-like material can be a material formed by compounding various materials. In addition, the yarn outlet part 64 can also be made of the ceramic material, and the outer surface of the yarn outlet part 64 can also be set as smooth as possible, so as to prevent the friction between the weft yarn 10 and the yarn outlet part 64 from being too large to hinder the yarn outlet process; the yarn discharge hole 642 may be a circular or oval hole.

Further, the retainer 8 includes a retaining rod 82 and a yarn guide 84, the retaining rod 82 can be fitted and fixed to the yarn guide 84, the yarn guide 84 has a yarn guide retaining ring 842, and in order to further balance the retaining and guiding effects of the yarn guide retaining ring 842 on the weft 10, the yarn guide 84 may preferably have an elliptical cross-section. Specifically, the yarn guide 84 may be made of an alumina ceramic material, the holding rod 82 may be made of a metal or ceramic material, and the yarn guide 84 may be provided with an engagement hole 844 engaged with the holding rod 82, and the two may be connected by using a glass solder as an intermediate layer or fixedly connected by soldering, bonding, or the like; the section of the yarn guide body 84 is an ellipsoid, and it can be specifically understood that the section of the yarn guide body 84, which is obtained by passing through a plane of a straight line where the radius of the yarn guide body is located, includes one or two ellipsoids, and the outer peripheral surface of the yarn guide restraining ring hole 842 is of such a structure, so that the restraining effect of the yarn guide body 84 is ensured, and simultaneously, the blocking effect of the yarn guide body 84 on the weft yarn 10 in the process of guiding the weft yarn 10 can be relatively reduced, thereby improving the guiding effect of the yarn guide body 84 on the weft yarn 10, and reducing the abrasion on the weft yarn 10 and the yarn guide body 84 in the weft storing process.

Furthermore, the restraining element 8 comprises a retaining rod 82 and a yarn guiding body 84, during the weft insertion process, the angle formed between the flying weft yarn section and the weft yarn section located at the downstream of the yarn guiding restraining ring hole 842 directly determines the restraining force of the yarn guiding restraining fork on the flying weft yarn 10, and the weft insertion process is also influenced by factors such as the thickness of the weft yarn 10 and the initial flying speed of the weft yarn 10, preferably, the restraining element 8 and the holding part 46 can form an adjustable connection relationship, so that the distance between the yarn guiding body 84 and the holding part 46 can be adjusted, the angle between the two weft yarn sections can be adjusted, and the size of the restraining force of the yarn guiding restraining fork on the flying weft yarn 10 can be adjusted, so as to ensure the implementation of the weft insertion work; in addition, the distance between the yarn guide body 84 and the holding part 46 is adjustable, and the distance between the yarn guide body 84 and the creel 9 can be correspondingly adjusted according to the size (or diameter) change of the creel 9 in the weft storage process, so that the weft storage work can be performed more reliably and excellently. Specifically, the retaining hole 462 may be a threaded hole, and the outer circumferential surface of the retaining rod 82 may be provided with an external thread, so as to form a threaded connection relationship between the retaining rod 82 and the retaining portion 46, so that the distance between the restraining member 8 and the retaining portion 46 may be adjusted, and during the weaving operation, the distance between the yarn guide 84 and the retaining portion 46 may be correspondingly adjusted according to the thickness, material, initial flying speed and other factors of the weft yarn 10, so as to ensure that the weft yarn 10 with different thicknesses or initial speeds can be freely released to the preset position.

In order to prevent the mounting member 2 from being damaged due to an excessive difference between the forces acting on the mounting member 2 by the first body 42 and the second body 62, in particular, in the process of forming the first body 42 and the second body 62, the first body 42 and the second body 62 may be symmetrically disposed and may be symmetrical about a plane passing through the axis of the mounting hole 222, so that the centrifugal forces generated by the first body 42 and the second body 62 are almost uniform during the weaving process. Preferably, the included angle between the two can be set to be 95-105 degrees, so that the convenience of manual threading of workers is improved in the process of realizing the functions of the two, and the working efficiency of the weaving process is further improved; meanwhile, the angle between the first body 42 and the second body 62 is kept between 95 degrees and 105 degrees, and the internal installation space of the weft accumulator, particularly the space in a cavity generated by the shell 1 of the weft accumulator, can be occupied as little as possible. In a more preferred embodiment, the angle between the first body 42 and the second body 62 can be 100 °, i.e. 50 ° to the axis of the mounting hole 222, which is more convenient for manual threading and enables the whole yarn guiding restraint fork to be more snugly mounted in the cavity formed by the housing 1.

Since the supporting rod 44 is disposed obliquely relative to the first body 42, and in order to ensure that the restraining member 8 mounted on the supporting rod 44 can better perform the guiding and restraining effects on the weft yarn 10, the supporting rod 44 needs to have a certain length, obviously, the longer the length of the supporting rod 44, the greater the centrifugal force generated by the supporting rod 44, and in order to reduce the magnitude of the supporting force generated by the supporting rod 44 as much as possible, optionally, the ratio of the length of the supporting rod 44 to the length of the first body 42 may be 3:7 to 3:9, and more preferably, the ratio of the lengths of the supporting rod 44 to the first body 42 may be 3:8, which further facilitates the weft storage operation.

Further, the supporting rod 44 may be configured to be a circular column structure to reduce the resistance generated when the supporting rod rotates, considering that other components may need to be installed on the yarn outlet 64, and in order to prevent the yarn outlet 64 from being too long in total length after the other components are installed to affect the normal operation of the weft accumulator, preferably, the length of the yarn outlet 64 may be set to be smaller than the length of the supporting rod 44, and accordingly, in order to balance the centrifugal forces generated by the two components, the outer circumference of the yarn outlet 64 may be set to be larger than the outer circumference of the supporting rod 44, or the cross-sectional area of the yarn outlet 64 may be set to be larger than the cross-sectional area of the supporting rod 44, so as to ensure that the centrifugal forces generated by the two components during the rotation are substantially consistent, thereby improving the durability and reliability of the mounting member 2.

Preferably, the sheathing part 22, the first fixing part 24 and the second fixing part 26 are made of metal material and are integrally cast, which can greatly improve the overall structural strength of the mounting part 2, in order to prevent the mounting part 2 from blocking with other parts in the rotation process, the parts connected between the first fixing part 24 and the second fixing part 26 and the sheathing part 22 are provided with arc avoiding parts 224, and the surfaces of the arc avoiding parts 224 can be set as smooth as possible, so that the blocking of air to the arc avoiding parts 224 is minimized in the rotation process of the yarn guiding restraint fork, and the yarn guiding restraint fork can keep rotating at a high speed with less blocking; the first fixing portion 24 and the second fixing portion 26 may be provided with an insertion hole 242 and a locking hole 262, the first body 42 and the second body 62 may be respectively inserted into the insertion hole 242 of the first fixing portion 24 and the insertion hole 242 of the second fixing portion 26, and then the screw 28 passing through the locking hole 262 may be used to complete the work of fixedly connecting the first fixing portion 24 and the first support rod 4 and the work of fixedly connecting the second fixing portion 26 and the second support rod 6, such connection manner is simple and reliable, and the disassembly and assembly are convenient in the subsequent maintenance and repair process; preferably, the first body 42 and the second body 62 may be provided with a clamping section 422, so that the first body 42 and the second body 62 form a multi-section structure, the clamping section 422 is inserted into the insertion hole 242, so that the first body 42 and the first fixing portion 24 complete pre-positioning, and in the subsequent use process, the clamping section 422 and the first fixing portion 24 may also form a limiting relationship, so as to further improve the connection stability therebetween. In addition, during the operation of the yarn guide restraining fork, since the rotation speed of the yarn guide restraining fork is relatively high, in order to improve the structural strength, the intermediate region of the sheathing part 22 may be optionally set to be retracted in the axial direction of the mounting hole 222, and the connection area between the first fixing part 24 and the second fixing part 26 may be increased.

During the weaving process, the restraint 8 is positioned at the outer side of the creel 9 to complete the guiding work of the weft yarn 10, but a certain distance is required to be kept between the restraint 8 and the creel 9, and the distance cannot be too large or too small; preferably, the restraining element 8 can be disposed on a side of the first rod 4 close to the sheathing part 22, that is, the yarn guiding restraining ring 842 of the restraining element 8 can be disposed on an inner side of the first rod 4, so that in the case that the structure between the restraining element 8 and the creel 9 is relatively compact, a relatively large gap can be formed between the first rod 4 and the creel 9, so as to prevent interference between the first rod 4 and the weft yarn 10 on the creel 9 after a certain amount of weft yarn 10 is stored on the creel 9, which affects normal weaving operation, and since the distance between the restraining element 8 and the holding part 46 is adjustable, the aforementioned problem does not exist.

Based on the yarn guiding restraint fork provided by any of the above embodiments, as shown in fig. 4, the present application further provides a weft accumulator, in the weaving process, the weft accumulator can pre-store weft yarns 10, the weft accumulator comprises a housing 1, a servo drive system, a creel 9, a yarn dividing device 11 and the yarn guiding restraint fork provided by any of the above embodiments, the servo drive system and the yarn guiding restraint fork are both installed on the housing 1, the creel 9 is installed on a driving shaft in the servo drive system, and the yarn guiding restraint fork is arranged between the housing 1 and the creel 9. Specifically, the housing 1 may be a metal shell structure, and the size of the creel 9 may be flexibly set according to actual requirements.

Based on the weft feeder provided in the above embodiment, as shown in fig. 5, an embodiment of the present application further provides a weaving method, which is applied to the weft feeder provided in the above embodiment, and the weaving method at least includes steps S1 to S9, specifically:

step S1, providing the weft accumulator provided in the above embodiment, where the weft accumulator specifically includes a housing 1, a servo drive system installed on the housing 1, a creel 9, a yarn dividing device 11, and a yarn guide restraining fork; the shell 1 can be of a metal shell structure, the type and the specification of a servo driving system can be selected according to actual conditions, the creel 9 can be of a metal cylindrical or similar cylindrical structure, the yarn dividing device 11 can be installed inside the creel 9, a plurality of strip holes can be formed in the creel 9 to accommodate fins of the yarn dividing device 11, the yarn dividing device 11 is connected with the servo driving system, and the servo driving system can drive the yarn dividing device 11 to work so as to finish the arrangement work of weft yarns 10 wound on the creel 9; the yarn guiding restraining fork can be made of rigid materials such as metal and can be arranged on a driving shaft of the servo driving system, and under the action of the servo driving system, the yarn guiding restraining fork can complete the guiding work of the weft yarns 10, so that the weft yarns 10 are wound on the periphery of the creel 9 for multiple circles, and the pre-storage work of the weft yarns 10 is completed. The weaving method provided by the application only relates to a part of processing work in the weaving process, and the remaining processing process in the weaving process can be supplemented by the technical personnel in the field according to the knowledge mastered by the technical personnel, and is not repeated herein.

Step S3, the weft yarn 10 is introduced, specifically, when the weaving operation starts, the free end of the weft yarn 10 may be inserted into the rear shaft hole of the housing 1, then the weft yarn 10 passes through the hollow tube of the second body 62 of the yarn guiding restraint fork, and finally passes out of the yarn outlet 642 of the yarn outlet 64, in order to pre-store the weft yarn 10 on the creel 9 under the guidance of the yarn guiding restraint fork, the free end of the weft yarn 10 may also pass through the yarn guiding restraint ring hole 842 of the yarn guiding restraint fork, and pre-wind the weft yarn on the creel for several turns, specifically, 1 to 5 turns, after the process is completed, the aforementioned free end of the weft yarn 10 is placed on the shelf, for example, fixed at a certain position on the weft storage device, or fixed at a certain position on the weft insertion body, so that the weft yarn 10 on the creel 9 can be pre-stored for subsequent weaving operation.

And step S5, pre-storing the weft yarns 10, specifically, controlling the servo driving system to work, rotating the yarn guide restraint fork under the action of the servo driving system, and driving the weft yarns 10 to continuously rotate along the periphery of the creel 9 so as to wind a plurality of circles of weft yarns 10 on the outer side of the creel 9, wherein the weft yarns 10 pre-stored on the creel 9 are used for the next weft insertion process in the weaving working process. Or, in the process of prestoring the weft yarn 10, in order to facilitate the weft yarn 10 to perform the subsequent free release process, optionally, as shown in fig. 7, step S5 further includes a process of adjusting the weft yarn 10, where this process is performed in synchronization with the prestoring of the weft yarn 10, specifically, under the action of the servo drive system, the yarn dividing device 11 acts, the specific representation form of the action is creep, and its fin rotates from the rear of the creel 9 to the front of the creel 9 in a small circumferential direction, so as to drive the weft yarn 10 wound on the periphery of the creel 9 to move toward the end of the creel 9 away from the rear of the housing 1, so that the weft yarn 10 can be closely arranged outside the creel 9 at a certain rule or a certain gap from the end of the creel 9 away from the rear of the housing 1, which facilitates the subsequent weft insertion work. It should be noted that the rear portion of the creel 9 refers to an end of the creel 9 close to the housing 1, and an end far from the housing 1 is a front portion of the creel 9.

Step S7, releasing the weft yarn 10, specifically, under the action of an external weft insertion body (not shown), making the weft yarn 10 have a set initial speed, and driving the weft yarn 10 wound on the creel 9 to wind down from the creel 9, the weft yarn 10 freely moves to a preset position under the initial speed and the action of the weft insertion body, and the acting force exerted on the weft yarn 10 by the weft insertion body and the driving force exerted on the weft yarn by the weft insertion body in the subsequent process can be set according to the number of turns of the weft yarn 10 wound down from the creel 9, so that the weft yarn 10 can be freely released under the action of the driving force, and the winding of the weft yarn 10 on the creel 9 are driven to wind down to reach the respective preset positions.

Step S9, constraining the weft yarn 10, it is known that, during the movement of the weft yarn 10, because the weft yarn 10 is under the action of the weft insertion body, the speed is continuously increased and the weft yarn 10 wound on the creel 9 is driven to be released together, during the free release of the weft yarn 10, the speed of the weft yarn 10 is gradually increased and is equal to the speed of the stored weft at a certain moment, because the weft yarn 10 is continuous, the last weft yarn segment will interact with the yarn guiding constraining fork, so that the weft yarn 10 is tensioned at the yarn guiding constraining annular hole 842, the yarn guiding constraining fork applies a certain constraining force to the weft yarn 10 in the free release state to gradually reduce the free release speed of the weft yarn 10, because the yarn guiding fork is still in the rotation state under the action of the servo driving system and continuously releases the weft yarn 10, so that the weft yarn 10 can continuously move for a certain distance to ensure that the whole weft yarn 10 just reaches the preset position, and finishing one weft insertion working process.

If it is necessary to continue the weaving process, the steps S5-S9 may be repeated. Specifically, through the repeated circulation of the steps, the weft insertion working process is completed one time, so that the weaving work is continuously carried out, and a woven product is formed through other processing processes.

As can be seen from the above, in the weaving method provided in the present application, the weft yarn 10 is made to pass through the yarn guiding restraining ring 842 of the yarn guiding restraining fork in advance, during the weaving process, a certain amount of weft yarn 10 is pre-stored on the creel 9, then the weft yarn 10 pre-stored on the creel 9 is released freely to the preset position under the action of the weft insertion body, when the weft yarn 10 on the creel 9 is tensioned on the yarn guiding restraining ring 842, the yarn guiding restraining fork generates a certain restraining effect on the weft yarn 10 in the free release state, so as to gradually reduce the flying speed of the weft yarn 10, so that when the release of the weft yarn 10 is stopped, the tension peak value of the weft yarn 10 is relatively small, thereby preventing the occurrence of defects on the cloth surface or the occurrence of the phenomenon that the weft yarn is torn off, and further ensuring the smooth weaving work.

Further, as shown in fig. 6, step S1 includes: step S11, assembling the storage device, and step S13, inputting the length of the weft yarn 10 pre-stored in the storage device in one time. Wherein, the assembly process of the weft accumulator is not described in detail; generally, for the weft storage process in the weaving work, the amount of the weft 10 pre-stored on the creel 9 at a time, namely the length of the weft 10, can be controlled by controlling the rotating speed and the rotating period of a servo driving system, controlling the discharging length of raw materials of the weft 10 and the like; however, the above-mentioned methods are complicated in operation, and it is preferable that the present application provides a weaving method in which the timing of the start and end of each weft insertion operation is controlled by manually inputting the total length of the weft 10 required for a single time to the weft accumulator, which is relatively simple and highly accurate. Further, the preset length can be made slightly longer than the actually required length to prevent the length of the weft yarn drawn by a single weft insertion process from failing to meet the actual requirement. Other steps of the weaving method in this embodiment are not modified, and are the same as those in the previous embodiment, and are not described again here.

In order to prevent the weft yarn 10 from being pulled apart during the weft storage process, as shown in fig. 8, the step S5 may specifically be: s51, enabling the yarn guide restraint fork to rotate at a set speed at a constant speed so as to wind a plurality of circles of weft yarns 10 on the creel 9; meanwhile, the yarn dividing device 11 creeps to drive the weft yarns 10 wound on the creel 9 to be distributed at preset intervals from the end part of the creel 9 far away from the rear part of the shell 1, and the weft storage work is completed by enabling the yarn guide restraining fork to rotate at a constant speed at a set speed, so that the weft storage work can be effectively prevented from being pulled apart due to the tension change of the weft yarns 10 in the process of pre-storing the weft yarns 10 in the creel 9, and the weft yarns 10 can be wound on the creel 9 with a certain tension, so that the yarn dividing device 11 is favorable for finishing the weft yarns 10.

After completing one weft insertion operation, in order to further prevent the weft yarn 10 from moving continuously, as shown in fig. 9, while the yarn guide restraining fork exerts a restraining effect on the weft yarn 10, step S9 of the weaving method provided by the present application may further include step S10, which specifically includes: when the length of the released weft yarn 10 reaches a preset length, the yarn stopping needle (not shown in the figure) is controlled to fall down to prevent the weft yarn 10 from being released continuously. Specifically, the yarn stopper may be disposed above an end of the creel 9 away from the rear portion of the housing 1, and may be installed outside the creel 9, and when the weft yarn 10 is stretched in the yarn guiding restraining ring hole 842 of the yarn guiding restraining fork, the yarn stopper may be controlled to fall within a certain period of time after the aforementioned time, and accordingly, a hole for engaging with the yarn stopper may be disposed on the creel 9, and the shape of the hole may correspond to the shape of the yarn stopper, and when the yarn stopper falls, the yarn stopper may be inserted into the hole on the creel 9, so as to prevent the weft yarn 10 from being unwound continuously.

Further, considering that the weft accumulator corresponding to the present application is provided with a yarn stopper, as shown in fig. 10, step S7 includes: s71, controlling the lifting of the yarn stopping needle; s73, releasing the weft yarn 10. After the arrangement, the order and the reliability of the whole weft storage-weft insertion work can be effectively regulated, so that the errors generated in the weaving work process are reduced as much as possible, and the weaving work efficiency is improved.

Further, as shown in fig. 11, step S73 may specifically be: in step S731, the weft yarn 10 is released freely under the action of the gas or liquid with a set speed. Specifically, the weft insertion body can be an air jet type or liquid jet type weft insertion body which is arranged opposite to the weft accumulator, and the weft insertion body applies a certain acting force to the weft yarn 10 in an air jet or liquid jet mode, so that the weft yarn 10 is freely released at a set initial speed, and a driving effect is continuously generated on the weft yarn 10 in a free release state; meanwhile, the weft 10 in the free release state can drive the weft 10 wound on the creel 9 to wind down, and the free release motion is carried out together, so as to reach the preset position.

Further, as shown in fig. 12, step S9 includes: step S91, the weft yarn 10 in the free release state drives the weft yarn 10 wound on the creel 9 to move, and the weft yarn 10 positioned relatively at the back is tensioned in the yarn guide restraining ring hole; specifically, after the weft yarn 10 is released freely and passes through a certain distance, and the weft yarn 10 pre-stored on the creel 9 reaches a preset residual amount, at this time, the weft yarn 10 is tensioned in the yarn guiding restraining ring hole, and the yarn guiding restraining fork generates a restraining action so as to restrain the weft yarn 10. Step S93, the speed of the weft yarn 10 in the free release state is gradually decreased; after the weft 10 interacts with the yarn guiding restraint fork, the speed of the weft 10 is gradually reduced under the action of the yarn guiding restraint fork, and at the moment, the weft 10 can still move under the action of the residual kinetic energy and finally moves to a preset position to complete one weft insertion work; step S95, cutting off the weft yarn 10 between the weft insertion body and the creel 9; this facilitates the next weft insertion by cutting the weft yarn 10 between the weft insertion body and the creel 9 and continuing to position the free end of the weft yarn 10 wound on the creel 9 at the position where the free end of the previous weft yarn 10 is positioned.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a lead yarn and restrict fork, installs on weft accumulator, its characterized in that includes:

the mounting piece comprises a sleeving part, a first fixing part and a second fixing part, and the first fixing part and the second fixing part are fixedly connected to two sides of the sleeving part; the sleeving part is provided with a mounting hole, and the mounting piece is arranged to be inserted on a driving shaft of the weft accumulator through the mounting hole;

the first supporting rod comprises a first body and a supporting rod, the first body is connected with the first fixing part and is obliquely arranged relative to the axis of the mounting hole, the supporting rod extends from the first body along the axis direction of the mounting hole, and a fixing part extends from the end part of the supporting rod;

the second supporting rod comprises a second body and a yarn outlet part, the second body is connected with the second fixing part, the second body is obliquely arranged relative to the axis, and the yarn outlet part is connected with the second body;

a restraining member attached to the holding portion, the restraining member having a yarn guide restraining ring hole for guiding and restraining the weft yarn;

the yarn guide restraining ring hole is arranged on the yarn guide restraining part, and the axis of the yarn guide restraining ring hole is perpendicular to the axis of the yarn guide restraining ring hole.

2. A weft accumulator is characterized by comprising a shell, a servo drive system, a creel, a yarn dividing device and the yarn guide restraining fork of claim 1, wherein the servo drive system, the creel and the yarn dividing device are all arranged on the shell, and the yarn guide restraining fork is arranged between the shell and the creel.

3. A method of weaving, comprising:

s1, providing the weft accumulator of claim 2, wherein the weft accumulator comprises a shell, and a servo drive system, a creel and a yarn guide restraint fork which are arranged on the shell;

s3, introducing weft yarns, wherein the weft yarns penetrate through the rear shaft hole of the shell and penetrate out of the yarn outlet hole of the yarn outlet part through the inner space of the second body of the yarn guide restraint fork, and penetrate through the yarn guide restraint ring hole of the yarn guide restraint fork after being pre-wound on the yarn frame for 1-5 circles;

s5, pre-storing the weft yarns, wherein the yarn guide restraint fork rotates to drive the weft yarns to wind a plurality of circles on the creel;

s7, releasing the weft yarns, wherein the weft yarns wound on the creel are freely released under the action of the weft insertion body;

s9, restraining the weft yarns, wherein the weft yarns in the free release state drive the weft yarns wound on the creel to be gradually released and are tensioned in the yarn guide restraining ring holes, and the yarn guide restraining forks apply restraining force to the weft yarns so as to reduce the flying speed of the weft yarns;

the loop of steps S5-S9 is repeated.

4. The weaving method according to claim 3, characterized in that step S1 comprises:

s11, assembling the weft accumulator;

and S13, inputting the length of the weft yarn pre-stored on the weft accumulator in a single time.

5. The weaving method according to claim 3, characterized in that step S5 further comprises:

and adjusting the weft yarns, and enabling the yarn dividing device to creep to drive the weft yarns wound on the creels to be distributed at preset intervals from the end parts of the creels, far away from the rear part of the shell.

6. The weaving method according to claim 5, characterized in that step S5 is in particular:

s51, the yarn guide restraint fork rotates at a set speed at a constant speed so as to wind a plurality of circles of weft yarns on the creel; and the yarn dividing device creeps to drive the weft yarns wound on the creels to be distributed at preset intervals from the end parts of the creels far away from the rear part of the shell.

7. The weaving method according to claim 3, characterized in that step S9 is followed by further comprising:

and S10, controlling the yarn stopping needle to fall down after the released weft yarn reaches the preset length so as to prevent the weft yarn from being released continuously.

8. The weaving method according to claim 7, characterized in that the step S7 comprises:

s71, controlling the lifting of the yarn stopping needle;

s73, releasing the weft yarns.

9. The weaving method according to claim 8, characterized in that the step S73 is specifically:

s731, freely releasing the weft yarn under the action of gas or liquid with set speed.

10. The weaving method according to claim 3, characterized in that step S9 comprises:

s91, the weft yarn in the free release state drives the weft yarn wound on the creel to move and is tensioned on the yarn guide restraint fork;

s93, the speed of the weft yarn in the free release state is reduced;

s95, cutting off the weft yarn between the yarn guiding body and the creel.

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