JPH05125640A - Method for separating warp yarn and separator - Google Patents

Abstract

PURPOSE:To extend a separation space with leasing pipes and a hook and simultaneously separate warp yarns by hooking leasing strings on the warp yarns, applying a tension to yarn ends, arranging the yarn ends, forming a warp yarn arranged plane, inserting and passing the leasing strings through leasing pipes, approaching the leasing pipes to the warp yarns and providing the separation space between the warp yarns. CONSTITUTION:A pair of leasing strings are previously hooked on plural warp yarns wound around a beam and a prescribed tension is applied to yarn ends of the warp yarns to make the warp yarns parallel in the front and rear arranging direction and form a warp yarn arranging plane 10. The pair of leasing strings are inserted and passed through a pair of leasing pipes and simultaneously stretched in the front and rear under a prescribed tension to retreat the leasing pipes while mutually rocking the leasing pipes to the side of the opposite surface of the warp yarn arranging plane 10. A prescribed separation space is then formed between the front yarn of the plural warp yarns and the succeeding warp yarn row. A hook 51 is moved in nearly the normal direction of the warp yarn arranging plane 10 to admit a pawl part (51a) of the hook 51 into the separation space. The hook 51, together with the pair of leasing pipes, is subsequently advanced to extend the separation space. Thereby, the warp yarns are surely separated without any mistake in separation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warp separating method and a separating device for separating a plurality of warp yarns wound around a warp beam one by one in order from their aligned ends.

[0002]

2. Description of the Related Art Conventionally, as a method for separating one yarn or a predetermined number of yarns from a large number of yarns, a separation method using a twill cord is well known. For example, a warp operation for applying a warp beam (warp beam) to a loom. This separation method is used when pulling the warp thread through a heddle for yarn and a dropper for detecting thread breakage.

As a conventional warp separating device, for example, an extremely fine hook member is brought close to a plurality of preliminarily arranged warps,
It is known to hook a thread on this hook, but when using such an extremely fine hook, it is easy to damage this hook, so it does not meet the recent demand for high speed, and it is difficult to maintain. I cannot escape. As a warp separating device capable of separating one frontmost warp from a large number of warps at high speed, for example, one shown in FIG. 5 can be considered. In this device, a hook 3 is provided which makes a stroke back and forth integrally with both traverse pipes 1 and 2 in the vicinity of the swing center axis of the pair of traverse pipes 1, 2 and is retracted when the warp yarns are separated by the traverse pipes 1, 2. Hook the frontmost separated yarn with the hook 3,
By the forward movement of the hook 3, the separation space between the frontmost warp yarn and the succeeding warp yarn group is expanded to a space where the work of the next process can be performed. Further, the hook 3 is disposed off the warp alignment reference plane, and when the hook 3 retracts, the separated yarn rides on the inclined surface 3a formed at the tip of the hook 3 so that the hook 3 of the warp 3 Is getting better caught. In the figure, 5 and 6 are plural warp yarns Y.
It is a pair of twill cords hung on.

[0004]

However, in such a method and apparatus for separating warp yarns, the separated yarns separated from the succeeding warp yarn groups by the swinging and retreating of the traverse pipes 1 and 2 are separated from the hooks 3. Since the hook 3 is hooked by the backward stroke, it becomes difficult to separate the frontmost warp yarn and the succeeding warp yarn group to be separated by the fluff or the glue, and when the separation space between the two becomes small, or If the parallel space or position is varied and the separation space between the two becomes small, the separation space for the required stroke of the hook 3 cannot be secured, and the separation operation may fail. If the slanted surface 3a of the hook 3 is not slippery, the warp is not caught on the hook 3 easily and the separating operation is likely to fail.

The present invention has been made in view of such conventional problems, and it is possible to surely expand the separation space even if the space for separation by the traverse tube is small, and there is no mistake in separation of warp yarns. And to provide a separating device.

[0006]

In order to achieve the above object, the invention according to claim 1 provides a step of preliminarily applying a pair of twill cords to a plurality of warp yarns wound around a beam, and yarns of the plurality of warp yarns. A warp aligning step of applying a predetermined tension to the ends and forming a warp alignment plane by arranging the yarn ends in the front-rear alignment direction, inserting a pair of twill cords into a pair of twill tubes, and applying a predetermined tension. The twill cord installation process of stretching back and forth with and the pair of twill pipes are swung to the opposite sides of the warp alignment planes and retracted, and both twill pipes are brought close to a plurality of warp yarns to bring them to the front of the plurality of warp yarns. Separation step of forming a predetermined separation space between the yarn of the warp and the subsequent warp group, and moving the hook in the direction substantially normal to the warp alignment plane to cause the hook portion of the hook to enter the predetermined separation space. After that, the hook is advanced together with the pair of traverse tubes to separate the hooks. A separation space enlarging step of enlarging between and is characterized in that it comprises a.

According to a second aspect of the present invention, a predetermined tension is applied to the yarn end portions of the plurality of warp yarns wound around the beam, and the yarn end portions are aligned in the front-rear alignment direction to form a warp yarn alignment plane. A warp holding means to be formed, and a pair of twill cords that are orthogonal to the plurality of warps so as to pass through warp alignment planes between adjacent warps toward mutually opposite surfaces, and are spaced apart in parallel to each other and extend forward and backward. And a pair of traverse pipes that are separated from each other in parallel and in which a pair of traverse cords are inserted, and a pair of traverse pipes are alternately oscillated from one side of the warp alignment plane to the other side and moved forward and backward, Twill tube driving means for bringing the twill tube close to a plurality of warp yarns during the retreat to form a predetermined separation space between the foremost yarn and the succeeding warp yarn group of the plurality of warp yarns, and warp yarn alignment when the twill pipe is retracted. It has a claw part that moves in the normal direction of the plane, and the claw part And a hook for advancing together with a pair of traverse tubes to expand the separation space,
It is characterized by having.

[0008]

According to the first and second aspects of the present invention, after the twill cord is hung on the warp yarn groups arranged in parallel in the front-rear alignment direction, a pair of twill pipes through which the twill cord is inserted are provided on opposite sides of the warp yarn alignment plane. It swings and retreats to form a predetermined separation space between the frontmost yarn of the plurality of warp yarns and the succeeding warp yarn group. on the other hand,
The hook is moved in a direction substantially normal to the warp alignment plane, the claw portion of the hook enters the predetermined separation space, and the hook moves forward together with the pair of traverse pipes to expand the separation space. Therefore, even if the separation space by the traverse tube is small, the separation space can be surely expanded, and the separation error due to the fluctuation of warp fluff or paste or the position of the warp yarn can be surely prevented.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 4 are views showing an embodiment of a method for separating a warp and a separating device according to the present invention. First, the configuration will be described.

1 to 4, reference numeral 10 denotes a predetermined warp alignment plane, which is not shown in detail, but this warp alignment plane 10 is not shown.
Is formed by holding the yarn ends Y of a large number (plurality) of warps wound around the warp beam by the warp holding means. The warp holding means is, for example, a back frame (not shown) that extends in the front-rear direction of the device and moves, and applies a predetermined tension in the vertical direction to each yarn end portion Y of the plurality of warp yarns. The yarn ends Y are arranged side by side in the front-back alignment direction to form the warp alignment plane 10.

Reference numerals 11 and 12 denote a pair of twill cords stretched horizontally on the back frame, and the twill cords 11 and 12 form a warp yarn alignment plane 10 between a plurality of warp yarn end portions Y adjacent to each other in the front-rear direction. The plurality of warp yarn end portions Y are alternately orthogonal to each other so as to pass toward opposite surfaces, and extend in the front-rear direction of the device at a predetermined distance in parallel with each other. Further, the twill cords 11 and 12 are inserted through a pair of twill pipes 13 and 14, and the twill pipes 13 and 14 are separated from each other in parallel with each other and the intermediate portions are fitted into the twill pipe rotating member 15. The traverse pipe rotating member 15 is rotatably attached to a traverse center shaft 16 fixed to an arm portion 21 of the front-rear slide unit 20, and is driven by a traverse pipe driving means 30.

This Aya tube driving means 30 is a slide unit.
Pulley 31 rotatably attached to the front end of 20 and pulley 31
A timing belt 32 wound around the 31 and the traverse tube rotating member 15 so as to interlock with each other, a lever 33 attached to one end of the pulley 31 in the axial direction, and a rotation around the axis and an axial direction with respect to the lever 33. A swing lever 35 having one end to which a freely slidable shaft 34 is fixed and an intermediate portion swingably attached to the frame 100 via a pivot member 110, and the other end of the swing lever 35 are rotated. A link member 36 having one end freely connected to the frame 100 is rotatably supported by the frame 100 via a bearing 111 and the like (others are not shown), and rotatably connected to the other end of the link member 36. It is provided with a crankshaft 37 and a prime mover (not shown) for driving the crankshaft 37. Then, this traverse pipe driving means 30 is used as a pair of traverse pipes 1.
1 and 12 are alternately swung from one surface side of the warp alignment plane 10 to the other surface side or the opposite direction, and are moved forward and backward,
At the time of swinging and retreating, the traverses 11 and 12 are brought close to the plurality of warp ends Y to form a predetermined separation space S between the frontmost yarn Y _{s of} the plurality of warp yarns and the succeeding warp yarn group Y _G. Let

Further, as shown in FIGS. 1 and 4, the front-rear slide unit 20 includes a main body portion 24 mounted on the frame 100 via guide members 22 and 23 so as to be movable back and forth, and a traverse tube rotating member 15. The arm portion 21 is bolted to the main body portion 24 so as to pivotally support the main body portion 24. The main body portion 24 is driven by the cam 26 via the cam follower lever 25. Also,
The shaft 34 is longer than the slide stroke of the slide unit 20, so that the traverse pipe rotating member 15 can be driven in the entire stroke region. In addition,
Reference numeral 27 is a tension spring that biases the cam follower lever 25 toward the cam 26.

On the other hand, as shown in FIGS. 1 and 3, a hook member 51 is slidably attached to the arm portion 21 of the slide unit 20 through a guide member 52 in the normal direction of the warp alignment plane 10. There is. The hook member 51 is pivotally connected to an intermediate portion of a hook drive lever 53 whose tip portion is swingably connected to the arm portion 21. The swing of the hook drive lever 53 causes the hook member 51 to move in and out in the left-right direction in FIG. To do. Further, the hook drive lever 53 is drivingly connected to the cam 55 via the cam follower lever 54, and reciprocally rotates within a predetermined angle range when the cam 55 rotates. The cams 26, 55 are driven at predetermined timings by driving means (not shown) so as to move the hook member 51 in the normal direction of the warp alignment plane 10 when the traverse pipes 11, 12 are retracted. Then, when the hook member 51 having the claw portion 51 inserted into the separation space S advances together with the arm portion 21 and the pair of traverse pipes 11 and 12 (moves to the right in FIG. 2), this time the frontmost yarn Y _s is pulled forward and the separation space S expands.

Although not shown, in this embodiment, a gripping means for gripping the front end side of the warp yarn Y _s pulled forward by the hook 51 and a cutter for cutting the warp yarn Y _s under the grasping device are provided. The warp thread cut by the cutter after the above separating operation is supplied by the holding means to a predetermined threading means (for example, a threading nozzle that draws the warp thread to a heddle or a dropper using an air flow and a peripheral device). To be done. Further, in FIGS. 1 to 4, reference numeral 61 denotes a warp guide fixed to the traverse pipe rotating member 15 and extending in the direction in which the warp Y is juxtaposed. Although not shown, the hook 51 is pulled forward by the hook 51. Next, an embodiment of a method for separating warp yarns according to the present invention using the separating device having the above-described structure will be described together with its operation.

First, as a preparation step, a pair of twill strings 11 and 12 are preliminarily applied to a large number of warp yarn end portions Y (hereinafter, simply referred to as yarns Y) wound around the warp beam by a known method. Next, in the warp yarn aligning step, the warping beam in which the yarn Y is loosened is supported on the back frame, the tip of the yarn Y is held by a horizontal holding bar above the back frame, and the warp beam is arranged a predetermined distance below the warping beam. A separate holding bar is provided to hold the middle of the yarn end Y, and the distance between both holding bars is adjusted to apply a predetermined tension in the vertical direction to the yarn end Y. At this time, a large number of yarn ends Y are juxtaposed in the front-back alignment direction to form a warp alignment plane 10.

On the other hand, before and after the aligning step, the twill string attaching step is performed. In this process, the pair of twill cords 11 and 12 hung on the warp group Y _G is inserted into the pair of twill pipes 13 and 14, and the both twill cords 11 and 12 are moved in the front-rear direction (the vertical direction in FIG. 1) by a predetermined tension. (Direction). In this state, when the traverse pipe rotating member 15 is rotated to traverse the traverse pipes 13 and 14, the foremost yarn Y close to the pair of traverse pipes 11 and 12 is moved from the succeeding warp yarn group Y _G. Can be separated.

Next, in the separating step, the traverse tubes 13 and 14 are swung toward the opposite sides of the warp alignment plane 10 and retracted (approached to the succeeding warp group Y _G ). At this time, Ryokan 1
The twill cords 11 and 12 which pass through the yarns 3 and 14 release the frontmost yarn Y _s of the plurality of yarns Y and push the yarn Y immediately thereafter to the rearward direction, so that the yarn Y _s moves from the succeeding warp yarn group Y _G. Will be separated. Further, when the traverse pipes 13 and 14 approach the succeeding warp yarn group Y _G as the slid unit 20 slides, the separation space S between the foremost yarn Y _s and the succeeding warp yarn group Y _G is expanded to some extent. .. The expansion of the separation space by the movement of the traverse pipes 13 and 14 is to secure the insertion space of the hook 51 against the deviation from the reference position when a large number of yarns Y are aligned or the variation in the pitch between the yarns Y. belongs to.

Next, in the separation space expanding step, first, the hook 51 is moved in a direction substantially normal to the warp alignment plane 10 to cause the claw portion 51a of the hook 51 to enter the predetermined separation space S, and then the cam. By continuing the rotation of 26, the moving direction of the slide unit 20 is reversed, and the hook 51 is moved forward (moved to the upper side in FIG. 1) together with the pair of traverse tubes 13 and 14, thereby pulling the yarn Y _s forward and separating the yarn. The space S is greatly expanded.

Next, the holding means, the cutter or the like is inserted into the enlarged separation space S, the tip of the separated yarn is separated and cut, and the warp Y is supplied to the threading means to operate the heddle for operating the warp. And a dropper for detecting thread breakage. As described above, in this embodiment, after the twill cords 11 and 12 are hung on the plurality of warp yarns Y arranged in parallel in the front-rear alignment direction, the twill cords 1 are
A pair of twill pipes 13 and 14 through which 1 and 12 are inserted are swung to the opposite side of the warp alignment plane 10 and are retracted, so that the frontmost yarn Y _{s of} the plurality of warp yarns Y and the succeeding warp yarn group Y _G are formed. While a predetermined separation space is formed between the hooks, the hook 51 is moved in the substantially normal direction of the warp alignment plane 10 so that the hook portion of the hook 51 is formed.
51a is inserted into a predetermined separation space S, and a pair of traverse pipes 13,
The separation space is expanded by advancing the hook 51 together with 14. Therefore, even if the warp Y is a long fluff or a glue is applied, or the separation space due to the traverse motion of the traverse pipes 13 and 14 becomes small due to variations in the warp position, the hook 51 can be reliably attached to the yarn Y. It is possible to hook on _s , and the separation space S can be surely expanded. As a result, separation mistakes are reliably prevented.

[0021]

According to the first and second aspects of the present invention, a plurality of warp yarns arranged in parallel are hooked with a pair of twill cords, and a traverse operation of a pair of twill pipes that are inserted through the warp yarns causes traverse motions of the plurality of warp yarns. A predetermined separation space is formed between the front yarn and the subsequent warp yarn group, while the hook is moved in the substantially normal direction of the warp alignment plane to cause the hook portion of the hook to enter the predetermined separation space,
Since the separation space is expanded by advancing this hook together with the pair of traverses, when the separated yarns are difficult to separate from the succeeding warp groups by warp or sizing, or due to variations in warp position, Even when the effective separating space due to the traverse operation becomes small, the hook can be reliably hooked on the separating yarn, and the separating space can be surely expanded. As a result, it is possible to reliably prevent the separation error.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing an internal configuration of an embodiment of a warp separating device according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a supporting portion of a traverse tube according to an embodiment.

FIG. 3 is a side sectional view showing an internal configuration of an embodiment.

FIG. 4 is a partial front sectional view showing the internal structure of the embodiment.

FIG. 5 is an operation explanatory diagram of a conventional example.

[Reference Numerals] 10 warp aligning plane 11 Ayahimo 13,14 Aya tube 15 Aya tube rotating member 20 slide unit 21 arm portion 30 winding tube driving means 51 hook 51a claw portion S separation spaces Y yarn end Y _s Foremost thread

Claims (2)

[Claims] 1. A preparatory step of preliminarily applying a pair of twill cords to a plurality of warp yarns wound around a beam, applying a predetermined tension to the yarn end portions of the plurality of warp yarns, and aligning the yarn end portions in the front-rear alignment direction. Warp alignment step of forming parallel warp alignment planes in parallel with each other, inserting a pair of twill cords into a pair of twill pipes, and attaching a pair of twill cords back and forth with a predetermined tension, and a pair of twill pipes to each other. Separation by rocking and retreating to the opposite side of the alignment plane to bring both twill tubes close to a plurality of warp yarns to form a predetermined separation space between the frontmost yarn of the plurality of warp yarns and the succeeding warp yarn group. Step, and after moving the hook in a direction substantially normal to the warp alignment plane to allow the hook portion of the hook to enter the predetermined separation space, advance the hook together with a pair of traverse tubes to expand the separation space. And a separation space expanding step of How to separate warp threads. 2. A warp holding means for applying a predetermined tension to the yarn end portions of a plurality of warp yarns wound around a beam and arranging the yarn end portions in the front-rear alignment direction to form a warp yarn alignment plane. A pair of twill cords that extend orthogonally to the plurality of warp yarns and extend in the front-rear direction so as to pass through the warp yarn alignment planes toward the opposite surface sides between the warp yarns, and are spaced parallel to each other. A pair of traverse pipes in which a pair of traverse cords are inserted and a pair of traverse pipes are alternately oscillated from one surface side to the other surface side of the warp alignment plane, and are moved forward and backward, and at the time of the backward movement, a plurality of traverse tubes are formed. A traverse pipe driving means for approaching the warp yarn to form a predetermined separation space between the frontmost yarn and the succeeding warp yarn group of the plurality of warp yarns, and moving in the normal direction of the warp yarn alignment plane when the traverse yarn is retracted. A claw part, and the claw part is inserted into the predetermined separation space, A warp separating device comprising: a hook that advances together with a pair of traverse tubes to expand the separating space.