KR20110007942A - Thread winding machine and winding method of thread - Google Patents

Abstract

(Problem) The present invention provides a technique of eliminating the variation in tension between thread yarns under the premise of mounting a plurality of bobbins on one winding shaft, thereby bringing the tension of each thread thread within the specification tension tolerance.
(Solution means) The thread winding machine 1 comprises one bobbin holder 3 which can simultaneously mount the plurality of winding bobbins 2, and a plurality of threads Y wound around the plurality of winding bobbins 2, respectively. A plurality of traverse devices 5 for traversing, a plurality of tension measuring devices 6 for measuring the tension of a plurality of thread Y wound around the plurality of winding bobbins 2, and each thread Y The traverse speed changing unit 62 which increases or decreases the traverse speed VT of the traverse device 5 so that the tension of the thread Y measured by the tension measuring device 6 falls within a specification tension allowable range. Equipped.

Description

Yarn winding machine and winding method of yarn movement {YARN WINDING MACHINE AND YARN WINDING METHOD}

The present invention relates to a thread winding machine and a winding method of thread thread.

Background Art Conventionally, a thread winding machine that winds a plurality of threads at the same time by setting a plurality of bobbins on one winding shaft from the viewpoint of productivity when winding a thread that is continuously supplied is known. However, this winding period had the following drawbacks. That is, since the rotation speed of all bobbins is governed by the rotation speed of the one winding shaft, even if there is a variation in the tension of the thread between each thread, this deviation cannot be resolved, and as a result, the tension of the thread is the inherent problem. Packages outside the permissible range (the range of acceptable tension determined as specifications) have sometimes been formed. In general, it is considered that if a thread whose thread tension is outside the specification tension allowable range is sent to a downstream process, it causes various problems such as a defect in the downstream process, for example.

In particular, when a so-called high elastic yarn having a Young's modulus of 150 [cN / dtex] or higher is the object of winding, such as aramid fiber, glass fiber, carbon fiber, etc., it is a high modulus of elasticity. I) and mechanical errors in the parts related to winding, etc.] only cause a slight deviation of tension between the threads.

<Design A>

As one means of eliminating the variation in tension between the yarns described above, the following constitution (hereinafter referred to as design A) has been devised. That is, instead of setting a plurality of bobbins on one winding shaft, it is assumed that only a single bobbin is set on one winding shaft. Tension measuring means for measuring the tension of the running thread is provided. The rotation speed of the winding shaft is controlled so that the tension of the thread is within the specification tension allowable range based on the tension of the thread measured by the tension measuring means. However, the traverse speed is also increased and decreased so that the ridge angle does not change when the rotational speed of the winding shaft is increased or decreased. In short, the design A is to prepare the take-up shaft individually for each thread, so that the number of revolutions of the bobbin mounted on each take-up shaft can be controlled independently.

This design A will be supplemented by using a vector diagram. 1 is a vector diagram showing the correlation between the winding speed VW (meaning the circumferential speed of a package), the traverse speed VT, and the four speed V in a vector format. Fig. 1 (a) shows the basic way of thinking of the mutual relationship, and is represented by the following equation (1) and equation (2) between the winding speed VW, the traverse speed VT, the firing speed V, and the ridge angle WA. The relationship represented by is established. The above invention A corresponds to the vector diagram of Fig. 1 (c), that is, the ridge angle WA by increasing and decreasing the winding speed VW and the traverse speed VT at the same time as VW → VW 'and VT → VT'. While maintaining a constant, the yarn speed (V) is increased or decreased as V → V ', thereby trying to adjust the tension of the yarn.

<Patent Document 1>

Moreover, as a breakthrough means for solving the above-mentioned problem regarding tension deviation between yarns, Patent Literature 1 has a configuration in which a plurality of bobbins 14a and 14b are mounted on one differential shaft (corresponding to a winding shaft). By using the gears artfully, a technique is disclosed that allows a difference in rotational speed to occur between bobbins adjacent to each other. The directionality of this technique is similar to that of the above-mentioned design A, in which the winding shafts are individually prepared for each thread in that the direction is solved by the individual adjustment of the bobbin rotation speed.

The technique described in the said patent document 1 is a technique corresponding to the vector diagram of FIG. 1 (d). In other words, the winding speed VW is increased or decreased as VW → VW ', but the ridge angle WA is changed from WA → WA' while the yarn speed V is increased or decreased as V → V 'to adjust the tension of the thread. I'm trying to.

<Patent Document 2>

Moreover, patent document 2 is disclosing the technique which cancels the change of the winding tension (corresponding to the tension of thread thread), giving priority to the change of ridge angle. In other words, when changing the ridge angle during winding, simply changing the traverse speed to change the ridge angle causes the yarn speed to increase and decrease, resulting in a change in the winding tension. It is a technique to increase or decrease the circumferential speed of a touch roller so that it may respond.

The technique described in the said patent document 2 is a technique corresponding to the vector diagram of FIG. 1 (e). That is, even when the ridge angle WA is increased or decreased as WA → WA ', the winding speed VW and the traverse speed VT are simultaneously VW → VW' such that the tension of the thread is constant, that is, the firing speed V is constant. , VT → VT 'to increase or decrease the technology.

What is common to the above-mentioned invention A, the technique of patent document 1, and the technique of patent document 2 is that the proper management of thread tension and the increase / decrease of winding-up speed VW are thoughtfully strongly strongly connected.

Japanese Patent Publication No. 2008-37650 Japanese Patent Laid-Open No. 8-225245

However, the solution of the above invention A is disadvantageous from the standpoint of the installation space, since it is a structure that does not share the winding shaft between a plurality of thread threads, and is inferior in manufacturing cost in comparison with the conventional machine.

Moreover, as a solution of the said patent document 1, the structure becomes ridiculously complicated like FIG. 1 or 5 of this patent document 1.

On the other hand, about the said patent document 2, a strong sense of incongruity is felt by the point that the change of the winding tension is canceled by the increase and decrease of the circumferential speed of a touch roller. This is because the problem pointed out in all of the present specification is a variation in tension between yarns, whereas the solution in Patent Literature 2 can only perform all yarns uniformly. However, in the technical background of patent document 2, it can be said that the solution is surely enough. This is because the change in the winding tension occurring in the configuration of Patent Literature 2 is that the entire thread is generated at the same time. In this respect, since the directionality of the technical premise is completely reversed, the technique described in Patent Literature 2 cannot be referred to to resolve the variation in tension between the yarns in question in the present application.

The present invention has been made in view of the above problems, and the main object thereof is to solve the variation in tension between each thread on the premise of attaching a plurality of bobbins to one winding shaft, and thereby the tension of each thread. It is an object of the present invention to provide a technique for causing the pressure to fall within the specification tension tolerance.

The problem to be solved of the present invention is as described above, and the means for solving the present invention and the effects thereof will be described.

According to the 1st viewpoint of this invention, the thread winding machine comprised as follows is provided. That is, the thread winding machine includes one winding shaft capable of mounting a plurality of bobbins at the same time, a plurality of traverse devices for traversing a plurality of yarns wound around the plurality of bobbins, and a plurality of thread windings wound on the plurality of bobbins. And a plurality of tension measuring means for measuring the tension, respectively, and a traverse speed changing means for increasing and decreasing the traverse speed of the traverse device so that the tension of the thread measured by the tension measuring means for each thread falls within a specification tension allowable range. do. According to the above structure, the tension | variance in tension between each thread is eliminated on the premise that a plurality of bobbins are attached to one winding shaft, and the tension of each thread can be set within the specification tension tolerance range.

The above technique corresponds to the vector diagram of FIG. 1 (b). That is, the winding speed (VW) is the same value in every thread, so it cannot be increased or decreased for each thread, and remains constant, while the ridge angle WA is increased by increasing or decreasing the traverse speed (VT) as VT → VT '. To increase or decrease like this is to try to adjust the tension of yarn by increasing or decreasing the speed (V) as V → V.

At first glance, this technique can only be considered to achieve the same purpose by increasing or decreasing the traverse speed VT instead of the winding speed VW in the technique of Patent Document 1 shown in Fig. 1 (d). As noted above, it was fully noted that the proper management of thread tension and the increase / decrease of the winding speed (VW) are directly contrary to the common sense of technology at the time of filing this application. In addition, it should not be overlooked that the technique overcomes the special handicap that the individual increase and decrease of the winding speed VW in each thread is prohibited. More specifically, Patent Literature 1 can also be said, but the idea of increasing or decreasing only one of the winding speed (VW) and the traverse speed (VT) to increase or decrease the firing speed (V) is to be avoided. It is easy to imagine that it was always avoided in that it could not.

In addition, although it is ideal to remove the deviation and to make all the thread tensions completely uniform by "resolving" the deviation of the thread tension, the purpose is to bring the tension of each thread within the specification tension tolerance. For this reason, it is not necessary to make all thread tensions uniform.

The thread winding machine is further configured as follows. That is, the thread winding machine further includes traverse width changing means for increasing or decreasing the traverse width of the traverse device so as to offset the change in the number of winds generated by the traverse speed changing means by the traverse speed changing means for each thread. do. That is, as shown in Fig. 1 (b), when the traverse speed VT is increased or decreased as VT → VT 'while the winding speed VW is constant, the ridge angle WA changes as WA → WA' and winds up. Unintended changes in numbers are inevitable. On the other hand, according to the said structure, even if the tension | variance difference between each thread is eliminated by the technique mentioned above, the number of winds can be matched with the desired number of winds. In other words, the technical significance is recognized that the number of windings changes as the number of winds proceeds, thereby avoiding problems such as ribbon generation.

The above description will be supplemented based on FIG. FIG. 2 is a partially developed view of a package circumferential surface showing the relationship between the distance L in the circumferential direction, the ridge angle WA, and the traverse width W that advance each time the traverse guide is made one round trip. As shown to Fig.2 (a), the relationship shown by following formula (3) between the distance L of the circumferential direction, the ridge angle WA, and the traverse width W which progresses every time the traverse guide makes one round trip. Is true. Subsequently, as shown in Fig. 1 (b), when the traverse speed VT is increased or decreased as VT → VT ', the ridge angle WA increases and decreases as WA → WA', and according to the increase and decrease of this ridge angle WA, As shown in FIG.2 (b), the said distance L increases and decreases like L → L '(refer Formula (4) below). This change in distance L is directly related to the change in the number of winds. Therefore, in the form of adding to the increase or decrease of the traverse speed VT shown in FIG. 1 (b), as shown in FIG. 2 (c), the traverse width W is increased or decreased as W → W '. Then, since the distance L 'increases and decreases at the same time as L' → L '' (see Equation (5) below), the number of winds is changed to the desired number of winds by increasing or decreasing the traverse width W so that L '' = L. The theory is that you can fit in.

The thread winding machine is further configured as follows. In other words, the yarn winding machine is a high elastic yarn of 150 [cN / dtex] of aramid fiber, glass fiber, carbon fiber or the like to be subjected to winding. As described above, when the object to be wound is high elastic yarn, the winding condition significantly affects the tension of thread yarns. Therefore, when the high elastic yarn is the object of the winding, the significance of the technique for solving the variation in tension between the yarns described above becomes clearer.

According to the 2nd viewpoint of this invention, the step precision winding which winds, keeping a ridge angle within a predetermined range until it approaches the number of risk winds which a ribbon with a strong overlap generate | occur | produces is performed by the following method. In other words, by changing the traverse speed and by changing the traverse width, the winding tension of the thread and the number of package winds were maintained in the desired range. As illustrated in FIG. 6 (b), the step precision winding described above detects a tension variation when winding number = W1 and changes the traverse speed and the traverse width to feedback control the tension. In addition, the number of winds can be maintained at W1. Similarly, when the number of windings is wound at W2, the number of windings can be kept at W2 by controlling similarly.

1 is a vector diagram showing the correlation between the winding speed VW, the traverse speed VT, and the firing speed V in a vector format.
FIG. 2 is a partially developed view of a package circumferential surface showing the relationship between the distance L in the circumferential direction, the ridge angle WA, and the traverse width W that advance each time the traverse guide is made one round trip.
It is a perspective view of the thread winding machine by 1st Embodiment of this invention.
4 is a front view of the traverse apparatus.
5 is a functional block diagram of the controller of the thread winding machine.
6 is a diagram illustrating a winding pattern.
7 is a flow of the control unit of the thread winding machine.
It is a perspective view of the thread winding machine by 2nd Embodiment of this invention.
It is a perspective view of the thread winding machine by 3rd embodiment of this invention.

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of this invention is described, referring FIGS. 3-7. As shown in FIG. 3, the thread winding machine 1 which concerns on this embodiment of the plurality (four in this embodiment) for winding each thread Y supplied in plurality (4 in this embodiment) is provided. The bobbin holder 3 (winding shaft) in which the winding bobbin 2 (bobbin) is filled and arranged from one direction on the coaxial and the thread guide 4 (traverse guide) which can catch each said thread Y And the traverse device 5 (4 in this embodiment) which traverses each thread Y with respect to each winding bobbin 2 by reciprocating this thread guide 4 as a main structure. Hereinafter, this thread winding machine 1 is demonstrated in detail.

In the present embodiment, the yarn winding machine 1 is a yarn (Y) having a high modulus of elasticity of 150 [cN / dtex] or more, such as aramid fiber, glass fiber, carbon fiber, and the like. Is applied to a radiator 7 having a radiating portion which simultaneously emits (). That is, the spinning machine 7 is comprised with the said spinning part and the thread winding machine 1 which winds up the some thread Y discharged | emitted from this spinning part simultaneously. And each thread Y discharged | emitted from the radiating part is sent to the traverse apparatus 5 via the tension measuring apparatus 6 for measuring the tension of the thread | yarn thread Y running, and the traverse point guide 8, As it traverses in this traverse apparatus 5, it winds up on the winding bobbin 2, and, as a result, many packages are produced.

Specifically, the thread winding machine 1 includes an apparatus main body 9 having a control unit 60 shown in FIG. 5, a turret plate 10 rotatably supported on a side surface of the apparatus main body 9, The bobbin holder 3 protruding from the turret plate 10 in the horizontal direction, the beam body 12 supporting the plurality of traverse devices 5 and the contact rollers 11 (touch rollers), The keyboard 13 (input means) provided in the front of the apparatus main body 9 is provided. The bobbin holder 3 is provided in pairs, and continuous winding of the thread Y is possible.

The bobbin holder 3 mounts and supports the said winding bobbin 2 coaxially. And the bobbin holder 3 is comprised by the bobbin holder motor 14 (refer FIG. 5 together) attached to each bobbin holder 3 so that rotation with a plurality of winding bobbins 2 by predetermined rotation speed is possible. do. In addition, since the winding diameters of the packages formed in each winding bobbin 2 all increase with keeping pace, the circumferential speed of a package, ie, the winding speed VW, becomes the same value in all threads Y.

The said traverse apparatus 5 is comprised by what is called a belt type in this embodiment. As shown in FIG. 4, in the belt type traverse apparatus 5, the endless belt 15 to which the said seal guide 4 is attached, and a part of this endless belt 15 are carried out to the longitudinal direction of the bobbin holder 3, and the like. A pair of support units 16 for supporting the endless belt 15 so as to be substantially parallel to each other, and a drive motor 17 (belt drive source) for driving the endless belt 15 are provided. The belt traverse device 5 is such that the drive motor 17 reciprocates the endless belt 15 so that the seal guide 4 can reciprocate substantially parallel to the longitudinal direction of the bobbin holder 3. It is. Moreover, the said support unit 16 and the drive motor 17 are attached to the plate-shaped base 18, and this base 18 is being fixed to the beam body 12 in arbitrary attitude | positions. Moreover, the rail 19 which guides the seal guide 4 linearly is extended and provided between the pair of support units 16 so that the seal guide 4 may not shake when the endless belt 15 is reciprocated. . As the endless belt 15, in this embodiment, a timing belt is employ | adopted, and the endless belt 15 is wound around the pair of support unit 16 and the drive motor 17, and is traveling in the shape of an isosceles triangle shape. The support unit 16 has a pulley 20 to which the endless belt 15 is wound. The drive motor 17 becomes a pulse motor in this embodiment, and is connected to the control part 60. As shown in FIG. By this configuration, the controller 60 can freely increase and decrease the traverse speed VT (see FIG. 1) and the traverse width W (see FIG. 2), which are the traveling speeds of the seal guide 4, independently. It is. Here, "independently" means that the traverse speed VT can be made different and the traverse width W can be made different between the traverse apparatus 5 which adjoins mutually.

The tension measuring device 6 transmits the measured tension of the thread Y to the control unit 60 as a tension signal.

The contact roller 11 is provided between the plurality of belt type traverse devices 5 and the bobbin holder 3, and makes contact with the packages formed on the respective winding bobbins 2, and each belt type traverse device. Each thread Y traversed by (5) is wound. In addition, the circumferential speed of the contact roller 11 and the circumferential speed of the package have a matching relationship.

Next, the structure of the control part 60 is demonstrated, referring FIG. The control unit 60 temporarily stores the CPU (Central Processing Unit), which is an arithmetic processing unit, a ROM (Read Only Memory) in which control programs executed by the CPU and data used for the control program are stored, and data at the time of program execution. RAM (Random Access Memory) is provided. Then, the control program stored in the ROM is read into the CPU and executed on the CPU, so that the control program loads hardware such as the CPU into the tension acquisition unit 61 (tension acquisition means), the tension determination unit 69 (tension determination means), Traverse speed changing unit 62 (traverse speed changing unit), traverse width changing unit 63 (traverse width changing unit), traverse control unit 64 (traverse control unit), winding shaft control unit 65, ridge angle power changing unit (66), the counter 67 and the storage unit 68 function. Moreover, each said traverse apparatus 5, each tension measuring apparatus 6, the keyboard 13, and the bobbin holder motor 14 are connected to the said control part 60. As shown in FIG.

<Memory department 68>

The storage unit 68 includes tension management data 70, specification tension allowable range data 71, winding speed data 72, winding patterns (a) 73, and winding patterns (b) 74. ) Is remembered.

The tension management data 70 has the set value of the traverse speed VT, the set value of the traverse width W, and the measured value of the present thread Y tension for each thread in the form of a table. The data described in FIG. 5 is an example for explanation. "No. 1" of FIG. 5 corresponds to the leftmost thread Y in FIG. 3, and "No. 4" corresponds to the rightmost thread Y of FIG.

The specification tension allowable range data 71 has a tension upper limit value Tup as the upper limit value of the specification tension allowable range and a tension lower limit value Tdown as the lower limit value of the specification tension allowance range. The data described in FIG. 5 is an example for explanation.

The winding speed data 72 has a set value of the winding speed VW.

The winding patterns (a) 73 have a correspondence relationship between the winding diameter D and the ridge angle WA as shown in FIG. 6 (a) in a table form, for example. Moreover, the correspondence relationship shown to Fig.6 (a) is that the number of winds is made constant all the time from the start of winding to the end of winding.

The winding patterns (b) 74 have a correspondence relationship between the winding diameter D and the ridge angle WA as shown in FIG. 6 (b), for example, in a table form. Moreover, the correspondence relationship shown to FIG. 6 (b) is characterized by changing the number of winds in a step shape from the start of the winding to the end of the winding to prevent the occurrence of ribbon winding, thereby maintaining the ridge angle WA within a predetermined range. .

<Tension acquisition part 61>

The tension acquisition unit 61 acquires the tension of each thread Y based on the tension signal received from each tension measurement device 6, and updates the corresponding portion of the tension management data 70 based on the acquired tension. .

Tension Determination Unit 69

The tension determining unit 69 determines whether or not the tension of the thread Y is within the specification tension allowable range for each thread Y.

<Traverse speed changing section 62>

The traverse speed changing unit 62 has a traverse speed VT of the traverse device 5 such that the tension of the thread Y measured by the tension measuring device 6 falls within a specification allowable tension range for each thread Y. Increase). For example, speaking of thread No. Y of No. 1, the tension of thread No. Y of No. 1 exceeds the upper limit of tension Tup, that is, No. 1 is out of the allowable tension allowance range. The traverse speed VT of the traverse device 5 of No. 1 is reduced so that the tension of the thread Y of the yarn Y falls below the upper limit of the tension Tup. On the other hand, speaking of thread No. Y of No. 4, the thread of thread No. 4 of No. 4 is below the lower limit of tension Tdown, that is, the thread of No. 4 is out of the lower side of the allowable tension range. The traverse speed VT of the traverse apparatus 5 is increased so that the tension of (Y) exceeds the tension lower limit value Tdown. For example, PID control is preferable for the increase and decrease of the traverse speed VT.

<Traverse width changing section 63>

The traverse width changing section 63 traverses the traverse so as to offset the change in the number of winds generated by the traverse speed VT of the traverse device 5 by the traverse speed changing section 62 for each thread Y. The traverse width W of the apparatus 5 is increased or decreased. For example, when talking about thread Y of No. 1, since the traverse speed changing part 62 is supposed to reduce the traverse speed VT of the traverse apparatus 5 of No. 1, the said formula is mentioned. According to (2), when the ridge angle WA decreases and the ridge angle WA decreases, as shown in FIG. 2 (b), the distance L in the circumferential direction that advances each time the thread guide 4 reciprocates is Increases the number of winds. Therefore, the traverse width changing part 63 reduces the traverse width W of the traverse apparatus 5 of No. 1 so as to offset the increase of this number of winds. On the other hand, when talking about the thread Y of No. 4, since the traverse speed changing part 62 decided to increase the traverse speed VT of the traverse apparatus 5 of No. 4 as mentioned above, said formula (2) ), When the ridge angle WA increases, and when the ridge angle WA increases, the distance L in the circumferential direction that progresses every time the thread guide 4 reciprocates as shown in FIG. The number of winds decreases. Therefore, the traverse width changing part 63 increases the traverse width W of the traverse apparatus 5 of No. 4 so as to cancel the decrease of this number of winds.

<Traverse control unit 64>

The traverse control unit 64 controls the drive motor 17 of each traverse device 5 based on the set values of the traverse speed VT and the traverse width W for each thread Y of the tension management data 70. To control the operation.

<Winding shaft control part 65>

The winding shaft control part 65 controls the operation of the bobbin holder motor 14 based on the set value of the winding speed VW of the winding speed data 72. Specifically, the winding speed VW means the package circumferential speed, and the winding diameter D of the package can be expressed as a function of the elapsed time t from the start of the winding counted by the counter 67. Therefore, the winding-shaft control part 65 is specifically, based on the setting value of the winding-up speed VW which the winding-up speed data 72 has, and the elapsed time t counted by the counter 67, the bobbin holder motor ( 14) to control the operation.

<Ridge angle change part 66>

The ridge angle uniformity changer 66 is based on the correspondence relationship between the winding diameter D and the ridge angle WA of the winding patterns (a) 73 (or the winding patterns (b) 74). ) Increases or decreases the winding speed (VW) so that the traverse speed (VT) increases or decreases uniformly throughout the entire thread (Y). In addition, as shown in Fig. 1 (e), the technique of simultaneously increasing and decreasing the winding speed VW and the traverse speed VT in order to change the ridge angle WA while keeping the firing speed V constant is a known technique. In this specification, the detailed description is devoted.

<Counter 67>

The counter 67 counts the elapsed time t from the start of the winding of the package.

The initial values of the tension management data 70, the set values of the specification tension allowable range data 71, the winding speed data 72, the winding patterns (a) 73, and the winding patterns (b) 74 are The operator may input in advance to the control part 60 using the keyboard 13.

Next, operation | movement of the thread winding machine 1 is demonstrated, referring FIG.

The operator first turns on the power of the thread winding machine 1 (S300). Subsequently, by the input by the operator, the controller 60 acquires the initial values of the traverse speed VT, the traverse width W, and the winding speed VW of the tension management data 70, and the tension management data 70. ) And the winding speed data 72 (S310). Next, the control part 60 similarly acquires tension upper limit value Tup and tension lower limit value Tdown, and makes it store in specification tension tolerance range data 71 (S320).

Subsequently, the controller 60 starts winding of the yarns Y all at once (S330). That is, the traverse control unit 64 is the drive motor 17 of the traverse device 5 based on each set value of the traverse speed VT and the traverse width W of the tension management data 70 for each thread Y. Control the operation of Moreover, the winding-shaft control part 65 controls the operation of the bobbin holder motor 14 based on the setting value of the winding speed VW which the winding speed data 72 has.

Next, the control part 60 resets the counter 67, and starts the count of the elapsed time t to the counter 67 (S340).

Next, the tension acquiring unit 61 receives a tension signal from each tension measuring device 6, acquires a tension of each thread Y based on the received tension signal, and based on the acquired tension, tension management data ( The measured value of the tension of 70) is updated for each thread Y. In addition, immediately after the start of operation, the controller 60 adjusts the winding speed VW once so that the tension of thread No. Y of representative No. 1 as the representative tension falls within the specification tension allowable range.

Next, the tension determining unit 69 determines whether or not the tension of the thread Y is within the specification tension allowable range for each thread Y (S360 to S400) (S370). When the tension determining unit 69 determines that the tension of the thread Y is outside the specification tension allowable range (S370: YES), the traverse speed changing unit 62 allows the tension of the thread Y to be specified. The traverse speed VT of the traverse device 5 of the thread Y is increased or decreased to fall within the range (S380). In addition, the traverse width changing unit 63 increases or decreases the traverse width W of the traverse device 5 of the thread Y to offset the change in the number of winds generated by the increase or decrease of the traverse speed VT ( S390). On the other hand, when the tension determination unit 69 determines that the tension of the thread Y is within the specification tension allowable range (S370: NO), the processing moves to S400.

Subsequently, the ridge angle uniformity changer 66 is a ridge angle based on the correspondence relationship between the winding diameter D and the ridge angle WA of the winding patterns (a) 73 (or the winding patterns (b) 74 may be present). Increase and decrease the winding speed (VW) so that the (WA) increases and decreases the traverse speed (VT) uniformly. Further, since the traverse speed VT is uniformly increased and decreased uniformly throughout the thread thread Y, the deviation or the height of the traverse speed VT appropriately set by the traverse speed changing unit 62 is maintained.

Then, the control unit 60 repeatedly executes the processing of S350 to S410 until the package reaches the full winding in the entire thread Y (S420: NO) and when the package reaches the full winding in the whole thread Y ( S420: YES) The bobbin change is executed (S430) and the winding of the yarn Y by the new winding bobbin 2 is started (S340 to S420).

(theorem)

(Claim 1)

As explained above, in the said embodiment, the thread winding machine 1 is comprised as follows. That is, the thread winding machine 1 traverses each bobbin holder 3 which can simultaneously mount the plurality of winding bobbins 2, and the plurality of thread Y wound around the plurality of winding bobbins 2, respectively. For each of the plurality of traverse devices 5, a plurality of tension measuring devices 6 for measuring the tensions of the plurality of yarns Y wound around the plurality of winding bobbins 2, respectively. It is provided with the traverse speed change part 62 which increases / decreases the traverse speed VT of the said traverse apparatus 5 so that the tension of the thread Y measured by the said tension measuring apparatus 6 may fall in specification tension tolerance range. . According to the above structure, the tension | variance in tension between each thread Y is eliminated on the premise of attaching the some winding bobbin 2 to one bobbin holder 3, and each thread Y is therefore eliminated. The tension can be set within the specification tension tolerance.

In addition, it is noted that the above technique is particularly effective against the inherent (due to mechanical design tolerances) tension between yarns (Y) and the deviation of tension that deteriorates in the long term.

(Claim 2)

In addition, the thread winding machine 1 is configured as follows. That is, the thread winding machine 1 cancels the change in the number of winds generated by the traverse speed VT of the traverse device 5 by the traverse speed changing unit 62 for each thread Y. The traverse width changing part 63 which further increases or decreases the traverse width W of the said traverse apparatus 5 is further provided. According to the above structure, even if the tension | deviation in tension between each thread Y is eliminated by the technique mentioned above, the number of winds can be matched to the desired number of winds.

(Claims 3 and 4)

In addition, when the object to be wound is high elastic yarn, the winding condition significantly affects the tension of the yarn Y. Therefore, when a high modulus of elasticity of 150 [cN / dtex] of aramid fiber, glass fiber, carbon fiber or the like is the object of winding, the significance of the technique of resolving the variation in tension between the yarns Y described above Becomes more clear.

(Claim 5)

In addition, in the above-mentioned embodiment, the step precision winding which winds up keeping the ridge angle within the predetermined range until the number of dangerous winds which generate | occur | produce the ribbon with strong overlap as shown in FIG. 6 (b) was performed by the following method. All. In other words, by changing the traverse speed (VT) and by changing the traverse width (W), the winding tension of the thread (Y) and the number of package windings were maintained in a desired range. Here, "to keep the number of package winds in the desired range" means "to sufficiently compensate for unwanted changes in the number of package winds". As illustrated in Fig. 6 (b), the step precision winding detects tension variation when winding number = W1, changes the traverse speed and the traverse width, and feeds back the tension. The number of winds can also be maintained at W1. Similarly, when the number of windings is wound at W2, the number of windings can be kept at W2 by controlling similarly.

As mentioned above, although preferred embodiment of this invention was described, the said embodiment can be changed and implemented as follows.

(First modification)

In order to employ | adopt all the said techniques, the structure which can independently increase and decrease the traverse speed VT and the traverse width W of the traverse apparatus 5 becomes essential. From this point of view, for example, the seal guide 4 as shown in FIG. 8 includes a linear motor-type traverse device reciprocating by a linear motor, and a seal guide 4 as shown in FIG. 9 at its tip. A swinging traverse device for swinging the arm can also be employed. In other words, there is ample room for employing a special cam-type traverse device configured such that the traverse width W can be changed.

(Second modification)

Although the object of winding in the said embodiment was made into high elastic sand, it is not limited to this, For example, the low elastic sand of 150 [cN / dtex] or less may be sufficient. This is because there is a merit that the variation in tension between each thread Y is eliminated even in this case.

(Third modification)

In addition, in the said embodiment, immediately after the start of operation, the control part 60 adjusts the winding-up speed VW once based on the tension of the thread Y of No. 1 as a typical tension, but instead all the thread Y The winding speed VW may be adjusted once based on the tension average value of.

Claims (5)

One winding shaft capable of mounting a plurality of bobbins simultaneously;
A plurality of traverse apparatuses for traversing a plurality of yarns respectively wound around the plurality of bobbins;
A plurality of tension measuring means for measuring a plurality of thread tensions respectively wound around the plurality of bobbins; And
And a traverse speed changing means for increasing or decreasing the traverse speed of the traverse device so that the tension of the thread measured by the tension measuring means is within each specification for each thread. The method of claim 1,
Traverse width changing means for increasing or decreasing the traverse width of the traverse device so as to cancel a change in the number of winds generated by the traverse speed changing means by the traverse speed changing means for each thread. Yarn winding machine. The method according to claim 1 or 2,
A yarn winding machine characterized by winding a high elastic yarn having a Young's modulus of 150 [cN / dtex] or more. The method of claim 3, wherein
The high elastic yarn yarn yarn winding machine, characterized in that any one of aramid fiber, glass fiber, carbon fiber. In the step precision winding method of winding while maintaining the ridge angle within a predetermined range until the number of dangerous winds in which the ribbon with strong overlap is approached:
A winding method of a thread, wherein the winding tension and the number of package windings of the thread are maintained in a desired range by changing the traverse speed and the width of the traverse.

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