JP2007290839A - Control device for winding ended yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device for winding ended yarn capable of preventing kinky yarn during piecing and also preventing yarn jump of ends of winding ended yarn of yarn feeding bobbins at the time of winding up from the plurality of yarn feeding bobbins around one winding package with large diameter. <P>SOLUTION: This control device for winding ended yarn is movable among a waiting position 1A separated from a head part of the yarn feeding bobbin, a yarn jump preventing position 1B approaching to the head part of the bobbin and a kinky yarn preventing position 1C abutting on the head part of the bobbin, and is provided with a kinky yarn preventing member (brush 3) moved to the yarn jump preventing position 1B at the time of ending of winding up of each bobbin. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a winding end yarn control device for preventing bobbin winding end yarns from bouncing when winding a plurality of yarn supplying bobbins onto a single winding package having a large diameter.

  Conventionally, in an automatic winder in which a winding unit U (see FIG. 3) for winding a plurality of yarn feeding bobbins on a large-diameter winding package is arranged in parallel, generally a spun yarn made of short fibers such as cotton is used. A yarn Y is unwound from the yarn feeding bobbin B, and a predetermined yarn tension is applied by the tension device 10 and wound around the winding bobbin Bf while traversing to wind a winding package P having a large diameter and a predetermined shape. ing.

  Each winding unit U is provided with a side frame 18, and devices such as a cradle 17 and a traverse drum 16 for holding the winding bobbin Bf, an upper thread catching guide means 15 and a relay pipe 12 which will be described later are provided on this side. It is attached to the frame 18. Further, the side frame 18 is provided with driving means such as a driving motor for the traverse drum 16 and an upper thread catching guide means 15 and an electric part 19 for controlling the winding operation. It has been.

  Until the yarn Y unwound from the yarn feeding bobbin B disposed on the lower side of each winding unit main body is wound on the winding package P that is driven to rotate by the traverse drum 16 disposed on the upper side. During the yarn traveling path, from the yarn feeding side to the winding side, the unwinding assisting device 11, the tension device 10, the intermediate pipe 12 including the yarn clamp 12A and the suction pipe 12B, the yarn joining device 13, the clearer (yarn thick) Various yarn processing devices such as 14) are arranged.

  The unwinding assisting device 11 assists the unwinding of the yarn Y from the yarn supplying bobbin B by lowering the cylindrical body covering the core tube together with the unwinding of the yarn supplying bobbin B. The yarn splicing device 13 splics the lower yarn on the yarn feeding bobbin B side and the upper yarn on the take-up package P side when the yarn is cut by detecting a yarn defect or when the yarn breaks during unwinding. It is. The clearer 14 is for detecting a Y thickness defect. Further, the clearer 14 is provided with a cutter 14a for cutting a yarn when a yarn defect is detected.

  Further, the winding unit WA includes a cradle 17 that holds the winding bobbin Bf and a traverse drum (winding drum) 16 that traverses the yarn Y. The cradle 17 is swingable toward the traverse drum 16, whereby the winding package P wound around the winding bobbin Bf is brought into contact with or separated from the traverse drum 16. Also, the cradle 17 includes a lift-up mechanism 17a that raises the cradle 17 when the yarn breaks and separates the take-up package P from the traverse drum 16, and a take-up package held by the cradle 17 at the same time as the cradle 17 is raised. A package brake mechanism 17b for stopping the rotation of P is attached.

  Above and below the yarn splicing device 13, the upper splicing pipe 12, which is a lower yarn catching and guiding means for catching and guiding the lower yarn on the yarn feeding bobbin B side, and the upper yarn on the winding package P side are caught and guided. A yarn catching guide means 15 is provided.

The relay pipe 12 includes a suction pipe 12B and a yarn clamp 12A attached to the tip of the suction pipe 12B. At the time of yarn cutting or yarn breakage, the yarn clamp 12A of the relay pipe 12 captures the lower yarn connected to the clearer cutter 14a and the yarn feeding bobbin B at the position shown in the drawing, and turns from the bottom to the top. Guide the lower thread. At the same time, the suction mouth 15a of the upper thread catching and guiding means 15 pivots from the lower position to the upper position around the shaft 15b from the position shown in the figure, catches the upper thread from the winding package P to be reversed, and further centers on the shaft 15b. Then, the upper thread is guided to the yarn splicing device 13 by turning from top to bottom. The yarn splicing device 13 is, for example, an air splicer that splics using a swirling air flow, and the aligned lower yarn and upper yarn are spliced by the yarn splicing device 13.

  As described above, the lower thread unwound from the yarn feeding bobbin B and the upper thread on the winding package P side are wound while being spun, and the winding package P having a predetermined length and a predetermined shape is wound. It is to be formed.

  That is, one large-diameter winding package P is wound from a large number of small-diameter yarn supplying bobbins B, and the winding end of each yarn supplying bobbin B occurs each time. This unwound winding end is referred to as bobbin winding end yarn.

  In addition, when piecing, since piecing is performed in a state where it has been temporarily stopped, there is a risk that the yarn will bend when it is stopped. For this purpose, an automatic winder equipped with an anti-billing device that presses the thread so that the thread does not enter the thread is stopped. By applying the yarn splicing and running start while applying tension, it is possible to prevent the yarn from loosening and causing chatter. The applicant has already filed an application for a method and device for preventing wobbling in an automatic winder (see, for example, Patent Document 1).

When all the yarns of one yarn feeding bobbin are wound up, the empty yarn feeding bobbin (hereinafter referred to as an empty bobbin) is dispensed, and a new fully wound yarn feeding bobbin (hereinafter referred to as a full bobbin). ) Is taken in and a new winding is started. However, at the end of winding of the yarn supplying bobbin, all yarns are unwound and wound up.
JP 11-49433 A (page 1-8, FIG. 1)

  At the end of winding of the yarn supplying bobbin, the yarn end of the final winding yarn becomes a free end and is unwound and wound, so that a phenomenon that the free yarn end jumps greatly occurs. When the yarn jump occurs, the tension of the yarn greatly fluctuates, so that the yarn being wound on the winding package is displaced from a normal yarn path (track), and the package slips off from the end of the package.

  At the time of piecing, the upper yarn on the take-up package side and the lower yarn on the yarn feeding bobbin side are taken out and piecing is performed. At this time, the upper yarn is slid off from the end of the package (referred to as end face dropping). If the yarn splicing is carried out as it is and winding is started, a winding package having the drawback of falling off the end face is wound, which becomes a problem.

  A defective package having an end face drop will be used when the yarn is unwound if the end face drop is on the lower side of the package (the larger diameter side in the case of a cone package). It becomes a problem that the yarn breaks due to being caught in the thread. Further, even when the end face drop is on the upper side of the package (on the small diameter side in the case of a cone package), the yarn at the end face drop portion loosens during unraveling and the yarn tension greatly fluctuates, causing a problem. .

  For this reason, when winding a plurality of yarn supplying bobbins onto a single winding package having a large diameter, it is not sufficient to prevent twisting at the time of yarn joining. It is necessary to prevent splashing.

  In order to solve the above problem, the object of the present invention is to prevent warping during yarn splicing when winding a plurality of yarn supplying bobbins onto a single winding package having a large diameter, and to wind the yarn supplying bobbin. It is an object of the present invention to provide a control device for a winding end yarn that can prevent yarn bouncing at the end yarn end.

  In order to achieve the above object, according to the first aspect of the present invention, when winding a plurality of yarn supplying bobbins onto a single winding package having a large diameter, a standby position apart from the head of the bobbin, and the bobbin A bouncing prevention member that is movable between a position close to the head of the bobbin and a position abutting against the head of the bobbin, and that moves to the position close to the bobbin at the end of winding. It is a feature.

  According to the invention according to claim 1 having the above-described configuration, even if the yarn end at the end of winding is going to jump, it comes into contact with the yarn jump preventing member located at a close position, so that the movement of the yarn is limited and the yarn jump is prevented. Can be prevented.

  According to a second aspect of the present invention, the yarn jump preventing member includes a brush having a tip portion directed obliquely upward, a base portion in which the brush is embedded, and a rotating member that rotationally moves the base portion. The brush is movable through a member.

  According to the invention according to claim 2 having the above-described configuration, the flexible brush rotates with its tip at a free end, so that the yarn approaches or abuts the yarn feeding bobbin, so that the yarn is not damaged. Can limit the movement.

  According to a third aspect of the present invention, the position where the bobbin head abuts is the anti-brilling position, and the bobbin head and the brush pinch the thread when winding is started after piecing. Thus, it is characterized in that tension is applied to the yarn and the occurrence of chatter is suppressed.

  According to the invention according to claim 3 having the above-described configuration, the thread is clamped by the flexible brush and the bobbin head. The splicing can be performed while suppressing.

  In the invention according to claim 4, the position close to the bobbin head is a yarn jump preventing position, and the yarn end at the end of bouncing at the end of winding of each bobbin touches the brush. It is characterized by being.

  According to the invention according to claim 4 having the above-described configuration, even if the yarn end at the end of winding is bounced, the flexible brush is in the state of being close to the bobbin head, so that the yarn end is damaged. Therefore, resistance can be applied and yarn jumping can be effectively prevented.

  The invention according to claim 5 is characterized in that a sensor for detecting the end of winding of the bobbin is provided, and the tip of the brush is moved to the yarn jump prevention position by the detection of the sensor.

  According to the invention according to claim 5 having the above-described configuration, the yarn jump prevention member is quickly moved to the yarn jump prevention position upon detecting that the end of winding is near, so that yarn jump is effectively prevented. Can do.

According to the present invention, the bobbin head includes the brush of the yarn jump preventing member including the brush with the tip portion obliquely upward, the base portion in which the brush is embedded, and the rotating member that rotates and moves the base portion. Since it is freely movable to a standby position away from the bobbin head, a thread jump prevention position close to the bobbin head, and an anti-billing position abutting against the bobbin head, It is possible to obtain a winding end yarn control device capable of preventing yarn jump at the time.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a winding end yarn control device according to the present invention will be described below with reference to FIGS.

  FIG. 1 is a schematic explanatory view showing an operation state in which the winding end yarn control device according to the present invention is in a yarn jump prevention position. FIG. 2 is a schematic explanatory view showing an operation state at a position for preventing warping during yarn splicing. FIG. 3 is an overall configuration diagram showing an example of a winding unit of an automatic winder equipped with a winding end yarn control device according to the present invention.

  As shown in FIG. 3, the automatic winder to which the winding end yarn control device 1 according to the present invention is suitably applied is a yarn feeding bobbin placed on a tray T on the lower side of each winding unit U body. B is arranged and pulled out while unwinding the yarn Y wound around the yarn supplying bobbin B, and is provided in the upper winding portion WA while applying a predetermined tension via the tension device 10. The drum is wound around a large-diameter winding package P that is driven to rotate by the traverse drum 16.

  Further, the yarn Y pulled out from a large number of small-diameter yarn feeding bobbins B is applied to a single winding package P having a large diameter via a yarn processing device for appropriately processing the yarn Y traveling along the yarn path. It is the structure which winds up. Further, since the small-diameter yarn feeding bobbins B are sequentially replaced, the yarn splicing device 13 which is one of the yarn processing devices is spliced every time and wound as a continuous single yarn Y. .

  Further, as described above, every time the clearer 14 detects a defective portion of the yarn Y, the yarn Y is cut, spliced again, and wound, so that the number of splicing is further increased.

  Therefore, during the winding process of the yarn Y, the traveling of the yarn Y is frequently stopped, and stop, yarn joining, resuming traveling, high speed traveling, and stopping are repeated. The yarn tension of the yarn will fluctuate greatly.

  When the thread tension decreases and the thread loosens, warping occurs. If the bill is wound on the winding package P as it is, it will become a resistance when unwinding later, which may cause unwinding failure or tension fluctuation, and may cause the worst yarn breakage. In addition, if piecing is performed at a portion where the warp is generated, the piecing is poor, and normal piecing and winding cannot be performed.

  Therefore, in the present invention, when winding a plurality of yarn supplying bobbins B onto a single winding package P having a large diameter, the yarn end at the end of winding of the yarn supplying bobbin is prevented while preventing warping at the time of yarn splicing. The end-of-winding yarn control device that can prevent the yarn from bouncing is used.

  Next, referring to FIG. 1 and FIG. 2, the winding end yarn control device according to the present invention will be described in detail.

The winding end yarn control device 1 according to the present invention includes a yarn jump preventing member including a brush 3, a base 2 that embeds the brush 3, and a rotating member 4 that rotates and moves the base 3. FIG. 2 is configured to be freely displaceable between a yarn jump preventing position shown in FIG. The yarn jump prevention position means that the yarn end at the end of winding is prevented from bouncing, and the billet prevention position is a position that prevents the occurrence of bristle that is likely to occur at the time of yarn splicing. Means that. For that purpose, the standby position 1A where the brush 3 is separated from the bobbin via the rotating member 4, the yarn jump preventing position 1B close to the bobbin head, and the anti-shrinking position 1C contacting the bobbin head, It is configured to be freely movable.

  The state in which yarn jump is prevented is a state in which the brush 3 stands by at a position slightly away from the bobbin head. Moreover, the state which prevents a chatter is the state which the said brush 3 contact | abutted to the bobbin head. This is because during yarn splicing, the yarn splicing is performed while pulling out the yarn, and winding is resumed after the splicing is completed, so that the yarn is clamped between the bobbin head and the brush 3 and the yarn is pulled out while applying tension. This is to prevent the occurrence of chatter.

  The operation state for preventing yarn jumping is a state in which the yarn end at the end of winding of each yarn feeding bobbin generated during winding is free, and the yarn jumping when being wound while being bounced is suppressed, The brush 3 is arranged close to the bobbin head. Therefore, the brush 3 is close to a position separated from the bobbin by a distance E.

  In this state, the winding operation of the remaining yarn Y1 during winding is not hindered. Further, even if the yarn end at the end of winding is about to jump, the yarn end comes into contact with the brush 3 and receives resistance, so that the yarn jumping stops and is wound as it is, and the yarn end is kept in a state where the yarn jump is suppressed. Can be wound into a package.

  The distance E is preferably such that the yarn Y unwound from the yarn feeding bobbin B can be inserted without resistance, and is close enough to contact the yarn end when the yarn jumps.

  The brush 3 is formed in a shape in which brush bristles made of resin or synthetic fiber are raised, planted, or fitted into the base portion 2 and the tip portion is directed obliquely upward, and is rotated in the horizontal direction as it is. When approaching the bobbin, the upward tip portion, which is a free end (free), comes into contact with the outer periphery of the bobbin, and the base portion on the lower side of the base is not in contact. In addition, the bobbin B is in contact with the head near the top of the yarn feeding bobbin B, and even when the bobbin is fully wound, it does not contact the bobbin thread layer and directly contacts the bobbin head. It is the structure which touches.

  In this state, the tip of the brush 3 having elasticity and flexibility comes into contact with the bobbin head and presses the yarn, so that the yarn Y is prevented from running only by applying tension to the yarn Y being wound. do not do.

  As the above-described yarn jump preventing member, various members having elasticity and flexibility such as a wire and cloth can be applied in addition to the brush. However, if the brush 3 according to the present embodiment is used, the winding resistance of the yarn Y can be suppressed to a minimum by arranging the bristles in the winding direction of the yarn Y. Furthermore, even if a displaceable hair tip is brought into contact with the bobbin head, it is preferable that the yarn Y is not excessively pressed.

  In order to detect that the yarn supplying bobbin B is the remaining yarn bobbin B1 in a state where the remaining yarn is slightly remaining, in this embodiment, the bobbin ground and the yarn layer portion are identified and the remaining yarn bobbin B1. It is set as the structure which provides sensor S1 which detects that. Even if the sensor S1 is not used, the winding amount of the yarn feeding bobbin B is stored in advance, and after a predetermined winding time has elapsed, the winding is finished and the time when the remaining yarn bobbin B1 is reached is estimated. The method is not particularly limited.

  When the sensor S1 detects that the yarn Y has been unwound from the yarn supplying bobbin B to become the remaining yarn bobbin B1, the rotating member 4 is driven by a command from a control device (not shown) on the main body side, and waits. The brush 3 at the position 1A is rotated to the yarn jump prevention position 1B.

  As described above, even when the brush 3 is at the yarn jump prevention position 1B, the running of the yarn Y being wound is not hindered. However, when the end of the yarn end Y1 at the end of winding becomes free, the yarn end that has jumped can come into contact with the brush 3 to suppress the yarn jump.

  Furthermore, since the brush 3 is formed in a free state in which the tip of the bristle is directed obliquely upward, it does not hinder the traveling of the yarn Y that is wound up while being pulled up, and the winding is obstructed. It only gives resistance to the yarn. Further, since the bristles have a length obliquely above, there is a certain tolerance for the size of the yarn feeding bobbin and the winding position of the wound yarn, and it is possible to flexibly cope with it. Furthermore, it is obvious that if the entire winding end yarn control device 1 is configured to be movable up and down integrally, it is possible to easily cope with the change in the size of the yarn feeding bobbin.

  The base 2 is a resin-made round and smooth shape, and is a member that does not damage the yarn even if the yarn Y comes into contact therewith. Further, when starting winding by tying the yarn, the tip of the brush is brought into contact with the head of the bobbin, but only the flexible brush tip is brought into contact with the bobbin, so that the bobbin is not damaged. The thread Y to be clamped is not damaged.

  As described above, according to the present invention, when winding a plurality of yarn supplying bobbins onto a single winding package having a large diameter, the brush with the tip portion obliquely upward, the base embedded with the brush, and the base are The brush of the yarn jump preventing member having a rotating member that rotates and moves the brush, the standby position away from the head of the bobbin, the yarn jump preventing position close to the head of the bobbin, and the head of the bobbin It is possible to move to the anti-brilling position where it comes into contact with the bobbin head at the time of piecing, and the bristles can be prevented at the end of winding of each bobbin. It is possible to obtain a winding end yarn control device capable of preventing splashing.

It is a schematic explanatory drawing which shows the operation state which has the control apparatus of the winding end yarn which concerns on this invention in a yarn jump prevention position. It is a schematic explanatory drawing which shows the operation state which exists in the wrinkle prevention position at the time of yarn splicing. It is a whole lineblock diagram showing an example of a winding unit of an automatic winder provided with a control device of end winding yarn concerning the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 End-of-winding thread control device 1A Standby position 1B Thread jump prevention position 1C Anti-twist position 2 Base 3 Brush (thread jump prevention member)
4 Rotating member B Yarn supply bobbin B1 Remaining yarn bobbin E Clearance
U Winding unit Y thread Y1 thread end

Claims (5)

When winding from a plurality of yarn feeding bobbins onto a single winding package of large diameter,
It is movable to a standby position away from the bobbin head, a position close to the bobbin head, and a position abutting against the bobbin head, and close to each bobbin at the end of winding. A winding end yarn control device comprising a yarn jump preventing member that moves to a position.   The yarn jump preventing member includes a brush having a tip portion obliquely upward, a base portion in which the brush is embedded, and a rotating member that rotates the base portion, and the brush is moved via the rotating member. The winding end yarn control device according to claim 1, wherein the winding end yarn control device is flexible.   The position where the bobbin head abuts is the anti-flickering position, and when starting winding after tying the yarn, the bobbin head and the brush pinch the yarn to apply tension to the yarn. 3. The winding end yarn control device according to claim 1, wherein occurrence of chatter is suppressed.   The position close to the head of the bobbin is a yarn jump preventing position, and is a position where the yarn end at the end of bouncing at the end of winding of each bobbin is in contact with the brush. The winding end yarn control device according to any one of 1 to 3. 5. The end-of-winding yarn according to claim 4, wherein a sensor for detecting the end of winding of the bobbin is provided, and the tip of the brush is moved to the yarn jump prevention position by detection of the sensor. Control device.

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