JP2004277949A - Spinning machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a tightening amount from being decreased from a prescribed amount when controlling a winding tension by using a loosened yarn-tightening device in a yarn-winding process in a spinning machine. <P>SOLUTION: When the tightening amount of the loosened yarn-tightening device 10 is detected that the amount is decreased from the prescribed amount, the tightening amount is increased by reducing the winding speed by separating the package 16 from the rotary drum 13 when winding the yarn spun by the spinning device 5 by a winding device 12 on the package 16 while tightening the yarn Y by the loosened yarn-tightening device 10. At this time, the speed-reducing state of the winding speed is regulated by controlling the separating time according to a winding diameter of the package. When increasing the tightening amount, the optimum speed-decreased state is set according to the difference of the moment of inertia of the package because the speed-decreasing time, the speed-decreasing amount or the like of the winding speed is regulated by considering a winding diameter of the package when increasing the tightening amount. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a spinning machine in which a winding tension is controlled by using a yarn slack removing device, and more specifically, a slack amount stored in a slack removing roller of the yarn slack removing device is less than a predetermined amount. The purpose is to prevent it.
[0002]
[Prior art]
When a spun yarn is formed by a spinning device using a sliver (fiber bundle) as a raw material, and the spun yarn is wound into a package by a winding device to form, for example, a cone-wound package, particularly, winding immediately before winding is performed. If the tension control is not performed, there is a problem that the tension of the yarn periodically varies according to the traverse. This is because the yarn winding speed (peripheral speed of the package) differs between the small-diameter side and the large-diameter side of the cone-winding package, and the slack amount increases on the small-diameter side where the winding speed is low, and the winding speed is large. This is because the slack amount decreases on the radial side.
[0003]
Therefore, in order to address the above problem, a yarn slack removing device having a slack removing roller for winding the yarn is provided between the spinning device and the winding device, and the winding tension is adjusted by changing the slack amount stored in the slack removing roller. Japanese Patent Application Laid-Open Publication No. HEI 11-163556 discloses a technique for performing the above. The technology described in Patent Document 1 absorbs fluctuations in tension (winding speed) by increasing or decreasing the amount of slack stored in the slack removing roller in accordance with fluctuations in the winding speed of the package. That is, when the winding speed of the yarn is higher than the spinning speed, the slack amount stored in the slack removing roller is reduced, and when the winding speed is lower, the slack amount is increased. It is thought that it is possible to absorb the fluctuation of the speed).
[0004]
[Patent Document 1]
West German Patent No. 553892
[0005]
[Problems to be solved by the invention]
In the yarn slack removing device as described in Patent Literature 1, it is necessary to maintain a state in which the yarn is wound around the slack removing roller in order to absorb fluctuations in the yarn tension. Therefore, when the slack amount stored in the slack removing roller is almost exhausted, it is necessary to detect this and reduce the rotational speed of the package to restore the slack amount stored in the slack removing roller to a predetermined amount. . However, the package has a different weight depending on the winding diameter and a different moment of inertia. That is, even if the deceleration processing time is the same, a difference occurs in the deceleration amount. Therefore, there has been a case where the slack amount stored in the slack removing roller cannot be restored to a predetermined amount only by uniformly reducing the rotation of the package.
[0006]
[Means for Solving the Problems]
An object of the present invention is to reliably prevent a slack amount stored in a slack removing roller of a yarn slack removing device from being insufficient in a spinning machine provided with a slack removing device. Claim 1 is a spinning machine devised for this purpose, which is characterized by a spinning device that generates and spins a yarn from a fiber bundle, and a winding device that winds the spun yarn into a package. A spinning device having a take-up device and a yarn slack removing device having a slack removing roller for winding a yarn between the spinning device and the winding device and absorbing a change in winding tension. A speed reduction control means for performing speed reduction control so as to be smaller, a winding diameter detection means for the package, and an adjustment means for adjusting the speed reduction control amount of the speed reduction control means in accordance with the winding diameter of the package.
[0007]
The spinning machine of the present invention configured as described above increases the slack amount stored in the slack removing roller of the yarn slack removing device by reducing the winding speed of the package. Therefore, the amount of increase in the slack amount can be set to an appropriate amount without excess or deficiency. The adjustment of the deceleration control amount includes a case where the deceleration processing time is adjusted and a case where the deceleration acceleration is adjusted.
[0008]
According to a second aspect of the present invention, the spinning machine further includes a winding amount detecting unit configured to detect a winding amount of the yarn in the slack removing roller, and based on the winding amount detected by the detecting unit, the deceleration control unit controls the deceleration control unit. It can be set so as to output a winding speed reduction control signal.
[0009]
According to the above spinning machine, if the slack amount is smaller than the predetermined amount, the winding speed of the winding device is reduced to be lower than the spinning speed of the spinning device, and the slack removing roller of the yarn slack removing device is reduced. Since the slack amount stored in the slack removing roller is increased, the slack yarn stored in the slack removing roller does not disappear.
[0010]
In the spinning machine, as described in claim 3, the winding amount detecting means is provided immediately upstream of the slack removing roller and comprises a yarn tension detecting means for detecting a yarn tension immediately before being wound by the slack removing roller. In this case, the slack amount stored in the slack removing roller of the yarn slack removing device may be calculated based on the yarn tension detected by the yarn tension detecting means. In this case, the slack amount can be detected with a simple mechanism.
[0011]
Further, the spinning machine according to the present invention includes a rotating drum that rotates the package while rotating the winding device while contacting the package, as described in claim 4, wherein the deceleration control unit includes a rotating drum that rotates the package. And a mechanism for adjusting the separation time of the package as a deceleration control amount of the deceleration control means according to the winding diameter of the package. In this case, it is possible to perform the appropriate deceleration processing of the package while realizing cost reduction by a simple control mode.
[0012]
According to a fourth aspect of the present invention, in the spinning machine according to the fifth aspect, when the winding device includes a traverse device having a traverse guide, the deceleration control unit controls the yarn to be wound. It is desirable to provide a mechanism for separating the package from the rotating drum within a range not to separate from the traverse guide.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present specification, "upstream / downstream" refers to upstream / downstream with respect to the running direction of the yarn during spinning. Specifically, the spinning device side is upstream and the winding device side is downstream.
[0014]
[First Embodiment]
FIG. 1 is a front view showing an example of a spinning machine 1 to which the present invention is applied, and FIG. 2 is an enlarged view schematically showing a partial internal structure of the spinning machine 1.
[0015]
The spinning machine 1 including, for example, a pneumatic spinning machine includes a control unit 1A, a spinning unit 1B in which a large number of spinning units 2 are arranged side by side, a blower unit 1C, and a piecing device. The work cart 3 which can be run freely is a main component. In the present embodiment, the spinning machine 1 is applied to the formation of a cone-wrapped package, but can be used to form a cheese-wrapped package.
[0016]
The control unit 1A of the spinning machine 1 includes drive motors 31, 32, and 33 for driving shafts 41, 42, and 43 that apply a driving force to all the spinning units 2 constituting the spinning unit 1B. It controls the operations of the motors 34 and 35 provided for each of the motors 2 and the winding device 12 and the like.
[0017]
In the present embodiment, based on various set values (spinning speed, ratio between the spinning speed and the take-up roller speed, etc.) input to the input unit a, the calculating unit b controls the motors 31 to 34 to operate the inverter c. Alternatively, spinning speed information is output via the driver board 30. Further, rotation speed information of a slack removing roller (described later) is output to a motor 35 of the thread slack removing device 10 via a driver board 40.
[0018]
The spinning unit 1B is configured by arranging a large number of spinning units 2 side by side. Each spinning unit 2 is configured so that operating conditions can be individually set, and includes a yarn slack removing device 10 together with the spinning device 5 and the winding device 12. Details of the structure of the spinning unit 2 will be described later.
[0019]
The blower unit 1C accommodates a negative pressure supply unit that applies a negative pressure (suction pressure) to a required portion of the spinning unit 2 through an air duct, and for example, applies a negative pressure to the yarn suction device 7 or the like. Let it work.
[0020]
The work vehicle 3 can travel on the rail R, move to a corresponding spinning unit 2 position, and stop based on a splicing request signal transmitted from any spinning unit 2 requiring splicing. As shown in FIG. 3, which is a side cross-sectional view schematically showing the configuration of the spinning section 1B, the end of the yarn formed by the yarn splicing device 17 such as a knotter or a splicer and the spinning device 5 is shown. A suction pipe 18 for sucking and guiding to the piecing device 17, a suction mouth 19 for sucking the yarn end of the package 16 supported by the winding device 12 and guiding to the piecing device 17, and contacting the yarn Y when necessary (FIG. 12) A tension arm 20 for applying a yarn tension is provided.
[0021]
In addition, an example in which the yarn splicing device 17, the suction pipe 18, and the suction mouth 19 are provided for each of the spinning units 2 is also considered. By loading the suction pipe 18 and the suction mouth 19, the yarn splicing operation for all the spinning units 2 can be performed with only one set, so that the structure of the spinning machine 1 can be simplified.
[0022]
The suction pipe 18 for splicing provided in the work cart 3 functions as a suction member at the yarn end on the spinning side. The suction pipe 18 has a suction port 18a at the tip and is rotatable around a pivot 18b. Has been done. At the time of the piecing operation, the suction port 18a is rotated upward to position the suction port 18a near the yarn discharge port of the spinning device 5, and the yarn end of the spun yarn Y is suctioned. By rotating downward to the position, the yarn Y1 on the spinning side is guided to the piecing device 17. On the other hand, the suction mouth 19 functions as a suction member for the winding-side yarn end, has a suction port 19a at the tip, and is rotatable about a pivot 19b. At the time of the splicing operation, after the package 16 is stopped from rotating, the package 16 is rotated in a direction opposite to the normal direction, and the suction end 19 a of the suction mouth 19 a at the tip of the suction mouth 19 is rotated downward. After the yarn is taken out by suction and capture, the yarn Y on the package 16 side is guided to the piecing device 17 by rotating upward to the initial position in the suction state. At the time of executing the work, the piecing device 17 pulls the yarn on the spinning device 5 side and the yarn on the winding device 12 near the piecing device 17 by using a yarn pulling lever (not shown) of the piecing device 17 at both ends. Is clamped and taken into the piecing operation executing section to execute the piecing operation.
[0023]
A plurality of spinning units 2 provided in the spinning unit 1B are one unit of a mechanism for manufacturing a yarn from a fiber bundle S as a raw material. 3, the draft device 4, the spinning device 5, the yarn feeding device 6, the yarn suction device 7, and the cutter 8 are arranged in order from the upstream side to the downstream side of the yarn path E, as shown in FIG. , A yarn defect detector 9, a yarn slack removing device 10, a waxing device 11, and a winding device 12.
[0024]
As the draft device 4, for example, a four-wire type including a second roller 4d and a front roller 4e having a back roller 4a, a third roller 4b, and an apron 4c stretched from the upstream side is applied. The spinning device 5 is a pneumatic type that generates a spun yarn Y (hereinafter simply referred to as “yarn Y”) from the fiber bundle S using a swirling airflow, for example, a spinning speed of several hundred m / min. Those that can perform high-speed spinning are used. In addition, the spinning device 5 can be replaced with another structure such as a device that generates a yarn Y by a pneumatic spinning nozzle and a twisted roller pair, or an open-end spinning machine that generates the yarn Y by rotating a rotor. is there. The yarn feeder 6 includes a nip roller 6a and a delivery roller 6b, and holds the yarn Y between the rollers 6a and 6b to feed the yarn Y to the downstream side. The yarn suction device 7 is always in a suction state, and when the yarn defect detector 9 detects a defect of the yarn Y, the yarn suction device 7 sucks and removes a fragment of the yarn Y cut by the cutter 8.
[0025]
The winding device 12 is for winding a yarn Y around a bobbin 15 held on a cradle arm 14 to form a package 16. The winding device 12 includes a rotating drum 13 that contacts the bobbin 15 or the package 16 to rotate the same. Prepare. The cradle arm 14 is configured to be swingable about a swing shaft 14a, and the contact operation and the separation time of the bobbin 15 or the package 16 with respect to the rotating drum 13 are controlled by a swing control mechanism 60 that is a winding speed reduction control means. It is configured to be controllable. The swing control mechanism 60 according to the present embodiment includes an air cylinder 64 having a piston rod 65 connected to one end of the cradle arm 14, a compressed air supply source for supplying compressed air for contact and separation to the air cylinder 64, and an air cylinder 64. A solenoid valve device 63 for switching the supply path of the compressed air to the controller, a controller 62 for controlling the operation of the solenoid valve device 63, and a unit controller 61 for outputting a control signal to the controller 62.
[0026]
At the time of normal spinning, the swing control mechanism 60 always causes the contact pressure air to act on the air cylinder 64 to retreat the piston rod 65 and press the package 16 against the rotary drum 13 with a predetermined contact pressure. When necessary, the package 16 is separated from the rotary drum 13 by causing the air cylinder 64 to act on the separation pressure air having a pressure higher than the contact pressure air, thereby extending the piston rod 65. At this time, the length and timing of separating the package 16 from the rotating drum 13 are controlled by the unit controller 61. That is, the unit controller 61 performs a calculation based on the spinning condition data input in advance, such as the yarn type, the yarn count, and the spinning speed, and the operation time of the spinning machine measured by the timer unit. A control signal required to execute the operation is output to the controller 62 in accordance with the winding diameter of the package 16, that is, in accordance with the package weight.
[0027]
As shown in FIGS. 10 to 12, the slack removing device 10 is concentric with the slack removing roller 21 that wraps the slack yarn Y around the outer peripheral surface 21a and stores the slack removing roller 21 according to conditions. The rotating unwinding tension applying member 22, an upstream guide 23 arranged slightly upstream of the slack removing roller 21, a driving means 35 such as a stepping motor for driving the slack removing roller 21 to rotate, and the driving means 35 It includes a driver board 40 to be controlled (see FIG. 2) and a downstream guide 36 provided at a position downstream of the slack removing roller 21 and having a slit 36a. These are fixed to the spinning unit 2 by a bracket 37 or the like. I have.
[0028]
As shown in FIG. 12, the slack removing roller 21 is fixed to the drive shaft 35a of the drive means 35 and rotates integrally with the drive shaft 35a. Therefore, the rotation of the slack removing roller 21 can be controlled in accordance with the rotation speed set by the calculation unit b. Further, assuming that the side having the unwinding tension applying member 22 is the distal end P and the side connected to the driving means 35 is the proximal end Q, the outer peripheral surface 21a has the proximal end Q side and the distal end P side facing the end surface. Tapered portions 21b and 21d whose diameters are increased are formed, and a middle portion thereof is a cylindrical portion 21c having the same diameter. Then, the yarn Y spun from the spinning device 5 is wound around the outer peripheral surface 21a from the base end Q side. It is unwound from the leading end P toward the winding device 12 (see FIGS. 7 and 8). The tapered portion 21b on the base end Q side smoothly moves the yarn Y supplied from the spinning device 5 and wound around the outer peripheral surface 21a from the large-diameter portion 21b-1 to the small-diameter portion 21b-2 to the intermediate cylindrical portion 21c. By having it reach, it has a function of regularly winding the yarn Y around the surface of the cylindrical portion 21c. The tapered portion 21d on the leading end P side prevents the looped-out phenomenon in which the wound yarn Y comes off at one time during unwinding, and simultaneously reduces the wound yarn layer from the small-diameter portion 21d-2 to the large-diameter portion 21d-1. And has a function of ensuring that the yarn Y is smoothly pulled out.
[0029]
As shown in FIG. 12, the unwinding tension applying member 22 provided on the leading end P side of the slack removing roller 21 is configured by attaching a flyer 22a to the roller 21 so as to be concentrically rotatable via a transmission force adjusting mechanism. is there. The configuration of the transmission force adjusting mechanism is as follows. That is, a wheel member 22b is rotatably mounted on a shaft portion 21e protruding from a central portion of the roller 21 via a bearing member 22c such as a bearing, and the base of the flyer 22a is attached to the wheel member 22b. The wheel member 22b is screwed into a bolt portion at the tip of the shaft portion 21e, for example, a transmission force adjusting operation portion 22g including a nut member 22d, a pressing member 22e, and the like. The force applying member 22f is attached by preventing it from coming off. Therefore, the transmission force adjusting mechanism of the present embodiment can adjust the pressing force (frictional force) of the transmission force applying member 22f steplessly by the tightening operation of the transmission force adjusting operation portion 22g screwed into the bolt portion of the shaft portion 21e. And When the transmission force adjustment member 22d of the transmission force adjustment mechanism is exposed to the leading end side of the slack removing roller 21 as in this embodiment, the transmission force adjustment work by the operator can be easily performed.
[0030]
The transmission force adjusting mechanism is capable of adjusting the magnitude of the rotational resistance of the flyer 22a with respect to the slack removing roller 21. That is, if the degree of tightening of the transmission force adjusting member 22d such as a nut member is weakened, the pressing force (or frictional force) of the transmission force applying member 22f against the wheel member 22b is weakened, and only a slight load is applied. As a result, the fryer 22a slips, and can be rotated independently of the rotation of the slack removing roller 21. Conversely, if the tightening degree of the transmission force adjusting member 22d is increased, the pressing force of the transmission force imparting member 22f against the wheel member 22b is increased, and the flyer 22a does not slip unless a very large load acts. , Following the slack removing roller 21 and integrally rotating. As described above, the transmission force adjusting mechanism of the present embodiment continuously changes the pressing force (frictional force) of the transmission force applying member 22f by the tightening operation of the transmission force adjusting member 22d such as a nut member screwed to the shaft portion 21e. Adjustable.
[0031]
Therefore, the unwinding tension applying member 22 of the present embodiment can adjust the degree of tightening of the pressing member 22e to change the behavior of the fryer 22a, which can rotate independently of the loosening roller 21, from the loosening roller 21. It can be adjusted in relation to the tension of the yarn Y to be unwound. That is, the unwinding tension of the yarn Y from the slack removing roller 21 that varies depending on the spinning conditions such as the yarn type and the yarn count can be adjusted in advance by the transmission force adjusting mechanism. The behavior of the fryer 22a is determined by the interaction between the rotational force transmitted from the slack removing roller 21 via the transmitting force imparting member 22f and the tension of the yarn Y unwound from the slack removing roller 21. Conversely, if the behavior of the fryer 22a is adjusted in advance by the transmission force adjusting mechanism, the magnitude of the resistance that the fryer 22a applies to the yarn Y unwound from the slack removing roller 21 can be set in advance. Become. That is, for the unwinding tension applying member 22 including the fryer 22a, the transmission force adjusting mechanism functions as an unwinding tension adjusting mechanism.
[0032]
The flyer 22a of the present embodiment employs a characteristic shape as described below in order to reliably wind the yarn Y around the outer peripheral surface 21a of the slack removing roller 21. In other words, the fryer 22a extends gently from the base attached to the wheel member 22b to a position slightly protruding in the direction opposite to the base end Q from the front end P of the slack removing roller 21, and further from the inside. It is set so that it bends at three places of m, l, and k in order, and the leading end j is located outside the radius of the slack removing roller 21. Of the three bent portions, two bent portions k and l are outside the radius of the roller, and one bent portion m is located within the radius of the large diameter portion 21-d of the roller 21. At the inward bending point m, the flyer 22a is bent outward in the radial direction opposite to the rotation direction of the slack removing roller 21 at the time of winding the yarn, and at the next bending point l, the proximal end Q side of the slack removing roller 21 It is formed so as to be bent in the outer bending portion k in the rotation direction of the slack removing roller 21 at the end. Accordingly, a thread engaging portion R having an angle that opens outward in the rotation direction of the slack removing roller 21 is formed in the fryer 22a by the distal end portion j, the bent portion k, and the bent portion l. Is located above the outer peripheral surface 21a between the leading end P and the proximal end Q of the slack removing roller 21 while maintaining a predetermined distance from the outer peripheral surface 21a. The fryer 22a having such a configuration has a preferable shape in that the yarn Y engaged at the time of slack removal is rotated with the slack removing roller 21 so as to be stably wound around a predetermined position on the slack removing roller outer peripheral surface 21a. ing. Further, it has the effect of reliably preventing the yarn Y from getting stuck in the gap between the slack removing roller 21 and the fryer 22a.
[0033]
Note that the yarn slack removing device 10 of the present embodiment is provided with a yarn tension detecting device 50 that detects the tension of the yarn Y immediately upstream of the slack removing roller 21. As shown in FIGS. 11 and 12, the yarn tension detecting device 50 has a substantially L-shaped wire rod 51 disposed on the upstream side near the base end Q of the slack removing roller 21, and rotates in the middle of the wire rod 51. It is composed of a pivotally supporting portion 52 that can be supported, and a switching member 54 such as a microswitch that outputs an ON operation signal when a distal end portion 53 of the wire rod 51 is brought into contact with and applied with a predetermined pressing force or more.
[0034]
In a state where the yarn Y is not wound around the slack removing roller 21 (see FIGS. 4 and 5), the wire rod 51 is arranged so as not to contact the yarn Y, so that no force acts on the wire rod 51, Since the end portion 53 does not apply the pressing force, the switching member 54 does not perform the ON operation (see the solid line in FIG. 11B). When the yarn Y is wound around the slack removing roller 21, the yarn Y comes into contact with the wire rod 51 and the wire rod 51 is pressed by the tension of the yarn Y. As a result, two points are shown in FIG. As shown by the dashed line, the wire rod 51 rotates about the pivot 52 and presses the switching member 54 at the distal end 53. Then, when a predetermined or more thread tension acts on the wire rod, and the pressing force by the end portion 53 becomes a predetermined value or more, the switching member 54 is turned ON and outputs an operation signal to the unit controller 61.
[0035]
As described above, the pressing force of the wire rod end 53 against the switching member 54 depends on the magnitude of the tension of the yarn Y that contacts the wire rod 51. That is, ON / OFF of the switching member 54 is switched according to the magnitude of the tension of the yarn Y. The magnitude of the tension of the yarn Y is determined by the winding amount (slack amount) of the yarn Y on the slack removing roller 21. This is because, when the amount of winding of the yarn Y is large, the sliding friction resistance between the yarn Y and the slack removing roller 21 is large, so that the yarn Y does not easily slide on the surface of the slack removing roller 21, and therefore, the slack is not generated. The tension of the yarn Y on the upstream side of the take-up roller 21 increases. Conversely, when the winding amount of the yarn Y is small, the yarn Y easily slides on the surface of the slack removing roller 21, and the tension of the yarn Y on the upstream side of the slack removing roller 21 decreases. Accordingly, when the slack amount of the yarn Y in the slack removing roller 21 is large, the thread tension is large, and the switching member 54 maintains the ON operation, and when the slack amount of the yarn Y decreases, the thread tension decreases. The member 54 is turned off. With such a mechanism, the yarn tension detecting device 50 of the present embodiment determines whether the slack amount of the yarn Y in the slack removing roller 21 exceeds a predetermined amount by appropriately setting the yarn tension at which the switching member 54 is turned ON. Since it can be detected whether or not it is insufficient, it functions as a winding amount detecting means. Therefore, the amount of slack can be detected by a simple mechanism without optically detecting the amount of winding around the slack removing roller 21 or contacting the yarn Y wound on the slack removing roller 21.
[0036]
The upstream side guide 23 disposed at the upstream position of the yarn slack removing device 10 has the upstream yarn end pulled toward the slack removing roller 21 just before the yarn joining by the yarn joining device 17 at the time of splicing. In order not to fail to supply the upstream yarn end to the piecing device 17, a position where the yarn Y is not engaged with the unwinding tension applying member 22 (the yarn Y is not taken up by the slack removing roller 21). Position) or the yarn splicing device 17 performs splicing. In order to absorb slack of the yarn generated when the upstream yarn end of the splicing device 17 is clamped, the unwinding tension applying member 22 is used. When the winding of the yarn Y around the slack removing roller 21 is started, the drive is driven forward and backward. The work carriage 3 is provided with advance / retreat means 24 composed of an air cylinder or the like for driving the upstream guide 23 forward / backward, and control means (not shown) for controlling this. That is, the upstream side guide 23 is a yarn moving unit, and the advance / retreat unit 24 is a driving unit thereof. The upstream guide 23 holds the yarn path at a position where the yarn Y does not engage with the yarn slack eliminating device 10 when the yarn Y is in the forward position, and holds the yarn Y when the yarn Y is retracted. The yarn path is set to be moved to a position where the yarn path is engaged with the flyer 22a and wound up by the slack removing roller 21. The fryer 22a is arranged so as to be able to engage with the yarn Y on the yarn path connecting the upstream guide 23 and the downstream guide 36 at the retreat position at the shortest distance. That is, the rotating surface of the fryer 22a that rotates together with the slack removing roller 21 is set so as to intersect the yarn path.
[0037]
The operation in the case of forming a cone winding package by the spinning machine 1 configured as described above will be described below. As shown in FIGS. 3 to 5, when the spinning unit 2 in a state where the work cart 3 is not stopped is performing a normal operation, the upstream guide 23 of the yarn slack removing device 10 pulls a spring or the like (not shown). It is in the retracted position by being forcibly pulled by the member. In this state, the yarn winding operation is performed, and in each spinning unit 2 of the spinning machine 1, the fiber bundle S is sent to the spinning device 5 by the draft device 4, and the yarn Y spun and generated by the spinning device 5 is converted into a yarn. After being fed to the downstream side by the feeding device 6 and passing just before the yarn suction device 7 and the yarn defect detector 9, the yarn is sent to the winding device 12 via the upstream guide 23, the downstream guide 36, the waxing device 11. Send out. Then, the yarn Y is wound around the bobbin 15 which is driven to rotate by the rotating drum 13 to form the package 16.
[0038]
After the winding of the yarn is started, a rotation command is output to the drive motor 35 of the slack removing roller 21 via the driver board 40 (see FIG. 2) at an appropriate timing to rotate the slack removing roller 21 as shown in FIG. It is driven to maintain this rotational drive state during normal spinning. As described above, the rotation track surface of the fryer 22a provided on the slack removing roller 21 is set so as to intersect the yarn path defined by the upstream guide 23 and the downstream guide 36. By rotating the roller 21, the flyer 22a naturally engages with the yarn Y. Further, the shape of the fryer 22a is such that the yarn Y can be easily engaged with the yarn Y and the yarn Y is difficult to fit into the gap between the roller 21 and the fryer 22a. Can be introduced. Therefore, just by rotating the slack removing roller 21, the yarn Y can be reliably wound around the outer peripheral surface of the slack removing roller 21 as shown in FIGS. 7 and 8. The rotation speed of the slack removing roller 21 is based on the spinning speed of the yarn Y in the spinning device 5 (substantially, the yarn feeding speed of the yarn feeding device 6), and the rotation speed of the yarn feeding device 6 immediately after the yarn is spun. The calculation unit b calculates and sets the input value of the input unit a so that the tension of the yarn Y sent to the side becomes appropriate.
[0039]
The yarn slack removing device 10 has a function of eliminating the slack of the yarn Y in the yarn path by winding the yarn Y around the slack removing roller 21 and adjusting the winding tension of the yarn Y by increasing or decreasing the amount of slack. Demonstrate. The mechanism is described below. The slack amount of the yarn Y stored in the slack removing roller 21 is a difference between the spinning speed on the upstream side of the slack removing roller 21 and the winding speed on the downstream side (the unwinding speed of the yarn from the slack removing roller 21). I can decide. At the time of normal winding, the winding speed is set to be slightly higher than the spinning speed in order to impart an appropriate winding tension to the yarn Y, and a load corresponding to the speed difference acts on the fryer 22a. This is because when the spinning speed is higher, the supply amount of the yarn Y to the slack removing roller 21 always exceeds the amount of the yarn Y unwound toward the winding device 12, and as a result, the slack removing roller 21 This is because the amount of yarn wound around the tape is increased.
[0040]
As described above, the fryer 22a is rotatable independently of the slack removing roller 21, and the rotational driving force transmitted from the slack removing roller 21 to the fryer 22a is adjustable by the transmission force adjusting mechanism. Therefore, when the load acting on the fryer 22a is equal to or less than a predetermined value, the fryer 22a rotates integrally with the slack removing roller 21 to wind the yarn Y around the slack removing roller 21, and operates to increase the amount of slack. Conversely, when the load exceeds a predetermined value, the fryer 22a rotates or rotates independently of the slack removing roller 21 to allow the yarn Y to be unwound from the slack removing roller 21. Therefore, a predetermined winding tension can be applied to the yarn Y by appropriately setting the magnitude of the load at which the flyer 22a independently rotates (rotates) by the transmission force adjusting mechanism. At this time, if the winding speed does not fluctuate and remains constant, the yarn Y wound around the slack removing roller 21 is unwound at a substantially constant rate.
[0041]
When forming a cone-wound package, the winding speed varies because the winding radius of the yarn changes within one traverse. When the winding speed on the downstream side increases, the amount of rotation or the amount of rotation of the flyer 22a independent of the slack removing roller 21 increases, and the unwinding amount of the yarn Y increases, thereby allowing the winding speed to increase. Conversely, when the winding speed decreases, the amount of rotation or the amount of rotation of the flyer 22a independent of the slack removing roller 21 decreases, and the unwinding amount of the yarn Y decreases, thereby allowing the winding speed to decrease. In any of the above cases, the winding tension can be determined by a transmission force adjusting mechanism between the slack removing roller 21 and the flyer 22a. Therefore, a stable winding tension can be provided without depending on the increase or decrease of the winding speed. The yarn slack removing device 10 of the present embodiment has a function of allowing the fluctuation of the winding speed that occurs during the winding operation of the cone-wound package and stabilizing the winding tension by the mechanism as described above.
[0042]
Since the yarn slack removing device 10 of the present embodiment employs a configuration in which the flyer 22a and the slack removing roller 21 are connected via a transmission force adjusting mechanism, the fryer 22a rotates or rotates independently of the slack removing roller. It is possible to easily change the magnitude of the load when performing. Therefore, it is easy to cope with the winding tension that changes depending on various spinning conditions such as the yarn type, yarn count, and spinning speed.
[0043]
By the way, in order that the yarn slack removing device 10 exhibits the above-described function of allowing the fluctuation of the winding speed and the function of stabilizing the winding tension, the number of times of the yarn Y hanging on the slack removing roller 21 is reduced as much as possible. In this case, it is necessary to maintain a state in which the yarn Y is wound around the slack removing roller 21, that is, a state in which the slack amount is not lost, and to secure the state for a long time. At the time of normal winding, the winding speed is set to be slightly higher than the spinning speed. Therefore, if the rotation control of the package 16 is not performed, the yarn Y wound on the slack removing roller 21 may be removed. Eventually, all will be unwound. Therefore, in the present embodiment, the amount of slack is detected based on the yarn tension detected by the yarn tension detecting device 50 disposed immediately upstream of the slack removing roller 21, and if the shortage of the slack is detected, the winding of the package 16 is performed. The speed was reduced so that the slack could be recovered.
[0044]
When the amount of slack in the slack removing roller 21 is equal to or more than a predetermined amount and the yarn tension on the upstream side is larger than a predetermined value, as shown in FIG. The ON signal is continuously output to the unit controller 61 of the swing control mechanism 60 shown in FIG. When the amount of slack in the slack removing roller 21 decreases and the yarn tension falls below a predetermined value, the output of the ON signal from the switching member 54 stops. Then, the unit controller 61 outputs a control signal for separating the package to the controller 62, and the controller 62 outputs an operation signal to the solenoid valve device 63. As a result, the pressure air for separation is supplied to the air cylinder 64, and as shown in FIG. 9, the piston rod 65 of the air cylinder 64 expands, swings the cradle arm 14, and separates the package 16 from the rotary drum 13.
[0045]
The package 16 separated from the rotating drum 13 and given no rotational driving force reduces the rotation due to frictional resistance between the bobbin 15 and the cradle arm 14. As a result, as described above, the downstream winding speed (the unwinding speed of the yarn Y from the slack removing roller 21) of the yarn slack removing device 10 increases the speed of the yarn Y newly introduced into the slack removing roller 21 from the upstream side. The speed is lower than the spinning speed, and the amount of slack stored in the slack removing roller 21 increases due to the speed difference. After a lapse of time required for the slack amount stored in the slack removing roller 21 to recover to a predetermined amount, the solenoid valve device 63 is operated by an operation signal output from the controller 62 based on a control signal from the unit controller 61. The pressure air for separation is removed from the air cylinder 64. As a result, the piston rod 65 retreats, swings the cradle arm 14 in the return direction, brings the package 16 into contact with the rotating drum 13 again, and continues the yarn winding process at a normal winding speed.
[0046]
Since the package 16 has a different moment of inertia depending on the size of the winding diameter, the time required for the package 16 to be separated from the rotating drum 13 and then reduced to a predetermined speed to recover the slack amount stored in the slack removing roller 21 to the required amount. Are different. That is, when the winding diameter of the package 16 is large, the moment of inertia is large. Therefore, the time required to decelerate to a predetermined speed after separating from the rotating drum 13 is longer than when the winding diameter is small. Thus, in the present embodiment, the weight of the package 16 is determined by calculating the winding diameter of the package 16, and the length of time during which the package 16 is separated from the rotating drum 13 is controlled in accordance with the winding diameter. An adjusting means for adjusting the deceleration control amount of the motor is provided.
[0047]
As such an adjusting means, for example, a means comprising a winding length calculating section provided with a spinning speed storing section and a timer section, a thread type / counting storing section, a separation time calculating section, and the like provided in the unit controller 61 can be considered. Can be The winding diameter of the package 16 is determined by the yarn type / count and the winding length, and the winding length can be calculated from winding speed (or spinning speed) × winding time. The yarn type / count and winding speed are items that are set in advance according to spinning conditions. Therefore, the winding diameter of the package 16 can be calculated from the winding time measured by the timer unit, and the separation time required to reduce the rotation of the package 16 to a predetermined speed can be calculated from the winding diameter. Actually, the yarn type / count and winding (spinning) speed are predetermined values, and the winding time and the winding diameter of the package 16 are linked. If the speed data is input, it can be programmed so that the separation time calculation unit calculates the optimum separation time according to the winding diameter of the package 16 based on the winding time measured by the timer unit. That is, the package separation time can be adjusted only by the winding time.
[0048]
By the adjusting means described above, the spinning machine 1 of the present embodiment operates as follows. If the yarn tension detecting device 50 detects that the slack amount stored in the slack removing roller 21 during the yarn winding is smaller than a predetermined amount, the swing control mechanism 60 moves the package 16 from the rotary drum 13 for a predetermined time. Just pull apart. The adjusting means incorporated in the unit controller 61 calculates an optimum separation time according to the winding diameter of the package 16 from the spinning conditions and the winding time inputted in advance. After the elapse of the separation time, the package 16 comes into contact with the rotating drum 13 again. Since the moment of inertia is small when the winding diameter of the package 16 is small, the rotation of the package 16 is rapidly reduced when the package 16 is separated from the rotating drum 13, so that the slack amount is immediately recovered. Therefore, the package separation time may be short. Since the moment of inertia increases as the winding diameter increases, the degree of rotational deceleration of the package 16 when separated from the rotating drum 13 is small. Therefore, the separation time required for the slack amount to recover to the predetermined amount is set longer accordingly. If the separation time is not adjusted and the package separation time is set uniformly, the recovery amount of the slack amount gradually decreases as the winding diameter increases. Due to the rotation due to inertia, the yarn Y wound around the slack removing roller 21 may be completely unwound without recovering the slack amount. On the other hand, the present invention automatically adjusts the slack amount stored according to the package winding diameter, so that the amount of slack recovery is kept constant from the beginning to the end of the winding process, and the winding conditions are adjusted. It is possible to make the package uniform and thus contribute to the stabilization of the quality of the package 16.
[0049]
If the separation time of the package 16 is excessively long, the rotation of the package 16 will be stopped. At this time, the traverse guide 70 may be stopped on the downstream side of the yarn slack removing device 10 even though the yarn Y is stopped. Since the traverse guide 70 attempts to traverse the yarn Y, the traverse guide 70 may adversely affect the quality of the yarn Y or cause a yarn breakage. Further, when the package 16 in the stopped state is brought into rapid contact with the rotating drum 13, the yarn breakage due to a sudden change in the yarn tension may be induced. In order to avoid these problems, it is necessary to appropriately set the separation time of the package 16.
[0050]
Furthermore, since the package 16 is lightweight for a while after the winding of the yarn Y is started from the state of the empty bobbin, if the separating operation is performed in this state, the rotation of the package 16 is immediately stopped. Causes malfunction. Therefore, in order to prevent this, when the separating operation is performed for a while after the winding is started, the separating and contacting are repeated at short time intervals to prevent the rotation of the package 16 from being stopped, and to remove the slack. It is desirable to gradually recover the slack amount stored in the roller 21.
[0051]
[Second embodiment]
In the spinning machine 1, the winding speed of the package 16 is reduced according to a preset predetermined deceleration schedule to increase the slack amount, regardless of the slack amount stored in the slack removing roller 21 of the yarn slack removing device 10. It is also possible to adopt an embodiment. For example, a process of swinging the cradle arm 14 to separate the package 16 from the rotating drum 13 for a predetermined time and then swinging the cradle arm 14 in the return direction to bring the package 16 into contact with the rotating drum 13 periodically is performed. It is conceivable that the recovery of the slack amount stored in the slack removing roller 21 is performed at a constant cycle. With this configuration, even if the amount of slack stored in the slack removing roller 21 during operation of the spinning machine may be reduced, if the slack amount is always recovered within a certain time, the yarn winding can be performed. The tension adjustment during the process can be reliably continued without interruption. The schedule for reducing the winding speed may be appropriately set based on the spinning conditions.
[0052]
In this embodiment, it is possible to omit the yarn tension detecting device 50 arranged on the upstream side of the slack removing roller 21. Also in the present embodiment, if the winding diameter of the package 16 is increased, the deceleration time required for the slack amount to recover by a predetermined amount is the same. Accordingly, it is desirable to provide an adjusting means for extending the deceleration processing time per one deceleration step of the package 16.
[0053]
[Third Embodiment]
When the yarn Y is wound up while being traversed along the axial direction of the bobbin 15 by the traverse device having the reciprocating traverse guide 70, the package 16 is formed as shown in FIGS. 13A to 13C. Is decelerated at a constant distance δ from the rotating drum 13, and at the same time, the yarn Y is also separated from the traverse guide 70 of the traverse device as long as the yarn Y does not separate from the engagement with the traverse guide 70. This is an excellent effect that both the ribbon winding and the ear height can be solved. The reason why the present embodiment can solve the problem of the ribbon winding and the ear height is as follows.
[0054]
The ribbon winding is a phenomenon that occurs when the yarn Y is wound around the same portion of the package 16 several times when the yarn Y is wound up while being traversed along the axial direction of the bobbin 15 to form the package 16. On the other hand, as for the ear height, the traverse speed must be lower than that at the center part by accelerating and decelerating at the turn positions at the left and right ends of the package, so that the winding amount of the yarn Y becomes larger than that at the center part. This is a phenomenon caused by: As shown in FIG. 14A, the yarn Y is engaged with the traverse guide 70 of the traverse device and traverses a predetermined range, so that the yarn Y is wound around the package 16 in a posture inclined at a certain angle. The size of the inclination angle, that is, the size of the traverse angle is determined by the traverse speed of the traverse guide 70 and the winding speed (the peripheral speed of the package 16). When the traverse speed of the traverse guide 70 is v1 and the winding speed before deceleration is v2, the twill angle of the yarn Y is θ1. If the winding speed is reduced to v3 by separating the package 16 from the rotary drum 13, the traverse speed v1 of the traverse guide 70 located at the same position is considered not to change in principle. Is larger than the above-mentioned helix angle θ1 by the amount by which the winding speed is reduced to v3. In addition, as a result of the rotation of the package 16 being decelerated, the yarn Y is slackened and the yarn tension is reduced, which is also considered to be a factor for changing the twill angle. With such a mechanism, the traversing angle of the yarn Y can be changed without being wound around substantially the same location, so that the occurrence of ribbon winding is suppressed.
[0055]
By the way, when the traverse guide 70 of the traverse device reverses the moving direction at both ends of the traverse range, the winding direction of the yarn Y on the package 16 turns. As shown by a two-dot chain line in FIG. 14B, it is assumed that the turn position of the yarn Y before the winding speed is reduced according to the rotation deceleration of the package 16 is T1 at the end of the package 16. As shown by a solid line in FIG. 3, when the package 16 is separated from the rotating drum 13 and at the same time is separated from the traverse guide 70 within a range where the yarn Y does not disengage from engagement with the traverse guide 70, Since the yarn path length is changed by increasing the distance to the package 16, the turn position of the yarn Y is displaced toward the center (T2) of the package 16 by itself. At the same time, the winding speed of the yarn Y is reduced as the rotation of the package 16 is reduced, so that the traversing angle of the yarn Y is increased, so that the actual turn position is displaced to a more central position T3. As described above, the present embodiment prevents the locally increased winding amount of the yarn Y at both ends of the package 16 by periodically displacing the turn position of the yarn Y. It is possible to avoid.
[0056]
In carrying out this embodiment, it is desirable that the step of separating the package 16 from the rotating drum 13 is periodically executed according to a predetermined schedule. The separation distance δ between the package 16 and the rotating drum 13 is set within a range where the yarn Y does not separate from the engagement with the traverse guide 70. Further, it is desirable that the separation operation of the package 16 is controlled so that the separation distance δ becomes a constant value in principle even when the winding diameter of the package 16 changes.
[0057]
[Fourth embodiment]
Each of the above-described embodiments aims at recovering the slack amount before the slack amount stored in the slack removing roller 21 of the yarn slack removing device 10 disappears. However, even when the slack amount is completely eliminated, the spinning is performed. Depending on the conditions, if the slack removal can be resumed within a predetermined short time, there may be no problem in the quality of the package. Therefore, an unwinding detection sensor for detecting that the yarn Y has been completely unwound from the slack removing roller 21 is provided, and the deceleration process of the package 16 is performed after a lapse of a predetermined time from the unwinding of the yarn Y. Thus, it is conceivable that the slack amount stored in the slack removing roller 21 is restored to a predetermined amount.
[0058]
In this case, the above-described yarn tension detecting device 50 only detects whether the slack amount is equal to or more than the predetermined amount using the switching member 54, and unwinds the yarn Y wound around the slack removing roller 21. It does not function as a sensor that detects when has been completed. Therefore, for example, a touch sensor, a photoelectric switch, a micro switch, and the like are separately provided to detect that the yarn path of the yarn Y is displaced to the yarn path (see FIG. 6) when the yarn Y is completely unwound from the slack removing roller 21. This can be considered as an unwinding completion detection sensor.
[0059]
In the present embodiment, in the spinning process by the spinning machine 1, when the yarn Y is completely unwound from the slack removing roller 21 for some reason, the unwinding completion detection sensor detects this and unwinds it to the unit controller 61. Outputs a shunt detection signal. In response to this, the unit controller 61 starts counting time by the timer, and when a predetermined time has elapsed, outputs a control signal to the controller 62 to separate the package 16 from the rotating drum 13 and reduce the rotational speed of the package 16. Slow down. Then, after a lapse of time required for the slack amount to recover to the predetermined amount, the package 16 is brought into contact with the rotating drum 13 again, and the normal winding process is continued. As in the above embodiments, the package separation time is adjusted according to the winding diameter of the package 16.
[0060]
In the spinning machine 1 according to the present embodiment, as shown in FIG. 6, the yarn path when completely unwound from the slack eliminating roller 21 is a fryer of the unwinding tension applying member 22 provided in the yarn slack eliminating device 10. It is set so as to intersect with the rotation track surface 22a. Therefore, when the package 16 is decelerated to cause slack in the yarn Y, the flyer 22 a immediately engages with the yarn Y, and the yarn Y can be wound around the slack removing roller 21.
[0061]
[Other embodiments]
(About deceleration control means)
The control means for reducing the rotational speed of the package 16 includes a support shaft of the bobbin 15 or the cradle arm 14 in addition to the means for separating the package 16 from the rotating drum 13 by the swing of the cradle arm 14 and naturally reducing the speed. It is also conceivable to provide a braking means for applying a braking force to the bobbin support portion, forcibly decelerate the package 16 with the braking means, and adjust the magnitude of the braking force as a deceleration control amount. In this case, since the moment of inertia varies depending on the winding diameter of the package 16, the braking force may be changed according to the winding diameter of the package 16. Also, a constant braking force may be applied, but the package deceleration amount at this time differs. Therefore, adjusting means for adjusting the length of time for applying the braking force in accordance with the winding diameter of the package 16 is still required.
[0062]
In addition, when a motor for driving the rotation of the rotary drum 13 is provided for each spinning unit 2, the operation of this motor can be controlled to perform the deceleration processing of the package 16. However, in these alternative embodiments, it is necessary to separately provide a motor / control unit for each unit 2 and calculate the acceleration / deceleration pattern of the motor. On the other hand, in the case of adjusting the separation time of the package 16 from the rotating drum 13, it is only necessary to control the contact and separation between the rotating drum 13 and the package 16, so that a simple control form is realized, and thus the cost can be reduced. The advantage that it can be achieved is obtained.
[0063]
(About winding diameter detection means)
As means for detecting the winding diameter of the package, in addition to means for calculating from the winding time, the rotation speed of the bobbin 15 supporting the package 16 is measured, and the winding diameter of the package 16 is determined from the rotation speed. It is possible to calculate. Normally, the rotation speed of the bobbin 15 is controlled so that the yarn winding speed, that is, the peripheral speed of the package 16 is constant. Therefore, as the winding diameter of the package 16 increases, the rotation speed of the bobbin 15 gradually decreases. It becomes. Accordingly, since the bobbin rotation speed and the package winding diameter are closely correlated, it is possible to calculate the winding diameter of the package 16 based on the rotation speed of the bobbin 15.
[0064]
(Other embodiments)
The present invention exerts a great effect when applied to the production of a cone-wound package. However, in the production of a cheese-wound package, the yarn Y is wound around the slack removing roller 21 in order to suppress the fluctuation of the winding tension. It is also possible to apply to.
[0065]
【The invention's effect】
According to the spinning machine according to the present invention as set forth in claim 1, a yarn slack removing device for absorbing a change in winding tension between the spinning device and the winding device is provided. Means, a winding diameter detecting means for the package, and an adjusting means for adjusting the deceleration control amount of the deceleration control means according to the winding diameter of the package, so that the slack amount stored in the slack removing roller of the yarn slack removing device is provided. Not only can be reliably prevented from disappearing, but also the deceleration control amount of the winding speed can be adjusted according to the package winding diameter, so that the amount of increase when recovering the slack amount can be set to an appropriate amount without excess or shortage It is. As a result, the operation of adjusting the winding tension by the yarn slack removing device is made uniform, so that a good package having a uniform winding state can be easily obtained. In particular, the present invention exerts a remarkable effect on stabilizing the winding tension when applied to the manufacture of a cone-wound package in which the winding speed tends to fluctuate because the winding diameter changes within one traverse.
[0066]
According to the spinning machine according to the second aspect of the present invention, the deceleration control unit is set to output a deceleration control signal for the winding speed based on the amount of thread winding on the slack removing roller detected by the winding amount detection unit. If the slack amount is smaller than a predetermined amount, the winding speed of the winding device is reduced to reliably increase the slack amount stored in the slack removing roller of the yarn slack removing device. It is possible to prevent the loosened yarn from being lost.
[0067]
According to the spinning machine of the present invention, the slack amount stored in the slack eliminating roller of the yarn slack eliminating device based on the yarn tension detected by the yarn tension detecting means provided immediately upstream of the slack eliminating roller. The slack amount can be monitored by the inexpensive and simple detecting means, and the non-contact type sensor such as the pulse counter or the yarn on the roller may be adversely affected by the calculation. There is no need for a contact-type sensor that may be involved.
[0068]
According to the spinning machine of the present invention, the deceleration control means of the winding device is constituted by a mechanism for separating the package from the rotary drum, and the adjusting means is constituted by a mechanism for adjusting the separation time of the package. In addition, it is possible to perform appropriate deceleration processing of the package with a simple control mode, so that cost can be reduced.
[0069]
According to the spinning machine according to the fifth aspect of the present invention, when the traverse device has a traverse guide, the deceleration control means is controlled by a mechanism for separating the package from the rotary drum within a range where the wound yarn does not separate from the traverse guide. Therefore, the traversing operation of the yarn during the winding speed reduction operation can be reliably performed.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a spinning machine according to the present invention.
FIG. 2 is a front sectional view schematically showing a main structure of the spinning machine according to the embodiment.
FIG. 3 is a side view showing a schematic configuration of a spinning unit and a work vehicle of the spinning machine according to the embodiment.
FIG. 4 relates to the spinning machine according to the embodiment, and is a side view showing a schematic configuration of a yarn slack removing device at the time of yarn hooking.
FIG. 5 relates to the spinning machine according to the embodiment, and is a front view showing a schematic configuration of a yarn slack removing device at the time of yarn hooking.
FIG. 6 relates to the spinning machine according to the embodiment, and is a side view showing a schematic configuration of a yarn slack removing device at the start of slack removal.
FIG. 7 relates to the spinning machine according to the embodiment, and is a side view showing a schematic configuration of a yarn slack removing device during a slack removing operation.
FIG. 8 relates to the spinning machine according to the embodiment, and is a front view showing a schematic configuration of a yarn slack removing device during a slack removing operation.
FIG. 9 is a side view showing a schematic configuration of a spinning unit and a work vehicle of the spinning machine according to the embodiment, in a state where a winding speed reduction process is being performed.
FIG. 10 is a perspective view showing a slack removing roller used in the yarn slack removing device according to the embodiment, as viewed from a front end side.
11A and 11B show a slack removing roller and a yarn tension detecting device used in the yarn slack removing device according to the embodiment, wherein FIG. 11A is a front view seen from the front end side, and FIG. FIG.
FIG. 12 is a side sectional view showing a slack removing roller and a yarn tension detecting device used in the slack removing device according to the embodiment.
13A and 13B show the rotary drum and the package according to the embodiment, wherein FIG. 13A is a side view showing a state where the rotary drum and the package are in contact with each other, and FIG. Is a side view showing a state where the package is separated from the rotary drum, and FIG. (C) is an enlarged side view showing a main part where the package is separated from the rotary drum.
FIG. 14 is a front view of a main part showing a traverse guide and a package according to the embodiment, wherein FIG. 14A is for explaining the reason why ribbon winding can be avoided, and FIG. This is for explaining the reason why this can be prevented.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Spinning machine 2 ... Spinning unit 3 ... Work cart 5 ... Spinning device 10 ... Thread slack removal device 12 ... Winding device 13 ... Rotary drum 14 ... Cradle arm 15 ... Bobbin 16 ... Package 17 ... Thread joining device 21 ... Slack removal Roller 22 ... Unwinding tension applying member 22a ... Flyer 23 ... Upstream side guide 24 ... Advance / retreat means 35 ... Driving motor 50 ... Thread tension detecting device 51 ... Wire rod 54 ... Switching member 60 ... Swing control mechanism 61 ... Unit controller 70 … Traverse guide S… fiber bundle (sliver) Y… yarn (spun yarn)

Claims (5)

A spinning device that generates and spins a yarn from a fiber bundle; a winding device that winds the spun yarn into a package; and a winding device that winds the yarn between the spinning device and the winding device to reduce fluctuations in winding tension. In a spinning machine including a yarn slack removing device having a slack removing roller for absorbing, a deceleration control means for controlling a winding speed to be lower than a spinning speed; a winding diameter detecting means for the package; A spinning machine provided with adjusting means for adjusting a deceleration control amount of the deceleration control means according to a diameter. A winding amount detecting means for detecting a winding amount of the yarn in the slack removing roller is provided, and based on the winding amount detected by the detecting means, the speed reduction control means is set to output a speed reduction control signal of the winding speed. The spinning machine according to claim 1. The winding amount detecting means is provided immediately upstream of the slack removing roller, and comprises a yarn tension detecting means for detecting a yarn tension immediately before being wound by the slack removing roller, based on the yarn tension detected by the yarn tension detecting means. The spinning machine according to claim 2, wherein a slack amount stored in the slack removing roller is calculated. The winding device includes a rotating drum that rotates while being in contact with the package and rotationally drives the package, the deceleration control unit includes a mechanism that separates the package from the rotating drum, and the adjusting unit includes a winding diameter of the package. 4. The spinning machine according to claim 1, further comprising a mechanism for adjusting a separation time of the package as a deceleration control amount of the deceleration control means. The said winding device is provided with the traverse device which has a traverse guide, The said deceleration control means consists of a mechanism which isolate | separates a package from a rotating drum within the range which the thread to be wound does not separate from a traverse guide. Spinning machine.

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