JP2003002535A - Yarn winder and operating method for it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a yarn speed during winding and a feeding speed of an elastic yarn at a set value in spite of increase in winding thickness and to smoothly recover a transmission after winding when a winding spindle and an elastic yarn feeding roller are driven by means of a single main motor. SOLUTION: This yarn winder provided with the single speed variable main motor 4 driving the elastic yarn feeding roller 7 and the winding spindle 8 and the transmission 43 arranged in the middle of a transmission mechanism 40 transmitting driving force by the main motor 41 to the elastic yarn feeding roller 7. The transmission 43 is constructed of a continuously variable transmission varying a change gear ratio by means of a shift operation apparatus 55, and a clutch 49 capable of shutting off transmission of the driving force from the continuously variable transmission 43 to the elastic yarn feeding roller 7 is arranged between the continuously variable transmission 43 and the elastic yarn feeding roller 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding device capable of applying an elastic yarn and an improvement in a method of operating this device.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 10-2 discloses a yarn winding device.
There is one described in Japanese Patent No. 65125. This yarn winding device winds a synthetic spindle or a cotton yarn together with an elastic yarn such as polyurethane to wind it, a winding spindle, an elastic yarn feeding roller for feeding the elastic yarn at a set speed, and a winding yarn. One main motor that drives the spinning spindle and the elastic yarn feeding roller, and a transmission provided in the middle of a transmission mechanism that transmits the driving force of the main motor to the elastic yarn feeding roller. It uses a type in which the belt can be rewound around the step pulley. This transmission is for changing the expansion / contraction rate of the elastic yarn by changing the speed of the elastic yarn feeding roller.

By the way, in the operation of the yarn winding device, the output speed of the main motor is gradually reduced from the initial state in accordance with the thickening of the yarn during the winding operation, and the yarn speed during winding is set to a set value. There is a way to keep it. Also at this time, in order to keep the expansion and contraction rate of the elastic yarn constant, it is necessary to keep the rotation speed of the elastic yarn feeding roller constant.

[0004]

However, in the yarn winding device, since the winding spindle and the elastic yarn feeding roller are driven by one main motor, the elastic yarn is decelerated as the main motor decelerates. The feeding roller is also decelerated, the rotation speed of the elastic yarn feeding roller cannot be kept constant, and the above operating method cannot be performed. Therefore, it is conceivable to try to keep the rotational speed of the elastic yarn feeding roller constant in the step pulley type transmission, but the belt for the step pulley of the transmission is not stopped without stopping the yarn winding operation. It is not possible to change the number of turns, and since the speed is changed stepwise by the step pulley, it is not possible to cope with the continuous thickening of winding.

Therefore, according to the present invention, when the winding spindle and the elastic yarn feeding roller are driven by one main motor, the yarn speed during winding and the feeding of the elastic yarn are increased even if the winding thickening progresses. (EN) Provided are a yarn winding device and a method of operating this device, which can maintain a speed at a set value and can smoothly return a transmission after winding.

[0006]

According to a first aspect of the present invention, there is provided a variable speed type main motor for driving an elastic yarn feeding roller and a winding spindle, and a drive for the main motor. A yarn winding device including a transmission provided in the middle of a transmission mechanism for transmitting a force to an elastic yarn feeding roller, wherein the transmission is a continuously variable transmission in which a gear ratio is varied by a gear shift operation tool. A clutch that can cut off the transmission of the driving force from the continuously variable transmission to the elastic yarn feeding roller is provided between the continuously variable transmission and the elastic yarn feeding roller in the transmission path of the transmission mechanism. Is. In the present invention, as the winding thickness of the yarn progresses due to the winding operation, the output speed of the main motor is gradually reduced from the initial state while maintaining the yarn speed during winding at the set value, In response to the deceleration of the main motor, the output of the continuously variable transmission can be gradually increased from the initial state by the speed change operation tool while the feeding speed of the elastic yarn feeding roller can be maintained at the set value. When the continuously variable transmission is rotated by the main motor and the gear ratio is returned to the initial state by the gear shift operation tool after the completion of the removal, the clutch can be disengaged to prevent the elastic yarn feeding roller from rotating. .

The means adopted by the present invention according to claim 2 is as follows:
2. The yarn winding device according to claim 1, wherein the clutch transmits the driving force when the main motor normally rotates in the winding direction, and interrupts the transmission of the driving force when the main motor rotates in the reverse direction. It is a directional clutch. According to the present invention, when the continuously variable transmission is returned to the initial state after the winding is completed, the clutch is automatically brought into the disengaged state when the main motor is rotated in the reverse direction. Therefore, special control for the clutch is performed. Therefore, the feeding of the elastic yarn feeding roller can be reliably prevented.

The means adopted by the present invention according to claim 3 is as follows.
A method of operating a yarn winding device in which a single variable-speed main motor drives a winding spindle and also drives an elastic yarn feeding roller via a continuously variable transmission. In the middle, the output rotation of the main motor is decelerated from the initial state as the yarn becomes thicker, the yarn speed during winding is maintained at the set value, and there is no space between the main motor and the elastic yarn feeding roller. The elastic yarn feeding speed is maintained at the set value while increasing the gear ratio of the continuously variable transmission from the initial state, and the driving force is transmitted from the continuously variable transmission to the elastic yarn feeding roller during the returning operation after winding. In the cutoff state, the continuously variable transmission is driven by the main motor and the gear ratio is returned to the initial state. According to the present invention, the yarn speed during winding and the feeding speed of the elastic yarn are maintained at the set values as the winding thickness of the yarn progresses due to the winding operation. When the gear ratio of the step transmission is returned to the initial state, the elastic yarn feeding roller is prevented from rotating.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a yarn winding device according to the present invention will be described based on an embodiment shown in a right side view of FIG. 1, a perspective view of FIG. 2 and a front view of a drive system in FIG. . The yarn winding device 1 is provided with a plurality of weights 1a, 1a ... Divided in the left-right direction (direction of arrow A shown in FIG. 3). Each weight 1a
Is a pan that is a take-up and take-up package while traversing in a state of a yarn Y1 formed by combining two sets of yarn feeders 2 and 3 and yarns Y2 and Y3 fed from the yarn feeders 2 and 3, respectively. The winding mechanism 5 for obtaining P1 and the transmission mechanism 40 for transmitting the driving force to the winding mechanism 5 and the yarn feeding device 2 are provided.

The winding mechanism 5 comprises a standing winding spindle 8 and upper and lower traversers 9, 9. The spindle 8 is attached to the horizontal frame 14 that forms a part of the machine base 13,
It is rotatably supported by bearings (not shown),
A shaft having a proper length is used, and the shaft is adapted to rotate on a tangential belt 12 extending in the juxtaposed direction of the weights (left-right direction) and rotate at a predetermined speed. On the spindle 8, bobbins (not shown) are inserted in upper and lower stages, and a holder (not shown) prevents the bobbins from sliding in the rotation direction.
Each traverser 9 is provided with a thread guide 10 formed from a material such as metal or ceramic on the tip side, and the thread guide surface of the thread guide 10 is finished to a rough surface such as a matte surface. The rough surface is used to improve the sliding of the guided elastic yarn Y1 and prevent the combined yarn Y1 from being wound separately. The upper and lower traversers 9, 9 reciprocally move in the vertical direction which is the axial direction of the spindle 8 so that the width of the reciprocating motion is gradually narrowed, and the pan P1 is wound around each bobbin. .

The yarn feeding device 2 is provided with a beg 2a and the like so that a yarn feeding package P2 of synthetic fiber yarn or cotton yarn Y2 can be mounted. The yarn supplying device 3 is arranged at a position of the machine base 13 below the winding spindle 8 so that the package P3 of the elastic yarn Y3 can be mounted.
The yarn feeding device 3 includes a vertically movable cradle arm 6 that supports the yarn feeding package P3 in a horizontal state, and a roller 7 that feeds the elastic yarn Y3 by frictionally contacting the yarn feeding package P3. The elastic yarn feeding roller 7 has a pulley 16 attached to the shaft end thereof, and a drive shaft 15 which is supported by extending in the left-right direction.
A belt 17 is wound around the pulley 16 and the pulley 16 to be driven.

The transmission mechanism 40 transmits the rotation output of the variable speed main motor 41 to the winding mechanism 5 and the yarn feeding device 3, and the rotation output of the main motor 41 is applied to the tangential shear belt 12. Continuously variable transmission 43, gearbox 45,
A transmission path for sequentially transmitting to the belt 47 and the drive shaft 15 is formed so that the drive force is transmitted from the tangential belt 12 to the winding mechanism 5 and the drive force is transmitted from the drive shaft 15 to the yarn feeder 3. I am doing it. The transmission mechanism 40 is provided with a clutch 49 in the middle of the drive shaft 15 so that the drive force from the drive shaft 15 to the yarn feeder 3 can be shut off. The tangential belt 12 is connected to the output shaft 4 of the main motor 41.
The spindle 8 of the winding mechanism 5 which is stretched between the pulley 42 attached to the la 1a and the pulley 44 attached to the input shaft 43a of the continuously variable transmission 43, and which is rollingly contacted, is rotated at a predetermined speed. is there. In the transmission mechanism 40, the structure for transmitting the drive of the main motor 41 to the yarn feeding device 3 is arranged at the end (out-end side) of the machine stand opposite to the main motor 41.

The main motor 41 is capable of continuously changing the rotation output, and an inverter type variable speed motor or the like is selected, and the awn P formed by the winding mechanism 5 is formed.
The motor control circuit is configured to maintain the speed of the yarn Y1 being wound at the set value while decelerating the output rotation speed from the initial state in accordance with the increase in the winding weight of No. 1. Main motor 41
Is a clutch 4 provided in the middle of the transmission path of the transmission mechanism 40.
When a one-way clutch, which will be described later, is selected in 9, it is possible to perform forward rotation and reverse rotation when forming the pan P1.

The continuously variable transmission 43 comprises an input side pulley (control wheel) 51 and an output side pulley (control wheel) 52 in which two discs having conical contact surfaces are arranged so as to be able to come into contact with and separate from each other.
A belt 53 wound around the two pulleys 51, 52, a biasing member 54 for biasing the two disks of the input side pulley 51 toward each other, and an interval between the two disks of the output side pulley 52 are adjusted. A gear shift operation tool 55 is provided, and the gear ratio can be continuously varied by adjusting the output side pulley 52 with the gear shift operation tool 55. The speed change operation tool 55 includes a servo motor for moving both disks, and a servo motor control circuit is configured so that the speed ratio of the continuously variable transmission 43 is inversely proportional to the speed ratio of the variable speed main motor 41. . That is,
Pane P formed by the winding mechanism 5 during the winding operation
In order to maintain the speed of the yarn Y1 being wound at the set value while decelerating the output rotation of the main motor 41 from the initial state with the increase in the winding number of 1, the gear ratio of the continuously variable transmission 43 is increased from the initial state. Meanwhile, the feeding speed of the elastic yarn Y3 is maintained at the set value.

In order to shift to the operation of winding up to the next empty bobbin when the pan P1 wound up by the winding mechanism 5 becomes full, the continuously variable transmission in the speed increasing state (the state where the gear ratio is large) It is necessary to return the gear ratio of the machine 43 to the original state (the state where the gear ratio is small). Therefore, the transmission mechanism 40
When the reset switch of the operation panel (not shown) is turned on, the clutch 49 is disengaged to stop the feeding of the elastic yarn feeding roller 7, and the continuously variable transmission 43 is rotated at a low speed by the main motor 41. Meanwhile, the output side is gradually decelerated by the speed change operation tool 55 to return to the initial speed ratio. When the reset switch is turned on, the traverser 9 is returned to the origin position. The operation panel including the reset switch is arranged at the end of the machine base on the same side as the main motor 41 (driving side).

A clutch 49 provided on the transmission mechanism 40
Can be an electromagnetic clutch or a one-way clutch. When the electromagnetic clutch is selected, during the winding by the winding mechanism 5, the clutch connection state is maintained and the elastic yarn feeding roller 7 is fed, and after the winding is completed, the continuously variable transmission 43 is set to the initial state. The clutch control circuit is configured to maintain the disengaged state during the restoration. Further, when the one-way clutch is selected, when the main motor 41 rotates in the normal direction in the winding direction, the driving force can be transmitted, and when the main motor 41 rotates in the reverse direction, the driving force is not transmitted. Is selected. When the electromagnetic clutch is selected, the reverse rotation of the main motor 41 is not required even for the return operation of the continuously variable transmission 43, but the electromagnetic clutch needs to be controlled in the disengaged state based on the input of the reset switch. Requires electrical wiring from to clutch. On the contrary, when the one-way clutch is selected, the electric wiring from the reset switch to the clutch is unnecessary, but the reverse operation of the main motor 41 is required in the returning operation of the continuously variable transmission 43.

The machine base 13 has upper and lower two-stage support bases 18 and 19 extending in the left-right direction in a state of being protruded toward the front and joined. A balloon guide 21 for the yarn Y2, a tensor 22 and a filler (thread breaker) provided as needed in a downward upper position on the lower support base 19 at a position above the yarn feeder 2 in that order. A detection sensor 23 and a guide roller 24 are attached. The upper support 18 includes a filler (thread breakage detection sensor) 25 for the yarn Y2 and an elastic yarn Y.
Filler for 3 (thread breakage detection sensor) 26, thread Y2, Y
The thread guide 27 for aligning 3 and the thread guide 28 for the thread Y1 which is entangled and aligned are attached, and the thread guides 27, 2
The entanglement device 30 and the cutter 29 arranged between 8 are attached. The filler 26 and the yarn guides 27, 28 through which the elastic yarn Y3 passes have each yarn guide surface finished to a rough surface such as a satin-finished surface, etc., to improve sliding with respect to the elastic yarn Y3 to be guided. When the filler (thread breakage detection sensor) 23 for the yarn Y2 is provided, the filler 25 is changed to the yarn guide 25.

The entanglement tool 30 jets air from the nozzle toward the combined yarns Y2 and Y3 passing through the yarn path, and positively entangles the two yarns Y2 and Y3 to form one yarn Y1.
It is what One entangled yarn Y1 is the two yarns Y
2 and Y3 are appropriately entangled with each other, and are wound around the pan P1 without being separated by the yarn guide 10 of the traverser 9. The parn P1 is maintained in an entangled state even in the unwinding of the next process (double twisting process or the like), and does not cause a problem that the yarn P2 is separated into the two yarns Y2 and Y3 and broken.

Next, the operation of each weight 1a of the yarn winding device 1 will be described. In order to wind the yarn supply Y2 made of synthetic fiber or cotton yarn together with the elastic yarn Y3, upper and lower bobbins (not shown) for forming the pan P1 are held by the spindle 8 of the winding mechanism 5 and the yarn supply is performed. The yarn feeding packages P2 and P3 are attached to the devices 2 and 3. Next, the yarn feeding Y2 is passed from the lower balloon guide 21 to the upper guide roll 24 and the filler 25, and the elastic yarn Y3 is passed through the filler 2.
6 thread, align both yarns Y2 and Y3 with the yarn guide 27,
Further, threading is performed on one bobbin through the interlacing tool 30, the cutter 29, and the thread guide 28. Subsequently, the main motor 41 is activated to rotate the spindle 8 of the winding device 5 and the elastic yarn feeding roller 7 of the yarn supplying device 4, and the elastic yarn Y3 is supplied by swinging the cradle arm 6. When the package P3 is brought into pressure contact with the feeding roller 7, the friction drive causes the package P3 to be forcedly rotated. Thus, the yarns Y2 and Y3 from the respective yarn feeding packages P2 and P3 are wound on the bobbin while being pulled. During the winding operation, the yarn Y1
The output rotation of the main motor 41 is decelerated from the initial state in accordance with the increase in the winding weight of the yarn while maintaining the speed of the yarn Y1 being wound at the set value, and is provided between the main motor 41 and the elastic yarn feeding roller 7. The elastic yarn feeding speed is maintained at the set value while increasing the gear ratio of the continuously variable transmission 43 from the initial state.

At this time, the yarn Y2 of the yarn feeding package P2
Is unwound at a speed substantially corresponding to the rotation speed of the spindle 8 and wound while being appropriately tensioned by the tenser 22. Since the feeding speed of the elastic yarn Y3 regulated by the peripheral velocity of the feeding roller 7 is slower than the yarn speed regulated by the peripheral velocity of the pan P1, the elastic yarn Y3 is stretched at an appropriate expansion / contraction rate (drawing ratio). In this state, the yarn is combined with another yarn supply Y2 and wound. The expansion / contraction rate of the elastic yarn Y3 is maintained constant during winding. When the expansion / contraction ratio of the elastic yarn Y3 is changed according to the type of the elastic yarn Y3 and the specification of the combined yarn Y1, the gear ratio in the initial state of the continuously variable transmission 43 is changed.

When the pan P1 wound by the winding mechanism 5 becomes full, the yarn Y1 in the combined yarn state is cut by the cutter 29 and the main motor 41 is stopped. At this time, both threads Y2
Y3 is held at the position of the interlacing device 30 while being entwined.
While removing the full pan P1 from the spindle 8,
After mounting the empty bobbin on the spindle 8, the reset switch is operated to restore the gear ratio of the continuously variable transmission 43 in the speed increasing state to the original state. At the time of this return, while maintaining the clutch 49 in the disengaged state, the continuously variable transmission 43 is connected to the main motor 41.
The gear ratio is returned to the initial gear ratio by the gear shift operation device 55 while rotating at low speed. During such a returning operation of the continuously variable transmission 43, the rotation of the elastic yarn feeding roller 7 is stopped and the elastic yarn Y3 is not fed or rewound (both yarns Y2 and Y3). Entangling tool 30 with the thread ends entangled
Therefore, it is possible to quickly thread the new empty bobbin without losing the thread end of the elastic thread Y3.

As described above, after the yarn end of the yarn Y1 cut at the cutter 29 and located at the exit of the interlacing device 30 is picked up and threaded on a new empty bobbin, the clutch 4
9 is brought into the joining state (when the one-way clutch is used, the joining state is automatically established by driving the main motor 41 in the forward rotation direction), and the main motor 41 is started to start the winding operation.

Each weight 1a of the yarn winding device 1 is provided with a yarn feeding device 2 and a balloon guide 20 to a guide roll 24.
Two or more sets of are arranged, and two or more synthetic fiber threads or cotton threads Y
It is also possible that the yarns Y2 and Y2 and the elastic yarn Y3 are combined and wound around the pan P1.

In the present embodiment, the elastic yarn package P3
A cutter 29 that cuts the running yarn in the yarn path between the yarn feeding device 3 including the winding device and the winding mechanism 5 including the winding spindle 8.
And a holding means (entanglement tool 30) for holding the cut yarn end (the yarn end connected to the yarn supplying side) which is upstream of the cutter 29, and is an elastic yarn. Since it is possible to drive the continuously variable transmission 43 that returns without rotating the feeding roller 7, the return operation of the continuously variable transmission 43 can be performed while preventing the feeding of the elastic yarn Y3 from the elastic yarn package P3. That is, during the return operation of the continuously variable transmission 43, the elastic yarn Y3 whose end portion is held by the holding means (entanglement device 30) is not fed out or rewound. As a result, since the yarn end of the elastic yarn Y3 can be maintained as it is when it is cut (while being retained by the retaining means), the yarn can be easily hooked on a new empty bobbin mounted on the winding spindle 8. it can.

The yarn winding device according to the present embodiment is provided with at least one different yarn supplying device 2 in addition to the yarn supplying device 3 including the elastic yarn package P3. After unifying the yarn unwound from No. 3 and Y2 and Y3, the yarn is wound as one winding body (pan P1) in the winding mechanism 5, and a cutter 29 that cuts the yarn when full.
And holding means for holding the cut yarn (entanglement tool 30)
Is at a position after the plurality of yarns Y2 and Y3 have been combined.
That is, the cutter 29 is provided with a plurality of yarns Y which are in a combined state.
2 and Y3 are cut at the same time, and the holding means holds the plurality of combined yarns Y2 and Y3 at the same time.
It is not necessary to separately provide the cutter 29 and the holding means for 2 and Y3.

[0026]

As described above in detail, according to the present invention, when the winding spindle and the elastic yarn feeding roller are driven by a single main motor, even if the yarn is thickened, the winding is performed. Since the yarn speed and the elastic yarn feeding speed can be maintained at the set values for smooth winding, and the elastic variable yarn feeding roller can be smoothly returned to the initial state with the roller stopped. The operability of the yarn winding device can be improved. In the present invention in which the clutch is a one-way clutch, electric wiring for the clutch is not required, the structure of the yarn winding device can be simplified, and a reliable joining / disengaging operation for the clutch can be secured.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a side view of a yarn winding device.

FIG. 2 is a perspective view of the same embodiment.

FIG. 3 is a front view showing a drive system in the same embodiment with intermediate portions omitted.

[Explanation of symbols]

2, 3 ... Yarn supply device, 5 ... Winding mechanism, 7 ... Elastic yarn feeding roller, 8 ... Spindle, 9 ... Traverse guide, 15 ...
Drive shaft, 40 ... Transmission mechanism, 41 ... Main motor, 43 ... Transmission mechanism, 49 ... Clutch, Y1, Y2, Y3 ... Thread, P1 ...
Pan

Claims (3)

[Claims] 1. A variable speed main motor for driving an elastic yarn feeding roller and a winding spindle, and a transmission mechanism for transmitting a driving force of the main motor to the elastic yarn feeding roller. In a yarn winding device including a transmission, the transmission is configured by a continuously variable transmission that changes a gear ratio with a gear shift operation tool, and the continuously variable transmission and the elastic member in a transmission path of the transmission mechanism. A yarn winding device characterized in that a clutch capable of interrupting transmission of a driving force from a continuously variable transmission to an elastic yarn feeding roller is provided between the yarn feeding roller and the yarn feeding roller. 2. The one-way clutch, wherein the clutch transmits a driving force when the main motor normally rotates in a winding direction, and cuts off the transmission of the driving force when the main motor rotates in a reverse direction. The described yarn winding device. 3. A method of operating a yarn winding device, wherein a single variable speed main motor drives a winding spindle and an elastic yarn feeding roller is driven via a continuously variable transmission. During the winding operation, the output speed of the main motor is decelerated from the initial state due to the thickening of the yarn, the yarn speed during winding is maintained at the set value, and the main motor and the elastic yarn feeding roller are The elastic yarn feeding speed is maintained at the set value while increasing the gear ratio of the continuously variable transmission from the initial state, and during the return operation after winding, the continuously variable transmission moves to the elastic yarn feeding roller. A method for operating a yarn winding device, wherein the transmission ratio is returned to the initial state while driving the continuously variable transmission with the main motor in a state where the transmission of the driving force is cut off.