JP2543811B2 - Double twisted spindle with yarn tension adjusting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double twisted yarn spindle capable of winding a bobbin with a substantially constant tension from the beginning to the end of winding.

[0002]

2. Description of the Related Art A conventional double-twisted yarn spindle is disclosed in, for example, Japanese Patent Publication No. 61-6173 of the present applicant,
As shown in FIG. 1, the thread, which has passed through the hollow shaft 1 of the spindle and exited from the horizontal hole 3 provided in the disk 2, forms a balloon 4, enters the top guide 5, and moves up and down along the traverse cam 6. The bobbin 8 is wound up via the traverse guide 7 that reciprocates. At this time, if the driving torque of the bobbin 8 is constant, the tension of the yarn greatly changes at the beginning and end of winding of the bobbin 8. Therefore, the filler arm 10 is biased and rotated in a direction in which the filler roller 11 at the tip of the filler arm 10 is always in contact with the yarn layer 9 of the bobbin 8 to respond to the change in the winding diameter of the yarn layer 9 of the bobbin 8.
The magnetic plate 13 and the magnet 1 which are rotationally driven by the rotational displacement of the
By changing the gap between the two, the transmission torque from the magnet 12 to the magnetic plate 13 is variably adjusted, and the drive torque of the bobbin 8 driven from the magnet 12 via the magnetic plate 13, the pulleys 14, 15 and the belt 16 is adjusted. However, the winding tension of the yarn 17 is kept constant regardless of the change in the winding diameter of the yarn layer 9 of the bobbin 8.

When the type of twisted yarn is changed, the material and count of the yarn are changed, and the number of rotations of the spindle is changed, the same winding tension results in the relationship between the centrifugal force and the mass of the balloon yarn. 4 does not rotate in a stable state,
The balloon 4 may collapse, damage the yarn, or cause yarn breakage.

For this reason, when changing the type of yarn to be twisted, it is necessary to adjust the yarn tension so as to obtain the optimum winding tension according to the type of yarn, and various thread tension adjusting mechanisms have been conventionally used. It is used.

For example, in the double twisted yarn spindle shown in FIG. 1, as shown in FIG. 2, a male screw shaft 18 screwed to a female screw sleeve 20 supported by a bracket 23 fixed to a pot 19 is mounted on a male screw shaft 18 via a bearing 21. A magnetic plate 13 and a bobbin driving pulley 14 fixed to the magnetic plate 13 are rotatably attached, and a base end of the filler arm 10 is fixed to the top of the male screw shaft 18. And the female thread sleeve 20 is always
Is fixed to the bracket 23, and the rotation of the filler arm 10 causes the male screw shaft 18 to rotate with respect to the female screw sleeve 20 with which the male screw shaft 18 is screwed.
The magnetic plate 13 supported thereby moves up and down to adjust the gap between the magnetic plate 13 and the magnet 12. When changing the type of thread, the female screw sleeve 20 is manually rotated with respect to the bracket 23 to vertically move the male screw shaft 18 and the magnetic plate 13 which are screwed with the female screw sleeve 20 so that the filler arm 10 has a constant reference angle. The reference gap between the magnetic plate 13 and the magnet 12 in the position is adjusted. The once-adjusted reference gap is fixed by a screw or the like so that the internal thread sleeve 20 does not rotate with respect to the bracket 23 so that it does not naturally change unless the type of thread changes.

[0006]

In the conventional double-twisted yarn spindle described above, the method for adjusting the yarn tension when the type of the original yarn to be twisted is changed is to temporarily stop the operation of the double-twisted yarn spindle and manually It is necessary to do in
At the inlet of the hollow shaft 1 at the bottom of the spindle, the running thread 17 is passed through a tensiometer to measure whether the thread tension has reached the desired optimum value. The operation needs to be repeated. Even if a skilled person performs this initial thread tension adjustment, it takes half a day to one day to adjust one double-twisted-yarn spindle, and the work efficiency is extremely low. Since they are operated side by side at the same time, the work of adjusting the yarn tension accompanying the change in the type of yarn to be twisted requires extremely manpower and is not easy.

Further, in the conventional double-twisted yarn spindle, even if the winding diameter of the yarn layer 9 of the bobbin 8 changes during operation, the magnetic displacement of the magnetic plate 13 is caused by the rotational displacement of the filler arm 10 in order to wind the yarn with a constant yarn tension. The gap between the magnet 12 and the magnet 12 is automatically adjusted. However, in this method, the change in the winding diameter is corrected so that the change in the gap between the magnets is constant regardless of the type of yarn. I am just making corrections. The relationship between the width of the gap and the transmitted torque is not linear, the magnetic attraction force is inversely proportional to the square of the distance, and the reference gap changes when the value of the reference tension changes. With the method of correcting the gap by rotation, it is impossible to always maintain the optimum thread tension from the beginning to the end of winding of the bobbin 8, and it is only possible to adjust the thread tension to a value close to a substantially optimum value on average. Absent. Ideally, it is desirable to maintain a constant thread tension regardless of the winding diameter of the bobbin 8.

Therefore, according to the present invention, in the double-twisted yarn spindle, the initial yarn tension adjustment work associated with the change in the type of yarn to be twisted can be carried out very easily, and further during operation, at all times,
An object of the present invention is to provide a double twist yarn spindle equipped with a balloon tension adjusting device capable of adjusting the yarn tension to an optimum value.

Another object of the present invention is to provide a double-twisted yarn spindle which can always maintain a constant yarn tension during the operation of the double-twisted yarn spindle regardless of the change in the winding diameter of the bobbin. .

[0010]

As a result of intensive studies by the present inventors in order to achieve the above object, in a yarn tension adjusting mechanism of a conventional double twist yarn spindle, an electric drive mechanism for a magnet gap of a hysteresis coupling is used. And by providing a radio remote control mechanism for controlling the drive mechanism such as radio waves,
During operation of the double-twisted-yarn spindle, it is possible to adjust the optimum thread tension very easily while measuring the thread tension with the thread tension measuring device. Furthermore, the thread tension adjusting signal is automatically sent according to the measurement result of the thread tension measuring device. The present invention has been completed by finding that it is possible to operate the double twisted yarn spindle while constantly adjusting to the optimum yarn tension by automatically driving the electric adjustment mechanism of the magnet gap by emitting it as a radio signal and receiving the signal. Came to.

That is, according to the present invention, a raw yarn which is provided at a constant speed from a feed roller is provided in a central hole of a hollow shaft which is provided with a central hole for thread insertion and which rotates integrally with a lower disk through a belt and a pulley. A double-twisted yarn spindle that introduces a yarn between the horizontal hole of the disc and the top guide that guides the yarn to the winding bobbin and twists it while twisting it while traversing the bobbin up and down by the traverse mechanism. A magnet on the driving side which is rotated by transmitting the rotation of the hollow shaft and a magnet on the driven side which is opposed to the magnet plate at a distance from the hollow shaft and transmits the rotational torque while automatically slipping without contact. Alternatively, a hysteresis clutch mechanism composed of a magnetic plate, a transmission mechanism for transmitting the rotation of the driven magnet or the magnetic plate to the bobbin, and a yarn tension of the introduced raw yarn measured at the inlet side of the hollow shaft. A transmitter for transmitting a control signal for manually instructing an increase or decrease of the yarn tension as a radio control signal of radio waves or light; and a drive controller for receiving the control signal and outputting a drive current of the control electric motor, A transmission torque adjusting mechanism that is driven by the electric motor to adjust the distance between the magnet and the magnetic plate of the hysteresis clutch mechanism to adjust the transmission torque of the hysteresis clutch; and a filler roller mounted at the tip on the thread layer wound on the bobbin. Adjusting the gap between the magnet and the magnetic plate of the hysteresis clutch mechanism by rotating the filler arm that is urged to come into contact with the bobbin to prevent fluctuations in the thread tension due to changes in the winding diameter of the thread layer of the bobbin. A double-twisted-yarn spindle equipped with a yarn tension adjusting device is provided.

According to still another aspect of the present invention, a raw roller is provided at a constant speed from a feed roller to a central hole of a hollow shaft which is provided with a central hole for thread insertion and which rotates integrally with a lower disk via a belt and a pulley. A yarn is introduced, and a balloon is formed between the horizontal hole of the disc and the top guide that guides the yarn to the winding bobbin, and while twisting, the double traverse mechanism winds the yarn around the bobbin while traversing vertically. In the twisted yarn spindle, the driven side, which is opposed to the magnet or magnetic plate on the driving side that is rotated by transmitting the rotation of the hollow shaft and is spaced from the magnet or magnetic plate, is automatically slipped without contact and the rotational torque is transmitted. The hysteresis clutch mechanism consisting of the magnet or magnetic plate, the transmission mechanism for transmitting the rotation of the driven magnet or magnetic plate to the bobbin, and the yarn tension of the raw yarn introduced at the inlet side of the hollow shaft. A thread tension measuring device that determines the thread tension, a control transmitter that automatically transmits a control signal to increase or decrease the thread tension in accordance with the measured thread tension as a radio or optical wireless control signal, and receives the control signal. A drive control device that outputs a drive current of a control electric motor, and a transmission torque adjustment mechanism that is driven by the electric motor to adjust a gap between a magnet and a magnetic plate of the hysteresis clutch mechanism to adjust a transmission torque of the hysteresis clutch. A double-twisted-yarn spindle having a yarn tension adjusting device is provided.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a double twisted yarn spindle equipped with a yarn tension adjusting device of the present invention will be described in detail with reference to the drawings. FIG. 3 is a sectional view of an essential part of a yarn tension adjusting device for a double twist yarn spindle according to the present invention.

The double twisted yarn spindle equipped with the yarn tension adjusting device of the present invention has the hollow shaft 1 through which the yarn 17 supplied from the feed roller 22 is inserted, as in the conventional double twisted yarn spindle shown in FIG. It is rotatably attached to the machine base 25 via 24, and the pulley 26 and the disk 2 are mounted on the hollow shaft 1.
Are fixed and rotate integrally with the hollow shaft 1. Further hollow shaft 1
A pot 19 is rotatably attached to the hollow shaft 1 via a ball bearing 28 provided above. And pot 1
The magnet 9 attached to the magnet 9 and the magnet 30 attached to the machine base 25 are attracted to each other to prevent the pot 1 from rotating even when the hollow shaft 1 rotates.
The 9 does not rotate following this, and is kept stationary. Further, instead of providing the magnets 29 and 30, the central axis of the pot 19 is inclined with respect to the vertical direction, and the eccentricity of the center of gravity of the pot 19 prevents corotation of the pot 19 when the hollow shaft 1 rotates. May be.

A bush 3 having a gear 32 and a magnetic plate 13 fixed to a shaft 31 fixed to the pot 19 as shown in FIG.
3 is integrally rotatably mounted, and the gear 32 meshes with a gear (not shown) fixed to the upper end of the hollow shaft 1 to transmit power.

The lower end of the male screw shaft 18 is loosely fitted in the central hole 34 of the shaft 31. Rotate freely in the pot 19
6 is mounted so as to mesh with the worm gear 37, and the female screw portion 38 at the center of the worm wheel 36 is attached to the male screw shaft 18
The male screw shaft 18 is screw-engaged with the male screw shaft 35, and the worm wheel 36 is rotated to support the male screw shaft 18 so that its vertical position can be adjusted.

A bush 40, which is integral with the bobbin drive gear 39 and has the magnet 12 fixed to the lower surface, is rotatably attached to the male screw shaft 18 via a ball bearing 41, and the magnetic plate 13 and the gap 4 are provided.
They are arranged so as to face each other with a gap of 2. The positions of the magnet 12 and the magnetic plate 13 may be interchanged as shown in FIG. The filler arm 10 is fixed to the upper end of the male screw shaft 18, and the filler arm 11 is rotatably attached to the tip of the filler arm 10 so that the filler roller 11 is always in contact with the surface of the thread layer 9 on the bobbin 8. It is rotationally biased by a spring (not shown) or the like engaged with the lower end.

The worm gear 37 is fixed to the shaft of the electric motor 43. As shown in FIG. 4, the electric motor 43 includes a battery 44 mounted on the pot 19 and a drive controller 45.
Rotation is freely controlled so as to perform forward rotation or reverse rotation by a drive current output from the. The drive control device 45 receives a control signal such as an electric wave or an infrared ray emitted from the transmitter 48, and supplies drive power for the electric motor 43 accordingly.

FIG. 5 shows another embodiment of the yarn tension adjusting device of the present invention. In this embodiment, the output signal of the yarn tension detector 46 provided at the inlet of the hollow shaft 1 is guided to the control device 47,
Compared with a preset value of the target thread tension, the control transmitter 47 emits a wireless remote control signal by radio waves or light such as infrared rays according to the size of the thread tension, and the drive controller 4
The signal is received by the receiver 5 and the electric motor 43 is normally or reversely rotated as described above.

Most of the weight of the bush 40, the magnet 12, the ball bearing 41 and the filler arm 10 is the thrust bearing 27.
The worm wheel 36 is supported by the compression coil spring 49 via the shaft so that an excessive load is not applied.

[0021]

In order to adjust the tension of the balloon yarn of the double twisting spindle by the double twisting spindle equipped with the yarn tension adjusting device of the present invention, in the case of the embodiment shown in FIG. Operate the twisting spindle. That is, the raw yarn supplied at a constant traveling speed through the feed roller 22 is guided through the central hole of the hollow shaft 1 and the horizontal hole 3 of the rotationally driven disk 2 to form a balloon 4 which rotates at high speed.
It is guided by a traverse guide 7 which reciprocates up and down on a traverse cam 6 through a top guide 5, and is wound on a bobbin 8 while traversing up and down.

A yarn tension measuring device provided at the entrance of the hollow shaft 1 measures the yarn tension during running and compares the target yarn tension with a control signal for manually increasing or decreasing the yarn tension. Is emitted from the transmitter 48 as a radio signal of radio waves or light. When the drive control device 45 receives this control signal, it outputs a drive current for rotating the electric motor 43 in the normal or reverse direction in response to the signal. This drive current drives the electric motor 43 to drive the worm gear 37.
Also, the worm wheel 36 meshing with this is rotated, and the male screw shaft 18 screwed into the female screw portion 38 inside thereof is moved up and down. Then, the bush 40 and the magnet 12 rotatably attached to the male screw shaft 18 move up and down, and the gap 42 with the magnetic plate 13 below expands and contracts. When the gap 42 increases or decreases, the drive torque of the upper magnet 12 that rotates while sliding due to the rotation of the lower magnetic plate 13 increases or decreases, and the thread tension of the balloon 4 when the filler arm 10 is at the reference position increases or decreases. While operating the double-twisted yarn spindle, it is possible to adjust very easily until the yarn tension measured by the yarn tension measuring device reaches a predetermined value.

During operation of the double twist yarn spindle, the pot 19
As the number of yarn layers 9 wound on the yarn layer increases, the filler arm 10 is rotationally displaced via the filler roller 11 that contacts the surface of the yarn layer 9, and the male screw shaft 18 fixed to the filler arm 10 rotates. , And is guided by the female screw portion 38 of the worm wheel 36 and the central hole 34 to descend. Ball bearing 4 at this time
The magnet 12 mounted on the male screw shaft 18 also descends via the connector 1, and the gap 42 with the magnetic plate 13 is narrowed. Therefore, as the winding diameter of the yarn layer 9 of the bobbin 8 increases, the rotation torque of the bobbin 8 required to keep the yarn tension constant increases, but the filler arm 10 rotates in accordance with the increase of the winding diameter.
Along with this, the gap 42 between the magnet 12 and the magnetic plate 13 is reduced, so that the transmission torque is increased, whereby the rotational torque of the bobbin 8 is increased and the thread tension of the balloon 4 can be kept substantially constant.

In the case of the embodiment shown in FIG. 5, the double twisted yarn spindle is operated so that the yarn tension automatically set close to the output of the yarn tension detector 46 provided at the inlet of the hollow shaft 1. Then, a control signal of radio wave or light is transmitted from the control transmission device 47. For example, a maximum value and a minimum value that are allowable limits of the thread tension are set, and when the thread tension detected by the thread tension detector 46 exceeds the allowable range, the electric motor 43 is rotated normally or reversely. Send a control signal. The drive control device 45 receives the control signal, and the electric motor 4
The drive current of No. 3 is output, the worm gear 37 is rotated, and the thread tension of the balloon 4 is automatically adjusted to a predetermined value as described above.

In the yarn tension adjusting device for the double twisted yarn spindle of the present invention, the power source for controlling the transmission torque of the hysteresis coupling, the drive control device, the electric motor, etc. are all mounted on the pot 19, and the surrounding area is a balloon. 4 is designed to rotate, and a control signal for controlling the drive control device is input as a radio signal such as radio waves or light, so that the transmitter 4 outside the balloon can be transmitted to the drive control device 45 inside the balloon.
A control signal can be wirelessly transmitted from 8 and can be operated apart from each other by a balloon, and it is not necessary to transmit the control signal by a conductor through a shaft portion of a complicated rotating body, which simplifies the structure of the device.

The double-twisted yarn spindle equipped with the yarn-tension adjusting device of the present invention may be provided with a yarn-tension detector 46, a control transmission device 47, a transmitter 48, etc., which are dedicated to the respective double-twisted yarn spindles. It may be commonly used for a large number of double twist yarn spindles, and the yarn tension of each double twist yarn spindle may be adjusted sequentially when the type of yarn is changed.

When each double-twisted yarn spindle is equipped with the automatic yarn tension adjusting device shown in FIG. 5, the yarn tension is constantly monitored during operation of the double-twisted yarn spindle, and the yarn tension is always adjusted to the optimum one. be able to. In this case, bobbin 8
Since the automatic yarn tension adjusting device can automatically adjust the yarn tension so as to eliminate the change in the yarn tension due to the change in the winding diameter of the wound yarn layer 9, it is not necessary to provide the adjusting device with the filler arm 10.

[0028]

According to the double twisted yarn spindle equipped with the yarn tension adjusting device of the present invention, when the kind of the original yarn to be twisted is changed, the yarn tension can be adjusted to the optimum yarn tension very easily. The efficiency of the tension adjustment work is significantly improved, the time required for adjusting the spindle is reduced, and the productivity of the twisting process is improved.

Further, the amount of adjustment varies between spindle weights due to the state of the oil agent adhered to the raw yarn, etc., so it is necessary to repeat operation, stop, and adjustment several times in order to adjust the proper tension for each spindle. However, the yarn twisted during this adjustment is a defective product and a large loss occurs.However, if the yarn tension adjusting device of the present invention is used, adjustment can be performed in an extremely short time while operating, and the yarn loss is reduced. It almost disappears.

For the above-mentioned reason, since the spindle has a difference in the adjustment amount between the weights, the conventional thread tension adjustment requires an expert, but the device of the present invention requires an expert. Instead, anyone can easily make adjustments.

When the new twisting spindle is continuously operated for 2 to 3 months, the thread tension usually tends to increase due to the fitting of the bearing portion inside the spindle, etc. However, in the conventional twisting spindle, the thread tension is adjusted. Since a great deal of labor is required, even if the yarn tension changes to some extent, if the physical properties of the twisted yarn to be produced are within the specifications, the operation is often continued as it is. With the double-twisted yarn spindle of the present invention, fine adjustment of the yarn tension can be easily performed periodically without stopping the operation of the device, so that the yarn tension can be easily controlled and the physical properties of the produced yarn can be made uniform. Can be realized.

By installing the automatic yarn tension adjusting device of the present invention and operating the double-twisted yarn spindle, it is possible to always perform the twisting with the optimum yarn tension during the operation.

[Brief description of drawings]

FIG. 1 is a front sectional view of a conventional double twist spindle.

FIG. 2 is a sectional view of a yarn tension adjusting mechanism of a conventional double twist yarn spindle.

FIG. 3 is a sectional view of an essential part of an example of a yarn tension adjusting device for a double twist yarn spindle according to the present invention.

FIG. 4 is a schematic view of a controller of an example of a yarn tension adjusting device for a double twist yarn spindle according to the present invention.

FIG. 5 is a schematic view of a controller of another example of the yarn tension adjusting device for the double twist yarn spindle of the present invention.

[Explanation of symbols]

 1 Hollow Shaft 2 Disc 3 Horizontal Hole 4 Balloon 5 Top Guide 6 Traverse Cam 7 Traverse Guide 8 Bobbin 9 Thread Layer 10 Filler Arm 11 Filler Roller 12 Magnet 13 Magnetic Plate 14, 15 Pulley 16 Belt 17 Thread 18 Male Thread Shaft 19 Pot 20 Female Thread Sleeve 21 Bearing 22 Feed roller 23 Bracket 24 Bearing box 25 Machine stand 26 Pulley 27 Thrust bearing 28 Ball bearing 29, 30 Magnet 31 Shaft 32 Gear 33 Bush 34 Center hole 35 Male screw part 36 Worm wheel 37 Worm gear 38 Female screw part 39 Bobbin drive gear 40 Bushing 41 Ball Bearing 42 Gap 43 Electric Motor 44 Battery 45 Drive Controller 46 Thread Tension Detector 47 Control Transmitter 48 Transmitter 49 Compression Coil Spring

Claims (3)

(57) [Claims] 1. A raw yarn supplied at a constant speed from a feed roller is introduced into a central hole of a hollow shaft which is provided with a central hole for thread insertion and which rotates integrally with a lower disk through a belt and a pulley, In a double-twisted yarn spindle that winds a yarn around a bobbin while traversing up and down by a traverse mechanism while forming a balloon between a horizontal hole of a disc and a top guide that guides the yarn to a winding bobbin and twisting the balloon, A magnet or magnetic plate on the driving side, which is rotated by transmitting the rotation of the hollow shaft, and a magnet or magnetic plate on the driven side, which is opposed to the magnet or magnetic plate on the driven side with a gap therebetween and which transmits rotational torque while automatically slipping without contact. A hysteresis clutch mechanism, a transmission mechanism that transmits the rotation of the driven-side magnet or magnetic plate to the bobbin, and a thread manually operated according to the thread tension of the introduced raw thread measured at the inlet side of the hollow shaft. A transmitter for transmitting a control signal for instructing an increase / decrease in force as a radio control signal of radio waves or light, a drive control device for receiving the control signal and outputting a drive current of a control electric motor, and a drive by the electric motor And a transmission torque adjusting mechanism that adjusts the transmission torque of the hysteresis clutch by adjusting the distance between the magnet and the magnetic plate of the hysteresis clutch mechanism, and a filler roller attached at the tip so that the yarn roller wound around the bobbin is brought into contact. A yarn tension adjusting mechanism for adjusting the distance between the magnet and the magnetic plate of the hysteresis clutch mechanism by rotating the biased filler arm to prevent the yarn tension from varying due to a change in the winding diameter of the yarn layer of the bobbin. A double twist yarn spindle equipped with a yarn tension adjusting device. 2. A raw thread supplied from a feed roller at a constant speed is introduced into a central hole of a hollow shaft provided with a central hole for thread insertion and rotating integrally with a lower disk through a belt and a pulley, In a double-twisted yarn spindle that winds a yarn around a bobbin while traversing up and down by a traverse mechanism while forming a balloon between a horizontal hole of a disc and a top guide that guides the yarn to a winding bobbin and twisting the balloon, A magnet or magnetic plate on the driving side, which is rotated by transmitting the rotation of the hollow shaft, and a magnet or magnetic plate on the driven side, which is opposed to the magnet or magnetic plate on the driven side with a gap therebetween and which transmits rotational torque while automatically slipping without contact. A hysteresis clutch mechanism, a transmission mechanism for transmitting the rotation of the driven magnet or magnetic plate to the bobbin, and a yarn tension measurement for measuring the yarn tension of the raw yarn introduced at the inlet side of the hollow shaft. Device, a control transmission device that automatically transmits a control signal for instructing increase or decrease of the thread tension according to the measured thread tension as a radio control signal of radio waves or light, and an electric motor for control that receives the control signal. A drive control device that outputs a drive current of the above, and a transmission torque adjustment mechanism that is driven by the electric motor to adjust the distance between the magnet and the magnetic plate of the hysteresis clutch mechanism to adjust the transmission torque of the hysteresis clutch. Double twisted yarn spindle equipped with a characteristic yarn tension adjusting device. 3. A gap between a magnet and a magnetic plate of the hysteresis clutch mechanism is adjusted by rotating a filler arm that is urged to bring a filler roller mounted at the tip into contact with a yarn layer wound around the bobbin. The double-twisted yarn spindle equipped with the yarn tension adjusting device according to claim 2, further comprising a yarn tension adjusting mechanism for preventing a change in the yarn tension due to a change in the winding diameter of the yarn layer of the bobbin.