JPH0790732A - Double twist spindle - Google Patents

Abstract

PURPOSE:To provide a double twist spindle capable of remarkably facilitating the yarn tension adjustment operation and keeping the yarn tension constantly to an optimum level. CONSTITUTION:This double twist spindle is provided with a hysteresis clutch mechanism and a transmission torque adjustment mechanism. The hysteresis clutch mechanism introduces a stock yarn 17 through a horizontal hole 3 of a spindle disk 2 fixed to a hollow shaft 1 into the center hole 29 of the hollow shaft, draws the yarn through a yarn-introducing hole 65 of a pot, winds the drawn yarn on a bobbin 8 while guiding the yarn with a vertically traversing traverse guide 7 erected on the pot and transmits the rotational torque of the hollow shaft 1 to the bobbin 8 in non-contacting and automatically slipping state. The transmission torque adjustment mechanism drives a control motor 37 by a signal outputted according to the deviation of the yarn tension detected by a yarn tension detector from a preset tension level and automatically adjusts the gap between a magnet 12 and a magnetic plate 13 of the hysteresis clutch mechanism to adjust the transmission torque.

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 from the horizontal hole 3 provided in the spindle disk 2, forms a balloon 4, enters the top guide 5, and moves up and down along the traverse cam 6. It is wound around a bobbin 8 via a traverse guide 7 which reciprocates to the. 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 rotational displacement of the magnet changes the gap of the hysteresis clutch mechanism composed of the magnetic plate 13 and the magnet 12 that are rotationally driven, and the transmission torque from the magnet 12 to the magnetic plate 13 is variably adjusted. Pulley 1
The driving torque of the bobbin 8 driven via the belts 4 and 15 and the belt 16 is adjusted to keep the winding tension of the yarn 17 constant regardless of the change in the winding diameter of the yarn layer 9 of the bobbin 8. There is.

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 22 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
Are fixed to the bracket 22, 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 22, thereby vertically moving the male screw shaft 18 and the magnetic plate 13 which are screwed together 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. Then, the reference gap once adjusted is fixed by a screw or the like so that the female thread sleeve 20 does not rotate with respect to the bracket 22 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.

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.

Also, since it is necessary to drive the rotating parts other than the bobbin 8 such as the traverse cam 6 by the rotation of the bobbin 8,
If the torque required for rotation changes in these other rotating parts, this also causes fluctuations in the tension of the yarn 17. Further, when the rotary body in the new device is used or the impurities are attached to the rotary portion during use to increase the rotation resistance, the torque is reduced and the tension of the yarn 17 is reduced accordingly.
It is necessary to make adjustments each time and readjust the tension of the yarn 17 to the optimum condition.

Further, in the twisting spindle device, usually about 100 spindles are arranged in parallel and driven simultaneously,
When manufacturing the twisted yarn spindle device, the most important point in terms of quality is that in all the spindles arranged in parallel, the relationship between the gap between the magnetic plate 13 and the magnet 12 and the transmission torque is different for each spindle. It is an absolutely necessary condition that all of them have a uniform value, and it is extremely difficult to control the quality in manufacturing the twisted spindle device.

Therefore, according to the present invention, in the double-twisted-pile spindle, the initial thread tension adjustment work associated with the change in the type of thread to be twisted can be performed extremely easily, and further, the winding diameter of the bobbin during operation and other factors can be changed. An object of the present invention is to provide a double-twisted-yarn spindle that can always maintain an optimum yarn tension regardless of changes in conditions, and that is easy to manufacture a twisted-yarn spindle device.

[0011]

As a result of intensive studies conducted by the present inventors to achieve the above object, the conventional double-twisted yarn spindle is introduced from below the spindle, and the horizontal direction of the spindle disk 2 is introduced. First, the thread 17 coming out from the hole 3 was formed into the balloon 4 and wound on the bobbin 8 via the top guide 5 and the traverse guide 7 above the spindle. To guide the yarn into the spindle from the horizontal hole 3 of the spindle disk 2 and to reverse the yarn guiding direction to constantly detect the tension of the yarn to be introduced and to keep the yarn tension constant. By providing an adjusting mechanism that automatically adjusts the magnet gap of the hysteresis clutch mechanism consisting of 12 and the magnetic plate 13, it is possible to measure the yarn tension during the operation of the double twist yarn spindle. Device that can regulate very easily the optimum thread tension while measuring the thread tension by, found that can operate the double twisting spindle while always adjusted to an optimum yarn tension, and have completed the present invention.

That is, according to the present invention, a double-twisted yarn spindle that winds a raw yarn supplied from a feed roller at a constant speed around a winding bobbin that is rotationally driven to form a balloon around the winding bobbin while twisting the bobbin. In the above, the original yarn is guided through a yarn tension detecting device and a top guide to form a balloon, and then a central hole for inserting a yarn is provided and a lower part of a hollow shaft rotatably supported on the machine base and driven to rotate. The raw yarn is introduced into the central hole of the hollow shaft through the horizontal hole of the fixed spindle disk, rotatably mounted on the hollow shaft above the hollow shaft, and stopped rotating against the machine base. Pulled out from the yarn outlet hole of the pot held in the state, wound up on the bobbin while being traversed vertically by a traverse guide installed upright on the pot, and a magnet on the driving side rotating with the hollow shaft, or Hysteresis mechanism including a magnetic plate and a driven-side magnet or magnetic plate that is installed at a distance from the movable plate and transmits rotational torque while automatically slipping without contact, and the driven-side magnet or magnetic plate Of the control mechanism fixed to the machine base in the normal direction or the transmission mechanism for transmitting the rotation of the bobbin to the bobbin and the output signal output according to the deviation of the yarn tension detected by the yarn tension detecting device from the set value. A double-twisted yarn comprising a yarn tension adjusting device having a transmission torque adjusting mechanism that is driven in reverse and adjusts a gap between a magnet of the hysteresis clutch mechanism and a magnetic plate to adjust a transmission torque of the hysteresis clutch mechanism. Spindle is the gist.

[0013]

DETAILED 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 the upper half of the double twist spindle of the present invention, and FIG. 4 is a sectional view of the lower half of the double twist spindle.

3 and 4, a bearing box 25 inserted in a spindle housing 24 fixed to a machine base 23.
Thus, the hollow shaft 1 is rotatably supported. A spindle warp 26 is rotatably attached to the hollow shaft 1 at the lower end of the hollow shaft 1, and a cone clutch 27 above the spindle warp 26 is not rotatable with respect to the hollow shaft 1 and is hollow.
Is slidably mounted in the axial direction and the cone clutch 27 is attached to and detached from the spindle warp 26, so that the rotation of the spindle warp 26 rotationally driven by the running tape 28 is transmitted to the hollow shaft 1.

At the upper position of the bearing box 25, the spindle disk 2 is fitted on the hollow shaft 1 and rotates integrally with the hollow shaft 1. The hollow shaft 1 is attached to the spindle disk 2 from its periphery.
A horizontal hole 3 communicating with the center hole 29 inside is provided. A magnetic plate holder 30 is fitted on the upper side of the spindle disk 2, and a torque adjusting bush 31 is fitted on the lower side thereof so as to be rotatable with respect to the hollow shaft 1. A plurality of through holes 66 are formed in the spindle disk 2 perpendicularly to the surface of the spindle disk 2, and the upper magnetic plate holder 30 and the lower torque adjusting bush 31 of the spindle disk 2 are formed in the through hole 66 of the spindle disk 2. With the connecting bolt 67 loosely fitted to
The magnetic disk holders 30 and the torque adjusting bushes 31 on both sides of the spindle disk 2 sandwich the spindle disk 2 while keeping them at a constant distance. , Is movable up and down and rotates together with the spindle disk 2.

32 is a worm 33 rotated by a motor 37
A worm wheel that meshes with a female thread 34 formed on the inner periphery of the worm wheel engages with a male thread 35 for torque adjustment provided on the outer periphery of the spindle housing 24. The torque adjusting bush 31 is rotatably supported in the axial direction by a worm wheel 32 via a bearing 36, and the rotation of the worm 33 causes the torque adjusting bush 31 and the magnetic plate holder 30 to integrally move up and down, The vertical position of the magnetic plate 13 fixed to the upper surface of the magnetic plate holder 30 is adjusted.

A pot 40 is rotatably attached to the hollow shaft 1 via a ball bearing 39 provided on the hollow shaft 1 above the magnetic plate holder 30. And, the pot 40 has a magnet 41 attached to it and a magnet 4 attached to the machine base 23.
Due to the suction action of 2, the pot 40 does not rotate following the rotation of the hollow shaft 1 and maintains a stationary state. Also, instead of providing the magnets 41 and 42,
The center axis of the pot 40 may be inclined with respect to the vertical direction, and the eccentricity of the center of gravity of the pot 40 may prevent co-rotation of the pot 40 when the hollow shaft 1 rotates.

A magnet holder 44 is rotatably supported on the pot 40 via a bearing 38 on the outer side of the rotary shaft portion 43 of the pot 40, and faces the magnetic plate 13 on the lower surface of the magnet holder 44 with a space therebetween. The magnet 12
Is installed. The positions of the magnet 12 and the magnetic plate 13 are switched up and down, and the magnet 12 is placed on the magnetic plate holder 30 side.
The magnetic plate 13 may be arranged on the magnet holder 44 side. A gear 46 is provided on the outer periphery of the upper portion of the magnet holder 44, and meshes with a gear 48 fixed to the lower end of a transmission shaft 47 rotatably mounted on the pot 40. A bobbin holder 49 is provided on the rotary shaft portion 43 of the pot 40.
The gear 50, which is rotatably fitted to the bobbin holder 49 and is fixed to the lower part of the bobbin holder 49, meshes with the gear 51 fixed to the upper end of the transmission shaft 47, and the rotation of the magnet holder 44 is transferred to the bobbin holder 49 via the transmission shaft 47. Transmitted.

On the other hand, the bobbin holder 49 is rotated by the gear 52.
Is transmitted to the input shaft of the speed reducer 53 fixed to the pot 40, and the output of the speed reducer 53 is fixed to the output shaft of the gear 5
4 and the traverse cam 6 is transmitted to the traverse cam 6 via the gear 45 fixed to the shaft of the traverse cam 6, the traverse cam 6 rotates at a speed proportional to the rotation speed of the bobbin holder 49, and the traverse guide engaged with the traverse cam 6 7 reciprocates up and down along the traverse cam 6.

Reference numeral 55 denotes a yarn tension detecting device provided above the top guide 5, which has a structure as shown in FIG. 5 or 6, for example. In FIG. 5, the thread 17 is run around a tension roller 58 rotatably supported by a support arm 57 fixed to the pressure sensor 56 to run the thread 17, and an electric signal corresponding to the tension of the thread 17 is applied to the pressure sensor 5.
6 is output, and the motor 37 is rotated normally or reversely so that the output is within a certain range, and the tension of the yarn 17 is adjusted.

In the yarn tension detecting device 55 shown in FIG. 6, a tension roller 58 is rotatably attached to the other end of a tension bar 59 whose one end is swingably supported, and is wound around the tension roller 58 to run the yarn 17. A tension adjusting spring 60 for urging the tension bar 59 is provided so that the tension bar 59 is rotated in a direction opposite to the direction in which the tension bar 59 is rotated by the tension of the yarn 17, and the tension of the yarn 17 and the tension adjusting spring 60 are provided. Balance the torque due to the tension. A magnet or the like is fixed to the tip of an arm 61 that rotates integrally with the tension bar 59, and a pair of proximity switches 62 are arranged on both sides of the arm 61 so that one of the proximity switches 62 can be activated by a change in the tension of the thread 17. When activated, the motor 3 responds to the output signal
7 is rotated normally or reversely, and the tension of the yarn is automatically adjusted to the range in which both proximity switches 62 are not operated.

[0022]

In order to adjust the tension of the balloon yarn using the double twist yarn spindle of the embodiment of the present invention, first, the yarn 17 is adjusted at a constant speed.
The raw yarn supplied through the feed roller 68 for feeding the yarn passes through the yarn tension detecting device 55 and the top guide 5, forms the balloon 4 while being regulated by the balloon guide ring 63, and is fixed to the spindle disk 2 to rotate together. After passing through the hole 64, the horizontal hole 3 of the spindle disk 2 enters the center hole 29 of the hollow shaft 1, the thread discharge hole 65 of the pot 40 exits, and the traverse guide 6 reciprocating on the traverse cam 6 guides the bobbin. It is wound up while traversing up and down to 8.

When the yarn tension is larger than a predetermined tension range according to the output signal of the yarn tension detecting device 55 provided upstream of the top guide 5, the motor 37 causes the worm 33 to rotate normally (clockwise in FIG. 3). The worm wheel 32 rotates clockwise, and the internal thread 34 is screwed into the external thread 35 for torque adjustment.
The rotation of the worm wheel 32 lowers. The torque adjusting bush 31 and the magnetic plate holder 30 that are engaged by the worm wheel 32 and the bearing 36 are lowered to open the gap between the magnetic plate 13 and the magnet 12, and the torque transmitted by the hysteresis clutch mechanism is reduced, thereby rotating the bobbin 8. As a result of the torque becoming smaller and the thread tension of the balloon 4 decreasing,
The thread tension is adjusted to the proper tension range. When the thread tension is smaller than the predetermined tension range, the thread tension adjustment is performed by the opposite operation.

During the torque transmission by the hysteresis clutch mechanism, the rotation speed of the bobbin 8 is determined by the speed of the yarn 17 fed from the feed roller and the winding diameter on the bobbin 8, so that the magnet holder 44 has a corresponding rotation speed. The magnet holder 44 is driven to rotate with a constant torque while causing a slip with the magnetic plate holder 30 that rotates and rotates faster than that.

According to the double-twisted yarn spindle of the present invention, the yarn tension constantly introduced during the operation of the double-twisted yarn spindle is detected by the yarn tension detecting device 55, and when the yarn tension is out of the predetermined tension range, the yarn tension is immediately released. Feedback to the adjustment device,
By adjusting the transmission torque by adjusting the distance between the magnetic plate 13 and the magnet 12 of the hysteresis clutch mechanism, the double twist yarn spindle can always be operated within the predetermined yarn tension range.

[0026]

According to the double twisted yarn spindle of the present invention,
From the beginning to the end of winding of the bobbin 8, the spindle can always be operated with a constant thread tension, and a large number of spindles can all be operated with a constant thread tension.
The quality of the product is constant and high quality twisted yarn can be obtained.

When manufacturing a twisted yarn of a different type, when setting a new yarn tension level, it is only necessary to change the set value of the yarn tension detecting device 55, and it is extremely easy to set the yarn tension level. Further, since it is not necessary to provide a filler arm in the conventional double twisted yarn spindle, workability such as replacement of the bobbin 8 is improved.

The torque curve showing the relationship between the gap between the magnet 12 and the magnetic plate 13 and the transmitted torque may be different in each spindle, and when manufacturing a double twisted yarn spindle device in which a large number of spindles are arranged. In addition, since each spindle is not required to have the same high quality accuracy,
Its manufacture becomes easy.

When a large number of spindles are operated in parallel, even if the resistances of the rotating bodies differ from one spindle to another, the thread tension of each spindle is detected during operation and the spindles are operated while adjusting them. Unlike the device, there is no need for precise adjustment of each spindle, and daily maintenance is easy.

In the conventional double-twisted yarn spindle, the amount of adjustment varies between spindle weights due to the adherence of the oil agent on the raw yarn, and so on. It is necessary to repeat operation, stop, and adjustment, and the yarn twisted during this adjustment becomes a defective product and there is a large loss, but if the yarn tension adjusting device of the present invention is used, adjustment can be performed in an extremely short time while operating. The loss of yarn is almost eliminated.

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, the yarn tension does not fluctuate due to changes over time in the machine, and the physical properties of the produced yarn can be made uniform.

[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 cross-sectional view of the upper half of an example of a yarn tension adjusting device for a double twist yarn spindle according to the present invention.

FIG. 4 is a cross-sectional view of the lower half 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 an example of a yarn tension detecting device used in the double twist yarn spindle of the present invention.

FIG. 6 is a schematic view of another example of the yarn tension detecting device used for the double twist yarn spindle of the present invention.

[Explanation of symbols]

 1 Hollow Shaft 2 Spindle 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 Threaded Shaft 19 Pot 20 Female thread sleeve 21 Bearing 22 Bracket 23 Machine stand 24 Spindle housing 25 Bearing box 26 Spindle warp 27 Cone clutch 28 Tape 29 Center hole 30 Magnetic plate holder 31 Torque adjustment bush 32 Worm wheel 33 Worm 34 Female thread 35 Male thread 36, 38 for torque adjustment , Bearing 37 motor 39 ball bearing 40 pot 41, 42 magnet 43 rotating shaft part 44 magnet holder 45, 46, 48, 50, 51, 52, 54 gear 47 transmission shaft 49 Bobbin holder 53 Speed reducer 55 Thread tension detector 56 Pressure sensor 57 Support arm 58 Tension roller 59 Tension bar 60 Tension adjusting spring 61 Arm 62 Proximity switch 63 Balloon guide ring 64 Guide hole 65 Thread lead-out hole 66 Through hole 67 Connecting bolt 68 Feed roller

Claims (3)

[Claims] 1. A double-twisted-yarn spindle in which a raw yarn supplied from a feed roller at a constant speed is wound around a winding bobbin that is rotationally driven to form a balloon around the winding bobbin while twisting the same. After forming the balloon by guiding the raw yarn through the yarn tension detecting device and the top guide, a spindle fixed on the lower part of the hollow shaft that has a central hole for thread insertion and is rotatably supported on the machine base and is driven to rotate. The raw yarn is introduced into the center hole of the hollow shaft through the horizontal hole of the disk, and the hollow shaft is rotatably mounted on the upper part of the hollow shaft and kept in a rotation stopped state with respect to the machine base. And a magnet or magnetic plate on the driving side that rotates with the hollow shaft while being wound around the bobbin while being drawn up from the yarn outlet of the pot and traversed vertically by a traverse guide installed on the pot. When A hysteresis clutch mechanism comprising a driven side magnet or the magnetic plate which is transmitted automatically slip while torque interval in spaced been paired set free contact,
The transmission mechanism that transmits the rotation of the driven magnet or magnetic plate to the bobbin and the output signal that is output according to the deviation of the thread tension detected by the thread tension detection device from the set value are fixed to the machine base. And a transmission torque adjusting mechanism that adjusts the transmission torque of the hysteresis clutch mechanism by adjusting the distance between the magnet and the magnetic plate of the hysteresis clutch mechanism by driving the control motor forward or reversely. A double twisted yarn spindle characterized in that 2. The yarn tension detecting device is a yarn tension detecting device comprising a tension roller for wrapping around and guiding a raw yarn and a pressure sensor having an arm fixed to rotatably supporting the tension roller. Double twisted yarn spindle according to claim 1. 3. A tension roller for wrapping and guiding a raw yarn, a tension bar rotatably attached to the tip end of the tension roller and swingably supported at the other end thereof, A tension adjusting spring for rotating and urging the tension bar in a direction opposite to the turning force acting on the tension bar by the tension of the original yarn, the tension of the original yarn applied to the tension bar, and the turning force by the tension adjusting spring. When the equilibrium position of the tension bar due to
The double twisted yarn spindle according to claim 1, which is a yarn tension detecting device having a proximity switch for outputting a signal.